1131e90o acronyms 6 terms

Technical Manual

iDEN™

Guide to Motorola Acronyms and Terms

68P81131E90-O

SYSTEM-LEVEL INFORMATION

Notice to Users

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While reasonable efforts have been made to assure the accuracy of this document, this document may contain technical or typographical errors or omissions. Motorola, Inc. and its subsidiaries and affiliates disclaim responsibility for any labor, materials, or costs incurred by any person or party as a result of using this document. Motorola, Inc., any of its subsidiaries or affiliates shall not be liable for any damages (including, but not limited to, consequential, indirect, incidental, or special damages or loss of profits or data) even if they were foreseeable and Motorola has been informed of their potential occurrence, arising out of or in connection with this document or its use. Motorola, Inc. reserves the right to make changes without notice to any products or services described herein and reserves the right to make changes from time to time in content of this document and substitute the new document therefore, with no obligation to notify any person or party of such changes or substitutions.

© 2002 - Motorola, Inc. All Rights Reserved REV062802

Contact Information Motorola, Inc. Global Telecom Solutions Sector 21440 W. Lake Cook Rd. Deer Park, IL 60010 U.S.A

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

TABLE OF CONTENTS

OVERVIEW ................................................................................................................................ 1 SCOPE.......................................................................................................................................................1 VERSION INFORMATION...........................................................................................................................1 MANUALS ON-LINE..................................................................................................................................1 REPORTING MANUAL ERRORS.................................................................................................................2 GENERAL SAFETY....................................................................................................................................2

GUIDE TO MOTOROLA ACRONYMS AND TERMS ........................................................ 3

Guide to Motorola Acronyms and Terms 68P81131E90-O i June 28, 2002

TABLE OF CONTENTS

Notes

ii 68P81131E90-O Guide to Motorola Acronyms and Terms June 28, 2002

OVERVIEW

Scope This Glossary of Terms and Acronyms contains an alphabetic listing of many of the definitions of the technical terms, abbreviations, and acronyms used to describe a Motorola iDEN® wireless communications system. Many of the entries in this glossary relate, in a general sense, to the topic of telecommunications as applied to Motorola products and services.

The information found in this glossary has been gathered from several technical and OEM resources and is believed to be reliable. Motorola is not responsible for any errors or omissions that may have occurred during the production of this information.

The manual will be updated periodically to keep current with the changing technology and network elements that have been introduced to the iDEN System.

The OEM contributions to this resource include, but are not limited to, the following:

Cisco Systems HP-Compaq Nortel Sun Microsystems

Version Information The following table lists the manual version, date of version, and remarks on the version.

Issue Date of Issue Remarks 1.0 June 28, 2002 Initial Publication

Manuals On-line

This manual is available on GTSSonline.Motorola.com, the iDEN customer site. This site was created to provide secure access to critical iDEN Infrastructure and Customer information. This web site features the following categories of information:

• Quick reference to the iDEN acronyms and terms.

• Product training information including; course descriptions, prerequisites, training planning tools, schedules, pricing and registration information.

• A library of iDEN Infrastructure and Customer technical documentation such as bulletins, system release documents and product manuals.

The documents are located on the secured extranet website at the URL:

http://gtssonline.motorola.com

For information on obtaining an account on this site, click on the Enroll option located at the bottom of the window.

Guide to Motorola Acronyms and Terms 68P81131E90-O 1 June 28, 2002

Reporting Manual Errors

If you locate an error or identify a deficiency in this manual, please take the time to contact us at the following email address:

[email protected]

Be sure to include your name, fax or phone number, the complete manual title and part number, the page number where the error is located, and any comments you may have regarding what you have found.

Thank you for your time. We appreciate any comments from the users of our manuals.

General Safety You must heed the safety precautions and warnings listed in the product manuals for your equipment. Any individual using or maintaining the product(s), should follow these warnings and all other safety precautions necessary for the safe operation of the equipment in your operating environment. Motorola, Inc. assumes no liability for failure to comply with these requirements.

2 68P81131E90-O Guide to Motorola Acronyms and Terms June 28, 2002

Guide To Motorola Acronyms and Terms

# 1+ (One Plus) A direct dialed telephone call in which the originator dials 1 plus the destination number; also called Direct Distance Dialing (DDD).

100BaseT IEEE standard from proposals by the Fast Ethernet Alliance (including 3Com and SynOptics). It will support Category 3,4 & 5 UTP cabling.

100BaseVG AnyLan A competing proposal to 100BaseT (promoted by Hewlett Packard, IBM and Proteon among others) to the IEEE for a 100 Mbit/s standard over voice grade UTP the cable most users already have installed in existing 10BaseT systems. Based on Quartet Signaling and demand priority protocol, it preserves the infrastructure and will need only a new hub and upgraded adapters in PCs/work stations. It claims support for Category 3,4 & 5 UTP cabling for both Ethernet and Token Ring.

10Base2 A form of Ethernet and IEEE 802.3 network cabling using thin coaxial. It refers to 10 Mbit/s speed Baseband transmission over 200 meters maximum length in practice 185m) and is commonly known as Cheapernet. This is the type of Ethernet used within an iDEN EBTS.

10Base5 A form of Ethernet and IEEE 802.3 network cabling using thick coax. It refers to 10Mbit/s speed Baseband transmission and 500m maximum length.

10BaseT A form of Ethernet and IEEE 802.3 network cabling using twisted pair cabling. It refers to 10Mbit/s speed Baseband transmission

twisted pair cable with a maximum segment length of 100m.

10XXX Refers to the process of dialing the Carrier Identification Code (CIC) that is assigned to an Interexchange Carrier (IEC) specified in the third through fifth digits. By this means an equal access subscriber can access an IEC other than its preselected IEC on a call by call basis. Also allows an equal access subscriber to access an IEC rather than the Local Exchange Carrier for an intraLATA call.

1pps Abbreviation for 1 part per second. NOTE: This may mean 1 pulse per second depending on context within document.

3wc 3 Way Calling

800 MHz Defined as the frequency range traditionally used for SMR dispatch and cellular communication.

900 MHz Defined as the frequency range which represents the additional frequencies allocated for SMRs to ease the continued demand for channels.

A A Amperes

A Interface Switch The communications interface that links the BSS and MSC; provides the functions necessary to establish, maintain, and terminate circuit-switched connections in a PLMN. Uses Q.931 like signaling over CCS7 SCCP and MTP.

A/D Analog to Digital (converter)

AAL ATM Adaptation Layer


ABR Available Bit Rate

AC Symbol for Alternating Current

Access Channel A reverse CDMA Channel used by a mobile station to communicate to a base station when not assigned to a traffic channel. The Access Channel is used for short signaling message such as call originations, responses to pages, and registrations.

Access Controller Gateway Site Controller and communications gateway between the EBTS site and the Switching Center. The iDEN site controller and the communications gateway between an EBTS site and the iDEN systems control network. The ACG is the site controller as well as the communications gateway between the EBTS site and the switching center. Two platforms: VME & iSCSee ACG.

Access Probe One Access Channel transmission consisting of a preamble and a message. The transmission is an integer number of frames in length and carries one Access Channel message.

ACCH See Associated Control Channel.

ACD Automatic Call Distribution

ACD Architecture Context Diagram

ACDNR ACD (Agent) Not Ready

ACG See Access Controller Gateway.

ACIPR Adjacent Channel Interface Protection Ratio

ACK Acknowledgment

ACP Associated Control Procedure

ACR Adjacent Channel Rejection

ACT active

Active Set The set of pilots associated with the CDMA Channels containing Forward Traffic Channels assigned to a particular mobile station.

ACTS Advanced Communications Technology Satellite

ACV Application Contact Version

AD Assembly Drawing

ADA See Average Delay to Abandon.

ADA American Disabilities Act

ADC See Administrative Data Center.

Address A name which describes location attributes. All addresses are names, but all names are not addresses.

Administrative Data Center An interface to the Dispatch Application Processor; used for loading fleet, talkgroup and subscriber information.

ADN Advanced Digital Network

ADPCM Adaptive Differential Pulse Coded Modulation

ADSL See Asymmetric Digital Subscriber Line.

Advanced Packet Duplicator Duplicates dispatch voice packets for distribution to multiple cells involved in a call.

Advertising Router process in which routing or service updates are sent at specified intervals so that other routers on the network can maintain lists of usable routes.

AFC Automatic Frequency Control

AFD Architecture Flow Diagram

AFRP Automatic Fault Recovery Procedure

AG Audio Gateway

AGC Automatic Gain Control

AGCH Access Grant Channel

Agglomeration If an MS requests a Group Call and if a call for the same fleet and talkgroup already exists elsewhere (i.e., not in the requester's cell) the requester's call will be agglomerated with the existing call. Agglomeration will occur if a Local, Select Service Area, or a Wide Area Group Call exists in other cells. Agglomeration can occur if the second call is a Local, Select Service Area, or a Wide Area Group Call. Agglomeration occurs even if the Service Areas of both calls do not overlap; for example, two Local Area calls, one in Milwaukee and one in Indianapolis, will


agglomerate even though the requesters of each call had no intention of talking to one another. Agglomeration is distinct from joining.

AGL Above Ground Level

AGT Audio Gateway Transcoder

AIC Ampere Interrupting Capacity

AIN Advanced Intelligent Network

AIS In T1 it stands for Alarm Indication Signal. A higher order system (e.g., a device which combines several T1s into a DS2, DS3, or DS4) has lost sync with its higher order line and has no data to send down this T1. AIS is indicated by the higher order device sending all ones. An alarm indication signal. In a T1 transmission, an all-ones signal transmitted in lieu of the normal signal to maintain transmission continuity and to indicate to the receiving terminal that there is a transmission fault that is located either at, or upstream from, the transmitting terminal. See also T1.

AIU ATM interface unit

A-key A concealed 64-bit pattern stored in the mobile station. It is used to generate and update the mobile station’s shared secret data, which is used for authentication. See also Authentication and Shared Secret Data.

ALM/A ATM line module, model A

ALM/B ATM line module, model B

ALS See Alternate Line Service.

ALT Accelerated Life Test

Alternate Line Service The Supplementary Service that allows two telephony basic services to be associated with one International Mobile Identity Subscriber. A single Mobile Subscriber may have two telephony lines: one normal and one alternate.

AM Amplitude Modulation

American National Standards Institute Not-for-profit organization established to develop voluntary industry standards for various products.

AMI Alternate Mark Inversion

AMPS Automated Multiple Site Select

AMPS Advanced Mobile Phone System

AMTA American Mobile Telecommunications Association

Analog Paging Channel A forward analog control channel that is used to page mobile stations and send orders.

Analog Voice Channel A channel on which a voice conversation occurs and on which brief digital messages may be sent from a base station to a mobile station or from a mobile station to a base station.

ANI See Automatic Number Identification.

ANS.1 Abstract Syntac Notation

ANSI See American National Standards Institute.

APD See Advanced Packet Duplicator.

API See Application Programmer Interface.

API Advanced Provisioning Information

Application Programmer Interface Software developed by Motorola that provides a provisioning client with a simple interface to iPP, removing the necessity to understand all layers of iPP from the client.

APPN Advanced Peer-to-Peer Networking

ARM Alarm Relay Module

ARP Address Resolution Protocol

ASAI Adjunct Switching Application Interface

ASC Axis Shelf Controller

ASCE Alarm & State Change Events

ASCII American Standard Code for Informational Interchange

ASIC Application-Specific Integrated Circuits increases ATM efficiency and scalability.

ASM Alarm Service Module

Associated Control Channel If the FNE or the MS wish to send some control information while they have a voice channel established,


either one of them can append a few bytes of such data after the voice data. This is called the ACCH. This control channel is associated with the voice channel, sharing the same carrier and time slot. The ACCH provides a signaling path on a TCH. The main application of the ACCH is to support whatever layer 3 control signaling is requires for TCH supervision. Bandwidth for the ACCH is obtained dynamically by symbol stealing from the TCH.

Asymmetrical Digital Subscriber Line Asymmetric Digital Subscriber Loop is a technology which allows the use of one existing twisted pair local loop (between a PSTN Central Office and an ordinary telephone) to provide high bandwidth data and/or video services. Supports two-way transmission of voice (POTS), a downstream-only digital broadband channel of up to 9 Mbit/s for data or video distribution, and an upstream-only digital channel of up to 640 kb/s. The rates of the digital channels depend on the physical and electrical characteristics of the loop (primarily loop length) and on the ADSL technology used. Applications for ADSL include internet access, telecommuting, and video-on-demand.

asynchronous In software, an event occurring in an unpredictable fashion. A signal is an example of an asynchronous event. A signal can occur when something in the system fails, but it is not known when the failure will occur. In hardware, an occurrence that is not synchronized to the local clock. Transmission method which does not require a common clock, but instead precedes each character by a start bit, and follows it with one or more stop bits.

Aux Auxiliary

Asynchronous Transfer Mode Standard for a packet switching technique that uses fixed length packets (cells), resulting in lower processing overhead and higher speeds. A high-speed, connection-oriented switching and multiplexing technology that uses 53-byte cells (5-byte header, 48-byte payload) to transmit different types of traffic simultaneously, including voice, video, and data. Information streams can be sent independently without a common clock.

AT Attention

AT ALC AppleTalk Access List Control

ATM See Asynchronous Transfer Mode.

ATMS Advanced Traffic Management System

ATP Acceptance Test Plan

AUC See AUthentication Center.

AUI Attachment Unit Interface

Authentication A procedure used by base stations to validate a mobile station identity at system access and other times, and by mobile stations to validate a base station identity when ordered to update the shared secret data.

Authentication Center Part of HLR, generates security-related parameters that are used to ensure that only authorized Mobile Subscribers have access to the PLMN.

Automatic Number Identification The process by which the calling number is identified automatically and transmitted to the central office accounting equipment for billing purposes.

Autonomous Registration A method of registration in which the mobile station registers without an explicit command from the base station.

Availability It is a number which the APD reports to the DAP to aid the DAP in determining which Packet Duplicator among many to use. The Availability number is between zero and one and is determined by what fraction of the APD's ports are in working order. A four port APD with one port down would report an Availability of 0.75. The DAP will choose only among Packet Duplicators of the highest availability which have not reached their call limit and which have a valid LAPD session. An ESPD is always assumed to have an availability of 0.95. Since one APD should be able to handle the traffic for an entire DAP the ESPDs should not be selected for any new calls after an APD has gone on-line.


Average Delay to Abandon. Average time a caller is held in queue before they decide to hang up.

Avg Average

AVI Automatic Vehicle Identification

AVL Automatic Vehicle Location

AWG American Wire Gauge

AXU Alarm Crosspoint Unit

B B3ZS Binary 3-zero substitution

B8ZS Bi-Polar 8-Zero Substitution; all 8-zero octets are replaced by coded bytes that provoke two Bi-Polar Violations. Used in SF and ESF to accomplish Ones Density Management

BA Billing Accumulator

BA Billing Accumulator

Backward Explicit Congestion Notification This bit in a Frame Relay header always starts out as false when a frame is offered to a network. If frames traversing the same PVC but in the opposite direction are delayed due to congestion within the network then the network sets this bit (not on the frames delayed but on frames traveling toward the source of the delayed frames) When the frame with the BECN bit set reaches its destination, higher level layers are thus informed that messages sent from that end are encountering congestion and these layers may therefore throttle back the rate at which messages are submitted to the network. In iDEN this is not acceptable so the network is intended to be designed such that unacceptable congestion never occurs.

BACP Bandwidth Allocation Control Protocol

BADM Background Download Task Manager runs in the ACG

Balanced-line Interconnect Board Provides interface to 12 balanced (6-pair) 120 ohm (37-pin D-type connector) lines for 2 Mbit/s circuits. Part of the BSC.

BAMAF Bellcore Automatic Message Accounting Format

Barred Cell unavailable for traffic.

Base Monitor Radio A Base Monitor Radio is a component of an EBTS. It consists of a standard mobile radio (bandmapped to all frequencies, and with special BMR software) mounted in a rack mount chassis with an interface to the ACG through its RALP connector. The ACG uses this radio to verify proper operation of the system by placing a private call. The ACG does this on command from the OMC.

Base Radio There is one Base Radio for each carrier at each site. A Base Radio consists of one transmitter and three receivers. Each receiver has a separate antenna. The BRC chooses the receiver with the strongest signal on a symbol by symbol basis.

Base Site Controller A network element that which controls the interconnect and handover activities of several sites. OMC links to sites are also routed through the BSCs. Sometimes Dispatch frame relay is also routed through a BSC; (This implies the absence of a groomer.)

Base Site Controller Call Processor Responsible for connections from multiple EBTS sites; also routes data from EBTS sties to speech transcoder.

Base Site Controller Transcoder Converts over-the-air protocol to protocol used by the PSTN.

base station A fixed network transceiver which terminates the radio path of one or more RF channels. A BS includes at least one server and a control entity.

Base Station Subsystem The entity responsible for communicating with Mobile Stations within a certain portion of a service area. A BSS is a system of base station equipment, such as transceivers and controllers. The DMS-MSC communicates with a BSS over the A-interface.

Base Transceiver Station The entity responsible for communicating with Mobile


Stations within a certain portion of a service area. A BSS is a system of base station equipment, such as transceivers and controllers. The DMS-MSC communicates with a BSS over the A-interface.

BBU Battery Backup Unit

BC See Bearer Capability.

BCC Broadband Control Card

BCCB Business Change Control Board

BCCH See Broadcast Control Channel.

B-channel See Bearer channel.

BCS Batch Change Supplement

bd baud

BDA Bi-Directional Amp

BDM Background Debug Mode

Bearer Capability A definition of the lower-layer characteristics required within the network (PSTN, PLMN, or ISDN).

Bearer channel A 64kb/s full duplex ISDN user-to-network interface channel. The Basic Rate Interface contains two B-channels, the North American Primary Rate Interface contains 23 B-channels, and the European Primary Rate interface contains 30 B-channels. A B-channel transports a voice, data, or image call but not the signaling for the call. Normally circuit-switched by the network, the B-channel can be a switched or dedicated access to an X.25 packet switched. When circuit switched, the B-channel can transport multiplexed information streams, but only to the same destination. Since signaling is carried on the D-channel, an ISDN B-channel does not have any bits robbed for signaling, nor does it have any "ones density" requirements; therefore, a B-channel inherently has 64 kb/s clear channel capability. However, ISDN B-channel calls in the US may travel over non-clear channel facilities and therefore may be limited to 56 kb/s.

BECN See Backward Explicit Congestion Notification.

BER See Bit Error Rate.

BERT Bit Error Rate Test

BG See Browser Gateway.

BGP Border Gateway Protocol

BHCA Busy Hour Call Attempts

BIB See Balanced-line Interconnect Board.

B-interface MAP interface between a MSC and VLR.

Bit Error Rate The percentage of received bits on a digital link that are in error relative to the number of bits received, usually expressed to a power of 10.

Bit Error Ratio The percentage of received bits on a digital link that are in error relative to the number of bits received, usually expressed to a power of 10.

BITS Building Integrated Timing System - iDEN supports the Larus STS 5400.

BMR See Base Monitor Radio.

BNC British Naval Connector

BNC Bayonet-Neill-Concelman

BNM Broadband Network Module

BOC Bell Operating Companies

BOML Base Operation and Maintenance Link: 1 DS0 from OMC-R to BSC.

BOOTP Bootstrap Protocol

BOSC Base Operable System Configuration

BOT Beginning of Transmission

BPV Bipolar Violation

BPX Cisco 8600 ATM Switch or Broadband Packet Exchange

BR See Base Radio.

BRAM Battery-backed Random-Access Memory, make IGX switches self sufficient.

BRC Base Radio Controller

BRI Basic Rate Interface consists Two 64 Kpbs Bearer (B) channels and one 16 Kpbs Data (D) channel.


Broadcast Control CHannel This is the channel which the EBTS uses to broadcast System Information to MSs. Messages directed to particular MSs or groups of MSs do not appear on the BCCH. A 3:1 (typical) interleave for the BCCH means that one out of every three PCCH slots is used for the BCCH and the remaining two out of three PCCH slots are used for CCCH. This interleave is cascaded on top of the PCCH interleave. For example if the PCCH interleave is 12:1 and the BCCH interleave is 3:1 then one slot in every twelve is used for PCCH and one of every three PCCH slots is used for BCCH.

Browser Gateway This field is the IPv4 address used in packet data to identify the entity with which a MN must communicate for its browser and OAP modifications. Inclusion of this field is optional since some subscriber units may be packet data capable, but not browser and OAP capable.

BSC See Base Site Controller.

BSC-CP See Base Site Controller Call Processor.

BSC-XCDR See Base Site Controller Transcoder.

BSP Board Support Package

BSP Base Site Processor

BSS See Base Station Subsystem.

BSSAP Base Site Subsystem Application Processor

BSSMAP Base Station System Management Application Part

BSY/RTS Busy/Return To Service

BT British Telecom

BT Burst tolerance

BTA Basic Trading Area

BTC Bus Terminator Card

BTM Broadband trunk module

BTS See Base Transceiver Station.

BTU British Thermal Unit

BW Bandwidth

BX Branch Exchange

BXM Broadband Switch Module Channel Frame Relay Connection Format on MGX Shelf

byte Defined as a group of eight consecutive bits representing an information unit, such as a character.

C C/I See Carrier-to-interference Ratio.

C/I+N In iDEN Signal Quality; the ratio of the power of the desired carrier over interfering carriers plus noise; usually stated as "C to I". Also called SQE., CINRi, or CINRo.

C/N Carrier-to-Noise Ratio

CA See Call Alert.

CA Common Agent.

cabinet This term is synonymous with the term stack, used to define the Tandem DAP enclosures. A DAP consists of two cabinets; the main cabinet and the expansion cabinet. The NonStop-UX operating system, including the maintenance and diagnostics software (MDS), uses the term stack instead of cabinet.

CAC See Connection Admission Control.

CAD Computer Aided Design

CAFTP Common Agent File Transfer Protocol

CAI Common Air Interface

CAI Computer Aided Instruction

CALEA Communications Assistance for Law Enforcement Act

Call Alert A dispatch service provided by the iDEN system in which an originator specifies another MS by its Private ID and that MS will emit a little beep every so often. When the target's owner returns he knows that the originator has been trying to reach him and he can initiate a Private Call just by PTT-ing.


Call Proceeding A message sent on the CCCH in response to a Call Request or to a Page Response. When the Call Proceeding message is in response to a Call Request it informs the MS that the FNE has received the Call Request (so the MS knows that it does not have to re-send it). When the Call Proceeding message is in response to a Page Response it informs all MSs (in that cell) which have the appropriate Dispatch Group ID that a Page Response has been received (so that the FNE is not flooded with Page Response messages from many MSs).

CAP Cellular Applications Program

CAP Competitive Access Provider

Carrier Code An iDEN carrier is a number from zero to 1199 (0x4af) which specifies which pair of iDEN frequencies are used for RF communication between a BR and an MS. Each carrier channel is 12.5 kHz apart and has a bandwidth of 25 kHz. Some countries use even numbered carriers and others use odd so the channels do not overlap in any given system.

Carrier Detect A signal is generated by a dial-up modem. CD indicates its connection status. When illuminated, the modem is speaking to another modem.

Carrier Sense Multiple Access with Collision Avoidance A method of network access not covered by OSI standards and used in AppleTalk networks.

Carrier Sense Multiple Access/Collision Detect A physical layer (of a network) in which a device using the network can sense if another device is transmitting on the network. If not then any of multiple users can access the network by starting to transmit data. If more than one device tries to transmit at the same time each device can detect this collision and stop transmitting (and try again at a later time). Ethernet is a CSMA/CD type of physical layer. CSMA/CD (Carrier Sense Multiple Access with Collision Detection) The access method used in Ethernet. All nodes are attached to a single cable and contend equally for access to the transmission medium. if two nodes attempt to send data at the same time, they "sense" each

other's signal and immediately stop sending. They will both try to send again after Waiting a random number of microseconds.

Carrier-to-interference Ratio Also called CIR. In the mobile cellular telephony industry, the ratio of the amplitude of a signal strength of a carrier, C, to the amplitude of any combined interference, I. I includes both noise and other carrier signals, and is dominated by co-channel interferers (those using the same frequency in other cells).

CAS Common Agent Supported

CAS See Channel Associated Signaling.

CB Channel Bank. Telephony

CBR Constant Bit Rate

CBUS Control Bus

CBUS Clock Bus

CBUS Clocking Serial BUS

CC Control Component

CC See Country Code.

CC Compression Control

CC Central Controller (Motorola Analog Trunking)

CC Control Cabinet

CCB Change Control Board

CCC Central Control Complex: CCC consists of CPU, CMC, PS, & DS.

CCCH See Common Control Channel.

CCF Conditional Call Forward

CCH See Control Channel.

CCH See Connections per Circuit per Hour.

CCIR International Radio Consultative Committee

CCITT (Le Comitté Consultative International du Telegraphie et Telephonie) Consultative Committee for International Telegraph and Telephone. An international organization of communication carriers, especially government telephone monopolies,


responsible for developing telecommunication standards by making recommendations.

CCITT E.212 (Comite Consultatif International de Telegraphique et Telephonique) Current standard is ITU (International Telecommunication Union).

CCITT No. 7 Consultive Committee International Telegraph and Telephone Number 7.

CCP See Common Controller Platform.

CCP Common Control Platform - Tandem computers will be used to replace IMP computers for DAP and to replace existing computers for BSC.

CCPE Cabinetized Customer Premises Equipment

CCS See Centi Call Seconds.

CCS Hundred Call Seconds

CCS See Common Channel Signaling.

CCS7 See Common Channel Signaling Number 7.

CCSI Customer Center for Systems Integration

CD Carrier Detect

cd change directory

CD See Carrier Detect.

CD ROM Computer Disk Read Only Memory

CDMA See Code Division Multiple Access.

CDMA Channel The set of channels transmitted between the base station and the mobile stations within a given CDMA frequency assignment. See also Forward CDMA Channel and Reverse CDMA Channel.

CDMA Channel Number An 11-bit number identifying the center of the CDMA frequency assignment.

CDMA Frequency Assignment A 1.23 MHz segment of spectrum centered at a discrete frequency identified by the CDMA Channel number. The allowable channels are centered on

one of the 30 kHz channels of the AMPS system.

CDNI Cabinetized Digital Network Interconnection

CDPD Cellular Digital Packet Data

CDR Call Data Record

CDR Call Detail Recording

CDVLR Current DVLR address

CDVT Cell delay variation tolerance

Cell 1. In cellular radio systems a cell is the geographic region covered by a single cellular or PCS base station. A CGSA (Cellular Geographic Serving Area) is typically subdivided into clusters of cells where each cell uses a different set of frequencies to minimize interference. 2. In iDEN a cell is a place covered by one PCCH. An EBTS may have one cell (typically with an omni-directional antenna). This is called and omni site. An EBTS may have two or three directional antennas. Each of these antennas covers one cell. Minimum unit of coverage in an iDEN system. Usually refers to one EBTS. An omni site would have one cell, a sectored site will normally have three cells. 3. In networking in ATM (also called cell relay) a cell is the standard 53 byte PDU, similar in concept to a frame (Layer 2) in frame relay or to a packet in packet switching, into which information is segmented for transmission using ATM. The ATM Cell has a five byte header and contains 48 bytes of payload.

cell identifier A two-octet extension appended to the global LAI which uniquely identifies a cell within a location area. Where a cell is a member of multiple location areas, that cell will have multiple cell identifiers.

Cell Relay A technique defined for high speed, efficient multiplexing. Cell Relay differs from Frame Relay in that the unit of transfer is a fixed-size entity called a cell. Like Frame Relay, Cell Relay defines protocols only up to the Data Link Layer. The definition and format of the cells is defined at this layer, as well as the type of services that can be supported.


Cell Resource Manager Cell Resource Manager is a task which runs in the ACG and assigns resources to channels for calls (both Dispatch and interconnect), DCCHs etc. This task is the cell resource manager. It handles allocation of voice and control channels to support ACG call processing. Including voice channels to support dispatch and telephone calls. It also handles prioritization of calls, busy queuing, preemption for emergency call services, packet channel allocation, collection of performance statistics and broadcast of system information type: zero, one and six messages. The CRM also provides the interface from the State Manager task to the other call processing tasks to do fault recovery for active calls when a resource failure occurs.

Cell Site The physical location of a cell’s radio equipment and supporting systems. This term is also used to refer to the equipment located at the cell site.

cellular A mobile telephone system developed by Bell laboratories that divides geographic areas into cells. In each cell low powered radio equipment is placed so the same frequencies can be reused in nearby (but not contiguous) cells without interference. Previously call capacity was severely limited because each telephone call in a city required a separate frequency. Cities used a single powerful radio transmitter / receiver for mobile telephone service.

CELP See Code Excited Linear Prediction.

Cental Office Telephone company facility that joins individual subscriber lines to switching equipment for connecting other subscribers to each other, locally or long distance

Centi Call Seconds One hundred call seconds or one hundred seconds of telephone conversation.

Central Processing Unit: Microprocessor that forms the central core of a computing platform. Uses the programs and data stored in memory modules to respond to incoming messages from the system and then issues commands to the system to perform the required actions.

CEPT The European Conference of Postal and Telecommunications Administrations. An association of European Telecommunications service providers. It in turn participates in relevant areas of the work of Cen/Cenelec. Formerly extremely powerful and was originally responsible for the Net standards, but these have subsequently been passed on to ETSI.

CEPT1 E-carrier (E1) A rate of 2.048 Mb/s in the European digital transmission hierarchy defined by CEPT. Commonly known as E1.

CF See Cross Fleet.

CF Call Forwarding or Collection Function

CFL Cancel Fleet Location.

Channel Defined as a communication path for one voice conversation, or data. See also Physical and Logical Channel definitions.

Channel Associated Signaling Allows IGX switch to offer high-quality voice carried over digital interfaces.

Channel Service Unit The CSU provides the EBTS with an FCC Part 68 approved interface to T1 lines. Digital interface device that connects user equipment at the customer site. A device installed on a T1 line between a network element and the outside world to help service technicians diagnose problems.

CI Cell Identity

CIBC Customer Information & Billing Center; also called the ADC.

CIC See Circuit Identity Code.

CINRi Carrier Power/(Interference + Noise) Ratio for inbound, Measured Signal Quality of a channel.

C-Interface The Mobile Application Part (MAP) interface between a Mobile-services Switching Center (MSC) and a Home Location Register (HLR) using MAP/TCAP signaling over CCS7 SCCP and MTP.

CIOE Cabinetized Input-Output Equipment

CIPC Call Intercept Provisioning Center

CIR See Committed Information Rate.


CIR See Carrier-to-Interference Ratio

Circuit Data A method of moving files and Faxes between the PSTN and iDEN data-capable MSs. A data-capable MS is assigned a second telephone number for circuit data. When that number is called by someone on the PSTN the call is routed to an IWF (which has a modem). The IWF accepts the call on behalf of the MS and converts the data to an iDEN usable form. The circuit data feature is usable PSTN -> MS, MS -> PSTN, or MS -> MS.

Circuit Identity Code CICs (universally pronounced "kicks") are used to carry interconnect voice in digital format. On an Enhanced configuration, a CIC identifies a 64Kbps channel on a span between an MSC and an ERXCDR. In addition, in a basic configuration, a CIC also refers to a 16Kbps channel between an RXCDR and a CP-BSC. In general use in PSTN: Carrier Identification Code; see 10XXX.

Circuit Switched Data Circuit switched data, available on the iDEN system, involves keeping a circuit open between users for the duration of the connection. This is the best method for fax and file transfer and two of the most significant applications defining true mobility in wireless communications.

Circuit switching The transmission technique in which a physical circuit is established between sender and receiver before transmission takes place. When the transmission is complete, the circuit is freed.

Cisco IOS ™ Cisco Internetwork Operating System

CL Cancel Location

Class of Service A Supplementary Service that associates a Mobile Subscriber to a Customer Group. When a Mobile Subscriber is associated with a Customer Group, the Mobile Subscriber inherits all of the services assigned to that Customer Group.

CLI Command Line Interface

CLI Calling Line Identifier

Client/Server The division of an application into two parts; a front end client and a back end server. It allows multiple front ends running on a PC or Unix workstation (client) to access the same SQL based server database at the same time over the LAN. The aim is to off-load as much processing as possible to the intelligent desktop leaving only the shared information and the software for managing it at the central server. An application that is running in such a fashion with client and server linked by a LAN is termed a bifurcated application.

CLIP Calling Line Identification Presentation

CLIR Calling Line Identification Restriction

CLIR Calling Line ID Request

CLIRSUPP Calling Line ID Request/Suppress

CLK Clock

CLKX Clock Extender (Located in BSC)

CLLM Consolidated link-layer messages

CLMI Cabnetized Line Module ISDN

Clone A fraudulent subscriber station created by copying a MIN-ESN pair from a legitimate subscriber’s over-the-air transactions.

CLP Cell loss priority

CLT Controller

CM See Configuration Management.

CM Computing Module

cm centimeter

CMC Central Message Controller

CMIP Common Management Information Protocol

CMIS Cabinetized Miscellaneous Equipment

CMOS Complementary Metal Oxide Semiconductor

CMP Control Message Protocol

CMS Commercial Mobile Service

CMSS Cabinetized Miscellaneous Spare Storage


CM-SS Call Management-Supplemental Services

CNRC See Customer Network Resolution Center.

CO See Central Office.

CO/NEBS Central Office/Network Equipment Building Standard

COA Care Of Address

Code Channel One of the orthogonal subchannels of a CDMA Forward CDMA Channel. Code channel zero is the pilot channel. Code channels 1 through 7 may be assigned to either Paging Channels or Traffic Channels. Code channel 32 may be assigned to either the Sync Channel or to Traffic Channels.

Code Division Multiple Access Supports applications for cellular 800 MHz and Personal Communications Services (PCS) 1900 MHz applications.

Code Excited Linear Prediction CELP is a general class of enhancements to Linear Predictive Coding (LPC) using a limed number of excitations or codes from a codebook instead of the simplistic noise and pitch sources used in un-enhanced Linear Predictive Coders for speech coding.

CODEC Coder-Decoder

Codeplug A codeplug is an area of nonvolatile memory in an MS. The MS maintains there all the information it needs every time the MS is power cycled. The firmware holding the unique personality for a system or device. The codeplug is programmable and allows change to system or unit parameters.

COF Customer Order Fulfillment

Color Code The beauty of cellular communications is that a set of frequencies used for sites in one place can be reused a few miles away. A color code is a four bit number transmitted on the BCCH so that an MS can differentiate between nearby cells reusing the same frequency for their PCCH. A cell specifies its neighbor cells by both frequency and color

code so that there is no chance of an MS camping on the wrong cell.

Comfort Noise Noise generated during discontinuous voice transmissions to make the audio more pleasant to the listener. When the transmitting MS determines that the user is not speaking it sends a comfort noise VSELP frame to the FNE and neglects to transmit for as many as the next three packets (in order to save battery power). MSs receiving a Comfort Noise VSELP packet respond by generating a little background noise (so the MS doesn't sound dead) for the comfort noise packet and as many as three subsequent null packets.

Committed Information Rate The average rate of information transfer a subscriber has stipulated for a Frame Relay (Q.922) Permanent Virtual Circuit. The CIR may be exceeded for short durations without risk of the network dropping frames. On some networks longer bursts of data above the CIR are accommodated by buffering or by marking it as low priority. Provides deterministic performance and fairness per connection and inhibits one traffic from blocking out another.

Common Agent A DAP system feature which includes a software library and task, providing standard and centralized network management.

Common Channel Signaling Allows IGX switch to offer high-quality voice carried over digital interfaces.

Common Channel Signaling Number 7 A message-based signaling protocol that segments into layers the interconnection and exchange of information that occurs between signaling points in a network. Different standard organizations have used the terms Common Channel Signaling Number 7 (CCS&), Common Channel Signaling System Number 7 (CCSS7), and Signaling System 7 (SS&). SS7 can be substituted for CCS7 or CCSS7.

Common Control Channel The CCCH is reserved for data messages directed to particular MSs or groups of MSs. It is the (outbound) channel on which DCCH assignments, pages, "Call Proceeding", call "Grant" messages etc.


are sent. It is a subslot of the PCCH and SCCH channels.

Common Control Channels See CCCH.

Common Controller Platform The CCP group develops and maintains software to allow an iDEN application to run on the Common Controller Hardware.

Compressed Audio Routing Defined as the digital process that reduces the bits necessary to encode and transmit information.

Configuration management See CM.

Configuration Management The identification and control of a system's hardware, software, firmware, documentation, test fixtures, and test documentation. It includes changes made to each of these system components throughout the development and operational life of the system.

Configuration Manager See CM.

Connection Admission Control: Traffic management feature the IGX switch employs.

Connections per Circuit per Hour How many phone calls one circuit was able to complete in one hour.

Control Channel The call setup and management interface between the cell site and the mobile made of common and dedicated control channels.

COS See Class of Service.

COSC Company Owned Service Center

Country Code CC is a database parameter. The combination of 1, 2, or 3 digits that identify the country to which the originating subscriber is registered.

Coverage Area A geographical area in which a mobile will receive satisfactory signal-to-noise ratio (Eb/N0) in both forward and reverse links. Evaluation of coverage for a CDMA system must take into account the effects of soft handoff and multipath, as well as signal strength.

COW Cell-site On Wheels

CP Call Processing refers to the function of getting the calls through as opposed to downloading, handing over, reporting alarms, etc. In the context of the ACG it refers to a set of ACG tasks that process calls. The Digital Multiplex System (DMS) software system that handles the process involved in setting up connections between calling and called parties.

CP Circuit Pack

CP-BSC It is a Call Processing BSC, i.e., it only processes calls, it does not include transcoder capability.

CPCI Cabinetized Peripheral Controller ISDN

CPDC Cabinetized Power Distribution Center

CPE See Customer Premises Equipment.

CPL Closed Problem List

CPM Central Processor Memory

CPR Coupled Power Ratio.

CPU See Customer Replaceable Unit.

CPU See Central Processing Unit.

CR Carriage Return

CR Change Request

Craftperson Refers to any person that enters data from a terminal. In other words, it implies a person executing ADC commands.

CRC See Cyclic Redundancy Checks.

CRC Customer Response Center

CRM See Cell Resource Manager.

CRO Controlled Roll Out.

Cross Fleet A call or other operation which involves members of two or more fleets. At this time, Cross Fleet calls are limited to individual services (e.g., Private Call) for fleets on the same DAP.

CRU See Customer Replaceable Unit.

CS Correlation Services

CS PDU Convergence Sublayer Protocol Data Unit


CS Circuit Schematic

CS-ACELP Conjugate structure-algebraic code excited linear prediction

CSC Call Status Check

CSD Circuit Switching Data

CSDDS Circuit Switched Digital Data Services

CSDR Customer Support Desk Representative

CSLC Cabinetized Power Distribution Center

CSLIP Compressed Serial Line Interface Protocol

CSMA/CA See Carrier Sense Multiple Access with Collision Avoidance.

CSMA/CD See Carrier Sense Multiple Access/Collision Detect.

CSR Cellular System Release

CSU See Channel Service Unit.

CT-1 Cordless Telephone – First Generation

CT-2 Cordless Telephone – Second Generation

CTI Coaxial Transceiver Interface

CTI Cycle Time Inhibitor

CTL Control (Base Radio Control)

CTME Cabinetized Trunk Module Equipment

CTP Cycle Test Plan

CTRL Control Router task runs in the ACG.

CTS Clear to Send

CUG Closed User Group

Customer Network Resolution Center The customer response team. For phone numbers see the References section in this document.

Customer Premises Equipment Communications equipment at customer's site used to process or terminate information from the public network, for example, a T1/E1 multiplexer or a PBX.

Customer Replaceable Unit A modular hardware assembly that is designed for easy access, removal, and installation by a system administrator or other system operations personnel. No tools or specialized technical skills are required for the physical removal and replacement of a CRU. See also field-replaceable unit (FRU).

Customer Replaceable Unit A modular hardware assembly that is designed for easy access, removal, and installation by a system administrator or other system operations personnel. No tools or specialized technical skills are required for the physical removal and replacement of a CRU. See also field-replaceable

CVM Channelized voice module

CVO Commercial Vehicle Operations

Cyclic Redundancy Checks Algorithm included in Frame Relay for detecting corrupted bits so bad data can be discarded.

D D/A Digital to Analog (converter)

DA Dispatch Authentication (as in DA-capable Mobile Station).

DA-Capable See Dispatch Authentication-Capable.

DACCS See Digital Access Cross-Connect Switch.

D-AFUN Dispatch Access Function

DAP See Dispatch Application Processor.

DAP Analysis and Response Team The team responsible for handling third level on-call field issues involving hardware and/or software failures for the dispatch subsystem.

D-ARFUN Dispatch Audio Routing Function

DART See DAP Analysis and Response Team.

DAT Digital Audio Tape


DAT Dispatch Air Time (Billing)

Data Circuit-Terminating Equipment For example a modem connected to a computer; the computer is a DTE.

Data Terminal Equipment Data communication devices such as computers and terminals that function at the user's end of the user-to-network interface.

Data Transmission Defined as an iDEN data communication service which allows faxes and file transfers to be sent via laptop connector via an RS232 port to the iDEN phone.

DB Database

dB Decibel

DB-15 15-pin D-subminiature connector.

DB-9 9-pin D-subminiature connector.

dBc Decibel relative to carrier

DBm Decibels relative to 1mW

DBMS DataBase Management System

dc See Direct Current.

DC See Device Controller.

DCA See Dynamic Channel Allocation.

DCAP Dynamic Channel Allocation Procedure

DCC Digital Cross-Connect

DCC DAP Communication Composite

DCCH See Dedicated Control Channel.

DCE See Data Circuit-Terminating Equipment.

DCE See Data Communications Equipment.

DCP Data Channel Procedure

DCS See Digital Cross-Connect System.

DCS1800 Second Generation GSM

DCSPL DC Supply

DCSPLY DC Supply

DDF Dynamic Debugging Facility

DDM Dual Device Module

DDS Digital data service: AT&T's Digital Dataphone Service

DDTS See Distributed Defect Tracking System.

DDU Digital Data Unit

DDU Disk Drive Unit

DEA See Deactivate.

Deactivate A dispatch call service provided by the iDEN system.

Dedicated Control Channel A channel used to send data between two applications for a call service. The DCCH is used for signaling between the FNE and an individual MS. The main application of the DCCH is to support the more extended layer 3 control procedures which would be inefficient if conducted on the PCCH. It is also used for user data (the Short Message Service).

default A pre-defined set of parameters a device uses for its operations until other system specific information is entered.

deg degree

DEI DAP Enhanced Installation

Dekey In iDEN to dekey means to release the PTT button. Keying is the opposite of dekeying.

DEMON Delivery Of Electronic Multimedia Over The Network

DES Data Encryption Standard

Device Controller A Digital Multiplex System (DMS) circuit card that provides an interface between the Input/Output Controller (IOC) and external Input/Output Devices (IODs) such as the Visual Display Unit (VDU), the Magnetic Tape Drive (MTD), and the Maintenance and Admin.

DF Distributing Frame

DFD Delete Fleet Data

DGC Dispatch Group Call

DHCP Dynamic Host Configuration Protocol


DHLR See Dispatch Home Location Register.

D-HLR See Dispatch Home Location Register.

DI Document Index

Dial VPNs Dial Virtual Private Networks

DID Direct Inward Dial

Digital With digital technology, sound is converted into electronic bits, as opposed to the “waves” used in analog service.

Digital Access Cross-Connect Switch A channel bank/multiplexer that distributes DS0s of a T1 between the ACG, EBTSs and the BSC and/or MPS. The DACS remove the routing and switching burden from the BSC. Its purpose is to split the T1s coming from the EBTSs, and route the proper channels to either the BSC or the MPS. It routes certain channels to the MPS for dispatch, and certain channels to the BSC for interconnect.

Digital Cross-Connect System Transmission equipment used to set up a semi-permanent connection under the control of a network manager; allows for distributed switching within a public network; provides efficient traffic routing by switching voice and data to available bandwidth in DCS differs from a normal voice switch, in that a switch sets up a temporary connection under the control of the end user.

Digital Multiplex System Northern Telecom designation for its family of digital switches. A Central Office (CO) switching system in which all external signals are converted to digital data and stored in assigned time slots.

Digital Multiplex System Mobile-services Switching Center Offers all the functionality of a Mobile-services Switching Center (MSC) in a PLMN and contains an integrated Visitor Location Register (VLR).

Digital Services Level 0 64kB PCM bit stream; one 8-bit octet (byte) in the 24 octet bit stream of the T1 carrier.

Digital Services Level 1 24 x 64 Kpbs DS0 words (plus framing bit) = 1 Frame; 1.536 MB PCM bit stream or 1.544 Mbps uses T1 carrier.

Digital Services Level 2 Also referred to as T2; a standard for high-speed digital transmission. 4 DS1s (96 DSOs); 6.312 Mbps, uses T2 cable.

Digital Services Level 3 Also known as T3; 28 DS1's multiplexed together (672 DS0s); 44.736 Mbps, uses fiber optics; 672 Channels.

Digital Speech Link A 32 frame digital multiplexed carrier with 30 DS0 level voice channels and two message channels. 20 T1 frames = 16 DS30 carriers.

DIMM Dual In-line Memory Module

DIN Deutsche Industrie-Norm

D-interface MAP interface between the HLR and VLR.

DIP Dual In-line Package

Direct Current Electric current that travels continuously in one direction along a conductor.

Dispatch It is the original, pure purpose of land mobile radio. A taxi company dispatches a taxi to a customer's location; a police department dispatches a patrol car to the scene of a crime; a plumbing company dispatches a plumber to an overflowing toilet. This dispatch feature has been integrated with a cellular telephone system, hence integrated dispatch enhanced network. Dispatch features include Group calls (LA, SSA, and WA) private calls, MS Status, and call alert. Packet Data may be considered a Dispatch feature because it uses the DAP for Packet Data registration and the MPS for transporting data.

Dispatch Application Processor The DAP is the brain of the iDEN dispatch function. The DAP provides the communications processing and database management functions necessary for overall coordination and control of dispatch communications.

Dispatch Authentication-Capable iDEN radios which request authentication from the DAP upon power up.


Dispatch Group ID A three byte number sent from the DAP to the MS at the time of registration. The dispatch group ID is unique to a fleet and talk group.

Dispatch Home Location Register The non-real-time provisioning database for dispatch subscribers. This database should not be confused with the HLR or iHLR.

Dispatch Individual ID Similar to Dispatch Group ID except unique to an individual MS and used for Private dispatch calls

Dispatch Location Area A defined geographical area containing one or more site controller cells. Each MS in the iDEN system has a location area identifier (LAI) assigned to it. This defines the general area where the MS is currently located. The DLA is defined by the mobility manager in the DAP. NOTE, because the number of cells (EBTSs) provisioned on a single DAP may be different than those provisioned on a BSC, the DLA and ILA (Interconnect Location Area) may be different.

Dispatch Location Area Identifier Every cell has at least one DLAI; (a primary DLAI) many cells can have the same DLAI. A cell can have as many as two secondary DLAIs. All these DLAIs are broadcast in the System Information. When an MS registers it notes the primary DLAI of the cell in which it has registered. When the MS moves to another cell it looks for this same DLAI in the new cell's Sys info. If the MS finds it (as either primary or secondary DLAI) then it does not do a dispatch registration, only an interconnect registration (Location Update) if appropriate. The DAP does not keep track of which cell an MS is in. The DAP keeps track of which DLAI each MS last registered in and when the DAP pages that MS (for group calls, private calls or call alert) it pages every cell that has that DLAI.

Dispatch Networking The concept of Dispatch Networking spans both Vertical and Horizontal dimensions. Dispatch Networking techniques will enable Mobile to Mobile Dispatch communications between SUs in different Urbans and within the same Urban.

Dispatch Service Area A business/marketing grouping of DLAs which is known to end users. See Select Area Calls, Local Area Calls, and Domains.

Dispatch Station A subscriber unit in a fixed location.

Dispatch Visitor Location Register The real-time call processing database for dispatch subscribers.

DiSS Distributed iDEN Switching System

Distributed Defect Tracking System This is the program iDEN uses to track defects. When a tester or a developer finds a defect he/she enters it into an appropriate database via this program. As developers work on the problem DDTS keeps track as the Defect Report (DR) moves from state to state and informs interested parties via email.

div division

DL DAP Link

DLA See Dispatch Location Area.

DLAI See Dispatch Location Area Identifier.

DLCI Data Link Control/Connection Identifier

DLM Digital Line Module

DLSw Data Link Switching

DM Delta Modulation

DM Database Manager

DM Digital Module

DMA Direct Memory Access

DMA Deferred Maintenance Alarm

DME Distributed Management Environment

DMOs Data Modification Orders

DMS See Digital Multiplex System.

DMS-HLR See Digital Multiplex System Home Location Register.

DMS-MSC See Digital Multiplex System Mobile-services Switching Center.


DMT Discrete Multi Tone also known as multi-carrier

DMT Discrete Multi Tone Multicarrier

DMT Database Migration Tool

DN Directory Number

DNC Dynamic Network Controller

DNI Digital Network Interface - network and frame relay reference.

DNI Digital Network Interconnect (for cabinetized equipment)

DNS Domain Name System

DOD Direct Outward Dial

Domain A feature which allows iDEN service providers to limit the area in which a fleet of dispatch subscribers can gain access to dispatch services. A domain consists of one or more dispatch service areas.

DOME Customer’s OMC statistics collection server

DOP Dilution of Precision

DPC Destination Point Code

DPCC Dual Plane Combined Core

DPP Data Processing Peripheral

DPS Digital Power Supply Module

DPSO Dispatch Packet Switching Office

DRA Digitally Recorded Announcement. Also known as RAN.

DRAM See Dynamic Random Access Memory.

DRx Discontinue Receive

DS See Dispatch Station.

DS Digital Standard

DS Digital Signal

DS Data Store

DS0 See Digital Services Level 0.


DS1C Two DS1s: 48 DS0s; 3.52 Mbps, uses T1C cable.



DS30, DS30A See Digital Speech Link.

DS4 Six DS3s (4032 DS0s) 274,176 Mbps, uses T4M coax or WT4 waveguide.

DSA See Dispatch Service Area.

DSD Delete Subsciber Data

DSE Data Switching Equipment

DSIP Digital Set Interface Processor

DSN Double Shelf Network

DSP Digital Signal Processor

DSRR Digital Short Range Radio

DSS Data Subchannel Symbol conveys four bits of information.

DSU Data service unit

DSX Digital Service Cross Connect

DTAP Direct Transfer Application Protocol

DTC Digital Trunk Controller handles 20 T1 trunks (480 DS0s).

DTCI ISDN Digital Trunk Controller

DTE See Data Terminal Equipment.

DTE Digital Trunk Equipment

DTH Digital Test Head

DTMF See Dual Tone Multi-Frequency.

DTMF-IVR Dual Tone Multi-frequency interactive voice response

DTTA Duplexed Tower-Top Amplifier

DTx Discontinuous Transmit

Dual Tone Multi-Frequency A signaling format that uses specific pairs of audio tones to represent decimal digits 0 through 9 and certain auxiliaries; commonly used to transmit telephone dialing to a Private Branch Exchange (PBX) or central office. Applies to microphones and key-pads.


Duplex Simultaneous, two way independent transmission of data. Example: a normal telephone call. Duplex is the same as "full duplex". Distinct from half duplex and simplex.

DVL Digital Voice Logging

DVLR See Dispatch Visitor Location Register.

D-VLR See Dispatch Visitor Location Register.

DVM Digital Volt Meter

DXX-S Large SDH backbone nodes

Dynamic Channel Allocation Dynamic Channel Allocation is an activity, performed by the CRM in the ACG, which allocates resources as needed. This sometimes involves combining or splitting unused channels. There exists a DCA Tool within the Lab tool which allows you to predict how the DCA task will respond to any configuration when the configured "Optimal Num. of BRs For a Given Cell" does not match the actual number of BRs available.

Dynamic Random Access Memory A memory chip using a constant refresh to maintain its data.

E e.i.r.p. Equivalent Isotropically Radiated Power

E1 European format for digital transmission: Similar to a T1 but with 32 channels - used in Europe. A rate of 2.048 Mb/s in the European digital transmission hierarchy defined by CEPT. Consists of thirty 64 kb/s digital channels for voice and data connections, plus 64 kb/s channels for signaling (timeslot 16) and for framing and maintenance (timeslot 0). Also known as CEPE1-t. Basic telecommunications transport scheme, widely used outside North America. 32 8-bit octets in the PCM bit stream; transmitted at 2.048 Mbps.

E3 A rate of 34.368 Mb/s in the European digital transmission hierarchy defined by CEPT.

Consists of 16 E1s, plus overhead, also called CEPT3.

EA Equal Access

EAMPS Enhanced Advanced Mobile Phone System

EAS See Environmental Alarm System or External Alarm System.

EBRC Enhanced Base Radio Controller

EBSC Enhanced Base Site Controller

EBTS See Enhanced Base Transceiver System.

EC Encryption Control

ECC Error Correction Code

ECD Engineering Change Document

Echo cancellation A technique used in high-speed modems to isolate and remove unwanted signal energy created by echoes of the transmitted signal. (An echo is the return of a transmitted signal). It would be noticeable by its absence on transatlantic or other time differentiated phone conversations.

ECM Error Correction Mode

ECM Engineering Change Memorandum

ECN Explicit congestion notification

ECP Encryption Compression Processor

E-CPBSC Enhanced Call Processing Base Site Controller

ECS-10T Base unit for X.50 converter module

ECS-5T Base unit for X.50 converter module

EDACS Enhanced Digital Access Communications System

EDSP ESMR Dispatch Service Provider

EEPROM See Electronically Erasable Programmable Read Only Memory.

EFCI Explicit Forward Congestion Indication

EGA Enhanced Geographic Area

EGB Exterior Ground Bar


EGP Enhanced General Purpose Processor

EGPROC Enhanced Generic Processor Card

EIA Electronic Industries Association

EIR See Equipment Identity Register..

EIU Ethernet Interface Unit

ELCM Enhanced Line Concentrating Module

Electromagnetic Interference The leakage of radiation outside a transmission medium due to high-frequency energy.

Electronically Erasable Programmable Read Only Memory An EEPROM is a non-volatile chip using current to erase the memory before re-programming. The chip is read/write capable and electrically erasable. A non-volatile, read/write capable, and electrically erasable chip which uses current to erase the memory before reprogramming.

ELMI See Enhanced LMI.

ELP Ethernet LAN PCI card

EM Event Manager

EMBARC Electronic Mail Broadcast to A Roaming Computer

Emergency Calls It is an iDEN feature in which advanced feature MSs can be provisioned such that they can make Emergency Group Calls of such over-riding priority that existing calls are torn down (if necessary) in order to release resources for the Emergency Call. Also known as EAC.

EMI See Electromagnetic Interference.

EMK Emergency Key

EMS Engineering Manual Section

EMSP Expanded Mobile Service Provider

EMX Electronic Mobile Exchange

Encapsulation The process of sending data encoded in one protocol format across a network operating a different protocol, where it is not possible or desirable to convert between the two protocols. For example, where Ethernet LANs attach to an FDDI backbone, it is not possible to

convert between the different packet formats, so the Ethernet packet is encapsulated in its entirety inside an FDDI packet as it crosses the bridge on to the FDDI network. When the encapsulated Ethernet packet reaches the bridge connecting the destination Ethernet LAN to the FDDI network, the Ethernet packet is stripped out of the FDDI packet and put, unchanged, on to the destination Ethernet LAN. Also known as protocol tunneling.

Enchanced LMI Enables IGX switch and router to dynamically exchange traffic shaping information for the various PVCs on the interface.

ENET See Enhanced Network.

E-NET Ethernet

Enhanced Base Transceiver System The iDEN Radio Frequency (RF) transmission/receiver site consisting of a set of radio transceivers, controlling equipment and antennas; provides radio coverage for a specific geographic area. This site contains the ACG, BR and other controlling equipment.

Enhanced Network A channel-matrixed time switch that provides pulse code modulated voice and data connections between peripheral modules (PMs); also provides message paths to the Digital Multiplex System (DMS)-bus components.

Enhanced Specialized Mobile Radio An ESMR is an updated, integrated radio-telephone and dispatch communications system.

Environmental Alarm System or External Alarm System Located in the EBTS cabinet, the EAS provides a central location for processing alarm signals for the EBTS. Hardware on the EBTS that allows the ACG to monitor and modify the site environment.

EOML EBTS OMC Link is the link between the OMC and an EBTS in a system. Physically, it's a timeslot on a T1.

EOT End of Transmission - A message from the MS indicating that it is done transmitting voice packets. Compare to LOT.


EPROM See Erasable Programmable Read Only Memory.

Equipment Identity Register Functional unit that stores International Mobile Equipment Identities (IMEIs) for mobile stations and is accessed by a Mobile-services Switching Center to validate mobile station equipment.

Equipment Serial Number The ESN consists of a four digit Equipment Manufacturer's Code, an eight digit Manufacturer's Serial Number and a two digit Equipment Class Code. Fourteen of the 15 digit IMEI number.

ER Explicit Rate

Erasable Programmable Read Only Memory A non-volatile, read-only chip (with a quartz window on the top) which requires UV-light to erase memory before reprogramming

ERFC Expansion RF Cabinet

Erlang A dimensionless unit of measure of bearer channel (generally voice) load. For instance offered load may be defined by the product of the average arrival rate and average holding time and if these two quantities are expressed in the same units (i.e., per second and seconds) then the result is the dimensionless Erlang offered load. Erlangs are named in honor of A. K Erlang, a Danish mathematician who is considered the founder of traffic theory. The international, dimensionless unit of traffic intensity, known as a traffic unit (TU) in the US, which is the ratio of time a facility is occupied to the time it is available for occupancy. One Erlang implies 100 percent occupancy of a traffic channel. 1 Erlang = 36 CCS.

ERP Effective Radiated Power

Error control A means of ensuring that information received across a transmission link is correct. The techniques involved typically use error detection to detect if the transmitted data has been corrupted. The error control technique involves asking for data to be retransmitted until a correct version is received.

Error correction A technique to restore data integrity in received data that has been corrupted during transmission. Error correction techniques

involve sending extra data along with the original data being sent. It allows the correct form of the data to be reconstructed from the extra information if the original has been corrupted. This extra information is calculated using particular error correction algorithms such as Hamming Code. It allows errors to be detected and the original data reconstructed. This is sometimes termed forward error correction.

Error detection A set of techniques that can be used to detect errors in received data. Techniques that are applicable include parity checks involving parity bits, checksums or a Cyclic Redundancy Check.

ERXCDR Enhanced Remote Transcoder - also known as E-XCDR.

ESA Emergency Stand Alone

ESBC Enhanced Single Board Computer

ESD Electro-Static Discharge

ESF See Extended Super Frame.

ESI Ethernet Serial Interface

ESMR See Enhanced Specialized Mobile Radio.

ESN See Equipment Serial Number.

ESPD See Extended Sites Packet Duplicator.

ESPD-3 Expanded Sites Packet Duplicator 3

ET Engineering Trouble Report.

Ethernet The principle use of Ethernet in the iDEN system is between components in the EBTS. The EBTS uses Ethernet for traffic and control by running Carrier Sense Multiple Access/Collision Detect (CSMA/CD) protocol. Transmission Control Protocol/Internet Protocol (TCP/IP) is supported in the Ethernet environment in accordance with IEEE 802.X. The TDAP to OMC interface is Ethernet running X.25 protocol.

ETSI European Telecommunications Standards Institute

ETTM Electronic Toll and Traffic Management System


EV Equipment View

event log A record of events that have occurred on the system. Events are logged for and by various system resources. The event log can aid in the analysis of complex problems, and it allows gathering and generating statistics on system components.

EX Exciter

E-XCDR Enhanced Transcoder, a.k.a. ERXCDR.

Extended Sites Packet Duplicator An ESPD may be configured with one, two, or three ports (numbered zero through two). It can communicate with its DAP only on port zero. The platform for an ESPD is a VME. The phrase "Extended Sites" refers to the fact that these packet duplicators can work with 500 sites. ESPD3 can have as many as three ports.

Extended Super Frame A type of T1 protocol. In ESF the extended super frame is 24 frames long. The framing pattern sequence (0,0,1,0,1,1) occurs in the framing bit for frames 4,8,12,16,20, and 24. If in-band signaling is used (never on iDEN) it uses the least significant bit in each channel in frames 6, 12, 18, and 24. CRC-6 uses frames 2, 6, 10, 14, 18, and 22. ZBTSI uses frames 1,5, 9, 13, 17, and 21.

F F Farad

FA Foreign Agent

FACCH Fast Associated Control Channel

FAQ Frequently Asked Questions

Fax Facsimile

FB feedback

FCC Federal Communications Commission: US federal agency responsible for regulation of the public-sector communications industry, such as telephone companies and long-distance carriers.

FCI Forward congestion indicator

FCS Frame Check Sequence

FD Functional Description

FDDI See Fiber Distributed Data Interface.

FDL Facility Data Link

FDM Frequency Division Multiplex

FDMA Frequency Division Multiple Access

FEA Field Equipment Account

FEC Forward Error Correction

FECN See Forward Explicit Congestion Notification.

FEP Front End Processor

FER See Frame Error Rate.

Fiber Distributed Data Interface FDDI is compatible with the standards for the physical layer of the OSI model. An FDDI LAN is often known as a "backbone" LAN. It is used to join file servers together and to join LANs together.

FID Feature Implementation Document

FIDC Fast Intelligent Disk Controller

Field Replacement Unit A portion of the Tandem DAP hardware that is not customer serviceable. Removing or replacing a FRU always requires the use of tools and might involve exposing energy hazards or dealing with complicated assembly and disassembly procedures. FRU removal or replacement requires a Motorola Field Engineer (MFE) or Tandem customer engineer (CE) or other technically trained and qualified service personnel. See also CRU (customer-replaceable unit).

Field Test Application A program that runs in a laptop which connects to an iDEN MS which monitors call activity and signal strength. It outputs this information on the screen and can save it in a text file as well. When connected to an optional GPS receiver it includes in each line the longitude and latitude. This program replaces an earlier program (MACMIRS) which ran on a Macintosh (without the GPS feature). The MACMIRS program was similar to the RALP analyzer program which runs on your


SUN workstation under "stmenu". The FTA program is also often called iFTA.

FIFO See First In, First Out.

File Transfer Protocol A means of transferring a file between two computers which do not have a common file server but are connected by some other means. For more information use man page. FTP is defined in RFC 959.

firmware Programmable and non-programmable chips with integrated circuitry (ICs) which contain the operating program.

First In, First Out. In a busy trunked system, radio service requests are handled in the order they are received. Radio service requests are handled in the order they are received in a busy trunkated system.

FISO Fault Isolation

FISU Fill-in Status Unit

Fixed Network Equipment sites. The non-mobile infrastructure associated with providing radio communications services to mobile stations.

Flash An indication sent on a CDMA Traffic Channel indicating that the user directed the mobile station to invoke special processing.

Fleet Every MS which is provisioned for Dispatch capability (in the DAP) is assigned to one specific fleet. An MS can make Dispatch calls (and Call Alerts) only to members of the same fleet. Do not delete other people's fleets lightly.

Fleet ID Different forms of Fleet ID are used in the LFMI and UFMI branches of the FMI numbering plans. In Legacy Systems (pre-Cross Fleet), where LFMIs are used, Fleet IDs refer to either the Fleet ID entered by the operator at provisioning time or to the Fleet ID (with a $A00000 offset) which is sent encoded within the FMI field in Dispatch Messages. In UFMI-capable systems, where UFMIs and LFMIs are used, the Fleet IDs belong to the middle tier of the UFMI numbering plan. Fleet IDs refer to the Fleet ID entered by the operator at provisioning

time or to the Fleet ID which is sent encoded in the FMI field in Dispatch Messages.

Fleet Member Identifier A five-octet mobile station name which is assigned for dispatch and other individual and group oriented (multicast) services managed by HLRD or equivalent control entity. FMIs are commonly assigned on a quasipermanent basis, though dynamic reassignments are possible. There are two types of FMIs: Legacy FMIs (LFMI) and Universal FMIs (UFMI).

Flexmux Flexible Multiplexer

FM Fault Management

FMI See Fleet Member Identifier.

FNE See Fixed Network Equipment.

FOA First Office Application: The first field deployment of a release and/or a patch.

FOB Field Operations Bureau

Foreign NID Roamer A mobile station operating in the same system (SID) but a different network (NID) from the one in which server was subscribed. See also Foreign SID Roamer.

Foreign SID Roamer A mobile station operating in a system (SID) other than the one in which service was subscribed. See also Foreign NID Roamer.

Forward CDMA Channel A CDMA Channel from a base station to mobile stations. The Forward CDMA Channel comprises one or more code channels that are transmitted on a CDMA frequency assignment using a particular pilot PN offset. The code channels are associated with the Pilot Channel, Sync Channel, Paging Channels, and Traffic Channels. The Forward CDMA Channel always includes a Pilot Channel and may include a Sync Channel, up to seven Paging Channels, and up to 63 Traffic Channels. The total number of code channels, including the Pilot Channel, cannot exceed 64.

Forward Explicit Congestion Notification This bit in a Frame Relay header always starts out as false when a frame is offered to a network. If the frame is delayed in transit due to


congestion within the network then the network sets this bit. When the frame reaches its destination, higher level layers may infer that messages sent from that end could also encounter congestion and the software at these layers may throttle back the rate at which messages are submitted to the network. In iDEN this is not acceptable so the network is intended to be designed such that unacceptable congestion never occurs.

Forward Traffic Channel A code channel used to transport service option (usually voice) and signaling traffic from the base station to the mobile station.

FP Fast Packet is a high speed packet switching technology

FPLMTS Future Public Land Mobile Telecommunication System.

FR See Frame Relay.

FRAD Frame Relay access device

FRAME 24 8-bit DS0 words (192 bits) plus one framing bit for 193 bites per frame (T1)

Frame A basic timing interval in a CDMA system, For the Access Channel, Paging Channel, and Traffic Channels, a frame is 20 ms in duration. For the Sync Channel, a frame is 80/3=26.666 ms in duration.

Frame Erasure Rate Ratio of erased frames to total frames. Care should be used to distinguish between frame erasure rate and frame error rate. They are similar, but not identical. Erased Frames usually are counted as error frames, but not all error frames are erased, that is, some may be undetected by the receiver.

Frame Error Rate Ratio of error frames to total frames. For purposes of this calculation, erased frames counted as errors.

Frame Offset A time skewing of Traffic Channel frames from System Time in integer multiples of 1.25 ms. The maximum frame offset is 18.75 ms.

Frame Relay Frame relay is a standard for packet switching between a limited number of network elements.

Frame relay handles dispatch control (between DAP and EBTS and between DAP and packet duplicators) and voice (between EBTS and packet duplicators) messages.

Frame Relay Module A Frame Relay Module is a VCOM-34 communications controller providing front end processing power to the DAP.

Frame Supervisory Panel A DMS facility that accepts the frame battery feed and ground return from the power distribution center. Distributes the battery feed, by means of subsidiary fuses and feed, to the shelves of the frame or bay in which it is mounted; also contains alarm.

Freq frequency

Frequency Shift Keying A technique for modulating data that use two frequencies. Frequency shifts between the two frequencies are generated when the binary digital level changes. So one particular frequency is used to represent a binary one, and a second frequency is used to indicate a binary zero. FSK is used in low speed modems when, in full duplex transmission, two different frequencies are used in each direction, resulting in four different frequencies being used.

FRF.9 Frame Relay Forum.9

FRI Frame Relay Interface

FRM Frame Relay module

FRP Frame Relay Pad

FRSM Frame Relay Service Module

FRU See Field Replaceable Unit.

FS Functional Schematic

FSA Facility Service Agreement

FSI Fleet ID Size Indicator

FSK See Frequency Shift Keying

FSP Frame Supervisory Panel

FT1 Fractional T1, typically a DS0.

FTA See Field Test Application.


FTAM File Transfer Access/Applications Management/Method

FTM Factory Test Module

FTP See File Transfer Protocol.

FTTH Fiber To The Home

FTU First Time User

Full duplex A channel capable of transmitting in both directions at the same time. "Full duplex" is the same as just "duplex"; the word "full" is used to make it clear that the speaker is not referring to "Half duplex". See Duplex.

FXO Foreign Exchange Office

FXS Foreign Exchange Station

G GA General Availability

GB Giga-Byte

Gbps Gigabits per second

GC Group Call.

GCDR GSM Call Detail Record

GCI See Group Call ID.

GCLK Generic Clock Board (located in BSC)

GDM Guidelines for the Definition of Managed Objects

GDMO Guidelines for Development of Managed Objects

GDN Government Data Network (UK)

Gen 3 SC Generation 3 Site Controller

Gen2 BR Refers to the new second generation single carrier BR composed of a Legacy BR with an Enhanced BRC. The Gen2 BR replaces the Legacy BR. A Legacy BR becomes a Gen2 BR when its Legacy BRC is replaced with an Enhanced BRC.

General (or Generic) PROCessor Generally speaking, a GPROC handles many software tasks and performs switching control. It speaks

to and routes messages between both the MSC and EBTS. A GPROC also controls handovers from site to site (EBTS) and from radio channel to radio channel as well as manages EBTS sites connected to it. Specifically, a GPROC in the BSC-CP runs the call processing software. It controls the setup of the DS0s for voice as well as the KSW switching for those DS0s. A GPROC in the BSC-XCDR takes care of all XCDR control functions which includes carrying voice traffic and signaling data.

General (or Generic) Processor Generally speaking, a GPROC handles many software tasks and performs switching control. It speaks to and routes messages between both the MSC and EBTS. A GPROC also controls handovers from site to site (EBTS) and from radio channel to radio channel as well as manages EBTS sites connected to it. Specifically, a GPROC in the BSC-CP runs the call processing software. It controls the setup of the DS0s for voice as well as the KSW switching for those DS0s. A GPROC in the BSC-XCDR takes care of all XCDR control functions which includes carrying voice traffic and signaling data.

GENESIS A configuration tool located within an OMC for the purpose of producing configuration files iDEN NEs (network elements).

GFI Ground Fault Interrupting.

GHz Giga-Hertz =109

Global Challenge Procedure An exchange of information between a mobile station and a base station for the purpose of authenticating the mobile station identity. The base station broadcasts a challenge and each mobile station responds with its unique response while performing a system access.

global location area identifier An address which designates a location area in a unique and unambiguous manner. The global location area identifier must support title translation to identify the signaling plane destination address of the VLR call control entity which controls the location area.


Global Positioning System A US government satellite system that provides location and time information to users. See Navstar GPS Space Segment/Navigation User Interfaces ICD-GPS-200 for specifications.

Global Titling Translation Table Tool A user interface which provides for creation, validation and deployment of the GTT table to the DAP for iHLR to or from DVLR routing.

GMM T1 base unit

GMT Greenwich Mean Time

GMU SDH base unit

GND Ground

GOS Grade of Service

GPROC See General (or Generic) Processor.

GPS See Global Positioning System.

GPSR Global Positioning Satellite Receiver

GQM Goal, Question, Metric

GR General Release

Group Call A type of dispatch call which is similar to older, analog products in which everyone in the fleet has a two-way radio tuned to a common frequency and everybody tuned to that frequency can hear both sides of a conversation. For example, dispatcher: "Taxi number twelve go to 123 north state street", Taxi: "I'm on my way". An iDEN group call is similar except only iDEN MSs provisioned for the specific fleet and talkgroup can hear the call. Non-iDEN radios and even iDEN MSs in different fleets and talk groups cannot hear the conversation. iDEN group calls come in three kinds: Wide Area, Local Area, and Selected Service Area. As in all Dispatch voice services, only one MS can talk at a time. See PRO-PAC-012. There are also Private Calls.

Group Call ID A number assigned by a DAP to a Dispatch call, group or private, as soon as a call request comes to the DAP.

group identifier An abbreviated three-octet mobile station name which is assigned for dispatch and other group oriented services

managed by the DAP/HLRD or equivalent control entity. A group identifier is unambiguous only within the domain of the DAP/HLRD entity which assigned it and possible unambiguous only within the dispatch location area in which it was assigned. Group identifiers are commonly assigned on a quasi-permanent basis, though dynamic reassignments are possible. An individual mobile station may simultaneously support multiple group identifiers.

Groupe Speciale Mobile or Global System of Mobile Communications Standard for cellular telephones and their interconnection with the PSTN. GSM is also used to refer to the software which runs this function. Here is a European explanation: GSM (Global System for Mobile communications) A two-way, pan-European digital cellular system. Its specification is in line with ISDN and ITU-TS System 7 signaling and approved by almost all European countries. GSM operates at 900 MHz and is a forerunner to the mass market Personal Communications Networks, based on the same set of standards. GSM services include current digital subscriber services and the unique Short Message Service - a superior form of paging offering up to 160 alphanumeric characters with guaranteed delivery.

GS General Specification

GSM See Groupe Speciale Mobile or Global System of Mobile Communications.

GSP General-purpose Signal Processor

GT20 BSC Greater Than 20 BSCs (20 CPs and 20 XCDRs) per OMC.

GT4 See Global Titling Translation Table Tool.

GTMS Greater Than One Million Subscribers

GTT Global Title Translation

GTT Data Global Title Translation Table

GTT Tool Global Title Translation Table (Same as GT4)

GUI Graphical User Interface


H HA Home Agent

HABC High Availability Bus Controller

Half Duplex A two-way means of transmission, but data can only travel in one direction at a time. Example: walkie talkies.

Handoff The act of transferring control of a mobile station from one base station to another. See also Soft Handoff, Hard Handoff.

Handover In broad terms handover refers to an MS changing cells in order to take advantage of a strong signal over a weaker one. In narrow terms handover refers to changing cells while an interconnect call is in progress. If the changing of cells occurs during a dispatch call it is called reconnect. If the changing of cells occurs while the MS is idle it is called reselect. Synonym for Handoff.

handover number A directory number which is temporarily assigned to support a mobile station call when that call requires handover to a cell controlled by another MSC/VLR. When such a transfer is required, the VLR in the originating domain requests a handover number from the VLR managing that target domain. The handover number, a directory number which terminates on the target MSC/VLR, is then used to route the mobile termination through the PSTN (i.e., forward the call) to the target MSC/VLR which completes the connection to the target cell to support the handover. Upon completion of the call, the handover number is returned to the MSC/VLR which assigned it.

Handshake Part of the procedure to set up a data communications link. The handshake can be part of the protocol itself or an introductory process: the computers wishing to talk to each other set out the conditions they can operate under. Sometimes, the handshake is just a warning that a communication is imminent.

Hang Time When an MS involved in a Dispatch Call dekeys, the resources allocated for that call are not immediately returned to the idle

state. Instead the resources are kept in the TCCH state in the expectation that someone involved in the call will key within a few seconds. It is faster to reassign a call than to start it over again (typically 200 milliseconds verses 500 milliseconds). Another advantage is that a listener can respond to previous talker without fear that another call will snatch the last resource. The timer for this function resides in the DAP and is called the Hang Timer. (There are separate ones for Group and Private calls.)

Hard Handoff A handoff characterized by a temporary disconnection of the Traffic Channel. Hard handoffs occur when the mobile station is transferred between disjoint Active Sets, the CDMA frequency assignment changes, the frame offset changes, or the mobile station is directed from a CDMA Traffic Channel to an analog voice channel.

hardware The physical components of a system, such as boards and cables.

HCA Home Cell Affinity

HCDS High Capacity Digital Service

HCS Header Check Sequence

HDB3 Line code type used on E1 circuits. A European digital network transmission protocol which allows information and control data to be embedded in the transmission bit stream.

HDB3 High-Density Bipolar of Order 3

HDLC See High Level Data link Control.

HDM High-speed data module

HDSL See High-bit-rate Digital Subscriber Line.

Header The control information added to the beginning of a transmitted message. This may consist of packet or block address, destination, message number and routing instructions.

HEC Header error control

HFR High Speed Frame Relay

HIE Host Interface Equipment

High Level Data link Control An ISO standard set of protocols for carrying data over a


link with error and flow control. Similar to IBM's SDLC, versions of HDLC are under development for multipoint lines. The ITU-TS later adapted HDLC for its Link Access Protocol used for X.25 networks. It is a bit oriented data link control procedure under which all data transfer takes place in frames. Each frame ends with a frame check sequence for error detection. There is a control field at the start of each frame that allows error detection, and data link setup and data link termination. HDLC is, in fact, a misnomer, as it is not a high level protocol.

High speed Synchronous Serial Interface Interface for transferring data to or from a WAN leased line (E2, E3), or to and from a LAN via an HSSI-capable DSU and HSSI router. In iDEN, APDs are connected to the MPS via HSSI.

High-bit-rate Digital Subscriber Line Emerging standard for transmitting full-duplex at speeds up to 772 kbps over a single, unconditioned copper pair; for half-duplex transmission, HDSL allows for up to full T1/E1 link speeds.

HIPERLAN High Performance Radio Based Local Area Networks

HLR See Home Location Register.

HLR address A directory number which uniquely identifies an HLR in the ISDN/PSTN network. These numbers are used for MAP message routing when a HLR resets and needs to recover information. The HLR addresses must support global title translation to identify the SS7 signaling plane destination address of the associated device.

HMI Human Machine Interface

HMSC High Level Message Sequence Chart

HN Horizontal Networking

HN 1B Horizontal Networking Phase 1B

HO Handoff or Handover

Home Cell Affinity It is a feature of iDEN such that a fleet or individual talk groups within a fleet can be provisioned such that they will

camp on a specified cell in preference to other cells.

Home Location Register A database oriented processing entity which contains the service authorization and personality parameter databases and which performs mobility management services for a set of mobile stations which are administratively associated with it (i.e., registered to it — the “home” units.) Where multiple telecommunications services are supported, a mobile station may be registered in more than one HLR (though never more than one for a given telecommunications service).

Home RNC Home Regional Networking Code

Home System The system that is transmitting a system identification (SID) which is recognized by the mobile station as its Home SID, normally the system in which server was subscribed. (See System Identification)

HOMI Higher Order Manager (HOM) Interface

Horizontal Dispatch Networking Refers to techniques used to enable Dispatch communications between MSs in a coverage area that is partitioned into multiple sets of ACGs where each set of ACGs is under the control of a different set of Dispatch call processing functional entities. For example, horizontal techniques can be used to enable Dispatch communications between MSs in different Urbans by connecting each Urban's set of dispatch call processing functional elements and allowing more than one Dispatch call processing element to be utilized in an instance of an inter-Urban call. Note that Urbans in this example could each be a separate vertical Dispatch network. In other words, Horizontal Dispatch Networking allows Inter-Urban Dispatch services. Compare to Vertical Dispatch Networking.

Horizontal Networking Phase A A feature which provides the capability to perform Cross Fleet individual services (e.g., Private Call, Call Alert, MS Status) across all DAPs within the same Urban (Intra-Urban/Inter-DAP).


hot pull Modules or boards that do not require powering down the equipment when pulling out and replacing them.

HRTN High Speed Redundant Transport Network allows for seamless network between two independent and geographically separated iDEN MSOs. Requirements for this network may be found in PRO-TRD-046. Please note that the two MSOs may be co-located within the same building, or be geographically separated.

HSC Hot Swappable Controller

HSMR High Elevation Specialized Mobile Radio

HSO High Stability Oscillator

HSRP Hot Standby Router Protocol

HSSI See High speed Synchronous Serial Interface.

HVAC Heating, Ventilating and Air Conditioning

HVS Hospitality Voice Services

HXCDR Half-rate Transcoder Card (Dual-mode)

Hz Hertz

I I DAP IMP Dispatch Application Processor

I/O Input/Output

I12 Interleave 12 (twelve to one)

I3 Interleave 3 (three to one)

I6 Interleave 6 (six to one)

IAM Initial Address Message

IAP Interconnect Application Processor

IBN Integrated Business Network

IC Integrated Circuit

ICB Incoming Calls Barred

ICCP iDEN CPX Common Platform

ICD Interface Control Document

ICMP Internet Control Message Protocol

ICS Intertask Communication Service

ID Identifier. A name used to distinguish objects.

IDAP IMP DAP as opposed to TDAP.

IDCC InterDigital Communications Corp.

IDE Integrated Drive Electronics

IDEA Intelligent Data Equipment Adapter

iDEN See Integrated Digital Enhanced Network.

iDEN Home Location Register The Home Location Register database for DACapable and Packet Data provisioning for subscribers on the iDEN system. This database should not be confused with the HLR or DHLR.

iDEN menu The DAP main menu for normal operations. Also known as the SAMT menu.

iDEN Provisioning Protocol Protocol used between a provisioning client, or API, and the iHLR provisioning server.

iDEN-HLR See iDEN Home Location Register.

Idle Handoff The act of transferring reception of the Paging Channel from one base station to another, when the mobile station is in the Mobile Station Idle State.

IDMT iDEN Database Migration Tool

IDP Installation & Deployment Plan

IE Information Element.

IEC Inter-exchange Carrier

IEC International Electrotechnical Commission

IEEE Institute of Electrical and Electronic Engineers

IETF Internet Engineering Task Force

IF Intermediate Frequency

IFD Insert Fleet Data


iFMT iDEN Field Management Tool

iGPROC iDEN General Purpose Processor

IGRP Interior Gateway Routing Protocol

IGX Integrated Gigabit Exchange

iGX Switch Integrated GigaBit Exchange

iHLR See iDEN Home Location Register.

ILA Interconnect Location Area

ILMI Integrated Local Management Interface

IM Information Model

IM Intermodulation

IMA Inverse multiplexing over ATM

IMEI See International Mobile Equipment Identifier.

IMM International Mobile Machines

IMP Imperial Computer

IMP See Integrated Micro Products.

Implicit Registration A registration achieved by a successful transmission of an origination or page response on the Access Channel.

IMR Intermodulation Rejection

IMSI See International Mobile Subscriber Identifier.

IMTS Improved Mobile Telephone System

iMU iDEN(r) Monitor Unit

IN Intelligent Network

IN Interrogating Node: Switching node that interrogates an HLR to route a call for a Mobile Station to the DMS-MSC.

in inches or injection

INA Information Networking Architecture

INCATOT Incoming Attempts Total

individual identifier An abbreviated three-octet mobile station name which is assigned for dispatch, packet data, and other group oriented services managed by the DAP/HLRD or equivalent control entity. An individual identifier is unambiguous only within the

domain of the DAP/HLRD entity which assigned it and possible unambiguous only within the dispatch location area in which it was assigned. Individual identifiers are commonly assigned on a quasi-permanent basis, though dynamic reassignments are possible.

Initial Program Load iDEN Software Feature Classification. The IPL is the Software delivered with the Initial System and includes the software necessary to support all major subsystems or components of the iDEN Network System.

INS In Service

Integrated Digital Enhanced Network One of the most advanced wireless digital systems in the world, combining two-way radio with telephone interconnect, messaging and data communications capabilities on a single network, using one subscriber device

Integrated Micro Products The platform the HLR exists.

Integrated Services Digital Network An approach to switched digital networking that can handle a range of digital voice, data and digital image transmission. It is intended to provide end-to-end, simultaneous handling of digitized voice and data traffic on the same digital links via integrated switches. There are different access channels, according to geographic location. These include Basic Rate Access (2 x 64Kbit/s 161 + 16Kbit/s) and Primary Rate Access (1.544 (US) and 2.048 Mbit/s (Europe). ISDN standards are defined in the ITU-TS's I-Series Recommendations.

Integrated Site Controller The iSC replaces the VME based ACG. The iSG discriminates between Dispatch, Interconnect and Packet data calls and routes traffic accordingly. It also controls network timing and terminates transport facilities. An ACG platform which integrates the ACG, TFR, also called iSC2.

Integrity S4000 A Tandem Integrity-series computer based on the ServerNet SAN architecture and equipped with one or more R4400 CPU CRUs. Integrity S4000 systems run the NonStop-UX operating system.


Interconnect Short for Telephone Interconnect. A circuit administration point, other than a cross connect or an information outlet, that provides capability for routing and re-routing circuits. It does not use patch coreds or jumper wires, and typically is a jack-and-plug device used insmaller distribution arrangements or that connects circuits in large cables to those in smaller cables.

Interexchange Carrier Telephone company that is allowed to provide long-distance telephone services between LATAs, but not within one LATA.

interface Common boundary between two associated systems; translator between unequal and dissimilar objects in a communication hierarchy

International Mobile Equipment Identity It consists of a fourteen digit BCD ESN number and a one digit BCD extension number. The ESN consists of a four digit Equipment Manufacturer's code, and eight digit Manufacturer's Serial Number, and a two digit Equipment Class Code. An IMEI is a unique number identifying one and only one MS. The number is assigned to, and burned into, the MS as part of the manufacturing process.

International Mobile Station Identity/Identifier It is normally fifteen BCD digits. Parts of the number are assigned by Motorola and part are provided by the service providers. The IMSI consists of a three digit BCD Mobile Country code (MCC), a two digit National Domain Code (NDC), a n-BCD Service Domain Code (SDC), and a 10-n Local Mobile Station Identifier (LMSI). An MS is told its IMSI as a result of an IMEI registration. Thereafter it will use its IMSI for further registrations. Before powering down, the MS will store its IMSI in its codeplug so that it can do an IMSI registration when it powers up.

International Standards Organization Group that defines standards for the Open Systems Interconnection (OSI) reference model; best known for its OSI model that describes the conceptual organization of protocols and standards for network protocols. Also known as

the International Organization for Standardization

Internet Protocol A method or protocol by which data is sent from one computer to another on the Internet. Each computer (known as a host) on the Internet has at least one address that uniquely identifies it from all other computers on the Internet. When data is sent or received, the message gets divided into packets. Each packet contains both the sender’s Internet address and the receiver’s address. Any packet is sent first to a gateway computer that understands a small part of the Internet. The gateway computer reads the destination address and forwards the packet to an adjacent gateway that in turn reads the destination address and so forth across the Internet until one gateway recognizes the packet as belonging to a computer within its immediate neighborhood or domain. That gateway then forwards the packet directly to the computer whose address is specified.

Internet Protocol address A 4-byte address assigned to a station on the Internet. Every station must have a unique address, as seen from the Internet. To prevent address conflicts between linked networks, addresses (or blocks of addresses) are assigned by a central authority. An IP address is typically represented by four decimal values with period (.) separators, such as 192.74.127.32.

Inter-Task Communication header A part of most inter-task messages in the iDEN system that identifies the source and destination of the message.

interworking General term used to describe the inter-operation of networks, services, and Supplementary Services; enables processes on different systems and networks to interact in a uniform way and carry out their tasks.

Inter-Working Function A computer (or group of computers) in an MSO which accepts data calls with modems and convert this data to iDEN usable format. This computer also initiates calls on a MS's behalf and converts the data from iDEN to modem usable. The IWF is used in the Circuit Data feature.


IO Input/Output

IOC/IOD Input/Output Controller Device

IOE Input/Output Equipment

IP Intelligent Peripherals or Initialization Process

IP See Internet Protocol.

IP address See Internet Protocol address.

IPC Inter Process Communication

IPL See Initial Program Load.

IPMC Inter PM Message Links

IPO Initial Public Offering

iPP See iDEN Provisioning Protocol.

IPP iDEN Provisioning Protocol

IPR Information and Problem Report or Intellectual Property

IPX Internetwork Packet Exchange

IR Internet Router

IR Intranet (Protocol) Router

IR Incident Report

IRB Integrated Bridging and Routing

IS Intraconnect Schematic

ISA Industry Standard Architecture

iSC See integrated Site Controller.

ISD Insert Subscriber Data

ISD-LT ISDN-U interface, line termination

ISDN See Integrated Services Digital Network.

ISD-NT ISDN-U Interface, network termination

iSG iDEN Surveillance Gateway - a part of CALEA which resides in an MSO and provides a gateway to all LEMs

ISL Inter-Switch Link

ISO Isolated Site Operation: Site Trunking

ISO See International Standards Organization.

ISSEI All Fleet Group Call

Issei Call A unique system wide call feature developed for the Japan market.

ISUP Integrated Service Users Part

ITC Inter-Task Communication

ITC header Inter-Task Communication header: A part of most inter-task messages in the iDEN system that identifies the source and destination of the message.

ITG Integrated Test Group

ITMS Intelligent Temperature Monitoring System

ITU International Telecommunications Union

ITU – TS International Telecommunication Union – Telecommunication Standard. (Replaces CCITT.)

ITU-T International Telecommunications Union-Telecommunications Standardization Sector: A committee of the International Telecommunications Union (ITU) that issues and maintains international communications standards, known as Recommendations. These include the V-Series Recommendations (including V.35) and the X-Series recommendations (including X.25). ITU-T is the successor to CCITT, and the former CCITT Recommendations are now ITU-T Recommendations. ITU-T is often abbreviated as ITU.

IUL Individual Update Location

IVD Integrated Voice and Data

IVDPC Integrated Voice and Data Port Cards

IVR Interactive Voice Response device

IWF See Inter-Working Function.

IXC See Interexchange Carrier.

iXCDR iDEN Transcoder Card (Dual-Mode 48)


J JF Journal File

K k kilo=103

kbps kilo-bit per second

kg kilogram

KHz Kilohertz (103 Hertz).

Ki Authentication Algorithm (also called K sub I): A temporary security code used to authenticate a MS (mobile Subscriber). During initial registration, the MS identifies itself with it’s IMEI and a Ki. The HLR uses the MS signature algorithm to generate a set of 32 signature numbers from a set of 32 random numbers. Both number sets are transferred to a lookup table in the VLR.

Kiloport Switch A KSW card is this in a nutshell: It is a card that controls one of 2 redundant TDM highways within a BSC/XCDR cage. It makes connections and between terrestrial links (cics or trunks) and the traffic channels on the air interface.

KSW See Kiloport Switch.

KSWX Kiloport Switch Extender (located in BSC)

KSWXE Expansion kilo-port switch extender

KSWXL Local kilo-port switch extender

KSWXR Remote kilo-port switch extender

KW kilowatt

L L2F Layer 2 Forwarding

L2RCOP Layer 2 Relay Character Oriented Protocol

LA See Location Area.

LAC Local Area Controller/Code

LAI See Location Area Identity.

LAM Local Assignment Module

LAN See Local Area Network.

LAN-IC LAN-Interconnection

LANIIC Local Area Network Interface IC

LANX LAN Extender half size board

LANX Local Area Network eXtender

LAP Link Access Protocol, e.g. LAPB, LAPD, LAPM or LAPX.

LAPB Link Access Procedure "B" (balanced) channel

LAPD See Link Access Procedure.

LAPF Enhanced LAPD for Frame Relay

LAPi Link Access Protocol iDEN

LATA Local Access and Transport Area: Geographical area served by a single local telephone company

LAU Location Area Update

lbs pounds

LC Logical Channel

LC Line Card

LCA Line Concentrating Array

LCEI Line Concentration Equipment ISDN

LCF Link Control Function

LCIH Location Confirmed in iHLR

LCM Line Concentrating Module

LCME Line Concentration Module Equipment

LCME Enhanced ISDN Line Concentrating Module

LCONS Logical Connections

LD Line Drawer


LD-CELP Low-delay code excited linear production

LDI Locked, Disabled, Idle

LDI Low-speed data interface

LDM Low-speed data module

LDM Load Management

LDM Linear Driver Module

LDRI Logical DPSO Routing ID

LEA Law Enforcement Agency

LEC See Local Exchange Carrier.

LED See Light-Emitting Diode.

Legacy BR Refers to the existing single-carrier BR with a Legacy BRC.

Legacy Fleet Member Identifier A five-octet mobile station name which is assigned for dispatch and other individual and group oriented (multicast) services managed by HLRD or equivalent control entity. A LFMI is unambiguous only within the domain of the DAP/HLRD entity which assigned it. LFMIs are commonly assigned on a quasi-permanent basis, though dynamic reassignments are possible.

LEI Locked, Enabled, Idle

LEM Law Enforcement Monitor

LEN Line Equipment Number

LFA Loss of Frame alignment

LFM Linear Final Module

LFMI See Legacy Fleet Member Identifier.

LGC Line Group Controller

LI Length Indicator

Light-Emitting Diode Semiconductor diode that emits light when a current is passed through it and used as a source for optical data link applications in which the data rates are less than about 500 Mb/s and the transmission distances do not exceed a few kilometers

LINK Refers to software program in MS

Link Access Procedure Link Access Procedure on the D-channel is a connection based Data Link Layer Protocol. In iDEN, LAPD is used, for example, between DAP - EBTS. When the DAP comes up it sends SABME messages to each EBTS. Normally the EBTS responds with a UA message. Then the EBTS asks the DAP for its version number. Thereafter the DAP will send an RR message periodically (typically two seconds) to the EBTS to which the EBTS will respond with an RR message. This periodic exchange of RR messages keeps both parties aware that they are in communication. The EBTS has a timer and if the RR message doesn't come from the DAP the EBTS knows that the link or the DAP is down. Likewise the DAP has a timer and if the DAP doesn't get its RR message it knows that the EBTS or the link is down. The DAP responds to a link down by periodically sending SABME messages. The EBTS responds to a link down state by sending three SABMEs then giving up and waiting for a SABME from the DAP. LAPD is a protocol that operates at the data link layer of the OSI architecture. LAPD is a layer two protocol. The purpose of LAPD is to convey information between layer 3 entities. LAPD is described in CCITT Q.920-Q.921 which is available in the LMPS library.

Link Layer The link layer of the IS-95 air interface provides for the reliable transmission and reception of signaling messages, including error detection, partial duplicate detection and loss.

Link Peripheral Processor DMS-MSC PM cabinet that provides the signaling interface between the DMS-MSC/HLR and the CCS7 signaling network. One Local Message Switch shelf consists of two LMS units and frame bus hardware.

LIU Line Interface Unit

LLC Link Layer Controller

LM Load Manager task runs in the ACG.

L-M Abbreviation for Land to Mobile

LMI See Local Management Interface.


LMI Line Module ISDN

LMRN Land Mobile Radio Network

LMT Local Maintenance Terminal

LNA Low Noise Amplifier

LO Local Oscillator

LOC Lines of Code

Local Access and Transport Area Geographical area served by a single local telephone company.

Local Area Network A communications system that links computers into a network, usually via a wiring-based cabling scheme. LANs connect PCs, workstations and servers together to allow users to communicate and share resources like hard disk storage and printers. Devices linked by a LAN may be on the same floor or within a building or campus. It is resend and does not run over leased lines, though a LAN may have gateways to the PSTN or other, private, networks.

Local Dispatch Communication Service From a customer billing perspective, it is a Dispatch call initiated and contained within the current Urban.

Local Exchange Carrier Local phone company that provides local transmission services.

Local Management Interface A Motorola connection uses DLCI 1023.

Location Area The area covers by a single omni site.

Location Area A contiguous radio coverage area comprising a set of cells (e.g., one or more) through which a mobile station may move freely without the need to update the controlling VLR entity. All of the cells in a location area must be contained within a single radio subnetwork (i.e., they must be managed by a single VLR entity). Where multiple service specific VLR functions support a radio subnetwork, each VLR entity may support a different set of (normally overlapping) location areas and each cell would belong to one location area for each VLR entity.

Location Area Identity A global LAI consists of a three digit BCD MCC & a two digit NDC. In addition, a two octet Local Location Area Identifier is appended to define the mobile station down to a unique LA.

LOGUTIL Log Utility

LOS Loss of Signal in a T1/E1 Line.

Loss of Transmission A message sent by the BRC indicating the MS has stopped sending voice packets. Compare to EOT.

LOT Loss of Transmission: A message sent by the BRC indicating the MS has stopped sending voice packets. Compare to EOT.

LPP See Link Peripheral Processor.

LPP/ LIM Link Peripheral Processor

LR Location Register

LRE Logic Return Equalizer Bus

LSB Least significant bit

LTC Link Trunk Controller

LTU Line Test Unit

LVCP Link Version Check Protocol.

M M16QAM See Multiple Carrier Quadrature Amplitude Modulation.

MAC See Media Access Control.

MAHO See Mobile Assisted Handoff.

Maintenance and Administration Position DMS-MSC Control Terminal. It provides the DMS MMI between the wireless system and operating company personnel. Basic components include a CDU with a keyboard, a voice communications module and printers used in conjunction with the VDU.

Maintenance and Administration Position Command Interpreter Main interface between the DMS Maintenance and Administration Position (MAP) terminal and the user. Main function is to read lines from the


terminal, analyze them, recognize command items, and invoke the commands.

Maintenance Trunk Module PM that contains special buses to accommodate test and service circuit cards for maintenance; provides and interface between the switching network and the test and service circuits.

Man-Machine Interface Series of commands and responses used by operating company personnel to communicate with a DMS switch; achieved through the Maintenance and Administration Position (MAP) terminal and other Input/Output Devices (IODs)

MAP See Mobile Application Part.

MAP See Maintenance and Administration Position.

MAPCI See Maintenance and Administration Position Command Interpreter.

MAPT Mobile Application Part Task

MAU Media Access Unit

Max maximum

Mbps Megabits per second

MBX Motorola Business Exchange

MC Multicoupler

MCAP Motorola Cellular Advanced Processor

MCC See Mobile Country Code.

MCCM Meridian Cabinet Core Module

MCDM Meridian Cabinetized Data Module

MCDR Meridian Cabinet Digital Remote

MCGM Meridian Cabinet General Module

MCLM Meridian Cabinet Line Module

MCP Motorola Cellular Planner

MCPM Meridian Cabinet Power Module

MCR See Minimum Cell Rate.

MCRU Meridian Cabinet Remote Module

MCS/DMS Mobile Switching Center/Digital Multiplex Switch

MCT A maintenance level command for the MAP

MDC Message Device Controller (shelf)

MDF Main Distribution Frame

MDG See Mobile Data Gateway.

MDS Maintenance and Diagnostics Software

MDS Modular Documentation System

MDT Mobile Data Terminal

MEB Mate Exchange Bus

Media Access Control A sub-layer of the ISO data link layer for media-specific data link functions.

Megahertz: A measurement of frequency equal to one million (106) hertz. One hertz equals one cycle per second.

MEI Maintenance Event Information

MEM Memory

MEO Medium Earth Orbit

Message In IS-95, a data structure consisting of a length field, message body (or payload), and CRC for detection of errors.

Message Waiting Indication Data to be stored in the HLR and VLR with which a Mobile Station is associated, indicating there is one or more messages waiting in a set of Service Centers to be delivered to the Mobile station due to unsuccessful delivery attempt(s)

Method of Procedure The detailed set of procedures which are customized for each specific customer installation.

Metro Packet Switch A high speed digital switch providing virtual circuit connectivity between cell sites and the DAP. Provides both voice and control packet switching for dispatch call services.

MF See Multi-frequency signaling.

MFE-R2 Trunk Signaling System

MGB Master Ground Bar

MGMT-FUN Management Function


MGN Multi-Grounded Neutral

MGX See Multi-Gigabyte Exchange.

MHz See Megahertz.

MIB Management Information Base

MiBAS Motorola Integrated Billing and Administration System

Micro Node Small node for mobile networks

Midi Node User access node

MII Media Independent Interface

MIN See Mobile Identification Number.

min minute; minimum

Minimum Cell Rate Provides deterministic performance and fairness per connection and inhibits one traffic from blocking out another

Minimum Cell Rate Provides deterministic performance and fairness per connection and inhibits one traffic from blocking out another

MIP Mobile Internet Protocol

mips Millions of instructions per second

MIRS See Motorola Integrated Radio System.

MIS Miscellaneous Equipment

MISO Master In/Slave Out

MIT Mobile Interface Trunk

M-L Mobile to Land

MM Mobility Management

mm millimeter

M-M Mobile to Mobile

MMAC Multi-media Access Chassis

MMF Multimode fiber

MMI Man-Machine Interface: Series of commands and responses used by operating company personnel to communicate with a DMS switch; achieved through the Maintenance and Administration Position (MAP) terminal and other Input/Output Devices (IODs).

MMP Multi Chassis Multilink Point-to-Point Protocol

MN Mobile Node

MNC Mobile Network Code

MNS Managed Network Services

Mobile Application Part The application layer of the protocol stack between the iDEN DVLR and the iDEN DHLR (similar to GSM) in order to support the delivery of packet data provisioning and authentication information for subscribers. Set of CCITT CCS7 protocols used to handle the special information transfer requirements of Mobile Subscribers in a PLMN. Defines the interfaces among network nodes.

Mobile Assisted Handoff A means of initiating handoff based on signal quality measurements performed by the mobile station and reported by the base station.

Mobile Country Code Code identifying the home country of the Mobile Subscriber; part of the International Mobile Subscriber Identity (IMSI); three BCD digits.

Mobile Data Gateway An iDEN network element to handle the packet data service via the internet. The MDG stores a provisioned MS’s IP address in a database. This IP address is used to identify permissions and route data packets from the Internet to the MS during packet data operations.

Mobile Identification Number The 34-bit number that is a digital representation of the 10-digit directory number assigned to a mobile station.

Mobile Station A subscriber station in the Domestic Public Cellular Radio Telecommunications Service normally intended to be used while in motion or during halts at unspecified points. The category may include true mobile stations, handheld portable stations, fixed stations, and other devices. The intermediate or end system equipment used to terminate the radio path at the mobile end. It includes the functions required to support the wireless link to the radio subnetwork and to provide services to the mobile station operator or to end systems connected to the mobile station.


Mobile Station An iDEN Subscriber Unit. In the iDEN Network System, this could be a portable, mobile or desktop radio. The radio equipment a subscriber uses to access the iDEN system. Each MS uses a unique number that identifies membership in a predefined fleet and TalkGroup, its provisioned call features and its service calling area.

Mobile Station Class A code that defines mobile station maximum transmitter power, slotted operation capability, and dual-mode CDMA/ AMPS capability.

Mobile Station International ISDN Number An ISDN directory number which uniquely identifies a mobile station in the ISDN / PSTN naming domain. The call originator dials this number in order to reach a target iDEN mobile station.

Mobile Station Roaming Number A directory number which is temporarily assigned to support a call directed to a mobile station. When such a call request is generated, the mobile’s HLR is interrogated for routing instructions. The HLR determines where the target MS is located and requests a MSRN from the VLR managing that coverage domain. The MSRN, a directory number which terminates on the target MSC/VLR, is then used to route the mobile termination through the PSTN (i.e., forward the call) to the target MSC/VLR, which completes the connection to the target MS in the appropriate cell. Upon completion of the call, the MSRN is returned to the VLR which assigned it.

Mobile Subscriber Identification Number A part of the E. 212 IMSI identifying the mobile station within its home network. See ITU-T Recommendation E.212.

Mobile Switching Center A configuration of the equipment designed to provide interconnection services among wireless subscriber stations, and between wireless subscriber stations and the public switched telephone network via one or more base stations under its control. Mobile telephone switching system that acts as a key component of the PLMN; performs the functions of switching,

routing, and control of the call, charging, and accounting, and the interworking with public switched telephone networks.

Mobile Switching Office For iDEN, the MSO includes MSC, OMC and dispatch sub-system(s). In the iDEN Network System, the MSO includes MSC, OMC and dispatch subsystem(s).

Mobile Telephone Switching Office An out-of-fashion synonym for Mobile Switching Center.

mobility management The process whereby the binding between a mobile station name and its radio subnetwork point of attachment address is established and maintained as the mobile station moves from server to server within a radio subnetwork or from a server in one radio subnetwork to another server in another radio subnetwork.

MOBIS See Motorola ABIS.

Mode A mode is a collection of up to four Talk Groups which can be monitored together by an MS using the MSTG feature. Modes are created in the ADC. MSs using MSTG select a mode instead of a Talk Group. When an MS registers in a particular mode it is given a list of the Dispatch Group IDs for all the Talk Groups in that mode. The MS then listens for Pages and Grants for all those Talk Groups.

MOI Managed Object Instance

MOP See Method of Procedure.

MOSI Master Out/Slave In

Motorola ABIS Motorola adaption of the GSM A.bis protocol.

Motorola Integrated Radio System High-capacity digital-radio technology offering four integrated services for high-demand business applications through wireless voice and data communications and multi-site roaming capabilities for service providers and their users worldwide. Became iDEN as in 1995.

MPC Multi Personal Computer


MPDP MIRS Packet Data Protocol. (RF data link layer.)

MPLS Multiprotocol Level Switching

MPM Multiple Peripheral Module

MPRS Master Primary Reference Source

MPS See Metro Packet Switch.

MRN Mobile Roaming Number.

MS Message Switch

MS Mobile Subscriber

ms Millisecond (10-3 second).

MS See Mobile Station.

MS - ISDN Mobile Station International Subscriber Directory Number

MSA Metro Service Area

MS-AFUN Mobile Station Access Function

MSB Make Set Busy

MSB Most significant bit

MSC See Mobile Switching Center.

MSC address A directory number which uniquely identifies an MSC in the ISDN/ PSTN network. These numbers are used for MAP messaging when an MSC needs to talk to another MSC for an inter-MSC handover. The MSC addresses must support global title translation to identify the SS7 signaling plane destination address of the associated device.

MSI Mega-Stream Interface

MSI See Multiple Serial Interface cards.

MSIN See Mobile Station Identification Number.

msIP iDEN Mobile Subscriber Internet Protocol

MSISDN See Mobile Station ISDN Number.

MSL Modular Structure List

MSO See Mobile Switching Office.

MSRN See Mobile Station Roaming Number.

MSS MS Status

MSS Mobile Satellite Service

MSSTAT Mobile Station Statistic

MST Modular Screw Terminals

MSTG See Multi-Scan Talk Groups (or Multi Simultaneous Talk Groups).

MSTN Mobile Subscriber Telephone Number

MSU Message Signal Unit

MSU Message Sent Unit

MTA Metallic Test Analysis

MTA Maintenance Terminal Administrator

MTA Major Trading Area. There are currently 47 defined by Rand McNally.

MTA Metropolitan Trading Area

MTBF Mean Time Between Failure

MTC Maintenance Level of the MAP

MTC Magnetic Tape Controller

MTC Mobile-Terminated Calls

MTCH See Multiple Traffic Channel.

MTD Magnetic Tape Device: 9-track tape unit used on various DMS switches to store data.

MTDS Mobile-Terminated Data Services

MTL MSC/Message Transfer Link

MTM See Maintenance Trunk Module.

MTP Mobile Page Distributor and Trunk Idle List

MTP Message Transport Protocol

MTSO See Mobile Telephone Switching Office.

MTTR Mean Time To Repair

MTX Mobile Telephone Exchange

Multi-frequency signaling Signaling method that uses pairs of standard tones to transmit signaling codes and digit pulsing.

Multi-Gigabyte Exchange Cisco 8220 ATM Concentrator Port The Frame Relay Interface used on the MGX shelf.


Multiple Carrier Quadrature Amplitude Modulation Motorola Sixteen Quadrature Amplitude Modulation scheme used in iDEN with a 64 Kbps gross bit transfer rate; RF Modulation for an ESMR.

Multiple Serial Interface Line Interface to four span lines; two full-duplex T1s.

Multiple Traffic Channel A traffic channel transmitting to multiple MSs as in Dispatch; often called simply a TCH. The distinction between an MTCH and a TCH is made by the Ethernet monitor: channel analyzer program.

Multi-Scan Talk Groups (or Multi Simultaneous Talk Groups) A feature on some MSs which will allow them, if so provisioned, to scan (become involved in) as many as three talk groups in addition to their primary talk group (i.e., the talk group they would use if they were to initiate a group call).

Multi-Scan TalkGroups A feature on some MSs which will allow them, if so provisioned, to scan (become involved in) as many as three talk groups in addition to their primary talk group (i.e., the talk group they would use if they were to initiate a group call).

MUX Multiplexer

mV millivolt

MVIP Multi-Vendor Integration Protocol

MVME Motorola Versa Module Eurocard

mW milliwatt

MWI See Message Waiting Indication.

mx maximum

N N.C. Normally Closed

N.O. Normally Open

NACK Negative Acknowledgement

NAM See Number Assignment Module.

name A linguistic construct used to distinguish objects, sometimes referred to as an identifier or ID.

NAMPS Narrow-band Advanced Mobile Phone System

NAT Network Address Translation

NCD Network Computing Devices

NCS National Communications Systems

ND See No Dispatch.

N-DAP In order to increase the dispatch throughput of an MSO n number of DAPs, up to six, can be run in parallel. At the time of provisioning the Service Provider assigns each new fleet to one of these DAPs. When an MS wants to register, the ACG will send a registration probe to each DAP. In normal circumstances only one DAP will return a registration probe accept; all the other DAPs will return a registration probe reject. The ACG will then complete registration with the proper DAP. Each DAP is assigned a range for Dispatch Group IDs and Dispatch Private IDs. When the registered MS requests a service, such as a group call, the ACG knows which DAP to forward the request to by the range into which the Dispatch Group ID or Dispatch Private ID falls. Each DAP is also assigned a range for fleet numbers. N (N=1 to 6 DAPs serving one market)-Dispatch Applications Processor.

NDC Network Domain Code, Two BCD digits in the IMSI.

NE Network Element (Network Entity)

NEBS Network Equipment Building Systems

NEC National Electric Code

NEI Network Equipment Identifier

Neighbor cell In iDEN each cell broadcasts a list of neighboring cells by carrier and color code. An MS measures the strength of the signal from all these neighbor cells as well as the cell on which it is camped and decides when to change cells. A neighbor cell need not be in the MS's bandmap.

NEM Network Element Manager


NET Network (E-Net, V-Net)

Network A network is a logical subset of the base stations in a cellular system, as identified by a SID. The network is identified as a unique (SID, NID) pair. A network can be as small or as large as needed, but must be totally contained within a single system.

Network Interface Defined as the point at which the public network and its responsibility ends. Conversely, the point where CPE and customer responsibility begins, when viewed from the public network. The end-point of the public network and its responsibility. Conversely, from the public network's view, NI is the beginning point for CPE and customer responsibility.

Network Processor Module Contains the software for controlling, configuring, and monitoring the IGX switch.

NFAS Non-Facility Associated Signaling

NFS Network File System

NI See Network Interface.

NIC Network Information Center

NIC Network Interface Card

NII National Information Infrastructure

NIT Network Interface Trunk

NM Network Management

NMC Nortel Matra Cellular

NMC Network Maintenance Center, Network Management Center

NMC Network Message Controller

NMS Network Management System

NNI Network-to-Network Interface

No Dispatch. This is a flag sent to the MS during Dispatch Registration. It is set to 1 to indicate that the MS does not have dispatch service. It is set to 0 to indicate that the MS is registered for dispatch service.

no. number

NOC National Operations Center

NOC Nature of Connection

Node 1 switch module or BPX/MGX combination

NPM See Network Processor Module.

NPRM Notice Of Proposed Rule Making

NRZ Nonreturn to zero

ns Nanosecond (10-9 second)

NSS Network Switching System

NT-1 Network Termination

NTC Network Trunk Card

NTIA National Telecommunications and Information Administration

NTL Nextel Technology Lab

NTM NIC Transition Module

NTM Network trunk module

NTP Northern Telecom Publications

NTP Network Time Protocol

NTSC National Television Standards Committee

NTU Network Terminating Unit

NTWK Network

Number Assignment Module In telecommunications, retains information about the phone's individual characteristics, such as its assigned telephone number, system identification number, and other information that is necessary for cellular operation. This is not used in Global System for Mobile communications (GSM) phones, because they have a subscriber identity module (SIM) card, that serves a similar purpose.

NVRAM Non-Volatile Random Access Memory

NWN Nationwide Wireless Network

NWS Network Services


O O&M Operations and Maintenance

OAM (OA&M) See Operations, Administration and Maintenance.

OAP Over-the-Air-Programming

OAU Office Alarm Unit

OC Optical Carrier

OCOS Originating Class of Service

octet One byte or eight bits of data.

OD Outside Domain

ODBMS Object Database Management System

ODS On-line Desk Suite

OEM Original Equipment Manufacturer

OFCENG Office Engineering

OFTEL Office of Telecommunications (UK)

OLC See Overload Class.

OLCC Online Configuration Change

OM See Operational Measurement.

OMACC Operational Measurement Accumulation

OMC See Operations and Maintenance Center.

OMC-R Operations Maintenance Center-Radio Network

OMF Operations & Maintenance Function

OML Operation & Maintenance Links consists of DS0s: BOML, XOML & EOML.

OMPRT Operational Measurement Print

ONU Optical Network Unit

OOB Out of Buffer

OOD See Out Of Domain.

OOS Out of Service

Open Problem List The list of open issues given to the customer with each release delivery.

Operational Measurement DMS subsystem that includes the hardware and software resources of the switch that control the collection and display of measurements taken on an operating system; organizes measurement data and manages its transfer to displays and records. OM data is used for maintenance, traffic, accounting, and provisioning decisions.

Operations and Maintenance Center A centralized entity that monitors and controls all radio network elements. Provides alarm handling, fault and network management functions.

Operations, Administration and Maintenance All tasks necessary for providing, maintaining, or modifying the services of a switching system; tasks include provisioning of hardware, creation of service, verification of new service, and trouble recognition and clearance.

OPL See Open Problem List.

OPRT OMC Patch Release Team

OPT See Optional Maintenance Services.

Optional Maintenance Services (iDEN Software Feature Classification) On site switch support and EBTS on site maintenance. Provided on a two year basis only. Additional fee(s) required.

ORR Office Release Record

OS Operating System

OSF Open Software Foundation

OSHA Occupational Safety and Health Act

OSI Open Systems Interconnect/Interface

OSI reference model A seven-layer network architecture developed by the International Organization for Standardization (ISO). The architecture provides a common basis for the coordination of standards development for the purpose of the interconnection of information processing systems. The reference model specifies the functionality of each layer, the


interfaces between layers, and the functionality between communicating systems.

OSI/RM OSI Reference Model

OSPF Open Shortest Path First

OTA Office of Technology Assessment

OTAP Over the Air Programming

OTC Overseas Telecommunications Commission

OTP One Time Password

OTP-SASL One Time Password Simple Authentication Security Layer

Out Of Domain This is a flag sent to the MS during Dispatch Registration and Registration Renewal. It is set to 1 if the Dispatch Location Area in which the registration takes place is outside of the MS’s dispatch service domain. It is set to 0 if the Dispatch Location Area in which the registration takes place is in the MS’s dispatch service domain. When the MS is not in its dispatch service domain, it is not allowed to initiate a dispatch call and will not respond to or join a dispatch call.

OV Operational View

Overhead Message A message sent by the base station on the Paging Channel to communicate base-station specific and system-wide information to mobile station.

Overload Class The means used to control system access by mobile stations, typically in emergency or other overloaded conditions. Mobile Stations are assigned one (or more) of sixteen overload classes. Access to the CDMA system can then be controlled on a per class basis by persistence values transmitted by the base station.

Overload Control A means to restrict reverse analog control channel accesses by mobile stations. Mobile stations are assigned one (or more) of sixteen control levels. Access is selectively restricted by a base station setting one or more OLC bits in the Overload Control Global Action Message.

P P/N Part Number

P/O Part Of

PA Power Amplifier

PABX (PBX) A Private Automatic Branch eXchange/telephone exchange linked to the PSTN. It handles calls automatically i.e., unattended. Normally a manual, user-owned exchange.

PAC Primary Access Framer/Controller -ACG/NIC Board

Packet A collection of bits, including the address, data and control, that are switched and transmitted together. The terms frame and packet are often used synonymously.

Packet Data Packet Data provides a means for end-to-end wireless data communication. By attaching a packet data-capable iDEN radio (MS) to a terminal, data packets can be transmitted and received by the terminal.

Packet Duplicator A rack-mounted unit that contains various assemblies which together provide the packet duplication function. The APD consists of the following main assemblies: MTX Board (single-board computer), Four HSSI I/O Boards, APD Power Supply, and LED Board containing front panel indicators, switches, and a connector.

Packet Switching A method of switching data in a network.

PacTel Pacific Telesis

PAD Packet Assembler/Dis-Assembler. (On OMC Packet Switch).

Paging The process whereby the system locates a mobile down to the cell site or the process of sending alpha-numeric data from the SMSC to a MS. The act of seeking a mobile station in order to deliver an incoming call.

paging area Contiguous radio coverage area comprising one or more cells which defines the search area the associated RF network will use


in a normal outbound message delivery attempt. Paging areas have a one-to-one association with location areas. Normally, a paging area includes all the cells of its associated location area plus the ring of neighbor cells which are immediately adjacent to it.

Paging Channel A forward communication channel used by a base station to communication to a mobile station when it is not assigned to a traffic channel.

PAL Programmable Array Logic

PAMR Public Access Mobile Radio

Part 68 Defined as a section of the FCC Rules and Regulations Volume 10. Regulations established by the FCC for interconnectivity of telecommunications equipment to the public network.

PBX See Private Branch Exchange.

PC See Physical Channel.

PC Personal Computer

PC See Point Code.

PC Private Call

PCC Power Control Constant

PCCA Portable Computer and Communications Association

PCCH See Primary Control Channel.

PCH Packet Channel

PCHT See Private Call Hang Timer.

PCI Peripheral Component Interface or Peripheral Component Interconnect

PCM See Pulse Code Modulation.

PCMCIA Personal Computer Memory Card International Association

PCN See Personal Communication Network.

PCP Private Carrier Paging

PCP Power Conversion Products, Inc.

PCR Peak Cell Rate

PCS See Personal Communication Services or Personal Communication System.

PCS Port Concentrator Shelf

PD See Protocol Discriminator.

PD See Packet Duplicator.

PD See Packet Data.

PDA Personal Data or Digital Assistant

PD-AFUN Packet Data Access Function

PDC Power Distribution Center

PDF Portable Document Format

PDH Plesiochronous Digital Hierarchy

PDN Packet Data Network

PDOP Position Dilution of Precision

PDP Product Development Plan or Packet Data Provisioning

PEC See Product Engineering Code.

PEM Power Entry Module

PEM-BC Power Entry Module Back Card

Permanent Virtual Circuit A PVC is a permanent virtual circuit in a frame relay network such as the MPS. For each port there is provisioned a list of DLCIs that that port can communicate with. This list is provisioned as part of setting up the system. Associated with each DLCI on each list is the port to which a message coming in on that port will be sent if it has that destination DLCI.

Personal Communication Network Mobile telephony system concept initiated by the British Department of Trade and Industry to encourage competition with existing mobile and landline service providers. PCN is currently defined as Global System for Mobile Communications (GSM) at 1800 megahertz (MHz) and is referred to by the ETSI SMG body as DCS 1800 (Digital Cellular System at 1800 MHz).

Personal Communication Services or Personal Communication System Emerging standards of wireless communications that provide personalized services as selected by the


individual; use radio signals as the access point to the network; the wireless network is then tied back into the public switched network for call routing.

PET PCS 1900 Enhanced Trunk

PF Port Format

pF picoFarad

PFTP Proprietary File Transfer Protocol

Physical Channel A physical RF channel is the frequency.

PIC Personal Information Connection

PID Process ID

Pilot Channel An unmodulated, direct-sequence spread spectrum signal transmitted continuously by each CDMA base station. The Pilot Channel allows a mobile station to acquire the timing of the Forward CDMA Channel, provides a phase reference for coherent demodulation, and provides a means for signal strength comparisons between base stations for determining what to handoff.

Pilot Strength The ratio of received pilot energy to overall received energy. See also Ec/Io.

PIM Peripheral Modules

PIN Personal Identification Number

Plain Old Telephone Service Standard voice or analog data modem service delivered over a pair or copper wires.

PLCP Physical layer convergence procedure

PLL Phase Locked Loop

PLMN See Public Land Mobile Network.

PLP Packet Level Protocol

PM Performance Maintenance

PM Pool Manager

PM Performance Management

PMA Prompt Maintenance Alarm

PMC PCI Mezzanine Card

PMR Private Mobile Radio

PN Public Notice

PN Sequence Pseudo random noise sequence. A periodic binary sequence approximating, in some sense, a Bernoulli (coin tossing) process with probable outcomes.

PNNI Private Network-Network Interface

POET Productive Office Enabling Tool.

Point Code Code identifies the address of a signaling point.

Point of Presence Defined as the point at which the public network will appear in a building or geographic area.

Point to Point Propagation Model A propagation model in which median transmission loss calculations are based on specific characteristics and terrain profile of the path along the great circle between the transmitter and the receiver.

POP Performance Oriented Practices

POP See Point of Presence.

Posts, Telegraph, and Telephone The organization, usually a governmental department, which acts as its nation's common carrier.

POTS Standard voice or analog data (modem )service delivered over a pair of copper wires

POTS See Plain Old Telephone Service.

Power Control Bit A bit sent in every 1.25 ms interval on the Forward Traffic Channel to signal the mobile station to increase or decrease its transmit power.

Power Control Group A 1.25 ms interval on the Forward Traffic Channel and the Reverse Traffic Control. See also the Power Control Bit.

Power-Down Registration An autonomous registration method in which the mobile station registers on power-down.

Power-Up Registration An autonomous registration method in which the mobile station registers on power-up.


PP The FCC's Office of Plans and Policy.

PP Peripheral Processor

PPM Principal Period of Maintenance

ppm Parts per Million

PPP Point To Point Protocol

PPS Pulse Per Second

PR Patch Release

PRI See Primary Rate Interface.

Primary Control Channel The PCCH is a multiple-access channel used for layer 3 control signaling between the FNE and the MSs. Each cell has one PCCH.

Primary Rate Interface Twenty-three 64 Kbps B channels & one 64 Kbps D channel.

Privacy Protection of traffic by means of encryption or other means specifically applied for that purpose.

Private Branch Exchange Telephone switch located on the subscriber premises and used to connect private and public telephone networks.

Private Call A feature of dispatch similar to a Group Call but the initiator specifies one specific MS. Only those two MSs are involved in the call. No one else can hear either side of the conversation. Only one user can talk at a time. The originator selects the target by entering the target's Private ID.

Private Call Hang Timer Private Call Hang Timer is the maximum amount of time to wait for a valid Private Call Update message to be received by the DAP after the voice channel involved in the private call has been opened (i.e. set-up as a temporary control channel). If no update message is received in this amount of time, the private call is terminated.

Product Engineering Code Eight-digit alphanumeric code that identifies a Northern Telecom hardware or software product.

Product Support Engineer The team responsible for handling second-level on-call field issues involving hardware and/or software failures for the dispatch subsystem.

PROM Programmable Read Only Memory

PROTEL Procedure Oriented Type Enforcing Language

Protocol Discriminator Used in processing to remove lower-layer signaling information.

Provisioning It is the process by which a requested service is designed and implemented.

PRS Primary Reference Source

PS Power Supply

PS Packet Switch

PS Program Store

PSA Provisioning Session Administrator

PSE See Product Support Engineer.

PSS Pilot Subchannel Symbol conveys no information.

PSTN See Public Switched Telephone Network.

PSU Power Supply Unit

PTE Packet Transfer Engine

PTS Primary Time Saver

PTT See Posts, Telegraph, and Telephone.

PTT See Push To Talk.

PTT-ID Push To Talk Identification. During all Private Calls and during Group calls when so provisioned the Private ID of the talker is displayed on the MS.

PUA Provisioning User Account.

PUADMIN Provisioning User Account ADMINistrator.

Public Land Mobile Network Public Land Mobile Network specified by the first five characters of an IMSI; includes the MCC and NDC . For example in the IMSI 316010000193012 the MCC is 316 followed by the NDC 01. Together they make up the PLMN 31601.

Public Switched Telephone Network Worldwide voice telephone network accessible to all those with telephones and access privileges


Pulse Code Modulation Phone company digital coding of an analog voice signal.

Push To Talk Refers to the button used to initiate dispatch services (either on a potato mic. or a handset). PTT also refers to the action of pushing that button. See key.

PVC See Permanent Virtual Circuit.

PVC Polyvinyl Chloride

pwr power

Q QAM See Quadrature Amplitude Modulation.

QFD Quality Function Deployment

QoS Quality of Service

QRSS Quasi Random Signal Sequence

Qty Quantity

Quad BR Refers to the 800 MHz and 900 MHz multi-carrier BRs.

Quadrature Amplitude Modulation A modulation scheme which comprises two AM signals sent in quadrature - e.g., one AM symbol modulating a cosine function, a second symbol modulating a sine function. This is mathematically equivalent to modulation of a complex symbol.

QUICC Quad Integrated Communication Controller

R R&O Report & Order

R1 Receiver #1

R10000 CPU CRU (Also called R10K) A CPU CRU containing two MIPS R10000 RISC processors configured for 2-way SMP operation. In 2-way SMP operation, the two processors run independent instruction streams. R10000 processor errors are detected in duplex operation

by comparing the outputs from the two-processor slices. The R10000 CPU CRU is paired with a CPU jumper CRU for 2-way SMP operation.

R2 Receiver #2

R3 Receiver #3

R4400 CPU CRU A CPU CRU containing two MIPS R4400 RISC processors that run identical instruction streams in lockstep. Two to four R4400 CPU CRUs can be connected together via their SCBs to form an SMP processor slice. Except for memory, all components in the CRU are duplicated so their operation can be compared within the CRU. Memory is protected with ECC code. The CRU self checks (stops operation immediately) when an error is detected to prevent propagation of the error to other areas of the system. In a duplex system, the other processor slice continues to operate to keep the system running.

RAB See Random Access Burst.

RACH See Random Access Channel (or Random Access Control Channel).

Radio Channel ID Before SR4.3 each time slot in each BR was configured (at the BSC and the EBTS) with one subrated channel on the EBTS's span line. An Interconnect call's RCI implicitly defines which BR, Time Slot, and subrate channel that call's voice uses. If a BR and time slot have a Dispatch call then the associated RCI goes unused (wasted). See SCI.

Radio Frequency The electromagnetic energy wavelengths usually between 500 kHz and 300 GHz, the audio and light range frequencies

Radio Resource State Machine Telephone The task in the ACG that manages Interconnect telephone calls. The RRT is the state machine in the ACG that handles the call processing of the telephone calls, transmission of data and dispatch registration. The RRT keeps track of the state of each interconnect call along with the information about the call. This task interfaces with the CRM to request logical channel resources and return logical channel resources. The CRM will queue interconnect requests for


traffic channel resources. The RRT communicates with the BRC through the RSS_Abis task.

Radio Service Software Software run on a personal computer which connects to an MS. RSS is used by Service Providers to flash SW into the MS, to bandmap the MS for the carriers it is supposed to use, and to govern the ergonomic features of which the MS is capable. Some flavors of RSS SW (not generally available in the lab) tell the MS what its IMEI is and what tuning constants (determined at manufacture) to use.

Radio Sub System Handover Task The task in the ACG that handles handover reports from the BR. This task receives channel quality information from the BRCs and saves information regarding which channel is the best quality, so that CRM can select the best quality idle channel for each call, where applicable.The task in the ACG that handles handover reports from the BR. This task receives channel quality information from the BRCs and saves information regarding which channel is the best quality, so that CRM can select the best quality idle channel for each call, where applicable.

Radio subnetwork A wireless subnetwork. The set of cells (often encompassing multiple location areas) through which a mobile station, operating a single telecommunications service mode, may freely roam without the need to involve more than one VLR. The radio subnetwork includes the radio coverage area and associated infrastructure under the control of a single VLR entity. RF channel identifier — A number which defines a radio channel number according to a defined numbering plan. The channel identifier must specify the frequency band, the channel number within the band, the spacing between adjacent channels, and the transmit/receive offset.

Radio Subnetwork Point of Attachment An address which identifies a particular radio subnetwork server. An active mobile station is always dynamically associated with an RSPA which identifies, from the fixed network’s perspective, where that MS may be found.

Radio Sub-System Abis The task in the ACG that makes the interface to the BRs for telephone GSM-like. This task translates BRC messages for telephone into GSM equivalent messages to maintain a standard interface to RRT between GSM and iDEN. RSS-Abis is also responsible for sending ACP outbound messages one at a time, waiting for a confirmation before sending another.

RAG Resource Allocation Group

RAI Remote Alarm Indication

RALP Radio Application Layer Protocol

RAM Random Access Memory

RAN Recorded Announcement

RAND Random Numbers uses for authentication..

Random Access Burst An inbound transmission in a Reserved Access Slot.

Random Access Channel (or Random Access Control Channel) It is an inbound-only channel. It is comprised of all the inbound slots of the PCCH; all of these slots are random access. It is random in the sense that it is not assigned to any particular entity's use. Any MS that wants to request service will simply start transmitting on the carrier and time slot and subslot assigned to the RACH; If another MS happens to transmit on the same RACH subslot they will mutually obliterate each other and will try again later. In order to make mutual obliteration less likely the inbound carrier and slot is divided into two subslots either one of which can be used for an RACH message. The MS will know that its RACH message got through because the EBTS will respond to the message. For example, when the MS sends a Group Call Request the EBTS will send a Call Proceeding message. If the MS needs a dedicated channel it will use the RACH to request a DCCH.

Random Access Protocol Random Access Protocol is the call control message protocol between the MS and the BR. It refers to the procedure in which an MS sends a message on the inbound CCCH on a time slot not


specifically reserved for that MS, i.e., a "random" CCCH slot. Such a message is in jeopardy of being obliterated by another MS using the RAP at the same time. This channel is called the RACH.

RAP See Random Access Protocol.

RBDS Remote BSS Diagnostic Subsystem

RC Recent Change

RCI See Radio Channel ID.

RCP Radio Control Protocol

RCV/RCVR Receiver

RDBMS Relational Database Management System

RED Random Early Detection

Ref Reference

Regional Network Code Regional Network Code is a globally unique system ID. When the MS does an IMEI registration the MS takes the first RNC broadcast in the Sys Info and stores it as the home RNC. For non-SR5 based radios, if MS sees broadcast RNC different from stored home RNC, then MS does not request Dispatch services. For SR-5 based radios when MS roams into a new RNC it will attempt registration renewal. As part of this it sends DLAI in which it was last registered. DAP sees that five byte DLAI is not one of its own and rejects registration renewal. When MS gets its registration renewan rejected it next attempts a dispatch registration which may get accepted with bits indicating Yes, you have PD services but No, you are not PD registered. MS knows that it wants to be PD registered but it is no so it does a PD registration (on the same DCCH, before it closes). In the future the name RNC will change to Urban ID.

Registration The process by which a mobile station makes its presence known to a base station to facilitate call delivery.

Registration Zone A collection of one or more base stations treated as a unit when determining whether a mobile station should perform zone-based registration.

Release A process that the mobile station and base station use to inform each other of call disconnects.

Remote Service Links Used for call management (MOBIS) and network management (SNMP). These links are from the BSC to the EBTS. Compare to OML.

Resources In iDEN the term resources usually refers to the RF Resources consumed for a call, i.e., the carrier and time slots used in the various Cells involved in the call.

Reverse CDMA Channel The CDMA Channel from the mobile station to the base station. From the base station's perspective, the Reverse CDMA Channel is the sum of all mobile station transmissions on a CDMA frequency assignment.

Reverse Traffic Channel A Reverse CDMA Channel used to transport user and signaling traffic from a single mobile station to one or more base stations.

RF See Radio Frequency.

RFC Request For Comments

RFC Radio Frequency Cabinet

RFCL Radio Frequency Convergence Layer

RFDS RF Diagnostic Subsystem or RF Distribution System

RFI Radio Frequency Interference

RFID Radio Frequency Identification

RFS RF System

RHC Regional Holding Company

RHOT See Radio Sub System HandOver Task.

RIP Routing Information Protocol

RISC Reduced Instruction Set Computer

RJ-11 Registered Jack Function 11 (2-wire dial tone on 4 pin telephone jack at the customer site).

RLAN Radio Local Area Network

RLP Radio Link Protocol (GSM)


RMA Return Material Authorization

RMS Root Mean Square

RNC See Regional Network Code. See also Urban ID.

RNE Remote Network Elements

RNO Real Network Operator

Roaming With Roaming capabilities, the iDEN system can immediately identify a user’s location in the network, allowing mobile and portable users to travel and receive calls anywhere in the network. (Other wireless technologies cannot identify a user’s location outside of the local network until the user makes a call from his new location, resulting in missed calls and incomplete communications.)

ROC See Router Controller.

ROM Read Only Memory

ROTL Remote Office Test Line

Route A name which comprises a set of instructions of how to reach an object.

Router Controller In the Tandem DAP, a CRU that houses a pair of first-level ServerNet SAN routers that provide CPU equalization links and connect CPUs to an SSC CRU and to ServerNet SAN expansion connections. The ROC also contains maintenance routers for SMB connections from the SSC to the CPUs.

RPM Revolutions Per Minute

RPS Repetitive Pattern Suppression: Mechanism employed by IGX to further increase bandwidth efficiency

RR Radio Resources

RRDT Radio Resource Dispatch Task is a task running in the ACG.

RRT See Radio Resource State Machine Telephone.

RS Record Status

RS232-C An EIA standard which is the most common way of linking data devices together. An interface for linking DCEs and DTES, it defines the electrical characteristics of the

signals from such devices. RS232 is suitable for both synchronous and asynchronous communications and specifies a 25-pin connector, traditionally the DB-25. 20 of the pins carry out routine system operation while the rest are reserved for modem testing or unallocated. For this reason it is never safe to assume that two RS232 devices will work together. Newer, more compact RS232 interfaces have nine pins only and an adapter card is needed. It is functionally similar to the ITU-TS's V.24 and V.28 standards. Recommended Standard 232 (computer serial interface, IEEE; usually written RS-232)

RSC Remote Switching Center

RSL Radio System Link

RSL See Remote Service Links.

RSO Remote Switching Office

RSPA See Radio Subnetwork Point of Attachment.

RSS See Radio Service Software.

RSS-ABIS See Radio Sub-System Abis.

RSSI Received Signal Strength Indication is measured in dBm. An MS becomes marginal when its RSSI falls below -95 dBm. A base Radio receiver can work with a weaker signal.

RSVP Resource Reservation Protocol

RTC Real Time Clock

RTM Requirements Trace Matrix

RTM Requirements and Traceability Management

RTN Return

RTP Routing Table Protocol

RTS Ready To Send. EIA/TIA-232 control signal that requests a data transmission on a communications line.

RTU Right To Use

RU Rack Units

Rx Receive


RXCDR Transcoder system remote to the BSC or Remote Transcoder

RXDSP Receive Digital Signal Processor

RXS-8 Sub-rack for Midi Node

S S/W Software

SA Software Architecture

SA See Service Area.

SA Software Architecture

SA System Analysis

SA Selective Availability

SABM Set Asynchronous Balanced Mode

SABME Set Asynchronous Balance Mode Extended

SAC Subscriber Access Control

SAC See Special Access Code.

SAD System Architecture Description

SAI See Service Area Identifier.

SAID See System Alarm and ID.

SAP See Service Access Point.

SAPI Service Access Point Identifier

SAR Segmentation and Reassembly

SAR PDU Segmentation and Reassembly Protocol Data Unit

S-ARFUN Surveillance Audio Routing Function

SAT Super Audio Tones

SBC Single Board Computer

SBN Side Band Noise

SC See Steal Code.

SCCH See Secondary Control Channel.

SCCP Signal Connection Control Part.

SCE Science Creation Environment

S-CFUN Surveillance Collection Function

SCI See Subrate Channel ID.

SCM System clock module

SCON VME System Controller

SCP Service Control Point

SCR Sustainable cell rate

SCRF Stand-alone Control and RF Cabinet (configuration)

SCSA See Signaling Computing System Architecture.

SCSI See Small Computer System Interface.

SDB See Slot Descriptor Block.

SDC See Service Domain Code.

SDCCH Standalone Dedicated Control Channel

S-DFUN Surveillance Delivery Function

SDH Sync Digital Hierarchy

SDL Specification and Design Language

SDLC Synchronous Data Link Control

SDM-FT Supernode Data Manager - Fault Tolerant

SDN Secondary Directory Number

SDRAM Static Dynamic Random Access Memory

sec second

Secondary Control Channel The SCCH is similar to the PCCH except that it does not contain a BCCH. There may be zero to four SCCHs in a cell as required to provide extra control channel bandwidth for the cell. It has been devised to lighten the traffic on its associated PCCH. This allows one cell to have several channels for paging, paging responses, and service requests. An SCCH has a CCCH and a RACH but no BCCH. If an MS is camped on a SCCH it will monitor the BCCH of the PCCH during slot one and monitor the CCCH of the SCCH on slot four. So far all SCCHs are on slot four. In a cell with more than one SCCH


the MS and the FNE determine which SCCH to use by knowing the seed. An SCCH is composed of only a CCCH and a RACH.

sector Normally one angular segment of the coverage area of a cell, served by one base station. Also used to denote any non-traditional partitioning of the service area, such as one strand of a cable-based delivery system.

Seed In a fleet which is provisioned to use SCCH, the MS and the FNE know which SCCH to use (among possibly several within a cell) by using the Seed (provisioned in the ADC on a per-fleet basis). The Seed may have a value within the range of 1 to 60. The SCCH to be used is determined by the Fleet's Seed modulo the number of SCCHs in the cell. Note that the MS is told the Seed as part of registration which takes place on the PCCH.

SEH Stackable Ethernet Hub

Send Parameters Operation is invoke by the VLR when it requires subscriber or authentication parameters from the DMS-HLR.

Serial Line Interface Protocol An internet protocol is used to run IP over serial lines such as telephone circuits.

Server A radio subnetwork point of attachment (RSPA) - A facility which provides telecommunications bearer service to a mobile station which is currently bound to it.

Service Access Point An SAP is the point at which the data link layer (e.g., LAPD) provides services to layer 3. Associated with each data link layer SAP is one or more link connection endpoints. A data link connection endpoint is identified by a data link connection endpoint identifier as seen from layer 3 and by a data Link Connection Identifier (DLCI) as seen from the data link layer. .

Service Area The area in which your service provider has provisioned you to get dispatch services. The service provider creates Service Areas.

Service Area Identifier A one octet binary field which defines a dispatch service area in an

individual iDEN radio sub-network. Numbers range from decimal 1 to decimal 99.

Service Domain A set of the mobile station population which obtains radio telecommunications services from a single service provider and is associated with one (and only one) HLR for each telecommunications service. A mobile station’s IMSI name includes its service domain code (SDC) which is analogous to a central office code in a North American PSTN directory number. For any telecommunications service, a single HLR can support multiple SDCs, but all mobile stations using a specific SDC code must have their home registration on the same HLR.

Service Domain Code Usually four to six BCD digits in the IMSI assigned by Motorola.

Service Level Agreement. An agreement establishes between a user and service provider, defining the nature of the service.

Service Option A specific type of user traffic supported by a cellular system. The major service options are speech codecs, and various types of data. Service options may be negotiated between base and mobile stations during call setup.

Service Processor A processor that is dedicated to service and control functions, such as providing system boot services, providing the system console interface, monitoring the state of system components, and providing diagnostic communications. The SP controls the SMB.

Service Provider Code A two octet hexadecimal field which identifies service providers that operate in more than one IDEN regional network.

Serving MSC The MSC that currently has the mobile station obtaining service at one of its cell sites within its coverage area.

SF Superframe

SGC Software Gain Control

Shared Secret Data A bit pattern stored in the mobile station and known by the base station. SSD is used to support the authentication


procedures and voice privacy. Shared Secret Data is maintained during power off.

Short Message Information that can be conveyed by means of the Short Message Service

Short Message Service The means of transferring messages in a PLMN. Messages are transferred between Mobile Stations and a short message entity in a service center.

Short Message Service Center Entity in a PLMN that acts as a storage and forwarding center for short messages.

SI System Index

SICH Slot Information Channel

SID See System Identification.

Signal Quality Estimate A ratio of C/I+N; normally indicated in dB units.

Signaling The information exchanged between the mobile station and the network, or within the network, for the purposes of service provision (e.g., connection establishment).

Signaling Computing System Architecture SCSA is a comprehensive architecture that describes how both hardware and software building blocks work together. It has now been absorbed by S.100, but the following words still apply: it focuses on "Signal Computing" devices, which refer to any devices that are required to transmit information over the telephone network. Information can be transmitted via data modems, fax, voice or even video. SCSA defines how all these devices work together. Signal computing systems combine three major elements for call processing. Network interfaces provide for the input and output of signals transmitted and switches in telecommunications networks. Digital signal processors and software algorithms transform the signals through low-level manipulation. Application programs provide computer control of the processed signals to bring value to the end user.

Signaling Processor DMS circuit card that provides the interface between the Master

Processor (MP) and the control circuits of a hardware module.

Signaling System Seven or CCIT-7 A worldwide Telco standard signaling scheme defined by the ANSI and CCITT. CCITT SS7 is also called C7. ANSI SS7 is called SS7.

Signaling Transfer Point Node in a CCS7 signaling network that routes messages between nodes; transfer messages between incoming and outgoing signaling links, but do not originate or terminate any messages except for network management information.

SIM Serial Interface Module

SIM Subscriber Identity Module - smart card installed or inserted into a mobile telephone

SIMM See Single Inline Memory Module.

Simple Network Management Protocol In the world at large a popular protocol for managing network elements such as routers and bridges over the network they are switching. In iDEN this protocol is used by the OMC to download, control, and monitor its network elements.

Simplex A communications system or link which can only carry a signal in one direction. Example: a public address system. Compare to Duplex and Half Duplex.

SINAD Signal Plus Noise Plus Distortion to Noise Plus Distortion Radio

Single Inline Memory Module A form of chip packaging in which leads (pins) are arranged in a single row protruding from the chip.

SIP Single Inline Module w/Pins

SIP SMDS Interface Protocol

SIP Simple Internet Protocol

SIP See Slot Information Procedure.

SISTG System Integration/System Test Group.

SITG System Integrated Test Group

SIX Serial Interface Extender


SLA See Service Level Agreement.

SLC See Sucscriber Line Charge.

SLC Speech Link Connecting Frame (No longer produced)

SLC Subscriber Line Change

SLF Shelf

SLIP See Serial Line Interface Protocol.

SLM Session Link Management

SLM See System Load Module.

Slot Descriptor Block An element of the Outbound Frame which provides information about the assignment and use of the associated slot. An element of the Outbound Frame which provides information about the assignment and use of the associated slot.

Slot Information Procedure An Outbound-only, point-to-multipoint, unreliable, connectionless packet data protocol used for slot allocation control. SIP operates on the Slot Information Channel. Note that the reference to "packet data" above does not refer to the iDEN Packet Data feature but rather to a generic packet of data containing, in this case, slot descriptor blocks.

Slotted Mode An operation mode of the mobile station in which the mobile station monitors only selected times slots on the Paging Channel when in the Mobile Station Idle State. The primary purpose of slotted mode is power conservation.

SM Switching Module

SM See Short Message.

Small Computer System Interface A disk drive control technology

SMART Systems Management Analysis, Research and Test

SMDS See Switched Multi-megabit Data Service.

SMF System Management Functions

SMF Single-mode fiber

SMFA Specific Management Functional Area

SMI Switch Matrix Interface

SMI See Structure of the Management Information.

SMMP Subnetwork Mobility Management Protocol

SMMT Mobile Terminated Short Message Service

SMP Switch Matrix Processor

SMP See Software Maintenance Program.

SMP Symmetric Multi-Processing

SMP SCSA Message Protocol

SMP Simple Management Protocol

SMR See Specialized (or Shared) Mobile Radio.

SMS See Short Message Service.

SMS-SC See Short Message Service Center.

SMT See System Maintenance Terminal.

SMT Surface Monitoring Technology

SMT See Station Management.

SN SuperNode: A DMS switch

SNA Systems Network Architecture

SNA/SDLC Systems Network Architecture/Synchronous Data Link Control

SNMP See Simple Network Management Protocol.

SNMP Signaling Network Management Protocol

SNPA See Subnetwork Point of Attachment

SNTP Simple Network Time Protocol

SOA Second Office Application

SOC System Optionality Control

Soft Handoff A handoff occurring while the mobile station is in the Mobile Station Control on the Traffic Channel State. This handoff is characterized by commencing communications with a new base station on the same CDMA


frequency assignment before terminating communications with the old base station.

Software Maintenance Program Software Maintenance Services provided by Motorola to Customer during the Initial Warranty Period.

SONET See Synchronous Optical Network.

SOW Statement Of Work

SP Service Processor: A processor that is dedicated to service and control functions, such as providing system boot services, providing the system console interface, monitoring the state of system components, and providing diagnostic communications. The SP controls the SMB.

SP See Special Product (Software/Harware)

SP See Signaling Processor.

SP See Special Product (Motorola).

SP See Send Parameters.

SPA Surveillance Provisioning Application

Span A PCM bit stream formatted for transmission over telephone facilities. Usually carries DS1 or DS3. It refers to that portion of a high speed digital system that connects a CO (Central Office) to CO or terminal office to terminal office. <Also called a T-Span>

SPC Statistical Process Controls

SPC Signaling Point Code

SPC A two octet hexadecimal field which identifies service providers that operate in more than one IDEN regional network.

Special Access Code There are four remaining: 200, 300, 400 & 500.

Special Product (Software/Hardware) iDEN Software Feature Classification. Features developed for Customer which contain Customer unique features and/or functionality. Additional fee(s) required.

Specialized (or Shared) Mobile Radio In a shared system a service provider operates a stationary transceiver and sells air time to customers with fleets See ESMR and mobile radio.

SPF Single Point of Failure

S-PFUN Surveillance Provisioning Function

SPI Security Parameter Index

SPI Serial Peripheral Interface

SPX Sequenced Packet Exchange

SQA System Quality Assurance

SQE See Signal Quality Estimate.

SQE Signal Quality Error

SQL Structured Query Language

SR Scan Radio

SR System Release

SRAM Static Random Access Memory

SRC Sub-rate Controller

SRC Strategic Review Committee

SRD System Requirements Document

SRES Signed Response

SRI Site Reference ISA (see TFR)

SRIB SMART Radio Interface Box

SRM Sub-Rate Multiplexing

SRM Service Resource Module

SRP Segmentation Reservation Protocol

SRRC Single Rack, Redundant Controller (configuration)

SS Surge Suppressor

SS7 See Signaling System Seven or CCIT-7.

SSC System Status Control

SSC System Support Center

SSD See Shared Secret Data.

SSD System Status Display (formerly Site Status Display)

SSD Special Services Division

SSI Synchronous Serial Interface

SSP Service Switching Point (an intelligent SS-7 network element)


ST Status

stack 1. In software, segment of the address space into which automatic data and subroutine linkage information are allocated in last-in-first-out fashion; the stack occupies the largest data addresses and grows downward toward static data. 2. In hardware, this term is synonymous with the term cabinet, used to define the Tandem DAP enclosures. A DAP consists of two cabinets; the main stack and the expansion stack. The Non Stop-UX operating system, including the maintenance and diagnostics software (MDS), uses the term stack instead of cabinet.

standby In a hot-standby system, this device is off-line, but powered-up and ready to assume control of tasks in case of a switch.

STAT Status

STAT Statistic

static RAM A volatile chip providing Random Access (read/write) Memory.

Station Management The part of FDDI that manages station in a ring

Std Standard

Steal Code A Scheme used by the ACCH to steal bits from the TCH.

STG System Timing Generator

STM Synchronous Transport Module

STM-1-E Electrical STM-1 interface for GMU

STM-1-LH STM-1 interface for GMU

STM-1-SH STM-1 interface for GMU

STP Subrated T1 PCI card

STP Shielded Twisted Pair

STP See Signaling Transfer Point.

Structure of the Management Information The set of rules and formats for defining, accessing and adding objects to the internet MIB

SU See Subscriber Unit.

subnetwork A representation within the OSI model of a real network, such as a carrier

network, a private network, or a local area network. A functional abstraction of a set of one or more intermediate open systems which provide relaying and through which end systems may establish network connection.

Subnetwork Point of Attachment The point of connection between a subnetwork and a connected end system or other entity.

Subrate In iDEN, for Interconnect voice, a channel of a span line is divided into four sub-channels called subrate channels. Each subrate channel is 64kbit/4 = 16kbit per second. In the eight bit byte for each channel for each frame the low order two bits are used for one subrate channel, the next two bits make up the next and so on. For example, on a T1 each of twenty four channels send one byte every frame (8000 frames per second for a total of 64kbit per second). Each of those bytes is divided into four groups of two bits. Each of these four groups constitute a subrated channel with a bit rate of 16 kbit per second. These channels are called RCIs or SCIs.

Subrate Channel ID It replaces the term RCI as of iDEN SR4.3. The difference is that SCI implies subrate trunking. Put another way, instead of referring to a certain BR, there is a pool of SCIs instead that can simply be assigned to a call regardless of BR and timeslot. There used to be one RCI for each time slot on each BR. Now there are only as many SCIs as needed to handle the number of Interconnect calls that an EBTS can handle at one time. This is a more efficient use of subrate channels.

Subscriber Identity Module Smart card installed or inserted into a mobile telephone.

Subscriber Unit The radio equipment a subscriber uses to access the iDEN system. Each SU uses a unique number that identifies membership in a predefined fleet and TalkGroup, its provisioned call features and its service calling area. See also mobile station.

Sucscriber Line Charge A charge added on the monthly bill of a phone subscriber in the United States.


SV+ Cisco’s Strataview Plus Network Management Platform

SVC Switched Virtual Circuit (as opposed to a PVC)

SWER SoftWare ERror

Switched Multi-megabit Data Service A connectionless high-speed data transmission service intended for application on a Metropolitan Area Network (MAN) environment.

SXCDR Single mode Transcoder card

SYN-34-E Electrical synchronous 24 Mbit/s interface for GMU

Synchronous Optical Network Set of standards that defines various aspects of transporting and managing digital traffic over fiber optic facilities in the public network. SONET was developed to address the need for transmission speeds above DS3 (44.736 Mbps). It uses the STS1/OC-1 (51.84 Mbps) signal format as a basic building block. Higher-rate signals are multiples of the STS1 rate..

SYSGEN System Generation

System Alarm and ID An Integrity S4000/5000 system FRU that provides the stack ID switches, alarm connector, and alarm indicators with associated alarm clear push-buttons.

System Identification A number uniquely identifying a cellular system.

System Load Module Mass storage system in a DMS SuperNode processor that stores office images. New loads or stored images can be booted into Computing Module (CM) from the SLM.

System Maintenance Terminal SMT uses for retrieving accounting data and for general administrative activities.

T T1 A method developed in the 1950s for carrying 24 full-duplex telephone circuits on two twisted pair. The audio signal is cut off at 3400 Hz, sampled 8000 times per second (i.e., every 125 microseconds) compressed according to mu law, digitized into one byte and sent using AMI. This signal will travel about a mile before it needs to be regenerated. The European E1 line is similar but has 30 channels and A-law compression. In iDEN T1 or E1 lines connect the MSO to each cell site (EBTS). High traffic sites have an additional, secondary line to each ACG.

T43 Type 43 Interconnect Board

TA See Time Advance.

TACS Total Area Communications System

Tag Distribution Protocol Operates across Layer 2 and Layer 3 network devices and establishes ATM VC connections along forwarding paths

Tag Distribution Protocol Operates across Layer 2 and Layer 3 network devices and establishes ATM VC connections along forwarding paths.

Talk Group Within a fleet there can be as many as 255 talk groups. Each individual MS can be provisioned with a list of any combination of talk groups in its fleet. Each user can then register his MS in any talk group on the list associated with his MS. That will enable him to originate and participate in calls for that talk group. With the MSTG feature an MS can participate in (but not originate) calls on three additional talk groups. Talking frog.

Tandem Dispatch Application Processor A higher performance platform for DAP, starting in SR6. Replaces IMP platform. Tandem is the manufacturer of the platform. It can handle 90,000 MSs and will be upgradeable to a newer version which will handle 180,000 MSs.

TB Terminal Board


TBUS Time Division Multiplex Serial BUS

TC Terminal Controller

TCAP See Transaction Capabilities Application Part.

TCCH See Temporary Control Channel.

TCH See Traffic Channel.

TCMS Trunkating Code Management System

TCOS Terminating Class of Service

TCP See Transmission Control Protocol.

TCP See Transmission Control Protocol.

TCP/IP Transfer Control Protocol/ Internet Protocol

TCP/IP See Transmission Control Protocol/Internet Protocol.

TDAP See Tandem Dispatch Application Processor.

T-DAP See TDAP.

TDM Time Division Multiplex: Multiplexer which apportions the time available on its Composite link between its channels, interleaving data from successive channels. The method divides up digital channels to make maximum use of their bandwidth, by taking input from each source in turn. TDMs use one of two methods to achieve this, bit interleaving for synchronous protocols and character interleaving for asynchronous protocols. Traditional digital multiplexing where a signal occupies a fixed, repetitive time slot within a higher-rate signal. Allows six separate information channels on one 25 kHz RF channel.

TDMA See Time Division Multiple Access.

TDP See Tag Distribution Protocol.

TDU Total Defects Per Unit

Technical Requirements Document A structured and detailed description of a request for development. The TRD attempts to document all requirements that are required to address the needs of the customer for the given problem or feature defined within. These

requirements give development the direction to architect and implement the feature.

Telco Telephone Company

Telephone Interconnect Refers to iDEN connection to the PSTN. Also known as "Interconnect" for short.

Temporary Control Channel The TCCH is a multiple access channel used for layer 3 control signaling. A TCCH is temporarily allocated to provide a means for inbound random access on a channel which is normally reserved access.

Temporary Mobile Station Identifier Temporary Mobile Station Identifier; usually four octets. For Interconnect call processing a temporary ID is used to identify a specific MS to the system. This minimizes broadcasting the IMSI over the air. The IMSI may be broadcast when the MS initially roams onto a system and registers. The system assigns a TMSI for the MS immediately that is used to identify the MS until it roams out of the system. A new TMSI is assigned to the MS each time it changes its location area with the MSC-VLR.

TERM Terminator

Terminal Identification Two-part code consisting of the node and terminal number to itemize a specific piece of equipment used for messaging within the DMS family of switches.

TESN Temporary Equipment Serial Number

Test Mobile A iDEN MS (Mobile Station) equipped with special software.

TFR See Time Frequency Reference.

TFTP Trivial File Transfer Protocol

TI See Terminal Identification.

TIA Telecommunications Industry Association

TIB Technical Information Bulletin

Time Advance First 4 bits in the fourth octet in the Reserved Slot Descriptor Blocks. The value of the field is from 0-15 and allows the FNE to remove propagation delay from the inbound bursts.


Time Division Multiple Access TDMA describes a digital transmission standard using a time slotting process which allows multiple users to share the same Communications Path. Transmissions are limited to a specified time slot. Divides a single radio channel into multiple time slots. Each slot handles one communication path, allowing multiple users to use the same RF channel simultaneously.

Time Division Multiplex Multiplexer which apportions the time available on its Composite link between its channels, interleaving data from successive channels. The method divides up digital channels to make maximum use of their bandwidth, by taking input from each source in turn. TDMs use one of two methods to achieve this, bit interleaving for synchronous protocols and character interleaving for asynchronous protocols. Traditional digital multiplexing where a signal occupies a fixed, repetitive time slot within a higher-rate signal. Allows six separate information channels on one 25 kHz RF channel.

Time Frequency Reference Time Frequency Reference is a component of an EBTS which receives signals from GPS satellites and provides the site with the exact time and with a frequency reference for its transmitters.

Timer-Based Registration A registration method in which the mobile station registers whenever a counter reaches a predetermined value. The counter is incremented an average of once per 80 ms period.

TISIC TDMA Infrastructure Support IC

Title Translation The process of converting information which does not explicitly support routing in the signaling network. Examples of such information would include customer dialed digits, directory ISDN/PSTN numbers, or IMSI. In SS7 networks, such information must be converted into destination addresses comprising a destination point code and a sub-system number. In some instances, an SCCP title translation function is supported by the local SS7 network. In other instances, the iDEN network will be responsible for the title translation process. Where non-SS7 networks

are used (e.g., X.25 and coverage plus), the title translation process must be supported by the iDEN infrastructure.

TL Telephone Line

TM See Test Mobile.

TM Traffic management

TMN Telecommunication Management Network

TMSI See Temporary Mobile Station Identifier.

TOPS Traffic Operator Position System

TPR Teleprinter

TR Technical reference

Traffic Channel Carries encoded speech or user data in a PLMN

Traffic Channel A communication path between a mobile station and a base station used for user and signaling traffic. The term Traffic Channel implies a Forward Traffic Channel and Reverse Traffic Channel pair. See also Forward Traffic Channel and Reverse Traffic Channel.

Traffic Channel Carries encoded speech or user data in a PLMN

Transaction Capabilities Application Part Provides a common protocol for remote operations across the CCS7 network; protocol consists of message formatting, content rules, and exchange procedures.

Transcoder Used in Interconnect; converts 64 kbps PCM (mu-law or A-law) to VSELP voice and vice versa. The Dual Mode XCDR board is a hardware device that performs the VSELP to PCM as well as PCM to VSELP voice conversions that are required in order for the iDEN system to interconnect to the MSC and PSTN networks.

Transcoder A device that transforms signals from one type of digital representation to another.

Transmission Defined as an iDEN data communication service which allows faxes and


file transfers to be sent via laptop connector via an RS232 port to the iDEN phone.

Transmission Control Protocol The standard transport level protocol that provides the full duplex, stream service on which many application protocols depend. TCP allows a process or one machine to send a stream of data to a process on another. Software implementing TCP usually resides in the operating system and uses the IP to transmit information across the network.

Transmission Control Protocol/Internet Protocol The suite of protocols developed and used by DAR PA and the US DOD. They build up to Layer Four of the ISO OSI model, but there is no direct correspondence layer for layer. Three main protocols sit above TCP/IP: Telnet, FTP and SMTP.

TRAVER Translations Verification

TRD Technical Requirements Document

TRK See Trunk.

TRT Technical response team

TRU Traffic Usage

trunk Defined as a transmission channel connecting two switching machines not dedicated to a single user. Maybe 1 or 2 way.

Trunk Interconnection of telephone switching centers that contain numerous shared telephone circuits

Trunking In the telephone industry there is a line from each phone to the switching office and trunks between switching offices. The line is used only for calls involving that particular phone but a switching office can put any phone's call on a trunk. Thus the term trunking has come to mean any channel that can be assigned to calls as they come up. In analog land mobile dispatch systems a call is assigned to a particular frequency and this is referred to as analog trunking. In iDEN (as of SR4.3) there is trunking of interconnect calls on subrated channels between the EBTS and the BSC.

TSC iDEN Technical Support Center

TSG Timing Signal Generator

TSI Time Slot Interchange or Remote ID

TSI Time Slot Interface

TTA Tower-Top Amplifier

TTL Transistor - Transistor Logic

TTY Teletype

Tx Transmit

TXC Transmit Carrier

TXD Transmit Data

TXDSP Transmit Digital Signal Processor

Txlin Tranlin IC

typ Typical

U U_D_Idl Unlock-Disable-Idle

U_E_A Unlock-Enable-Active

U_E_Idl Unlock-Enable-Idle

U_E_Imp Unlock-Enable-Impaired

UA Unnumbered Acknowledgement

UANC Urban Area Network Code

UBR Unassigned Bit Rate

UC Use Case

UDI Unlocked, Disabled, Idle

UDP See User Datagram Protocol.

UDP/IP User Datagram Protocol/Internet Protocol

UDT Unlocked, Disabled, Idle

UEA Unlocked, Enabled, Active

UEI Unlocked, Enabled, Idle

UFL Update Fleet Location

UFM Universal Frame Relay Module

UFMI See Universal Fleet Member ID.

UHSO Ultra High Stability Oscillator


UI User Interface

UL See Update Location.

UL Underwriters Laboratories

UMTS Universal Mobile Telecommunications Systems

UNI User – Network Interface

Universal Fleet Member Identifier A UFMI is five bytes in length. UFMIs are used to uniquely identify each MS specifying an Urban, a fleet within that Urban, and an MS within that fleet.

Universal Mobile Telecommunications System Motorola NSS and United Kingdom-based GSM operator Vodafone Limited announced in April 1999 a collaborative agreement to foster the implementing of third generation mobile communications - the Universal Mobile Telecommunications System (UMTS). UMTS is expected to provide a rich technology foundation from which customized communications services and applications, such as multimedia and Internet access, can be delivered to wireless devices. These future services will be both simple and flexible to help meet the needs of individual users.

Universal Switching Module ATM service interface module based on Stratm technology.

Universal Tone Receiver DMS 32-channel tone receiver that detects a variety of tones, including Dual Tone Multifrequency for lines and multifrequency for trunks.

UP Unwired Planet

Update Location Operation invoked from the VLR to the DMS-HLR when the Mobile Station moves into a new VLR area or turns on the handset, or after a Reset.

UPS Uninterruptable Power Supply

Urban An NDAP cluster and the coverage area provided by the EBTSs which are connected to all the DAPs in the N-DAP cluster. Urban IDs increases the number of fleets available globally and provides a mechanism to establish fleet-to-fleet dispatch calls.

Urban ID Urban ID replaces RNC: Urban IDs are used only in the UFMI branches of the FMI Numbering Plan. Urban IDs belong to the Highest Tier of the UFMI Numbering Plan. Urban IDs are used to refer to the Urban ID entered by the operator at provisioning time or to the Urban ID which is sent encoded in the FMI field of Dispatch Messages. Note: Each UFMI-capable Urban Area (N-DAP Cluster) serves a unique set of Urban IDs. A set of Urban IDs may consist of one or more Urban IDs. Each Urban ID should only be served by one specific Urban Area.

URL Uniform Resource Locator

USB Universal Serial Bus

User Datagram Protocol The IP standard protocol that allows an application program on one machine to send a datagram to an application program on another machine. UDP uses the Internet IP to deliver datagrams. Connectionless transport layer protocol in the TCP/IP protocol stack. UDP is a simple protocol that exchanges datagrams without acknowledgments or guaranteed delivery, requiring that error processing and retransmission be handled by other protocols.

USTA US Telephone Association

UTACS Universal Total Area Communications System

UTAM (2 GHz) Microwave Transition And Management

UTC Universal Coordinated Time

UTC Universal Time Clock

UTC Utilities Telecommunications Committee

UTMS See Universal Mobile Telecommunications System.

UTP Unshielded Twisted Pair

UTR See Universal Tone Receiver.

UVM Universal Voice Module

UXLA Universal Translations (Table UXLA)

UXM See Universal Switching Module.


V V Voltage

V.35 An International Telecommunications Union-Telecommunications Standardization Sector (ITU-T) standard for data transmission at 48 kilobits per second using 60 through 108 kHz group band circuits. Connection between the OMC-R and the DAP is V.35.

Vac Voltage - alternating current

VAD See Voice Activity Detection.

VAF Voice Activity Factor.

VAR Value Added Reseller

VBR Variable Bit Rate

VBR-NRT Variable Bit Rate-Non-Real Time

VBR-RT Variable Bit Rate-Real Time

VC Virtual circuit

VCH See Voice Channel.

VCI Virtual Channel Identifier

VCO Voltage Controlled Oscillator

VCXO Voltage Controlled Crystal Oscillator

VD Virtual destination

Vdc Volts - direct current

VDU See Visual Display Unit.

VEB Variable Electrical Beamtilt (Antenna Specification)

Vector Sum Excited Linear Prediction VSELP is Speech coding method. Defined: VSELP refers to a technique that digitally codes and significantly compresses voice signals, increasing radio channel capacity by reducing the amount of information that needs to be transmitted.

Vertical Dispatch Networking Refers to techniques that increase the Dispatch subscriber capacity in a coverage area that is constrained in size for economical and/or technical reasons by the number of ACGs which are under the control of the same set of Dispatch call processing

functional elements. Some examples of techniques which fall into this category include increasing the number of dispatch call processing elements (i.e., NDAP), increasing the capacity of each call processing element, increasing the number of switches, etc. In other words, Vertical Dispatch Networking refers to those design changes intended to increase capacity of a six DAP system from 270,000 MSs on 500 sites to one million MSs on one thousand sites. Compare to Horizontal Dispatch Networking.

VF Voice frequency

VF Channel Voice Frequency Channel passing 0 to 4000 Hz.

VFWD Voltage representation of Forward Power

VHF Very High Frequency

Virtual Source/ Virtual Destination IGX architecture which segments the ABR control loop into multiple control loops.

Visar Very Innovative Small Analog Radio.

Visited System The cellular system that is providing service to a roaming mobile station.

Visitor Location Register A register based mobility management entity which manages call processing and location tracking for mobile stations operating in its radio subnetwork. Where multiple telecommunications services are supported, there may be more than one VLR supporting a radio subnetwork (though never more than one for a given telecommunications service). VLRs must seek authorization from a mobile station’s home HLR before granting service. A real-time call processing database. MS units are tracked via fixed geographic Interconnect Location Areas (ILAs). MS records contain current information like most recent location area and feature provisioning table. This database should not be confused with the DVLR.

Visual Display Unit Electronic output device that presents data to a terminal user. In a DMS-MSC, the VDU is one of the components of the DMS MAP terminal and in addition to a


keyboard, provides the main user interface to the system.

VLAN Virtual LAN

VLR See Visitor Location Register.

VLR address A directory number which uniquely identifies a VLR in the ISDN/PSTN network. These numbers are used for MAP messaging when a VLR resets and needs to recover information. The VLR addresses must support global title translation to identify the SS7 signaling plane destination address of the associated device.

VM Voice Mail

VME Versa Module Eurocard

VMS Voice Mail System

VNS See Voice Network Switching.

VO Verification Office

Vocoder (Voice + Coder) Voice processing technique which converts spoken language into digital information. In iDEN the vocoder uses the VSELP algorithm for coding and decoding.

VoFR Voice over Frame Relay

VOIC Voice Router task runs in the ACG.

Voice Activity Detection Mechanism employed by IGX to further increase bandwidth efficiency.

Voice Channel RF channel used to transmit cellular voice conversations; integral part of call setup, handover, and disconnect.

Voice Network Switching Feature on IGX switch that allows voice calls to be dynamically switched across the WAN and reduce the number of required PBX ports or facilities deployed in the network.

Voice Privacy The process by which user voice transmitted over a traffic channel is afforded a modest degree of cryptographic protection against air- interface eavesdropping.

VoIP Voice over IP

VOX Voice Operated Transmission

VP Voice Processor

VP Virtual path

VPI Virtual Path Identifier

VPN Virtual Private Network

Vp-p Voltage peak-to-peak

VREF Voltage representation of Reflected Power

VS Virtual source

VS/VD See Virtual Source/ Virtual Destination.

VSAT Very Small Aperture Earth Station Terminals

VSELP See Vector Sum Excited Linear Prediction.

VSI Virtual switch interface

VSRP Virtual Standby Routing Protocol

VSWR Voltage Standing Wave Radio

VToA Voice Transport Over ATM

VTT Voice Trunk Test

W W Watts

WAN See Wide Area Network.

WDS Wireless Data System

WDT Watchdog Timer

WFAU Wireless Fixed Access Unit

WFQ Weighted Fair Queing

Wide Area Network A network which covers a larger geographical area than a LAN and where telecommunications links are implemented, normally leased from the appropriate PTO(s). Examples of WANs include packet switched networks, public data networks and Value Added Networks.

WIN Forum Wireless Information Network Forum


WP Write Protect

WSAPD Worldwide Systems and Aftermarket Products Division

WSP Wireless Service Provider

X X.25 The X.25 protocol is used primary in the Operation and Maintenance functions for the network. The X.25 link is used by the Operation and Maintenance Link (OML) and its functions between network devices linked to the OMC. LAP-B is the protocol used between the BSC, the MSC and the OMC. The DAP uses an Ethernet link but maintains X.25.

X.50 X.50 converter module

XBL RXCDR-BSC Link

XCDR See Transcoder.

XCG Common unit for Midi Node

XDSL Digital subscriber lines

XIWT Cross Industry Working Team

XPM External Peripheral Modules

Y

Z ZCS Zero code suppression

Zone-Based Registration An autonomous registration method in which the mobile station registers whenever it enters a zone that is not in the mobile station's zone list.


MOTOROLA and the Stylized M logo are registered in the U.S. Patent and Trademark Office. All other product or service names are the property of their respective owners.

© Motorola, Inc. 2002

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