i3GPP2 A.S0001.1

Date: June, 2000

3GPP2 Access Network Interfaces Interoperability1Specification2

Release A3

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Table of Contents1

FOREWORD ..........................................................................................................................................XXV2

COPYRIGHT INFORMATION ...........................................................................................................XXX3

1. FUNCTIONAL OVERVIEW ...............................................................................................................14

1.1 PURPOSE...........................................................................................................................................151.2 SCOPE...............................................................................................................................................361.3 ORGANIZATION.................................................................................................................................47

1.3.1 Architectures Supported ..........................................................................................................481.3.2 UNUSED SECTION ................................................................................................................491.3.3 IOS V4.0 Layout ......................................................................................................................410

1.4 DOCUMENTATION CONVENTIONS .....................................................................................................5111.4.1 Procedural Descriptions..........................................................................................................612

1.5 REFERENCES.....................................................................................................................................7131.5.1 Telecommunications Industry Association (TIA) / Electronics Industry Association (EIA) ...7141.5.3 International Telecommunications Union - Telecommunications Sector (ITU-T)...................9151.5.4 Other......................................................................................................................................1016

1.6 TERMINOLOGY ...............................................................................................................................11171.6.1 Acronyms ...............................................................................................................................11181.6.2 Definitions..............................................................................................................................1719

1.7 INTERFACE MODEL.........................................................................................................................21201.7.1 Reference Points A, Ater, and Aquater .......................................................................................21211.7.2 Interface Reference Model.....................................................................................................22221.7.3 MSC BS Functional Partitioning........................................................................................24231.7.4 Information Flows .................................................................................................................25241.7.5 Protocol Reference Model .....................................................................................................2625

1.7.5.1 MSC-BS interface Channel Types.........................................................................................................26261.7.5.2 Transport Protocols ...............................................................................................................................26271.7.5.3 Layer 3 - A1 Interface: Base Station Application Part ..........................................................................2728

1.7.6 Packet Data Micro-Mobility and Macro-Mobility Concepts.................................................2929

2. CALL PROCESSING AND SUPPLEMENTARY SERVICES ......................................................3030

2.1 CALL CONTROL ..............................................................................................................................30312.1.1 Terrestrial Circuit Allocation ................................................................................................30322.1.2 Radio Channel Allocation......................................................................................................30332.1.3 Traffic Channel Release.........................................................................................................3034

2.2 A1 INTERFACE CALL SETUP FOR VOICE AND CIRCUIT DATA CALLS...............................................31352.2.1 Mobile Originated Calls ........................................................................................................3136

2.2.1.1 Connection Management (CM) Service Request ..................................................................................31372.2.1.2 Complete Layer 3 Information ..............................................................................................................32382.2.1.3 UNUSED SECTION (Setup) ................................................................................................................33392.2.1.4 UNUSED SECTION.............................................................................................................................33402.2.1.5 Assignment Request ..............................................................................................................................33412.2.1.6 Assignment Complete............................................................................................................................33422.2.1.7 Assignment Failure................................................................................................................................33432.2.1.8 UNUSED SECTION.............................................................................................................................34442.2.1.9 Progress .................................................................................................................................................34452.2.1.10UNUSED SECTION.............................................................................................................................34462.2.1.11UNUSED SECTION 2.2.1.12 UNUSED SECTION ............................................................................34472.2.1.13UNUSED SECTION.............................................................................................................................34482.2.1.15UNUSED SECTION.............................................................................................................................3449

2.2.2 Mobile Origination Examples................................................................................................34502.2.2.1 Mobile Origination................................................................................................................................35512.2.2.2 Mobile Origination with Access Probe Handoff, Access Handoff and Channel Assignment into52Soft/Softer Handoff ............................................................................................................................................37532.2.2.3 Mobile Origination with PACA Service................................................................................................4254

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2.2.3 Mobile Terminated Voice and Circuit Data Calls .................................................................4812.2.3.1 Paging Request ......................................................................................................................................4822.2.3.2 Paging Response ...................................................................................................................................4932.2.3.3 UNUSED SECTION.............................................................................................................................4942.2.3.4 UNUSED SECTION.............................................................................................................................4952.2.3.5 UNUSED SECTION.............................................................................................................................4962.2.3.6 Assignment Request ..............................................................................................................................5072.2.3.7 Assignment Complete............................................................................................................................5082.2.3.8 Assignment Failure................................................................................................................................5092.2.3.9 UNUSED SECTION h ..........................................................................................................................50102.2.3.10Connect .................................................................................................................................................50112.2.3.11UNUSED SECTION.............................................................................................................................50122.2.3.12Alert With Information..........................................................................................................................5113

2.2.4 Mobile Termination Examples...............................................................................................52142.2.4.1 Mobile Termination...............................................................................................................................52152.2.4.2 Mobile Termination, Assignment Retry ................................................................................................5516

2.2.5 Mobile to Mobile Calls ..........................................................................................................58172.2.6 Emergency Calls ....................................................................................................................58182.2.7 Test Calls ...............................................................................................................................58192.2.8 BS Initiated Call Setup...........................................................................................................5820

2.2.8.1 BS Service Request ...............................................................................................................................58212.2.8.2 BS Service Response.............................................................................................................................59222.2.8.3 BS Initiated Call Setup Example ...........................................................................................................5923

2.3 A1 INTERFACE CALL CLEARING PROCEDURES ...............................................................................61242.3.1 Call Clearing Initiated by the MS or BS................................................................................6125

2.3.1.1 Successful Clear Scenarios....................................................................................................................61262.3.1.2 Unsuccessful Call Clearing Procedures.................................................................................................61272.3.1.3 UNUSED SECTION.............................................................................................................................61282.3.1.4 UNUSED SECTION.............................................................................................................................61292.3.1.5 Clear Request ........................................................................................................................................61302.3.1.6 Clear Command.....................................................................................................................................62312.3.1.7 Clear Complete......................................................................................................................................6232

2.3.2 Call Clearing Initiated by the MSC .......................................................................................63332.3.2.1 Scenario 1 - Clear from the Network.....................................................................................................63342.3.2.2 UNUSED SECTION.............................................................................................................................63352.3.2.3 Call clearing via Clear Command..........................................................................................................63362.3.2.4 Call Clearing when Tones/Announcements are Provided .....................................................................6437

2.3.3 Call Clearing Collision..........................................................................................................64382.3.4 Call Clearing for Handoff......................................................................................................64392.3.5 Call Flow Diagrams for Call Clear Operation......................................................................6440

2.3.5.1 Call Clear Initiated by MS.....................................................................................................................64412.3.5.2 Call Clear Initiated by BS......................................................................................................................66422.3.5.3 Call Clear Initiated by MSC ..................................................................................................................6743

2.4 TRAFFIC CHANNEL RADIO LINK SUPERVISION ................................................................................68442.5 SUPPORT OF SUPPLEMENTARY SERVICES .......................................................................................6845

2.5.1 Support of TIA/EIA 664 Wireless Features............................................................................68462.5.1.1 Flash with Information ..........................................................................................................................69472.5.1.2 Flash with Information Ack...................................................................................................................69482.5.1.3 Feature Notification...............................................................................................................................70492.5.1.4 Feature Notification Ack .......................................................................................................................7050

2.5.2 DTMF Transmission Using In-band Tones ...........................................................................71512.5.3 Burst DTMF Transmission ....................................................................................................71522.5.4 UNUSED SECTION ..............................................................................................................71532.5.5 Supplementary Services Flow Charts ....................................................................................7254

2.5.5.1 UNUSED SECTION.............................................................................................................................72552.5.5.2 Call Waiting ..........................................................................................................................................72562.5.5.3 UNUSED SECTION.............................................................................................................................73572.5.5.4 UNUSED SECTION.............................................................................................................................73582.5.5.5 Three-Way Calling (Method 1) ..........................................................................................................73592.5.5.6 Three-Way Calling - (Method 2)...........................................................................................................7460

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2.5.5.7 UNUSED SECTION.............................................................................................................................7412.5.5.8 UNUSED SECTION.............................................................................................................................7422.5.5.9 Message Waiting Notification on the Paging Channel ..........................................................................7532.5.5.10Message Waiting Notification on the Traffic Channel ..........................................................................764

2.6 SUPPORT OF SHORT MESSAGE SERVICE..........................................................................................7752.6.1 SMS Procedures.....................................................................................................................786

2.6.1.1 SMS - Mobile Originated Point-to-Point ..............................................................................................7872.6.1.2 SMS - Mobile Terminated Point-to-Point .............................................................................................7882.6.1.3 SMS - Broadcast....................................................................................................................................789

2.6.2 SMS Delivery on the Control Channel...................................................................................79102.6.2.1 ADDS Page ...........................................................................................................................................79112.6.2.2 ADDS Transfer......................................................................................................................................79122.6.2.3 ADDS Page Ack....................................................................................................................................81132.6.2.4 SMS Message Flow Using ADDS, Control Channel ............................................................................8114

2.6.3 SMS Delivery on the Traffic Channel ....................................................................................89152.6.3.1 ADDS Deliver .......................................................................................................................................89162.6.3.2 ADDS Deliver Ack................................................................................................................................89172.6.3.3 SMS Message Flow Using ADDS, Traffic Channel..............................................................................9018

2.7 SUPPORT OF OVER-THE-AIR SERVICE PROVISIONING (OTASP) AND OVER THE AIR PARAMETER19ADMINISTRATION (OTAPA).......................................................................................................................9220

2.7.1 OTASP Support......................................................................................................................92212.7.1.1 OTASP Call Setup.................................................................................................................................93222.7.1.2 OTASP Data Exchanges........................................................................................................................93232.7.1.3 ADDS Deliver .......................................................................................................................................93242.7.1.4 ADDS Deliver ACK..............................................................................................................................93252.7.1.5 SSD Update procedure ..........................................................................................................................93262.7.1.6 Privacy Mode procedure........................................................................................................................93272.7.1.7 Rejection ...............................................................................................................................................93282.7.1.8 OTASP Call Clear .................................................................................................................................93292.7.1.9 OTASP Message Flow ..........................................................................................................................9430

2.7.2. OTAPA support...........................................................................................................................96312.8 ERROR HANDLING ..........................................................................................................................9732

2.8.1 Rejection ................................................................................................................................97332.8.1.1 Successful Operation .............................................................................................................................97342.8.1.2 Failure Operation...................................................................................................................................9735

2.9 UNUSED SECTION .....................................................................................................................97362.10 MOBILE ORIGINATED CALLS WITH PACA SERVICE .......................................................................9837

2.10.1 PACA Service Support ...........................................................................................................99382.10.1.1PACA Command...................................................................................................................................99392.10.1.2PACA Command Ack ...........................................................................................................................99402.10.1.3PACA Update......................................................................................................................................100412.10.1.4PACA Update Ack ..............................................................................................................................10142

2.11 SUPPORT OF POSITION LOCATION SERVICE...................................................................................102432.12 USER ZONES .................................................................................................................................10344

2.12.1 Invoking User Zone at Registration.....................................................................................103452.12.2 Use of User Zones During Call Setup..................................................................................104462.12.3 Changing User Zone During a Call.....................................................................................10547

2.12.3.1User Zone Change ...............................................................................................................................105482.13 CIRCUIT DATA CALLS ...................................................................................................................10649

2.13.1 Asynchronous Data and Group-3 Fax Services...................................................................106502.13.1.1Data Only ............................................................................................................................................10651

2.13.2 A5 Connections for Circuit Data Calls................................................................................106522.13.3 Support for Handoffs of Asynchronous Data and G3 Fax Calls .........................................10753

2.14 PACKET DATA CALLS ...................................................................................................................108542.14.1 Packet Data Assumptions ....................................................................................................109552.14.2 BS Initiated Call Setup.........................................................................................................10956

2.14.2.1BS Service Request .............................................................................................................................110572.14.2.2BS Service Response...........................................................................................................................110582.14.2.3BS Initiated Call Setup Example .........................................................................................................11159

2.14.3 A8/A9 Interface Procedures.................................................................................................11260

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2.14.4 A8/A9 Interface Setup Procedures And Messages...............................................................11212.14.4.1A9-Setup-A8 .......................................................................................................................................11222.14.4.2A9-Connect-A8 ...................................................................................................................................11332.14.4.3A9-BS Service Request .......................................................................................................................11442.14.4.4A9-BS Service Response.....................................................................................................................1145

2.14.5 A8/A9 Interface Clearing Procedures and Messages ..........................................................11562.14.5.1Successful Clearing Scenarios.............................................................................................................11572.14.5.2Unsuccessful A8 Interface Clearing Procedures..................................................................................11682.14.5.3A9-Release-A8 ....................................................................................................................................11792.14.5.4A9-Release-A8 Complete....................................................................................................................117102.14.5.5A9-Disconnect-A8...............................................................................................................................11811

2.14.6 A8/A9 Interface Handoff Procedures and Messages ...........................................................119122.14.6.1A9-Air Link (AL) Connected ..............................................................................................................119132.14.6.2A9-Air Link (AL) Connected Ack.......................................................................................................119142.14.6.3A9-Air Link (AL) Disconnected..........................................................................................................120152.14.6.4A9-Air Link (AL) Disconnected Ack ..................................................................................................12016

2.14.7 A8/A9 Call Flows................................................................................................................121172.14.7.1Mobile Initiated Initial Call Setup and Mobile IP Registration Successful Operation .....................121182.14.72 BS Initiated Call Release to Dormant State.........................................................................................123192.14.7.3MS Initiated Call Release to Dormant State........................................................................................125202.14.7.4MS Power Down .................................................................................................................................127212.14.7.5PDSN Initiated Service Release ..........................................................................................................129222.14.7.6MS Initiated Call Re-Activation from Dormant State .........................................................................130232.14.7.7Network Initiated Call Re-Activation from Dormant State .................................................................130242.14.7. Mobile Terminated Packet Data Rejection During a Voice Call .........................................................133252.14.7.9Dormant Handoff (Inter-BSC/Inter_PCF) - Mobile served by same PDSN........................................134262.14.7.10 Dormant Handoff (Inter-BSC/Inter_PCF) - Mobile served by a different PDSN ............................136272.14.7.11 Soft / Softer Handoff........................................................................................................................137282.14.7.12 Inter-BS Hard Handoff (within the same PCF) ................................................................................138292.14.7.13 Inter-PCF Hard Handoff (Within same PDSN)................................................................................141302.14.7.14 Inter-PCF Hard Handoff (Within same PDSN) With Return On Failure.........................................14431

2.15 A10/A11 INTERFACE PROCEDURES..............................................................................................147322.15.1 A10 Interface Setup Procedures ..........................................................................................14833

2.15.1.1A10 Connection Establishment ...........................................................................................................148342.15.2 A10 Interface Operational Procedures................................................................................15035

2.15.2.1A10 Connection Periodic Re-registration.........................................................................................150362.15.3 A10 Interface Release Procedures.......................................................................................15037

2.15.3.1A10 Connection Release PCF Requested........................................................................................150382.15.3.2A10 Connection Release PDSN Initiated ........................................................................................15139

2.15.4 A10 Interface Packet Accounting Procedures .....................................................................152402.15.5 A10/A11 Interface Call Flows .............................................................................................15241

2.15.5.1Mobile Originated Packet Call Setup Successful Operation ............................................................152422.15.5.2Mobile Originated Packet Call Setup Failure Operation ..................................................................155432.15.5.3 Mobile Originated Packet Call Setup With registration to alternate PDSN ....................................157442.15.5.4Packet Data Service Session Clearing-PDSN Initiated........................................................................160452.15.5.5Packet Data Service Session Clearing MSC Initiated.......................................................................162462.15.5.6Packet Data Service Session Clearing MS Initiated .........................................................................163472.15.5.7Packet Data Service Session PDSN Initiated (Crossing A11-Registration Request and A11-48Registration Update).........................................................................................................................................164492.15.5.8Inter-PCF Dormant Handoff Mobile Continues to be Served by the Serving PDSN .......................166502.15.5.9Inter-PCF Dormant Handoff Mobile Served by a New Target PDSN..............................................170512.15.5.10 Inter-PCF Hard Handoff Mobile Continues to be Served by the Serving PDSN..........................174522.15.5.11 Inter-BS Hard Handoff Mobile Served by a New Target PDSN...................................................17853

3. RADIO RESOURCE MANAGEMENT..........................................................................................18254

3.1 RADIO CHANNEL SUPERVISION.....................................................................................................182553.1.1 Traffic Channel Radio Link Supervision..............................................................................182563.1.2 Idle Channel Observation....................................................................................................18257

3.2 RADIO CHANNEL MANAGEMENT ..................................................................................................182583.2.1 Radio Channel Configuration Management........................................................................182593.2.2 Radio Traffic Channel Management....................................................................................18360

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3.2.2.1 Radio Channel Allocation ...................................................................................................................18313.2.2.2 Radio Traffic Channel Release ............................................................................................................18323.2.2.3 Radio Traffic Channel Power Control .................................................................................................18333.2.2.4 UNUSED SECTION...........................................................................................................................18343.2.2.5 Channel Encoding and Decoding ........................................................................................................1835

3.3 HANDOFF VIA MSC ......................................................................................................................18463.3.1 Introduction .........................................................................................................................1847

3.3.1.1 Recognition That a Handoff is Required by a BS................................................................................18483.3.1.2 Recognition That a Handoff is Required by the MSC.........................................................................18493.3.1.3 Concept of Designated Cell .............................................................................................................18410

3.3.2 Inter-BS Hard Handoff ........................................................................................................185113.3.2.1 Triggering Phase..................................................................................................................................185123.3.2.2 Target Determination Phase ................................................................................................................185133.3.2.3 Resource Establishment.......................................................................................................................186143.3.2.4 Execution Phase ..................................................................................................................................187153.3.2.5 UNUSED SECTION...........................................................................................................................189163.3.2.6 Call Clearing .......................................................................................................................................189173.3.2.7 Handoff Failure Handling....................................................................................................................19018

3.3.3 Intra-BS Handoff .................................................................................................................192193.3.3.1 Handoff Performed..............................................................................................................................19220

3.4 HANDOFF VIA DIRECT BS-TO-BS SIGNALING ...............................................................................193213.4.1 A3 Interface Procedures and Messages...............................................................................19322

3.4.1.1 A3 Interface Setup Procedures and Messages .....................................................................................193233.4.1.2 A3 Interface Operational Procedures and Messages............................................................................194243.4.1.3 A3 Interface Clearing Procedures and Messages.................................................................................20125

3.4.2 UNUSED SECTION ............................................................................................................203263.4.3 A7 Interface Procedures and Messages...............................................................................20327

3.4.3.1 A7 Interface Messages.........................................................................................................................203283.4.4 Soft/Softer Handoff Addition................................................................................................211293.4.5 Soft/softer Handoff Removal................................................................................................211303.4.6 Cell Removal by a Target BS...............................................................................................211313.4.7 Call Clearing .......................................................................................................................212323.4.8 Handoff Performed ..............................................................................................................212333.4.9 Access Handoff and Channel Assignment into Soft Handoff ...............................................212343.4.10 Soft/Softer Handoff of High Speed Packet Data ..................................................................21335

3.4.10.1Soft/Softer Handoff of Forward Link Bursts of Data ..........................................................................213363.4.10.2Soft/Softer Handoff of Reverse Link Bursts of Data ...........................................................................21437

3.5 HANDOFF CALL FLOWS ................................................................................................................215383.5.1 UNUSED SECTION ............................................................................................................215393.5.2 Handoff Call Flows..............................................................................................................21540

3.5.2.1 Hard Handoff (via MSC).....................................................................................................................215413.5.2.3 Soft/softer Handoff Using Direct BS to BS (A3 and A7) Connections ...............................................22342

4. MOBILITY MANAGEMENT, AUTHENTICATION, AND PRIVACY.....................................23343

4.1 MOBILITY MANAGEMENT .............................................................................................................233444.1.1 Paging..................................................................................................................................233454.1.2 Registration and Deregistration ..........................................................................................23346

4.1.2.1 Network Initiated Registration Procedures..........................................................................................233474.1.2.2 Mobile Initiated Registration...............................................................................................................234484.1.2.3 Location Updating Request .................................................................................................................235494.1.2.4 Location Updating Accept...................................................................................................................235504.1.2.5 Location Updating Reject....................................................................................................................236514.1.2.6 Power Down Registration at the End of a Call ....................................................................................23652

4.1.3 UNUSED SECTION ............................................................................................................236534.1.4 UNUSED SECTION ............................................................................................................23654

4.2 AUTHENTICATION AND PRIVACY ..................................................................................................237554.2.1 Shared Secret Data Procedures...........................................................................................23956

4.2.1.1 SSD Update Procedure - Successful Case ...........................................................................................240574.2.1.2 SSD Update Request ...........................................................................................................................24158

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4.2.1.3 Base Station Challenge........................................................................................................................24114.2.1.4 Base Station Challenge Response........................................................................................................24224.2.1.5 SSD Update Response.........................................................................................................................2423

4.2.2 Terminal Authentication ......................................................................................................24344.2.2.1 Authentication Request .......................................................................................................................24454.2.2.2 Authentication Response .....................................................................................................................2446

4.2.3 Parameter Update ...............................................................................................................24574.2.3.1 Parameter Update Request...................................................................................................................24584.2.3.2 Parameter Update Confirm..................................................................................................................2469

4.2.4 Signaling Message Encryption ............................................................................................247104.2.5 Voice Privacy.......................................................................................................................24711

4.2.5.1 Privacy Mode Procedure .....................................................................................................................247124.2.5.2 UNUSED SECTION...........................................................................................................................248134.2.5.3 Privacy Mode Command .....................................................................................................................248144.2.5.4 Privacy Mode Complete ......................................................................................................................24915

4.3 PACKET DATA SECURITY CONSIDERATIONS .................................................................................250164.3.1 PCF-PDSN Security Association.........................................................................................25017

4.3.1.1 Computing Registration Authentication Extension Values .................................................................25018

5. LAYERS 1 & 2 AND TERRESTRIAL FACILITY MANAGEMENT.........................................25219

5.1 PHYSICAL LAYER SPECIFICATION (LAYER 1) ................................................................................252205.2 ANSI SS7 TRANSPORT SPECIFICATION (LAYER 2) .......................................................................25221

5.2.1 Field of Application .............................................................................................................253225.2.2 Message Transfer Part (MTP) Functions ............................................................................25323

5.2.2.1 General ................................................................................................................................................253245.2.2.2 Level 1 (T1.111.2)...............................................................................................................................253255.2.2.3 Level 2 (T1.111.3)...............................................................................................................................254265.2.2.4 Level 3 (T1.111.4)...............................................................................................................................254275.2.2.5 Testing and Maintenance (T1.111.7)...................................................................................................256285.2.2.6 Interface Functions ..............................................................................................................................256295.2.2.7 Overload Control (Message Throughput Congestion).........................................................................25730

5.2.3 SCCP Transport Layer Specification (SCCP Functions) ....................................................258315.2.3.1 Overview .............................................................................................................................................258325.2.3.2 Primitives (T1.112.1) ..........................................................................................................................258335.2.3.3 SCCP Messages (T1.112.2).................................................................................................................259345.2.3.4 SCCP Formats and Codes (T1.112.3) .................................................................................................260355.2.3.5 SCCP Procedures (T1.112.4) ..............................................................................................................26036

5.2.4 Use of the SCCP ..................................................................................................................262375.2.4.1 The Direct Transfer Application Part ..................................................................................................262385.2.4.2 The BS Management Application Part ................................................................................................262395.2.4.3 Connection Establishment ...................................................................................................................262405.2.4.4 Connection Release .............................................................................................................................266415.2.4.5 Abnormal SCCP Release.....................................................................................................................266425.2.4.6 SCCP Reference Generation Philosophy.............................................................................................269435.2.4.7 SCCP Transfer of DTAP and BSMAP Messages................................................................................26944

5.3 USE OF ATM (LAYER 2)...............................................................................................................274455.3.1 Field of Application .............................................................................................................274465.3.2 ATM Layer ...........................................................................................................................274475.3.3 ATM Adaptation Layer ........................................................................................................27448

5.4 NETWORK AND TRANSPORT PROTOCOLS......................................................................................275495.4.1 Signaling Connection Transport Protocol Options .............................................................275505.4.2 User Traffic Connection Transport Protocol Options .........................................................277515.4.3 TCP Transport Protocol Usage ...........................................................................................27852

5.4.3.1 General Use of TCP.............................................................................................................................278535.4.3.2 Use of TCP for the A3 and A7 Interfaces............................................................................................280545.4.3.3 Use of TCP for the A9 Interface..........................................................................................................28055

5.4.4 IP Network Protocol Usage .................................................................................................281565.4.5 UDP Transport Protocol Usage ..........................................................................................28157

5.4.5.1 UDP Transport Protocol Usage for the A11 Interface.........................................................................281585.4.5.2 UDP Transport Protocol Usage for the A9 Interface...........................................................................28159

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5.4.6 Mobile IP Protocol Usage ...................................................................................................28215.4.6.1 Mobile IP Based Tunneling Protocol ..................................................................................................2822

5.4.7 GRE Protocol Usage ...........................................................................................................28435.5 TERRESTRIAL CIRCUIT MANAGEMENT PROCEDURES ...................................................................2864

5.5.1 Terrestrial Circuit Allocation/Deallocation ........................................................................28655.5.1.1 A2 Terrestrial Circuit Allocation.........................................................................................................28665.5.1.2 A3 Connection Establishment .............................................................................................................2867

5.5.2 Blocking/Unblocking ...........................................................................................................28785.5.2.1 A2 Terrestrial Circuit Blocking/Unblocking .......................................................................................2879

5.5.3 Reset Circuit Procedure.......................................................................................................290105.5.3.1 A1 Reset Circuit (at the BS) ................................................................................................................290115.5.3.2 A1 Reset Circuit Acknowledge (from MSC).......................................................................................291125.5.3.3 A1 Reset Circuit (at the MSC) ............................................................................................................292135.5.3.4 A1 Reset Circuit Acknowledge (from BS) ..........................................................................................29214

5.5.4 Global System Reset.............................................................................................................294155.5.4.1 A1 Reset ..............................................................................................................................................294165.5.4.2 A1 Reset Acknowledge .......................................................................................................................295175.5.4.3 A1 Global Reset Examples..................................................................................................................296185.5.4.4 UNUSED SECTION...........................................................................................................................301195.5.4.5 UNUSED SECTION...........................................................................................................................301205.5.4.6 UNUSED SECTION...........................................................................................................................301215.5.4.7 A7-Reset..............................................................................................................................................301225.5.4.8 A7-Reset Acknowledge .......................................................................................................................301235.5.4.9 A7 Global Reset Examples..................................................................................................................30224

5.5.5 Tandem Free Operation.......................................................................................................306255.5.5.1 Transcoder Control Request ................................................................................................................306265.5.5.2 Transcoder Control Acknowledge.......................................................................................................30727

5.5.6 UNUSED SECTION ............................................................................................................30728

6. MESSAGES, INFORMATION ELEMENTS, AND TIMER DEFINITIONS.............................30929

6.1 MESSAGE DEFINITIONS .................................................................................................................309306.1.1 Generic Message Formats ...................................................................................................30931

6.1.1.1 A1 Message Header.............................................................................................................................309326.1.1.2 Message Body, Coding, and Ordering of Elements.............................................................................312336.1.1.3 Forward Compatibility Guidelines ......................................................................................................31334

6.1.2 Call Processing Message Formats ......................................................................................317356.1.2.1 Complete Layer 3 Information ............................................................................................................317366.1.2.2 CM Service Request ............................................................................................................................318376.1.2.3 Paging Request ....................................................................................................................................328386.1.2.4 Paging Response .................................................................................................................................332396.1.2.5 UNUSED SECTION...........................................................................................................................340406.1.2.6 UNUSED SECTION...........................................................................................................................340416.1.2.7 UNUSED SECTION...........................................................................................................................340426.1.2.8 UNUSED SECTION...........................................................................................................................340436.1.2.9 UNUSED SECTION...........................................................................................................................340446.1.2.10Connect ...............................................................................................................................................341456.1.2.11UNUSED SECTION...........................................................................................................................341466.1.2.12Progress ...............................................................................................................................................342476.1.2.13UNUSED SECTION...........................................................................................................................343486.1.2.14UNUSED SECTION...........................................................................................................................343496.1.2.15Assignment Request ............................................................................................................................344506.1.2.16Assignment Complete..........................................................................................................................350516.1.2.17Assignment Failure..............................................................................................................................352526.1.2.18UNUSED SECTION...........................................................................................................................352536.1.2.19UNUSED SECTION...........................................................................................................................353546.1.2.20Clear Request ......................................................................................................................................354556.1.2.21Clear Command...................................................................................................................................356566.1.2.22Clear Complete....................................................................................................................................358576.1.2.23UNUSED SECTION...........................................................................................................................358586.1.2.24Alert With Information........................................................................................................................359596.1.2.25UNUSED SECTION...........................................................................................................................36060

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6.1.2.26UNUSED SECTION...........................................................................................................................36016.1.2.27UNUSED SECTION...........................................................................................................................36026.1.2.28BS Service Request .............................................................................................................................36036.1.2.29BS Service Response...........................................................................................................................3624

6.1.3 Supplementary Services Message Formats..........................................................................36456.1.3.1 UNUSED SECTION...........................................................................................................................36466.1.3.2 UNUSED SECTION...........................................................................................................................36476.1.3.3 UNUSED SECTION...........................................................................................................................36486.1.3.4 UNUSED SECTION...........................................................................................................................36496.1.3.5 UNUSED SECTION...........................................................................................................................364106.1.3.6 UNUSED SECTION...........................................................................................................................364116.1.3.7 Flash with Information ........................................................................................................................365126.1.3.8 Flash with Information Ack.................................................................................................................368136.1.3.9 Feature Notification.............................................................................................................................369146.1.3.10Feature Notification Ack .....................................................................................................................373156.1.3.11PACA Command.................................................................................................................................374166.1.3.12PACA Command Ack .........................................................................................................................375176.1.3.13PACA Update......................................................................................................................................376186.1.3.14 PACA Update Ack...........................................................................................................................37919

6.1.4 Mobility Management Message Formats.............................................................................380206.1.4.1 Authentication Request .......................................................................................................................380216.1.4.2 Authentication Response .....................................................................................................................384226.1.4.3 User Zone Update...............................................................................................................................387236.1.4.4 SSD Update Request ...........................................................................................................................388246.1.4.5 Base Station Challenge........................................................................................................................389256.1.4.6 Base Station Challenge Response........................................................................................................390266.1.4.7 SSD Update Response.........................................................................................................................391276.1.4.8 Location Updating Request .................................................................................................................392286.1.4.9 Location Updating Accept...................................................................................................................398296.1.4.10Location Updating Reject....................................................................................................................399306.1.4.11Parameter Update Request...................................................................................................................400316.1.4.12Parameter Update Confirm..................................................................................................................400326.1.4.13UNUSED SECTION...........................................................................................................................401336.1.4.14 UNUSED SECTION........................................................................................................................401346.1.4.15UNUSED SECTION...........................................................................................................................401356.1.4.16UNUSED SECTION...........................................................................................................................401366.1.4.17UNUSED SECTION...........................................................................................................................401376.1.4.18Privacy Mode Command .....................................................................................................................401386.1.4.19Privacy Mode Complete ......................................................................................................................40339

6.1.5 Handoff Message Formats...................................................................................................404406.1.5.1 UNUSED SECTION...........................................................................................................................404416.1.5.2 UNUSED SECTION...........................................................................................................................404426.1.5.3 UNUSED SECTION...........................................................................................................................404436.1.5.4 Handoff Required ................................................................................................................................405446.1.5.5 Handoff Request..................................................................................................................................415456.1.5.6 Handoff Request Acknowledge ...........................................................................................................426466.1.5.7 Handoff Failure ...................................................................................................................................431476.1.5.8 Handoff Command ..............................................................................................................................432486.1.5.9 Handoff Required Reject .....................................................................................................................440496.1.5.10Handoff Commenced...........................................................................................................................441506.1.5.11Handoff Complete ...............................................................................................................................442516.1.5.12Handoff Performed..............................................................................................................................443526.1.5.13UNUSED SECTION...........................................................................................................................444536.1.5.14UNUSED SECTION...........................................................................................................................44454

6.1.6 Facility Management Message Formats..............................................................................445556.1.6.1 UNUSED SECTION...........................................................................................................................445566.1.6.2 Block ...................................................................................................................................................445576.1.6.3 Block Acknowledge ............................................................................................................................447586.1.6.4 Unblock ...............................................................................................................................................447596.1.6.5 Unblock Acknowledge ........................................................................................................................449606.1.6.6 Reset ....................................................................................................................................................450616.1.6.7 Reset Acknowledge .............................................................................................................................45162

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6.1.6.8 Reset Circuit ........................................................................................................................................45216.1.6.9 Reset Circuit Acknowledge .................................................................................................................45426.1.6.10 Transcoder Control Request ...............................................................................................................45536.1.6.11 Transcoder Control Acknowledge......................................................................................................45546.1.6.12UNUSED SECTION...........................................................................................................................45656.1.6.13UNUSED SECTION...........................................................................................................................45666.1.6.14UNUSED SECTION...........................................................................................................................4567

6.1.7 Application Data Delivery Service (ADDS) Message Formats ...........................................45786.1.7.1 ADDS Page .........................................................................................................................................45796.1.7.2 ADDS Transfer....................................................................................................................................461106.1.7.3 ADDS Deliver .....................................................................................................................................466116.1.7.4 ADDS Page Ack..................................................................................................................................469126.1.7.5 ADDS Deliver Ack..............................................................................................................................47213

6.1.8 Error Handling Messages....................................................................................................473146.1.8.1 Rejection .............................................................................................................................................47315

6.1.9 A3 Interface Message Formats ............................................................................................476166.1.9.1 A3-Connect .........................................................................................................................................476176.1.9.2 A3-Connect Ack..................................................................................................................................480186.1.9.3 A3-Remove .........................................................................................................................................482196.1.9.4 A3-Remove Ack ..................................................................................................................................485206.1.9.5 A3-Drop ..............................................................................................................................................487216.1.9.6 A3-Propagation Delay Measurement Report.......................................................................................489226.1.9.7 A3-IS-95 FCH Forward.......................................................................................................................491236.1.9.8 A3-IS-95 FCH Reverse........................................................................................................................492246.1.9.9 A3-IS-2000 FCH Forward...................................................................................................................493256.1.9.10 A3-IS-2000 FCH Reverse...................................................................................................................494266.1.9.11A3-Physical Transition Directive ........................................................................................................495276.1.9.12A3-PhysicalTransition Directive Ack..................................................................................................498286.1.9.13A3-IS-2000 DCCH Forward................................................................................................................501296.1.9.14 A3-IS-2000 DCCH Reverse ...............................................................................................................502306.1.9.15A3-Traffic Channel Status...................................................................................................................503316.1.9.16A3-IS-2000 SCH Forward...................................................................................................................506326.1.9.17 A3-IS-2000 SCH Reverse...................................................................................................................50733

6.1.10 A9 Interface Message Formats ............................................................................................508346.1.10.1A9-Setup-A8 .......................................................................................................................................508356.1.10.2A9-Connect-A8 ...................................................................................................................................512366.1.10.3A9-Disconnect-A8...............................................................................................................................515376.1.10.4A9-Release-A8 ....................................................................................................................................518386.1.10.5A9-Release-A8 Complete....................................................................................................................521396.1.10.6A9-BS Service Request .......................................................................................................................522406.1.10.7A9-BS Service Response.....................................................................................................................524416.1.10.8A9-AL Connected ...............................................................................................................................525426.1.10.9A9-AL Connected Ack........................................................................................................................527436.1.10.10 A9-AL Disconnected........................................................................................................................528446.1.10.11 A9-AL Disconnected Ack ................................................................................................................53045

6.1.11 A11 Interface Message Formats ..........................................................................................531466.1.11.1A11-Registration Request ...................................................................................................................531476.1.11.2A11-Registration Reply.......................................................................................................................535486.1.11.3A11-Registration Update.....................................................................................................................539496.1.11.4 A11-Registration Acknowledge .......................................................................................................54250

6.1.12 A7 Interface Message Formats ............................................................................................545516.1.12.1A7-Handoff Request............................................................................................................................545526.1.12.2A7-Handoff Request Ack ....................................................................................................................555536.1.12.3A7-Drop Target ...................................................................................................................................560546.1.12.4A7-Drop Target Ack............................................................................................................................562556.1.12.5A7-Target Removal Request ...............................................................................................................564566.1.12.6A7-Target Removal Response .............................................................................................................567576.1.12.7UNUSED SECTION...........................................................................................................................569586.1.12.8UNUSED SECTION...........................................................................................................................569596.1.12.9UNUSED SECTION...........................................................................................................................569606.1.12.10 A7- Source Transfer Performed .......................................................................................................570616.1.12.11 A7-Reset ..........................................................................................................................................57262

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6.1.12.12 A7-Reset Acknowledge....................................................................................................................57316.1.12.13 A7-Paging Channel Message Transfer .............................................................................................57426.1.12.14 A7-Paging Channel Message Transfer Ack......................................................................................57736.1.12.15 A7-Access Channel Message Transfer .............................................................................................57846.1.12.16 A7-Access Channel Message Transfer Ack .....................................................................................58056.1.12.17 A7-Burst Request .............................................................................................................................58166.1.12.18 A7-Burst Response ..........................................................................................................................58776.1.12.19 A7-Burst Commit.............................................................................................................................5918

6.2 INFORMATION ELEMENT DEFINITIONS ..........................................................................................59596.2.1 Generic Information Element Encoding ..............................................................................59510

6.2.1.1 Conventions.........................................................................................................................................595116.2.1.2 Information Element Identifiers ..........................................................................................................596126.2.1.3 A1 Interface Information Element Types ............................................................................................611136.2.1.4 A3 and A7 Interface Information Elements.........................................................................................614146.2.1.5 Additional Coding and Interpretation Rules for Information Elements...............................................614156.2.1.6 Cross Reference of Information Elements With Messages..................................................................61616

6.2.2 Information Elements...........................................................................................................637176.2.2.1 Message Discrimination ......................................................................................................................637186.2.2.2 Data Link Connection Identifier (DLCI) .............................................................................................638196.2.2.3 Length Indicator (LI)...........................................................................................................................638206.2.2.4 Message Type......................................................................................................................................639216.2.2.5 Message Type II ..................................................................................................................................643226.2.2.6 Channel Number..................................................................................................................................645236.2.2.7 Channel Type ......................................................................................................................................646246.2.2.8 RF Channel Identity ............................................................................................................................648256.2.2.9 SID ......................................................................................................................................................650266.2.2.10IS-95 Channel Identity.........................................................................................................................651276.2.2.11UNUSED SECTION...........................................................................................................................652286.2.2.12Encryption Information .......................................................................................................................653296.2.2.13Voice Privacy Request ........................................................................................................................655306.2.2.14Physical Channel Info .........................................................................................................................656316.2.2.15Classmark Information Type 2 ............................................................................................................658326.2.2.16Mobile Identity....................................................................................................................................662336.2.2.17Slot Cycle Index ..................................................................................................................................665346.2.2.18Priority.................................................................................................................................................665356.2.2.19Cause ...................................................................................................................................................668366.2.2.20Cell Identifier ......................................................................................................................................672376.2.2.21Cell Identifier List ...............................................................................................................................675386.2.2.22Circuit Identity Code...........................................................................................................................675396.2.2.23Circuit Identity Code Extension ..........................................................................................................676406.2.2.24Unused.................................................................................................................................................676416.2.2.25Downlink Radio Environment.............................................................................................................677426.2.2.26Unused.................................................................................................................................................678436.2.2.27Unused.................................................................................................................................................678446.2.2.28Unused.................................................................................................................................................678456.2.2.29Unused.................................................................................................................................................678466.2.2.30PDSN IP Address ................................................................................................................................679476.2.2.31Handoff Power Level...........................................................................................................................680486.2.2.32USER Zone ID ....................................................................................................................................681496.2.2.33Reverse Pilot Gating Rate....................................................................................................................682506.2.2.34IS-2000 Channel Identity.....................................................................................................................683516.2.2.35Response Request................................................................................................................................685526.2.2.36IS-95 MS Measured Channel Identity .................................................................................................685536.2.2.37Calling Party ASCII Number..............................................................................................................686546.2.2.38Layer 3 Information.............................................................................................................................689556.2.2.39Protocol Discriminator ........................................................................................................................690566.2.2.40Reserved-Octet ....................................................................................................................................690576.2.2.41Location Updating Type......................................................................................................................691586.2.2.42Authentication Confirmation Parameter (RANDC).............................................................................692596.2.2.43Location Area Identification................................................................................................................693606.2.2.44Reject Cause ........................................................................................................................................694616.2.2.45Authentication Challenge Parameter (RAND/RANDU/RANDBS/RANDSSD).................................69562

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6.2.2.46Authentication Response Parameter (AUTHR/AUTHU/AUTHBS) ...................................................69616.2.2.47Authentication Parameter COUNT......................................................................................................69726.2.2.48Message Waiting Indication ................................................................................................................69836.2.2.49Progress Indicator................................................................................................................................69946.2.2.50 Signal..................................................................................................................................................70156.2.2.51CM Service Type.................................................................................................................................70566.2.2.52Called Party BCD Number ..................................................................................................................70676.2.2.53Calling Party BCD Number.................................................................................................................70986.2.2.54Quality of Service Parameters .............................................................................................................71196.2.2.55Cause Layer 3 ......................................................................................................................................712106.2.2.56Forward Burst Radio Info....................................................................................................................716116.2.2.57Reverse Burst Radio Info ..