To Monitor the Alarm State of FMM-SP

ZXMSG 9000Media GatewayProduct Description Manual

Version 1.0.05

ZTE CORPORATION

ZTE Plaza, Keji Road South,

Hi-Tech Industrial Park,

Nanshan District, Shenzhen,

P. R. China

518057

Tel: (86) 755 26771900

Fax: (86) 755 26770801

URL: http://ensupport.zte.com.cnE-mail: support@zte.com.cn

LEGAL INFORMATION

Copyright 2008 ZTE CORPORATION.

The contents of this document are protected by copyright laws and international treaties. Any reproduction or distribution of this document or any portion of this document, in any form by any means, without the prior written consent of ZTE CORPORATION is prohibited. Additionally, the contents of this document are protected by contractual confidentiality obligations.

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ZTE CORPORATION or its licensors may have current or pending intellectual property rights or applications covering the subject matter of this document. Except as expressly provided in any written license between ZTE CORPORATION and its licensee, the user of this document shall not acquire any license to the subject matter herein.ZTE CORPORATION reserves the right to upgrade or make technical change to this product without further notice.Users may visit ZTE technical support website http://ensupport.zte.com.cn to inquire related information.The ultimate right to interpret this product resides in ZTE CORPORATION.

Revision History

DateRevision No.Serial No.Reason for Issue

Oct. 06, 2008R1.0sjzl20084045Version update

ZTE CORPORATION

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This page is intentionally blank.Contents

iAbout This Manual

PurposeiIntended AudienceiWhat Is in This ManualiRelated DocumentationiiConventionsiiHow to Get in TouchiiiDeclaration of RoHS CompliancevChapter 11Product Description1Overview1Background2Standard Compliance3Product Features6Product Functions7Product Networking9PSTN and Tandem Office Optimization and Transformation13PSTN Toll Distribution15Large-Capacity Integrated Gateway Office Transformation17Constructing NGN Broadband Signaling Network18Typical SG Configuration21Central Control Unit21Signaling Service Processing Unit22Signaling Link Access Unit (with Clock)23Signaling Link Access Unit (Without Clock)24Typical MG Configuration25Central Control Unit25Central T-Net Unit26VOIP and Trunk Unit (BUSN1 or BUMA1)27Kilomega General Trunk Unit28Analog Signaling and Trunk Unit (BUSN1)29Typical AG Configuration30Central Control Unit31Slave Control Unit32Central T-Net Switching Unit33Universal Service Trunk Unit (BUSN)34Kilomega General Service Resource Unit35Switching Module (SM8C)36Subscriber Unit (SU960N)39Subscriber Unit (SU480I)39Instance Introduction40Actual Requirements40Networking Analysis41Configuration Implementation41Application Features44Chapter 245Product Description of ZXMSG 9000 MT6445Overview45Product Features45Product Functions47Product Networking47System Configuration48Chapter 351Product Description of ZXMSG 9000 MT25651Overview51Product Features51Product Functions53Product Networking54TG Single-frame Configuration56TG Dual-frame Configuration58Interior SG Configuration of Single-frame TG59Interior SG Configuration of Dual-frame TG61Glossary63Definitions63Acronyms and Abbreviation68Figures71Tables73Index75

This page is intentionally blank.

About This ManualPurpose

Thank usersfor choosing the ZXMSG 9000 Media Gateway developed by ZTE Corporation (hereinafter referred to as ZTE).With the development of the IP technology and sharp increase of the Internet accesses, massive subscribers are connected to the data network through the Switch Circuit Network (SCN). The telecom network is under evolution from the SCN to the Packet Based Network (PBN). The amalgamation of SCN and PBN is the inevitable trend. With the speedy development of the VoIP technology, the data network through VPN makes thousands of customers and user groups virtually utilize the SCN infrastructure to lead the data network operators into the voice market. Therefore, the network architecture that takes IP as the switch core and softswitch as the control core inevitably leads the development direction of the next generation network (NGN).The ZXMSG 9000 is a network product on both verges of the PSTN network in SCN mode and the Softswitch PBN, adopting the standard adaptation layer protocols and transport layer protocols of Softswitch to obtain the data intercommunication between the two networks.This manual provides the detailed descriptions of the ZXMSG 9000 and its series, including ZXMSG 9000 MT64 and ZXMSG 9000 MT256.Intended Audience

This manual is intended for engineers and technicians who perform operation activities on the ZXMSG 9000.

What Is in This Manual

This manual contains the following chapters:

Table 1 Chapter Summary

ChapterSummary

Chapter 1 Product DescriptionThis chapter describes the ZXMSG 9000.

Chapter 2 Product Description of ZXMSG 9000 MT64This chapter describes the ZXMSG 9000 series product ZXMSG 9000 MT64.

Chapter 3 Product Description of ZXMSG 9000 MT256This chapter describes the ZXMSG 9000 series product ZXMSG 9000 MT256.

Related Documentation

The following documentation is related to this manual:

ZXMSG 9000 (V1.0.05) Media Gateway System Description Manual ZXMSG 9000 (V1.0.05) Media Gateway Hardware Description Manual-MT256 Volume

ZXMSG 9000 (V1.0.05) Media Gateway Hardware Installation Manual-MT256 Volume ZXMSG 9000 (V1.0.05) Media Gateway Hardware Description Manual-9000 Volume

ZXMSG 9000 (V1.0.05) Media Gateway Hardware Installation Manual-9000 Volume

ZXMSG 9000 (V1.0.05) Media Gateway Hardware Description Manual-MT64 Volume

Conventions

Typographical ConventionsZTE documents employ the following typographical conventions.Table 2 Typographical ConventionsTypefaceMeaning

ItalicsReferences to other Manuals and documents.

QuotesLinks on screens.

BoldMenus, menu options, function names, input fields, radio button names, check boxes, drop-down lists, dialog box names, window names.

CAPSKeys on the keyboard and buttons on screens and company name.

Constant widthText that userstype, program code, files and directory names, and function names.

[ ]Optional parameters.

{ }Mandatory parameters.

|Select one of the parameters that are delimited by it.

Note: Provides additional information about a certain topic.

Checkpoint: Indicates that a particular step needs to be checked before proceeding further.

Tip: Indicates a suggestion or hint to make things easier or more productive for the reader.

Mouse Operation ConventionsTable 3 Mouse Operation ConventionsTypefaceMeaning

ClickRefers to clicking the primary mouse button (usually the left mouse button) once.

Double-clickRefers to quickly clicking the primary mouse button (usually the left mouse button) twice.

Right-clickRefers to clicking the secondary mouse button (usually the right mouse button) once.

DragRefers to pressing and holding a mouse button and moving the mouse.

How to Get in Touch

The following sections provide information on how to obtain support for the documentation and the software.

Customer Support

If having problems, questions, comments, or suggestions regarding your product, contact us by e-mail at support@zte.com.cn. Users can also call our customer support center at (86) 755 26771900 and (86) 800-9830-9830.

Documentation Support

ZTE welcomes your comments and suggestions on the quality and usefulness of this document. For further questions, comments, or suggestions on the documentation, users can contact us by e-mail at doc@zte.com.cn; or userscan fax your comments and suggestions to (86) 755 26772236. Userscan also browse our website at http://support.zte.com.cn, which contains various interesting subjects like documentation, knowledge base, forum and service request.This page is intentionally blank.Declaration of RoHS ComplianceTo minimize the environmental impact and take more responsibility to the earth we live, this document shall serve as formal declaration that the ZXMSG 9000 Media Gateway manufactured by ZTE CORPORATION are in compliance with the Directive 2002/95/EC of the European Parliament - RoHS (Restriction of Hazardous Substances) with respect to the following substances:

Lead (Pb)

Mercury (Hg)

Cadmium (Cd)

Hexavalent Chromium (Cr (VI))

PolyBrominated Biphenyls (PBBs)

PolyBrominated Diphenyl Ethers (PBDEs)

This declaration is issued based on our current level of knowledge. Since conditions of use are outside our control, ZTE CORPORATION makes no warranties, express or implied, and assumes no liability in connection with the use of this information.This page is intentionally blank.

Chapter 1Product DescriptionOverviewIntroduction

This chapter describes the ZXMSG 9000 product description.Contents

This chapter consists of the following topics.

TopicPage No.

Background

Standard Compliance

Product Features

Product Functions

Product Networking

Transformation" Traditional PSTN Transformation and Optimization XE "Optimization" End Office

10

Transformation or Construction10

Transformation" PSTN and XE "Optimization" Tandem Office Optimization and Transformation

13

PSTN Toll Distribution15

Capacity" Large-Capacity Integrated XE "Integrated" Gateway Office Transformation XE "Transformation"

17

NGN" Constructing NGN Broadband Signaling XE "Signaling" Network

18

SG" Typical SG Configuration

Control" Central Control Unit

21

Signaling" Signaling Service Processing Unit

22

Signaling" Signaling Link Access Unit (with Clock XE "Clock" )

23

Signaling" Signaling Link Access Unit (Without Clock)

24

SG" Typical MG Configuration

25

Control" Central Control Unit

25

Central T-Net Unit26

Trunk" VOIP and Trunk Unit (BUSN1 or BUMA1)

27

Kilomega General Trunk Unit28

Signaling" Analog Signaling and Trunk XE "Trunk" Unit (BUSN1)

29

Typical AG Configuration

Central Control Unit31

Slave Control Unit32

Central T-Net Switching Unit33

Universal Service Trunk Unit (BUSN)34

Kilomega General Service Resource Unit35

Switching Module (SM8C)36

Subscriber Unit (SU960N)39

Subscriber Unit (SU480I)39

Instance Introduction

Actual Requirements40

Networking Analysis41

Configuration Implementation41

Application Features44

BackgroundIntroduction

With the development of the IP technology and sharp increase of the Internet accesses, massive subscribers are connected to the data network through the SCN. The telecom network is under evolution from SCN to PBN. The amalgamation of SCN and PBN is the inevitable trend. With the speedy development of the VoIP technology, the data network through VPN makes thousands of customers and user groups virtually utilize the SCN infrastructure to lead the data network operators into the voice market. Therefore, the network architecture that takes IP as the switch core and softswitch as the control core could inevitably direct the NGN development.The ZXMSG 9000 is a network product on both verges of the PSTN network in SCN mode and the Softswitch PBN, adopting the standard adaptation layer protocols and transport layer protocols of Softswitch to obtain the data intercommunication between the two networks.Standard ComplianceIntroduction

The compliant standards are listed in Table 4.Table 4 Compliant Standards StandardDescription

ITU-T G.703The Physical/ XE "Physical" Electrical Characteristics of series of Digital XE "Digital" Interfaces

ITU-T G.707Network Node Interface XE "Interface" for Synchronous Digital XE "Digital" Hierarchy (SDH)

ITU-T G.708SubSTM-0 Network Node Interface XE "Interface" for SDH

ITU-T G.711Pulse Code Modulation of Voice XE "Voice" Frequencies

ITU-T G.723.1Dual Rate Speech Coder Standard from Multimedia Communication at 5.3 Kbit/s and 6.3 Kbit/s

ITU-T G.728Coding XE "Coding" of Speech at 16 kbit/s Using Low Delay code Excited Linear Prediction

ITU-T G.729Coding XE "Coding" of Speech at 8 kbit/s using Conjugate-Structure XE "Structure" Algebraic-Code-Excited Linear-Prediction (CS-ACELP)

ITU-T G.783Characteristics of the SDH Equipment Function XE "Function" Set

ITU-T G.957Optical Interface XE "Interface" for the SDH Related Equipment and System XE "System"

ITU-T G.964V-Interfaces at the Digital XE "Digital" Local Exchange (LE) - V5.1-Interface XE "Interface" (based on 2 Mbits/s) for the Support of Access Network

ITU-T G.965V-Interfaces at the Digital XE "Digital" Local Exchange (LE) - V5.2-Interface XE "Interface" (based on 2 Mbits/s) for the Support of Access Network

ITU-T H.248 XE "H.248" Media XE "Media" Gateway Control XE "Control" Protocol XE "Protocol"

ITU-T I.432B-ISDN User-Network Interface XE "Interface" Physical XE "Physical" Layer Specification

ITU-T Q.703Signal Link (MTP2)

ITU-T Q.714Signaling XE "Signaling" Connection Control XE "Control" Part (SCCP)

ITU-T Q.764ISDN User Part (ISUP)

ITU-T Q.724Telephone User Part (TUP)

ITU-T Q.920ISDN User-network XE "network" Interface XE "Interface" Data Link Layer - General Aspects

ITU-T Q.921Specifications for the ISDN User-network XE "network" Interface XE "Interface" Data Link Layer

ITU-T T.30Procedures for Document Facsimile Transmission in the General Switched Telephone Network

ITU-T T.38An ITU recommendation for sending fax messages over IP networks in real-time situation.

RFC0768UDP Protocol XE "Protocol"

RFC0791IP XE "IP" Protocol XE "Protocol"

RFC0792INCMP Protocol XE "Protocol"

RFC0793TCP Protocol XE "Protocol"

RFC0796Address Mapping

RFC0854TELNET Protocol XE "Protocol"

RFC0855Telnet Protocol XE "Protocol" Option Specifications

RFC0858Telnet Suppress Go Ahead Option

RFC0894Standard for Transmission of IP XE "IP" Packets over Ethernet Network

RFC0896Congestion Control XE "Control" in the TCP/IP XE "IP" Internet

RFC1058Routing Information Protocol XE "Protocol"

RFC1155Structure XE "Structure" and Identifier of TCP/IP XE "IP" based Internet Management Information

RFC1157Simple Network Management Protocol XE "Protocol" (SNMP)

RFC1213TCP/IP XE "IP" Based Internet Network Management Information Base

RFC1242Benchmarking Terminology for Network Interconnection Devices

RFC1253OSPF v2 Management Information Base

RFC1254Gateway Congestion Control XE "Control" Survey

RFC1256INCMP Router Discovery Messages

RFC1483Multi-protocol Encapsulation over ATM Adaptation Layer 5 (AAL5)

RFC1583OSPF v2

RFC1584Multicast Extensions to OSPF v2

RFC1619PPP over SONET/SDH

RFC1661The Point-to-Point Protocol XE "Protocol" (PPP)

RFC1662PPP in HDLC

RFC1723RIP v2 Protocol XE "Protocol"

RFC1724RIP v2 MIB Extension

RFC1889RTP: A Transport Protocol XE "Protocol" for Real-Time Applications

RFC1890RTP Profile for Audio and Video Conferences with Minimal Control XE "Control"

RFC2285Benchmarking Terminology for LAN Switching Devices

RFC2615PPP over SONET/SDH

RFC2705Media XE "Media" Gateway Control XE "Control" Protocol XE "Protocol" (MGCP) Version 1.0

RFC2805Media XE "Media" Gateway Control XE "Control" Protocol XE "Protocol" Architecture XE "Architecture" and Requirements

RFC3015MEGACO Protocol XE "Protocol" Version 1.0

YD/N 0341997ISDN user-Network Interface XE "Interface" Specifications

YD/N 065-1997General Technical Specifications for Telephone Switching Equipment (Released by Ministry of Posts and Telecommunications)

YD/N 0671997Technical Specifications for ATM Switch

YD/N 0991998SDH Technical System XE "System"

YD/N 106.11999Technical Specifications for ATM-based Multimedia Broadband Backbone Network-addressing and Signaling XE "Signaling" Part

YD/T 1044-2000General Technical Specifications for IP XE "IP" telephone/fax Services

YD/T 1046-2000Technical Specifications for IP XE "IP" Telephone Gateway Interconnection

YD/T 1045-2000Technical Specifications for Network Access Server

YD/T 1071-2000Technical Specifications for IP XE "IP" Telephone Gateway Device

YDC 0032001General Technical Specifications for SoftSwitch XE "Softswitch" Device

YD/T 1127-2001Technical Specifications for SS7 and IP XE "IP" Interconnection

Product FeaturesRich functionsThe ZXMSG 9000 can function as the Trunk Gateway (TG), Signaling Gateway (SG), Access Gateway (AG), media server, and TDM switch, supporting the primary services of traditional PSTN and NGN in terms of the voice, VOIP, fax, MODEM and so on. Large capacity and high density

Maximum accesses: 330,000 trunks or 160,000 trunks + 160,000 VOIP or 800,000 subscribers The 256 K TDM full switch is supported, meeting congestion-free switch requirements of users. This system supports connection between two TDM. This system works under SoftSwitch frame with simplified function and high density. When IPS capacity reaches 960, system maximum capacity DT + VOIP can reaches 250 thousand or 800 thousand users.Flexible networking The 3G platform architecture developed by ZTE and the multi-module design with tight coupling can be widely used in the existing PSTN, NGN, 3G, and integrated application networks. The ZXMSG 9000 can work as a TG or AG in the NGN network. It also can be used in the tandem/toll/gateway office and C5 local exchange. The Hairpin function is supported, reducing the VOIP ports effectively. The virtual gateway function is supported. The media gateway can be divided into multiple logical gateways, working as the gateway office connecting various operators or networks.Rich interfacesMultiple interfaces are provided, including the E1, T1, STM-1, GE, FE, and BITS series. Rich protocols supported

The following protocols are supported: SS7, SCCP, M3UA, M2UA, M2PA, SCTP, V5.2, PRI, BRI, SUA, V5UA, IUA, H.248 and CAS.

Powerful NM functions introductionThe EMS NM system is applied. Smooth transitionThe central module is replaced by the ZXMSG9000 and being connected to the original peripheral modules such as PSM. Controlled by the Softswitch via the H.248 protocol, the smooth transition of the switch to NGN can be realized.Product FunctionsIntroduction

As a new generation integrated media XE "media" gateway XE "gateway" , the ZXMSG 9000 has powerful functions. It can serve as a TG, an AG XE "AG" and an SG XE "SG" or a combination of them. It can be used in local office XE "office" , toll office, integrated gateway office and the 3G XE "3G" network XE "network" . Details are given as follows.

Independent XE "Independent" TGThe ZXMSG 9000 can serve as a Trunk GatewayTGto connect the PSTN network XE "network" to the IP XE "IP" core network through the trunk line, converting the voice/fax on the PSTN/ISDN trunk side to that on the IP network side. In the next-generation SoftSwitch XE "Softswitch" network, the ZXMSG 9000 works with SG XE "SG" to provide the functions of C4 tandem office XE "office" and toll office in the existing fixed PSTN/ISDN.Independent XE "Independent" AGAs an Access GatewayAG, it is responsible for connecting analog Z interface, ISDN users, V5.2 users and DSL users to the IP XE "IP" network XE "network" and converting the voice/fax on the analog user side to that on the IP network side, under the control of the SoftSwitch control device. It is applicable to the access layer or C5 end office XE "office" , implementing the user access function. The ZXMSG 9000 can provide multiple physical interfaces such as POTS, AT, BRI/PRI, E1/T1, V5.2, STM-1, STM-4, OC-3 and OC-12. The ZXMSG 9000 supports the following applications: By subscriber type: Analog subscriber line access ISDN user access V5 user access Broadband subscriber access , including ADSL and ADSL2+ subscribers By access mode: Traditional PBX access Standard V5.2 access network XE "network" access WLL user access Pure narrow band subscriber unit RSU/RLM accesses, including SU960, SU960N, SU480I, SU480E, RSUC and RSUD Access of integrated access unit in U300 mode Remote/Local module accesses such as SM16, SM8, SM8C and SM4CIndependent XE "Independent" SGThe ZXMSG 9000 can serve as an independent SG (Signal Gateway) XE "SG" , which is located on the edge between the traditional SS7 network XE "network" in circuit switching mode and the packet switching network. It is a gateway XE "gateway" at the edge layer of the SoftSwitch system, which can efficiently implement the signaling interconnection between the circuit switching network and packet network. As an SG, the ZXMSG 9000 has powerful functions, including the following: Supporting complete SS7 MTP message processing and network XE "network" management function in the SCN. Supporting STP Supporting IETF SIGTRAN signaling adaptation protocols including M3UA, M2PA, IUA and V5UA. Supporting the flow control transport protocol (SCTP) of IETF and real-time and reliable transmission of signaling messages. Supporting multiple SS7 networks and independent signaling transmission of each SS7 network XE "network" . Integrated media XE "media" gatewayThe ZXMSG 9000 can provide TG, AG XE "AG" and SG XE "SG" functions simultaneously. TDM XE "TDM" switchIt can serve as a TDM XE "TDM" switch. To meet the requirement for being upgraded to the NGN XE "NGN" , it can be smoothly upgraded to be a media XE "media" gateway XE "gateway" in the NGN.Integrated XE "Integrated" Gateway XE "gateway" OfficeThe ZXMSG 9000 provides complete application functions of integrated gateway XE "gateway" office XE "office" .MGW XE "MGW" in the 3G XE "3G" NetworkThe ZXMSG 9000 can be upgraded to be an MGW XE "MGW" in the 3G XE "3G" network XE "network" through version upgrade.Hair-pin FunctionThe hair-pin function in the TG or AG mode is supported.Hair-pin function: refers to the direct exchange function of the TG and AG circuits. For instance, if two users of the same AG talk to each other, two RTP ports shall be used. Since ZXMSG 9000 has the Hair-pin function, AG directly adds two user circuit terminals to a context under the control of SS. No VOIP resources are to be occupied.Virtual Gateway FunctionThe ZXMSG 9000 media gateway supports to function as multiple logical gateways.SS7 Emergency FunctionThe SS7 emergency function is supported. If the NGN network is interrupted, this function provides the path to access the PSTN and network robustness.Product NetworkingDescriptionThe ZXMSG 9000 integrated media XE "media" gateway XE "gateway" is applicable to different NGN XE "NGN" networking requirements. The application environment involves:

Traditional PSTN transformation and optimizationEnd office XE "office" transformation or constructionFor the transformation or construction of a large-capacity PSTN end office XE "office" with a designed capacity of more than 40,000 subscriber lines, it is recommended to use the ZXMSG 9000 under the control of the SoftSwitch.

Traditional PSTN transformation and optimizationTandem office XE "office" transformation or constructionFor the transformation or construction of large-capacity toll and tandem PSTN offices, the ZXMSG 9000 can be used under the control of the SoftSwitch to implement the evolvement and integration towards the NGN XE "NGN" . The ZXMSG 9000 provides a capacity of up to 336,000 ports, which can satisfy the toll and tandem capacity requirements of international carriers Traditional PSTN transformation and optimizationIP XE "IP" toll network XE "network" construction

IP XE "IP" toll network XE "network" application: under the control of the SoftSwitch, the ZXMSG 9000 can be used to construct IP-based toll voice networks and offer toll voice services over the IP network Large-capacity integrated gateway XE "gateway" office XE "office" transformation or construction.Under the control of the Softswitch Control Equipment, the ZXMSG 9000 can be used to establish the integrated NGN gateway office, replacing or building the integrated great-capacity gateway offices of current carriers. Constructing NGN XE "NGN" broadband signaling networks

3G XE "3G" core network XE "network" applicationTraditional PSTN Transformation XE "Transformation" and Optimization XE "Optimization" End Office This section describes traditional PSTN transformation and optimization-End office.

Transformation or ConstructionThe leading policy for the evolvement of the traditional fixed network XE "network" to NGN XE "NGN" is based on the network transformation and optimization. The hierarchical plane is integrated with the NGN to complete the final NGN evolvement.

1.Analysis on existing PSTN

The structure of the existing PSTN is shown in Figure 1.Figure 1 Existing PSTN Network

In the traditional PSTN, there is large number of end offices, and the various types of devices are used. Moreover, big differences exist in service provisioning, and there are large number of tandem office XE "office" with small capacity, and most of the offices are end offices or tandem offices, so the network XE "network" structure is complicated, the resource usage rate and network operation efficiency are low, and it is difficult to manage the network.As the end office XE "office" in the existing PSTN does not support SSP, from the perspetive of offering intelligent services; to trigger the intelligent service is not so easy because circuits are complicated. Traditional intelligent services are triggered in DP3 mode, which is the unique trigger mode.The service attributes of the called intelligent services such as simultaneous ringing and ring-back tone services are related to the called party, the intermediate connection switch cannot obtain the service attributes. In this case, the called intelligent services cannot be offered rapidly in the whole network XE "network" . For calling intelligent services, the end office cannot trigger the intelligent services without access codes. As a result, it is difficult to offer such services as fixed prepaid service.2.Optimization XE "Optimization" and Evolvement Networking SolutionUsing the SoftSwitch technology to make the PSTN smoothly evolve to the NGN XE "NGN" is the best solution for the optimization and transformation of the existing PSTN.The SoftSwitch and gateway XE "gateway" can be used to reconstruct the C5 end office XE "office" . The SoftSwitch network XE "network" and PSTN form an overlay network. With the integrated access capability, the media XE "media" gateway provided by ZTE can go downstream through twisted pair, V5 access network and remote modules. In this way, the access resources of the existing PSTN can be fully used to provide access for users. In addition, the media gateway can provide both data and voice integrated access applications for users. Figure 2 shows the optimization solution of the PSTN end office.Figure 2 Optimization Solution of PSTN End Office

End office XE "office" 1 in Figure 2 is an end office to be reconstructed. The ZXMSG 9000 integrated media XE "media" gateway XE "gateway" is used for the reconstruction. The ZXMSG 9000 is connected to the SoftSwitch network XE "network" through FE/GE, and it provides multiple downlink access modes such as POTS, V5, E1 or MSTP to support integrated access of voice, ISDN and DSL services. The access resources of the original end office can be fully used to implement the user access.The toll tandem services of the reconstructed end office XE "office" are interconnected to the PSTN toll or tandem office through the trunk media XE "media" gateway XE "gateway" (ZXMSG 9000) and SG XE "SG" in the NGN XE "NGN" .When the ZXMSG 9000 new generation integrated gateway XE "gateway" is used in an end office XE "office" , it has the following features: The ZXMSG 9000 supports both IP XE "IP" and TDM XE "TDM" modes. In addition, it supports an access capacity of 40,000~1,000,000 subscriber lines, multi-module networking, all modules and units of the switch, and all internal networking modes of the switch. At the downlink user side, it supports POTS, ADSL and ISDN user interfaces, remote subscriber unit and remote module, and the E1 and MSTP networking modes that the switch supports. In addition, it can provide SNB (built-in SDH) and ODT (built-in PDH) and support levels 2~4 internal networking modes. This makes it easy to transform the local network XE "network" of multi-module and multi-unit office XE "office" of the PSTN switch of the peer office. The ZXMSG 9000 supports user access through the V5 access network XE "network" device and supports remote subscriber unit with integrated services. In addition, it provides broadband user interfaces such as ADSL. Supporting the built-in SG XE "SG" , multiple narrowband signaling such as SS7, V5 and R2, and the SIGTRAN XE "SIGTRAN" protocol. When the communication between the gateway XE "gateway" and the central SS is interrupted, the gateway can implement the self-switching function. It is designed based on the new generation universal platform, so it can be smoothly upgraded to be a mobile MGW XE "MGW" , and the integration of the current network XE "network" and the mobile NGN XE "NGN" can be implemented.PSTN XE "Transformation" and XE "Optimization" Tandem Office Optimization and TransformationIntroduction

In the traditional PSTN, there are a large number of end offices, and the devices are diverse. Moreover, big differences exist in service provisioning, and it is difficult to offer intelligent services. To solve these problems, the NGN XE "NGN" gateway XE "gateway" access solution can be used in the end offices. However, there are a large number of end offices and the solution is implemented step by step. During the early phase of the network XE "network" evolvement, only some end offices can be optimized and transformed. Another problem is how to seamlessly switch over the users of the untransformed end office XE "office" with old device to the NGN and provide NGN services for them.

It is recommended to use the tandem office XE "office" optimization and transformation solution during network XE "network" transformation and optimization. Use the trunk media XE "media" gateway XE "gateway" in the existing tandem office, place media gateway in the existing tandem office to optimize and transform the tandem office, and connect the old network device in the end office to the trunk gateway. The trunk gateway provides the functions of the tandem office. To construct a new PSTN tandem office, use the NGN XE "NGN" trunk media gateway.The transformed tandem office XE "office" and end office are connected to the SoftSwitch system through the ISUP trunk mode. The access network XE "network" is connected to the tandem office through the V5 trunk. If the original tandem office is directly connected to some users, these users can be connected through the access unit attached to the trunk media XE "media" gateway XE "gateway" . The new services of the original end office users and access network users are triggered on the TG of the tandem office, and are provided by the SoftSwitch in a unified mode.

For new users, new media XE "media" gateway XE "gateway" can be used to implement the related access according to the resources of the local network XE "network" .

The recommended networking solution is shown in Figure 3.Figure 3 Optimization Solution of Tandem Office

For the transformation and construction of large-capacity tandem offices, the ZXMSG 9000 can be used for the networking. Presently, the capacity of tandem offices in the fixed network XE "network" of the traditional domestic fixed network carriers is generally 30,000~100,000 trunks. In general, new large-capacity tandem offices requires a capacity of up to 100,000~150,000 trunks. The ZXMSG 9000 can provide up to 336,000 ports, therefore, it can completely satisfy the requirement for large-capacity tandem office XE "office" .

Using the ZXMSG 9000 to transform or construct a tandem office XE "office" and implement the evolvement from the PSTN to NGN XE "NGN" has many advantages.

The PSTN and NGN XE "NGN" can be fully integrated. The users of the old end office XE "office" can enjoy NGN services. The mixed number allocation can be implemented for PSTN users and NGN users. In this way, the existing investment is fully protected. The data management and service provisioning for the users of old end offices are supported by the SoftSwitch. In this way, there is no need to transform the peer office XE "office" , and the users can use various intelligent services and value-added services provided by the SoftSwitch service platform. This reduces the transformation cost and work load. The ZXMSG 9000 can support TDM XE "TDM" switching. The calls between the end offices do not have to pass through the IP XE "IP" bearer XE "bearer" network XE "network" . This reduces the load of the IP bearer network.

The ZXMSG 9000 can serve as a combined TG/AG XE "AG" , which can be used in both end and tandem offices. It can directly provide integrated data and voice access for users through POTS, ADSL and ISDN user interfaces, or implement the user access through remote modules or units. In addition, it can connect the original access network XE "network" users to the SoftSwitch network through the V5 access. The ZXMSG 9000 provides TDM XE "TDM" uplink channels. During the early phase of the NGN XE "NGN" , it can provide TDM toll tandem backup channel.PSTN Toll DistributionIntroduction

With the increase of provincial/inter-provincial toll services of the PSTN and aging of the device of toll exchanges, PSTN toll offices are extended and reconstructed. Based on the rich broadband backbone data network XE "network" resources of the carrier, the SoftSwitch can be used to distribute toll services and optimize or transform the existing PSTN toll network, thus making the network evolve into the NGN XE "NGN" step by step.

With the SoftSwitch technology, the PSTN tandem office XE "office" toll traffic solution based on the IP XE "IP" data network XE "network" can be offered for traditional fixed network carriers. The PSTN toll TDM XE "TDM" media XE "media" streams are converted into IP media streams through the TG, and sent to the opposite TG specified by the core device through the IP broadband data network. The opposite TG converts the IP toll media streams into trunk media streams at the circuit side.For the network XE "network" of the whole country, multiple softswitching areas can be established with the province or large area as the unit. The toll services between softswitching areas can be implemented through the interconnection of two SoftSwitch systems. The toll services within provinces or large areas are controlled by the corresponding SoftSwitch independently. Figure 4 shows the networking solution of IP toll distribution.Figure 4 Networking Solution of IP Toll Distribution

The SoftSwitch core control device ZXSS10 SS1b located in the province (large area) to which city A belongs implements the call control, signaling processing, voice routing, protocol adaptation, service agent and CDR file generation for the users of the province (large area). The TG implements the media XE "media" interconnection between the PSTN and packet switching network XE "network" . The SG XE "SG" implements the SS7 interconnection between the PSTN and packet switching network. The H.248 XE "H.248" protocol is used as the control protocol between the SoftSwitch and the TG. The SIGTRAN signaling is used between the SoftSwitch and the SG.In comparison to the traditional TDM XE "TDM" technology, the SoftSwitch technology has many advantages. In the PSTN construction, local network XE "network" , tandem office XE "office" , toll office, signaling network and synchronization network are constructed. However, for the SoftSwitch system, only lump sum investment is required. The NEs of the SoftSwitch system cover less area than the PSTN device. This greatly reduces the investment and area of the equipment room, and the engineering is more convenient and economical. In the subsequent network XE "network" construction, the equipment room construction and maintenance & management require less supplemental investment. Through the SoftSwitch technology, the second toll network XE "network" can be constructed easily, which can work with the original toll network in distribution or backup mode to ensure reliable operation of the toll network.For traditional fixed network XE "network" carriers, the capacity of their toll offices is generally up to 50,000~100,000 trunks. It is recommended to use the ZXMSG 9000 as the TG. The ZXMSG 9000 supports up to 336,000 ports, therefore, it can completely satisfy the requirement for large capacity.Large-Capacity XE "Capacity" Integrated XE "Integrated" Gateway Office Transformation XE "Transformation" Introduction

The traditional gateway XE "gateway" office XE "office" is constructed to meet the operation needs under the multi-operator environment and to meet the needs of users for freely selecting network XE "network" channels to conduct calls and the requirement for inter-network interconnection. The traditional TDM XE "TDM" gateway office construction focuses on improving the usage of trunks and TDM resources and providing unified inter-network maintenance and management, convenient inter-network settlement and network planning. This idea is basically the same as that of PSTN local network construction.Currently, carriers are being urged to know how to adapt the development of fixed NGN XE "NGN" , provide interconnected NGN services, interconnect with the device in the existing network XE "network" and the NGN to be constructed, and to implement the integration of trunk switching and future 3G XE "3G" services.Figure 5 Replacement and Building of Integrated Gateway Office

As shown in Figure 5, the functions of the second gateway XE "gateway" office XE "office" are implemented through the core control device and the ZXMSG 9000 integrated media XE "media" gateway. In this solution, it is only required to add ZXMSG 9000s in the cities and use a SoftSwitch XE "Softswitch" as the core control device. The newly added MSG9000 can be connected directly through E1 to the networks of the carriers such as China Telecom, China Mobile and China Unicom, and can share some traffic of the original gateway office according to actual requirements. To implement this solution, it is only required to configure data in the tandem office. The ZXMSG 9000 integrated media gateway can implement the functions of the end, tandem and toll offices simultaneously. For further increase in users, during the engineering of capacity extension of the end and tandem offices, the SoftSwitch+MSG9000+remote (near) module can be used to implement the function of traditional PSTN end office. The ZXMSG 9000 can interconnect with the end office through the ISUP trunk mode, and interconnect with the access network XE "network" through the V5 trunk. In this way, the functions of the tandem office can be implemented. This solution also supports toll exchange functions. The ZXMSG 9000 converts all the traffic media that need to be transmitted to other cities into IP XE "IP" packets, and sends them to the specified opposite gateway office through the data network. Then the opposite gateway office converts the IP packets into media streams at the circuit side, and sends them to the specified gateway office of other carriers. In this solution, the toll traffic distribution is implemented through the IP network; therefore, it greatly reduces the transmission load of PSTN toll offices.Constructing NGN XE "NGN" Broadband Signaling XE "Signaling" NetworkIntroduction

The ZXMSG XE "ZXMSG" 9000 can serve as an independent SG XE "SG" used to construct an IP XE "IP" -based NGN XE "NGN" . At the circuit switching network XE "network" side, the ZXMSG 9000 supports 64 Kbits/s and 2 Mbits/s signaling links, receives and transmits XE "transmits" standard SS7 messages. At the IP network side, it supports IETF M3UA, M2PA, SUA and SCTP protocols. The ZXMSG 9000 can be used to replace the LSTP/HSTP on one plane of the traditional signaling network.An IP XE "IP" -based broadband NGN XE "NGN" constructed using the SG XE "SG" of ZTE as shown in Figure 6.Figure 6 NGN IP Broadband Signaling Network

As an SG XE "SG" , the ZXMSG 9000 is located on the edge of the network XE "network" . On one side of the gateway XE "gateway" is the traditional SS7 link which is interconnected XE "interconnected" with the SP/STP device in the circuit switching network; on the other side of the gateway is the IP XE "IP" signaling link supporting M2PA/SCTP, which is connected to other SG or the new application device on the IP network such as SoftSwitch XE "Softswitch" to complete the signaling transfer function. In addition, the device can be connected to the SoftSwitch or APPServer through the M3UA/SCTP mode to fulfill the signaling access function. When the SG is located in a full-IP network, both sides use the IP SS7 link of the M2PA/SCTP to implement the transparent transmission of SS7 messages.The SG XE "SG" uses the SCTP protocol of IETF as the transmission layer protocol. One SCTP connection can contain multiple data streams of user-oriented messages. The data between different streams is transmitted independently and is not interfered each other. This reduces the transmission delay, avoids that some large data streams block other data, and ensures the flexibility and adaptability of the signaling message transmission. The SCTP protocol adopts the acknowledgement and retransmission (upon timeout) mechanism to ensure the transmission of user data without error and repeat. It supports sending multiple user messages bound in one data block, with high transmission efficiency. In addition, the SCTP protocol supports multiple IP XE "IP" channels in one connection. The setup of the connection involves the COOKIE mechanism of four handshakes. The label discrimination is used for the transmission of messages. This ensures high security of the IP signaling network XE "network" .With the access of the IP XE "IP" -based application server such as SoftSwitch XE "Softswitch" and APPServer, the signaling network XE "network" with the SG XE "SG" can provide the resource sharing of multiple services. When users accessed through various access modes use diversified services, they do not care which network the related service data is located. In this case, the integration of multiple services is implemented.The IP XE "IP" -based non-hierarchical signaling network XE "network" can reduce the number of signaling links, simplify the network structure, and reduce network construction costs and management costs.The new IP XE "IP" signaling network XE "network" can be used to bypass or distribute numerous signaling services of the circuit switching signaling network, and to ensure the stability of the original signaling network.In the case that the IP XE "IP" network XE "network" is widely applied, constructing an IP signaling network with the ZXMSG 9000 SG XE "SG" also benefit the evolvement from the existing signaling network to the NGN XE "NGN" . The process of network evolvement is shown in Figure 7.Figure 7 Process of Network Evolvement

The ZXMSG 9000 is applicable to diversified NGN XE "NGN" networking requirements, and is the mainstream large-capacity NGN gateway XE "gateway" product of ZTE. The ZXMSG 9000 applies to the following application environments:

1.The ZXMSG 9000 serves as a large-capacity AG XE "AG" . In transforming or constructing an end office XE "office" designed with a capacity of more than 40,000 subscriber lines, the ZXMSG 9000 can be used for networking to support a capacity of up to 1,000,000 subscriber lines.2.The ZXMSG 9000 serves as a large-capacity media XE "media" gateway XE "gateway" applying to the transformation or construction of a middle or large capacity toll or tandem office XE "office" . When the tandem office has up to 3000DS0 trunks, the ZXMSG 9000 can be used for networking to provide a capacity of up to 336,000 ports, and to satisfy the toll tandem capacity requirements of international carriers.3.The ZXMSG 9000 serves as a large-capacity gateway XE "gateway" office XE "office" . It can be used to transform or construct a large-capacity integrated gateway office to implement the interconnection of the network XE "network" of the carrier with other networks, and to implement the integration of the gateway office and tandem office.4.The ZXMSG 9000 serves as a large-capacity SG XE "SG" to implement the SS7 conversion from the TDM XE "TDM" network XE "network" to the IP XE "IP" network, and to satisfy the IP STP networking requirement.Typical SG XE "SG" ConfigurationIntroduction

When the ZXMSG 9000 serves as a large-capacity SG XE "SG" , the system supports a capacity of up to 6144 64 kbit/s signaling links. The large-capacity SG consists of central control unit, signaling service processing sub-rack and signaling link access sub-rack. The following describes the configuration of the SG taking an SG with a capacity of 6016 signaling links.Central Control XE "Control" UnitIntroduction

When the ZXMSG 9000 serves as a large-capacity SG XE "SG" , a central control unit is required. The central control unit is borne over the BCTC1 backplane, implementing the system control and signaling service processing. Figure 8 shows the slots of the central control unit of the large-capacity SG.Figure 8 Slots of Main Control Unit of Large-Capacity SG

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Large capacity SG central control unit consists of the following boards:OMPSystem XE "System" control management board. It implements the operation, maintenance and management of the whole system. Two OMP boards shall be configured in the system in active/standby mode. The OMP XE "OMP" board has two independent CPUs on it. One set is used with the hard disk as the OMP, and the other set is used without hard disk as the MCMP to process SS7. Each set of CPU processes 64 signaling links.RMPBAs rear plug-in board of OMP XE "OMP" , it provides interfaces to the background, 485 interface XE "Interface" and 232 debugging and management interface. It is used along with the OMP.MUIMCIt is universal XE "Universal" interface module at the BUSN XE "BUSN" layer. There is no T network XE "TDM" or MTFI interface. Two Ethernets are connected together.RUIM2 and RUIM3 Rear plug-in boards of MUIMCMIPI IP XE "IP" network XE "network" interface board.

RMNIC Rear plug-in board of MNICMCMP One set of CPU processes 64 signaling links, and one pair of MCMP boards process 128 signaling links.MCHUBControl XE "Control" plane interconnection hub. It implements the control plane interconnection between other unit and the central control unit.RCHB1 and RCHB2 They provide 24 and 22 FE interfaces respectively.Signaling XE "Signaling" Service Processing UnitIntroduction

When the ZXMSG 9000 serves as a large-capacity SG XE "SG" , seven secondary control units are required. The secondary control units are borne over the BCTC2 backplane, implementing the signaling service processing function. Figure 9 shows the slots of the signaling service processing unit of the large-capacity SG.Figure 9 Slots of Signaling Service Processing Unit of Large-Capacity SG1234567891011121314151617

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Signaling Service Processing Sub-rack consists of the following boards:MUIMC

It is universal XE "Universal" interface module at the BUSN XE "BUSN" layer. There is no T network XE "TDM" or MTFI interface. Two Ethernets are connected together.RUIM2 and RUIM3Rear plug-in boards of MUIMC.MIPIIP XE "IP" network XE "network" interface board. (In the configuration, only 1~2 FEs are needed)RMNICRear plug-in board of MNIC.

MCMP: One set of CPU processes 64 signaling links, and one pair of MCMP boards process 128 signaling links.Signaling XE "Signaling" Link Access Unit (with Clock XE "Clock" )Introduction

When the ZXMSG 9000 serves as a large-capacity SG XE "SG" , one signaling link access unit (with clock) borne over the BUSN3 backplane is needed, to implement the signaling service processing function. Figure 10 shows slots of the signaling link access unit (with clock).Figure 10 Slots of Signaling Link Access Unit (with Clock)1234567891011121314151617

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The signaling link access unit (with clock) consists of the following boards:MUIMUIt is universal XE "Universal" interface module at the BUSN XE "BUSN" layer. There is T network but no XE "TDM" MTFI optical fiber interface.RUIM1Rear plug-in board of UIMMDTBIt is the digital XE "Digital" trunk board. It provides 32 E1s.RDTIRear plug-in board of the trunk boardMSPBEach MSPB processes 128 links.MCLKGIt is clock XE "Clock" board. (There are 16 shelves in total. One pair of clock boards is just sufficient.)RCLKG16 groups of clocks, 8K, BITSRCLKG29 groups of clocks, PP2S and 16CHIP input.Signaling XE "Signaling" Link Access Unit (Without Clock)

When the ZXMSG 9000 serves as a large-capacity SG XE "SG" , seven signaling link access units (without clock) borne over the BUSN3 backplane are needed, to implement the signaling service processing function. Figure 11 shows the slots.Figure 11 Slots of Signaling Link Access Unit (without Clock)1234567891011121314151617

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Signaling Link Access Sub-rack (Without Clock) consists of the following boards:MUIMUIt is universal XE "Universal" interface module at the BUSN XE "BUSN" layer. There is T network but no XE "TDM" TFI optical fiber interface.RUIM1Rear plug-in board of UIMMDTBIt is the digital XE "Digital" trunk board. It provides 32 E1s.RDTIRear plug-in board of the trunk boardMSPBEach MSPB processes 128 links.Typical MG XE "SG" ConfigurationIntroductionWhen the ZXMSG 9000 serves as a large-capacity TG, the system supports up to 336,000 trunks (including the peripheral module office XE "office" ). The following describes the configuration of the standard TG by taking 153,600 pure VOIP users namely 76800 TDM channels and 76800 VOIP channels as an example.Central Control XE "Control" Unit

IntroductionWhen the ZXMSG 9000 serves as a standard large-capacity TG, one central control shelf is needed. The central control shelf is borne over the BCTC1 backplane to implement the system control and signaling service processing. Figure 12 shows the board slots.Figure 12 Central Control Unit of Large-Capacity TG1234567891011121314151617

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Large-capacity TG central control unit consists of the following boards:OMPSystem XE "System" control management board. It implements the operation, maintenance and management of the whole system. Two boards are configured in the system in active/standby mode.RMPBOMP XE "OMP" back board. It provides interface to the background, 485 interface and 232 debugging and management interface. It is used together with the OMP.MUIMCIt is universal XE "Universal" interface module board over the BUSN XE "BUSN" layer. There is no T network XE "TDM" or MTFI interface. Two Ethernets are connected together. It is configured for each shelf.RUIM2, 3The rear plug-in boards of MUIMMIPIIP XE "IP" network XE "network" interface board.RMNICRear plug-in board of MNICMCMPOne pair of MCMPs process 48,000 trunk circuits.MCHUBControl XE "Control" plane interconnection hub. It implements the control plane interconnection between other unit and the central control unit.RCHB1, 2Provide 24 and 22 FE interfaces respectively.Central T-Net UnitIntroduction

The BCSN is the central circuit switching network XE "network" backplane of the ZXMSG 9000. One BCSN is configured in the system, as shown in Figure 13.Figure 13 Slots of Central T-Net Unit1234567891011121314151617

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The central T-net unit consists of the following boards:Slot No. 5 and 7They are dedicated slots for MTSNBs. The MTSNB XE "TSNB" supports the switching capacity of 64K~256K. In this configuration, it supports a capacity of 256K.Slot No. 1~4 and 11~12In this configuration, totally 21 pairs of optical interfaces are needed; therefore, three pairs of MTFI board are needed. Each pair of MTFI boards support 8 pairs of optical interfaces, and each pair of optical interface provides 8K time slots. The MUIMT XE "UIMT" of each resource shelf provides a 16K time slot optical interface to connect to the MTFI board.Slot No. 9~10They are dedicated slots for MUIMCs.Clock slot No.15~16They are dedicated slots for the MCLKG XE "CLKG" boards. If the ZXMSG 9000 is configured with the BCSN layer, the MCLKG board is inserted at the BCSN layer in priority.RCLKG1It means 6 channels of clock, 8KBASE and BITS. The panel RCKG1 is used.RCLKG2It means 9 channels of clock, PP2S and 16CHIP input. It is mandatory to configure the BSC debugging. The panel RCKG2 is used.RUIM2 and RUIM 3The rear plug-in boards of MUIMC

VOIP and Trunk XE "Trunk" Unit (BUSN1 or BUMA1)Introduction

The VOIP and trunk unit provides VOIP and trunk interface function. The capacity of the backplane is 8K or 16K. In this configuration, 20 shelves are needed, as shown in Figure 14.Figure 14 VOIP and Trunk Unit1234567891011121314151617

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Note:Total 76800 trunks and VOIP ports are required respectively. Each shelf can support 960(4 trunk circuit, therefore, 20 shelves are required (960(4(20=76800).VOIP and Trunk Unit (BUSN1 or BUMA1) consists of the following boards:Slot No.1 and 2They are network interface slots for MGEB XE "NIPIG" . They provide the external GE interface.Slot No.9~10They are slots for MUIMT XE "UIMT" boards and not compatible with other boards.Slot No.7~8 and 11~16They are slots for MVTCAs. XE "VTCA" In full configuration, totally 8 MVTCA boards are inserted.Slot No.3~6They are slots for MDTBs. Each board supports 32 E1s.RUIM1It is the rear plug-in board of MUIM. It provides a billing interface and two cascade network XE "network" interfaces.RMNICThe rear plug-in board of MIPIKilomega General Trunk UnitIntroductionAs kilomega general service backplane, BGSN mixedly inserts big-service-flow boards and is compatible with the insertion of small-flow board. The backplane provides 24*FE+24*GE media flow with accessing Ethernet ability, it also provides 24 x 100M control flow with accessing Ethernet ability and offers 32K time slot the TDM BUS ability. Each slot supports 8*8M HW or 1*512M LVDS.If BGSN needs to reach maximum trunk processing ability, a single frame must be inserted 7ea MSDTB/2 (Non-active/standby), disposable trunk is 26460 channel as shown in Figure 15.Figure 15 BGSN Backplane Slot Board

NOTE: 1.If the board is inserted in 15/16 slot location, it cannot take 8K clock as standard.2.GEB board and GUIM are connected by SERDES.

3.The board inserted in 16 slot location does not support debugging serial port.4.There are some restrictions for 15/16 slot location configuring SPB:

i.If configuring SPB board with E1/T1, one SPB board can be inserted in 15/16 slot location.

ii.If configuring SPB board without E1/T1, two SPB boards can be inserted in 15/16 slot location.Analog Signaling XE "Signaling" and Trunk XE "Trunk" Unit (BUSN1)Introduction

In this configuration, one BUSN1 shelf is needed. Figure 16 shows the configuration status of analog signaling and trunk unit.Figure 16 Configuration Status of Analog Signaling and Trunk Unit1234567891011121314151617

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Analog Signaling XE "Signaling" and Trunk XE "Trunk" Unit (BUSN1) consists of the following boards:Slot No.9~10They are slots for MUIMT XE "UIMT" boards and not compatible with other boards.Slot No. 5~8, 11~14They are slots for MRBs. In full configuration, totally 8 MRBs are inserted.Slot No. 1~4They are originally slots for MDTBs. In this configuration, these slots can be vacant. The MRBs can be inserted in these slots.Clock Slot No. 15~16They are slots for MCLKG XE "CLKG" boards.Typical AG ConfigurationIntroduction

When the ZXMSG 9000 serves as a large-capacity AG, the system supports the access of up to 1,000,000 subscribers (on the premise that the traffic of each subscriber is 0.05erl), including subscribers of local & remote subscriber units and subscribers on RSMs and PSMs.The central module of the ZXMSG 9000 consists of the following three kinds of units: Central control unit (BCTC) Central T-Net switching unit (BCSN) Universal service trunk unit (BUSN)The peripheral module includes the following three kinds: Switching module SM8C: total 15360 circuits on each SM8C in full configuration Subscriber unit SU960N: total 960 circuits on each SU960N in full configuration Subscriber unit SU480I: total 480 circuits on each SU480I in full configurationThe following takes an example to show how to configure the large-capacity AG. Table 5 lists the large-capacity AG configuration example.Table 5 Large-Capacity AG Configuration ExampleModule NamePeripheral ModulesSM8CSubscriber UnitSU960NSubscriber UnitSU480I

Amount of modules362040

Note:In this case, only the resources of pure subscribers are taken into account, excluding the interworking. In practice, take it into account.Capacity of the case: 3615360+96020+48040=591360 subscribersCentral Control UnitIntroduction

When the ZXMSG 9000 serves as a large-capacity AG XE "SG" , a central control unit is required. The central control unit is borne over the BCTC backplane, implementing the system control and signaling service processing. Figure 17 shows the slots of the central control unit of the large-capacity AG.Figure 17 Slots of Central Control Unit of Large-Capacity AG1234567891011121314151617

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Large-capacity AG central control unit consists of the following boards:OMPSystem XE "System" control management board. It implements the operation, maintenance and management of the whole system. Two boards are configured in the system in active/standby mode.RMPB

As rear plug-in board of OMP XE "OMP" , it provides interfaces to the background, 485 interface XE "Interface" and 232 debugging and management interface. It is used along with the OMP.MUIMCIt is universal XE "Universal" interface module at the BUSN XE "BUSN" layer. There is no T network XE "TDM" or MTFI interface. Two Ethernets are connected together. Each shelf is configured one Ethernet.RUIM2 and RUIM3Rear plug-in boards of MUIMC.MIPIIP XE "IP" network XE "network" interface board.

RMNICRear plug-in board of MNIC.MCMP A pair of boards process 100,000 subscribersMCHUB: Control XE "Control" plane interconnection hub. It implements the control plane interconnection between other unit and the central control unit.RCHB1 and RCHB2They provide 24 and 22 FE interfaces respectively.Slave Control UnitIntroduction

When the ZXMSG 9000 serves as a large-capacity AG XE "SG" , a slave control unit is required. The slave control unit is borne over the BCTC backplane, implementing the system control and signaling service processing. Figure 18 shows the slots of the slave control unit of the large-capacity AG.Figure 18 Slots of Slave Control Unit of Large-Capacity AG1234567891011121314151617

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It is universal XE "Universal" interface module at the BUSN XE "BUSN" layer. There is no T network XE "TDM" or MTFI interface. Two Ethernets are connected together. Each shelf is configured one Ethernet.RUIM2 and RUIM3Rear plug-in boards of MUIMC.MIPIIP XE "IP" network XE "network" interface board. If the slave control shelf is configured with more than four MCMP boards, configure the MIPI board.RMNICRear plug-in board of MNIC.MCMP A pair of boards process 100,000 subscribers

MCHUBControl XE "Control" plane interconnection hub. It implements the control plane interconnection between other unit and the central control unit.RCHB1 and RCHB2They provide 24 and 22 FE interfaces respectively.Central T-Net Switching UnitIntroduction

The BCSN is the central circuit switching network XE "network" backplane of the ZXMSG 9000. One BCSN is configured in the system, as shown in Figure 19.Figure 19 Slots of Central T-Net Unit1234567891011121314151617

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The central T-net unit consists of the following boardsSlot No. 5 and 7They are dedicated slots for MTSNBs. The MTSNB XE "TSNB" supports the switching capacity of 64K~256K. In this configuration, it supports a capacity of 256K.Slot No. 1~4 and 11~12In this configuration, totally 21 pairs of optical interfaces are needed; therefore, three pairs of MTFI board are needed. Each pair of MTFI boards support 8 pairs of optical interfaces, and each pair of optical interface provides 8K time slots. The MUIMT XE "UIMT" of each resource shelf provides a 16K time slot optical interface to connect to the MTFI board.Slot No. 9~10

They are dedicated slots for MUIMCs.Clock slot No.15~16They are dedicated slots for the MCLKG XE "CLKG" boards. If the ZXMSG 9000 is configured with the BCSN layer, the MCLKG board is inserted at the BCSN layer in priority.RCLKG1It means 6 channels of clock, 8KBASE and BITS. The panel RCKG1 is used.RCLKG2It means 9 channels of clock, PP2S and 16CHIP input. It is mandatory to configure the BSC debugging. The panel RCKG2 is used.RUIM2 and RUIM 3The rear plug-in boards of MUIMC.Universal Service Trunk Unit (BUSN)Introduction

The trunk access, VOIP processing, layer-2 signaling processing and peripheral module access are realized in this unit. The trunk unit consists of boards such as MDTB, MSDTB, MRB, MSPB, MVTCA (480-channel), MFBI, MGEB and MVTCA/2 (960-channel), as shown in Figure 20, Figure 21 and Figure 22.Figure 20 Universal Service Trunk Unit (No.1-9 shelf)1234567891011121314151617

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Figure 22 Universal Service Trunk Unit (No.11 shelf)1234567891011121314151617

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To configure the eleven shelves, the following boards are required: total 6 MSPB boards (processing inter- and intra- module communication, total 5 MDTB boards (connecting the subscriber unit), total 36 pairs of MFBIB boards (connecting 36 switching modules), and 4 MRB boards.Slot No.5~6Network interface slot used for inserting the MIPI board and providing one external GE interface.Slot No.9~10They are slots for MUIMT XE "UIMT" boards and not compatible with other boards.Slot No.7~8, 11~16Slots for the MVTCA boards. In full configuration, total 8 MVTCA boards are configured.

Slot No.1~4Slots for the MDTB boards. Each board supports 32 E1s.RUIM1The rear plug-in board of MUIMC, providing a charging network interface and two cascading network interfaces.RMNICThe rear plug-in board of MNIC.Kilomega General Service Resource Unit

IntroductionBGSN general backplane can increase media plane switching band width and processing ability of circuit field. As a kilomega general service backplane, BGSN inserts big-service-flow boards mixedly and is compatible with small-flow boards. BGSN supports below kinds of boards: MDTB

MSDTBMSDTB/2

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Users can realize abundant service resource in terms of certain boards rules and inserting different slot locations for needs. Refer to Figure 23 for typical configuration chart.

Figure 23 Slot Location of BGSN Backplane

Based on BGSN backplane signal, BGSN slot locations are designed as below:Main processing slot locations are 9 and 10 which cannot be inserted other service boards, only GUIM board is allowed. GUIM prereserves IMP telecom network port.Normal slot location 1~41 group GE SERDES and HW LVD; one group of Update connection port between active/standby slot location; 8ea 8M HW, 1ea media plane network port, 1ea control plane network port; compatible with old board in high-speed interface, which is to say, maintain media plane FE and 8M HW and 16M HW interface.Interface board slot location 5~82 groups of GE SERDES, 4 groups of interactive GE SERDES, 1 group of HW LVDS; 8ea 8M HW, 2ea media plane network port and 1 control plane network port.Dual-CPU slot location 11~1411~12 has 1 group GE SERDES and 1ea media plane network port; 13~14 has 2 group GE SERDES and 2ea media plane network port; 11~14 have 1 group interactive GE SERDES, 1 group LVDS, 8*8M HW and 2ea control plane network port.CLKG slot location 15~161 group GE SERDES and HW LVD; give priority to insert CLKG and CLKD board. Mixed insertion of TB, APBE and IMAB is forbidden; compatible with SPB board, both 15 and 16 locations can be inserted SPB board, but be careful that cannot insert 2 SPB board at the same time. For better deployment maintenance, its stipulated that only 15 slot location can be inserted SPB board.Normal 1*100M slot location 171 group GE SERDES; 1 group HW LVDS; 8ea 8M HW, 1 media plane network port and 1 control plane network port

Switching Module (SM8C)Introduction

If only the pure subscribers are carried, the SM8C switching module consists of three kinds of shelves: subscriber shelf BSLC, 16E1 trunk shelf BMDT and central processing shelf BCP.1.The central processing shelf BCP is configured with the following boards: MP, SMPM, SCOMM, DSND, DSNI, PMON, MON, MFBI, MASIG, MDT and POWB. One shelf is fixedly configured, as shown in Figure 24.Figure 24 Central Processing Shelf BCP12345678910111213141516171

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Slot No.1, 27Slots for the power board POWB. Two POWBs are fixedly configured at each shelf.Slot No.3~5, 6~8Slots for the main processor board MP. Two MPs are fixedly configured at each layer.Slot No.2Slot for the shared memory board SMEM. One is fixedly configured at each shelf.Slot No.13Slot for the environment monitoring board PMON or MON. In a single equipment room, one PMON board is fixedly configured. At the moment, the MON board is not configured. If there is already the environment monitoring boarding the equipment room, one MON board is fixedly configured.Slot No.9~12Slots for the super communication board SCOMM. Four SCOMMs are fixedly configured at each shelf.Slot No.22~24Slots for the digital trunk board MDT. Each board has 480-channel.

Slot No.22~26Slots for the multiple analog signaling board MASIG. Each board is configured with four DSP units. Each unit can be configured as TONE, DTMF, MFC, CID and conference telephone.Slot No.20~21Slots for the fibre bus interface board MFBI. When MFBI working as the near-end PSM, usually two MFBIs are configured.Slot No.14~15, 16~17Slots for the digital switching drive board DSND. Two DSNDs are fixedly configured at each shelf. Using stratum-2 or stratum-3 clock shall be marked.Slot No.14~15, 16~17Slots for the clock interface subcard (CIS). If the Bits interface is needed, insert it to the DSND board.Slot No.18~21Slots for the switch network interface board (DSNI). There are two pairs of SP-level DSNI boards carried with MDT, MASIG and SP. Based on the requirements for HWs, decide the amount of DSNIs. A pair of DSNIs provides 16 HWs.Slot No.18~21Slots for the fibre bus interface board MFBI. When MFBI working as the near-end PSM, usually two MFBIs are configured. The MFBI and DSNI boards can be mixed inserted. Based on the transmission distance, the boards are classified into: near (within 2Km), middle (within 30Km) and long-distance (within 50Km).2.Of the 16E1 trunk shelf BMDT, the central processing layer BCP is configured with five MDT and MASIG slots. If the slots are insufficient, add the BMDT layer. The BMDT layer includes boards such as MASIG, MDT and POWB. Of the case, one shelf is needed, as shown in Figure 25.Figure 25 16E1 Trunk Shelf BMDT12345678910111213141516171

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3.The BSLC subscriber shelf is configured with boards such as ASLC, RASL, SP, SPI and MTT. Total 32 such shelves shall be configured, as shown in Figure 26.Figure 26 Subscriber shelf BSLC12345678910111213141516171

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Slot No.1, 27Slots for the power board POWB. Two POWBs are fixedly configured at each layer.Slot No.3~22Slots for the subscriber board ASLC. Total 20 ASLCs are configured at each layer.Slot No.25, 26Slots for the subscriber processor board SP. Two layers as a unit are configured with two SPs.Slot No.25, 26Slots for the subscriber processor interface board SPI. Two layers as a unit are configured with two SPIs.Slot No.23Slot for multi-functional test board MTT. Two layers of subscribers as a unit is configured with one MTT board.Subscriber Unit (SU960N)Introduction

The SU960N subscriber unit is configured with boards such as ASLC, RASL, PMSP and MTT, as shown in Figure 27.Figure 27 Subscriber Unit SU960N12345678910111213141516171

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Slot No.1, 27Slots for the power board POWB. Two POWBs are fixedly configured at each layer.Slot No.3~22Slots for the subscriber board ASLC. Total 20 ASLCs are configured at each layer.Slot No.25, 26Slots for the remote multi-functional processing board PMSP. Two layers as a unit are configured with two PMSPs. At the moment, the convergence ratio is 1:8.Slot No.25, 26Slots for the subscriber processor interface board SPI. Two layers as a unit are configured with two SPIs.Slot No.23Slot for multi-functional test board MTT. Two layers as a unit are configured with one MTT board.Subscriber Unit (SU480I)Introduction

The SU480I subscriber unit is configured with boards such as ASLC, RASL, PMSP and MTT, as shown in Figure 28. Figure 28 Subscriber Unit SU480I12345678910111213141516

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Slot No.13, 14Slots for the subscriber processor interface board SPI. Two layers as a unit are configured with two SPIs.Slot No.12Slot for multi-functional test board MTT. Two layers as a unit are configured with one MTT board.Instance IntroductionIntroduction

This section introduces some instances.Actual RequirementsIntroduction

Suppose that there is a tandem office XE "office" . In this office, the ZXMSG 9000 serves as both a TG and an SG XE "SG" . When the ZXMSG 9000 serves as a TG, the capacity is 42,000 trunks (700 E1s on the TDM XE "TDM" side and VOIP side respectively); when the ZXMSG 9000 serves as an SG, it processes the signaling of the local tandem office (if 2000 TDM DS0s correspond to one 64K SS7 link, 11 links are needed.), and each E1 supports four 64k links.Networking AnalysisIntroduction

The networking architecture is shown in Figure 29.Figure 29 Networking Architecture

As shown in Figure 29, the ZXMSG 9000 serves as a device combining the TG and SG XE "SG" in the tandem office XE "office" . The ZXMSG 9000 is connected to the PSTN/ISDN through E1/SS7 to implement the voice/facsimile conversion between the trunk side and the IP XE "IP" network XE "network" side of the PSTN/ISDN. The ZXMSG 9000 adopts the SIGTRAN XE "SIGTRAN" protocol stack and SS to implement the signaling interconnection between the SS7 network and IP network.

Configuration ImplementationIntroduction

According to the configuration in the above section and referring to the corresponding calculation method, configure the ZXMSG 9000, as shown in Table 6.Table 6 ZXMSG 9000 ConfigurationNo.NameBoard XE "Board" CodeQty.

BCTC1 Layer

1Backplane XE "Backplane" of Control XE "Control" Center XE "Center" BCTC XE "BCTC" 1

2Operation Main Processor XE "Processor" OMP XE "OMP" 2

3Rear operation and maintenance processing boardRMPB2

4Service processing boardNCMP4

5Control XE "Control" HUB XE "HUB" CHUB2

6Back board of control plane interconnection board 1RCHB11

7Back board of control plane interconnection board 2RCHB21

8Universal XE "Universal" Interface XE "Interface" Module of BCTC XE "BCTC" UIMC2

9Back board 2 of universal interface moduleRUIM21

10Back board 3 of universal interface moduleRUIM31

11IP XE "IP" bearer XE "bearer" Interface XE "Interface" (100M)IPI2

12Network of IP XE "IP" Interface XE "Interface" with GigabitMGEB XE "NIPIG" 0

13Back Board XE "Board" of Interface XE "Interface" BoardRMNIC2

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1Backplane XE "Backplane" of Circuit XE "Circuit" Switch NetworkBCSN1

2Universal XE "Universal" Interface XE "Interface" Module of BCTC XE "BCTC" UIMC2

3Back Board XE "Board" 2 of Universal XE "Universal" Interface XE "Interface" ModuleRUIM21

4Back Board XE "Board" 3 of Universal XE "Universal" Interface XE "Interface" ModuleRUIM31

5TDM XE "TDM" Fiber XE "Fibre" Interface XE "Interface" TFI2

6TDM XE "TDM" Switch Network Board XE "Board" TSNB XE "TSNB" 2

7Clock XE "Clock" GeneratorCLKG XE "CLKG" 2

8Back Board XE "Board" 1 of Clock XE "Clock" GeneratorRCKG11

9Back Board XE "Board" 2 of Clock XE "Clock" GeneratorRCKG21

BUSN1 Layer

1Backplane XE "Backplane" of Universal XE "Universal" Service NetworkBUSN XE "BUSN" 6

2Universal XE "Universal" Interface XE "Interface" Module of TSNB XE "TSNB" UIMT XE "UIMT" 12

3Back Board XE "Board" 1 of Universal XE "Universal" Interface XE "Interface" ModuleRUIM112

4IP XE "IP" bearer XE "bearer" Interface XE "Interface" (100M)IPI12

5Network of IP XE "IP" Interface XE "Interface" with GigabitMGEB XE "NIPIG" 0

6Back Board XE "Board" of Interface XE "Interface" BoardRMINC12

7Digital XE "Digital" trunk boardDTB XE "DTB" 22

8Back Board XE "Board" of Digital XE "Digital" Trunk XE "Trunk" BoardRDTI22

9Digital XE "Digital" Trunk XE "Trunk" Board XE "Board" SDTB0

10Voice XE "Voice" Transcoder XE "Transcoder" Card( XE "Card" ASIC) XE "ASIC" VTCA XE "VTCA" 44

11Media XE "Media" Resource XE "Resource" Board XE "Board" MRB2

12Clock XE "Clock" GeneratorCLKD0

13Back Board XE "Board" 1 of Clock XE "Clock" GeneratorRCLKD10

14 Back Board XE "Board" 2 of Clock XE "Clock" GeneratorRCLKD20

BUSN3 Layer

1Backplane XE "Backplane" of Universal XE "Universal" Service NetworkBUSN XE "BUSN" 1

2Universal XE "Universal" Interface XE "Interface" Module of BUSN XE "BUSN" UIMU XE "UIMU" 2

3Back board 1 of Universal XE "Universal" Interface XE "Interface" ModuleRUIM12

4Signaling XE "Signaling" Process Board XE "Board" SPB2

5Digital XE "Digital" Trunk XE "Trunk" Board XE "Board" DTB XE "DTB" 2

6Back Board XE "Board" of Digital XE "Digital" Trunk XE "Trunk" BoardRDTI2

7Clock XE "Clock" GeneratorCLKG XE "CLKG" 0

8Back Board XE "Board" 1 of Clock XE "Clock" GeneratorRCKG10

9Back Board XE "Board" 2 of Clock XE "Clock" GeneratorRCKG20

10Clock XE "Clock" GeneratorCLKD0

11 Back Board XE "Board" 1 of Clock XE "Clock" GeneratorRCLKD10

12 Back Board XE "Board" 2 of Clock XE "Clock" GeneratorRCLKD20

Mechanical Part and Cable

1RackRack3

2ShelfShelf9

3Power inserting boxPower inserting box3

4Fan inserting boxFan inserting box9

5Cable inserting boxCable inserting box9

68U cover for blank slot8U Cover for blank slot3

71U cover for blank slot1U Cover for blank slot9

8 Installation pedestalInstallation Pedestal3

9Digit trunk cableDigital XE "Digital" Trunk XE "Trunk" Cable72

10 Power cable (3 color)Power Cable (3 Color)3

Application FeaturesIntroduction

The application features are as follows:1.Simple and clear network XE "network" structure.2.The ZXMSG 9000 provides functions of both the TG and SG XE "SG" . Only IP XE "IP" interface and TDM XE "TDM" interface are required.Chapter 2Product Description of ZXMSG 9000 MT64Overview

Introduction

This chapter describes the ZXMSG 9000 series product ZXMSG 9000 MT64.ZXMSG 9000 MT64 is designed with the capacity of single shelf 8~64E1/T1 or 1STM-1. It can cascade one shelf with maximum capacity of 128E1/T1 or 2STM-1. The signaling gateway is built-in. This product supplements the ZXMSG 9000 with 128E1/T1 or less configuration.Standard ComplianceRefer to the Standard Compliance section in the first chapter.ContentsThis chapter consists of the following topics.

TopicPage No.

Product Features45

Product Functions47

Product Networking47

System Configuration48

Product FeaturesIntroduction

This section describes the product features.Compact StructureZXMSG 9000 MT64 is only configured with two kinds of functional boards: Main control boardThe main control board integrates the central control unit (8270 or 85XX), media (10GE SWITCH) + control Ethernet switch unit