ZXMSG 5200 Product Description


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Version Date Author Approved By Remarks

V1.0 2008-08-10 Jiang Xiaolin Fixed networking planning department

Not open to the Third Party

V1.1 2008-11-20

XieYu,SunPeng,ShenYapeng, FuJianwen XuJinsong WanGuanghua MeiSen WangBaiqiang

Network Product Planning Department

V1.2 2009-04-15

XieYu,SunPeng,ShenYapeng, FuJianwen XuJinsong WanGuanghua MeiSen WangBaiqiang

Network Product Planning Department

© 2009 ZTE Corporation. All rights reserved.

ZTE CONFIDENTIAL: This document contains proprietary information of ZTE and is not to be disclosed or used without the prior written permission of ZTE.

Due to update and improvement of ZTE products and technologies, information in this document is subjected to change without notice.


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TABLE OF CONTENTS

1 Overview ..................................................................................................................... 1

2 Highlight Features...................................................................................................... 2 2.1 Advanced IP+TDM Dual Bus Architecture .................................................................. 2 2.2 Full Service Access Platform....................................................................................... 2 2.3 High Service Processing Capability............................................................................. 3 2.4 Fully PWE3 support ..................................................................................................... 3 2.5 High Speed Access Interface ...................................................................................... 4 2.5.1 VDSL2 access solution................................................................................................ 4 2.5.2 xPON access solution.................................................................................................. 4 2.6 High Speed Uplink Interface........................................................................................ 5 2.7 IPTV Bearer Solution ................................................................................................... 5 2.8 Service Aware Platform Based on QoS....................................................................... 6 2.9 Intelligent End to End Broadband O&M....................................................................... 6 2.10 Comprehensive Security Guarantee ........................................................................... 7 2.11 Carrier Grade Availability............................................................................................. 7 2.12 High Adaptability to Diversified Environment............................................................... 8 2.13 Powerful EMS System................................................................................................. 8 2.14 Smooth Migration Capability........................................................................................ 9

3 Functionality ............................................................................................................. 10 3.1 Narrowband Functions............................................................................................... 10 3.1.1 Basic Features........................................................................................................... 10 3.1.2 Signalling Protocol ..................................................................................................... 11 3.1.3 Narrowband Service Capability ................................................................................. 14 3.1.4 Voice Quality Techniques.......................................................................................... 16 3.1.5 Reliability.................................................................................................................... 16 3.2 Broadband Functions................................................................................................. 17 3.2.1 XDSL Features .......................................................................................................... 17 3.2.2 xPON features ........................................................................................................... 19 3.2.3 Ethernet features ....................................................................................................... 20 3.2.4 ATM features ............................................................................................................. 21 3.2.5 IMA features .............................................................................................................. 21 3.2.6 PWE3 features........................................................................................................... 21 3.2.7 L2 Features................................................................................................................ 22 3.2.8 L3 Features................................................................................................................ 22 3.2.9 IPTV Features............................................................................................................ 24 3.2.10 QoS............................................................................................................................ 25 3.2.11 Security Features....................................................................................................... 26 3.2.12 Maintainability Features............................................................................................. 27 3.2.13 User Access & Port Identification .............................................................................. 28

4 System Architecture ................................................................................................ 29 4.1 Working Principle....................................................................................................... 29 4.2 Hardware Architecture ............................................................................................... 30 4.2.1 Hardware Structure.................................................................................................... 30 4.2.2 Cabinets..................................................................................................................... 31 4.2.3 Shelves ...................................................................................................................... 35 4.2.4 Cards ......................................................................................................................... 40 4.3 Software Architecture ................................................................................................ 48 4.3.1 Protocol Subsystem................................................................................................... 48 4.3.2 Service Subsystem.................................................................................................... 49


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4.3.3 Bearer Subsystem ..................................................................................................... 49 4.3.4 Operation Support Subsystem .................................................................................. 49 4.3.5 Operation and Management Subsystem................................................................... 51

5 Technical Specifications ......................................................................................... 52 5.1 Physical Indices ......................................................................................................... 52 5.1.1 Mechanical Dimension............................................................................................... 52 5.1.2 Weight........................................................................................................................ 52 5.2 Capacity ..................................................................................................................... 53 5.3 Performance .............................................................................................................. 54 5.3.1 Narrowband Service Performance ............................................................................ 54 5.3.2 Broadband Service Performance .............................................................................. 55 5.4 Power......................................................................................................................... 55 5.4.1 Input Power Requirement .......................................................................................... 55 5.4.2 Power Consumption .................................................................................................. 56 5.5 Working Environment ................................................................................................ 58 5.6 Reliability.................................................................................................................... 58 5.7 References................................................................................................................. 59

6 Operation and Maintenance .................................................................................... 64 6.1 GUI............................................................................................................................. 64 6.1.1 System Structure ....................................................................................................... 64 6.1.2 Characteristics of EMS .............................................................................................. 65 6.1.3 EMS Functions .......................................................................................................... 67 6.1.4 EMS Networking ........................................................................................................ 70 6.1.5 EMS Interfaces .......................................................................................................... 73 6.2 CLI ............................................................................................................................. 74 6.2.1 Login Modes .............................................................................................................. 74 6.2.2 User Modes................................................................................................................ 74

7 Networking................................................................................................................ 75 7.1 Integrated Access Application ................................................................................... 75 7.2 Triple Play Application ............................................................................................... 76 7.3 PWE3 Application ...................................................................................................... 77 7.4 VoIP Application ........................................................................................................ 78 7.5 User Leased Line Service Application....................................................................... 79 7.6 V5.2 application ......................................................................................................... 80 7.7 R2 Packet Application................................................................................................ 81


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FIGURES

Figure 1 The position of ZXMSG 5200 in the network................................................................. 1 Figure 2 Leased Line Services .................................................................................................. 15 Figure 3 ZXMSG 5200 Operating Principles.............................................................................. 29 Figure 4 The Hardware Structure of the ZXMSG 5200 ............................................................. 30 Figure 5 Structure of Control Unit of Single Power Rear Access Shelf ..................................... 36 Figure 6 Structure of User Unit of Single Power Rear Access Shelf ......................................... 36 Figure 7 Structure of Double Power Rear Access Shelf............................................................ 37 Figure 8 Structure of Double Power front Access Shelf ............................................................ 37 Figure 9 ONU100 mini Shelf ...................................................................................................... 38 Figure 10 OUT50F Shelf Structure .............................................................................................. 38 Figure 11 OUT50C Shelf Structure.............................................................................................. 39 Figure 12 OUT50D Shelf Structure.............................................................................................. 40 Figure 13 ZXMSG 5200 Software Structure ................................................................................ 48 Figure 14 Sub-Modules of Operation Support System ................................................................ 50 Figure 15 System Structure of the NetNumen N31 ..................................................................... 65 Figure 16 Centralized Management Mode................................................................................... 72 Figure 17 NBI and SBI in NetNumen N31 ................................................................................... 73 Figure 18 ZXMSG 5200 integrated access application in NGN................................................... 75 Figure 19 Triple play application in ZXMSG 5200 ....................................................................... 76 Figure 20 PWE3 application in ZXMSG 5200.............................................................................. 77 Figure 21 ZXMSG 5200 VoIP application in NGN network ......................................................... 78 Figure 22 ZXMSG 5200 VoIP application in IMS network ........................................................... 79 Figure 23 ZXMSG 5200 user leased line application in DDN network ........................................ 80 Figure 24 V5.2 application in ZXMSG 5200................................................................................. 81 Figure 25 ZXMSG 5200 R2 packet application in NGN network ................................................. 81

TABLES

Table 1 Subscriber interfaces supported by ZXMSG5200 ......................................................... 2 Table 2 ZXMSG 5200 Cabinets................................................................................................ 31 Table 3 Major Technical Parameters of ZXDU45..................................................................... 33 Table 4 ZXMSG 5200 Built-in Storage Battery......................................................................... 34 Table 5 Major Technical Parameters of Built-in Storage Battery.............................................. 34 Table 6 Description of Power & Monitor Types ........................................................................ 35 Table 7 Control and Switching Cards ....................................................................................... 41 Table 8 Packet Processing and Resource Cards..................................................................... 42 Table 9 Net Address Translation Card ..................................................................................... 42 Table 10 Rear Access Uplink Sub-cards .................................................................................... 42 Table 11 Front Access Uplink Sub-cards ................................................................................... 43 Table 12 Analog Line Cards ....................................................................................................... 44 Table 13 Digital Line Cards......................................................................................................... 44 Table 14 DSL Subscribers Cards ............................................................................................... 45


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Table 15 Ethernet Cards............................................................................................................. 45 Table 16 xPON Cards................................................................................................................. 46 Table 17 Integrated Voice Data Subscriber Cards ..................................................................... 46 Table 18 Circuit Emulation Cards ............................................................................................... 47 Table 19 Power Cards ................................................................................................................ 47 Table 20 Other Cards ................................................................................................................. 47 Table 21 Dimensions of Different Cabinets ................................................................................ 52 Table 22 weight of Different Cabinets......................................................................................... 52 Table 23 Capacity of Different Cabinets ..................................................................................... 53 Table 24 Narrowband Service Performance............................................................................... 54 Table 25 broadband Service Performance................................................................................. 55 Table 26 Input Power Requirement of Different Cabinets .......................................................... 56 Table 27 Board Consumption of ZXMSG 5200. ......................................................................... 56 Table 28 Temperature & Humidity Requirement of Different Cabinets ...................................... 58 Table 29 Standards Compliance ................................................................................................ 59


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1 Overview Facing increased competition from wireless telecommunication operators, providers of cable television networks and large Internet content providers with strong brands and deep pockets, the fixed-line operators are now searching for new revenue streams from the increasingly popular triple or quadruple play bundled package of IPTV, voice calls and ultra-high-speed broadband Internet access. Next-generation networks (NGN) herald the shift from a "one network, one service" approach, to the delivery of many services over a single network. Telecom field has entered the period of transition with the theme of convergence. Convergence is also ongoing at the access layer. One integrated access platform for all kinds of access can realize unified plan, unified construction, unified service provision and unified maintenance so that it will greatly decrease both the CAPEX and the OPEX.

As a mainstream provider of MSAN solution and products in the world, ZTE’s MSAN products are constantly developing, catering to the fast development of telecommunications. Aggregating multiple technologies into a single platform, ZTE’s ZXMSG 5200 is very flexible in solution and service provision. At subscriber access side, ZXMSG 5200 can provide legacy voice access, broadband access, voice over IP and multimedia services based on cooper or fiber medium; at network side , it can adapt to PSTN , NGN or IMS for voice provision, and it can adapt to ATM or IP for data service. For the service provision, it’s one triple-play ready platform. ZXMSG 5200 also supports smooth evolution from PSTN to NGN and IMS to protect operators’ investment.

Figure 1 shows the position of ZXMSG 5200 in an overall network solution. It is located at the access layer of the telecom network.

Figure 1 The position of ZXMSG 5200 in the network


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2 Highlight Features These section describers the highlight features of ZXMSG 5200.

2.1 Advanced IP+TDM Dual Bus Architecture To guarantee the best quality of all services provided, ZXMSG 5200 adopts advanced IP + TDM dual bus architecture, always using the most appropriate technology to process each kind of service based on its technical attributes. IP technology is the essential main force, dedicated to broadband based new-generation services, while TDM technology is a valuable supplement, since it will still be the best solution for legacy network applications in near future.

For IP bus, ZXMSG 5200 supports GE and 10GE to slots, which fully guarantees the maxim bandwidth requirement for each subscriber port of any kind of service card.

Attribute to the ALL-IP core with adequate bandwidth, ZXMSG 5200 can easily integrate with the latest Ethernet based access technologies, i.e. ZXMSG 5200 supports new-generation broadband access services like VDSL2, EFM, EPON, and GPON etc.

2.2 Full Service Access Platform ZXMSG 5200 provides an industry-leading suite of integrated access services, from legacy narrowband applications like POTS, ISDN, T1/E1, leased line etc., to up-to-date broadband applications like ADSL2+, VDSL2, SHDSL, FE/GE, GPON/EPON, etc. As a full service access platform, ZXMSG 5200 can simultaneously carry voice, video and high-speed data services for FTTN/FTTC/FTTB applications, which give operators a versatile, flexible, and cost-effective solution to satisfy various customers with the exact services they want.

Table 1 shows the subscriber interfaces supported by ZXMSG 5200:

Table 1 Subscriber interfaces supported by ZXMSG5200

Narrowband interfaces

POTS, ISDN BRI, ISDN PRI, E1/T1, 2/4 wire VF V.24 V.35 E&M SHDSL (TDM mode)



Broadband interfaces

ADSL ADSL2 ADSL2+ VDSL2 SHDSL (ATM mode) SHDSL.bis FE GE EPON GPON

2.3 High Service Processing Capability ZXMSG 5200 has powerful narrowband service and broadband service processing capabilities.

• Up to 168G non-blocked Ethernet switching capability to meet broadband service requirements

• Offering 4K*4K non-blocked TDM switching capability for TDM service.

• VoIP service processing capability exceeds 100K BHCA.

• Support 1024 multicast channels.

2.4 Fully PWE3 support ZXMSG 5200, with a highly integrated Circuit Emulation Services (CES) module, enables circuit emulation functionality in multi-service equipment. It provides both structured and unstructured circuit emulation services (CES) for both T1 and E1 streams across a packet network based on Ethernet technology. The circuit emulation features in ZXMSG 5200 comply with the relevant standards and support for protocols such as SAToP (RFC4553) and CESoPSN (RFC5086), developed by the IETF's PWE3 working group. For the structured E1 format, G.704 CRC4 and non-CRC4 are supported. The other is for N*64kbps user data DDN transferring transparently between two ZXMSG 5200s over PSN. In this mode, pairs of N*64kbps can communicate through PSN. ZXMSG 5200 directly offers N*64 K DDN ports to users.

ZXMSG 5200 is capable of assembling user-defined packets of TDM traffic from the TDM access interface and transmitting them to the Ethernet interfaces. It supports a range of different packet switched networks, including Ethernet, IP and MPLS.

ZXMSG 5200 incorporates a range of powerful clock recovery mechanisms on each TDM stream, allowing the frequency of the original clock to be regenerated. Timing is carried using RTP, and both adaptive and differential clock recovery schemes are included, allowing the customer to choose the correct scheme for the application.

The evolutionary pseudo wire approach maximizes investment protection by running all TDM traffic – irrespective of protocols or signaling – transparently over



Ethernet/MPLS/IP networks. By supporting PWE3, ZXMSG 5200 helps both operators and enterprises to take advantage of the PSN infrastructure and reduce network expenses without degrading functionality or services.

2.5 High Speed Access Interface ZXMSG 5200 supports GPON/EPON line card and VDSL2 (30a profile) line card.

2.5.1 VDSL2 access solution

VDSL2 (Very High Speed Digital Subscriber Line 2) is an access technology that exploits the existing infrastructure of copper wires that were originally deployed for POTS services. It can be deployed from central offices, from fiber-fed cabinets located near the customer premises, or within buildings. The greater bandwidth of VDSL2 gives telecommunications operators the ability to offer advanced services such as multiple streams of interactive standard and high-definition TV over IP over the existing copper plant. TV services are fast becoming strategically important to telecommunications operators who must now compete head-to-head with cable operators launching voice over IP (VoIP) and high-speed internet services.

Many operators have thus already started to consider fiber deeper into the access network – for example, fiber to the node (FTTN) and fiber to the curb (FTTC) – shortening the length of copper loops to less than 1500 meters.

The VDSL2 line card in ZXMSG 5200 supports all the VDSL2 features, such as lower power consumption, convenient VDSL2 management interface, fully TR101 compliant, high performance, and better interoperability.

2.5.2 xPON access solution

PON technology supports services such as voice, data and video for network construction, on the other hand, PON provides symmetrical high bandwidth for both upstream and downstream (EPON upstream 1.25G bps, downstream 1.25G bps, GPON upstream 1.25G bps, downstream 2.5G bps), with passive splitter and single mode fiber, EPON is easy for management, maintenance, and can greatly reduce CAPEX and OPEX of network.

Fiber access is one of the key technologies of Next Generation Network (NGN). FTTx (x can be Home, Business/Building, Cabinet network or other fiber applications) meets the requirements of the Access Network (AN). PON technology uses passive ODN equipments, which are small in size with less electromagnetism disturbance and fault rate. The long distance (i.e. 20 Km) between OLT and ONU meets multiple users’ requirement. Passive ODN makes network much easier for management and maintenance. The life of optical fiber is more than 50 years, much longer than that of normal copper cable. FTTx solutions based on PON technology are becoming more and more popular in world wide.

For ZXMSG 5200, the support of EPON/GPON line card can match the requirement of some enterprises and family, which need more bandwidth. ZXMSG 5200 can provide the access solution, not only in copper access, but also in fiber access.



ZXMSG 5200 supports 1 EPON interface each EPON line card, and 4 GPON interfaces each GPON line card.

2.6 High Speed Uplink Interface The GISX board provides two 10GE optical ports for uplink. The EPNI card provides one EPON uplink interface.

With the development of different broadband service, especially services based on video and audio, such as IPTV, video conferencing, on line gaming, HDTV etc, the bandwidth requirement is becoming higher and higher. The bandwidth requirement for these services ranges from 20 ~ 50Mb/s even up to 100Mb/s.

ZXMSG 5200 provide several options to choose for uplink interface, such as GE, EPON, and 10GE. The EPON interface is used in FTTB/FTTC scenario, where 5200 acts as ONU. The GE/10GE interface is used in FTTN scenario; where 5200 is deployed at CO. Carrier choose different interface, according to the bandwidth requirement, and fiber development strategy. With 10GE slot bandwidth, ZXMSG 5200 support 10GE line speed.

2.7 IPTV Bearer Solution According to the rapid growth of IPTV and operators’ requirements for manageable multicast services, controllability is becoming more and more important for multicast technology. Controllability requirements include controlling users’ access to multicast services, recording users’ service, and supporting service analysis.

ZXMSG 5200 mainly focuses on two jobs, namely service control and service management. Service control handles those functions surrounding service access, such as service suspension, service resume, bandwidth control, CAC, PRV, VOD limit and source MAC control. While service management handles the packaging of live broadcast channel and CDR statistics, which provides valuable user information for operators.

The prominent features of ZXMSG 5200 multicast solution to FTTX network are listed as follows.

• It is an operable and manageable solution aiming at the unique characteristics of IPTV as well as its requirement on network structure, which perfectly integrates with IPTV middle ware and CPE.

• Service delivery based on MVLAN complies with relevant standards and improves the interconnectivity. A complete set of service control and management functions ensure the security in subscribers’ side after deployment. And optimized protocol handling could maximally improve customer satisfaction.

• Complying with relevant standards and protocols, IGMP implementation in ZXMSG 5200 could accommodate various work modes such as IGMP PROXY, which could maximally improve the adaptability, operability and interconnectivity in network construction and service deployment.



• It provides perfect CAC and corresponding statistics for IPTV service deployment which could meet the demand for the analysis of service operation, charge calculation and the preference of subscribers, thus offering the operator with a more powerful tool to optimize the service.

• With the help of high performance hardware switching chip, it provides none-block forwarding and copy for multicast data.

2.8 Service Aware Platform Based on QoS ZXMSG 5200 is a service aware platform which can provide different quality of service according to the requirements of the service. ZXMSG 5200 realize perfect QoS mechanism for differentiated service.

• ZXMSG5200 realize end to end QoS procedure, such as traffic classification, traffic policy and metering, congestion avoidance, queue scheduling, traffic shaping etc.

• Provide different kinds of methods to differentiate service from terminals, it could be by multiple PVC, by 802.1P or by VLAN ID

• Support the isolation of control stream, narrowband media stream, internet stream and video stream in different VLAN or different physical uplink port.

2.9 Intelligent End to End Broadband O&M There is a statistic of the distribution of failure reason which leads to fail to access to the internet. Only 10% is from network element side, while 25％ is from line-side and 65% is from home-premise. So an intelligent end to end broadband O&M cover from user PC to ISP will greatly relieve operators from tough maintenance burden.

• ZXMSG 5200 on line test system can locate the failures of copper line

• CPE remote management implements CPE remote information inquiry, configuration management, PVC management, remote reset and CPE diagnosis

• ZTE ESS (Easy Service System) can cooperate with ZXMSG 5200 to resolve the problems at CPE’s network side, ZTE ESS includes the following functions:

− Network quality and speed test function module

− Service diagnosis module detect PC, CPE and connectivity between them and dispose issues caused by user error configuration and network fault

− Service activation module deliver service activation guide, activation confirm and service activation fault detection

− PPPoE dial module conduct dial initiation and incorporate traffic and duration statistic



2.10 Comprehensive Security Guarantee ZXMSG 5200 realizes security functions through the following aspects:

• Maintenance security which is used to limit operation right to prevent illegal activity, record any activities on configuration etc.

• L2/L3 mechanism implemented for security, which is described in detail in chapter 3.2.

• Networking security, such as uplink interface protection is used to improve reliability.

2.11 Carrier Grade Availability As the next generation of core access equipment, the high availability of ZXMSG 5200 had been kept as one of the most important mission all the time, from system level architecture design, to detail implementation of hardware/software, and enormous exhaustive test cases on reliability and robustness.

With the outstanding achievements on key technical aspects like hardware, software and networking, can ZXMSG 5200 be capable of ensuring carrier grade availability, which makes a great contribution to the massive global deployment of ZXMSG 5200 in telecom networks.

• Hardware Reliability Features

− Dual-Star bus architecture: It will be no impact on system in case of any single failure of line card or switch fabric.

− 1:1 redundant backup of control & switch board: All key components located on control and switch board, such as control module, switching fabrics, clocks, service processing modules and uplink interfaces, are fully protected. If any abnormal is detected, hot-standby control & switch board will take charge of the system seamlessly and smoothly.

− 1+1 redundant backup of power supply: Each shelf is equipped with two power supplies working in load-sharing mode. Each power supply board has isolated power feed line, and can support the shelf alone. There will be nothing abnormal on system even if only one power card works.

− Load sharing of DSP resource: The system supports up to three DSP resource cards, which work in load-sharing mode. Once any card fails, other cards will automatically take over the affected VOIP sessions.

• Software Reliability Features

− Platform-based infrastructure with function modularization: Many advanced design principles are applied for the development of ZXMSG 5200, such as object-orientation, loosely couple, error tolerance, and error correction etc.



− Secure software version management: This feature can protect ZXMSG 5200 from maintenance related risks, such as fail software update, operation mistakes on software files, broken or illegal software files, etc...

− Real-time monitor for the running status of system: All internal check points of the system will be periodically verified for normality, which insure to detect any abnormal instantaneously.

• Networking Reliability Features

− Abundant uplink protection mechanisms to choose: i.e. Rapid Spanning Tree Protocol (RSTP) protection for multiple FE/GE ports; 1:1 redundant protection for dual FE/GE ports in pair; link aggregation and protection based on 802.1ad for multiple FE/GE ports.

− Exceptional redundant protections on service level: i.e. Dual homing technology for H.248 or MGCP application, which means ZXMSG5200 register with several MGCs and can switches to different MGC when necessary; Signal link protection for V5 application.

2.12 High Adaptability to Diversified Environment ZXMSG 5200 provides series product models which can fully meet the carriers’ application requirements.

• Different capacity equipments include large capacity, medium capacity, small capacity and mini capacity.

• Different access mode equipments include front access and rear access.

• Different application environment equipments include indoor type and outdoor type.

2.13 Powerful EMS System NetNumen N31 is an integrated element management system (EMS) which manages various ZTE-developed digital devices on the backbone layer, tandem layer, and access layer. It has the following features:

• Provide universal access, universal configuration and universal management.

• The MSAN can be managed as one network element both for narrowband and broadband service. It can also be separate so as to adapt to the existing maintenance structure of the carriers.

• EMS system can fulfill end to end service management and provides abundant north-bound interfaces to the TMN center.



2.14 Smooth Migration Capability The power and versatility of ZXMSG 5200 supports the next-generation services while leveraging legacy network. As a full service access platform, ZXMSG 5200 can simultaneously carry voice, video and high-speed data services onto a single network infrastructure. With ZXMSG 5200, carriers can always gain versatile, flexible, cost-effective, proven, and deployed solutions for their exclusive requirements on access network: diverse locations from the Central Office (CO) to the farthest reaches of the network's edge, diverse application scenarios from classic Digital Loop Carrier (DLC) to popular Media gateway and FTTx, diverse service networks from PTSN to NGN and IMS. ZXMSG 5200 ensures a cost-effective and profitable solution for carriers to deliver a great variety of services which their customers have been waiting for, with the built-in capability of hassle-free migration between different applications and smooth evolution to future generation networks.



3 Functionality This section describes the functions of ZXMSG 5200.

3.1 Narrowband Functions

3.1.1 Basic Features

• ZXMSG5200 supports the following controlling protocols:

− V5.X Protocol, a set of protocols defined by ETSI and ITU-T, including V5.1 and V5.2 protocol

− H.248/Megaco V1/V2/V3, the Gateway Control Protocol, also known as Megaco (IETF designation) or H.248 (ITU designation), is a control protocol used between a Media Gateway and a Media Gateway Controller in a network.

− Medair gateway Control Protocol (MGCP), a signaling and call control protocol defined in RFC 3435

− ISDN User Adapter Protocol (IUA) and Stream Control Transmission Protocol (SCTP), the seamless backhaul of Q.921 user messages and service interface across an IP network

− Session Initiate Protocol (SIP), a signalling protocol, widely used for setting up and tearing down multimedia communication sessions such as voice and video calls over the Internet.

• Supports the Real-time Transport Protocol (RTP) and the Real-time Transport Control Protocol (RTCP) which was developed by the Audio-Video Transport Working Group of the IETF and first published in 1996 as RFC 1889 which was made obsolete in 2003 by RFC 3550.

− Provides end to end network transport function suitable for real-time applications such as audio, data, etc

− Supports sequence numbering, ttime stamping, and delivery monitoring

− Supports multicast or unicast network services

− gathers statistics on a media connection and information such as bytes sent, packets sent, lost packets, jitter, feedback and round trip delay.allows monitoring of the audio and data delivery

− runs on top of the User Datagram Protocol (UDP)

• Voice coding/decoding capability



− G.711 A/µ-law, 64kbit/s bit rate, also known as Pulse Code Modulation (PCM)

− G.726, also known as Adaptive Differential PCM (ADPCM) covering the transmission of voice at rates of 16, 24, 32, and 40 kbit/s

− G.723.1, a hybrid speech coder which includes 6.3 kbit/s MPC-MLQ algorithm (using 24 byte frames) and 5.3 kbit/s ACELP algorithm (using 20 byte frames)

− G.729, including G.729, G.729 annex A, G.729 annex B

• FoIP function

− T.30 voice band Data mode (VBD)

− T.38 relay mode

• MoIP, Voice band Data mode(VBD)

• Pulse Dialing

• Dual Tone Multi-Frequency (DTMF) digit collection/generation

• Pulse metering and polarity reversal metering

• .PSTN/ISDN subscriber line test

• Hair-pin function, for the communication between the subscribers in the same MSAN, which is adopted so as to switch directly in TDM domain, no need the procedure of VoIP transformation.

• PBX connection (analog line)

• PBX connection (E1/T1)

• Self Switch, if link with Softswitch or MGC is broken

• Overload control capability, according the following levels: CPU load, VoIP channels, CNIC traffic, bandwidth etc.

• Voice stream traffic monitoring

• Voice QoS monitoring

3.1.2 Signalling Protocol

3.1.2.1 V5 Protocol

This section describes the relevant feature on V5 protocol.



• Allows the communication between local exchange(LE) and access network(AN)

• Supports protocol in two forms:

− V5.1, in which there is a 1 to 1 correspondence between subscriber lines and bearer channels in the aggregate link to the exchange. A V5.1 interface relates to a single aggregate E1 (2 Mbit/s) link between an access node and an exchange.

− V5.2, which provides for concentration where there is not enough bearer channels in the aggregate link(s) to accommodate all subscribers at the same time. A single V5.2 interface can control up to 16 E1 links at once and can include protection of the signaling channels.

• Provides analog telephone access, ISDN basic rate access, ISDN primary rate access

• Supports the following Layer 3 protocol:

− Control protocol, which controls the setup and basic management of the V5 link from the Access Network (AN) to the Local Exchange (LE).

− PSTN protocol, which translates the analogue signals for POTS into a digital form for transfer from AN to LE. (I.e. off-hook, digit dialing, on hook etc).

− BCC protocol, In V5.2 since any channel could be allocated to the call, this protocol is assigned the job of managing the assignment of channels to a call. (Only in v5.2)

− Link control protocol - For managing up to 16 E1 links. It controls the status of the links (i.e. in service/out of service) (Only in v5.2)

− Protection protocol - Used in V5.2; this protocol is duplicated on two or more channels on two or more links and provides instant failover in the event of one failing (Only in v5.2)

• Compliant to the relevant ETSI and ITU-T standards:

− ETSI EN 300 347-1 (1999-12-28). V interfaces at the digital Local Exchange (LE); V5.2 interface for the support of Access Network (AN); Part 1: V5.2 interface specification

− ETSI EN 300 324-1 (2000-04-08). V interfaces at the digital Local Exchange (LE); V5.1 interface for the support of Access Network (AN); Pat 1: V5.1 interface specification

− ITU-T G.964 V-Interfaces at the digital local exchange (LE) - V5.1 interface (based on 2048 kbit/s) for the support of access network (AN)

− ITU-T G.965 V-interfaces at the digital local exchange (LE) - V5.2 interface (based on 2048 kbit/s) for the support of access network (AN)



3.1.2.2 H.248/Megaco protocol

This section describes the relevant features on H.248/Megaco protocol.

• allows a Media Gateway Controller to control gateways in order to provide VoIP functionality (including voice/fax calls) between PSTN-IP or IP-IP networks

• Supports IPV4, will support IPV6 smoothly in the future

• Provides the media and call control functionality

• Collaborates with IUA/SCTP to provide ISDN BRI and PRI access

• supports ephemeral terminations that sink and source RTP traffic

• supports physical terminations including analog and ISDN access

• Supports IP QoS control and monitoring

• Supports Adaptive-rate based MGC overload control

• Provides real time statistics reporting

• Supports up to 4K digitmap

• supports autonomous transition from Audio Mode to G.711-based VBD Mode (according to ITU-T Recommendation V.152) upon detection of fax and modem

• DTMF digits send in band using voice codecs

• supports the procedures defined in RFC 4733 to generate, detect and forward DTMF digits

• Compliant to the relevant ITU-T and ETSI standards

− ITU-T H.248.1 gateway control protocol: V1/V2/V3, including H.248 Sub-series

− ETSI ES 283 002 Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN);H.248 Profile for controlling Access and Residential Gateways

3.1.2.3 SIP Protocol

This section describes the relevant features on SIP protocol.

• Supports the connection to common SIP server or Softswitch

• Supports the connection to IP Multimedia Subsystem (IMS) defined by 3GPP



• Supports two-party or multiparty sessions consisting of one or several media streams.

• text-based using the UTF-8 char set known as a transformation format of ISO 10646 defined in RFC 2279

• Support hook-flash to implement the relevant supplementary services

• Runs on top of UDP protocol

3.1.3 Narrowband Service Capability

3.1.3.1 PSTN/ISDN Service

This section lists the narrowband services ZXMSG 5200 supports, but not limit to these.

• Basic PSTN/ISDN voice service

• Pulse/DTMF Dialing

• Fax/Modem Dialing service

• Voice mail service

• PABX Service with Direct Inward Dialing (DID) facility

• IP Centrex Service

• Supplementary Service

− Call Forwarding on Busy (CFB)

− Call Forwarding Unconditional (CFU)

− Call Forwarding on No Reply (CFNR)

− Calling Line Identification Presentation (CLIP)

− Calling Line Identification Restriction (CLIR)

− Abbreviated Dialing (AD)

− Absentee Service (AB)

− Automatic Call Memory Service (ACM)

− Automatic Redial Service (AR)

− Call Waiting (CW)



− Collection Call Screening (CCS)

− Distinctive Ringing Service (DR)

− Do-Not-Disturb Service ( DND)

− Hot Line Service (HOT)

− Outgoing Call Screening (OCS)

− Wake-Up Service

− Three Party Call Service

− Conference Call Service

3.1.3.2 Leased Line Service

This section describes the relevant features on leased line service, Figure 2 shows the leased line solution for ZXMSG 5200.

Figure 2 Leased Line Services

In this network scenario, ZXMSG 5200 provides:

• V.24 (also known as RS232), V.35, G.703 interfaces for Leased line service.

• 2W/4W voice frequency (VF) leased line

• Subrate speeds, up to 115,200 bit/s

• 64 kbit/s, N*64 kbit/s, and 2048 kbit/s



3.1.4 Voice Quality Techniques

ZXMSG5200 ensures voice service quality through:

• Supports the echo cancellation function meeting the G.165/G.168 requirements

• Supports the VAD (voice activity detection) function

• Supports the CNG (comfort noise generation) function

• Supports Packet Loss Concealment (PLC)

• Jitter buffer dynamic adjustment

• Tx/Rx gain control

• Differentiated priority & SLA calls. ZXMSG5200 can support service priority based on physical port or emergency number (such as 110, 119 etc) to guarantee better quality for higher priority service.

− Physical port priority: VIP customer port is set higher priority while ordinary customer port is set lower priority so the ordinary customer will get busy tone in case of traffic congestion.

− Emergency number priority: No matter from VIP or ordinary customer, emergency call always can call successfully even when MSAN is overloaded.

ZXMSG5200 also adopts the following measures to separate VoIP stream and broadband stream to grantee the voice service quality:

• Different VLANs for VOIP media, signaling, management, broadband stream

• Different Class of Service (CoS) value for VOIP media, signalling, management, broadband stream

• Different Type of Service (ToS) value for VOIP media, signalling, management, broadband stream

• Different Differentiated Service Code Point (DSCP) value or VOIP media, signalling, management, broadband stream

3.1.5 Reliability

ZXMSG 5200 ensures reliability through:

• Supports authentication when connecting to MGC



• Dual Homing that ZXMSG 5200 is configured to connect four MGCs, one is active and the others are standby. When the active MGC is down, ZXMSG 5200 can automatically register to standby MGC without service interruption.

• Dual uplink protection using Rapid Spanning Tree Protocol (RSTP), Link Aggregation, Virtual Router Redundancy Protocol (VRRP) techniques

• Self-switch function (internal switching without MGC), when the connection to MGC is broken or MGC is down, ZXMSG 5200 can support self-switch so that subscribes in the same ZXMSG 5200 can communicate. When the connection to MGC is recovered, ZXMSG 5200 can automatically register to MGC to restore normal state.

• Escape channels that ZXMSG 5200 support local exchange & MGC dual homing, when the connection to MGC is broken or MGC is down, ZXMSG 5200 can connect to local exchange through V5 interface as lifeline. V5 and H.248 also can be used at the same time in load sharing mode.

3.2 Broadband Functions This section describes the broadband functions of ZXMSG 5200.

3.2.1 XDSL Features

This section describer XDSL features of ZXMSG5200.

• ADSL features

− Comply with ITU-T G.992.1, G.992.2, ANSI T1.413 issue 2 and ITU-T G.996.1

− Asymmetric transmission mode. The uplink rate is 1 Mbps and downlink rate is 8 or 9 Mbps.

− Perform line capture for each ADSL user line so that external test equipment performs a line test.

− Support adaptive rate for actual lines.

− Support fixed settings of actual line rates.

− Support good interworking between ADSL modems adopting major stream chips such as Connexant, BCM, and TI.

− Remote maintenance and remote software upgrade.

− Line alarm maintenance and message report function.

• ADSL2+ features



− ADSL2/ADSL2+ is compatible with G.992.3 (ADSL2), G.992.4 (Splitterless ADSL2) and G.992.5 (ADSL2+)

− ADSL2+ supports those operation modes: annex A, annex B, annex C, annex I, annex J and annex M

− ADSL2+ provides 24 Mbps downstream and 1 Mbps upstream. If ADSL2 annex J is used, the uplink rate is increased to 2.3 Mbps

− Support the SELT function (single-ended test)

− Support the DELT function (dual-ended test)

− Support energy-saving characteristics

− Support seamless rate adaptation (SRA) function

− The ADSL2+ supports fast start mode. The line synchronization time is less than 3 seconds.

− Support 1-bit constellation modulation function.

− Support good interworking between ADSL2+ modems adopting major stream chips such as Connexant, BCM, and TI.

− Bit switching

− Pilot channel floating

− Support multi copper pair bonding as defined by ITU-T G.998.1 for ATM based multi bonding

• VDSL2 features

− VDSL2 Comply with ITU G.993.2, G.997.1, G994.1 standard and backward compatible with ITU G.992.1, G.992.3, G.992.5 standard

− Support profiles of 8a, 8b, 8c, 8d, 12a, 12b, 17a and 30a

− Perfect PSD control,

− DMT modulation and demodulation

− Support STM and IEEE802.3ah PTM mode.

− RFI Notching and Custom PSD

− UPBO (Upstream Power Back Off)

− DPBO (Downstream Power Back Off)

− Dual latency



− Support multi copper pair bonding as defined by ITU-T G.998.1 for ATM based multi bonding and ITU-T G.998.2 for Ethernet based multi bonding.

− Support ATM mode and backward compatible with ADSL/ADSL2+

− Maximum downlink rate at 100Mbps and uplink rate at 100Mbps

− Support the SELT function (single-ended test)

− Support the DELT function (dual-ended test)

− Support 1~15 bit constellation modulation function

− Support Impulse Noise Protection (Up to 16 symbol)

−

• SHDSL features

− Comply with ITU-T G.991.2 and ANSI T1E1.4/2001-174 standards

− A single line pair of SHDSL support integer multiple of all 64kbps rates between 192Kbps and 2.3Mbps for uplink and downlink transmission. For two pairs of twisted pairs, the rate is between 384 kbps to 4.6 Mbps.

− The synchronization time is less than 60 seconds.

• SHDSL.bis features

− Comply with ITU-T G.991.2, ITU-T G.991.2 (2004) (G.SHDSL.BIS), ETSI TS 101 524 V 1.2.1, and ETSI TS 101 524 V 1.2.2 standards

− Support TCPAM 16 and TCPAM32

− Support ATM G.SHDSL, transmission rates from 192 kbps to 2.3 Mbps (one pair) or 384 kbps to 4.6 Mbps (2-pairs)

− Support G.SHDSL.bis

− Support G.SHDSL.bis M-pair bonding, up to 4-pairs. Transmission rate up to 5.69 Mbps on 2-wire, 11.38 Mbps on 4-wire, and 22.76 Mbps on 8-wire.

3.2.2 xPON features

This section describer xPON features of ZXMSG5200.

• EPON features

− Comply with IEEE 802.3-2005 standards

− Single PON port supports 32 branches (20 KM) and 64 branches (<5 KM).



− Downlink wavelength is 1490 nm, uplink wavelength is 1310 nm and CATV wavelength is 1550 nm.

− Downlink rate can reach up to 1.25 Gbps. The uplink transmits data stream in Ethernet packet mode and reaches up to 1.25 Gbps.

− Support MPCP

− Perfect DBA functions

− Voice, data and video services

− Operation, maintenance and management functions

• GPON features

− Comply with ITU-T G.984 series standards

− Support CLASS B+ (28db)

− The GPOI board supports 4 GPON interfaces. The upstream rate and the downstream rate are 1.244Gbps and 2.488Gbps

− Support G.984.4 OMCI stack

− Support the functions of dynamical discovery, auto-registration and dynamical ranging to ONU/ONT

− Perfect DBA functions

− Support IGMP snooping, each PON supports 1k multicast groups

− Support DHCP option82

− Support AES-128 downstream encryption

− Support FEC

− Perfect OAM functionality.

3.2.3 Ethernet features

This section describer Ethernet features of ZXMSG5200.

• Comply with IEEE 802.3 standard

• 100 Mbps Fast Ethernet

• 1000 Mbps Gigabit Ethernet

• 10,000 Mbps Gigabit Ethernet ( uplink )



3.2.4 ATM features

This section describer ATM features of ZXMSG5200.

• Comply with TM4.1/I.371 standards

• Support CBR/VBR-rt/VBR-nrt/UBR/UBR+ services

• Support vlan services based on ATM pvc

• ATM OAM function

3.2.5 IMA features

This section describer IMA features of ZXMSG5200.

• Comply with AF-PHY-0086.001

• IMA group with E1 interface

3.2.6 PWE3 features

This section describer PWE3 features of ZXMSG5200.

• Comply with RFC 3916, RFC 3985, RFC 4197, RFC 4447, RFC 4553, ITU-T Y.1413 standards

• Support E1/T1 over SAToP (RFC4553)

• Support CESoPSN (RFC5086)

• Support PWE3 over Ethernet

• Support PWE3 over UDP

• Support PWE3 over MPLS

• Support PWE3 over L2TPv3

• Support PWE3 Control Word(RFC4385)

• Support static PWE3 tunnel

• Support PWE3 label distribution using LDP(RFC4447)



3.2.7 L2 Features

This section describer L2 features of ZXMSG5200.

• L2 switch based on VLAN+MAC, based on L2 switching according to IEEE 802.3

• MAC Address Learning and Address aging automatically, Support view the MAC address table in the switching chip

• Port MAC Address Limit Function

• Virtual Mac

• Logical Port Broadcast Switch

• Broadcast/multicast limit function

• VLAN, Port-Based VLAN Meeting IEEE802.1Q Standards

• SVLAN (QinQ), includes VLAN stacking and double-tag

• PVLAN ensure L2 isolation in the same VLAN, based on port for user isolation

• 1:1 VLAN. support a downstream mapping between S-VLAN and C-VLAN pair and port, and be able to disable MAC address learning for 1:1 VLANs

• Protocol based VLAN to address different services on a single user port,

• TRUNKING/LACP, provide the TRUNKING function for one to eight ports and support LACP.

• STP/RSTP/MSTP, support the STP protocol and follow the IEEE802.1D/D17 1998 standard

• Port enabling control, support subscriber port enabling control to provide a basis for user management.

• Flow control function under Full-/Half-Duplex Mode at Ethernet Port. The system coordinates the rate of the data frame from the opposite side by sending a PAUSE control frame to set flow control status for an Ethernet port.

• VBAS Protocol, Support backward learning for MAC addresses by BAS

3.2.8 L3 Features

This section describer L3 protocol features of ZXMSG5200.

• IPv4 Protocol Stack



− ICMP PING

− TraceRoute

− ARP/Proxy ARP/Static ARP/RARP

− Super VLAN

− FTP Client/TFTP Client

− DHCP Server/DHCP Relay/DHCP Proxy

− TCP/UDP

− Telnet Server/Telnet Client

− SSHv1/v2

− RADIUS Client

− TACACS+ Client

− SNMP V2

− BOOTP

− NTP

− DNS

− RSVP

• IPv4 Routing

− Static Routing

− RIPv1/v2

− OSPFv2

− ISIS

− BGPv4

• IPv4 Multicast Routing

− IGMPv1/v2

− PIM-SM and PIM-DM



3.2.9 IPTV Features

ZXMSG5200 perfectly supports IPTV service through:

• IGMP V1/V2/V3

• IGMP proxy, acts as IGMP router/host

• IGMP snooping, snoops IGMP protocol communication, and copies and transmits message packets to CPU for analyzing

• Multicast VLAN, support up to 4 Multicast VLANs

• Multicast channel access control (CAC) supports controlling users’ multicast access rights.

• Multicast channel preview (PRV) supports permitting users to view some channel contents before they order these channels

• Multicast channel call detail record (CDR) supports recording the channel access activities of each user automatically.

• Multicast service management system (SMS) supports managing the channel access right setting and update, CDR records forwarding and providing interfaces to OSS.

• Fast Leave enabling/disabling functionality supports permitting/forbidding user to quickly leave a multicast channel for another channel.

• Multicast channel pre-join functionality supports preliminary join of multicast channel in MSAN, even though no user apply this channel

• Group user limitation functionality limits the number of the multicast groups joined concurrently from user requests

• Multicast sources guard, the user's port is forbidden acting as multicast server

• Multicast service enabling/disabling functionality can be done based on the whole system or per user port.

• Suppressing illegal multicast packets functionality supports controlling some illegal multicast packets and dropping them.

• Channel package is a collection of some multicast channels with different access rights, and it can be applied into any user port.

• Support 1024 multicast IPTV channels.



3.2.10 QoS

This section describes the QoS features of ZXMSG5200.

• Traffic classification, support traffic classification based on port, PVC, VLAN/SVLAN, IEEE802.1p CoS and Ethernet type ( e.g. IPoE, ARP, RARP), MAC address, IP address, IP type, DSCP priority and TCP/UDP port. The classification engine extracts the 32 bytes in the first 80 bytes information of the packet header.

• Network-side support 8 queues

• User-side support 8 queues

• Rate limitation, support traffic-based rate limitation on user port and Ethernet uplink port, upstream and downstream, based port/VLAN/COS,

• Queue scheduling algorithm, SP, WRR or SP and WRR mix

• COS to DSCP mapping

• DSCP to COS mapping

• 802.1p priority（COS）mapping to Queues

• Priority setting based on port, includes default 802.1p and forced 802.1p setting based on port

• Priority setting based on PVC, include default C-PRIO, trusted C-PRIO, forced C-PRIO, C-PRIO remarking, forced S-PRIO setting based on PVC

• Trust or un-trust 802.1p per port, trust 802.1p of ingress packets and transfer them transparently, or un-trust 802.1p of ingress packets and modify the 802.1p value.

• Traffic policy and metering

• Traffic marking, modify DSCP or 802.1P field

• Congestion avoidance: ED/RED/WRED

• Traffic shaping

• Differentiate service from CPE

− According to multiple PVC,

− According to 802.1P in one PVC

− According to VLAN ID in one PVC



3.2.11 Security Features

This section describes the security features of ZXMSG5200.

• Broadcast/multicast handling, limiting the rate of broadcast and multicast storms in the upstream and downstream on a per port basis (user port and Ethernet uplink port)

• Static MAC address

• MAC address filtering, include source MAC or destination MAC filter, which can allow/deny the access from/to special devices.

• User ports source IP bounding and source MAC bounding

• MAC address flooding, limit the number of source MAC learned from a given bridged port in order to prevent the source MAC flooding attacks.

• MAC address spoofing and IP address spoofing.

• MAC Forced Forwarding

• Broadcast supervision per VLAN

• PPPoE、PPPoA、IPoE、IPoA auto sensing function on a per port basis.

• PPP/DHCP Filtering

• DHCP snooping, DHCP snooping is a DHCP security feature that provides security by filtering un-trusted DHCP messages and by building and maintaining a DHCP snooping binding table. An un-trusted message can be received from outside the network or firewall and that can cause traffic attacks within the network.

• DHCP source guard. DHCP source guard prevents IP spoofing by allowing only the IP addresses that are obtained through DHCP snooping on a particular port. This filtering limits the ability of a host to attack the network by claiming a neighbor host's IP address.

• DHCP rate limit, avoid the DHCP attack from untrusty user

• DHCP relay which is L2 relay

• IGMP Rate limit

• Port Mirroring

• Packet filter/ACL, based on L2,L3 and L4 related information

• Port isolation, PVLAN ensure L2 isolation in the same VLAN



• Hitless-Failover. Packet Forwarding be maintained within 50ms during Primary Control Module failover and Redundant Control Module takes over

3.2.12 Maintainability Features

ZXMSG5200 also ensures system security for maintenance through:

• ACL for management, permit or deny special IP packets accessing the system.

• Security log, record any activities on configuration

• Traffic limitation for CPU interface keep CPU in easy state to handle other things

• User and password management provide the authentication of the user who want to login, the authentication can be local or remote.

• Remote upgrade and restart

• Configurable IP/MAC of inband/outband management

• NTP protocol

• Backup for version ensures the security and reliability of the version

• SSH v1/v2, and radius client support

• SELT/DELT

• ATM OAM loop back test

− F4 segment and end-to-end

− F5 segment and end-to-end

− Bi-directional

• Modem remote management. TELNET, HTTP and SNMP for modem remote management. This functionality can obtain the running information of modem, configure parameters of modem and test network link status, especially at troubleshooting a modem failure.

• Ethernet OAM conform to ITU-T Y.1731: OAM Functions and Mechanisms for Ethernet Based Networks and IEEE 802.1ag

• Alarm and statistic in case of port rate less than threshold

• Output interface for audible and visual alarm



3.2.13 User Access & Port Identification

ZXMSG5200 support user access protocol

• IPoE/PPPoE

• IPoA/PPPoA

• PPPoA to PPPoE conversion

ZXMSG5200 supports user port identification to trace and locate illegal users through:

• VBAS

• DHCP Option82

• PPPoE intermediate

• Stacking VLAN



4 System Architecture

4.1 Working Principle ZXMSG 5200 operating principles are shown in Figure 3, the dotted line frames present the card functions. The whole system includes two switching networks:

• TDM switching network is used for traditional POTS, ISDN and DDN applications

• Ethernet switching network is used for IP packet switching and multiplexing.

Figure 3 ZXMSG 5200 Operating Principles

TDM switching

Ethernet switching POTS

xDSL/xPON

Voice compressing

CNIC

( NAT module )

IP network

ICS

MPR ICS upper sub-card

ZXMSG 5200 working principle is as follows:

• Narrowband traffic from POTS interface enters TDM switching module of main control card (i.e. ICS).

• TDM switch performs circuit-switching on the voice signals and send them to voice compression module.

• MPRB board which performs voice compression function converts voice traffic into IP packets and send them to Ethernet switching module.

• Ethernet switching chip switches the IP packets and send them to CNIC sub-card for network address translation.

• After network address translation, IP packets enter the IP network through an uplink interface after Ethernet switching.

• Broadband data from xDSL or xPON interface enters main control card Ethernet switching chip and directly goes to IP network through an uplink interface.



4.2 Hardware Architecture

4.2.1 Hardware Structure

ZXMSG 5200 hardware system consists of a control unit and subscriber units. The control unit implements system functions and service access expansion unit implements expansion to serve more subscribers. ZXMSG 5200 can support four user units in star topology at most. Control unit also can support subscriber’s access.

The overall hardware structure of the ZXMSG 5200 is shown in Figure 4:

Figure 4 The Hardware Structure of the ZXMSG 5200

LC: Line Card, including narrowband line card and broadband line card TSLC: Test Subscriber Line Card ICS: Control and Switch board, including EICS, GIS, GISX, etc MPRB: Packet processing and resource board CNIC: Network address translation module

• The system can either receive the BITS clock signal or extract a clock from the E1 interface of V5. Then the Control Switch board provides 8KHz or 2MHz clock to each board and the TSLC.

• The TDM bus performs narrowband voice multiplexing and DDN service multiplexing. The two Control Switch boards use an active/standby mode to connect with each board and the TSLC.



• The data bus performs multiplexing and switching for Ethernet-based packets.

• Multicast bus is especially designed for IPTV multicast service.

4.2.2 Cabinets

4.2.2.1 Cabinets Specification

ZXMSG 5200 uses various indoor and outdoor type cabinets:

• Indoor type

− 19D06H20 (19 inch standard rack)

− 1500E

− ONU100

• Outdoor type

− OUT40E

− OUT20E

− OUT60

− OUT50F

− OUT50C

− OUT50D

Table 2 shows cabinet details.

Table 2 ZXMSG 5200 Cabinets

Maxim number of Ports Line access type

Cabinet type Cabinet

Dimensions (Height * Width * Depth, Unit mm)

POTS only

ADSL only(32 ports card)

POTS & ADSL combo

19D06H20 2000*600*600 1856 1856 POTS: 928 ADSL: 928

1500E (MDF & Power Integrated Rack)

2000*800*600 704 704 POTS: 352 ADSL: 352

Rear access

Indoor

ONU100 421*218*456 128 128 POTS: 64 ADSL: 64






POTS only

ADSL only(32 ports card)

POTS & ADSL combo

OUT40E 1600*1300*650 1088 1088 POTS: 544 ADSL: 544

OUT20E 1850*1950*650 1856 1856 POTS: 928 ADSL: 928

OUT50F 1100*700*400 320 320 POTS: 160 ADSL: 160

Outdoor

OUT50C/OUT50D 1100*700*400 192 192 POTS: 96 ADSL: 96

19D06H20 2000*600*600 1088 1088 POTS: 544 ADSL: 544

Indoor IN1500E(MDF & Power Integrated Rack)

2000*800*600 704 704 POTS: 352 ADSL: 352

OUT40E 1600*1300*650 704 704 POTS: 352 ADSL: 352

OUT60 1600*1594*780 1088 1088 POTS: 544 ADSL: 544

Front access

Outdoor

OUT20E 1850*1950*650 1472 1472 POTS: 736 ADSL: 736

Note:

1. For the front access cabinet, the above capacity didn’t consider the slots occupied by test card TSLCD and environment & power monitoring card EPC.

2. 32 ports ADSL2+ card GAGL also can be used in the above cabinets.

4.2.2.2 Power Supply and Monitoring System

The power supply module is used to supply power to the equipment. Monitoring module is responsible for real time monitoring on temperature, humidity, smoke, flood, entrance control and secondary power.

1 ZXDU45 embedded power systems

In AC power supply mode switching power supply or embedded power systems must be configured depending on power consumption. ZXMSG 5200 will be configured with the built-in the ZXDU45/45A or ZXDU45/30A embedded power systems responding to the requirement.

ZXDU45 power module provides –48V power supply for other modules inside the cabinet. The ZXDU45 actually consists of three 15A switching powers and supports 1 + 1 and N + 1 protection. The ZXDU45 can be configured to be ZXDU45/45 A or ZXDU45/30 A on demand.



Table 3 lists major technical parameters of ZXDU45.

Table 3 Major Technical Parameters of ZXDU45

Cabinet Type

Outline dimensions 177 mm x 482.6 mm x 360 mm (Height x Width x Depth)

Weight 20kg

Rectifier

Input voltage: 154VAC to 300VAC Floating charge: 53.5V (adjustable) Equalized charge: 56.4V (adjustable) Broad frequency noise voltage: ≤ 50 mV (3.4kHz~150kHz) ≤ 20 mV (0.15MHz~30MHz) Discrete frequency noise voltage: ≤ 5 mV (3.4kHz~150kHz) ≤ 3 mV (150kHz~200kHz) ≤ 2 mV (200kHz~500kHz) ≤ 1 mV (0.5MHz~30MHz) Efficiency: ≥ 99% (on-load voltage: 30%~100%) Soft start time: 3s to 8s

AC input

Voltage: single-phase three wire 130VAC to 300VAC Frequency: 45Hz to 65Hz Rated current: 12A Maximal current: 25A Efficiency: ≥ 99% (full load)

DC output

Voltage: 48V (42V~58V continually adjustable) Current: 45A (full load) Phone weighted noise: ≤ 2 mV Peak-to-peak noise voltage: ≤ 100 mV (20MHz bandwidth) Efficiency: ≥ 90% (full load) Security specifications: IEC950 Standards

Electromagnetic compatibility Comply with EN5502 A Level Standards

Reliability MTBF: ≥ 100000h

2 Built-in Storage Battery

As a backup power of combined power supply and uninterrupted power system (UPS), the storage battery plays an important role in a power supply system for telecommunications. It provides power supply for telecommunication equipment when its AC commercial power fails.

In the ZXMSG 5200 system, different racks adopt different storage battery devices due to power consumption. Table 4 lists built-in storage battery used in ZXMSG5200 and 0lists its parameters.



Table 4 ZXMSG 5200 Built-in Storage Battery

ZXMSG 5200 Rack Storage Battery Capacity of Storage Battery

1500E/19”standard rack (600*600) 6-GFM-100 (T) 100AH

OUT40E 6-GFM-100 (T) 100AH OUT20E 6-GFM-200 (T) 200AH OUT50 6-GFM-38 38AH OUT60 6-GFM-100 (T) 100AH

Table 5 Major Technical Parameters of Built-in Storage Battery

Outline Dimensions Series Name Battery

Model Rated Voltage (V)

Rated Capacity (Ah)

Length (mm)

Width (mm)

Height (mm)

Weight (kg)

6-GFM-T series (12V communication series)

6-GFM-100T 12 100 403 169 215 35.05

6-GFM series (12V series)

6-GFM-38 12 38 197 165 170 14.65

3 Environment and Power Monitoring

Monitoring module is responsible for real time monitoring on temperature, humidity, smoke, flood, entrance control and secondary power. The functions of monitoring module are as follows:

• It tests power voltage.

• Environment parameters

− temperature

− humidity

− smoke

− flood

− entrance control

• Theft proof and fire proof alarms.

It implements functions such as collecting environment and power data, processing man machine commands, reporting alarm data and real-time data.

Table 6 describes different types of power and monitor module.



Table 6 Description of Power & Monitor Types

Type Description

Centralized Monitoring Unit CSV&SF

The CSV&SF is a standard 1U unit shelf It is used in the rear access scenario.

Environment Power Monitoring Board EPC&SF

The environment and power monitoring board EPC&SF is used in the front access scenario.

Environment Monitoring Board EMB&SF

The environment and power monitoring board EMB&SF is used for outdoor-type OUT50 rack.

4.2.3 Shelves

Shelf is an empty box in which different cards are plugged-in. ZXMSG 5200 has one main and four expansion shelves. Both the main shelf and slave shelves use the same shelf type based on the selection of cabinet, access type and power redundancy requirement. ZXMSG 5200 has the following shelf types:

• Standard shelves

− Single power rear access standard shelf (6U)

− Dual power rear access standard shelf (6U)

− Dual power front access standard shelf (9U)

• ONU100 mini shelf

• OUT50F shelf

• OUT50C mini shelf

• OUT50D mini shelf

Among the standard shelves, rear access shelf can be installed in indoor cabinet 19D06H20, 1500E and outdoor cabinet OUT40E, OUT20E. And front access shelf can be installed in indoor cabinet 19D06H20, 1500E and outdoor cabinet OUT40E, OUT60, OUT20E. ONU100 mini shelf is especially is ONU100 cabinet, and OUT50F/C/D mini shelf is especially for OUT50F/C/D.

4.2.3.1 Single Power Rear Access Standard Shelf

Single power rear access standard shelf offers 17 effective slots for holding major boards such as POWER H board, user interface boards, control switching board ICS, VoIP processing board MPRB, and test board TSLC. The POWER H can work together with the POWER H in another unit in the same rack/cabinet to make inter-layer power backup.



All kinds of user interface card can be mix-inserted.

It uses MICS backplane. Shelf dimensions are 266.5 mm * 482.6 mm * 318.5 mm (Height * Width * Depth).

Figure 5 shows the shelf structure of control unit and Figure 6 shows shelf structure of user unit.

Figure 5 Structure of Control Unit of Single Power Rear Access Shelf

1~2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

P O W E R H

LC

L C

L C

LC

LC

LC

I CS

I CS

MPRB

MPRB

LC

L C

L C

L C

TSLC

Figure 6 Structure of User Unit of Single Power Rear Access Shelf

1~2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

P O W E R H

LC

L C

L C

LC

LC

LC

I CS

I CS

LC

LC

LC

L C

L C

L C

LC: Line Card, including narrowband line card and broadband line card TSLC: Test Subscriber Line Card ICS: Control and Switch board, including EICS, GIS, GISX, etc MPRB: Packet processing and resource board POWERH: Power supply board

4.2.3.2 Dual Power Rear Access Standard Shelf

Dual power rear access standard shelf offers 16 effective slots for holding major boards such as POWER K board, user interface boards, control switching board ICS, VoIP processing board MPRB, and test board TSLC. The two POWER Ks can work as redundancy.

Figure 7 shows the shelf structure. Dual power rear access standard shelf has two POWER K cards; one is used for hot backup. It uses MBSL backplane. Shelf dimensions are 266.5 mm * 482 mm * 318.5 mm (Height * Width * Depth).



Figure 7 Structure of Double Power Rear Access Shelf

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

P O W E R K

LC

L C

L C

L C

LC

LC

I CS

I CS

MPRB

MPRB

LC

L C

L C

T S L C

P O W E R K

LC: Line Card, including narrowband line card and broadband line card TSLC: Test Subscriber Line Card ICS: Control and Switch board, including EICS, GIS, GISX, etc MPRB: Packet processing and resource board POWERK: Power supply board

4.2.3.3 Dual Power Front Access Standard Shelf

Dual power front access stand shelf adds area of cable and correspondence front access extending boards compared to the dual power rear access standard shelf.

Figure 8 shows the shelf structure. Shelf dimensions are 399.8 mm * 482 mm * 318.5 mm (Height * Width * Depth).

Figure 8 Structure of Double Power front Access Shelf

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

P O W E R K

LC

L C

L C

LC

LC

LC

I CS

I CS

MPRB

MPRB

LC

L C

L C

T S L C

P O W E R K

Area of cable

LC: Line Card, including narrowband line card and broadband line card TSLC: Test Subscriber Line Card ICS: Control and Switch board, including EICS, GIS, GISX, etc MPRB: Packet processing and resource board POWERK: Power supply board

4.2.3.4 ONU100 Mini Shelf

The ONU100 small-capacity control unit of the ZXMSG 5200 adopts a single-shelf solution. It has four LC board slots, one TSLC board slot, one ICS board slot, and one MPRB board slot. It can provide 32 x 4 channels of analog users and 32 x 4 channels of xDSL users. Analog user boards and digital user boards can be inserted in the four slots in an intermixing way. The IST board can be inserted into slot LC4. The board arrangement of the user unit is shown in Figure 9.



The POWAC is used to provide primary and secondary powers and the POWDC is used to provide DC powers. Figure 9 shows ONU100 shelf structure.

Figure 9 ONU100 mini Shelf

1 2 3 4 5 6 7

L

C

L

C

L

CLC

G

IS

M

PRB

T

S

L

C

POW AC/POW DC

1 2 3 4 5 6 7

L

C

L

C

L

CLC

G

IS

M

PRB

T

S

L

C

POW AC/POW DC

LC: Line Card, including narrowband line card and broadband line card TSLC: Test Subscriber Line Card GIS: Control and Switch board, including EICS, GIS, GISX, etc MPRB: Packet processing and resource board POW AC/POW DC: Power supply board

4.2.3.5 OUT50F Shelf

OUT50F shelf has 2 layers as shown in Figure 10. Among it PPC is primary power processing card while PWRK is secondary power processing card. OUT50F shelf contains 10 subscriber line cards.

Shelf dimensions are 1100 mm * 700 mm * 400 mm (Height * Width * Depth).

Figure 10 OUT50F Shelf Structure

LC: Line Card, including narrowband line card and broadband line card TSLC: Test Subscriber Line Card



ICS: Control and Switch board, including EICS, GIS, GISX, etc MPRB: Packet processing and resource board EMB: Environment Monitor board POWERK: Power supply board PPC: primary power card

4.2.3.6 OUT50C Mini Shelf

OUT50C shelf has 2 layers and total 20 slots. Shelf dimensions are 663 mm * 333 mm * 355 mm (Height * Width * Depth).

Figure 11 shows the OUT50C shelf configuration. OUT50C is dual power card version.

Figure 11 OUT50C Shelf Structure

LC: Line Card, including narrowband line card and broadband line card TSLC: Test Subscriber Line Card ICS: Control and Switch board, including EICS, GIS, GISX, etc MPRB: Packet processing and resource board EMB: Environment Monitor board POWERG: Power supply board PPC: primary power card

4.2.3.7 OUT50D Mini Shelf

OUT50D shelf has two layers and total 16 slots. Shelf dimensions are 663 mm * 323 mm * 355 mm (Height * Width * Depth).

Figure 12 shows the OUT50D shelf configuration. OUT50D is single power card version.

Figure 12 OUT50D Shelf Structure



LC: Line Card, including narrowband line card and broadband line card TSLC: Test Subscriber Line Card ICS: Control and Switch board, including EICS, GIS, GISX, etc MPRB: Packet processing and resource board EMB: Environment Monitor board POWERH: Power supply board PPC: primary power card

4.2.4 Cards

ZXMSG 5200 card types are as follows:

• Control and switching cards

• Packet processing and resource cards

• Uplink sub-cards

• Analogue line cards

• Digital line cards

• DSL subscriber cards

• Ethernet cards

• xPON line card

• Integrated voice data subscriber cards

• Power cards



• Other cards

4.2.4.1 Main Control and Auxiliary Cards

Table 7 lists control and switching cards and their description.

Table 7 Control and Switching Cards

Card Full Name Functions Port & Description

ICS Integrated Control & Switching Card

System controls and switching

256 VLANs; two FE or one GE plus one FE uplink ports; FE star cascading between shelves; four E1

EICS Enhanced Integrated Control & Switching Card

All ICS functions

4 K VLANs; two FE or one GE plus one FE uplink ports; FE star cascading between shelves; four E1

GIS

Giga Ethernet Integrated Control and Switching Card

All ICS/EICS functions

4 K VLANs; two GE plus two FE uplink ports; GE star cascading between shelves; four E1

GISE

Simplified Integrated Control and Switching Card

System controls and switching

Only TDM switch on GISE for pure narrowband application; four E1

GISX XGE Integrated Control and Switching Card

All GIS functions

4 K VLANs; two XGE uplink ports; 4K*4K TDM switch

Table 8 lists the packet processing and resource cards.

Table 8 Packet Processing and Resource Cards


MPRB Packet processing and resource card type B

VOIP and resource card for voice call; 240 channels

-

VOPS Voice Processing Sub-card

Each MPRB has 3 slots for VOPS sub-card which performs coding/decoding and compression for 40/80/160-channel VoIP and FoIP.

-

Table 9 lists the net address translation card.



Table 9 Net Address Translation Card


CNIC Net Address Translation Card

The CNIC is plugged in the control and switching board to perform network address translation.

-

MAPP Net Address Translation Card All CNIC functions -

Table 10 lists rear access uplink sub-cards and their description.

Table 10 Rear Access Uplink Sub-cards

Shelf type

Main control card

interface sub-card

Uplink resources provided by interface sub-card

Main-slave shelf cascading resources provided by interface sub-card

GISX GEI 2*10GE (fiber mode, by front panel)

4*GE unicast＋4*8MHW＋1*GE multicast Cascade four slave shelves in star topology. GE is for broadband service while 8MHW is for narrowband service. Multicast GE is shared by all shelves.

GIS GEI 2*GE (fiber mode) +2*FE (electrical mode)

4*GE unicast＋4*8MHW＋1*GE multicast Cascade four slave shelves in star topology. GE is for broadband service while 8MHW is for narrowband service. Multicast GE is shared by all shelves.

EUX 2*FE (electrical mode)

FEI 2*FE (fiber mode)

GEUF/FE 1*GE (fiber mode)+1*FE (electrical mode)

Main shelf

EICS/ICS

GEUT 1*GE (electrical mode)

4*FE＋4*8MHW Cascade four slave shelves in star topology, each slave shelf uses FE + 8MHW.

Slave shelf

Any type of control card

SUPI - Connecting main shelf with GE/FE (auto-adaptive) + 8MHW

Table 11 lists front access uplink sub-cards and their description.



Table 11 Front Access Uplink Sub-cards

Shelf type

Main control card

interface sub-card

Uplink resources provided by interface sub-card

Main-slave shelf cascading resources provided by interface sub-card

GIS/GISX IEBC/2/SS

2*GE(by sub-card) or 2*XGE(by pront panel)

4*GE unicast＋4*8MHW＋1*GE multicast Cascade four slave shelves in star topology, each slave shelf uses GE + 8MHW. Among them GE is for broadband service while 8MHW is for narrowband service. Multicast GE is shared by all shelves.

IEBB 2*FE (electrical mode)

Main shelf

EICS/ICS IEBB/1/SS

1*GE(fiber mode)+1*FE (electrical mode)

4*FE＋4*8MHW Cascade four slave shelves in star topology, each slave shelf uses FE + 8MHW.

GIS IEBC -

4*GE unicast＋4*8MHW＋1*GE multicast. In fact only 1*GE unicast＋1*8MHW＋1*GE multicast is used to connect main shelf.

Slave shelf

ICS/GISE IEBB - 4*FE＋4*8MHW. In fact 1*FE＋1*8MHW is used to connect main shelf.

4.2.4.2 Narrowband Line Cards

Table 12 lists analog line cards and their description.

Table 12 Analog Line Cards

Card Full Name Function Port & Description

ALC Analog Line Card POTS access 32 analog subscriber ports

RALC Polarity Reversed Analog Line Card

POTS access and reversed polarity

32 analog subscriber ports

FLC Far-end Line Card

POTS access, reversed polarity, 12 KC/16 KC metering pulse and long distance functions

16 analog subscriber ports



Table 13 lists digital line cards and their description.

Table 13 Digital Line Cards

Cards Full Name Function Port & Description

DLCC Digital Subscriber Line Card

Basic rate interface for ISDN. Transceiving of 2B+D data and format conversion

2B+D channel and U interface function of the ISDN physical layer

AUDB Audio Interface Card

Converts analog signals into PCM digital signals and vice versa

Provides 8 audio interfaces to connect with the external equipment

HDB

High Speed Digital Subscriber Line Interface Card

Integration and subscriber function

Four TDM-based SHDSL interfaces Four uplink E1 interfaces

DIB

4.2.4.3 Broadband Line Cards

Table 14 lists DSL subscriber cards and their description.

Table 14 DSL Subscribers Cards


GADL ADSL Subscriber Line Card

ADSL subscriber access.

16 ADSL ports to implement ATM cell access, built-in splitter

GADL/2+ ADSL2+ Subscriber Line Card

ADSL2+ subscriber access.

16 ADSL2+ ports to implement ATM cell access, built-in splitter

GAGL ADSL2+ Subscriber Line Card

ADSL2+ subscriber access.

32 ADSL2+ ports to implement ATM cell access, without built-in splitter

GVDL VDSL2 Digital Subscriber Line Card

VDSL2 subscriber access.

16 VDSL2 ports, built-in splitter

GSDL

GE/FE Auto-adaptive Backplane Interface SHDSL Digital Subscriber Line Card

SHDSL subscriber access; conversion of ATM cells to Ethernet frames

16 SHDSL ports (ATM mode)



GSDLB

SHDSL.bis Digital Subscriber Line Card

SHDSL.bis subscriber access; 16 SHDSL ports

Table 15 lists Ethernet cards and their description.

Table 15 Ethernet Cards


GETI Ethernet Transform Card

Fast Ethernet access

Four fiber or electric 100 Mbps Ethernet ports

ETC Ethernet Transform Card

Fast Ethernet access

Two FE ports, in LC5/6 ETC provides 2FE(electric mode), in other slots, ETC provides one FE (Valid when control card is ICS/EICS/GIS)

GETC Giga Ethernet Transform Card

Giga bit Ethernet access

Two GE ports, in LC5/6 GETC provides 2GE, in other slots, GETC provides one GE (Valid when control card board is GIS)

Table 16 lists xPON card and its description.

Table 16 xPON Cards


EPOI EPON Interface Card long distance

OLT side related functions

One SC optical port connecting to 32 ONU of EPON (via ODN)

EPNI EPON uplink Card

ONT side related functions

One EPON uplink interface card, connecting to central office side EPON OLT equipment.

GPOI GPON Interface Card

OLT side related functions 4 GPON ports.

4.2.4.4 Other Cards

Table 17 lists integrated voice data subscriber card and its description.



Table 17 Integrated Voice Data Subscriber Cards


GILC/2+

Integrated Voice Data Subscriber Card

Integration of major ALC and ADSL2+ functions; and support of broadband and narrowband subscribers at the same time

16 ADSL2+ ports and 16 POTS ports;

Table 19 lists circuit emulation cards and their description.

Table 18 Circuit Emulation Cards


CEE Circuit Emulation E1 card

Transfer TDM data to Ethernet packet and vice versa Support structured E1/T1 and unstructured E1/T1 service emulation

16*E1/T1 ports

Table 19 lists power cards and their description.

Table 19 Power Cards

Cards Full Name Function Description

POWER H Power Card Secondary power and ringing current

Power connector on the backplane

POWER K Power Card Secondary power and ringing current

Power connector on the backplane

POWER G Power Card Secondary power and ringing current

Power connector on the backplane. For OUT50C shelf

PPC - Primary power supply

For OUT50C ,OUT50D and OUT50F shelves

Table 20 lists the other cards and their description.

Table 20 Other Cards


ODTI Octal Digital Trunk Interface Card

Conversion of signals between two 8 Mbps HW and eight E1s

Eight E1 ports

TSLC Test Subscriber Line Card

PSTN/ISDN subscriber line test

Test ports on the backplane to connect subscriber buses




EPC Environment Power Control

Collections of environment alarm and power data; reporting local alarm and real-time monitoring data at the same time

-

EMB Environment Monitoring Board

Collections of environment alarm and power data; reporting local alarm and real-time monitoring data at the same time

Only for OUT50C, OUT50D and OUT50F.

4.3 Software Architecture Figure 13 shows the ZXMSG 5200 software structure. The ZXMSG 5200 software consists of the operation support subsystem, the bearer subsystem, the service subsystem, the protocol subsystem and the Operation & Maintenance interface subsystem.

Figure 13 ZXMSG 5200 Software Structure

4.3.1 Protocol Subsystem

The protocol subsystem consists of three parts:

• Universal protocol subsystem

• Broadband protocol subsystem

• Narrowband protocol subsystem



The universal protocol subsystem implements TCP protocol, UDP protocol, IP protocol, ICMP protocol, ARP protocol, RARP protocol, TFTP, FTP, HTTP, SNMP, Telnet etc.

The broadband protocol subsystem implements broadband protocols such as multicast, QoS, security, VLAN, STP/RSTP/MSTP etc.

Narrowband protocol subsystem includes V5, H.248, MGCP and SIP for PSTN/ISDN. It receives/transmits, processes calls and control messages between users and ZXMSG 5200, and those between ZXMSG 5200 and upper level Local Exchange (LE), MGC or IMS.

4.3.2 Service Subsystem

The service subsystem is in the core layer of the total system software. It is responsible for the implementation of relevant services. The service subsystem consists of the broadband protocol subsystem and the narrowband protocol subsystem:

The broadband protocol subsystem implements broadband services such as basic L2 services, broadband service security, user port identification, multicast & IPTV, xDSL access, xPON access, QoS etc.

The Narrowband protocol subsystem is responsible for the narrowband services such as PSTN & ISDN services and VoIP services. This subsystem implements call control protocols, voice coding schemes, voice quality techniques, fax and modem support etc.

4.3.3 Bearer Subsystem

The bear subsystem consists of many hardware-oriented software modules. It is used to support upper layer services by controlling the key chipset or FPGA.

Bearer subsystem functions are as follows:

• Detection of subscriber circuits

• Subscriber circuit testing

• Announcement play

• DTMF digit receiving

• ISDN subscribers message collection and forwarding

• VOIP coding & decoding

• switching network connection

• xDSL subscriber configuration management



4.3.4 Operation Support Subsystem

Operation Support Subsystem (OSS) is based on Board Support Package (BSP), driver and real time OS Vxworks. The subsystem provides a uniform platform to upper-layer applications for completion of various functions.

OSS functions are as follows:

• Task and process management

• Intra-card and inter-card communication

• Memory management

• Timer management

• File system management functions

• Version loading

• Version management

• System software management

Figure 14 shows the internal functional sub-modules.

Figure 14 Sub-Modules of Operation Support System

Real-time OS

Process dispatch

Inter-process management

Expiration management

Inter-board management

Inter-module communication

R system monitoring

Active/standby control

Network detection

Startup control Alarm system

Version management

File management

Diagnostic test

Environment monitoring

Memory management

OSS features are as follows:



• Switching chip initialization and normal running

• Access to the MIB set, address table, VLAN table and port setting register

• Configuration of packet transmitting/receiving buffer

• Message forwarding (sent by the switching chip) to CPU and from CPU to TCP/IP protocol subsystem or switching protocol subsystem

• Service layer with data forwarding paths

4.3.5 Operation and Management Subsystem

The operation and management subsystem is on the highest layer of the total system software. It supports the SNMP management and CLI management and provides inner interface for the operation and maintenance platform. The network element can be managed by a serial port terminal, a telnet/ssh connection or ZTE EMS.

The operation and management subsystem includes the following functions:

• Hardware management

• Protocol, broadband and narrowband services configuration and maintenance management

• Alarm, system log and fault management

• Performance management

• Security management



5 Technical Specifications

5.1 Physical Indices

5.1.1 Mechanical Dimension

Table 21 shows the dimensions of different cabinets.

Table 21 Dimensions of Different Cabinets

Line access type



19D06H20 2000*600*600 1500E (MDF & Power Integrated Rack)

2000*800*600 Indoor

ONU100 421*218*471 OUT40E 1600*1300*650 OUT20E 1850*1950*650 OUT50F 1100*700*430

Rear access

Outdoor

OUT50C/OUT50D 1100*700*400 19D06H20 2000*600*600

Indoor IN1500E(MDF & Power Integrated Rack) 2000*800*600

OUT40E 1600*1300*650 OUT60 1600*1594*780

Front access

Outdoor

OUT20E 1850*1950*650

5.1.2 Weight

Table 22 shows the weight of different cabinets.

Table 22 weight of Different Cabinets

Line access type

Cabinet type Cabinet Weight (with Battery)(kg)

19D06H20 200 Rear access

Indoor

1500E -



Line access type

Cabinet type Cabinet Weight (with Battery)(kg)

(MDF & Power Integrated Rack) ONU100 18 OUT40E 285 OUT20E 875 OUT50F 180

Outdoor

OUT50C/OUT50D 140 19D06H20 200

Indoor IN1500E(MDF & Power Integrated Rack) -

OUT40E 285

OUT60 420 (without heat exchanger and battery)

Front access

Outdoor

OUT20E 875

5.2 Capacity Table 23 shows the capacity of different cabinets.

Table 23 Capacity of Different Cabinets


Cabinet type Cabinet POTS

only ADSL only

POTS & ADSL combo

19D06H20 1856 1856 POTS: 928 ADSL: 928


704 704 POTS: 352 ADSL: 352

Indoor

ONU100 128 128 POTS: 64 ADSL: 64

OUT40E 1088 1088 POTS: 544 ADSL: 544

OUT20E 1856 1856 POTS: 928 ADSL: 928

OUT50F 320 320 POTS: 160 ADSL: 160

Rear access

Outdoor

OUT50C/OUT50D 192 192 POTS: 96 ADSL: 96

Front Indoor 19D06H20 1088 1088 POTS: 544




Cabinet type Cabinet POTS

only ADSL only

POTS & ADSL combo ADSL: 544

IN1500E(MDF & Power Integrated Rack)

704 704 POTS: 352 ADSL: 352

OUT40E 704 704 POTS: 352 ADSL: 352

OUT60 1088 1088 POTS: 544 ADSL: 544

access

Outdoor

OUT20E 1472 1472 POTS: 736 ADSL: 736

Note:

For the front access cabinet, the above capacity didn’t consider the slots occupied by test card TSLC and environment & power monitoring card EPC.

5.3 Performance

5.3.1 Narrowband Service Performance

Table 23 shows the narrowband service performance.

Table 24 Narrowband Service Performance

Category Feature

Narrowband service

support 50K BHCA The packet loss rate of user interface is 0.001% under the test condition of full load in 24 hours. Connection establishment time of fax call < 20s Call loss rate is not greater than 4/10000.

Coding/Encoding Rate

For G.729a, the coding/encoding rate should be less than 18kbps. For G.723.1 (5.3), the coding/decoding rate should be less than 12kbps; For G.723.1 (6.3), the coding/decoding rate should be less than 15kbps.

Objective Assessment on Voice

Good network conditions: The average PSQM value is less than 1.5. Poor network conditions (packet loss rate = 1%, network jitter = 20ms, time delay = 100ms): The average PSQM value is less than 1.8. Harsh environments (packet loss rate = 5%, network jitter = 60ms, time delay = 400ms): The average PSQM value is less than 2.0.



Category Feature

Subjective Assessment on Voice

Good network conditions: MOS > 4.0 Poor network conditions (packet loss rate = 1%, network jitter = 20ms, time delay = 100ms): MOS > 3.5 Harsh environments (packet loss rate = 5%, network jitter = 60ms, time delay = 400ms): MOS > 3.0

Time Delay Indexes (Loopback Time Delay)

IP call time delay includes coding/decoding time delay, input buffer time delay of receiving end, and internal queue time delay. G.729 time delay is smaller than 150ms. G.723.1 time delay is smaller than 200ms.

5.3.2 Broadband Service Performance

Table 25 shows the broadband service performance.

Table 25 broadband Service Performance

Category Feature Specification Switch capacity. 48G(GIS)/168G(GISX)

Switching system Number of MAC addresses in

the system core switching 8K(GIS)/32K(GISX)

VALN

VLAN quantity 4K

Multicast VLAN support 4 Multicast VLAN Multicast functions Multicast channel 1K

Network-side queues 8 QoS

User-side queues 8

5.4 Power

5.4.1 Input Power Requirement

Table 26 shows input power requirement of different cabinets.



Table 26 Input Power Requirement of Different Cabinets

Line access type Cabinet type Cabinet Input Power

19D06H20 220 ± 20% VAC； –57VDC to –40VDC


220 ± 20% VAC； –57VDC to –40VDC

Indoor

ONU100 220 ± 20% VAC； –57VDC to –40VDC

OUT40E 220 ± 20% VAC OUT20E 220 ± 20% VAC

OUT50F 220 ± 30% VAC –57VDC to –40VDC

Rear access

Outdoor

OUT50C/OUT50D 220 ± 30% VAC； –57VDC to –40VDC

19D06H20 220 ± 20% VAC； –57VDC to –40VDC


220 ± 20% VAC； –57VDC to –40VDC

OUT40E 220 ± 20% VAC OUT60 220 ± 20% VAC

Front access

Outdoor

OUT20E 220 ± 20% VAC

5.4.2 Power Consumption

Table 27 shows the board consumption of ZXMSG 5200.

Table 27 Board Consumption of ZXMSG 5200.

No. Card name Power Consumption (w) Specification

1 ALC 8/45

Static power consumption/maximum power consumption (all user is hooked off)

2 RALC 8/45 3 FLC 1.5/35 4 DLCC 6.5/20




5 GADL/T 18/24

Each established DSL user will add 0.4W at worst situation, in this case the DSL TX power is 20db (the maximum TX power according the ADSL standard).

6 GADL/2+ 18/24 7 GAGL 20/48

8 GILC/2+ 22 (static power consumption)

Each established DSL user will add 0.4W Each hooking on POTS user will add 1.4W

9 GETI 8 10 GVDL 20/34 11 GSDL 24 12 ETC 1 13 GETC 3 14 EPOI 12 15 EPNI 12 16 HDB 7 17 AUDB 8 18 DIB 4 19 HLC 8 20 TRKB 8/10 21 ODTI 7 22 IMAE 14 23 GATI 16 24 IST1T 11.8 25 IST1A 20 26 ICS 22 27 EICS 24 28 GIS 30 29 GISX 45 30 GISE 10 31 MPRB 22 32 CNIC 5 33 GEI sub-card 5 34 EUX sub-card 2 35 TSLCC/2 8




36 TSLCD 8 37 EPC 10 38 POWERH 20 39 POWERK 20

5.5 Working Environment Table 28 shows the temperature and humidity requirement of different cabinets.

Table 28 Temperature & Humidity Requirement of Different Cabinets

Line access type

Cabinet type Cabinet Operation

Temperature Operation Humidity

19D06H20 -10°C ~45°C 5%~90% 1500E (MDF & Power Integrated Rack)

-10°C ~45°C 5%~90%

ONU100 -10°C ~45°C 5%~90% OUT40E -45°C ~50°C 5%~100% OUT20E -45°C ~50°C 5%~100% OUT50F -45°C ~50°C 5%~100%

Outdoor

OUT50C/OUT50D -45°C ~50°C 5%~100% 19D06H20 -10°C ~45°C 5%~90%


-10°C ~45°C 5%~90%

OUT40E -45°C ~50°C 5%~100% OUT60 -45°C ~50°C 5%~100%

Front access

Outdoor

OUT20E -45°C ~50°C 5%~100%

5.6 Reliability • System cold start time ≤ 5 minutes

• Down time a year ≤ 5.3 minutes

• System availability ≥ 99.999%

• Fault-free working time: MTBF > 88000h



• Fault recovery time < 30 minutes

5.7 References ZXMSG 5200 comply the following standards:

Table 29 Standards Compliance

Standard No. Standard Name

ETSI 300 019-2-1

Environmental conditions and environmental tests for telecommunications equipment; Part 2-1: Specification of environmental tests; Storage

ETSI 300 019-2-2

Environmental conditions and environmental tests for telecommunications equipment; Part 2-2: Specification of environmental tests; Transportation

ETSI 300 019-2-3

Environmental conditions and environmental tests for telecommunications equipment; Part 2-3: Specification of environmental tests; Stationary use at weather protected locations

ITU-T K.11 Principles of protection against over voltages and over currents

ITU-T K.20 Resistibility of telecommunication switching equipment to over voltages and over currents

IEC 60950 Safety of information technology equipment

IEC IP55 International Electrotechnical Commission (IEC IP55) protection standard

UL 60950 Safety of information technology equipment EN 61000 Electromagnetic compatibility (EMC)

EN55022 Information technology equipment -Radio disturbance characteristics - Limits and methods of measurement Class A

DSL Forum WT-114 VDSL2 Performance Test Plan

DSL Forum WT-115 VDSL2 Functionality Test Plan

DSL Forum TR-67 ADSL Interoperability Test Plan

DSL Forum TR-101

Migration to Ethernet-Based DSL Aggregation

DSL Forum TR-126 Triple Play Quality of Experience Requirement

IEEE 802.1D IEEE standard for local and metropolitan area networks--Common specifications--Media access control (MAC) Bridges

IEEE 802.1p Traffic class expediting and dynamic multicast filtering IEEE 802.1Q Virtual Bridged Local Area Networks




IEEE 802.1w

Local and metropolitan area networks---Common specifications Part 3: Media Access Control (MAC) Bridges---Amendment 2---Rapid Reconfiguration

IEEE 802.1x Port Based Network Access Control IEEE 802.1ag Connectivity Fault Management

IEEE 802.2 IEEE standard for local and metropolitan area networks Specific requirements Part 2: Logical Link Control

IEEE 802.3 Edition Carrier Sense Multiple Access with Collision Detection (CSMA/CD) access method and physical layer specifications

IEEE 802.3u 100BaseTX and 100BaseFX specification IEEE 802.3x Full duplex and flow control on 10BaseT and 100BaseT ports IEEE 802.3z 1000BaseX specification IEEE 802.3ad Ethernet Link Aggregation IEEE 802.3ae 10 Gigabit Ethernet IEEE 802.3ah Ethernet in the First Mile (EFM)

ITU-T G.703 Physical / electrical characteristics of hierarchical digital interfaces

ITU-T G.704 Synchronous frame structures used at 1544, 6312, 2048, 8448 and 44,736 Kbps hierarchical levels

ITU-T G.706

Frame alignment and cyclic redundancy check (CRC) Procedures relating to basic frame structures defined in recommendation G.704

ITU-T G.711 Pulse Code Modulation (PCM) of voice frequencies ITU-T G.723.1

Speech coders – Dual rate speech coder for multimedia communications transmitting at 5.3 and 6.3 Kbps.

ITU-T G.726 40, 32, 24, 16 kbit/s Adaptive Differential Pulse Code Modulation (ADPCM)

ITU-T G.729 Coding of speech at 8 Kbps using Conjugate Structure Algebraic Code Excited Linear Predictions (CSACELP).

ITU-T G.810 Definitions and terminology for synchronization networks

ITU-T G.823 Control of jitter and wander within digital networks that are based on the 2048 Kbps hierarchy

ITU G.993.2 Very high speed digital subscriber line 2

ITU-T G.983.4

A broadband optical access system with increased service capability using dynamic bandwidth assignment

ITU-T G.984.1 GPON General Characteristics

ITU-T G.984.2

GPON Physical Media Dependant (PMD) Layer Specification

ITU-T G.984.3

GPON Transmission Convergence Layer Specification



Standard No. Standard Name ITU-T G.984.4

GPON ONT Management and Control Interface Specification

ITU-T G.960 Access digital section for ISDN basic rate access

ITU-T G.961 Digital transmission system on metallic local lines for ISDN basic rate access

ITU-T G.962 Access digital section for ISDN primary rate at 2048 Kbps

ITU-T G.964 V-interfaces at the digital local exchange (LE) V5.1-interface (based on 2048kbit/s) for the support of access network (AN)

ITU-T G.965 V-interfaces at the digital local exchange (LE) V5.2-interface (based on 2048kbit/s) for the support of access network (AN)

ITU-T G.991.2

Single-pair high-speed digital subscriber line (SHDSL) transceivers

ITU-T G.992.1 Asymmetric Digital Subscriber Line (ADSL) transceivers

ITU-T G.992.3

Asymmetrical digital subscriber line (ADSL) transceivers – 2 (ADSL2)

ITU-T G.992.5

Asymmetrical digital subscriber line (ADSL) transceivers – extended bandwidth ADSL2 (ADSL2plus)

ITU-T G.994.1 Handshake Procedures for DSL transceivers

ITU-T G.996.1 Test Procedures for DSL transceivers

ITU-T G.997.1

Physical Layer Management for DSL transceivers

ITU-T H.248 Gateway control protocol ITU-T I.430 Basic user network interface - Layer 1 specification ITU-T Q.23 Technical features of push-button telephone sets ITU-T E.180/Q.35 Technical characteristics of tones for the telephone service

ITU-T Q.920 ISDN user network interface data link layer – General aspects ITU-T Q.921 ISDN user network interface - Data link layer specification

ITU-T Q.931 ISDN user network interface Layer 3 specification for basic call control

ITU-T T.30 Procedures for document facsimile transmission in the general switched telephone network

ITU-T T.38 Procedures for real-time Group 3 facsimile communication over IP networks

ITU-T T4 Standardization of Group 3 facsimile terminals for document transmission

ITU-T Y.1413 TDM-MPLS Network Inter working-User Plane Inter working

ITU-T Y.1731 OAM Functions and Mechanisms for Ethernet Based Networks and IEEE 802.1ag.




ITU-T V.24 List of definitions for interchange circuits between data terminal equipment (DTE) and data circuit-terminating equipment (DCE)

ITU-T V.36 Modem using the 60-108 kHz frequency band for synchronous data transmission

RFC 0768 User Datagram Protocol (UDP) RFC 0791 Internet Protocol (IP) RFC 0792 Internet Control Message Protocol (ICMP) RFC 0793 Transmission Control Protocol (TCP) RFC 0796 Address mappings RFC 0854 Telnet protocol specification RFC 0855 Telnet option specifications RFC 0858 Telnet suppress go ahead option

RFC 0894 Standard for the transmission of IP datagram over Ethernet networks

RFC 0896 Congestion control in IP/TCP internet works RFC 1112 Host Extension for IP multicasting

RFC 1155 Structure and identification of management information for TCP/IP-based internets

RFC 1157 Simple Network Management Protocol (SNMP)

RFC 1213 Management Information Base (MIB) for network management of TCP/IP-based internets: MIB-II

RFC 1242 Benchmarking terminology for network interconnection devices RFC 1254 Gateway congestion control survey RFC 1256 ICMP router discovery messages RFC 148 Comments on RFC 123 RFC 1493 Definitions of managed objects for bridges RFC 1889 RTP: A transport protocol for real-time applications

RFC 1890 RTP Profile for audio and video conferences with minimal control

RFC 1901 Introduction to community-based SNMPv2

RFC 1902 Structure of management information for Version 2 of the Simple Network Management Protocol (SNMPv2)

RFC 1903 Textual conventions for Version 2 of the Simple Network Management Protocol (SNMPv2)

RFC 1904 Conformance statements for Version 2 of the Simple Network Management Protocol (SNMPv2)

RFC 1905 Protocol operations for Version 2 of the Simple Network Management Protocol (SNMPv2)

RFC 1906 Transport mappings for Version 2 of the Simple Network Management Protocol (SNMPv2)




RFC 1907 Management Information Base (MIB) for Version 2 of the Simple Network Management Protocol (SNMPv2)

RFC 2236 Internet Group Management protocol, minimum version 2 RFC 2285 Benchmarking terminology for LAN switching devices RFC 2515 Definitions of managed objects for ATM management RFC 2662 Definitions of managed objects for ADSL lines RFC 2665 Definitions of managed objects for Ethernet like interface types RFC 2863 Interfaces group MIB

RFC 2907 Management Information Base (MIB) for Version 2 of the Simple Network Management Protocol (SNMPv2)

RFC 2933 Internet Group Management Protocol (IGCMP) MIB RFC 2960 Stream Control Transmission Protocol (SCTP) RFC 3015 Megaco Protocol Version 1.0 RFC 3057 ISDN Q.921 user adaptation layer

RFC 3376 Internet Group Management protocol, minimum version 2 and version 3

RFC 3435/RFC 3660

Media Gateway Control Protocol (MGCP) Version 1.0 basic Media Gateway Control Protocol (MGCP) packages

RFC 3916 Requirements for PWE3 RFC 3985 PWE3 Architecture

RFC 4197 Requirements for Edge-to-Edge Emulation of Time Division Multiplexing (TDM) Circuits over PSN

RFC 4447 Pseudo wire Setup and Maintenance using the Label Distribution Protocol (LDP)

RFC 4553 Structure Agnostic TDM over Packet (SAToP)

RFC 4446 IANA Allocations for Pseudo wire Edge to Edge Emulation (PWE3)

RFC 4385 Pseudo wire Emulation Edge-to-Edge (PWE3) Control Word for Use over an MPLS PSN

RFC 5086 （Structure-Aware Time Division Multiplexed (TDM) Circuit Emulation Service over Packet Switched Network (CESoPSN)）



6 Operation and Maintenance ZXMSG 5200 provides a rich set of commands for convenient operation. Three access modes exist to login into ZXMSG 5200. The modes are:

• Graphical User Interface (GUI)

• Command Line Interface (CLI)

EMS provides a Graphical User Interface (GUI) access. Web provides a web access to MSG5200. CLI provides a command line access to MSG5200.

6.1 GUI ZTE develops the NetNumen N31 Integrated Element Management System that adopts the advanced EMS architecture, provides a complete set of Java-based trans-platform development tools, modules and APIs. As a highly customized, carrier-class, trans-platform integrated EMS with the bottom-to-up design, the NetNumen N31 can be easily integrated with multiple third-party systems, and provides a comprehensive solution for network management purpose. ZTE owns the complete intellectual property of this NetNumen N31 system, and has adopted multiple patent technologies to improve its functions. As required, the system can fast, flexibly, conveniently and economically manage different NEs, bringing about good social and economic benefits for the operators. Its flexible expandability ensures smooth system upgrade during system expansion or during addition of new network equipment so that it has the minimum impact on the existing system.

The NetNumen N31 EMS is an integrated EMS that currently manages different data equipment of ZTE in the backbone layer, the convergence layer, and the access layer.

6.1.1 System Structure

6.1.1.1 Distributed Processing Structure

The NetNumen N31 EMS adopts the 3-level client/server structure, which is a typical distributed application system, composed of three parts: The database server, the EMS server and the EMS client, as shown in Figure 15. The EMS client exchanges information with the managed EMS equipment and accesses the database via the EMS server.



Figure 15 System Structure of the NetNumen N31

The Java application client provides all EMS functions and has good user friendly feature.

The system server adopts Java and can run on multiple OS platforms, such as Windows and UNIX ones.

The system provides support for multiple database systems (such as Oracle and SQL Server) via the standard database access interface JDBC. The database system can run on the same server platform together with the EMS server, or it can run on an independent server platform.

The information flow of the system starts from the time when user information is received from the client. After operation rights authentication and input check, it is transferred to the server for processing. The server exchanges information with the NE and then is synchronized to the database data or directly accesses the database before returning the results to the client. Therefore, the client and the server cover all the system management functions.

6.1.2 Characteristics of EMS

• Standard compliance

The system strictly complies with ITU-T TMN series recommendations and RFC series EMS protocols.

• Comprehensive network management capabilities

The system manages different data communication products of ZTE.



The system management consists of two levels: NE management and network management, and provides comprehensive network management functions.

• Distributed processing capabilities

The system provides strong fault tolerance capabilities. When a server in the system is down, the other servers can take over its jobs so that the services will not be interrupted.

• Support for multiple platforms and databases

Based on the JAVA language, the system has the trans-platform feature and supports the UNIX and the Windows OSs.

The system supports MSSQL server and Oracle.

• Openness

The system supports the standard SNMP, provides such interfaces as TL1, Syslog, CORBA and SNMP, and supports integration with the third-party system to facilitate the office party to deploy OSS applications.

• Easy expansion and upgrade

Modular design is adopted for the system so that the system provides good expansion and upgrade functions.

• Fast automatic discovery

The system can automatically discover devices by batch based on such information as the IP address range set by the user and the device type, and add them to the management system.

• Powerful network element statistics function

The system supports statistics function that all NEs managed.

• System-self management

The system provides complete system management capabilities and can monitor the system operation.

• Security

The system provides comprehensive access right control functions and supports user access to the system by level and by area. That is, the system supports operations on limited NEs within the limited granularity.

The system provides comprehensive security log records.

• Support for local management

• The system supports both Chinese and English. The local management can be conducted by selecting the corresponding language during the system installation.



6.1.3 EMS Functions

NetNumen N31 has the following functions: topology, configuration, fault, performance, security, strategy, log, report, etc.

NetNumen N31 comprises the NE managers of multiple NEs and supports centralized management of multiple NEs in the same platform. It is used to implement operation and maintenance of one or more NEs. The NE managers are in the form of functional components and built in the EMS. They can be loaded as per the type of the equipment in the managed network to implement the point-to-point management of the corresponding NEs.

They interact with the managed equipment via the Telnet interface (man-machine commands) or with the SNMP to implement the following management functions:

6.1.3.1 Network topology management

• Support for management of network topologies: Multiple management views based on different equipment types, different subnets and different management domains

• Support for automatic discovery of the NE nodes in the network: The nodes automatically discovered are stored in the network topology database

• Support for manually adding nodes to the network

• Network node filtering: Customization of the filter

• Monitoring of the node running state based on the network topology

• Support for multi-level topologies

• Support for adding virtual nodes to the topology

• Support for grid, ring and star topological arrangement of nodes

• Support for network topological connections among the nodes and connection descriptions

• Support for node sequencing by English or Chinese in the topology

• Support for English or Chinese naming and renaming of nodes in the topology

• Support for fuzzy search by node name or IP address in the topology

• Support for editing and deleting nodes in the topology

• Support for customization of the background map in the topology.



6.1.3.2 Configuration management

The related attributes of the equipment and the services can be configured so as to put the network into operation and launch such services. The system supports the following types of configuration management tools:

• GUI-based configuration management

• Telnet-based configuration management with man-machine commands

6.1.3.3 Monitoring of the rack state

• Monitoring of the operation state of NEs (including racks, cards and ports) for vivid and detailed location of the fault sources

• Support for navigation of other management functions (for example, different configuration functions) via the rack diagram

6.1.3.4 Fault management

Through fault management the equipment alarms reported by all NEs of the entire network and the network event reports can be received and presented to the maintenance staff in real time in the visible and audible form, so that the maintenance can confirm and process such alarms and network event reports and store the collected alarm reports in the database for alarm statistics and query.

• NE alarm display

• NE alarm filter setting

• Redefinition of alarm levels

• Redefinition of alarm solution suggestions

• Setting of NE audio alarms

• Display and handling of alarm data in the entire network: Monitoring of history events and the current alarm list in a uniform way

• Storage of history alarm data

• Analysis of event correlation and fault location: Alarms of related types can be combined to pinpoint the fault

• Confirmation and deletion of alarms

• Transfer of alarms: Alarms can be transferred to network nodes in different levels

• Filter of alarms: The user can customize filters



• User definition of alarm levels

• Query and statistics of faults: Support for report type output

• Fault diagnosis and test

6.1.3.5 Performance management

The performance management module monitors and analyzes the performance of the network and equipment. It collects performance data from the NEs and generates performance reports after processing them, so as to provide information for the maintenance and management departments and guide the network engineering, planning and adjustment for improving the operation quality of the whole network.

• Collection of NE performance data

• Monitoring of NE performance alarms

• Graphical display of NE performance data

• Storage of NE performance data

• Storage of history performance data

• Support for display of network performance data in graphical and table forms

• Monitoring of network performance state and prompt of performance alarms

• Automatic deletion of history performance data: The user can customize the storage period of performance data

6.1.3.6 Security management

• Support for right management of the system functions: Operation rights of multiple system functions are assigned to specific user groups. The users in a user group can conduct the management operations corresponding to the group rights. The security management rights can be further divided to the menu level so that the right management is more flexible;

• Support for right management of the managed network domain: The managed equipment is assigned to the specific user, who can manage the equipment with the assigned rights. In addition, the security management domain is based on the network topological areas, which facilitates the by right and domain management.

• System security logs: This includes multiple log types such as system security log and user operation log. The system supports auditing of system operation and user operations.



6.1.3.7 Policy management

• Support for two policy types: Timing execution policy and event-triggering execution policy;

• Policy customization. After being customized, the policy is registered and triggered in the policy engine, and the system supports automatic dispatching and protection based on the network operation condition;

• System management policies. The user can customize the policy execution time and date so that the system will trigger the policies at the specified time. Such policies are alarm clearance policy, operation log clearance policy, performance data clearance policy, and database backup policy.

6.1.3.8 Log management

• Support alarm log, operation log, security log

6.1.3.9 Report management

• User can customize reports, and creates reports periodically

6.1.4 EMS Networking

6.1.4.1 EMS Data Channels

To ensure that the EMS can stably manage the equipment in it, reliable EMS channels must be provided for the EMS. The EMS channels generally fall into two kinds: Inband EMS channels and outband EMS channels.

Since the TCP/IP is adopted as the transmission EMS protocol between the EMS and the managed equipment, the only standard for judging the effectiveness of the EMS channels is to check if TCP/IP links are established between the EMS (the EMS server) and the managed equipment, whether the inband or outband channels. A simple method is to use the ICMP Ping tool to judge so.

• In-band EMS

The NetNumen N31 manages data products, these products themselves can provide inband data channels for EMS information, therefore, the SNMP-based management information does not need the establishment of a DCN network, and instead, EMS data are transmitted together with service data in the same data network.

Since there is no need to establish a special DNC network for the EMS, the inband EMS brings low cost and is easy to construct, but its stability varies with the reliability of the equipment itself because it uses the channels provided by the equipment. In addition, if the network structure is complex with too many layers in the case of inband EMS, many



factors will affect the transmission of EMS information and may cause the instability of the EMS channels.

Because the EMS adopts the centralized management mode, the EMS data of all the managed equipment are converged at the EMS, where the data volume is tremendous. Therefore, we can consider configuring a standalone router in the EMS center to transmit all the EMS data and avoid affecting the backbone equipment.

• Outband EMS

In many application cases, standalone data channels (outband) are needed for the equipment configurations to ensure the reliability of the equipment configurations.

The outband management mode improves the reliability of the EMS. Because the EMS data are transmitted through the data network established by the managed equipment in the case of using the inband channels, the fault information will not be able to be reported timely and the EMS thus cannot timely monitor the network and send personnel to repair the faults when faults occur to some node equipment to cause the link break of the data channels. In contrast, in the outband management mode, users can log in to each node to observe the running status of the node equipment and configure it to shoot the troubles once the network performance is found abnormal. Since the outband channels are separated from the data network, the inband management channels are mutually complementary to the outband management channels to ensure the reliability of the EMS.

The outband channels are generally implemented via the existing data network, for example, the DCN network in the 97 Project. Or the EMS can also connect the serial port of the managed NE via MODEM through the dialup network to implement remote configuration based on man-machine commands.

6.1.4.2 Centralized Management

The NetNumen N31 is an EMS constructed over the data communication network. It can maintain and manage all kinds of network equipment in a centralized manner in a broad area and complex application environment. The centralized management mode is generally used for the networking, that is, the EMS manages plenty of equipment distributed in the managed network in a centralized manner.

In the centralized management mode, the EMS is composed of the client and the server and the whole managed network has only one server that exchanges management information with all the managed equipment. In contrast, there may be multiple clients and they connect with the server to implement man-machine interactions with users but cannot directly connect the equipment. The client configurations may take the following two modes: Local client and remote client.

• Local client: Both the client and the server are located in the same LAN and they implement the centralized management of the entire network together.

• Remote client: The client is connected with the server via the WAN and can be located in the remote equipment room to manage the local equipment by dividing management domains. Also, the remote client does not directly connect the managed equipment.



The remote client networking can implement hierarchical management in the centralized management mode, as shown in Figure 16. When the system manages a network across multiple domains, the network is split into several subnets (generally these subnets are divided according to the areas or the equipment type) and all the equipment in the network are connected to the upper-level EMS to exchange management information with the EMS. In the upper-level EMS center, administrators can monitor the running status of the entire network (including several subnets) through the local terminals.

The lower-level EMS center for managing the subnets is extended from the remote client in the upper-level EMS center to the local client to monitor the local subnet. In the lower-level EMS center, no EMS server is configured but there are only management terminals to exchange management information with all the equipment in the local subnet via the EMS sever in the upper-level EMS center. In the EMS server, management rights can be set according to the management area and content, so that the management terminals in the lower-level EMS can only access the subnets within its management right scope after login to the EMS server. The lower-level EMS client can both monitor the network through graphical interactions and output a variety of reports, so this is equivalent to the Manager-Agent mode in terms of management content.

When the remote client mode is used to implement hierarchical management, the management rights of different subnets are assigned by the upper-level EMS and the data are uniformly maintained by the upper-level EMS, thus ensuring that the upper-level EMS can monitor the entire network and correct & reliable data are obtained.

Figure 16 Centralized Management Mode

Two issues exist when the remote client mode is used to implement hierarchical management:

• The server needs higher performance. Since there is only one EMS server in the entire network to exchange information with all equipment in the network, it has



heavy processing load and so its configurations must be quite high. When the server is faulty, the management of the entire network will be affected.

• It is necessary to provide data transmission channels for the remote clients with high bandwidth requirement (at least 2M).

6.1.5 EMS Interfaces

NBI and SBI in NetNumen N31 are shown as below.

Figure 17 NBI and SBI in NetNumen N31

1 SBI

NetNumen N31 could manage many type of NE. Base on different requirements, there are many kinds of SBI. SNMP, TR069 and MML are the most usually used SBI. For MSG5200, SBI is based on SNMP.

2 NBI

NBI in NetNumen N31 supports TL1, Syslog, SNMP Trap, etc. Any of these NBI could be interact with OSS easily.

When NBI is defined by OSS, usually NetNumen N31 will customize NBI accordingly. NetNumen N31 could customize special NBI for special OSS.



At the same time, NetNumen N31 supports some basic NBI functions. These NBI functions could be used in many OSS without any modifications.

6.2 CLI CLI is another mechanism for interacting with MSG5200 by typing commands to perform specific tasks. Operators can type in a command on a specified line, receive a response back from MSG5200, and then enter another command, and so forth. The CLI of MSG5200 has two login modes and four user modes.

6.2.1 Login Modes

CLI has two login modes: HyperTerminal and Telnet.

HyperTerminal provides a convenient way of logging into ZXMSG 5200. ZXMSG 5200 comes with a cross-over serial port cable for accessing HyperTerminal.

Telnet is another simple way to access ZXMSG 5200. Out-band management uses maintenance port on ICS card and in-band management uses service uplink traffic channel.

6.2.2 User Modes

The NetNumen N31 EMS is an integrated EMS that currently manages different data equipment of ZTE in the backbone layer, the convergence layer, and the access layer.

ZXMSG 5200 supports the following access modes:

1 Common User Mode

Common user mode provides the least set of privileges and allows execution of most common commands. Usually, a command able to be executed in Common User Mode is necessarily also available (for execution) in higher modes. This command manual specifies the least-privileged mode for command execution.

2 Management Mode

Management mode provides management operations. Management mode provides higher level of privileges than Common User Mode. Management mode is divided into following two sub-modes:

3 Super Mode

Super Mode is the mode with all privileges. All commands can be executed under Super Mode.

4 Debug Mode

Debug Mode is used for debugging and troubleshooting purpose.



7 Networking

7.1 Integrated Access Application ZXASG5200 is a new generation of multi-service access network and access gateway based on ZTE´s Fixed-line 3G@NGN solution, which is located at the edge of Next-Generation Network (NGN). ZXMSG5200 uses a multi-service trunk framework and built-in multi-service transmission platform (MSTP) module with resilient packet ring (RPR) functions to provide efficient access, transmission and convergence of different communications types into a single packet-based form. It is an NGN-oriented access system that is also compatible with the PSTN network thus providing carriers with greater flexibility in constructing fixed-line networks while greatly lowering the risks in implementing next generation networks. It is therefore becoming many carriers´ first choice for the construction of fixed-line networks,

Figure 18 shows the ZXMSG 5200 Integrated Access application in NGN.

Figure 18 ZXMSG 5200 integrated access application in NGN

ZXMSG 5200

ZXMSG 5200ADSL modem LAN

E1/V.24/V3.5

DDN

IP

PSTN

Video

ISDN PRI

PRI PBX

FEFEFEFE

NT1NT1

ISDN BRI

ISDN PRA ADSL/ADSL2/ADSL2+ PC

ZXMSG 5200ZXMSG 5200

VDSL modem

ISDN BRALeased Line

V5/E1

E1

FE/GE

NMS

POTS

POTSSplitter

xPON

xPON

xPON

VDSL2

In this application, the ZXMSG 5200 provides:

• POTS interface as well as ISDN basic rate access (BRA) and ISDN primary rate access (PRA).

• ADSL/ADSL2/ADSL2+ broadband network access as well as VDSL2 broadband network access.



• GPON/EPON broadband network access.

• LAN access and user leased line access.

7.2 Triple Play Application Triple play that converges data, voice and video over the same IP infrastructure is garnering much attention from telecommunications carriers. It can help subscribers save money since they only need to pay access fees for a package of services.

ZXMSG 5200 can provide a Triple Play solution comprising a range of voice, data and IPTV services over an IP connection.

Figure 19 shows the triple play application in ZXMSG 5200.

Figure 19 Triple play application in ZXMSG 5200

Internet

SS/IMS

PSTN

Video

TG

Home Gateway

IP/MPLSIP/MPLS

ZXMSG 5200

Telephone PC IPTV

STB

GE/FE

NMS

Home Network

In this application, triple play users are connected to the ZXMSG 5200 through the home gateway. The applications supported as part of ZTE’s “Triple Play” offerings include:

• Data service: The ZXMSG 5200 offers xDSL connectivity with support for ADSL/ADSL2/ADSL2+/VDSL2 technologies and FTTx connectivity with support for GPON/EPON. There is an option for bringing the xDSL and FTTx systems together on the ZXMSG 5200.

• Voice service: The ZXMSG 5200 provides IP Telephony solutions for NGN or IMS networks. The VoIP packets reach the ZXMSG 5200 through the home gateway. The ZXMSG5200 transmits the packets to the NGN or IMS network.

• Video service: The ZXMSG 5200 provides multicast users’ authorities and manages the programs based IGMP proxy and controllable multicast, and transmits the IGMP protocol packets to the equipment at the aggregation layer.



7.3 PWE3 Application Pseudo wire is a technology developed (and standardized by the IETF, ITU-T and MEF) for carrying E1, T1, ATM, Frame Relay or Ethernet across the Packet Switched Network (PSN), transparent to all protocols and signaling. Pseudo Wire Emulation Edge-to-Edge (PWE3) is used to integrate multi networks into one. The PWE3 technology can emulate the virtual line on the MPLS edge equipment, put the TDM/ATM services into the MPLS tunnel and transmit them over the MPLS network.

ZXMSG 5200 provides PWE3 interface to terminate the low-speed TDM services and adapts the services to the IP/MPLS network.

Figure 20 shows the PWE3 application in ZXMSG 5200.

Figure 20 PWE3 application in ZXMSG 5200

ZXMSG 5200IP/MPLSIP/MPLS

R R

R

OFFICE1 OFFICE2 HEAD OFFICE

ZXMSG 5200

V.24/V.35

V.24/V.35V.24/V.35

PSN Tunnel

Pseudo Wire

In this application, private circuit user are connected to the ZXMSG 5200 through copper wire or E1 interface. The ZXMSG 5200 provides private circuit service to the user through IP/MPLS network, this service including:

• V.24/V.35/E1 service: The ZXMSG 5200 assembling user-defined packets of TDM traffic from the TDM access interface such as E1//STM-1 and convert them into packets for transmission over the IP/MPLS network. The original traffic is reconstructed and the clocking is regenerated at the destination. Transparent connectivity over the IP/MPLS network maintains all features and functionality of the legacy network.



7.4 VoIP Application VoIP (Voice over Internet Protocol) is simply the transmission of voice traffic over IP-based networks. VoIP technologies help to save the bandwidth resource and reduce the costs. ZXMSG 5200 supports H.248, MGCP, SIP and other VoIP protocol. These protocols are used between ZXMSG 5200 and core network to access the POTS subscribers directly to the VoIP network.

Figure 21 shows the ZXMSG 5200 VoIP application in NGN network.

Figure 21 ZXMSG 5200 VoIP application in NGN network

IP/MPLSIP/MPLS

ZXMSG 5200GE/FE

NMS

GE/FE

ZXMSG 5200

Telephone

PC

IPTV

Telephone

PC

IPTV

H.248/MGCP

H.248/MGCP

RTP

Signal Stream

Media Stream

MGC

In this application, the media gateway controls The ZXMSG 5200 through H.248 or MGCP protocols. The ZXMSG 5200 can communicate with each other.

Figure 22 shows the ZXMSG 5200 VoIP application in IMS network.



Figure 22 ZXMSG 5200 VoIP application in IMS network

IMS core IP/MPLSIP/MPLS

ZXMSG 5200GE/FE

NMS

GE/FE

ZXMSG 5200

Telephone

PC

IPTV

Telephone

PC

IPTV

SIP

SIP

RTP

Signal Stream

Media Stream

In this application, the ZXMSG 5200 access to IMS network through SIP protocol, the ZXMSG 5200 can communicate with each other.

7.5 User Leased Line Service Application Digital Data Network (DDN) provides virtually error free and transparent transmission paths in digital manner for applications requiring high bandwidth and being sensitive to delay such as interconnecting LAN and Video Conference, and for constructing private networks running high level protocol.

The ZXMSG 5200 supports user leased line service. ZXMSG 5200 supports various types of speed modes, like 2.4kbit/s, 4.8kbit/s, 9.6kbit/s, 64kbit/s, N*64kb/s, 2048kbit/s. ZXMSG 5200 supports various kinds of DDN interfaces, like V.24/V.35/G.703. ZXMSG 5200 provides E1 interface as uplink interface to connect to DDN network.

Figure 23 shows the ZXMSG 5200 user leased line service application in DDN network.



Figure 23 ZXMSG 5200 user leased line application in DDN network

DDN

ZXMSG 5200

E1

R

2B+D

N×64K×

V.24/V.35/E1×

G.SHDSL

DDN node

DDN node

DDN node

DDN node

In this application, user leased line user are connected to the ZXMSG 5200 through copper wire or E1 interface. The ZXMSG 5200 provides used leased line service to the user through DDN network, this service including:

• ITU-T V.35 N*64kb/s (1<N<31) digital leased line.

• ITU-T G.703 E1 digital leased line.

• TDM G.SHDSL digital leased line.

• ISDN digital leased line.

• ITU-T V.24 digital leased line.

7.6 V5.2 application V5.2 protocol provided a standard set of protocols from the subscriber to the LE（Local Exchange）. The AN (or Access Network) was defined as a reference point. Signalling between this point and the LE was standardized and therefore allowed a multiple vendor solution, provided the specifications were followed.

The ZXMSG 5200 provides a standard V5.2 interface to support PSTN service.

Figure 24 shows the ZXMSG 5200 V5.2 application in PSTN network.



Figure 24 V5.2 application in ZXMSG 5200

PSTNZXMSG 5200

V5/E1

NMS POTS

FAX

ISDN

In this application, the ZXMSG5200 is connected to PSTN network through V5.2 interface. PSTN services are supported by the Local Exchange.

7.7 R2 Packet Application R2 is a signalling protocol used outside of the former Bell System to convey information along a telephone trunk between two telephone switches in order to establish a single telephone call along that trunk.

The ZXMSG 5200 supports R2 packet application. Figure 25 shows the ZXMSG 5200 R2 packet application in NGN network.

Figure 25 ZXMSG 5200 R2 packet application in NGN network

IP/MPLSIP/MPLS

ZXMSG 5200

H.248

NMS

MGCR2/E1

R2 PBX

Office

In this application, the ZXMSG 5200 connects to the R2 PBX through E1 port and interacts with the PBX through R2 signaling. The ZXMSG 5200 divides R2 signaling into packets through H.248, and then sends the packets to the MGC. ZXMSG 5200 provides PBX services under the control of MGC.



Acronyms and Abbreviations Abbreviation Full Name ADSL Asymmetrical Digital Subscriber Line AG Access Gateway ALC Analog Line Card AN Access Network API Application Programming Interface ATM Asynchronous Transfer Mode BER Bit Error Ratio BRI Basic Rate Interface BSP Board Support Package

CCITT International Consultative Committee For Telephone and Telegraph

CCS7 No7 Common Channel Signaling CDMA Code Division Multiple Access CFI Canonical Format Indicator CMIP Common Management Information Protocol CO Central Office CPE Customer Premises Equipment CSI Called Subscriber Identification CSM CCS No7 Signaling Module DCN Data Communication Network DDN Digital Data Network DHCP Dynamic Host Control Protocol DIB Digital Interface Board DLC Digital Line Circuit DMT Discrete Multi-Tone DSLC Digital Subscriber Line Circuit DT Digital Trunk DTE Data Terminal Equipment DTM Digital Trunk Module DTMF Dual Tone Multi-Frequency EPM Environment Power Monitoring EPON Ethernet Passive Optical Network FDM Frequency Division Multiplexing FTTB Fiber to the Building FTTH Fiber to the Home HDSL High-speed Digital Subscriber Line



Abbreviation Full Name HW High Way IGMP Internet Group Management Protocol ISDN Integrated Service Digital Network

ITU-T International Telecom Union-Telecommunication standardization

LE Local Exchange MGC Media Gateway Controller MGCP Media Gateway Control Protocol MODEM Modulation-Demodulation MSAN Multi-Service Access Network NE Network Element NGN Next Generation Network OAM Operation, Administration & Maintenance ODT Octal Digital Trunk OLT Optical Line Terminal ONU Optical Network Unit OS Operation System OSS Operation Support Subsystem OW Order Wire PCM Pulse Code Modulation PRI Primary Rate Interface PSPDN Packet Switched Public Data Network PSTN Public Switch Telephone Network QoS Quality of Service RTP Real-time Transport Protocol SHDSL Single-Pair High Digital Subscriber Line SLC Subscriber Line Circuit SNI Service Network Interface SPC Stored Program Control SS SoftSwitch SYC Synchronization Control TCI Tag Control Information TMS Tornado for Managed Switches ToS Type of Service TPID Tag Protocol Identifier TSLC Test Subscriber Line Card UNI User Network Interface VDSL Very High Speed Digital Subscriber Line



Abbreviation Full Name VOD Video On Demand VoIP Voice over Internet Protocol VPN Virtual Private Network

ZXMSG 5200 Product Description

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