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Chapter 2 - System Architecture

Confidential and Proprietary Information of ZTE CORPORATION

21

F

I G U R E

1

W

O R K I N G

P

R I N C I P L E O F T H E

Z X M S G

5 2 0 0

TDM

switching

Ethernet switching

POTS

xDSL

Voice

compressing

CNIC

( NAT module )

IP

network

ICS

MPR

ICS upper sub-card

In Figure 1, the  outmost frame stands for the system border, and dotted
line frames present board functions. The ZXMSG 5200 provides POTS and
xDSL  access at the subscriber side and provides IP uplink at the network
side.

Narrowband services like POTS enter the TDM of ICS board for switching.
Voices  are  converted  into  IP  packets  through  MPR’s  voice  compressing
functions.  The  packets  are  switched  by  the  Ethernet  switching  chip  and
sent to CNIC for  network address conversion,  and then switched again to
enter the IP network from the uplink interface.

xDSL services enter the Ethernet switching chip of ICS board and then is
sent to the IP network through the uplink interface.

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Summary of Contents for zxmsg 5200

Page 1: ...echnical Manual Version 2 0 ZTE CORPORATION ZTE Plaza Keji Road South Hi Tech Industrial Park Nanshan District Shenzhen P R China 518057 Tel 86 755 26771900 800 9830 9830 Fax 86 755 26772236 URL http support zte com cn E mail doc zte com cn ...

Page 2: ...s are disclaimed including without limitation any implied warranty of merchantability fitness for a particular purpose title or non infringement ZTE CORPORATION and its licensors shall not be liable for damages resulting from the use of or reliance on the information contained herein ZTE CORPORATION or its licensors may have current or pending intellectual property rights or applications covering ...

Page 3: ...y Content Good Fair Average Poor Bad N A Your suggestions for improvement of this documentation Please check the suggestions which you feel can improve this documentation Improve the overview introduction Make it more concise brief Improve the Contents Add more step by step procedures tutorials Improve the organization Add more troubleshooting information Include more figures Make it less technica...

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Page 5: ...t xiii Chapter 1 15 Overview 15 Chapter 2 19 System Architecture 19 System Overview 19 System Background 19 Applicable Standards 20 Main Functions 20 System Working Principles 20 Hardware Structure 22 Software Architecture 23 Chapter 3 25 Technical Specifications 25 Physical Specifications 25 Shelf Dimensions 25 Rack Parameters 26 Environment Conditions 27 System Performance Indices 27 Capacity 27...

Page 6: ...31 Structure Layout Diagram 32 Board Overview 33 Integrated Control Switch Board ICS 33 Packet Processing and Resource Board MPR 35 Analog Line Card ALC 37 ADSL Subscriber Card ADLG 38 Test Subscriber Line Card TSLC 40 POWER H 41 Chapter 5 45 Software Structure 45 Overview 45 Software Structure 45 O M Provision 46 Database System 47 Operation Support System 49 Bearer System 52 Call Connection Syst...

Page 7: ...Message Format 65 Chapter 7 67 Networking Modes 67 Networking Modes 67 Networking in NGN 67 Networking for MSAN Upgrading to ZXMSG 5200 68 Application Examples 69 Residential Area Curb or Building in MAN 69 Use for the Reconstruction of Local Urban Call Network 70 Appendix A 71 Abbreviations 71 Index 77 Figures 79 Tables 81 ...

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Page 9: ...XMSG 5200 V2 0 Multiplex Service Gateway Technical Manual ZXMSG 5200 V2 0 Multiplex Service Gateway Installation Manual ZXMSG 5200 V2 0 Multiplex Service Gateway Operation Manual ZXMSG 5200 V2 0 Multiplex Service Gateway Maintenance Manual ZXMSG 5200 V2 0 Multiplex Service Gateway NMS Manual Purpose of this Technical Manual This technical manual focuses on system composition performance technical ...

Page 10: ...talics References to other guides and documents Quotes Links on screens Bold Menus menu options function names input fields radio button names check boxes drop down lists dialog box names window names CAPS Keys on the keyboard and buttons on screens and company name Constant width Text that you type program code files and directory names and function names Optional parameters Mandatory parameters ...

Page 11: ... Typeface Meaning Click Refers to clicking the primary mouse button usually the left mouse button once Double click Refers to quickly clicking the primary mouse button usually the left mouse button twice Right click Refers to clicking the secondary mouse button usually the right mouse button once Drag Refers to pressing and holding a mouse button and moving the mouse ...

Page 12: ...zardous situation which if not avoided could result in death or serious injury Caution Indicates a potentially hazardous situation which if not avoided could result in minor or moderate injury It may also be used to alert against unsafe practices Erosion Beware of erosion Electric shock There is a risk of electric shock Electrostatic The device may be sensitive to static electricity Microwave Bewa...

Page 13: ...te com cn You can also call our customer support center at 86 755 26771900 and 86 800 9830 9830 Documentation Support ZTE welcomes your comments and suggestions on the quality and usefulness of this document For further questions comments or suggestions on the documentation you can contact us by e mail at doc zte com cn or you can fax your comments and suggestions to 86 755 26772236 You can also e...

Page 14: ......

Page 15: ...ates access control transmission and other functions the switch thus is complicated and high in cost The NGN network equipment separates access control and transmission functions Firstly the transmission in the NGN is carried by IP base networks Secondly since the complexity of communication technologies between devices and networking is reduced in the IP network separation of subscriber access fr...

Page 16: ...access layer will prevent repeated network construction save equipment investment and facilitate operators uniform management of equipment and services Meanwhile it implements complete integration with the SDH MSTP IP base bearer networks and fully implements the narrowband voice data access at various speeds xDSL LAN and other broadband access at the subscriber side The diverse subscriber demands...

Page 17: ...f ZTE CORPORATION 17 integrated access network attracts attentions from both operators and manufacturers The fact most manufacturers are launching related equipment implies that the integrated media access equipment will become the next hotspot of access network ...

Page 18: ...ZXMSG 5200 V2 0 Technical Manual 18 Confidential and Proprietary Information of ZTE CORPORATION This page is intentionally blank ...

Page 19: ... based on uniform protocols The access equipment of the network provides a wide variety of access measures for subscribers It converts different subscriber services into a uniform format that can be transmitted in the network In the NGN the access equipment is called a media access gateway AG The AG plays a critical role in the NGN With the most construction efforts and direct touch of subscribers...

Page 20: ...ss ISDN access V5 access XDSL access and LAN access It also can access to IP network or ATM network Main Functions The ZXMSG 5200 can get analog POTS interface subscribers access to IP networks directly and implement voice fax conversion at the analog subscriber side and voice fax conversion at the IP network side The ZXMSG 5200 also can access common POTS interface subscribers to narrowband voice...

Page 21: ...ons The ZXMSG 5200 provides POTS and xDSL access at the subscriber side and provides IP uplink at the network side Narrowband services like POTS enter the TDM of ICS board for switching Voices are converted into IP packets through MPR s voice compressing functions The packets are switched by the Ethernet switching chip and sent to CNIC for network address conversion and then switched again to ente...

Page 22: ...8MHw 1 100M ICS CNIC 2 100M 1GE Control unit shelf Subscriber unit shelf LC Line Card including narrowband line card and broadband line card SLC Test Subscriber Line Card ICS Integrated Control and Switch Board MPR Packet processing and resource board CNIC Network address conversion module The ZXMSG 5200 hardware system consists of a control unit and a subscriber unit The control unit can implemen...

Page 23: ...mplementing database configuration and O M functions The H 248 system is responsible for maintaining connection between the ZXMSG 5200 and SOFTSWITCH interpreting and executing the SOFTSWITCH commands The service CALL system implements the H 248 command execution The H 248 describes calls and their operation logically Through bottom layer drive software the CALL implements physical operations on t...

Page 24: ...rface and is capable of extracting synchronous clocks through E1 The ZXMSG 5200 supports 100 Mbits s and 1000 Mbits s Ethernet interfaces at the IP network side which are used as egresses for narrowband media flow H 248 protocol flow and broadband data flow These three data flows can be flexibly configured on any uplink Ethernet port The ZXMSG 5200 supports networking with multiple SSs When many S...

Page 25: ... Dimensions Figure 4 shows a ZXMSG 5200 shelf FI GU RE 4 ZXMSG 5200 SHE L F RST RST ALM HOOK RUN ALC ALM 插插带带禁严 5V 5VJ 5V 48V RING POWER H RST RST ALM HOOK RUN ALC RST RST ALM HOOK RUN ALC RST RST ALM HOOK RUN ALC RST RST ALM HOOK RUN ALC RST RST ALM HOOK RUN ALC RST RST ALM HOOK RUN ALC ICS ICS RST RST TEST ALM RUN TSLC RST RST ALM HOOK RUN ALC ADL MPR MPR ADL The outline dimensions are 482 6 ...

Page 26: ...40 V AC DC voltage 56 V DC 40 V DC Power consumption 350 W maximum equipment power in the cabinet 1500 W power of air conditioners Working temperature 35ºC 55ºC Relative humidity 5 90 Temperature control solution To use industrial air conditioner Waterproof and dustproof requirements IP 5 5 level of the International Electrotechnical Commission IEC Internal battery Four pieces of 12V 100 Ah batter...

Page 27: ... Short term 0ºC 45ºC Humidity Long term 30 75 RH Optimum 50 60 RH Short term 20 90 RH Note The short term working condition allowed means 48 hours in succession and 15 days accumulated per year at most System Performance Indices Capacity Analog subscribers only 1 856 lines ADSL subscribers only 928 lines and 240 VOIP ports Processing Capabilities BHCA 20K Reliability System cold startup time is le...

Page 28: ...ps Objective Evaluation on Voice In a good network condition PSQM mean value is less than 1 5 Poor network condition packet loss ratio 1 network jitter 20 ms delay 100 ms PSQM mean value is less than 1 8 Worst network condition packet loss ratio 5 network jitter 60 ms delay 400 ms PSQM mean value is less than 2 0 Subjective Evaluation on Voice In a good network condition MOS 4 0 Poor network condi...

Page 29: ... party operators who can keep developing diversified new services for subscribers The application server can also be leased to enterprise group subscribers for providing customized services or serve as a VAS platform for network operators Available Services Basic voice service The basic voice service is a general term for all services with the purpose of implementing normal conversation among subs...

Page 30: ...stomer Generally they are provided by the interaction of the application server and SOFTSWITCH control equipment Multimedia service These services include point to multipoint multimedia communications multiparty multimedia conference service and other multimedia VASs which can be provided by the SOFTSWITCH control device or through the interaction between the application server and the SOFTSWITCH ...

Page 31: ...nd switch board ICS packet processing and resource board MPR power board PowerH line card and test subscriber line card TSLC The line card includes analog subscriber card ALC ISDN subscriber card DLC and ADSL subscriber card ADLG The line cards can be plugged in the ten line card slots of the main control shelf in random manner The subscriber shelf has two less MPR slots and two more line card slo...

Page 32: ...Control shelf Subscriber shelf Structure Layout Diagram Figure 6 shows the structure arrangement of the ZXMSG 5200 in a maximum configuration where there are five shelves including one main control shelf and four subscriber shelves The board is 6U high The system supports maximum 1 856 lines of narrowband subscribers where the main control shelf serves 320 lines and the extension shelf serves 384 ...

Page 33: ...C L C L C L C L C L C L C L C L C T S L C I C S I C S I C S I C S I C S I C S Board Overview Integrated Control Switch Board ICS 1 Functions i The ICS is a center for call control and service processing which monitors and manages other units and boards in the system and implements protocol interconnection with the SS The ICS is also the core of the system TDM switching Ethernet switching and clock...

Page 34: ...ted by changing the destination address of the RTP packet into the destination IP address in the system iv The ICS board works with dual CPUs The master CPU implements call processing H 248 protocol processing Ethernet layer 2 protocol processing TDM network and Ethernet switching network controls The slave CPU scans narrowband line cards and subscribers in the local shelf It communicates with the...

Page 35: ... indicator of uplink interface 2 Fast flashing indicates that uplink interface 2 is running 4 Panel interface ETHERENT 10 100M network interface for local debugging and maintenance 5 5 Technical Indices Board power consumption 20 W Packet Processing and Resource Board MPR 1 Functions The MPR provides VoIP and facsimile forwarding function for common telephone subscribers connecting into IP network...

Page 36: ...cators TAB L E 5 MPR IN D I C AT OR S LED Color Description Status Description RUN Green RUN indicator Flashing slowly indicates running normally ALM Red Fault indicator On constantly indicates a fault DSP1 Green DSP1 startup indicator If the green indicator flashes slowly it indicates that the DSP1 starts normally If the green indicator is on the DSP1 fails to start DSP2 Green DSP2 startup indica...

Page 37: ...tion in compliance with the standard K20 test conducted by the Ministry of Information Industry of China R Ringing S Supervision of the DC operating status of the subscriber ports C Codec that is the CODEC chip implements voice conversion between analog and digital signals H Hybrid 2 4 wire conversion T Test function provides internal and external interfaces for the tests 2 Panel Diagram Figure 9 ...

Page 38: ...tor is on 4 Technical Indices Subscriber feed voltage 48 V Subscriber feed current 0 02 A Ringing current 75 V Subscriber lines 32 Board power consumption 5 W ADSL Subscriber Card ADLG 1 Functions The card implements ADSL subscriber access The card is connected to other Ethernet switching devices through the Ethernet interface communicates with the main control board through HDLC to implement rela...

Page 39: ...ard is working normally ALARM On The card is abnormal ETHERNET On A link is present Blinking Data are being received transmitted for the 100 M Ethernet interfaces on the panel ADSL1 ADSL 1 is successfully set up ADSL2 ADSL 2 is successfully set up ADSL3 ADSL 3 is successfully set up ADSL4 ADSL 4 is successfully set up ADSL5 ADSL 5 is successfully set up ADSL6 ADSL 6 is successfully set up ADSL7 AD...

Page 40: ...mption 22 W Test Subscriber Line Card TSLC 1 Functions Testing external lines The card can be used to measure insulation resistance AC DC voltage inter line capacitance and DC loop resistance between A and B A and the ground and B and the ground of the external subscriber circuit lines Testing internal lines The card can be used to measure ringing output voltage and frequency detect signal tone te...

Page 41: ...n be used to test subscriber lines at multiple layers of subscriber units The test buses of these subscriber units must be interconnected through an interface on the backplane 5 Technical Indices Supported subscriber units 20 Board power consumption 5 W POWER H 1 Functions The POWER H is used to provide secondary power and ringing current for all subscriber shelves The POWER Hs at all layers can p...

Page 42: ...OWER H has six indicators on the panel ALM indicator 48 V indicator RING indicator 5 V indicator 5 VJ indicator and 5 V indicator When the POWER H runs properly the ALM is off and the RING flashes while indicators 48 V 5 V 5 VJ and 5 V are all on 4 I O Characteristics Input nominal voltage 48 V Input voltage range 60 V DC 38 V DC Maximum input wave peak peak value 250 mV Maximum peak value of inpu...

Page 43: ...oad burst the transient response of the output voltage shall be less than nominal 5 As the input connects or disconnects the overshoot value of the output voltage shall be less than nominal 2 Ringing current module handles ringing current They work in hot backup mode and are switched over automatically RINGA and RINGB are ringing ends RINGA provides ringing for the backplane at the local layer and...

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Page 45: ...nto operation support system bearer system H 248 system CALL system database system and NM system Being independent from each other each sub system communicates with others by a messaging mechanism Software Structure Figure 13 shows the system software structure FI GU RE 13 SO FT W AR E ST R U CT URE O F T HE ZXMSG 5200 SYS T E M Database system NM system Hardware platform Bearer system H 248 syst...

Page 46: ...M P OS IT ION OF T HE NMS Centralized maintenancemodule 拓扑管理 Topology management ZXMS G ZXMSG ZXMS G ZXMSG ZXMS G ZXMSG 安全管理 Security management 日志管理 Log management 策略管理 Policy management 告警服务器 Alarm server NM alarm server NM client TCP IP 拓扑管理 Topology management 安全管理 Security management 日志管理 Log management 策略管理 Policy management NM client TCP IP TCP IP TCP IPcommunica...

Page 47: ...nterfaces 2 System performance The database system can satisfy other modules requirements on data in the system and provides data loading when the system restarts proper and convenient data configuration and global data consistency in the system Data Structure The ZXMSG 5200 builds the data system on the foreground The Telnet mode provides data configuration The data maintenance and configuration ...

Page 48: ...tructure and an object oriented data organization mode The ZXMSG 5200 data are categorized into data table data table index and data table queue Every kind of data can be defined as system data object category The system will define and manage data in one same object category uniformly A concrete data object is called as a data instance of a certain data object category The system distributes an o...

Page 49: ...cesses which access to the database in a synchronous invocation mode with priorities not higher than data processes Since only the operating system process has a priority higher than the database and the access to the operating system is not frequent comparatively the two methods will not affect the system functions Service process most frequently accessing the database can adopt the synchronous i...

Page 50: ...faces are provided for the inter CPU communication system 3 Process dispatch This system provides an SDL process concept based on memory management and inter process communications also provides the upper level system with a virtual development environment which is process oriented and based on message driving 4 Time limit management This part provides processes with timer and software clock funct...

Page 51: ...r processes in the system and maintaining ICS working address 11 Alarm system The system being an alarm interface module implements operations as receiving foreground system alarms collecting alarms sending alarms to the background operating the warning box and receiving background queries 12 Startup control This part implements functions as controlling system startup consequence distributing star...

Page 52: ...et When the system receives a RTP packet the CNIC will distribute the RTP packet to the corresponding MPR board according to the packet s RTP number This procedure is implemented through changing the destination IP address of the RTP packet to the internal destination IP address of the system and changing the MAC address of the RTP packet to the internal MAC address of the system MPR Bearer Subsys...

Page 53: ...odules as MGCP and H 248 Call Connection Sub Modules Functions The whole call connection module consists of six sub modules AgCallCtl information distribution sub module AlsCall subscriber processing sub module RtpCall processing sub module Agtrace service tracing sub module and M05 module The AgCallCtl information distribution sub module provides the following functions Power on initialization an...

Page 54: ...path parameters The Agtrace service tracing sub module provides the following functions Call loss completion and measuring call loss according to failure types Suspended resource data area observation The M05 performance statistics sub module provides performance statistics for services and relevant modules H 248 System The H 248 system is responsible for maintaining connections between the ZXMSG ...

Page 55: ...d execute transaction commands in order and then submit commands to the semantics construe module for execution or receive transaction sending requests from the semantics construe module ensuring that the commands are sent to MGC successfully At Most Once and Three way Handshake are included Semantics construe module Construe Serves to construe the commands provided by Transaction and transform th...

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Page 57: ...OTS interfaces ADSL subscriber interface The system provides at most 928 ADSL subscriber interfaces Network Side Interfaces The system provides 100M and gigabit Ethernet interfaces at the network side for narrowband media stream H 248 protocol stream and broadband data stream The three data streams can be flexibly configured on any uplink Ethernet port Specifically 1000M optical interface and elec...

Page 58: ...parameters and set events to be checked on terminations Generally the Add command is used to add new terminations to a context In adding terminations if MGC has not defined an existing context MG will generate a new context A termination can quit from a context by using the Subtract command or move from one context to another by using the Move command A termination can only exist in one context at...

Page 59: ...deleted with the Subtract command For a semi permanent physical termination the Add command serves to add a termination from a null context into a material context and the Subtract command serves to move the termination into a null context The termination can play signal tones The signal means dial tones and notification tones generated by MG MGC can set a termination to detect some events such as...

Page 60: ...nd control contexts and terminations on MG command MG to implement different services and functions The H 248 protocol supports the following eight kinds of commands The parameters enclosed by are optional The command format is like Command response parameters Command type command parameter 1 Add direction MGC MG The Add command serves to add a termination into a context or create a new context if...

Page 61: ...r StatisticsDescriptor PackagesDescriptor Modify TerminationID MediaDescriptor ModemDescriptor MuxDescriptor EventsDescriptor SignalsDescriptor DigitMapDescriptor AuditDescriptor 3 Subtract direction MGC MG The Subtract command serves to quit a termination from an affiliated context and report termination statistics to MGC The context will be detected if the last termination is quit Command format...

Page 62: ...iptor SignalsDescriptor DigitMapDescriptor ObservedEventsDescriptor EventBufferDescriptor StatisticsDescriptor PackagesDescriptor Move TerminationID MediaDescriptor ModemDescriptor MuxDescriptor EventsDescriptor SignalsDescriptor DigitMapDescriptor AuditDescriptor 5 AuditValue direction MGC MG The AuditValue command serves to request MG to return the priority event signal and statistics of the cur...

Page 63: ...r EventBufferDescriptor StatisticsDescriptor AuditCapabilities TerminationID AuditDescriptor 7 Notify direction MG MGC The Notify command allows MG to notify MGC what events happen in MG Command format Notify TerminationID ObservedEventsDescriptor ErrorDescriptor 8 ServiceChange direction MG MGC The ServiceChange command allows MG to notify MGC that a termination or a group of terminations will qu...

Page 64: ...alControl descriptors of an individual media stream 6 LocalControl Descriptor Define some media stream related characteristics in a termination 7 Local and Remote Descriptor Local means media streams that are received by MG and Remote means media streams that are sent by MG MG uses the Local and Remote descriptors to reserve and use MG resources for media encoding for specified streams and their u...

Page 65: ...t is used for the Notify command notifying what event MGC has detected When it is used in the AuditValue command it returns events that are not notified and stored in the event buffer 17 Topology Descriptor Define the flow directions between the terminations in a context Message Format Figure 18 shows the message format for communications between MGC and MG FI GU RE 18 H 248 ME S S AG E ST RUC T U...

Page 66: ...XMSG 5200 V2 0 Technical Manual 66 Confidential and Proprietary Information of ZTE CORPORATION most once and provides the three handshake mode for improving transaction transfer and receiving reliability ...

Page 67: ...ed at a media gateway position in the NGN and works with other media gateways The application in the NGN is shown in Figure 19 FI GU RE 19 AP P L IC AT I O NS O F T H E ZXMSG 5200 I N T HE NGN IP ZXMSG 5200 POTS ADSL VDSL ISDN H 248 MGC H 248 SG TG PSTN The ZXMSG 5200 provides POTS ADSL VDSL ISDN and more accesses at the subscriber side and provides IP interfaces at the network side The system com...

Page 68: ...ata services access the IP network through the Ethernet interface while the narrowband services access the PSTN through the V5 interface FI GU RE 20 MSAN UPG R AD IN G T O T HE ZXMSG 5200 PSTN POTS ADSL VDSL ISDN IP V 5 MSAN upgraded to ZXMSG5200 When the MSAN upgrades to the ZXMSG 5200 the network side V5 interface shown in Fig 7 1 2 can be disconnected and the H 248 protocol will be transferred ...

Page 69: ... ADSL Interface 1 Interface 2 Residential area ZXMSG 5200 Building ZXMSG 5200 In such applications the ZXMSG 5200 is located at the end of the MAN This networking mode enables a wide variety of services due to the SoftSwitch network architecture At the same time it takes advantage of rich bandwidth resources in the MAN The urban calls are based on the G 711 coding mode so the voice quality can be ...

Page 70: ...s and the subscriber interface resources at central offices Despite of an innovative technology the NGN has no innovations in the access mode for subscribers As a result it is required to consider a smooth evolution in planning the transition of telecom network to NGN for both the telecom operators and the equipment manufacturers The PSTN can be gradually cut over into the new NGN at minimal cost ...

Page 71: ...nswer Seizure Ratio AT Active Tester ATM Asynchronous Transfer Mode AU Adaptation Unit AU Access Unit BCH Bids per Circuit per Hour BCM Basic Call Manager BER Bit Error Ratio BHCA Busy Hour Call Attempt BIOS Basic Input output System BRI Basic Rate Interface CAS Channel Associated Signaling CCF Call Control Function CCITT International Consultative Committee For Telephone and Telegraph CCS Common ...

Page 72: ...trol Frame D A Digital analogue Converter DC Direct Current DCN Data Communication Network DLC Digital Line Circuit DSLC Digital Subscriber Line Circuit DT Digital Trunk DTE Data Terminal Equipment DTM Digital Trunk Module DTMF Dual Tone Multi Frequency DRAM Dynamic Random Access Memory DUP Data User Part DWLL Digital Wireless Local Loop ICS Extended Process Unit EPROM Erasable Programmable Read o...

Page 73: ...ardization LAN Local Area Network LED Light Emitting Diode LE Local Exchange LIM Line Interface Module LSTP Low level Signaling Transfer Point LTM Line Trunk Module MAS Mass Calling MB2 Mux2 Board MCI Malicious Call Identification MCTL Mother Board of Control MFC Multi Frequency Control Receiver MG Media Gateway MGC Media Gateway Controller MMC Man Machine Communication MODEM Modulator Demodulator...

Page 74: ...ptical Line Terminal OMC Operation Maintenance Center OMM Operation Maintenance Module ONU Optical Network Unit OS Operation System OW Order Wire PCM Pulse Code Modulation PDH Plesiochronous Digital Hierarchy PHI Packet Handling Interface PHM Packet Handler Module PLL Phase Locked Loop POTS Plain Old Telephone Service PP Peripheral Processor PRM Premium Rate PSM Peripheral switching Module PSPDN P...

Page 75: ...nagement Layer SMP Service Management Point SMS Service Management System SNI Service Network Interface SNM Switching Network Module SNMP Simple Network Management protocol SP Signaling Point S P Serial to Parallel conversion SPC Stored Program Control SPL Split Charging SS Soft Switch SSP Service Switching Point SSU Signal and Switch Unit STB Signal Terminal Board STM Synchronous Transfer Module ...

Page 76: ...TRM Trunk Interface Module TSLC Test SLC TUP Telephone User Part UAN Universal Access Number UDR User Defined Routing UNI User Network Interface UPT Universal Personal Telecom VCC Voice Compress Card VCXO Voltage Controlled Crystal Oscillator VOD Video On Demand VOT Tele voting VOIP Voice Over IP VPN Virtual Private Network WAN Wide Area Network WARN Warning WDT Watch Dog WLL Wireless Local Loop ...

Page 77: ...Confidential and Proprietary Information of ZTE CORPORATION 77 Index ADLG 38 ALC 37 H 248 System 54 ICS 33 MPR 35 NGN 15 POWER H 41 TSLC 40 ...

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Page 79: ...re 10 Front Panel of ADLG 39 Figure 11 TSLC Panel 41 Figure 12 POWER H Panel 42 Figure 13 Software Structure of the ZXMSG 5200 System 45 Figure 14 Software Composition of the NMS 46 Figure 15 R System Modules 50 Figure 16 The interface model of call connection system 53 Figure 17 H 248 System Overall Structure 54 Figure 18 H 248 Message Structure 65 Figure 19 Applications of the ZXMSG 5200 in the ...

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Page 81: ...RATION 81 Tables Table 1 Typographical Conventions x Table 2 Mouse Operation Conventions xi Table 3 Safety Signs xii Table 4 ICS Indicators 35 Table 5 MPR Indicators 36 Table 6 ALC Indicators 38 Table 7 ADLG Indicators 39 Table 8 Output Characteristics 43 ...

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