6The Structure of Background Network WIN2000 ServerMPMPTCP/IPProtocolRouterClientClient..DDNPSTN/PSPDNClientClientClient
7THE FEATURES OF THE ZXJ10 SWITCH MODULAR SYSTEM STRUCTURE Switching Network Module (SNM)Message Switching Module(MSM)Operation and Maintenance Module (OMM)Peripheral Switching Module (PSM)Remote Switching Module (RSM)Central module
8THE FEATURES OF THE ZXJ10 SWITCH -----The Multi-module Forms an Exchange.With a 2-level or 3-lever Networking Capability,Module Can Further Carry Modules.Two Cases:Level -1 Is Central ModuleLevel -1 Is PSM
9THE FEATURES OF THE ZXJ10 SWITCH ----CENTRAL MODULE.Central module1-levelPSMRSMRSM2-levelPSMRSMRSM3-levelRSMRLM
10THE FEATURES OF THE ZXJ10 SWITCH ----A SINGLE PSM1-levelPSMRLM2-levelRSMPSM3-levelRSMRSMRLMRLMRLM
11THE FEATURES OF THE ZXJ10 SWITCH PSM Access Way Fiber Bus Interface (FBI boardRSM Access Way Digital Trunk Interface (DTI) BoardOptical Digital Trunk(ODT) BoardBuilt-in SDH
12THE FEATURES OF THE ZXJ10 SWITCH Fully Distributed Control Mode Units have their own separate control modules while the MP supervises the overall control of all the different units.
14MAIN FUNCTIONS OF A PSMIn the Single Modules Office ,It Performs the PSTN,ISDN Subscriber Access and Call Handling,In a Multi-module Office ,It Is Connected Into the Central Module As One of the Module Offices .
15PSM cabinets Control cabinet #0 Subscriber cabinet #1
18THE STRUCTURE OF THE PSM PSM Consists of the Following Basic Parts:Switching UnitSubscriber UnitDigital Trunk UnitAnalog Signaling UnitControl PartSynchronization Part
19THE STRUCTURE OF THE PSM Control partA Pair of Active and Standby MPShared Memory Board(SMEM)Communication Board(COMM)Monitor Board(MON)Peripheral Environment (PEPD)
20THE STRUCTURE OF THE PSM Subscriber line unit123456789POWASLCIPOWASLC123456789MTA
21THE STRUCTURE OF THE PSM Subscriber line unit2 SP:Active/standby2 SPI(SP interface);active/standbyMTT(multi-task test board):used for subscriber line testMax.40 SLC(subscriber line circuit)Each SLC board can provides 24 subscriber linesA subscriber unit occupies 2 HWs and 2 Comm. ports
23THE STRUCTURE OF THE PSM Digital trunk unitThe Digital Trunk Unit Is the Interface Unit Between the Digital Switching System or Between Digital SPC Switches and Digital Transmission Devices.ABDTDTPCM 2Mb/s
24THE STRUCTURE OF THE PSM Digital trunk unitOne DT unit only has one DTI boardOne DTI board has 4 PCM (sub-unit)DTIPCM1Provide 120 digital trunk subscribers for every boardPCM2PCM3PCM4
25THE STRUCTURE OF THE PSM Analog signaling unitOne Analog signaling unit only has one ASIG board.ASIG board can be configured as---DTMF function---MFC function---TONE function---CID function---Conf. function
26THE STRUCTURE OF THE PSM Switching Network Layer123456789POWBCKISYDNTLF
27THE STRUCTURE OF THE PSM Switching Network UnitDSN Unit Can Handle Time Slot Switching of the Voice Channel. And Control Message ChannelConstitution:2 DSN boardsDSNDSNWork mode:active /standby
28DIGITAL SWITCHING NETWORK Main Function:Performing Voice Channel Connection Switching of Subscribers Inside the Module;Interconnected With Central Switching Network Module to Realize Inter-module Voice Channel Connection;For Mp to Set up Message Switching Connection and Communication Via Semi-permanent Connections With Function Units;
29HWS DISTRIBUTION OF DSN IN PSM Each DSN board has 64 HWS.A HW bus rate is 8Mb/s(128ts)Each DSN board has a capacity of 8K*8K time slots
30HWS DISTRIBUTION IN PSM Message communication123DSN2021224561819Connected with various unitsInter-module connection6061Standby HW line6263Self-looping testing
31Working Mode: Active/Standby active standby MP/DSN /DSNI-SP
32HWS DISTRIBUTION IN PSM Those Starting HW20 Upward Are Used for Connection With Subscriber Units. Each Subscriber Unit Seizes Two HW Lines;Those Starting Hw61 Downward Are Used for Connection With Digital Trunks and Analog Signaling Units. Each Unit Seizes One HW Line;FunctionSN.HW0~34HWUsed for Message CommunicationHW4-1916HWUsed For Inter-module ConnectionsHW20-6142HWUsed for Various Unit ConnectionUsually a Standby HW Line, Though It Can Also Be for Communication Between UnitsHW621HWHW631HWUsed for Self-looping Testing
33The Message Channel SNM or other PSM DSNIC HW0至HW3 FBI MP C O M DSN DSNI-Sfunction unit
34DSNI-C (DIGITAL SWITCHING NETWORK INTERFACE BOARD) Function:An interface of MP level (MP- DSN)It Drives the Various Signals Transmitted Between MP and DSN.It Performs the Conversion of 8mb/s Data Stream and 2mb/s Data Stream.A Pair of DSNI Boards Handle 4 HWs.MP--COMM--DSNI-C--DSN
35DSNI-S (DIGITAL SWITCHING NETWORK INTERFACE BOARD) Function:An interface of SP level (SP – DSN)It Drives Transmission Between Function Unit and DSN.No Data Rate ConversionA Pair of DSNI Boards Can Handle 16 HWs.SP--DSNI-S--DSN
36SP---DSNI---DSN(T-network)---DSNI---SP THE VOICE CHANNELSuppose one subscriber in one SLU call another subscriber in another SLU,the voice channel will be as follows.SP---DSNI---DSN(T-network)---DSNI---SP
37FBI (Fiber Bus Interface) It Applies Synchronous Multiplexing Technique and Optical Fiber Technique to Implement the Interconnections of Modules .It Uses Two Optical Fiber Lines to Transmit up to 16 Lines of 8mb/s PCM SignalsIt Can Reduce Connection Wires and Increase Anti-interference Ability of the System, and to Reduce Mutual Cross Talks Among Wires.
38THE STRUCTURE OF THE PSM Clock synchronous partRetrieving the reference clock from the superior exchange(DTI or FBI) ,it provides synchronization timing signalsSYCKSYCKCKIWorking mode:Active/standby
39THE STRUCTURE OF THE PSM Clock synchronous unit2 SYCK boards1 CKI boardSYCK(synchronization oscillator)According to the reference clock generates the synchronous clock for the module or system(PSM).
40THE STRUCTURE OF THE PSM Clock synchronous unitCKIFunction is to provide generate system clock in case of reference failure for SYCK.
42Compact switching module Flexible configurationCOMM board9,10 slots: Inter-module communication11,12 slots: Intra-module communication13,14 slots: NO.7,V5 boardsASIG board:19-21 slots: Can share trunk slotsDT board:22-26 slots:25,26 slots can be shared by DTI and ODT.PCM1PCM2PCM3PCM4E1:
43HW 0-3 4 5 6 7 8 9 10-13 14-17 Hw 0,2 for communication Hw 1,3 idle Hw for SP..MP......ASIGASIGASIGDTDTDTODT/DTODT/DT..HW
44Compact switching module Flexible configuration:T Net & HW linesHW0--HW2: Used for communicationHW1--HW3: IdleHW4-HW6: Distributed to ASIGHW7-HW9: Distributed to DTHW10-HW17: Distributed to ODTHW18-HW29: Distributed to SPHW30-HW31: Used for self-looping
45RLM(RSU) RLM:Remote subscriber line module , RSU It is a subscriber unit used in a remote subscriber group .Each RLM is usually restricted to with in 960 subscriber lines.The way of connection between the PSM and RLM can be RDT board or RODT board.
47---used also as the DTMF number receiver and TONE voice resource. MTT (multi-task test)board:---used also as the DTMF number receiver and TONE voice resource.REPD board:----control the power board and ODT board----clock synchronization for RLM.
56The structure of background network The Network Contain 3 Types of Nodes:Foreground Active/standby MPBackground Servers(server)Background Maintenance Terminal(clients)
57The structure of background network MP (foreground ) connects with background by the Ethernet.It uses the HUB to connect each other.The communication protocol is TCP/IP.The operating system of Sever and Client is WINDOWS NT
58The structure of background network Each MP and the computer in background have a IP address respectively.The arrangement is as follows:1~128 identify the active/standby Mps of the 64 modules(MP nodes)129~133are background NT Server nodes134~187 are background Client nodes254 is for the specific alarm panel.