The Structure of Background Network MP WIN2000 Server TCP/IP Protocol Client.. Client Router DDN PSTN/PSPDN MP
THE FEATURES OF THE ZXJ10 SWITCH Switching Network Module (SNM) Message Switching Module(MSM) Operation and Maintenance Module (OMM) Peripheral Switching Module (PSM) Remote Switching Module (RSM) MODULAR SYSTEM STRUCTURE Central module
THE 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 Module Level -1 Is PSM
Central module RSM RLM 1-level 2-level 3-level RSM PSM THE FEATURES OF THE ZXJ10 SWITCH ----CENTRAL MODULE.
RLM 1-level PSM RSM 2-level 3-level THE FEATURES OF THE ZXJ10 SWITCH ----A SINGLE PSM
PSM Access Way Fiber Bus Interface (FBI board RSM Access Way Digital Trunk Interface (DTI) Board Optical Digital Trunk(ODT) Board Built-in SDH THE 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.
MAIN FUNCTIONS OF A PSM In 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.
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THE STRUCTURE OF THE PSM Subscriber line unit 2 SP:Active/standby 2 SPI(SP interface);active/standby MTT(multi-task test board):used for subscriber line test Max.40 SLC(subscriber line circuit) Each SLC board can provides 24 subscriber lines A subscriber unit occupies 2 HWs and 2 Comm. ports
THE STRUCTURE OF THE PSM Digital trunk unit PCM 2Mb/s A A DT B B The Digital Trunk Unit Is the Interface Unit Between the Digital Switching System or Between Digital SPC Switches and Digital Transmission Devices.
THE STRUCTURE OF THE PSM Digital trunk unit DTI PCM1 PCM2 Provide 120 digital trunk subscribers for every board PCM3 PCM4 One DT unit only has one DTI board One DTI board has 4 PCM (sub-unit)
THE STRUCTURE OF THE PSM Analog signaling unit One Analog signaling unit only has one ASIG board. ASIG board can be configured as ---DTMF function ---MFC function ---TONE function ---CID function ---Conf. function
THE STRUCTURE OF THE PSM Switching Network Layer
THE STRUCTURE OF THE PSM Switching Network Unit DSN Work mode:active /standby DSN Unit Can Handle Time Slot Switching of the Voice Channel. And Control Message Channel Constitution:2 DSN boards
DIGITAL 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;
HWS 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
HWS DISTRIBUTION IN PSM DSN 01230123 Message communication 4 5 6 18 19 Inter-module connection 63 62 Self-looping testing Standby HW line 20 21 22 60 61 Connected with various units
standby active working active standby Working Mode: Active/Standby MP/DSN /DSNI-SP
HWS DISTRIBUTION IN PSM HW0~34HWUsed for Message Communication HW4-1916HWUsed For Inter-module Connections HW20-6142HW HW62 Usually a Standby HW Line, Though It Can Also Be for Communication Between Units Used for Self-looping TestingHW63 1HW SN. Function Used for Various Unit Connection 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;
The Message Channel MP COMMCOMM DSNI C HW0 至 HW3 DSN SNM or other PSM function unit DSNI-S FBI
DSNI-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
DSNI-S (DIGITAL SWITCHING NETWORK INTERFACE BOARD) Function: It Drives Transmission Between Function Unit and DSN. No Data Rate Conversion A Pair of DSNI Boards Can Handle 16 HWs. SP--DSNI-S--DSN An interface of SP level (SP – DSN)
THE VOICE CHANNEL Suppose 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
FBI (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 Signals It Can Reduce Connection Wires and Increase Anti- interference Ability of the System, and to Reduce Mutual Cross Talks Among Wires.
THE STRUCTURE OF THE PSM Clock synchronous part Retrieving the reference clock from the superior exchange(DTI or FBI),it provides synchronization timing signals SYCK CKI SYCK Working mode:Active/standby
THE STRUCTURE OF THE PSM Clock synchronous unit According to the reference clock generates the synchronous clock for the module or system(PSM). SYCK(synchronization oscillator) 2 SYCK boards 1 CKI board
Function is to provide generate system clock in case of reference failure for SYCK. CKI THE STRUCTURE OF THE PSM Clock synchronous unit
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Compact switching module Flexible configuration COMM board 9,10 slots: Inter-module communication 11,12 slots: Intra-module communication 13,14 slots: NO.7,V5 boards ASIG board: 19-21 slots: Can share trunk slots DT board: 22-26 slots: 25,26 slots can be shared by DTI and ODT. PCM1 PCM2 PCM3 PCM4 E1:
Flexible configuration: T Net & HW lines HW0--HW2: Used for communication HW1--HW3: Idle HW4-HW6: Distributed to ASIG HW7-HW9: Distributed to DT HW10-HW17: Distributed to ODT HW18-HW29: Distributed to SP HW30-HW31: Used for self-looping Compact switching module
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. RLM(RSU)
THE CIRCUIT DESCRIPTION Format: Module number_rack number_shelf number_board position number_circuit serial number
The circuit description Module number: PSM form an single module: #2 Rack number: 1 control rack and 1~4 subscriber rack. The control rack number:#1 The subscriber rack number:#2~#5
The circuit description Shelf number: 1# ~ 6# (starting from the bottom shelf ) Board position number: Circuit serial number: SLC:0~23 DTI: 0~127 1# ~ #27 0#~
The circuit description Subscriber line : Each analog subscriber board:24 subscriber circuits Each shelf;20 ASLC board Each subscriber unit :2 shelf Each subscriber unit:40*24=960 subscriber lines Each PSM: 13 subscriber units, 13*960=12480 subscriber lines
The circuit description Digital trunk : Each DTI board :4 PCM (4*2Mb/s ports=120 voice channel)
MP NT Server TCP/IP protocol NT Client.. NT Client router DDN PSTN/PSPDN MP
The Network Contain 3 Types of Nodes: Foreground Active/standby MP Background Servers(server) Background Maintenance Terminal(clients) The 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
The 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 nodes 134~187 are background Client nodes 254 is for the specific alarm panel.