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ZXJ-10

ZXJ-10. SWITCHING SYSTEM. ZXJ10 Can be Used as:. PABX Local Exchange (C5 Office) Tandem Exchange (C4, C3, C2, C1) Hierarchy of PSTN: Regional Center (C1) Sectional Center (C2) Primary Center (C3) Toll Center (C4) End Office (C5) Subscriber Telephone (or PABX). System Features:.

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ZXJ-10

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  1. ZXJ-10 SWITCHING SYSTEM

  2. ZXJ10 Can be Used as: • PABX • Local Exchange (C5 Office) • Tandem Exchange (C4, C3, C2, C1) Hierarchy of PSTN: • Regional Center (C1) • Sectional Center (C2) • Primary Center (C3) • Toll Center (C4) • End Office (C5) • Subscriber Telephone (or PABX)

  3. System Features: Modularized Structure. CM: Central Module. • SNM: Switching Network Module. • MDM: Message Distribution Module. • OMM: Operation and Maintenance Module

  4. Modularized Structure. • PSM: Peripheral Switching Module • RSM: Remote Switching Module. • CSM: No.7 Signaling Module. • PHM: Packet Switching Module. • PMM: Position Management Module. • VSM: Voice Services Module. • INM: Intelligent Services Module. • ISM: Integrated Digital Services Module. • GSM: Global Mobile Switching.

  5. System Features: Fully Distributed Control System Each module has its own MP (Main Processor), and perform different functions. For instance, CM is responsible for internal communications between modules and exchange of voice channels. PSM/RSM performs the basic call processing functions. CSM is responsible for providing signaling links. This distributed control architecture facilitates linear expansion of both capacity and functions. If the customer needs larger capacity, what we need to do is to add PSMs/RSMs. If the customer needs new functions, all we need to do is to add different functional modules, like ISM, INM, GSM, etc.

  6. System Features: High Reliability • Since the system has modularized architecture, in case one module breaks down, it will affect only the subscribers in the module, the whole system will remain intact. • The key components of the modules of ZXJ10, such as NET, CKG, TONE, and MP all work in active/standby or load-sharing mode. • Message path is separated from speech path.

  7. System Features: • Unified inter-module interface and unit interfaces. This facilitates the adding of new service modules and new functional units. • Wide range of interfaces to different systems (like crossbar systems, and even step-by-step systems) • Rich functions, such as ISDN, CENTREX, CID, IN, etc. • User-friendly Man-Machine Interface

  8. User Side Network Side ZXJ10 Z Digital Trunk U (BRI) NT1 E/M Trunk ISPBX PRI LS/GS Trunk PBX SF2600 Trunk G.703 SF2400 Trunk V5.1/V5.2 AB Trunk AN ONU ABC Trunk A Magneto Trunk BSC System Features: A Broad Range of Interfaces

  9. INM PHM CSM RSU RSM PSM 2Mb/s, RSM 8Mb/s, CM 34Mb/s PSM Built-in optical terminal System Architecture

  10. RSM PSM RIM SNM STM MDM PSM CSM OMM ZXJ-10 System Structure The Constitution of the System • The system can have a maximum of 64 peripheral modules Synchronization Timing Module • The system can have a maximum of 50 peripheral switching modules.

  11. ZXJ-10 System Structure Configuration Mode -----PSM Forms an Independent Exchange. The Maximum System Capacity is 3584 Subscriber Lines and 480 Trunks PSM 2Mb/s To Superior Office No.7 A Pure Tandem Capacity Can Reach 960 Digital Trunks End Office 2Mb/s 2Mb/s Other Switch PSM To Superior Office No.7 End Office Tandem Office

  12. Telephone CSM STB #N 2B+D subscriber STB #1 MP #0 30B+D subscriber PHM PLC Telephone PSM PSM X.25PSPDN SNM MP MP MP PLC X.75PSPDN Operator Opticalfiber RSM Subscriber loop RIM PSM MP MP MP MP Common telephone subscriber MDM MP Harddisk OMM MP LAN LAN Billing O&M Station RemoteMaintenanceStation & PreprocessorNetworkManagement System Structure

  13. ZXJ-10 System Structure Configuration Mode The Maximum System Capacity is 170,000 Subscriber lines and 24,000 Trunks. -----The Multi-Module forms an Exchange. Central Module PSM PSM No.7 2Mb/S RIM CSM Other Office Optical Fiber RSM

  14. Peripheral Switching Module (PSM) Constitution: There can be a maximum of 48 function units,unit number is from 1 to 48. The distribution of the peripheral switching module units is:

  15. Peripheral Switching Module (PSM) Function unit: • The function unit is the basic function structure of a ZXJ10 module. All the functions performed by a switching system are distributed in the various function units. • Each function unit has One Peripheral Processor (PP) for control and management of circuits in the unit. Note:Only PSM and Central Module Have Function Unit.

  16. Peripheral Switching Module (PSM) PP to T-Net MT8980 Internal Circuits 8031 To MPPP

  17. Peripheral Switching Module (PSM) Description of the Various Units Subscribers Units (SLU) SLU PP SLC #0 SLC #1 SLC #2 SLC #3 SLC #4 SLC #5 SLC #6 SLC #7 8*16=128 0 1 2 15 Analog subscriber interface A PSM : Max 28*128=3584 Analog Subscribe Interfaces

  18. Peripheral Switching Module (PSM) Description of the Various Units Digital trunk units (DTU): The digital trunk unit is the interface unit between the digital switching system. A B DT DT PCM 2Mb/s DT PCM0 Provide 64 Trunks Interfaces PCM1 A PSM:8*60=480 Trunk Circuits The DTU only has one board:DT,the PP is fixed on this board

  19. Peripheral Switching Module (PSM) Description of the various units Multi-frequency compelled unit (MFC) The MFC unit handles the receiving and sending of inter-exchange MFC register signals. MFC Unit PP MFC MFC 2*16=32 A PSM :2*32=64 Sets 16 Sets of Transceivers

  20. Peripheral Switching Module (PSM) Description of the Various Units Dual Tone Multi-Frequency Receiver Unit (DTMF) The DTMF unit is used for receiving the dialed numbers by a DTMF subscriber phone and detecting the sending of the DTMF signals. DTMF Unit PP DTMF DTMF 2*16=32 A PSM :4*32=128 sets 16 Sets ofTransceivers

  21. Peripheral Switching Module (PSM) Description of the various units Signal tone unit (TONE) The signal tone unit can provide various tones for the call services of switching system. Active TONE Standby TONE One unit has one tone board,PP is fixed on the board

  22. Peripheral Switching Module (PSM) Description of the various units Digital signaling processing unit (DSPU) By merely changing the software, DSPU board can act as the DTMF unit, MFC unit, and the TONE unit. PP MFC MFC DSPU Replace PP DTMF DTMF TONE

  23. 1~4 TSLC Peripheral Switching Module (PSM) Description of the Various Units Testing Unit (TEST) It can perform testing the subscriber circuits ,the subscriber phones set and subscriber external lines. PP TSLC TSLC TSLC TSLC Testing Unit

  24. Peripheral Switching Module (PSM) Description of the Various Units Digital Time Division Switching Unit (TNET) TNET can handle time slot switching of the subscriber voice channel. In the PSM there are two TNET units NET0 NET1 Work Mode Load Sharing One TNET unit has one NET board,the PP is fixed on this board

  25. Peripheral Switching Module (PSM) Processor Board Module Main Processor (MP) • MP is the main processor for the various ZXJ10 modules,. In the whole module, MP is at the top of the control level. The MP mainly fulfill call processing and system management functions.. • Each module has two MPs, MP MP LAN Active Standby A Module

  26. PSM Cabinet Layout Control Cabinet #0 Subscriber Cabinet #1 Control Cabinet #0 Subscriber Cabinet #1 Control Cabinet #0 Subscriber Cabinet #2

  27. PSM Control Cabinet Layout(Front View) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 D S P U 1 D S P U 1 D S P U 1 D S P U 1 P P T S L C T S L C T S L C T S L C Power A D S P U 1 D S P U 1 D T D T D T D T D T D T D T D T Power A MP 0 D S P U 2 D S P U 2 S T B M P M P M P M P M P P P M P P P M P P P M P P P Power B MP 1 N E T D N E T D N E T C K G C K G N E T Power B P P P P S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C Power A P P P P S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C Power A

  28. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 P P P P S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C Power A P P P P S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C Power A P P P P S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C Power A P P P P S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C Power A P P P P S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C Power A P P P P S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C S L C Power A PSM Subscriber Cabinet Layout (Front View)

  29. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 C K G 0 C K G 1 D T 0 M P M P 0 D T 1 M P M P 1 D T 2 M P M P 2 D T 3 M P M P 3 D T 4 M P M P 4 D T 5 M P M P 5 D T 6 M P M P 6 D T 7 M P M P 7 M R I M Power B M R I M C K G 0 C K G 1 D T 0 M P M P 0 D T 1 M P M P 1 D T 2 M P M P 2 D T 3 M P M P 3 D T 4 M P M P 4 D T 5 M P M P 5 D T 6 M P M P 6 D T 7 M P M P 7 Power B M C T L MP0 M C T L S Y Z 0 S Y Z 1 D R V D R V M P M P M P M P M P M P M P M P M P P P M P P P S Y C MP1 Power B M S N M S N E T 0 S N E T 1 S N E T 2 S N E T 3 S N E T 4 S N E T 5 S N E T 6 C K G 0 C K G 1 M N E T 0 M N E T 1 Power D N E T D 0 N E T D 1 N E T D 2 N E T D 3 N E T D 4 N E T D 5 N E T D 6 N E T D 7 N E T D 8 N E T D 9 N E T D 10 N E T D 11 N E T D 12 N E T D 13 N E T D 14 N E T D 15 N E T D 16 N E T D 17 N E T D 18 N E T D 19 M D R V Power D CM Cabinet Layout (without CSM)

  30. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 C S M T C S M T S T B M P M P M P M P S T B S T B S T B S T B S T B M C C S Power B CSM0 MP M C C S C S M T C S M T S T B M P M P M P M P S T B S T B S T B S T B Power B CSM1 MP M C T L MP0 M C T L S Y Z 0 S Y Z 1 D R V D R V M P M P M P M P M P M P M P M P M P P P M P P P S Y C MP1 Power B M S N M S N E T 0 S N E T 1 S N E T 2 S N E T 3 S N E T 4 S N E T 5 S N E T 6 C K G 0 C K G 1 M N E T 0 M N E T 1 Power D N E T D 0 N E T D 1 N E T D 2 N E T D 3 N E T D 4 N E T D 5 N E T D 6 N E T D 7 N E T D 8 N E T D 9 N E T D 10 N E T D 11 N E T D 12 N E T D 13 N E T D 14 N E T D 15 N E T D 16 N E T D 17 N E T D 18 N E T D 19 M D R V Power D CM Cabinet Layout (With CSM)

  31. High Message Transmission Rate Between Each PSM PM(MP) #33 PM(MP) #1 2*2M 2*2M MDM 2*2M 2*2M PM(MP) #32 PM(MP) #64

  32. MDM The Voice Channel and the Control Message Channel are Separated. SNM PSM MP PSM MP MDM Interconnection Module • Note: • The interconnection network consist of SNM and MDM. • The voices of inter-module switch by the SNM, and the messages between MPs • in different modules are connected by MDM.

  33. SYZ (Synchronization Generator): • SYZ. Synchronization Generator) • To generate synchronous clock and synchronize central module and peripheral modules, and provide BITS interface. • SYC (Synchronization Control) • To control synchronization mode of SYZ. • CKG (Clock Generator) • To generate working clock for various functional units

  34. Working Mode: Active/Standby Standby Active Working Active Standby MP/TONE /CKG Working

  35. Peripheral Switching Module (PSM) Other Board Clock Driving Board (CKG): To Provide the Synchronization Working Clocks for the Module. CKG CKG Active Standby There are two CKG Boards in one PSM

  36. ZXJ10 Synchronization Mode: • Within the system, master/slave synchronization is adopted. Peripheral modules receive the clock signal (8kHz/4MHz) from the central module and are synchronized with the central module. While the central module receives clock reference from higher office clock signal through the 8 clock input ports.

  37. BITS (Building Integrated Timing System) • BITS provides clock reference for all equipment in the telecom network which needs synchronizing. Generally, it is equipped with cesium-beam atomic clock (oscillator). BITS is one of three supporting telecom networks, viz., CCS#7 network, TMN, and Digital Synchronization Network.

  38. In the PSM :4 MPPP Boards Peripheral Switching Module (PSM) Processor Board Communication Processor (MPPP, MPMP) ---Intra -Module Communication Processor Board (MPPP) The intra-module communication between each unit and MP is uniformly handled by the intra-module communication board MPPP, so it form the 2-level control system. MP MPPP PP PP PP

  39. MP MPMP MDM MPMP MP In a PSM:2 MPMP Boards MPMP PSM PSM Central Module Peripheral Switching Module (PSM) Processor Board Communication processor (MPPP, MPMP) ---Inter -Module Communication Processor Board(MPMP) • In a multi-module system, the inter-module communication processor (MPMP) transfer message between MP and MDM and ensure errorless message transmission .

  40. Peripheral Switching Module (PSM) Other Board No.7 Signaling Terminal (STB) The STB board performs the L2 (the link control layer) functions of the No.7 signaling. Each STB can provide two 64Kb/s No.7 signaling links. STB STB STB STB PSM acts as a single module PSM in multi-module system

  41. Peripheral Switching Module (PSM) Summary LAN MP0 MP1 BUS MPPP MPMP MPPP MPMP STB STB MPPP MPPP To MDM SS7 link Control PCM TONE TEST SLU DT DTMF MFC TONE Voice Channel PCM T-Net CKG 47 1-28 29-36 39-42 37-38 43-44 45- 46 To RSM for SNM/MDM NETD NETD To SNM

  42. Higher Level Reference Clock BITS 2:1 480DT 0 127 SLC LC 0…….7 SYC SYZ SLU 8K PP CKG Synchronous and Timing Module DT 8K 4M 0 HW0 HW29 0 127 To SNM SLU T Net 2K×2K 27 3584L 0 127 TONE SLU DSPU S U DLC NT1 PC DTMF MFC TAT TEST CPU TSLC No.7 V5 3Party Conference Telephone Processing Unit MP-PPMP-PPMP-PPMP-PP RAMRAMRAMRAMRAMRAMRAMRAM To MDM MP MP MP - MP STRUCTURE OF PSM

  43. The Central Module • Composition of the Central Module LAN Central Module MP MP STM MPMP MPPP MPMP Synchronization Timing Module SNM RIM MDM MPMP DT Switching Network Module Semi-Permanent Connection Nearby PSM Nearby PSM Remote PSM

  44. 6 5 4 3 2 1 NET 0 SNM The Central Module • Composition of the Central Module • The Switching Network Module (SNM) • SNM handles the voice channel switching between PSMs. • has a multi-plane structure, usually consisting of 7 SNET planes, Each plane is a network board(NET Board).

  45. MDM 1 NET 0 The Central Module • Composition of the Central Module • The Message Distribution Module (MDM) • MDM is the communication network connecting all module main processors (MP). MDN (Message Distribution Network ) consists of two NET boards.

  46. The Central Module • Composition of the Central Module • The Synchronization Timing Module (STM) • After retrieving the reference clock from the superior exchange ,it provides synchronization timing signals for PSMs, SNM, and MDM or the others. STM consists of one SYC and two SYZs. STM SYC SYZ SYZ

  47. MPMP DTRIM RIM MPMP DTRIM The Central Module • Composition of the Central Module The Remote Interface Module (RIM) RIM consists of the two MP MPs and two DTRIM boards. Each RIM has 4 PCMs system to RSM.

  48. The Central Module • Composition of the Central Module The Operation and Maintenance Module (OMM) OMM performs the multi-module operation and maintenance functions: billing, data maintenance, traffic statistics, and testing. It consists of one pair of active/standby MPs. LAN(NE2000) MP MP Foreground plate form LAN Background Plate Form Billing Operation and Maintenance(OAM) Testing OAM

  49. ZXJ-10 Switching Network

  50. Voice SNM Voice T T Message Message MP MP MDM PSM PSM Central Module SYSTEM SWITCHING NETWORK Constitution: • The System switching network includes the interconnection network module(SNM+MDM) and the network in the peripheral switching module. • The system switching network structure is T-T-T. • The ZXJ10 switching network is a time-division switching network.

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