SYSTEM ARCHITECTURE OF ZXJ10(V10.0) CONTENTS Overall System Structure The Structure of Peripheral...

SYSTEM SYSTEM

ARCHITECTURE OF ARCHITECTURE OF

ZXJ10(V10.0) ZXJ10(V10.0)

CONTENTS

•Overall System Structure

•The Structure of Peripheral Switching

Module(PSM : 8k)

•4k and RLM Switching Network Module

•The Concrete Configuration of PSM

OVERALL SYSTEM STRUCTUREOVERALL SYSTEM STRUCTURE

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

MODULAR SYSTEM STRUCTURE

• Remote Subscriber Line Module (RLM)

• Packet Switching Handling Module (PHM)

• Mobile Switching Module (MPM)

• Internet Access Module (IAM) (IP access Server)

PERIPHERAL SWITCHING MODULE (PSM)

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 .

Control

cabinet #0

Subscriber

cabinet #1

Subscriber

cabinet #2

PSM cabinets

Subscriber

cabinet #3

Subscriber

cabinet #4

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27POWB

DTI

DTI

DTI

DTI

DTI

DTI

DTI

DTI

DTI

DTI

DTI

DTI

DTI

DTI

ASIG

ASIG

POWB

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

6

5

BDT

BDT

4

BCTL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

3

BNET

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

2

BSLC

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

1

BSLC

POWB

CKI

SYCK

SYCK

DSN

DSN

DSNI

DSNI

DSNI

DSNI

DSNI

D SNI

DSNI

DSNI

FBI

FBI

POWB

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

POWB

DTI

DTI

DTI

DTI

DTI

DTI

DTI

DTI

DTI

DTI

DTI

DTI

DTI

DTI

ASIG

ASIG

POWB

POWB

SMEM

MP

COMM

PEPD

POWB

MON

MP

COMM

COMM

COMM

COMM

COMM

POWA

SLC

POWA

SPI

SPI

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

POWA

SLC

POWA

MTT

SP

SP

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

8K SWITCHING MODULE

THE STRUCTURE OF THE PSM

• DTI: Digital Trunk Interface (One DTI Module is handle 4 PCM)

• SLU: Subscriber Line Unit (13 SLU in One PSM)

• SLC: Subscriber Line Circuit (One SLU have 40 SLC and One SLC have

24 Subscribers) • 40 X 24 = 960 Subscriber.

960 X 13 = 12480 Subscribers in one PSM.Maximum Subscriber Capacity is 500,000 Maximum Trunks Capacity is 64000 Trunks

• DSN: Digital Switching Unit (Simplified as T-Network)


• DSNI: Digital Switching Network Interface

• FBI: Fiber Bus Interface

• SYCK (Synchronization Oscillator)

• CKI Function is to provide generate system clock in case of reference failure for SYCK.

• MTT: Multi Task Test Board

• SP: Subscriber Processor

• SPI: Subscriber Processor Interface

• PEPD: Environment parameter detecting board

• ASIG: Analog Signaling Unit

• MP: Main Processor

• COMM: Communication Module

• MONI Monitoring board

1 2 3 4 5 6 7 8 9 10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

POWERA

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SPI

SPI

POWERA

POWERA

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

MTT

SP

SP

POWERA

POWERA

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SPI

SPI

POWERA

POWERA

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

MTT

SP

SP

POWERA

POWERA

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SPI

SPI

POWERA

POWERA

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

MTT

SP

SP

POWERA

THE STRUCTURE OF A PSM

×

Digital trunk unit

Subscriber unit

MFC

DTMF

TONE

8Mb/s

FBI SNM

COMM COMMV5.2No.7

16*8Mb/s

MP0 MP1

2 Mb/s

Signaling unit

2Mb/s

Switching unit

8K 8K


PSM Consists of the Following Basic Parts:

•Switching Unit

•Subscriber Unit

•Digital Trunk Unit

•Analog Signaling Unit

•Control Part

•Synchronization Part

1 2 3 4 5 6 7 8 9 10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

POWB

CKI

SYCK

SYCK

DSN

DSN

DSNI

BCTL

DSNI

BCTL

DSNI

DSNI

DSNI

DSNI

DSNI

DSNI

FBI

FBI

POWB


Switching Network LayerSwitching Network Layer

CKI: Function is to provide generate system clock in case of reference failure for SYCK

SYCK: Synchronization Oscillator

standby

active

working

workingactive

standby

Working Mode:

Active/Standby

MP/DSN /DSNI-SP


Switching Network UnitSwitching Network Unit

DSN 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

• 2 DSN Board in a PSM

• Working Mode :Active/standby

• Each DSN Board Is a Time Division Non-

blocking Switching Network With Embedded T&S

Structure

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;

THE STRUCTURE OF A PSM

Switching network unitSwitching network unit

T networkunit

……

…...

……

…...

012

31

63

6261

32

• 64 bi-directional HW at 8Mb/s(128TS)

• a 8K×8K T network.

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

DSNDSN

0123

Message communication

456

1819

Inter-module connection

63

62

Self-looping testing

Standby HW line

202122

6061

Connected with various units

HWS DISTRIBUTION IN PSM

HW0~3 4HW Used for Message Communication

HW4-19 16HW Used For Inter-module Connections

HW20-61 42HW

HW62 Usually a Standby HW Line, Though It Can Also Be for Communication Between Units

Used for Self-looping TestingHW63

1HW

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;

DSNI(DIGITAL SWITCHING NETWORK INTERFACE BOARD)

Classification:

•An interface of MP level (MP-T network)

•An interface of SP level (SP –T network)

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)

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.

FBI(Fiber Bus Interface)

Note :

When HW Lines 4~19 Are Used for Intra-module Unit

Connection,the FBI Board Must Be Replaced by the

DSNI.


Subscriber line unitSubscriber line unit

1 2 3 4 5 6 7 8 9 10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

POWA

SLC1

SLC2

SLC3

SLC4

SLC5

SLC6

SLC7

SLC8

SLC9

SLC10

SLC11

SLC12

SLC13

SLC14

SLC15

SLC16

SLC17

SLC18

SLC19

SLC20

SPI

SPI

POWA

POWA

SLC1

SLC2

SLC3

SLC4

SLC5

SLC6

SLC7

SLC8

SLC9

SLC10

SLC11

SLC12

SLC13

SLC14

SLC15

SLC16

SLC17

SLC18

SLC19

SLC20

MTT

SP

SP

POWA


Subscriber line unitSubscriber 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


Digital trunk unitDigital trunk unit

1 2 3 4 5 6 7 8 9 10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

POWB

DTI1

DTI2

DTI3

DTI4

DTI5

DTI 6

DTI7

DTI8

DTI9

DTI10

DTI11

DTI12

DTI13

DTI14

DTI15

DTI16

POWB



PCM 2Mb/s

AA DTDT BBDTDT

The Digital Trunk Unit Is the Interface Unit Between the Digital Switching System or Between Digital SPC Switches and Digital Transmission Devices.



DTI

PCM1

PCM2Provide 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)


Classification:

DTI can be configured asCAS

CCS

Module Connect(Connection between modules)

BRSU/ARSU (Connection with RLM/RSU)

ISDN PRA (Primary Rate ISDN)

•One digital trunk unit occupies 1 HW,1 comm. port.


Analog signaling unitAnalog 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

Analog signaling unitAnalog signaling unit

• Each ASIG Provides 120 Channels.

• One ASIG Board Is Divided Into 2 Sub-units,to Be Separately Configured.

DSP1#

DSP2#

ASIG-1: With all the chip Chip 1: TONE/DTMF/MFC/CID/CONF

Chip 2: TONE/DTMF/MFC/CID /CONFASIG-2: W/O Conf. Chip for both DSPs

Chip 1: DTMF/MFC/CID Chip 2: DTMF/MFC/CID

ASIG-3: With TONE only for DSP1 Without Conf.Chip for both DSPs

Chip 1: TONE/DTMF/MFC/CID Chip 2: DTMF/MFC/CID

DSP1#

DSP2#


POWB

SMEM

M P

M P

COMM1

C O M M2

C O M M3

C O M M4

C O M M5

C O M M6

COMM7

COMM8

STB

STB

STB

V5

PEPD

M ON

POWB

1 2 3 4 5 6 7 8 9 10 11121314151617181920 21222324252627

Control part


Control part

• A Pair of Active and Standby MP

• Shared Memory Board(SMEM)

• Communication Board(COMM)

• Monitor Board(MON)

• Peripheral Environment (PEPD)

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

The Message Channel

MP

C

O

M

M

DSNIC

HW0至

HW3

DSN

SNM or other PSM

function unit

DSNI-S

FBI


Clock synchronous partClock synchronous part

Retrieving the reference clock from the superior

exchange(DTI or FBI) ,it provides synchronization

timing signals

SYCK CKISYCK

Working mode:Active/standby

International office

Internationaloffice

TS TSLS

LS LS TMS

End officeRSM

Other country international

office

Plesiochronous

Master/slave

synchronization

BITS(building integrated

timing supply)

SYNCHRONIZATION MODESYNCHRONIZATION MODE

Plesiochronous

Master/slave

synchronization


Clock synchronous unitClock 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


Clock synchronous unitClock synchronous unit

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

6

5

BCTN

BSLC

4

BSLC

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

3

2

1

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

POWB

SMEM

MP

COMM

COMM

TNET

PEPD

MON

COMM

TNET

ASIG

ASIG

ASIG

DTI

DTI

DTI

DTI

POWB

DTI

MP

POWA

SLC

POWA

MTT

SP

SP

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

POWA

SLC

POWA

SPI

SPI

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

COMM

COMM

COMM

POWA

SLC

POWA

MTT

SP

SP

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

POWA

SLC

POWA

MTT

SP

SP

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

POWA

SLC

POWA

SPI

SPI

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

BSLC

BSLC

BSLC

4k Switch module

Compact switching moduleCompact 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:

HW 0-3 4 5 6 7 8 9 10-13 14-17

MP

..

ASIG

ASIG

DT

ODT

/DT

ODT

/DT

ASIG

....

DT

DT

Hw 0,2 for communication

Hw 1,3 idle

....

Hw 18-29 for SP

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 moduleCompact 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)RLM(RSU)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

6

5

BRSUBSLC

4

BSLC

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

3

2

1

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

POWB

REPD

REPD

R DT

R DT

R O DT

POWB

R DT

R DT

POWA

SLC

POWA

MTT

SP

SP

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

POWA

SLC

POWA

SPI

SPI

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

SLC

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

RSU

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.

The Configuration of PSMThe Configuration of PSM

THE CIRCUIT DESCRIPTIONTHE CIRCUIT DESCRIPTION

Format:

Module number_rack number_shelf number_board

position number_circuit serial number

The circuit descriptionThe 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


Shelf number:

1# ~ 6# (starting from the bottom shelf )

Board position number:

Circuit serial number:

SLC:0~23

DTI: 0~127

1# ~ #27

0#~


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


Digital trunk :

•Each DTI board :4 PCM

(4*2Mb/s ports=120 voice channel)

The structure of The structure of

background networkbackground network

MP NT Server

TCP/IP protoc

ol

NT Client NT Client

..

NT Client NT Client NT Client

router

DDNPSTN/PSPDN

MP

The Network Contain 3 Types of Nodes:

• Foreground Active/standby MP

• Background Servers(server)

• Background Maintenance Terminal(clients)

The structure of background networkThe 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


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.

ZXJ-10 System Feature

Feature of ZXJ-10

• Single Module• 12480 Subscribers• 2880 Digital Trunks• Traffic capacity: More than 4200 Erl.• BHCA: The tested result is more than 600K• 48 NO.7 links or 24 V5.2 interfaces.• Active/ Standby non-blocking switching network

of 8K×8K

Multi-Module. (62 Modules)

• 500000 Subscribers

• 64000 Digital Trunks

• Traffic Capacity: More than130000Erl

• BHCA: More than 7800K

• Switching Network can be 32K, 64K, 128K, and 256K

Operation and Maintenance

• According to the size of modules, SNM can be such types as of 32K, 64K, 128K, and 256K, of which 32k network can be employed to connect with 13 PSMs and 35 RSMs.

• The ZXJ10 SPC exchange employs the centralized maintenance & management mode. Its maintenance & management network has applied not only the client/server structure, which is based on the TCP/IP protocol, but also the WINDOWSNT4.0 operation system. Its contents contain such things as data, statistical traffic, billing, system measurement, system alarm, etc, which are substantial for the management and the maintenance of the exchange. The handling of the software and the data of the whole system is executed in OMM. Then SNM transmits the results to each peripheral module, and can be under remote operation as well as maintenance management.

• The main processor of MSM (or other PSM modules) can be connected into Ethernet via the standard TCP/IP protocol. Thus, the message inter working between OMM and the foreground processor is available.

Operation and Maintenance

MP

1

NT Server

TCP/IPPROO/////////////////

NT Client

NT Client

..

NT Client NT Client

NT Client

。。。

router

DDN

PSTN/PSPDN

MP

Rich Services

• Abbreviated dialing • Hot-line service with time-out• Call restriction• Don’t disturb service• Absent-subscriber service • Malicious call tracing• Interception of calls • Wake-up services• Call forwarding no reply• Call forwarding unconditional• Call forwarding on busy• Call back on busy

Rich Services

• Register on busy• Call waiting• Three party service• Conference calling• Caller identification (CID-I, CID-II)• Restriction to the caller identification • Customer own number reported service• Multiple subscriber number (MSN)• Office code restriction function: To any subscriber of ZXJ10,

the coded office numbers can be restricted at the maximum of 96

ZXJ-10 provides standard ISDN interfaces

• 2B+D interface

• 30B+D interface

The Standardized Supplementary Services

• Direct dial in (DDI)• Multiple subscriber number (MSN)• Calling line identification presentation (CLIP)• Calling line identification restriction (CLIR)• Connected line identification presentation (COLP)• Connected line identification restriction (COLR)• Sub-addressing (SUB)• Call forwarding on busy (CFB)• Call forwarding no reply (CFNR)

The Standardized Supplementary Services

• Call Forwarding Unconditionally (CFU)• Call Waiting (CW)• Call Holding (CH)• Terminal Portability (TP)• Conference Calling (CONF)• Three-Party Service (3PTY)• Closed User Group (CUG)• User-User Signaling Service

Extra New ISDN Services Besides the Supplementary Ones

• Don’t Disturb Service

• Hot Line Without Time-Out

• Call Out Restriction

• Wake-Up Service

NO.7 Signaling System

• The link number is more than 512, which can be up to 1280 when serving as the independent STP.

• The number of the signaling link groups is more than 256, which can be up to 640 when serving as the independent STP.

• The routing area number is over 2000.• The simultaneously supported signaling networks can be up to 8.• The load of each signaling link exceeds 0.8Erl.• The systematic GTT capability exceeds 4,000GTT/s.• The number of GT stored by GT translation table exceeds 200,000.• Serving as the independent STP, the system signaling processing capa

bility exceeds 40,000MSU/s.• Serving as the independent STP, the STP transit delay is below the nat

ional standard.

User Type

• Telephone Set, PABX

• Public phone (RASL( reverse polarity subscriber), PASL 16KC charging phone)

• DDN private line subscriber

• Centrex subscriber

• 2B+D and 30B+D subscribers

• IP Access subscriber

Numbering Plan

• The numbering plan can adapt such conditions as the local connection in the networks with both equal number length and unequal number length, the automatic, semi-automatic, manual connection of domestic and international long distance call, special call services, test call and also the numbering requirement when utilizing new services.

• The numbering plan is flexible. Number modification can be achieved by man-machine commands. It adapts the future change, increase and decrease in specific numbering mode.

Capability of Number Storage and Analysis

• Receiving and storing of 16-digit valid calling number, expandable to 20 digits.

• Analyzing 1 to 8 digits numbers by demand, to meet the requirement for determining the call type, route selection plan, called number length and charging rate. There are different number translation tables for different user groups.

• Number digits increasing, decreasing or translating according to the received number, income trunk or circuit services type. It meets the requirement of route selection or special connection establishment.

• The received number is delivered to the destination wholly or partly, and the transmission mode of end-to-end or link-by-link as well as the transmission mode in group or receiving-while sending mode is adopted.

• The capability of number processing and analyzing is adaptable to the requirement of future network change.

Routing

• In the range of nominal trunk amount, the number of trunk routes and circuits per route can be assigned according to requirement.

• To one target office, the number of direction for routing is not less than 5.

• Routing principle: choosing direct route at first, then choosing the first bypass route, then the second, choosing the final route at last.

• Complete utilization for the selection of each route circuit group. The traffic load of each circuit will be averaged.

• The office-to-office trunk of local offices group is utilized.

Time Monitor

• Not dialing after hook-off: 10 seconds• Not dialing between digits: 20 seconds• No answer of local call: 60 seconds• No answer of long distance call: 90 seconds• No answer of international call: 120 seconds• Howler tone: 60 seconds• Busy tone: 40 seconds (adjustable)

Capability of Traffic Load• The traffic load of trunk and subscriber line is shown as t

he following table:

Reference load Subscriber line Trunk

Load 0.25Erl/line 0.8Erl/trunk

Design of Reliability and Availability

• Hardware:• 1. The key parts adopt active /standby structure• 2. Hardware design• 3. SMT technology, ASIC, EPLD, FPGA and DSP technolo

gy is utilized.• 4. Optical fiber connection between modules• 5. High reliable components are adopted• 6. Meeting the electromagnetism compatible test• 7. Adopting the forced cooling mechanism• 8. Adopting three-level over-voltage, over-current p

rotection mode, it will recover automatically when over-voltage and over-current.

Software

• 1. Adopting object-orient technology, software engineering and modular design

• 2. Fully adopting HDLC protocol for communication in modules and between modules

• 3. Adopting advanced network OS and large scale relevant database

• 4. Adopting multiple level inspection, diagnosis and restart mechanism

• 5. Adopting multiple level protection mechanism in charging

• 6. Software trash processing program• 7. Adopting four-level load control

Subscriber Line and Signaling Receiver Inde

x Subscriber line index

– Subscriber loop resistance: <2000 Ohm (3000 Ohm max)

– Feed current: >18mA– Isolation resistance between lines and between line t

o ground: >20000 Ohm– Capacitance between lines: 0.7 μF

Subscriber signal index– Pulse receiver:– Pulse speed is 8~14 pulses/sec

Subscriber Line and Signaling Receiver Index

• Make-break ratio 1:1.6±0.3• Interval between pulse strings: 350ms• Subscriber signal index relative with MFPB telephone:• Reliable receiving within 2.0% frequency offset; No receiving

over 3.0% frequency offset; Receiving not for sure within 2.0%~3.0% frequency offset.

• While working in dual frequency, single frequency receiving level range is -4~-23dBm, single frequency no response level is -31dBm

• Level difference between two frequencies: <=-6dB

Over-Voltage Protection

• Exposed (no first level protection), the over-voltage protection ability is more than

• Thunder wave: 10μS/700μs, voltage peak value is 1000V

• Power line induction: voltage is 650 V r.m.s, duration time is 500ms

• Power line touch: voltage is 220V r.m.s, duration time is 15min.

• Unexposed (with first level protection), the over-voltage protection ability is more than

• Thunder wave: 10μS/700μs, voltage peak value is 4000V

• Power line induction: voltage is 650V r.m.s, duration time is 1s.

Network Synchronization

• The clock and synchronization of the ZXJ10 switch accords with the Recommendation of G.811, G.812 and G.813, providing the grade 2 and grade 3 clock.

• 1. Synchronization mode: master/slave.• 2. Clock working mode: both grade 2 and grade 3 clocks have

rapid capture, tracing, holding and free running mode.• 3. Redundancy: both grade 2 and grade 3 clocks have two

independent clocks with same function, while one clock is fault, another clock can work proper immediately. There are 2~4 selections for reference clock, and with failure auto-switchover function. The BITS interface function is included in the ZXJ10 switch.

• 4. Clock reliability: MTTR of ZXJ10 clock is more than 10 years.• 5. Accuracy: second level clock: ±4*10-7, third level clock:

±4.6*10-6

Network Synchronization

• 6. Initial max frequency offset: second level clock: <5*10-10, third level clock: <1*10-8

• 7. Max frequency offset: second level clock: <1*10-9/day, third level clock: <2*10-8/day

• 8. Draught range: second level clock: synchronized with the clock of ±4*10-7 accuracy. third level clock: synchronized with the

clock of ±4.6*10-6accuracy.• 9. Phase stability: change is less than 1/8 UI during the any time

of 211UI– While more or equal with 211UI, the phase change of every 211UI interva

l is less than 1/8 UI, and total wander is less than 1μs.– Long period phase change: in any term of S>=100s, the max time interval

error of output clock is less than 1μs.• 10. Synchronization link interface: meeting the ITU -T G.823.3.

SYSTEM ARCHITECTURE OF ZXJ10(V10.0) CONTENTS Overall System Structure The Structure of Peripheral...

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