system architecture of zxj10(v10.0) contents overall system structure the structure of peripheral...
TRANSCRIPT
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)
THE STRUCTURE OF THE PSM
• 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
THE STRUCTURE OF THE PSM
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
THE STRUCTURE OF THE PSM
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
THE STRUCTURE OF THE PSM
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.
THE STRUCTURE OF THE PSM
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
THE STRUCTURE OF THE PSM
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
THE STRUCTURE OF THE PSM
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
THE STRUCTURE OF THE PSM
Digital trunk unitDigital trunk unit
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.
THE STRUCTURE OF THE PSM
Digital trunk unitDigital trunk unit
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)
THE STRUCTURE OF THE PSM
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.
THE STRUCTURE OF THE PSM
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#
THE STRUCTURE OF THE PSM
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
THE STRUCTURE OF THE PSM
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
THE STRUCTURE OF THE PSM
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
THE STRUCTURE OF THE PSM
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
THE STRUCTURE OF THE PSM
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
The circuit descriptionThe 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 descriptionThe 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 descriptionThe circuit description
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
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
The structure of background networkThe 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.
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.