GENERAL ARCHITECTURE OF OCB-283 SUBSYSTEMS & FUNCTIONS OF OCB-283
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
GENERAL ARCHITECTURE OF OCB-283
SUBSYSTEMS & FUNCTIONS OF OCB-283
GENERAL FUNCTIONAL BREAKDOWN OF ALCATEL 1000
E-10 (OCB-283)
SUBSCRIBER ACCESSSYSTEM
CONNECTIONAND
CONTROL
OPERATIONAND
MAINTENANCE
CCITT #7SIGNALLING
NETWORK
TELEPHONE NETWORK
DATANETWORK
VALUEADDED NETWORK
O&MNETWORK
DISK
MAGTAPEPABX
OCB-283 ARCHITECTUREOCB-283 COMPRISES OF FOLLOWING 3
SUBSYSTEMS
SUBSCRIBER ACCESSSYSTEM
CONNECTIONAND
CONTROL
OPERATIONAND
MAINTENANCE
CCITT #7SIGNALLING
NETWORK
TELEPHONE NETWORK
DATANETWORK
VALUEADDED NETWORK
O&MNETWORK
DISK
MAGTAPEPABX
• SUBSCRIBER ACCESS SUBSYSTEM
• CONTROL & CONNECTION SUBSYTEM
• OPERATION & MAINTENANCE SUBSYTEM
• Exchange has got 3 basic subsystems :-
•1 SUBSCRIBER ACCESS SUBSYSTEM
•2 CONNECTION & CONTROL SUBSYSTEM
•3. OPERATION & MAINTENANCE SUBSYSTEM
INTRODUCTION OF OCB-283
1. Subscriber Access Subsystem:-
•This is treated as an independent entity
•Every Subscriber Connecting Equipment Rack has got its Signalling Point Number to operate in Common Channel Signalling mode with rest of the exchange Subsystems.
INTRODUCTION OF OCB-283
2. Control & Connection Subsystem is the block consisting of
• A-CONTROL FUNCTIONS
• B-CONNECTION & SWITCHING EQUIPMENTS
INTRODUCTION OF OCB-283
INTRODUCTION OF OCB-283
• A-CONTROL FUNCTIONS
–COMPRISE OF COMMON CONTROL equipments which;
–process
–monitor
–& control the call setup & release
CONTROL SUBSYSTEM
• CONTROL SUBSYSTEM SUPPORTS ALL THE COMOMN CONTROL FUNCTIONS OF EXCHANGE WHICH SETUP & RELEASE A CALL
• COMMON CONTROL FUNCTIONS ARE :- MR,TR,TX,MQ,GX & PC
• IN SOFTWARE FORM THEY ARE CALLED LOGICAL MACHINES
• HARDWARE COMPONENT IS CALLED
MAIN CONTROL STATION SMC• ANY ONE OR MANY CONTROL FUNTIONS CAN
BE LOADED IN A HARDWARE STATION.
ROLE OF COMMON CONTROL FUNCTIONS
• THE MAIN CONTROL STATION SMC SUPPORTS THE FOLLOWING COMMOMN CONTROL FUNCTIONS FOR DOING THE DEFINED JOBS
- MR CALL HANDLER(OVERALL CONTROLLER OF CALLSETUP & RELASE)
- TR TRANSLATOR (DIGIT ANALYSIS & DATA )
- TX CHARGING DEVICE ( TAXING & METERS)
- MQMESSAGE DISTRIBUTOR (MARKING)
- GXMATRIX SYSTEM HANDLER (SWITCHING)
- PC CCS 7 SIGNALLING LINKS NETWORK CONTROLLER (MONITORING OF PUPE)
3. OPERATION & MAINTENANACE SUBSYTEM :-
FOR O&M OF EXCHANGE BY OPERATORS
INTRODUCTION OF OCB-283
LET US NOW UNDERSATAND
COMMON CHANNEL SIGNALLING
BEFORE GOING FURTHER
EXCHANGEA
EXCHANGEEXCHANGECC
EXCHANGEEXCHANGEBB
COMMON SIGNALLING CHANNELCOMMON SIGNALLING CHANNEL
VOICE CHANNELSVOICE CHANNELS
OCB-283 FOLLOWS CCITT-NO 7 SIG.PROTOCOL FOR OCB-283 FOLLOWS CCITT-NO 7 SIG.PROTOCOL FOR
COMMON CHANNEL SIGNALLINGCOMMON CHANNEL SIGNALLING
SIGNALLING TIME SLOT LINK CARRIES ALL THE SIGNALLING SIGNALLING TIME SLOT LINK CARRIES ALL THE SIGNALLING FOR ALL THE VOICE CHANNELS BETWEEN TWO EXCHANGESFOR ALL THE VOICE CHANNELS BETWEEN TWO EXCHANGES
functional
architecture of ocb-283
OM MQ GX MR TX TR PC
COMETA
PUPE
SMTURM
MCX
CSNL
CKTS
LR (4MB / S) DT
LR
LR
COMMUNICATION MULTIPLEXTMN
2 MB/SPCM
CSNDBT
OCB-283 FUNCTIONALDIAGRAM
SMA
SMX
OM MQ GX MR TX TR PC
COMETA
PUPE
SMTURM
MCX
CSNL
CKTS
LR (4MB / S) DT
LR
LR
COMMUNICATION MULTIPLEXTMN
2 MB/SPCM
CSNDBT
SMA
SMX
SUBSCRIBER ACCESS SUBSYSTEM
OM MQ GX MR TX TR PC
COMETA
PUPE
SMTURM
MCX
CSNL
CKTS
LR (4MB / S) DT
LR
LR
COMMUNICATION MULTIPLEXTMN
2 MB/SPCM
CSNDBT
SMA
SMX
CONNECTIONSUBSYSTEM
COMMUNICATION MULTIPLEX
OM MQ GX MR TX TR PC
COMETA
PUPE
SMTURM
MCX
CSNL
CKTS
LR (4MB / S) DT
LR
LR
TMN
2 MB/SPCM
CSNDBT
OCB-283 FUNCTIONALDIAGRAM
SMA
SMX
CONTROLSUBSYSTEM
OM MQ GX MR TX TR PC
COMETA
PUPE
SMTURM
MCX
CSNL
CKTS
LR (4MB / S) DT
LR
LR
COMMUNICATION MULTIPLEXTMN
2 MB/SPCM
CSNDBT
OCB-283 FUNCTIONALDIAGRAM
SMA
SMX
O & M SUBSYSTEM
IN OCB-283
CKTS
FUNCTIONAL EQUIPMENTS INVOLVED IN CALL HANDLING
CALL PROCESSING
OM
TR MR MQ GX PC
ETA
TX
MAS
MIS
SC SC
SC
MCX
COM
CSNL
CSND
CSNL
VC VC
SC
URM
PU/PE
SC: Signalling channelVC: Voice channel
• TS-16 OF LR 0 &LR 1 OF CSN ARE SIGNALLING CHANNELS SC SC BETN. CSN & THE EXCHANGE EQUIPMENT (PU/PE)
CALL PROCESSINGNEW CALL ORIGINATION
CKTS
OM
TR MR MQ GX PCTX
MAS
MIS
SC SC
SC
MCX
COM
CSNL
CSND
CSNL
VC VC
SC
URM
ETA
SC: Signalling channelVC: Voice channel
‘A’ ‘B’
PU/PE
• TS-16 OF LR 0 &LR 1 OF CSN ARE SIGNALLING CHANNELS SC SC BETN. CSN & THE EXCHANGE EQUIPMENT (PU/PE)
• NEW CALL MESSAGE COMES ON SIG.CHANNEL SC
CALL PROCESSINGNEW CALL ORIGINATION
CKTS
OM
TR MR MQ GX PCTX
MAS
MIS
SC SC
SC
MCX
COM
CSNL
CSND
CSNL
VC VC
SC
URM
ETA
SC: Signalling channelVC: Voice channel
‘A’ ‘B’
PU/PE
• NEW CALL MESSAGE IS SENT TO MR BY PUPE.
CALL PROCESSINGCALLING SUBS. COS IDENTIFICATION
CKTS
OM
TR MR MQ GX PCTX
MAS
MIS
SC SC
SC
MCX
COM
CSNL
CSND
CSNL
VC VC
SC
URM
ETA
SC: Signalling channelVC: Voice channel
‘A’ ‘B’
PU/PE
• NEW CALL MESSAGE IS SENT TO MR BY PUPE.• MR REQUESTS CALLING SUBSCRIBER DATA FROM TR ..OVER
MIS• TR PROVIDES CALLING SUB’S COS DATA TO MR
CALL PROCESSINGCALLING SUBS. COS IDENTIFICATION
CKTS
OM
TR MR MQ GX PCTX
MAS
MIS
SC SC
SC
MCX
COM
CSNL
CSND
CSNL
VC VC
SC
URM
ETA
SC: Signalling channelVC: Voice channel
‘A’ ‘B’
PU/PE
• MR REQUESTS MQ TO PROVIDE ADDRESS OF VC ON MCX (LR-LRX CORRESPONDENCE)
• MQ PROVIDES MCX SIDE ADDRESS TO MR
CALL PROCESSINGMCX SIDE ADDRESS OF VC
CKTS
OM
TR MR MQ GX PCTX
MAS
MIS
SC SC
SC
MCX
COM
CSNL
CSND
CSNL
VC VC
SC
URM
ETA
SC: Signalling channelVC: Voice channel
‘A’ ‘B’
PU/PE
CALL PROCESSING
• MR ORDERS MCX FOR CONNECTING DIAL TONE TO CALLING SUBS. ON LRS-TS VC
• DIAL TONE IS PROVIDED FROM MCX (DIALTONE GIVEN BY ETA’s TS-LRE TO MCX)
DIAL TONE PROVISION TO CALLING SUBS.
CKTS
OM
TR MR MQ GX PC
ETA
TX
MAS
MIS
SC SC
SC
MCX
COM
CSNL
CSND
CSNL
VC DT
SC
URM
SC: Signalling channelVC: Voice channel
‘A’ ‘B’
PU/PE
CALL PROCESSING
• FIRST DIGIT IS RECEIVED VIA VOICE CHANNEL VC IN RGF OF ETA (FOR DTMF SUBS.)
RECEPTION OF FIRST DIGIT
CKTS
OM
TR MR MQ GX PC
ETA
TX
MAS
MIS
SC SC
SC
MCX
COM
CSNL
CSND
CSNL
VC
RGF
SC
URM
SC: Signalling channelVC: Voice channel
‘A’ ‘B’
PU/PE
CALL PROCESSING
• FIRST DIGIT IS RECEIVED VIA VOICE CHANNEL VC IN RGF OF ETA (FOR DTMF SUBS.)
• ETA SENDS IT TO MR ON MAS• DIAL TONE IS CUT OFF ON ORDERS OF MR
RECEPTION OF FIRST DIGIT
CKTS
OM
TR MR MQ GX PC
ETA
TX
MAS
MIS
SC SC
SC
MCX
COM
CSNL
CSND
CSNL
VC
RGF
SC
URM
SC: Signalling channelVC: Voice channel
‘A’ ‘B’
PU/PE
CALL PROCESSING
• FIRST FEW DIGITS ARE PRE-ANALYSED ON REQUEST OF MR BY TR
• REMAINING DIGITS MAY BE STILL BEING RECEIVED
DIGIT ANALYSIS
CKTS
OM
TR MR MQ GX PCTX
MAS
MIS
SC SC
SC
MCX
COM
CSNL
CSND
CSNL
VC
RGF
SC
URM
SC: Signalling channelVC: Voice channel
‘A’ ‘B’
PU/PE
CALL PROCESSING• ANALYSIS OF DIGITS COMPLETED CALLED PARTY COS OBTAINED
ROUTING OF CALL -• MR ORDERS CSN-B TO TEST ‘B’ & GIVE VC FOR ‘B’• CSN-B TESTS ‘B’ AND GIVES RINGING TO ‘B’ • MCX GIVES RBT TO ‘A’
SELECTION
‘A’ ‘B’
CKTS
OM
TR MR MQ GX PC
A B
TX
MAS
MIS
SC SC
SC
MCX
COM
CSNL
CSND
CSNL
VC
RGF
SC
URM
SC: Signalling channelVC: Voice channel
PU/PE
CALL PROCESSING• CALLED PARTY B GOES OFF HOOK• CALLED PARTY’S CSN SENDS LOOP CONDITION & VC-B
INFORMATION TO MR OVER SC VIA PUPE• RINGING CURRENT & RBT ARE STOPPED
CALLED PARTY ANSWERS
‘A’ ‘B’
CKTS
OM
TR MR MQ GX PCTX
MAS
MIS
SC SC
SC
MCX
COM
CSNL
CSND
CSNL
VC-A
RGF
SC
URM
SC: Signalling channelVC: Voice channel
PU/PE
VC-B
‘A’ ‘B
CKTS
OM
TR MR MQ GX PCTX
MAS
MIS
SC SC
SC
MCX
COM
CSNL
CSND
CSNL
VC-A
RGF
SC
URM
SC: Signalling channelVC: Voice channel
PU/PE
CALL PROCESSING
• TWO UNIDIRECTIONAL CONNECTIONS ARE ESTABLISHED IN MCX ON ORDER OF MR VIA GX BETWEEN VC-A & VC-B
• ‘A’ & ‘ B ‘ CAN NOW CONVERSE
BOTHWAY CONNECTION
VC-B
‘A’ ‘B
CKTS
OM
TR MR MQ GX PCTX
MAS
MIS
SC SC
SC
MCX
COM
CSNL
CSND
CSNL
VC-A
RGF
SC
URM
SC: Signalling channelVC: Voice channel
PU/PE
CALL PROCESSING
• TWO UNIDIRECTIONAL CONNECTIONS ARE ESTABLISHED IN MCX ON ORDER OF MR VIA GX
• ‘A’ & ‘ B ‘ CAN NOW CONVERSE• CHARGING IS STARTED BY TX - MR RELEASED
CHARGING (METERING)
VC-B
OCB-283EXCH
AND YOUR METER
IS RUNNINGHERE!!!
Related Documents
