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GENERAL ARCHITECTURE OF OCB-283. SUBSYSTEMS & FUNCTIONS OF OCB-283. GENERAL FUNCTIONAL BREAKDOWN OF ALCATEL 1000 E-10 (OCB-283). CCITT #7 SIGNALLING NETWORK. TELEPHONE NETWORK. SUBSCRIBER ACCESS SYSTEM. CONNECTION AND CONTROL. DATA NETWORK. VALUE ADDED NETWORK. DISK.

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general architecture of ocb 283

GENERAL ARCHITECTURE OF OCB-283

SUBSYSTEMS & FUNCTIONS OF OCB-283

general functional breakdown of alcatel 1000 e 10 ocb 283
GENERAL FUNCTIONAL BREAKDOWN OF ALCATEL 1000 E-10 (OCB-283)

CCITT #7

SIGNALLING

NETWORK

TELEPHONE

NETWORK

SUBSCRIBER

ACCESS

SYSTEM

CONNECTION

AND

CONTROL

DATA

NETWORK

VALUE

ADDED NETWORK

DISK

OPERATION

AND

MAINTENANCE

O&M

NETWORK

PABX

MAGTAPE

ocb 283 architecture ocb 283 comprises of following 3 subsystems
OCB-283 ARCHITECTUREOCB-283 COMPRISES OF FOLLOWING 3 SUBSYSTEMS
  • SUBSCRIBER ACCESS SUBSYSTEM
  • CONTROL & CONNECTION SUBSYTEM
  • OPERATION & MAINTENANCE SUBSYTEM

CCITT #7

SIGNALLING

NETWORK

TELEPHONE

NETWORK

SUBSCRIBER

ACCESS

SYSTEM

CONNECTION

AND

CONTROL

DATA

NETWORK

VALUE

ADDED NETWORK

DISK

OPERATION

AND

MAINTENANCE

O&M

NETWORK

PABX

MAGTAPE

slide4

INTRODUCTION OF OCB-283

  • Exchange has got 3 basic subsystems :-
      • 1 SUBSCRIBER ACCESS SUBSYSTEM
      • 2 CONNECTION & CONTROL SUBSYSTEM
      • 3. OPERATION & MAINTENANCE SUBSYSTEM
slide5

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.
slide6

INTRODUCTION OF OCB-283

  • 2. Control & Connection Subsystem is the block consisting of
    • A-CONTROL FUNCTIONS
    • B-CONNECTION & SWITCHING EQUIPMENTS
slide7

INTRODUCTION OF OCB-283

  • A-CONTROL FUNCTIONS
  • COMPRISE OF COMMON CONTROL equipments which;
    • process
    • monitor
    • & control the call setup & release
slide8

INTRODUCTION OF OCB-283

3. OPERATION & MAINTENANACE SUBSYTEM :-

FOR O&M OF EXCHANGE BY OPERATORS

slide10

OCB-283 FOLLOWS CCITT-NO 7 SIG.PROTOCOL FOR

COMMON CHANNEL SIGNALLING

COMMON SIGNALLING CHANNEL

EXCHANGE

B

EXCHANGE

A

VOICE CHANNELS

EXCHANGE

C

SIGNALLING TIME SLOT LINK CARRIES ALL THE SIGNALLING FOR ALL THE VOICE CHANNELS BETWEEN TWO EXCHANGES

slide12

MQ

GX

MR

TX

TR

PC

OCB-283 FUNCTIONAL

DIAGRAM

CSNL

SMX

LR (4MB / S)

DT

CSND

BT

2 MB/S

PCM

MCX

LR

LR

SMT

URM

COM

ETA

PU

PE

CKTS

SMA

COMMUNICATION MULTIPLEX

TMN

OM

slide13

MQ

GX

MR

TX

TR

PC

SUBSCRIBER ACCESS

SUBSYSTEM

CSNL

SMX

LR (4MB / S)

DT

CSND

BT

2 MB/S

PCM

MCX

LR

LR

SMT

URM

COM

ETA

PU

PE

CKTS

SMA

COMMUNICATION MULTIPLEX

TMN

OM

slide14

MQ

GX

MR

TX

TR

PC

CONNECTION

SUBSYSTEM

CSNL

SMX

LR (4MB / S)

DT

CSND

BT

2 MB/S

PCM

MCX

LR

LR

SMT

URM

COM

ETA

PU

PE

CKTS

SMA

COMMUNICATION MULTIPLEX

TMN

OM

slide15

CONTROL

SUBSYSTEM

MQ

GX

MR

TX

TR

PC

OCB-283 FUNCTIONAL

DIAGRAM

CSNL

SMX

LR (4MB / S)

DT

CSND

BT

2 MB/S

PCM

MCX

LR

LR

SMT

URM

COM

ETA

PU

PE

CKTS

SMA

COMMUNICATION MULTIPLEX

TMN

OM

slide16

MQ

GX

MR

TX

TR

PC

OCB-283 FUNCTIONAL

DIAGRAM

CSNL

SMX

LR (4MB / S)

DT

CSND

BT

2 MB/S

PCM

MCX

LR

O & M

SUBSYSTEM

LR

SMT

URM

COM

ETA

PU

PE

CKTS

SMA

COMMUNICATION MULTIPLEX

TMN

OM

slide18

CALL PROCESSING

MCX

CSNL

CSNL

SC

SC

VC

VC

CSND

URM

ETA

SC

COM

PU/PE

CKTS

SC

FUNCTIONAL EQUIPMENTS INVOLVED IN CALL HANDLING

MAS

TX

TR

MR

MQ

GX

PC

MIS

SC: Signalling channel

VC: Voice channel

OM

slide19

‘B’

‘A’

MCX

CSNL

CSNL

SC

SC

VC

VC

CSND

URM

ETA

SC

COM

PU/PE

CKTS

SC

MAS

TX

TR

MR

MQ

GX

PC

MIS

SC: Signalling channel

VC: Voice channel

OM

CALL PROCESSING

NEW CALL ORIGINATION

  • TS-16 OF LR 0 &LR 1 OF CSN ARE SIGNALLING CHANNELSSC BETN. CSN & THE EXCHANGE EQUIPMENT (PU/PE)
slide20

‘B’

‘A’

MCX

CSNL

CSNL

SC

SC

VC

VC

CSND

URM

ETA

SC

COM

PU/PE

CKTS

SC

MAS

TX

TR

MR

MQ

GX

PC

MIS

SC: Signalling channel

VC: Voice channel

OM

CALL PROCESSING

NEW CALL ORIGINATION

  • TS-16 OF LR 0 &LR 1 OF CSN ARE SIGNALLING CHANNELSSC BETN. CSN & THE EXCHANGE EQUIPMENT (PU/PE)
  • NEW CALL MESSAGE COMES ON SIG.CHANNEL SC
slide21

‘B’

‘A’

MCX

CSNL

CSNL

SC

SC

VC

VC

CSND

URM

ETA

SC

COM

PU/PE

CKTS

SC

MAS

TX

TR

MR

MQ

GX

PC

MIS

SC: Signalling channel

VC: Voice channel

OM

CALL PROCESSING

CALLING SUBS. COS IDENTIFICATION

  • NEW CALL MESSAGE IS SENT TO MR BY PUPE.
slide22

‘B’

‘A’

MCX

CSNL

CSNL

SC

SC

VC

VC

CSND

URM

ETA

SC

COM

PU/PE

CKTS

SC

MAS

TX

TR

MR

MQ

GX

PC

MIS

SC: Signalling channel

VC: Voice channel

OM

CALL PROCESSING

CALLING SUBS. COS IDENTIFICATION

  • 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
slide23

‘B’

‘A’

MCX

CSNL

CSNL

SC

SC

VC

VC

CSND

URM

ETA

SC

COM

PU/PE

CKTS

SC

MAS

TX

TR

MR

MQ

GX

PC

MIS

SC: Signalling channel

VC: Voice channel

OM

CALL PROCESSING

MCX SIDE ADDRESS OF VC

  • MR REQUESTS MQ TO PROVIDE ADDRESS OF VC ON MCX (LR-LRX CORRESPONDENCE)
  • MQ PROVIDES MCX SIDE ADDRESS TO MR
slide24

‘B’

‘A’

CALL PROCESSING

DIAL TONE PROVISION TO CALLING SUBS.

MCX

CSNL

CSNL

SC

SC

VC

DT

CSND

URM

ETA

  • 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)

SC

COM

PU/PE

CKTS

SC

MAS

TX

TR

MR

MQ

GX

PC

MIS

SC: Signalling channel

VC: Voice channel

OM

slide25

‘B’

‘A’

CALL PROCESSING

RECEPTION OF FIRST DIGIT

MCX

CSNL

CSNL

SC

SC

VC

CSND

URM

ETA

RGF

  • FIRST DIGIT IS RECEIVED VIA VOICE CHANNEL VC IN RGF OF ETA (FOR DTMF SUBS.)

SC

COM

PU/PE

CKTS

SC

MAS

TX

TR

MR

MQ

GX

PC

MIS

SC: Signalling channel

VC: Voice channel

OM

slide26

‘B’

‘A’

CALL PROCESSING

RECEPTION OF FIRST DIGIT

MCX

CSNL

CSNL

SC

SC

VC

CSND

URM

ETA

RGF

  • FIRST DIGIT IS RECEIVED VIA VOICE CHANNEL VC IN RGFOF ETA (FOR DTMF SUBS.)
  • ETA SENDS IT TO MR ON MAS
  • DIAL TONE IS CUT OFF ON ORDERS OF MR

SC

COM

PU/PE

CKTS

SC

MAS

TX

TR

MR

MQ

GX

PC

MIS

SC: Signalling channel

VC: Voice channel

OM

slide27

‘B’

‘A’

CALL PROCESSING

DIGIT ANALYSIS

MCX

CSNL

CSNL

SC

SC

VC

CSND

URM

RGF

  • FIRST FEW DIGITS ARE PRE-ANALYSED ON REQUEST OF MR BY TR
  • REMAINING DIGITS MAY BE STILL BEING RECEIVED

SC

COM

PU/PE

CKTS

SC

MAS

TX

TR

MR

MQ

GX

PC

MIS

SC: Signalling channel

VC: Voice channel

OM

slide28

CALL PROCESSING

SELECTION

‘B’

‘A’

MCX

CSNL

CSNL

SC

SC

A

B

VC

CSND

URM

RGF

  • 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’

SC

COM

PU/PE

CKTS

SC

MAS

TX

TR

MR

MQ

GX

PC

MIS

SC: Signalling channel

VC: Voice channel

OM

slide29

‘B’

‘A’

CALL PROCESSING

CALLED PARTY ANSWERS

MCX

CSNL

CSNL

SC

SC

VC-B

VC-A

CSND

URM

RGF

  • 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

SC

COM

PU/PE

CKTS

SC

MAS

TX

TR

MR

MQ

GX

PC

MIS

SC: Signalling channel

VC: Voice channel

OM

slide30

‘B

‘A’

CALL PROCESSING

BOTHWAY CONNECTION

MCX

CSNL

CSNL

SC

SC

VC-B

VC-A

CSND

URM

RGF

  • TWO UNIDIRECTIONAL CONNECTIONS ARE ESTABLISHED IN MCX ON ORDER OF MR VIA GX BETWEEN VC-A & VC-B
  • ‘A’ & ‘ B ‘ CAN NOW CONVERSE

SC

COM

PU/PE

CKTS

SC

MAS

TX

TR

MR

MQ

GX

PC

MIS

SC: Signalling channel

VC: Voice channel

OM

slide31

‘B

‘A’

CALL PROCESSING

CHARGING (METERING)

MCX

CSNL

CSNL

SC

SC

VC-B

VC-A

CSND

URM

RGF

  • 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

SC

COM

PU/PE

CKTS

SC

MAS

TX

TR

MR

MQ

GX

PC

MIS

SC: Signalling channel

VC: Voice channel

OM

slide32

OCB-283

EXCH

AND YOUR

METER

IS RUNNING

HERE!!!