TOPICS FOR CASE STUDY / PORJECT

REPORT FOR SUMMER TRAINING

CUSTOMER RENTENTION IN BSNL OF (A) LAND

LINE OR (B) BROADBAND OR (C) WLL OR (D)

MOBILE OR (E) VALUE ADDED SERVICES.

CUSTOMER SATISFACTION IN BSNL IN

WESTERN UP CIRCLE.

HOW TO IMPROVE MARKET SHARE AND

INCREASE THE REVENUE WITH EXISTING

CONSTRAINTS.

RESTRUCTURING OF BSNL IS INEVITABLE.

HRD POLICY REFORMS IN BSNL.

HOW TO IMPROVE CORPORATE ACCOUNTING

TRA ACCOUNTING.

POWER SUPPLY :

EXCHANGE AND RSU -48 V

OMC 220 V, 50 HZ

ORGAN CONTROL EXCHANGEVERSION B

ALCATEL 1000 E-10 IS THE DIGITAL SWITCHING SYSTEM DEVELOPED BY ALCATEL CIT. IT PROVIDES ALL MODERN COMMUNICATION SERVICES:

O BASIC TELEPHONY ISDN,O DIGITAL CELLULAR RADIO TELEPHONY AND O ALL THE INTELLIGENT NETWORK APPLICATIONS

THE ALCATEL E-10 SYSTEM IS LOCATED AT THE HEART OF THE TELECOMMUNICATION NETWORKS CONCERNED. IT IS MADE UP OF THREE INDEPENDENT FUNCTIONAL UNITS:

THE "SUBSCRIBER ACCESS SUBSYSTEM" WHICH CARRIES OUT CONNECTIONS OF ANALOG AND DIGITAL SUBSCRIBER LINES,

" CONNECTION AND CONTROL" WHICH CARRIES OUT CONNECTIONS AND PROCESSING OF CALLS,

"OPERATION AND MAINTENANCE" WHICH IS RESPONSIBLE FOR ALL FUNCTIONAL IS NEEDED BY THE NETWORK OPERATING AUTHORITY.

EACH FUNCTIONAL UNIT IS EQUIPPED WITH SOFTWARES WHICH ARE APPROPRIATE FOR HANDLING THE FUNCTIONS FOR WHICH IT IS RESPONSIBLE.

OCB283 FUNCTIONAL ARCHITECTURE :

Subscriber Access Subsystem LRCSNL

LR LRCSND

(CSED)

TMN

PGS

1. TIME BASE (BT) :

THE BT ENSURES TIMES DISTRIBUTION FOR LR AND PCM TO PROVIDE THE SYNCHRONISATION, AND ALSO FOR WORKING OUT THE EXCHANGE CLOCK.

2. HOST SWITCHING MATRIX (SMX):

IT IS A SQUARE CONNECTION MATRIX WITH A SINGLE TIME STAGE,T, DUPLICATED IN FULL, WHICH ENABLES UP TO 2048 MATRIX LINKS (LR) TO BE CONNECTED. THE CONNECTION CAPACITY OF THE HOST SWITCHING MATRIX RANGES UP TO 2048 PCM.

THE MCX IS CONTROLLED BY THE COM FUNCTION (MATRIX SWITCH CONTROLLER) TO ENSURE THE

SMX

URMCOM

BT

ETA PUPE

Communication Multiplex

OM MQ GX PCTRTXMR

O SETUP AND BREAKDOWN OF THE CONNECTIONS

O SECURITY OF THE CONNECTIONS IN ORDER TO ASSURE A GOOD DATA SWITCHING .

3. PCM CONTROLLER (URM):

THE URM PROVIDES THE INTERFACE BETWEEN EXTERNAL PCMS AND THE OCB-283. THESE PCM COME FROM EITHER:

O A REMOTE SUBSCRIBER DIGITAL ACCESS UNIT(CSN) OR FROM A REMOTE ELECTRONIC SATELLITE CONCENTRATOR CSE,

O ANOTHER SWITCHING CENTRE, ON CHANNEL -ASSOCIATED SIGNALING OR CCITT NO.7,

O THE DIGITAL RECORDED ANNOUNCEMENT EQUIPMENT.

4. AUXILLARY EQUIPMENT MANAGER (ETA):

O THE ETA SUPPORTS: O THE TONE GENERATORS(GT), O THE FREQUENCY RECEIVING AND GENERATION(RGF) DEVICES, O THE CONFERENCE CIRCUITS(CCF), O THE EXCHANGE CLOCK.

5. CCS7 PROTOCOL HANDLER(PUPE) AND CCS7 CONTROLLER (PC):

CCITT NO.7 PROTOCOL PROCESSINGTHE PUPE FUNCTION CARRIES THE MESSAGE ROUTING FUNCTION.THE PC CARRIES OUT THE " NETWORK MANAGEMENT" FUNCTION

6. CALL HANDLER (MR):

IT IS RESPONSIBLE FOR THE ESTABLISHMENT AND BREAKING OFF OF THE COMMUNICATIONS.

7. SUBSCRIBER AND ANALYSIS DATABASE MANAGER(TR) TRANSLATOR:

IT CARRIES OUT MANAGEMENT OF THE ANALYSIS, SUBSCRIBER AND CIRCUITS GROUPS DATABASE . THE TR SUPPLIES THE CALL HANDLER, ON REQUEST FROM IT, WITH SUBSCRIBER AND CIRCUIT CHARACTERISTICS NECESSARY FOR ESTABLISHING AND BREAKING OFF COMMUNICATIONS.

8. CALL CHARGING AND TRAFFIC MEASUREMENT (TX):

THE TX FUNCTION CARRIES OUT CHARGING FOR COMMUNICATION. IT IS RESPONSIBLE FOR CALCULATING THE AMOUNT TO BE CHARGED FOR EACH COMMUNICATION.

9. MATRIX SYSTEM HANDLER(GX):

IT IS RESPONSIBLE FOR PROCESSING AND FOR DEFENCE OF CONNECTIONS ON RECEIPT OF:

O REQUEST FOR CONNECTION OR DISCONNECTION COMING FROM CALL HANDLER OR MESSAGE DISTRIBUTOR FUNCTION

O CONNECTIONS FAULT SIGNALLED BY THE MATRIX SWITCH CONTROLLER FUNCTION(COM).

10. MESSAGE DISTRIBUTOR (MQ):

THE MQ FUNCTION IS RESPONSIBLE FOR DISTRIBUTION AND FORMATTING OF CERTAIN INTERNAL MESSAGES.

11. COMMUNICATION MULTIPLEX:

1 TO 5 COMMUNICATION MULTIPLEXES ARE USED TO TRANSMIT MESSAGES FROM ONE STATION TO ANOTHER. THIS TRANSFER OF MESSAGES IS CARRIED OUT BY ONLY ONE TYPE OF MEDIUM, THE TOKEN RING, WITH A UNIQUE PROTOCOL WHICH IS PROCESSED IN ACCORDANCE WITH IEEE 802.5 STANDARD.

SINGLE MULTIPLEX(COMPACT CONFIGURATION)

O IT IS THEN REFERRED TO AS THOUGH INTERSTATION MULTIPLEX(MIS).

MORE THAN ONE SPECIALIST MULTIPLEX:

O ONE INTERSTATION MULTIPLEX(MIS) FOR INTERCHANGES BETWEEN THE COMMAND FUNCTIONS, OR BETWEEN THE COMMAND FUNCTIONS AND OPERATION AND MAINTENANCE SOFTWARE,

O FROM 1 TO 4 STATION ACCESS MULTIPLEXES(MASS) FOR INTERCHANGES BETWEEN THE CONNECTION FUNCTIONS(URM,COM,ETA,PUPE) AND THE COMMAND FUNCTIONS.

12. OPERATION AND MAINTENANCE FUNCTION (OM):

THE FUNCTIONS OF THE OPERATION AND MAINTENANCE SUBSYSTEM ARE CARRIED OUT BY THE OPERATION AND MAINTENANCE SOFTWARE(OM).

THE OPERATING AUTHORITY ACCESSES ALL HARDWARE AND SOFTWARE EQUIPMENT OF THE ALCATEL 1000E-10 SYSTEM VIA COMPUTER TERMINALS BELONGING TO THE OPERATION AND MAINTENANCE SUBSYSTEM: MAGNETIC MEDIA, INTELLIGENT TERMINAL.

TRANSLATION MANAGEMENT :

TRANSLATION FUNCTION IS THE PROCESS THAT TRANSFORMS RECEIVED DATA INTO A SET OF REQUIRED DATA IN ORDER TO PROCESS THE CALLS ACCORDING TO THE REQUESTOF THE SUBSCRIBER, AFTER DULY VERIFYING THE AUTHORISATION OF THE SUBSCRIBERS. DATA INPUT TO THE TRANSLATOR MAY BE DIGITS SUPPLIED BY THE SUBSCRIBER OR RECEIVED OVER CIRCUITS OR DATA OBTAINED FROM A PREVIOUS STAGE OF TRANSLATION.

SUBSCRIBER LINES AND CIRCUITS ARE THE SOURCES, FROM WHICH CALLS CAN BE ORIGINATED IN AN EXCHANGE. THE TRANSLATOR MAINTAINS THE INFORMATION IN FORM OF DATABASE. IN CASE OF A CALL ORIGINATING ON A SUBSCRIBER LINE OR JUNCTION A REGISTER OF MR IS SEIZED WHICH RECEIVE THE SPACE ADDRESS OF THE SUBSCRIBER OR CIRCUIT. REGISTER CALLS THE TR TO COLLECT THE CATEGORY INFORMATION ANDCALLER CODES I.E. WHETHER THE CALL IS FROM A SUBSCRIBER LINE OR OVER A JUNCTION ETC WITH REFERENCE TO SPACE ADDRESS. CALLER CODE AND CATEGORY INFORMATION IS REQUIRED DURING SUBSEQUENT STAGES OF TRANSLATION MANAGEMENT.

HARDWARE ARCHITECTURE:

Subscriber Access Subsystem LRCSNL

LRCSND

(CSED) LR

1 TO 4 MAS

AL

SMX

SMT

STS

1 MIS

SMC

SMM

SMA

TMN PC

SMC : MAIN CONTROL STATION

SMA : AUXILLARY EQUIPMENT CONTROL STATION

SMT : TRUNK CONTROL STATION

SMX : MATRIX CONTROL STATION

SMM : MAINTENANCE STATION

STS : SYNCHRONISATION AND TIME BASE STATION

THE SMA INCLUDES ETA, PUPE

THE SMC INCLUDES MR, TX, TR, MQ, GX, PC

THE SMT IS URM

THE SMX IS COM

THE SMM IS OC, OM

SMC:

THE SMCS ARE THE UNIT WHICH HOLD CONTROL OVER FUNCTIONSMR, TR, MQ, PC, GX. THESE UNITS ARE IN SOFTWARE FORM AND ARE DUPLICATED EXCEPT MR. MR CAN BE MORE THAN TWO.SMC CAN BE MINIMUM 2 AND MAXIMUM 32 AS PER DESIGN.

THE MAIN CONTROL STATION IS LINKED TO THE FOLLOWING COMMUNICATION MEDIA:

O THE INTERSTATION MULTIPLEX(MIS) : IT CARRIES OUT INTERCHANGES OF INFORMATION WITH THE OTHER MAIN CONTROL STATIONS AND WITH THE SMM STATION,

O THE MAIN CONTROL STATION ACCESS MULTIPLEXES(MAS) 1 TO 4: THEY CARRY OUT INTERCHANGES OF INFORMATION WITH THE AUXILLARY EQUIPMENT CONTROL(SMA), TRUNK CONTROL STATION(SMT) AND MATRIX CONTROL STATION(SMX) CONNECTED ON THOSE MULTIPLEXES,

O THE ALARM MULTIPLEX(MAL); THIS TRANSMIT POWER ALARMSFROM THE STATION TO THE SMM STATION.

SMA :

THE AUXILLARY EQUIPMENT CONTROL STATION IS CONNECTED TO THE HOST SWITCHING MATRIX BY 8 MATRIX LINKS WHICH CARRY SIGNALING GENERATED OR TO BE ANALYZED.IT IS VIA THE CONNECTION SYSTEM THAT THE AUXILIARY EQUIPMENT CONTROL STATION RECEIVES BASIC TIME DISTRIBUTIONS FROM THE STS, MAS.

SMT :

A TRUNK CONTROL STATION HANDLES 32 PCM LINKS.

SMM :

THE SMM IS THE O&M FUNCTION UNIT AND IS DUPLICATED AS SMMA & SMMB. THIS WORK IN PILOT/STAND BY MODE.

SUBSCRIBER DIGITAL ACCESS UNIT (CSN):

THE DIGITAL SATELLITE CENTRE IS A SUBSCRIBER CONNECTION UNIT ON WHICH BOTH ANALOG AND DIGITAL SUBSCRIBERS CAN BE CONNECTED.THE CSN CAN BE EITHER LOCAL(CSNL) OR DISTANT(CSND) WITH RESPECT TO THE CONNECTING SWITCH.

THE CSN BREAKS DOWN INTO TWO PARTS:

- THE DIGITAL CONTROL UNIT (UCN) AND THE CONCENTRATORS (CN).

THE DIGITAL CONTROL UNIT IS THE PART THAT CAN BE EITHER

LOCAL OR DISTANT WITH RESPECT TO THE CONNECTING SWITCH.

THE CONCENTRATORS, TO WHICH THE SUBSCRIBERS ARE CONNECTED, CAN BE EITHER LOCAL (CNL) OR REMOTE (CNE) WITH RESPECT TO THAT CONTROL UNIT.

THE CSN WAS DESIGNED FOR INTEGRATED SERVICES DIGITAL NETWORK (ISDN).

CSN CONNECTIONS TO THE NETWORK

ANALOGSUBSCRIBERS

DIGITAL SUBSCRIBERS

ANALOGSUBSCRIBERS

DIGITAL SUBSCRIBERS

CSNL

CSND

CONNECTINGSWITCH

2 TO 4 LRI ARE USED TO CONNECT A LOCAL DIGITAL CONCENTRATOR (CNL) TO THE UCN. A MAXIMUM OF 42 LRI LINKS CAN BE USED TO CONNECT THE CONCENTRATORS TO THE CONNECTION NETWORK. A MAXIMUM OF 19 CNL CAN BE CONNECTED TO THE UCN. A MAXIMUM OF 20 CNES CAN BE CONNECTED TO THE UCN.