Download - BSNL 5-ESS PRESENTATION
PRESENTED BY:
GAURAV BAJAJ
0616431042
PSIT,KANPUR
INTODUCTION TO COMMUNICATION INTRODUCTION TO BSNL 5-ESS SWITCH REQUIREMENT OF 5-ESS SWITCH ELEMENT OF 5-ESS SWITCH APPLICATION OF SWITCH
COMMUNICATION MEANS SHARING INFORMATION AND RESOURCES.
“TELEPHONE” IS A COMBINATION OF TWO GREEK WORDS “TELE” MEANS “FAR: AND “PHONE” MEANS “VOICE AND SOUND”.
IN 1874 ALEXANDER GRAMBELL INVENTED THE PRINCIPLE OF TELEPHONE.
“MR. WATSON COME HERE”.
NOW TODAY, TELECOMMUNICATION HAVE CROSSED ALL BOUNDARIES, WITH MOBILE AND SATELLITE TECHNOLOGIES.
IT HAS 47 MILLION ACCESS LINE ACROSS INDIA.
IT OFFER FOLLOWING SERVICES IN INDIA.
LANDLINES GSM AND CDMA
SERVICES IN WIRELESS
SATELLITE COMMUNICATION
INTERNET TELEGRAPH
IN THIS SERVICE BSNL IS FOR 100 YEARS.
32 THOUSAND ELECTRONIC EXCHANGE.
326 DIGITAL TRUNK AUTOMATIC EXCHANGES(TAX),DIGITAL PULIC SWITCH TELEPHONE NETWORK(PSTN).
TELEPHONE NETWORK INTERLINK 2.4LAKHS KMS. OF OPTICAL FIBRE.
OUTDOOR NETWORK1.MAIN DISTRIBUTION FRAME(MDF)2.DISTRIBUTION FRAME(DP)3.PILLAR TRANSMISSION LINE1. SUBSCRIBER T0 EXCHANGE (LOCAL EXCHANGE)2. EXCHANGE TO EXCHANGE(TANDEM EXCHANGE) INDOOR NETWORK1.SWITCHING SYSTEM2.MODULATIN PROCESS
EWSD OF SIEMEN(GERMANY).
AXE OF ERICSSON(SWEDEN).
CHENNAI FETEX(JAPAN).
OCB OF ATCATEL(FRANCE).
5ESS OF AT&T(USA)
SYSTEM X3 OF GDT(UK).
NEAX OF NEX(JAPAN)
IT IS DIGITAL EXCHANGE THAT SERVE AS
A LOCAL,TOLL,TANDEM AND OSPS.
IT CAN SERVE 100 TO I.0 LAKH
SUBCRIBERS
IT IS HIGHLY RELIABLE.
IT’S MAIN ADVANTAGE IS THAT IT CAN BE
CONTROLLED BY ANY METRO LOCATION
Some part it is great technology
Today, we need this technology
ANALOG SYSTEM translating it into electronic
pulses. It's not that complicated a
concept it's fairly inexpensive to use. Distortion may occur at
receiving end It does not provide multiple
services over a single channel
Analog gives better quality
DIGITAL SYSTEMrepresented by a series of "1"s
and "0"s.
The process is complicated.
It is expensive.
distortion-free data received at the end
It provide multiple services over common channel.
Digital give better quality but less than analog
IT PERFORM 95% OF THE CALL PROCESSING AND MAINTANENCE FUNTION.
LINE AND TRUNK SCANNING TONE GENERATION DIGITAL ANALYSIS CALL ROUTING CIRCUIT AND PACKET SWITCHING ANNOUCEMENT ROUTINE MAINTANENCE1. CALL WAITING2. ABBREVAITION DAILLING3. CALL DIVERSION4. CONFERENCE CALL
MSCS: MSCU (message
switch control unit)-provides control over the MSPU.
MSPU (message switch peripheral unit)- Processes control time slot.
ONTC: CMCU
(communications module control unit)- Provides timing and control.
TMSU (time multiplexed switch unit)- terminates NCT links and switches data and control time slots between them.
AM FUNCTION: *Administrative
data processing *Traffic
Measurement – System performance report
*Memory Management
*System Maintenance
*Allocating trunks for call processing.
STEP INVOLVE IN CALL PROCESSING
Origination Digit analysis Routing/
Screening Charging Termination