3. introduction
Incorporated on 15th September 2000.
4th largest mobile telephony provider with more than 60% market share.
Major provider of GSM cellular mobile services under the brand name
“cellone”.
Provides fixed line services and landline using CDMA Technology.
43.74 million line basic telephony capacity.
72.60 million GSM capacity.
37,885 fixed exchange.
12,071 CDMA Towers.
197 Satellite Stations
5. OCB-283
A digital switching system which supports a variety of communication.
ALCATEL of France has developed this system.
First ocb-283 exchange came to India in 1993.
All new technology is based on stored program control (SPC) concept.
6. CDMA
a channel access method used by various radio communication
technologies.
Refers to any several protocols used in 2G and 3G wireless communication.
Uses multiplexing
Ultra high frequency (UHE): 800Mhz and 1.9Ghz.
uses spread spectrum technology.
7. GSM
2nd Generation cellular standard developed to cater voice and data
services.
Provide services like mobile phones, emergency calling, SMS, voicemail
electronic mail etc.
GSM network is made up of three subsystem:
1. mobile station(MS)
2.Base station subsystem (BSS): BSC & BTS
3. Network and switching subsystem
8. ISDN
Designed to mitigate outdated landlines technology to digital
Provides better data speed and higher quality.
Mostly used for telephone communication.
Internet service is an advantage.
Circuit switched telephone network.
Two types of ISDN: BRI & PRI
9. Transmission line
The transmission line is a medium for transmitting electrical energy from
one place to another.
used between transmitter and receiver with the help of “Antenna” .
TYPES :
1.Parallel wire transmission line
2.Coaxial type line
3.Wave guide type cable
Example: optical fiber.
10. Broadband
refers to a signalling method that includes or handles a relatively wide
range of frequencies.
wider the bandwidth, the greater the information-carrying capacity.
High speed Internet Access.
MPLS VPN is a technology.
Bandwidth on Demand.
Video and Audio Conferencing:
11. Conclusion
We came across various technologies like CDMA,GSM,ISDN which is used in
BSNL.
OCB-283 switching exchange system describes how actually we make
calls.
This helped to make the practical knowledge of the theories which I had
studied in our academics.
The discussion was basically done on telecommunication network and how
it works.
