GSM

What is a GSM ? : 

What is a GSM ? Global System for Mobile (GSM) is a second generation cellular standard developed to cater voice services and data delivery using digital modulation.

GSM: History: 

GSM: History GSM is developed by Group Special Mobile in 1982 which was an initiative of CEPT ( Conference of European Post and Telecommunication ). It replace the incompatible analog system. Presently the responsibility of GSM standardization resides with special mobile group under ETSI ( European telecommunication Standards Institute ).

Count…….: 

Count……. Full set of specifications phase-I became available in 1990. Under ETSI, GSM is named as “ Global System for Mobile communication “. Today many providers all over the world use GSM (more than 213 countries in Asia, Africa, Europe, Australia, America). More than 1300 million subscribers in world and 83 million subscriber in India.

GSM in World: 

GSM in World

GSM in India: 

GSM in India

GSM Services: 

GSM Services Tele-services Bearer or Data Services Supplementary services

Tele Services : 

Telecommunication services that enable voice communication via mobile phones. Offered services - Mobile telephony - Emergency calling Tele Services

Bearer Services: 

Bearer Services Include various data services for information transfer between GSM and other networks like PSTN, ISDN etc at rates from 300 to 9600 bps. Short Message Service (SMS) up to 160 character alphanumeric data transmission to/from the mobile terminal.

Count….: 

Count…. Group 3 fax Voice mailbox Electronic mail

Supplementary Services: 

Supplementary Services Call related services : Call Waiting- Notification of an incoming call while on the handset. Call Hold- Put a caller on hold to take another call. Call Barring- All calls, outgoing calls, or incoming calls.

Count….: 

Count…. Call Forwarding- Calls can be sent to various numbers defined by the user Multi Party Call Conferencing - Link multiple calls together

GSM Criteria : 

GSM Criteria Good subjective speech quality. Low terminal and service cost. Support for international roaming – one system for all of the world. Ability to support handheld terminals. Support for range of new services and facilities. Enhanced Features. ISDN compatibility. Enhance privacy. Security against fraud.

Advantages of GSM : 

Advantages of GSM Crisper, cleaner quieter calls Security against fraud and eavesdropping International roaming capability in over 100 countries Improved battery life Efficient network design for less expensive system expansion

Count……..: 

Count…….. Efficient use of spectrum. Advanced features such as short messaging and caller ID. A wide variety of handsets and accessories. High stability mobile fax and data at up to 9600 baud. Ease of use with over the air activation, and all account information is held in a smart card which can be moved from handset to handset.

PowerPoint Presentation: 

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