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

Developed by Group Spéciale Mobile (founded 1982) which was an initiative of CEPT ( Conference of European Post and Telecommunication )

• Aim : to replace the incompatible analog system

• Presently the responsibility of GSM standardization resides with special mobile group under ETSI ( European telecommunication Standards Institute )

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 135

countries in Asia, Africa, Europe, Australia, America)

• More than 1300 million subscribers in world and 45 million subscriber in India.

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

Developed by Group Spéciale Mobile (founded 1982) which was an　　initiative of CEPT ( Conference of European Post and Telecommunication )

•　Aim : to replace the incompatible analog system

•　Presently the responsibility of GSM standardization resides with special mobile group under ETSI ( European telecommunication Standards Institute )

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 135

　 countries in Asia, Africa, Europe, Australia, America)

•　More than 1300 million subscribers in world and　45 million subscriber in India.