What is GSM?
GSM (Global System for Mobile communications) is an open, digital cellular technology used for transmitting mobile voice and data services.
What does GSM offer?
GSM supports voice calls and data transfer speeds of up to 9.6 kbps, together with the transmission of SMS (Short Message Service).
GSM operates in the 900MHz and 1800MHz bands in Europe and the 1900MHz and 850MHz bands in the US. GSM services are also transmitted via 850MHz spectrum in Australia, Canada and many Latin American countries. The use of harmonised spectrum across most of the globe, combined with GSM’s international roaming capability, allows travellers to access the same mobile services at home and abroad. GSM enables individuals to be reached via the same mobile number in up to 219 countries.
Terrestrial GSM networks now cover more than 90% of the world’s population. GSM satellite roaming has also extended service access to areas where terrestrial coverage is not available.
In India GSM operates in 900MHz and 1800MHz Band and 1900MHz band are reserve for Military purpose.
900MHz Bandwidth is 25MHz, Channel Bandwidth is 200KHz, & ARFCN is 125
1800MHz Bandwidth is 75MHz, Channel Bandwidth is 200KHz, & ARFCN is 374.
900MHz Bandwidth is 25MHz, Channel Bandwidth is 200KHz, & ARFCN is 125
1800MHz Bandwidth is 75MHz, Channel Bandwidth is 200KHz, & ARFCN is 374.