GSM

GSM (Global System for Mobile Communications, originally Groupe Spécial Mobile), is a standard set developed by the European Telecommunications Standards Institute (ETSI) to describe protocols for second generation (2G) digital cellular networks used by mobile phones.

The GSM standard was developed as a replacement for first generation (1G) analog cellular networks, and originally described a digital, circuit switched network optimized for full duplex voice telephony. This was expanded over time to include data communications, first by circuit switched transport, then packet data transport via GPRS (General Packet Radio Services) and EDGE (Enhanced Data rates for GSM Evolution or EGPRS).

Further improvements were made when the 3GPP developed third generation (3G) UMTS standards followed by fourth generation (4G) LTE Advanced standards.

"GSM" is a trademark owned by the GSM Association.

Read more about GSM:  History, Standards Information, GSM Open-source Software

Other articles related to "gsm":

LAPDm
... LAPDm is a data link layer protocol used in GSM cellular networks ... LAPDm allows no more than one outstanding unacknowledged I-frame (GSM 04.06 Sections 5.8.4 and 6) ... LAPDm does not support extended header formats (GSM 04.06 Section 3) ...
List Of Hills In The Lake District - North Western Fells - Braithwaite To Buttermere
... GSM-1 Grasmoor 519 ... NY174203 GSM-2 Crag Hill 117 ... NY192203 GSM-3 Sail 32 ... NY198202 GSM-4 Wandope 30 ... NY188197 GSM-5 Scar Crags 55 ... NY208206 GSM-6 ...
SGSM
... Secure GSM, a wireless product, is based on Global System for Mobile communications (GSM) originally from Groupe Spécial Mobile ... GSM is a standard for mobile phones in the world ... Its promoter, the GSM Association, estimates that 82% of the global mobile market uses the standard ...
Thatha Shamsa - Telephone Networks
... Pakistan Telecommunication Company (PTCL) Pakistan Telenor GSM Paktel GSM Pakistan Mobilink GSM Pakistan Pakistan Warid GSM Company ...
GSM Open-source Software - Issues With Patents and Open Source
... The original GSM implementations from 1991 may now be entirely free of patent encumbrances, however patent freedom is not certain due to the US "first to invent" system that was in place until 2012 ... As of 2011, there have been no law suits against users of OpenBTS over GSM use ...