GSM

Global System for Mobile Communication.

GSM is the dominant
2G digital mobile phone standard for most of the world. It determines
the way in which mobile phones communicate with the land-based network
of towers.

GSM is one of two major mobile phone technologies in
the U.S. The other is CDMA. Cingular and T-Mobile use GSM. Sprint and
Verizon use CDMA. GSM is more prevalent in most other parts of the
world, and especially in Europe.

Although GSM and CDMA provide
similar basic features and services to end-users, (such as voice
calling, text messaging, and data services,) they operate very
differently at many technical levels. This makes GSM phones completely
incompatible with CDMA networks, and vice-versa.

The most
visible feature of GSM are SIM cards. SIM cards are removable,
thumbnail-sized smart cards which identify the user on the network, and
can also store information such as phone book entries. SIM cards allows
users to switch phones by simply moving their SIM card from one phone
to the other.

No related posts.