What are the merits and demerits of GSM?

Answer 1

Advantages of 2G GSM

* GSM is mature; this maturity means a more stable network with robust features.

* Less signal deterioration inside buildings.

* Ability to use repeaters.

* Talktime is generally higher in GSM phones due to the pulse nature of transmission.

* The availability of Subscriber Identity Modules allows users to switch networks and handsets at will.

* GSM covers virtually all parts of the world so international roaming is not a problem.

[edit] Disadvantages of 2G GSM

* Pulse nature of TDMA transmission used in 2G interferes with some electronics, especially certain audio amplifiers. 3G uses W-CDMA now.

* Intellectual property is concentrated among a few industry participants, creating barriers to entry for new entrants and limiting competition among phone manufacturers.

* GSM has a fixed maximum cell site range of 35 km, which is imposed by technical limitations.