Mobile Communication system

GSM is a Global System for mobile communication; it provides Voice, Messaging, Data and Multi Media services .GSM system is an open system, means it contains well defined interfaces between different system parts. GSM is a digital communication system. There are several advantages of GSM. 1. GSM uses radio frequencies efficiently and due to the digital radio path, the system tolerates more intercell disturbances. 2. The average speech quality is better than an analog system. 3. Data transmission is supported throughout the GSM system. 4. Speech is encrypted and subscriber information security is guaranteed. 5. International roaming is possible within all countries using the GSM system.

Pl refer attachment for full article