GSM (Global System for Mobile communications) is a digital cellular network developed to provide improved spectrum efficiency, international roaming, and compatibility with other networks. It uses TDMA to allow multiple users to access the same radio frequency channel at different time slots. The GSM architecture consists of mobile stations, a base station subsystem including base transceiver stations and base station controllers, and a network subsystem including mobile switching centers and databases like the home location register.

2. PRESENTATION CONTEMPORARY STUDENTS NAME: AZIZ ZOAIB ID: FA06-BS-0013 COURSE: SWITCHING THEORY TOPIC: GSM ARCHITECTURE

12. FDD/ TDD

28. GSM IS A HALF DUPLEX

32. GSM CHANNELS