GSM

GSM

GSM Global System for Mobile Communication

( ).

• Capacity • Compatibility • Cost • Quality• Security

Digital Vs Analog

GSM

• The Mobile Station (MS). • The Base Station Subsystem (BSS).

• The Network and Switching Subsystem (NSS).

• The Operation and Support Subsystem (OSS).

• :-1.

2. sim card

Base Station Subsystem BSS

1.Base Transceiver Station BTS.2.Base Station Controler BSC3.Transcoding and Rate Adaptation Unit

TRAU

Base Station Subsystem BSS

Base Station Controler BSC

Base Station Controler BSC

Base Station Controler BSC

The Mobile service Switching Center MSC

MSC

HLR Home Location Register

Visitor Location Register VLR

AUC

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