GSM Architecture details – The Mobile Station

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The MS consists of the physical equipment, such as the radio transceiver, display and digital signal processors, and the SIM card. It provides the air interface to the user in GSM networks. As such, other services are also provided, which include:

  • Voice teleservices
  • Data bearer services
  • The features’ supplementary services

GSM Mobile Station

The MS Functions:

The MS also provides the receptor for SMS messages, enabling the user to toggle between the voice and data use. Moreover, the mobile facilitates access to voice.messaging systems. The MS also provides access to the various data services available in a GSM network. These data services include:

  • X.25 packet switching through a synchronous or asynchronous dialup connection to the PAD at speeds typically at 9.6 Kbps.
  • General Packet Radio Services (GPRSs) using either an X.25. or IP.based data transfer method at speeds up to 115 Kbps
  • High.speed, circuit.switched data at speeds up to 64 Kbps

What is SIM?

The SIM provides personal mobility so that the user can have access to all subscribed services irrespective of both the location of the terminal and the use of a specific terminal. You need to insert the SIM card into another GSM cellular phone to receive calls at that phone, make calls from that phone, or receive other subscribed services.

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Tauseef Emraj Shehan

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