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Sequence of messages during a reception and transmission

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Paul L

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Aug 7, 2007, 11:02:20 AM8/7/07
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I have been given a task at work and I need to understand what happened
during calls from a GSM cell phone: for example, when someone call a cell,
what are the different messages (no need to be too technical about the
different protocols used) transmitted from the tower and the receiver. i.e.:
1)server received notification of an incoming call 2)server locates where
the cell client is 3)nearest tower sends a control message to lient 4)...
etc... everything until the phone rings and the users pushes the "green"
button.
Same thing for transmission from the moment the user pushes the "send"
button
Thanks to the experts.
Paul


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