| AMPS: Call
Initiation |
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| – | user
enters number and presses SEND |
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| – | phone
sends number to be called and own identity on |
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| access
channel (random access channel), retry in case |
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| of
collision |
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| – | MTSO
looks for idle channel (if caller is customer of |
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| MTSO’s
company or one of its partners) and sends |
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| back
channel number on the control channel |
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| – | mobile
phone switches to the selected voice channel |
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| and
waits until the called party picks up the phone |
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