Motorola A1200 - Manual (Page 115)

113 media applications
send/receive calls with the
radio on
Your phone rings or vibrates as usual to notify
you of an incoming call, message, or other
event. You can answer the call, or ignore the
call and continue listening to the radio.
If you answer the call, tap End as usual to end
the call and resume the FM broadcast.
You don’t have to turn off the radio to make a
call. The radio is muted automatically when
you dial an outgoing call from the phone
keypad.