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and performs the necessary signaling required to
obtain a working channel.
4.
Individual Call - When the signaling is successfully
completed the BUSY flag turns on and the Call
originate tones (three tone alert) sound. Press the
PTT bar and speak directly into the microphone.
Release the PTT bar as soon as you stop talking and
wait for a reply.
Interconnect Call - When the signaling is
successfully completed the BUSY flag turns on and
the proper DTMF tones will be sent and heard at the
speaker. When someone answers, press the PTT
bar and speak directly into the microphone. Release
the PTT bar as soon as you stop talking. Messages
cannot be received when the PTT bar is pressed.
5.
The radio is out of range or the radio is inoperative
when the signaling is unsuccessful, the NO SRVC
will be displayed, and a sequence of five beeps are
heard at the speaker. Any subsequent attempt to
initiate a call within the next 20 seconds will be
ignored.
All channels are busy when the signaling is
unsuccessful and a one second low frequency tone
is heard at the speaker. The call will not be retried
automatically.
