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.
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