APCO 16 Compliance
Some trunked systems queue calls if a user's attempt to transmit gets a busy signal. In other words, if someone presses their push-to-talk button and all trunked radio system channels are busy, some systems will wait-list users in the same order as their busy signals occur. When a channel becomes available, the system notifies the user. There is disagreement about MultiNet's ability to queue calls when all channels are busy. Usually, the control channel is the path allowing wait-listed users to get in line. One publication says MultiNet communicates using low baud rate data multiplexed under voice if all channels are busy. One report says MultiNet users on a live system who got a busy had to either hold their push-to-talk button down continually until the system assigned them a channel or periodically check for an available channel by repeatedly pressing the push-to-talk.
Read more about this topic: LTR Multi Net
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