Some trunked systems queue calls if a user's attempt to transmit gets a busy signal.
One publication says MultiNet communicates using low baud rate data multiplexed under voice if all channels are busy.
The MultiNet system has some form of central controller in addition to the scan-based radio electronics.
[3] When idle, radios scan all system channels searching for a valid system-and-group call.
Unlike central-controlled trunked systems, LTR MultiNet does not provide a busy queue.
After six years of use, a consultant was hired in May 1994 to evaluate perceived problems with the Police LTR MultiNet radio system.
A committee was convened to review the consultant report and devise a strategy to resolve issues.