There are several off the shelf solutions for radio linking over the internet.. Linux based mostly but free software and excellent at what they do..
Radio world protocols are not the best for transporting over low bandwidth (I.E. UDP) based solutions. Between the two radio world solutions ( while I would not really suggest either) ....voting tone as opposed to tone control keying would be a better option as tone control keying is not fault tolerant to line dropouts.. which are inherent in audio streaming .. at least in low bandwidth solutions... Absence of tone on a tone control line during a "ptt" ( or active cor) will cause an unrecoverable drop... In voter tone control.. drops in bits will cause a drop in processed audio.. but will recover as long as voice is present and "random" during any roughly 6 second window. In the later case the tone on the line is only there when rx is NOT.. so worst case false votes during inactive cor ... but not dropouts. Doug At 01:58 PM 6/24/2009, you wrote: >Wondering if anyone has ever linked two Motorola repeaters together >using the Tone Remote Wireline methodology (2175 Guard Tone, >specific function tones, etc) over IP? Normally these links are run >via dedicated microwave links or T1 lines (i.e. on all the time). > >I'm thinking perhaps of using VoIP or simply "media player" style >audio streams where when one machine is active it sends the command >tones and audio to the other one. IRLP or Echolink could be an >external option, but why not use the built-in native interface that >has worked for many years since the connection to the repeater is >fairly simple. > >This would be for region-to-region linking so voter timings, etc >aren't being considered. > >Thanks, >Tony > >
