>>> "[email protected]" <[email protected]> 01/17/11 12:53 PM >>> >>Yes, device to device (remote to remote). As the phones we are using don't >>have transcoding capabilities, setting them to >>prefer g.729, calling >>another remote with g.729 still doesn't compress the data.
I'm not sure what you mean by "still doesn't compress the data"? If you set 2 remote endpoints that prefer the G.729 codec, then when they call each other, the G.729 codec will be used which is a compressed codec. The phones do not have to transcode anything. Transcoding is when your changing one codec to another. But when two endpoints both speak the same codec it is not transcoded. Most endpoints have a priority list for codecs and it negotiates with the other endpoint from the top down. So if both support G.729 that will be used first. If not then it will try the next codec like G.711u. That is what would happen when leaving a voicemail, the endpoint would try G.729...and then use G.711u which freeswitch supports. All of that is transparent. In 4.4 freeswitch will have the G.729 codec and negotiate it without trying to use the larger G.711u -M
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