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Originally Posted by martin
Codecs are negotiated between the 2 end points. So what is happening is your DID provider and your ATA are negotiating on what Codec to use.
If your DID provider only allows g729 then that's what you will end up with. One thing to try, is to update your ATA to only allow g711 and see if the DID accepts this.
VoXaLot is just proxying the INVITE request from the DID and plays no part in the Codec negotiation.
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Another question.
I have two providers, AstraTEL (supplies g711a for off net) and SIPME (supplies g729 for off-net). I've tried a couple of dial plans so that calls can get routed via SIPME or AstraTEL. I would EXPECT that if I routed a call via SIPME I would get the g.729 codec and if I routed a call via AstraTEL I would use the g.711 codec. However, when I tested it I could only get the g.729.
Ideas as to why this did not work?