We use G.729. Consumes only 35kbps of bandwidth and has a level 4 (from
0 to 5) of voice quality. We still have very poor public data networks
here in Brazil that makes G.711 a very high bandwith consunption codec
for us.
Another point that is good for G.729 is that we can bridge calls from
customers to SIP-terminators (most/all of them uses g729) without the
need to transcode and licence the channels for asterisk (passthrough).
Rgds, Ricardo Martins.
Davis Sylvester III escreveu:
We are evaluating starting a small VoIP consumer based platform.
What is the best codec to use with customers using primarily DSL as
internet connectivity?
I know that g729 is the king-all, but I want to know what the rest of
the professional are using out there. g729 has a cost involved, so
does the cost really offset the performance? Or is it better to go
with g711 to start off?
We plan on using Linksys SPA921 as the primary phone and asterisk open
source as the softswitch. Any information you can pass would be
appreciated.
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