I have used G729 and it sounds almost as good as G711U. The problem is
the way Asterisk uses it. It does not sound robotic and it's not suppose
to sound that way. Most Carriers want the calls to be in g711u so
thats why I use G711u otherwise I want to save money on bandwidth. G729
on Asterisk adds latency. this could be one of your problems. Also you
will not get music on hold to play well with G729.
Andrew Kohlsmith wrote:
On May 27, 2005 06:12 am, chawki hammoud wrote:
I installed G729 from Diguim and I was expecting the
sound quality on my i686 machine to be better than
gsm. Compared to gsm, G729 sounds closer and a little
robotic. Is this what is supposed to be or am I
missing something?
It sounded more or less the same to me, perhaps with GSM being a little more
human (I can easily listen to music on hold with GSM).
I am interested in G729 because the internet in my
country is very expensive and I want to save every bit
possible. I want to use G729 because it takes less
bandwidth for each additional call between two IAX
servers than other codecs.
Make sure you use IAX2 trunking then. It can give you very large bandwidth
savings when you have multiple audio streams between two servers since the
UDP overhead is not repeated for every call.
-A.
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