[SIPForum-discussion] Prefered audio codec
Herve Jourdain
herve.jourdain at mstarsemi.com
Tue Dec 11 09:10:45 UTC 2007
Hi,
For in-band DTMF, I suggest you switch the CODEC before sending the DTMF to
G.711.
But if you really need low-rate codec all the time, and cant do this codec
switch, why not use outband DTMF, using RFC 2833 (or newer)?
Regards,
Herve
_____
From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of Fredrik Sandedal
Sent: mardi 11 décembre 2007 08:50
To: discussion at sipforum.org
Subject: [SIPForum-discussion] Prefered audio codec
Hi,
Could someone give me suggestions on the best audio codec to use when DTMF
is necessary and the bandwidth must be kept on a low rate?
I heard that there could be problems with DTMF and G729AnnexA but I havent
been able to do any advanced test with this.
Regards,
Fredrik Sandedal, Enera
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