[SIPForum-discussion] Prefered audio codec
Fredrik Sandedal
fredrik.sandedal at enera.se
Tue Dec 11 14:37:42 UTC 2007
Thanks for your information,
It was helpful.
Regards,
Fredrik Sandedal, Enera
________________________________
From: Herve Jourdain [mailto:herve.jourdain at mstarsemi.com]
Sent: Tuesday, December 11, 2007 10:11 AM
To: Fredrik Sandedal; discussion at sipforum.org
Subject: RE: [SIPForum-discussion] Prefered audio codec
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 can't 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 haven't been able to do any advanced test with this.
Regards,
Fredrik Sandedal, Enera
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