Subject: RE: [AVT] Dynamic selection of Codec??

From: "Even, Roni" <[email-masked]>
Date: Tue, 27 Mar 2007 16:41:09 +0200

Hi,

If you use SIP read RFC3264 (http://www.ietf.org/rfc/rfc3264.txt)

An Offer/Answer Model with the Session Description Protocol (SDP)

Roni Even

> -----Original Message-----

> From: [email-masked] [mailto:[email-masked]]

> Sent: Tuesday, March 27, 2007 4:36 PM

> To: 'SOLLAUD Aurelien RD-TECH-LAN'

> Cc: [email-masked]

> Subject: RE: [AVT] Dynamic selection of Codec??

> Hi,

>    May I know what is the standard implemented, i.e. is there any rfc
for

> this?

> Or how we need to send a Re-INVITE so as to change the codec
dynamically

> when a call is going on?

> Thanks & regards,

> Vamsi.

> -----Original Message-----

> From: SOLLAUD Aurelien RD-TECH-LAN

> [mailto:[email-masked]]

> Sent: Tuesday, March 27, 2007 7:55 PM

> To: [email-masked]

> Cc: [email-masked]

> Subject: RE: [AVT] Dynamic selection of Codec??

> >    Can we select codec dynamically in the mid session when a

> > SIP call is going on?

> Yes if the caller and callee proposed several common codecs in their

> SDP.

> [Note that some low-end endpoints may not implement this part of the

> standard and may ignore RTP packets with a payload type different from

> the first codec...]

> Otherwise, you need to perform a Re-INVITE to change the codec.

> _______________________________________________

> Audio/Video Transport Working Group

> [email-masked]

> https://www1.ietf.org/mailman/listinfo/avt

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