[SIPForum-discussion] A and B with G.711

Roni Even ron.even.tlv at gmail.com
Fri May 15 08:11:20 UTC 2009


If the offer and answer had both G.711 and G.729 where G.711 was the first
one in the m line it means that both can be used and G.711 is the preferred,
you can switch the codecs without any signaling.

Roni Even


From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of Underwood, Rosa
Sent: Friday, May 15, 2009 12:42 AM
To: Jyothi Laxmish; discussion at sipforum.org
Subject: Re: [SIPForum-discussion] A and B with G.711




I believe a reINVITE should be used since the change will be during an
established dialog.    RFC 3261 should provide guidance. 



From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of Jyothi Laxmish
Sent: Thursday, May 14, 2009 6:15 AM
To: discussion at sipforum.org
Subject: [SIPForum-discussion] A and B with G.711

Hi all


    Suppose A and B are in conversation stage with g.711 codec.

     A want to change his codec with g.729 ( any other also)   which B
supports. In this

   Scenario how A has to communicate with B  in Sip. Whether UPDATE can be
used? If yes how?







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