This is a fair question. The same logic that allows extra codecs in the
answer would suggest it should be ok to include extra media in the answer.
I suppose you could think of it as an oversight.
Paul
George AK wrote:
> Hi,
>
> In 3264, in section 6, it tells
> The answer MUST contain exactly the same number
> of "m=" lines as the offer
>
> But at section,6.1, it tells
> The stream MAY indicate additional media formats, not listed in the
> corresponding stream in the offer, that the answerer is willing to
> send or receive (of course, it will not be able to send them at this
> time, since it was not listed in the offer).
>
> Why it is allowing to add more codecs but not m lines?
> The Caller UA will have confusion in dealing with the codecs also?
>
> -George-
>
> --- On Tue, 12/8/08, Brett Tate <[EMAIL PROTECTED]> wrote:
>
> From: Brett Tate <[EMAIL PROTECTED]>
> Subject: RE: [Sip-implementors] Next SIP Version
> To: [EMAIL PROTECTED], [email protected]
> Date: Tuesday, 12 August, 2008, 10:53 PM
>
>> Is there any works going on to comeup with next
>> version of SIP? That is SIP 3.0
>
> Currently little discussion and motivation for SIP 3.0.
>
> The SIP list (and IETF 72 minutes) reflect some discussion concerning
> potential
> for sip-bis versus continuing with the essential correction process.
>
>
>> Where are we planning to address collectively
>> the most important aspects/issues like
>> Offer-answer, NAT traversal, non-INVITE Timer
>> issues, security recommendations etc?
>
> Those topics are spread across multiple IETF working groups like SIP, BEHAVE,
> and MMUSIC. Related clarifications and requirements are also being discussed
> within SIPPING and BLISS.
>
>
>
> Bollywood news, movie reviews, film trailers and more! Go to
> http://in.movies.yahoo.com/
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