Re: sdp missing m line

Sorry about that. I remembered the wrong number.

	Thanks,
	Paul

On 10/1/2010 6:02 PM, Worley, Dale R (Dale) wrote:
> ________________________________________
> From: sip-implementors-bounces <at> lists.cs.columbia.edu
[sip-implementors-bounces <at> lists.cs.columbia.edu] On Behalf Of Paul Kyzivat [pkyzivat <at> cisco.com]
>
> If so, then it has given the UAS few options.
> The UAS can answer with an SDP containing no m-lines, and thus establish
> a connection with no media.
>
> OR, the UAS can return an error, such as 415, if it doesn't want to
> participate in a call with no media.
>
> I think you will find many/most audio UAs will probably return 415 or
> some other error. It would be more forgiving of them to accept the call
> and just treat it as if on hold for whatever media they have.
> _______________________________________________
>
>
> Beware that 415 is not the correct error response for this -- 415 means that the UA cannot understand the
media type of the body of the INVITE (which will be application/sdp).  Response 488 is used to say that the
characteristics of the media described in the SDP body are unacceptable.
>
> Dale
>
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