Markus,
Did you see this response to the below query already posted to
Implementors.
<snip>
I understand that RFC2327 states that SDP attributes that are not
understood MUST be ignored. So in your example below -
If the UAC makes an offer with a=sendonly then a UAS (non-compliant
to 3264) would ignore this attribute. I would expect that the negotiation
would proceed but any codec selected would be considered bi-directional.
The UAC would be able to determine this by the absence of a=recvonly
in the answer. It could then reINVITE with the old method of indicating
held with the all 0 contact in SDP.
</snip>
Regards - Wayne.
"Markus Hofmann"
<[EMAIL PROTECTED]> To:
"Wainwright, John" <[EMAIL PROTECTED]>,
Sent by:
[email protected]
[EMAIL PROTECTED] cc:
olumbia.edu Subject: Re:
[Sip-implementors] Call Hold
09/05/05 08:35 PM
Hi John,
that's a really good question and I didn't find any answers in the RFCs.
My option is that you must stop the RTP Session if you have a conncetion.
The user wants to hold the conncection and he wouldn't understand why the
hold was not successful.
Greeting
Markus
"Wainwright, John" <[EMAIL PROTECTED]> schrieb am 05.05.05
20:47:21:
>
> If I use "a=sendonly" in the INVITE message when putting a call on hold
what
> response should I expect back if the endpoint does not support this
> attribute ?
>
> Do I still get the 200OK and determine the attribute is not supported by
the
> absence of the "a=recvonly" attribute implying I need to fall back to
using
> "C=0.0.0.0"
>
> Thanks
> John
>
> _______________________________________________
> Sip-implementors mailing list
> [email protected]
> http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
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