comments inline...

On Tue, Apr 10, 2012 at 8:56 PM, Iñaki Baz Castillo <[email protected]> wrote:

> 2012/4/10 Shanbhag, Somesh (NSN - IN/Bangalore) <[email protected]>:
>
> 1)  IN-DIALOG-1 = INVITE,  IN-DIALOG-2 = BYE
> > (1) Yes, Definitely BYE has higher precedence and should be honored.
>
> Makes sense.
>
>
>
> 2)  IN-DIALOG-1 = INVITE,  IN-DIALOG-2 = INVITE
> > (2) 491 Request Pending should be sent.
>
> Why? RFC 3261 section 14.2 states that 491 is sent by a UAS that has
> received an in-dialog request while a previous in-dialog request sent
> *by him* has got no final response yet. It's not the same scenario.
>

[ABN] Generally 491 is meant for INVITE cross-over scenario, where INVITE
requests are initiated by UAs in either directions. But for the scenario
you have mentioned earlier, 491 is most suitable reply for the 2nd INVITE
request.


>
>
> 3)  IN-DIALOG-1 = INVITE,  IN-DIALOG-2 = OPTIONS
> > (3) OPTIONS, it depends. UAS can reply with its capabilities right away.
>
>
>
>
> --
> Iñaki Baz Castillo
> <[email protected]>
>
> _______________________________________________
> Sip-implementors mailing list
> [email protected]
> https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
>



-- 
Thanks,
Nataraju A.B.
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