"Christer Holmberg" <christer.holmberg@xxxxxxxxxxxx> 写于 2009-04-09 14:26:21:
>
> I would need to double check exactly what was agreed when.
>
[Gao] :)
> At least we decided during an IETF meeting that it should be allowed
> to reject a PRACK SDP offer using a 4xx response. I think we then
> later on the list realized that a PRACK can be rejected for other
> reasons also.
>
[Gao] If UAC(of PRACK) is introspective enough(deducing from the *MUST* 2xx of UAS), I think there would be very infrequence of 4xx.
I still think it is not obligatory modification, but a choice.
And if someone find a case, in which we MUST using PRACK to do something rejectable, then it is a obligatory modification of RFC3262.
> Of course we can change previously made agreements (we have done
> that before - for good and bad), but I think we should have good
> reasons to do so.
>
> Regards,
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