On 3/30/2011 3:33 AM, Jyoti Singhal wrote:
> Hi All,
>
> In case if we have received 200 OK to an INVITE request, now due to same
> failure at proxy, proxy wants to end the call --- What should be the
> scenario?
Your case below isn't clear. I presume there is a "proxy" in the middle
that isn't shown. What led to the 4xx response after receiving a 2xx
response? (That isn't normal proxy behavior.) From above, you suggest
some proxy failure. If so, sw or hw?
> Case 1:
>
> INV ---------------------------------------------------> INV
> <------------------------ 200
> 4xx<-----------------------
> -------------------------> ACK
> -------------------------> BYE
>
> Just wanted to confirm how important is to send an ACK in such situation.
> Can a graceful termination of call by sending a BYE after receiving 200 OK
> is acceptable?
ACK is always required, except in cases where the communication path has
failed.
Proxies in a dialog are not allowed to originate a BYE in the dialog.
I expect I don't really get your use case. If you can explain it better
it may be possible to give you a better answer.
Thanks,
Paul
> With Regards,
> Jyoti
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