[SIPForum-discussion] ACK was not receiced by B

[Ranjit Avasarala]

how do you know ACK is lost and P did not send ACK to B? also call starts
immediately after sending 200 OK - not after sending ACK.

On Tue, Dec 9, 2014 at 2:44 AM, Subhasish Panda <pandasubhasish at gmail.com>
wrote:

> Please let me know the answer
>
> There are two user-agents (A and B) , one proxy server (P)
>
>
> 1) A sends INVITE        to P
> 2) P forwards INVITE      to B
> 3) B sends  180    to P
> 4) P sends  180    to A
> 5) B sends  200    to P
> 6) P sends  200    to A
> 7) A sends  ACK    to P
> 8) P sends  ACK    to A (when P sends ACK packet to B the packet is lost
> so how the call is going to take place or the transaction or what will
> happend to the session  ?)
>
> --
> Thanks
> Subhasish panda
>
> _______________________________________________
> This is the SIP Forum discussion mailing list
> TO UNSUBSCRIBE, or edit your delivery options, please visit
> http://sipforum.org/mailman/listinfo/discussion
> Post to the list at discussion at sipforum.org
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sipforum.org/pipermail/discussion/attachments/20141210/9ead197d/attachment-0002.html>