[SIPForum-discussion] ACK was not receiced by B

[Partha Ray]

I guess you wanted to say P->ACK->B  in point 8) which didn't reached at B.

In this case B will wait for the timeout period to receive ACK (normally 32
secs) and then B will trigger the call termination .
BR,
Partha

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
>
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