Problem and question about a failed Session setup

[Mikael Magnusson]

Werner Dittmann wrote:
> Just currently I tried to setup a connection to a friend who uses
> Gizmo and is registered at sipphone.com. We couldn't manage to have
> a simple VoiP connection. I was able to record the session with tcpdump
> and have gathered all the debug outputs of minisip during the setup
> trial.
> 
> The Debug messages are attached as a text file, the tcpdump file
> as well - its just about 30kb. Can some of our SIP / Minisip gurus
> have a look at it?
> 
> Somehow the whole behavior seems quite strange to me. When I look at
> the tcpdump with ethereal I see that Minisip ACK the SIP OK but it
> seems that this isn't recognized by the other side.
> 
> The "strange" SIP number are due to the fact that I do a crossover call
> from FWD to sipphone.com (**747 if the prefix from FWD to sipphone).
> 
> If you have any questions - just drop an e-mail.
> 
> 
> Thanks,
> 
> 

The problem is that Minisip sent the ACK to the contact in the "180 
Ringing" response, but it should have sent it to the contact in the "200 
Ok" response instead.

Try revision 2646, I think it should solve the problem.

Mikael