[Serusers] Need help to better understand transactions

[Martin Hoffmann]

Pauba, Kevin L wrote:
>  
> A client sends and invite to SER that relays it on to a gateway.  In
> this particular scenario, a CANCEL is send by the client after SER
> responds with the 100 trying.  I had thought that SER would match the
> INVITE based on the branch tag and automatically send a CANCEL on to the
> gateway.  Unfortunately, SER cannot find a matching transaction and,
> thus, the GATEWAY never receives a CANCEL..

Very odd. Can you possibly supply a trace of the entire interchange?
They usually help more then debug output.

Regards,
Martin