On 20 August 2013 20:16, Steve Davies <steve@connection-telecom.com> wrote:
 
Sorry I didn't write what I meant. But the point was that the OpenSIPs on 41.221.230.60 is not doing any Contact mangling.



Oh <blush>.  I just looked properly and I'm wrong.

Kamailio sends the upstream invite with the Contact still @172.160.230.1.  
The OpenSIPs on 41.221.230.60 rewrites the Contact.

Sorry for talking before checking.

Steve