Let's say we are using SEMS in SBC mode and letting the traffic pass through it, so no new call leg is created. An incoming INVITE from the supplier reaches the SBC. The signaling then reaches Kamailio which applies topology hiding and the signaling is sent off to the customer's remote PBX. Media is handled by rtpproxy. The ip addresses in the From/To/CallID/Contact etc will still be that of the endpoint that originated the INVITE right? What does one do in a scenario like this? Use nathelper to rewrite the contact? What about the other IP's? Or should SEMS be configured to create a new call leg? This would solve the issue with the IP's. -----Original Message----- From: sr-users-bounces(a)lists.sip-router.org [mailto:sr-users-bounces@lists.sip-router.org] On Behalf Of Alex Balashov Sent: Wednesday, May 1, 2013 1:16 PM To: Kamailio (SER) - Users Mailing List Subject: Re: [SR-Users] Topoh module also masking Via? It does indeed. On 05/01/2013 06:57 AM, Grant Bagdasarian wrote: -- Alex Balashov - Principal Evariste Systems LLC 235 E Ponce de Leon Ave Suite 106 Decatur, GA 30030 United States Tel: +1-678-954-0670 Web: http://www.evaristesys.com/, http://www.alexbalashov.com/ _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users(a)lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users

On 05/01/2013 08:54 AM, Grant Bagdasarian wrote: It doesn't work like that. SEMS always creates a new call leg. If you are already using SEMS in this manner, you have no need of 'topoh'. -- Alex Balashov - Principal Evariste Systems LLC 235 E Ponce de Leon Ave Suite 106 Decatur, GA 30030 United States Tel: +1-678-954-0670 Web: http://www.evaristesys.com/, http://www.alexbalashov.com/