Hello, I am trying to use PJSIP with the python wrapper to connect two endpoints over a VPN connection. The problem I have is, that the RTP address is always wrong. The devices are IP multi-homed and I want them to use the VPN IP address to communicate. The setup looks like this: Internet <-- 10.100.100.125 |DEV-A| 192.168.9.100 | || VPN Internet <-- 12.120.100.115 |DEV-B| 192.168.9.1 I have configured the transport on both sides to use 192.168.9.100 (or 192.168.9.1) and the SIP connection is established successfully. But the RTP is always trying to transfer via the public IP address 10.100.100.125. Is there any way to change that? Any help would be great. Thanks, Jens Here is the log: 20:11:07.502 pjsua_core.c SIP UDP socket reachable at 192.168.9.100:5060 20:11:07.503 udp0x1c7e2f8 SIP UDP transport started, published address is 192.168.9.100:5060 20:11:13.027 pjsua_call.c Making call with acc #0 to sip:192.168.9.1 20:11:13.029 pjsua_media.c .Call 0: initializing media.. 20:11:13.031 pjsua_media.c ..RTP socket reachable at 10.100.100.125:4000 20:11:13.032 pjsua_media.c ..RTCP socket reachable at 10.100.100.125:4001 20:11:13.032 pjsua_media.c ..Media index 0 selected for audio call 0 20:11:13.034 pjsua_core.c ....TX 1078 bytes Request msg INVITE/cseq=3573 (tdt a0x1c89f30) to UDP 192.168.9.1:5060: INVITE sip:192.168.9.1 SIP/2.0 Via: SIP/2.0/UDP 192.168.9.100:5060;rport;branch=z9hG4bKPjf1097871-0cc3-46e1-ab6d-a8281ac73e9c Max-Forwards: 70 From: sip:user@xxxxxxxxx;tag=7c44c94f-40b1-4ea7-88d8-56dd071aabae To: sip:192.168.9.1 Contact: <sip:user at 192.168.9.100:5060;ob> Call-ID: 055e908a-b200-4a2e-b425-0d3845b14b49 CSeq: 3573 INVITE Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, INFO, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS Supported: replaces, 100rel, timer, norefersub Session-Expires: 1800 Min-SE: 90 User-Agent: pjsip python Content-Type: application/sdp Content-Length: 476
