Dear all, I have build everything and when I try to make a call I have next issue: 15:00:57.715 pjsua_app.c Call 0 state changed to CONFIRMED 15:00:58.142 pjsua_core.c RX 703 bytes Response msg 200/INVITE/cseq=26565 (r data01EE3DFC) from UDP 94.226.xx.xx:5060: SIP/2.0 200 OK Via: SIP/2.0/UDP 43.221.xx.xx:5060;rport=25374;branch=z9hG4bKPjc7a54adc577d450a aa86f20337584db3;received=80.88.xx.xx From: <sip:43.221.58.101>;tag=3123192d0a074f2583408a743786f186 To: <sip:busxxx.dyndns.org>;tag=1276067530 Call-ID: 14355d97ec13428d9b8b5228b2bd963c CSeq: 26565 INVITE Contact: <sip:32233 at 192.168.0.103:5060> Supported: replaces Allow: INVITE, ACK, CANCEL, BYE, OPTIONS, INFO, REFER, SUBSCRIBE, NOTIFY Content-Type: application/sdp Content-Length: 201 v=0 o=32233 5004 171 IN IP4 192.168.0.103 s=- c=IN IP4 192.168.0.103 t=0 0 m=audio 5004 RTP/AVP 18 101 a=rtpmap:18 G729/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=sendrecv --end msg-- 15:00:58.161 pjsua_core.c TX 345 bytes Request msg ACK/cseq=26565 (tdta01F3C 228) to UDP 192.168.0.103:5060: ACK sip:32233 at 192.168.0.103:5060 SIP/2.0 Via: SIP/2.0/UDP 43.221.xx.xx:5060;rport;branch=z9hG4bKPj62b99c74233f40988be1a8 f33a256074 Max-Forwards: 70 From: <sip:43.221.xx.xx>;tag=3123192d0a074f2583408a743786f186 To: sip:busxxx.dyndns.org;tag=1276067530 Call-ID: 14355d97ec13428d9b8b5228b2bd963c CSeq: 26565 ACK Content-Length: 0 Any idea why after receiving from 94.226.xx.xx:5060 15:00:58.142 pjsua_core.c RX 703 bytes Response msg 200/INVITE/cseq=26565 (r data01EE3DFC) from UDP 94.226.xx.xx:5060: we reply to 192.168.0.103:5060 15:00:58.161 pjsua_core.c TX 345 bytes Request msg ACK/cseq=26565 (tdta01F3C 228) to UDP 192.168.0.103:5060: ???? Is there any define to force reply to the same address? Who parsed this response and change IP? -- Slava.