[Serusers] HELP: Why does my BYE go to the wrong port?

Hi All. I'm using ser-0.9 with a Cisco 5300 for PSTN access. When I call SIP->PSTN and hang up (from either the SIP phone or PSTN phone) that the call is torn down properly and, if the BYE message is from the SIP phone hanging up the BYE makes it to the 5300 on port 5060. But when I call from the PSTN->SIP phone, and hang up the SIP phone, the BYE message seems to be sent to the wrong port on the 5300. Here is a complete SIP conversation where I have hung up the SIP phone and the final BYE message was never received at the 5300 because it should have gone to port 5060. Can anyone help? Regards, Paul U 2005/03/07 15:54:21.245525 10.3.0.3:57687 -> 10.3.0.221:5060 INVITE sip:3215591422@10.3.0.221:5060 SIP/2.0. Via: SIP/2.0/UDP 10.3.0.3:5060. From: <sip:4073192279@10.3.0.3>;tag=86D7FE3C-A26. To: <sip:3215591422@10.3.0.221>. Date: Mon, 07 Mar 2005 20:54:46 GMT. Call-ID: F92183D5-8E8111D9-86D9CF96-15074D2C(a)10.3.0.3. Supported: timer,100rel. Min-SE: 120. Cisco-Guid: 4179523188-2390823385-2262224790-352800044. User-Agent: Cisco-SIPGateway/IOS-12.x. Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO. CSeq: 101 INVITE. Max-Forwards: 6. Remote-Party-ID: <sip:4073192279@10.3.0.3>;party=calling;screen=yes;privacy=off. Timestamp: 1110228886. Contact: <sip:4073192279@10.3.0.3:5060>. Expires: 180. Allow-Events: telephone-event. Content-Type: application/sdp. Content-Length: 252. . v=0. o=CiscoSystemsSIP-GW-UserAgent 9481 9806 IN IP4 10.3.0.3. s=SIP Call. c=IN IP4 10.3.0.3. t=0 0. m=audio 18582 RTP/AVP 18 19. c=IN IP4 10.3.0.3. a=rtpmap:18 G729/8000. a=fmtp:18 annexb=yes. a=rtpmap:19 CN/8000. a=ptime:20. a=qos:optional sendrecv. # U 2005/03/07 15:54:21.258052 10.3.0.221:5060 -> 66.90.46.29:5060 INVITE sip:3215591422@192.168.0.83;user=phone SIP/2.0. Record-Route: <sip:10.3.0.221;ftag=86D7FE3C-A26;lr>. Via: SIP/2.0/UDP 10.3.0.221;branch=z9hG4bKbd16.fe09e763.0. Via: SIP/2.0/UDP 10.3.0.3:5060;rport=57687. From: <sip:4073192279@10.3.0.3>;tag=86D7FE3C-A26. To: <sip:3215591422@10.3.0.221>. Date: Mon, 07 Mar 2005 20:54:46 GMT. Call-ID: F92183D5-8E8111D9-86D9CF96-15074D2C(a)10.3.0.3. Supported: timer,100rel. Min-SE: 120. Cisco-Guid: 4179523188-2390823385-2262224790-352800044. User-Agent: Cisco-SIPGateway/IOS-12.x. Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO. CSeq: 101 INVITE. Max-Forwards: 5. Remote-Party-ID: <sip:4073192279@10.3.0.3>;party=calling;screen=yes;privacy=off. Timestamp: 1110228886. Contact: <sip:4073192279@10.3.0.3:57687>. Expires: 180. Allow-Events: telephone-event. Content-Type: application/sdp. Content-Length: 256. . v=0. o=CiscoSystemsSIP-GW-UserAgent 9481 9806 IN IP4 10.3.0.3. s=SIP Call. c=IN IP4 10.3.0.221. t=0 0. m=audio 35448 RTP/AVP 18 19. c=IN IP4 10.3.0.221. a=rtpmap:18 G729/8000. a=fmtp:18 annexb=yes. a=rtpmap:19 CN/8000. a=ptime:20. a=qos:optional sendrecv. # U 2005/03/07 15:54:21.259071 10.3.0.221:5060 -> 10.3.0.3:57687 SIP/2.0 100 trying -- your call is important to us. Via: SIP/2.0/UDP 10.3.0.3:5060;rport=57687. From: <sip:4073192279@10.3.0.3>;tag=86D7FE3C-A26. To: <sip:3215591422@10.3.0.221>. Call-ID: F92183D5-8E8111D9-86D9CF96-15074D2C(a)10.3.0.3. CSeq: 101 INVITE. Content-Length: 0. . # U 2005/03/07 15:54:21.293701 66.90.46.29:5060 -> 10.3.0.221:5060 SIP/2.0 100 trying. Via: SIP/2.0/UDP 10.3.0.221;branch=z9hG4bKbd16.fe09e763.0. Via: SIP/2.0/UDP 10.3.0.3:5060;rport=57687. From: <sip:4073192279@10.3.0.3:5060>;tag=86D7FE3C-A26. To: <sip:3215591422@10.3.0.221>. Call-ID: F92183D5-8E8111D9-86D9CF96-15074D2C(a)10.3.0.3. CSeq: 101 INVITE. User-Agent: Grandstream BT100 1.0.5.11. Content-Length: 0. . # U 2005/03/07 15:54:21.300280 66.90.46.29:5060 -> 10.3.0.221:5060 SIP/2.0 180 ringing. Via: SIP/2.0/UDP 10.3.0.221;branch=z9hG4bKbd16.fe09e763.0. Via: SIP/2.0/UDP 10.3.0.3:5060;rport=57687. Record-Route: <sip:10.3.0.221;ftag=86D7FE3C-A26;lr>. From: <sip:4073192279@10.3.0.3:5060>;tag=86D7FE3C-A26. To: <sip:3215591422@10.3.0.221>;tag=ad3f03cb59e9e2ce. Call-ID: F92183D5-8E8111D9-86D9CF96-15074D2C(a)10.3.0.3. CSeq: 101 INVITE. User-Agent: Grandstream BT100 1.0.5.11. Content-Length: 0. . # U 2005/03/07 15:54:21.300654 10.3.0.221:5060 -> 10.3.0.3:57687 SIP/2.0 180 ringing. Via: SIP/2.0/UDP 10.3.0.3:5060;rport=57687. Record-Route: <sip:10.3.0.221;ftag=86D7FE3C-A26;lr>. From: <sip:4073192279@10.3.0.3:5060>;tag=86D7FE3C-A26. To: <sip:3215591422@10.3.0.221>;tag=ad3f03cb59e9e2ce. Call-ID: F92183D5-8E8111D9-86D9CF96-15074D2C(a)10.3.0.3. CSeq: 101 INVITE. User-Agent: Grandstream BT100 1.0.5.11. Content-Length: 0. . # U 2005/03/07 15:54:23.016939 66.90.46.29:5060 -> 10.3.0.221:5060 SIP/2.0 200 OK. Via: SIP/2.0/UDP 10.3.0.221;branch=z9hG4bKbd16.fe09e763.0. Via: SIP/2.0/UDP 10.3.0.3:5060;rport=57687. Record-Route: <sip:10.3.0.221;ftag=86D7FE3C-A26;lr>. From: <sip:4073192279@10.3.0.3:5060>;tag=86D7FE3C-A26. To: <sip:3215591422@10.3.0.221>;tag=ad3f03cb59e9e2ce. Call-ID: F92183D5-8E8111D9-86D9CF96-15074D2C(a)10.3.0.3. CSeq: 101 INVITE. User-Agent: Grandstream BT100 1.0.5.11. Contact: <sip:3215591422@192.168.0.83;user=phone>. Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE. Content-Type: application/sdp. Content-Length: 151. . v=0. o=3215591422 8000 8000 IN IP4 192.168.0.83. s=SIP Call. c=IN IP4 192.168.0.83. t=0 0. m=audio 5004 RTP/AVP 18. a=rtpmap:18 G729/8000. a=ptime:20. # U 2005/03/07 15:54:23.019485 10.3.0.221:5060 -> 10.3.0.3:57687 SIP/2.0 200 OK. Via: SIP/2.0/UDP 10.3.0.3:5060;rport=57687. Record-Route: <sip:10.3.0.221;ftag=86D7FE3C-A26;lr>. From: <sip:4073192279@10.3.0.3:5060>;tag=86D7FE3C-A26. To: <sip:3215591422@10.3.0.221>;tag=ad3f03cb59e9e2ce. Call-ID: F92183D5-8E8111D9-86D9CF96-15074D2C(a)10.3.0.3. CSeq: 101 INVITE. User-Agent: Grandstream BT100 1.0.5.11. Contact: <sip:3215591422@66.90.46.29:5060;user=phone>. Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE. Content-Type: application/sdp. Content-Length: 150. . v=0. o=3215591422 8000 8000 IN IP4 192.168.0.83. s=SIP Call. c=IN IP4 10.3.0.221. t=0 0. m=audio 35448 RTP/AVP 18. a=rtpmap:18 G729/8000. a=ptime:20. # U 2005/03/07 15:54:23.032512 10.3.0.3:57307 -> 10.3.0.221:5060 ACK sip:10.3.0.221:5060;ftag=86D7FE3C-A26;lr SIP/2.0. Via: SIP/2.0/UDP 10.3.0.3:5060. From: <sip:4073192279@10.3.0.3>;tag=86D7FE3C-A26. To: <sip:3215591422@10.3.0.221>;tag=ad3f03cb59e9e2ce. Date: Mon, 07 Mar 2005 20:54:46 GMT. Call-ID: F92183D5-8E8111D9-86D9CF96-15074D2C(a)10.3.0.3. Route: <sip:3215591422@66.90.46.29:5060;user=phone>. Max-Forwards: 6. Content-Length: 0. CSeq: 101 ACK. . # U 2005/03/07 15:54:23.032936 10.3.0.221:5060 -> 66.90.46.29:5060 ACK sip:3215591422@66.90.46.29:5060;user=phone SIP/2.0. Record-Route: <sip:10.3.0.221;ftag=86D7FE3C-A26;lr>. Via: SIP/2.0/UDP 10.3.0.221;branch=0. Via: SIP/2.0/UDP 10.3.0.3:5060. From: <sip:4073192279@10.3.0.3>;tag=86D7FE3C-A26. To: <sip:3215591422@10.3.0.221>;tag=ad3f03cb59e9e2ce. Date: Mon, 07 Mar 2005 20:54:46 GMT. Call-ID: F92183D5-8E8111D9-86D9CF96-15074D2C(a)10.3.0.3. Max-Forwards: 5. Content-Length: 0. CSeq: 101 ACK. . ## U 2005/03/07 15:54:29.613662 66.90.46.29:5060 -> 10.3.0.221:5060 BYE sip:4073192279@10.3.0.3:57687 SIP/2.0. Via: SIP/2.0/UDP 192.168.0.83;branch=z9hG4bKec7db34a51e476eb. Route: <sip:10.3.0.221;ftag=86D7FE3C-A26;lr>. From: <sip:3215591422@10.3.0.221>;tag=ad3f03cb59e9e2ce. To: <sip:4073192279@10.3.0.3:5060>;tag=86D7FE3C-A26. Contact: <sip:3215591422@192.168.0.83;user=phone>. Call-ID: F92183D5-8E8111D9-86D9CF96-15074D2C(a)10.3.0.3. CSeq: 38096 BYE. User-Agent: Grandstream BT100 1.0.5.11. Max-Forwards: 70. Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE. Content-Length: 0. . # U 2005/03/07 15:54:29.615293 10.3.0.221:5060 -> 10.3.0.3:57687 BYE sip:4073192279@10.3.0.3:57687 SIP/2.0. Record-Route: <sip:10.3.0.221;ftag=ad3f03cb59e9e2ce;lr>. Via: SIP/2.0/UDP 10.3.0.221;branch=z9hG4bK1c0d.f4b128f.0. Via: SIP/2.0/UDP 192.168.0.83;received=66.90.46.29;branch=z9hG4bKec7db34a51e476eb. From: <sip:3215591422@10.3.0.221>;tag=ad3f03cb59e9e2ce. To: <sip:4073192279@10.3.0.3:5060>;tag=86D7FE3C-A26. Contact: <sip:3215591422@192.168.0.83;user=phone>. Call-ID: F92183D5-8E8111D9-86D9CF96-15074D2C(a)10.3.0.3. CSeq: 38096 BYE. User-Agent: Grandstream BT100 1.0.5.11. Max-Forwards: 16. Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE. Content-Length: 0. .