[Users] Cisco Gateway Disconnects the call

Hi, Here comes the dump from ngrep for a sample call. Any idea what's wrong? Thanks, Hamid10.30.30.19: Cisco Gateway 10.30.30.18: OpenSER 192.168.11.102: UA # # U 10.30.30.19:5060 -> 10.30.30.18:5060 SIP/2.0 200 OK. Via: SIP/2.0/UDP 10.30.30.18;branch=0,SIP/2.0/UDP 192.168.11.102:5060;branch=z9hG4bK10145. From: 102(a)mydomain.com <sip:102@mydomain.com>;tag=analog-sip28734. To: 0098146 <sip:0098146@mydomain.com>;tag=9A65C-1F0E. Date: Fri, 01 Mar 2002 00:10:32 GMT. Call-ID: 32268(a)192.168.11.102. Server: Cisco-SIPGateway/IOS-12.x. CSeq: 101 INVITE. Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER. Allow-Events: telephone-event. Contact: <sip:0098146@10.30.30.19:5060>. Record-Route: <sip:10.30.30.18;ftag=analog-sip28734;lr=on>. Content-Type: application/sdp. Content-Length: 252. . v=0. o=CiscoSystemsSIP-GW-UserAgent 6865 4884 IN IP4 10.30.30.19. s=SIP Call. c=IN IP4 10.30.30.19. t=0 0. m=audio 16400 RTP/AVP 18 103. c=IN IP4 10.30.30.19. a=rtpmap:18 G729/8000. a=fmtp:18 annexb=no. a=rtpmap:103 telephone-event/8000. a=fmtp:103 0-15. # U 10.30.30.18:5060 -> 192.168.11.102:5060 SIP/2.0 200 OK. Via: SIP/2.0/UDP 192.168.11.102:5060;branch=z9hG4bK10145. From: 102(a)mydomain.com <sip:102@mydomain.com>;tag=analog-sip28734. To: 0098146 <sip:0098146@mydomain.com>;tag=9A65C-1F0E. Date: Fri, 01 Mar 2002 00:10:32 GMT. Call-ID: 32268(a)192.168.11.102. Server: Cisco-SIPGateway/IOS-12.x. CSeq: 101 INVITE. Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, COMET, REFER, SUBSCRIBE, NOTIFY, INFO, UPDATE, REGISTER. Allow-Events: telephone-event. Contact: <sip:0098146@10.30.30.19:5060>. Record-Route: <sip:10.30.30.18;ftag=analog-sip28734;lr=on>. Content-Type: application/sdp. Content-Length: 252. . v=0. o=CiscoSystemsSIP-GW-UserAgent 6865 4884 IN IP4 10.30.30.19. s=SIP Call. c=IN IP4 10.30.30.19. t=0 0. m=audio 16400 RTP/AVP 18 103. c=IN IP4 10.30.30.19. a=rtpmap:18 G729/8000. a=fmtp:18 annexb=no. a=rtpmap:103 telephone-event/8000. a=fmtp:103 0-15. # U 192.168.11.102:5060 -> 10.30.30.18:5060 ACK sip:10.30.30.18;ftag=analog-sip28734;lr SIP/2.0. Via: SIP/2.0/UDP 192.168.11.102:5060;branch=z9hG4bK9072. To: 0098146 <sip:0098146@mydomain.com>;tag=9A65C-1F0E. From: 102(a)mydomain.com <sip:102@mydomain.com>;tag=analog-sip28734. Call-ID: 32268(a)192.168.11.102. CSeq: 101 ACK. Route:<sip:0098146@mydomain.com>. Contact: <sip:102@192.168.11.102:5060>. Max-Forwards: 70. Content-Length: 0. . # ***** [Remaining retries omitted .] # U 10.30.30.19:55584 -> 10.30.30.18:5060 BYE sip:102@192.168.11.102:5060 SIP/2.0. Via: SIP/2.0/UDP 10.30.30.19:5060;branch=z9hG4bK11BD8. From: 0098146 <sip:0098146@mydomain.com>;tag=9A65C-1F0E. To: 102(a)mydomain.com <sip:102@mydomain.com>;tag=analog-sip28734. Date: Fri, 01 Mar 2002 00:10:32 GMT. Call-ID: 32268(a)192.168.11.102. User-Agent: Cisco-SIPGateway/IOS-12.x. Max-Forwards: 70. Route: <sip:10.30.30.18;ftag=analog-sip28734;lr=on>. Timestamp: 1014941453. CSeq: 101 BYE. Content-Length: 0. . # U 10.30.30.18:5060 -> 192.168.11.102:5060 BYE sip:102@192.168.11.102:5060 SIP/2.0. Record-Route: <sip:10.30.30.18;ftag=9A65C-1F0E;lr=on>. Via: SIP/2.0/UDP 10.30.30.18;branch=z9hG4bK6b5f.4db3aed2.0. Via: SIP/2.0/UDP 10.30.30.19:5060;branch=z9hG4bK11BD8. From: 0098146 <sip:0098146@mydomain.com>;tag=9A65C-1F0E. To: 102(a)mydomain.com <sip:102@mydomain.com>;tag=analog-sip28734. Date: Fri, 01 Mar 2002 00:10:32 GMT. Call-ID: 32268(a)192.168.11.102. User-Agent: Cisco-SIPGateway/IOS-12.x. Max-Forwards: 69. Timestamp: 1014941453. CSeq: 101 BYE. Content-Length: 0. P-hint: rr-enforced. . # U 192.168.11.102:5060 -> 10.30.30.18:5060 SIP/2.0 200 OK. Via: SIP/2.0/UDP 10.30.30.18;branch=z9hG4bK6b5f.4db3aed2.0,SIP/2.0/UDP 10.30.30.19:5060;branch=z9hG4bK11BD8. To: 102(a)mydomain.com <sip:102@mydomain.com>;tag=analog-sip28734. From: 0098146 <sip:0098146@mydomain.com>;tag=9A65C-1F0E. Call-ID: 32268(a)192.168.11.102. CSeq: 101 BYE. Record-Route:<sip:10.30.30.18;ftag=9A65C-1F0E;lr>. Content-Length: 0. . # U 10.30.30.18:5060 -> 10.30.30.19:5060 SIP/2.0 200 OK. Via: SIP/2.0/UDP 10.30.30.19:5060;branch=z9hG4bK11BD8. To: 102(a)mydomain.com <sip:102@mydomain.com>;tag=analog-sip28734. From: 0098146 <sip:0098146@mydomain.com>;tag=9A65C-1F0E. Call-ID: 32268(a)192.168.11.102. CSeq: 101 BYE. Record-Route:<sip:10.30.30.18;ftag=9A65C-1F0E;lr>. Content-Length: 0.