Hi,

I am stuck with the Cisco gateway (SIP-PSTN) disconnecting the call. The scenario is that a SIP client makes a call which is forwarded to a Cisco gateway, the call gets established but is disconnected after 20-30 seconds. Bellow is the call trace from ethereal, the problem is that the Cisco gateway (for some reason I don't know) sends a BYE. Does this have anything to do with the ACKS?

I have tested the same scenario with the UA being Windows Messenger and the Cisco Gateway, and there are no problems.

Any advice on troubleshooting this?

Thanks in advance, Hamid

PS: 192.168.11.102 = UA 10.30.30.18 = OpenSER 10.30.30.19 = Cisco Gateway

---------------------------------------------------------------------------- |Time | 192.168.11.102 | 10.30.30.18 | 10.30.30.19 | ---------------------------------------------------------------------------- |9.739 | INVITE SDP ( g729 g711U g711A telephone-event) | |SIP From: sip:102@mydomain.com To:sip:0098146@mydomain.com | |(5060) ------------------> (5060) | | |9.743 | | INVITE SDP ( g729 g711U g711A telephone-event) |SIP Request | | |(5060) ------------------> (5060) | |9.743 | 100 trying -- your call is important to us | |SIP Status | |(5060) <------------------ (5060) | | |9.752 | | 100 Trying| |SIP Status | | |(5060) <------------------ (5060) | |9.932 | 100 Trying| | |SIP Status | |(5060) <------------------ (5060) | | |11.668 | | 183 Session Progress SDP ( g729 telephone-event) |SIP Status | | |(5060) <------------------ (5060) | |11.670 | 183 Session Progress SDP ( g729 telephone-event) | |SIP Status | |(5060) <------------------ (5060) | | |11.671 | | 200 OK SDP ( g729 telephone-event) |SIP Status | | |(5060) <------------------ (5060) | |11.673 | 200 OK SDP ( g729 telephone-event) | |SIP Status | |(5060) <------------------ (5060) | | |11.687 | RTP (g729) | |RTP Num packets:1634 Duration:19.469s ssrc:126289683 | |(6000) <-------------------------------------- (16400) | |11.735 | ACK | | |SIP Request | |(5060) ------------------> (5060) | | |12.003 | RTP (g729) | |RTP Num packets:18 Duration:0.161s ssrc:3634 | |(6000) --------------------------------------> (16400) | |12.169 | | 200 OK SDP ( g729 telephone-event) |SIP Status | | |(5060) <------------------ (5060) | |12.171 | 200 OK SDP ( g729 telephone-event) | |SIP Status | |(5060) <------------------ (5060) | | |12.184 | RTP (g729) | |RTP Num packets:100 Duration:0.979s ssrc:3634 | |(6000) --------------------------------------> (16400) | |12.254 | ACK | | |SIP Request | |(5060) ------------------> (5060) | | |13.169 | | 200 OK SDP ( g729 telephone-event) |SIP Status | | |(5060) <------------------ (5060) | |13.172 | 200 OK SDP ( g729 telephone-event) | |SIP Status | |(5060) <------------------ (5060) | | |13.183 | RTP (g729) | |RTP Num packets:200 Duration:1.980s ssrc:3634 | |(6000) --------------------------------------> (16400) | |13.240 | ACK | | |SIP Request | |(5060) ------------------> (5060) | | |15.169 | | 200 OK SDP ( g729 telephone-event) |SIP Status | | |(5060) <------------------ (5060) | |15.171 | 200 OK SDP ( g729 telephone-event) | |SIP Status | |(5060) <------------------ (5060) | | |15.183 | RTP (g729) | |RTP Num packets:400 Duration:3.980s ssrc:3634 | |(6000) --------------------------------------> (16400) | |15.235 | ACK | | |SIP Request | |(5060) ------------------> (5060) | | |19.169 | | 200 OK SDP ( g729 telephone-event) |SIP Status | | |(5060) <------------------ (5060) | |19.172 | 200 OK SDP ( g729 telephone-event) | |SIP Status | |(5060) <------------------ (5060) | | |19.183 | RTP (g729) | |RTP Num packets:400 Duration:3.980s ssrc:3634 | |(6000) --------------------------------------> (16400) | |19.245 | ACK | | |SIP Request | |(5060) ------------------> (5060) | | |23.169 | | 200 OK SDP ( g729 telephone-event) |SIP Status | | |(5060) <------------------ (5060) | |23.172 | 200 OK SDP ( g729 telephone-event) | |SIP Status | |(5060) <------------------ (5060) | | |23.183 | RTP (g729) | |RTP Num packets:400 Duration:3.980s ssrc:3634 | |(6000) --------------------------------------> (16400) | |23.256 | ACK | | |SIP Request | |(5060) ------------------> (5060) | | |27.169 | | 200 OK SDP ( g729 telephone-event) |SIP Status | | |(5060) <------------------ (5060) | |27.172 | 200 OK SDP ( g729 telephone-event) | |SIP Status | |(5060) <------------------ (5060) | | |27.211 | ACK | | |SIP Request | |(5060) ------------------> (5060) | | |27.212 | RTP (g729) | |RTP Num packets:402 Duration:3.971s ssrc:3634 | |(6000) --------------------------------------> (16400) | |31.170 | | BYE | |SIP Request | | |(5060) <------------------ (55584) | |31.174 | BYE | | |SIP Request | |(5060) <------------------ (5060) | | |31.221 | 200 OK | | |SIP Status | |(5060) ------------------> (5060) | | |31.223 | | 200 OK | |SIP Status | | |(5060) ------------------> (5060) | |39.683 | 408 Request Timeout | |SIP Status | |(5060) <------------------ (5060) | | |39.751 | ACK | | |SIP Request | |(5060) ------------------> (5060) | | |39.752 | | ACK | |SIP Request | | |(5060) ------------------> (5060) |