After the call establishment to Zoom meeting from Cisco endpoint(all model and different versions) the media RTP traffic stays only for 15-30secs(we can see and hear each other) and get VCS 408 Request Timeout Error, not sure what is causing the issue.
Setup: Endpoint -> VCSc -> Direct SIP Trunk to Zoom thru cloud connection.
Here is the media failed endpoint log looks like, at end of the log you will find "No incoming video and No incoming data" before the media stops.
2020-03-16T18:59:55.364-04:00 a9 appl[2438]: MainEvents I: LayoutUpdated ...frame[GUI] gui p=1 src=1 ig=-1 CSISceneId=0 placeholder=0 avatar=0 reso=-1/-1 crop=0/0/1000/1000 x=0 y=0 w=10000 h=10000 l=0 b=0 m=0 letterbox fcref=0 boardSessionId=0
2020-03-16T18:59:57.416-04:00 a9 appl[2438]: SipPacket I: SIP Msg: Incoming <= 200 OK, CSeq: 100 INVITE, Remote: VCSc:5061, CallId: 654ef012463d7b200315a519139d94cd
2020-03-16T18:59:57.417-04:00 a9 appl[2438]: SipPacket I: SIP Msg: Outgoing => ACK, CSeq: 100 ACK, Remote: VCSc:5061, CallId: 654ef012463d7b200315a519139d94cd
2020-03-16T18:59:57.823-04:00 a9 appl[2438]: RTP I: ICMP: 204.141.31.102 type: Destination Unreachable(1), unreachable port, Cisco endpoint:2429 -> 204.141.31.102:3819
2020-03-16T19:00:00.108-04:00 a9 appl[2438]: AdaptationResilience W: [wqos] CNetworkMonitor::HandleFeedback, drop 0 receive rate feedback this=0xb01afb68
2020-03-16T19:00:00.916-04:00 a9 appl[1408]: Last message 'AdaptationResilience' repeated 8 times, suppressed by syslog-ng on (none)
2020-03-16T19:00:00.915-04:00 a9 appl[2438]: RTP I: ICMP: 204.141.31.102 type: Destination Unreachable(1), unreachable port, Cisco endpoint:2348 -> 204.141.31.102:3812
2020-03-16T19:00:00.926-04:00 a9 appl[2438]: RTP I: ICMP: 204.141.31.102 type: Destination Unreachable(1), unreachable port, Cisco endpoint:2366 -> 204.141.31.102:3814
2020-03-16T19:00:00.947-04:00 a9 appl[1408]: Last message 'RTP I: ICMP: 204.141' repeated 1 times, suppressed by syslog-ng on (none)
2020-03-16T19:00:00.946-04:00 a9 appl[2438]: RTP I: ICMP: 204.141.31.102 type: Destination Unreachable(1), unreachable port, Cisco endpoint:2348 -> 204.141.31.102:3812
2020-03-16T19:00:00.957-04:00 a9 appl[2438]: RTP I: ICMP: 204.141.31.102 type: Destination Unreachable(1), unreachable port, Cisco endpoint:2366 -> 204.141.31.102:3814
2020-03-16T19:00:01.426-04:00 a9 appl[1408]: Last message 'RTP I: ICMP: 204.141' repeated 1 times, suppressed by syslog-ng on (none)
2020-03-16T19:00:01.425-04:00 a9 appl[2438]: SipPacket I: SIP Msg: Incoming <= 200 OK, CSeq: 100 INVITE, Remote: VCSc:5061, CallId: 654ef012463d7b200315a519139d94cd
2020-03-16T19:00:01.428-04:00 a9 appl[2438]: SipPacket I: SIP Msg: Outgoing => ACK, CSeq: 100 ACK, Remote: VCSc:5061, CallId: 654ef012463d7b200315a519139d94cd
2020-03-16T19:00:01.917-04:00 a9 appl[2438]: RTP I: ICMP: 204.141.31.102 type: Destination Unreachable(1), unreachable port, Cisco endpoint:2348 -> 204.141.31.102:3812
2020-03-16T19:00:03.692-04:00 a9 appl[1408]: Last message 'RTP I: ICMP: 204.141' repeated 1 times, suppressed by syslog-ng on (none)
2020-03-16T19:00:03.692-04:00 a9 appl[2438]: MainEvents I: InputAudioChannelChanged(p=239,gid=3116) msctrlId=2625 channels=2 encryption=AES-128 muted=False protocol=Off
2020-03-16T19:00:03.919-04:00 a9 appl[2438]: RTP I: ICMP: 204.141.31.102 type: Destination Unreachable(1), unreachable port, Cisco endpoint:2366 -> 204.141.31.102:3814
2020-03-16T19:00:04.295-04:00 a9 appl[2438]: DEC_FSM-0 I: no incoming data
2020-03-16T19:00:04.920-04:00 a9 appl[2438]: RTP I: ICMP: 204.141.31.102 type: Destination Unreachable(1), unreachable port, Cisco endpoint:2366 -> 204.141.31.102:3814
2020-03-16T19:00:05.446-04:00 a9 appl[2438]: SipPacket I: SIP Msg: Incoming <= 200 OK, CSeq: 100 INVITE, Remote: VCSc:5061, CallId: 654ef012463d7b200315a519139d94cd
2020-03-16T19:00:05.448-04:00 a9 appl[2438]: SipPacket I: SIP Msg: Outgoing => ACK, CSeq: 100 ACK, Remote: VCSc:5061, CallId: 654ef012463d7b200315a519139d94cd
2020-03-16T19:00:05.921-04:00 a9 appl[2438]: RTP I: ICMP: 204.141.31.102 type: Destination Unreachable(1), unreachable port, Cisco endpoint:2366 -> 204.141.31.102:3814
2020-03-16T19:00:06.912-04:00 a9 appl[2438]: RTP I: ICMP: 204.141.31.102 type: Destination Unreachable(1), unreachable port, Cisco endpoint:2348 -> 204.141.31.102:3812
2020-03-16T19:00:09.452-04:00 a9 appl[1408]: Last message 'RTP I: ICMP: 204.141' repeated 2 times, suppressed by syslog-ng on (none)
2020-03-16T19:00:09.451-04:00 a9 appl[2438]: SipPacket I: SIP Msg: Incoming <= 200 OK, CSeq: 100 INVITE, Remote: VCSc:5061, CallId: 654ef012463d7b200315a519139d94cd
2020-03-16T19:00:09.452-04:00 a9 appl[2438]: SipPacket I: SIP Msg: Outgoing => ACK, CSeq: 100 ACK, Remote: VCSc:5061, CallId: 654ef012463d7b200315a519139d94cd
2020-03-16T19:00:09.924-04:00 a9 appl[2438]: RTP I: ICMP: 204.141.31.102 type: Destination Unreachable(1), unreachable port, Cisco endpoint:2348 -> 204.141.31.102:3812
2020-03-16T19:00:10.900-04:00 a9 appl[2438]: DEC_FSM-0 I: no incoming video
2020-03-16T19:00:10.924-04:00 a9 appl[2438]: RTP I: ICMP: 204.141.31.102 type: Destination Unreachable(1), unreachable port, Cisco endpoint:2366 -> 204.141.31.102:3814
2020-03-16T19:00:11.208-04:00 a9 appl[2438]: MainEvents I: LayoutUpdated(p=1) outputNo=1 og=109
2020-03-16T19:00:11.208-04:00 a9 appl[2438]: MainEvents I: LayoutUpdated ...frame[GUI] gui p=1 src=1 ig=-1 CSISceneId=0 placeholder=0 avatar=0 reso=-1/-1 crop=0/0/1000/1000 x=0 y=0 w=10000 h=10000 l=0 b=0 m=0 letterbox fcref=0 boardSessionId=0
2020-03-16T19:00:11.925-04:00 a9 appl[2438]: RTP I: ICMP: 204.141.31.102 type: Destination Unreachable(1), unreachable port, Cisco endpoint:2366 -> 204.141.31.102:3814
2020-03-16T19:00:12.411-04:00 a9 appl[2438]: MainEvents I: PresentationPreviewStarted() instance=1 input 2 autoStartDesktop
2020-03-16T19:00:12.611-04:00 a9 appl[2438]: MainEvents I: LayoutUpdated(p=1) outputNo=1 og=109
