We have a direct sip trunk to our cisco call manager (version 8.6) and we've got dial-in conferencing set up so users can now setup phone conferences using Lync. I recently started to get reports of phone conferences that would just drop for no reason. The actual Lync web conference would stay up and continue but anyone dialed in over the phone would get disconnected and the organizer would have to set up the dial-in conference again. Normal Lync calling to cisco phones works fine, only happens with dial-in conferencing. I set up my own Lync dial in conference and just let it sit and every time I did so the dial-in conference would drop at exactly 59 min and 28 seconds. Snooper Lync mediation server logs below. It looks like this is pointing to something on the Cisco gateway that is terminating the call, something other than Lync. I am correct in assuming this? Has anyone come across this before?
Start-Line: GatewayCall SignalingState is disconnected, reason is: TerminatedRemotelyDirection: Inbound
Start-Line: GatewayMedia's InnerDispose was called with shutdown = True. Direction: Inbound
Start-Line: Terminating Proxy side call with session state: Connected, sip-response: 200, ms-diag: 10027, ms-diag reason: Normal termination response from gateway after the call was established.
