I have CM 6.0 with Session Mgr 6.3. I have a SIP trunk group connecting to our bed control system named Teletrack. Teletrack is a VM server and has been working fine for last 8 months or so. We have recently started experiencing errors listed above for the trunks, then it starts working again. It is an intermittent error I suspect is network related but network team isn't seeing errors. Any suggestions would be greatly appreciated. I've tried to reboot stand bye CM, interchange servers, and still experience issue. I have not rebooted Session Manager servers as my wireless devices are connecting and it would impact service. We have also rebooted Teletrack server. Thanks, Dave