Symptoms - ACM Phones could not make or receive calls from internal or external
Observations - Several users reported the outage. Several minutes later our alerting system triggered the outage. We noticed that the controller was not responding to network connections. SysLog failed to load proper logs.
Resolution - Restarted the phone controller.
Root Cause Analysis - Since the upgrade of the controller we did not properly setup the SysLog receiver so we are unable to determine the route cause at this time. We verified that the SysLog is now working and sending detailed reports back for any future events. We also verified the ACL and ACP SysLog’s were running as well.