/mcpwas specified by an IPv6 address so no DNS resolution was needed ReasonForOutOfService - Reason For Out Of Service Enum Definitions - ReasonForOutOfService Value Definition 0 10 TCPtimedOut - The TCP connection to the Cisco Unified Communication Manager experienced a timeout error 12 TCPucmResetConnection - The Cisco Unified Communication Manager reset the TCP connection 13 TCPucmAbortedConnection - The Cisco Unified Communication Manager aborted the TCP connection 14 TCPucmClosedConnection - The Cisco Unified Communication Manager closed the TCP connection 15 SCCPKeepAliveFailure - The device closed the connection due to a SCCP KeepAlive failure 16 TCPdeviceLostIPAddress - The connection closed due to the IP address being lost. This may be due to the DHCP Lease expiring or the detection of IP address duplication. Check that the DHCP Server is online and that no duplication has been reported by the DHCP Server 17 TCPDeviceRegsistrationTimedOut - The device closed the TCP connection due to a registration timeout 18 TCPclosedConnectHighPriorityUcm - The device closed the TCP connection in order to reconnect to a higher priority Cisco Unified CM 5/24/26, 3:34 AM System Error Messages for Cisco Unified Communications Manager 15 - Cisco https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/err_msgs/15_x/ccmalarms15.html 332/343