/mcp0 Unknown - The device has not indicated what this IPv6 address is used for 1 Administrative only - The device has indicated that this IPv6 address is used for administrative communication (web interface) only 2 Signal only - The device has indicated that this IPv6 address is used for control signaling only 3 Administrative and signal - The device has indicated that this IPv6 address is used for administrative communication (web interface) and control signaling Error Message %UC_CALLMANAGER-4-SIPLineRegistrationError: %[IPAddress=String][DevicePort=UInt] [{Optional}DeviceName=String][{Optional}MACAddress=String][{Optional}DeviceType=Enum] [{Optional}Reason=Enum][ConnectingPort=UInt][ConfiguredDNs=String][SIPUser=String] [IPV6Address=String][AppID=String][ClusterID=String][NodeID=String]: SIP line registration error. Explanation A SIP line attempted to register with Cisco Unified Communications Manager (Unified CM) and failed due to the error indicated in the Reason Code parameter. The alarm could indicate a device misconfiguration, database error, or an illegal/unknown device trying to attempt a connection. This alarm typically occurs with a third-party device. Recommended Action Verify that the directory number(s) on the device itself match the directory number(s) that are configured for that device in Cisco Unified CM Administration. Also, confirm that database replication is working. To do so, check the Unified CM Database Status report in Cisco Unified Reporting to verify that database replication is working. You can also go to Real-Time Reporting Tool (RTMT) and check the Replication Status in the Database Summary page. If status shows 2, then replication is working. Refer to the reason code definitions for additional recommended actions. Reason Code - Enum Definitions Enum Definitions - DeviceType Value Definition 1 CISCO_30SP+ 2 CISCO_12SP+ 3 CISCO_12SP 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 217/343