/mcpremains unregistered from Unified CM until the Phone On Time defined in the Product Specific Configuration for this device. 22 CallManagerForcedRestart - (SIP Only) The device did not respond to an Apply Config request and as a result, Unified CM sent a restart request to the device. The device may be offline due to a power outage or network problem. Confirm that the device is powered-up and that network connectivity exists between the device and Unified CM. 23 SourceIPAddrChanged - (SIP Only) The device has been unregistered because the IP address in the Contact header of the REGISTER message has changed. The device will be automatically re-registered. No action is necessary. 24 SourcePortChanged - (SIP Only) The device has been unregistered because the port number in the Contact header of the REGISTER message has changed. The device will be automatically re-registered. No action is necessary. 25 RegistrationSequenceError - (SCCP only) A device requested configuration information from Unified CM at an unexpected time and Unified CM no longer had the requested information in memory. The device will automatically attempt to register again. If this alarm 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 214/343