/mcpaction is for the device to regenerate its certificate with the AES_128_SHA cipher algorithm. 14 MalformedRegisterMsg - (SIP only) A SIP REGISTER message could not be processed because of an illegal format. Possible causes include a missing Call-ID header, a missing AoR in the To header, or an expires value that is too small. Check the REGISTER message for any of these issues and if you find one, correct the issue. 15 ProtocolMismatch - The protocol of the device (SIP or SCCP) does not match the configured protocol in Unified CM. Recommended actions: 1) Verify that the device is configured with the appropriate protocol; 2) Verify that the firmware load ID on the Device Defaults page in Cisco Unified CM Administration is correct and actually exists on the TFTP server; 3) If there is a firmware load ID configured on the Device Configuration page, verify that it is correct and that it exists on the TFTP server (on Cisco Unified OS Administration page, access Software Upgrades > TFTP File Management, then look for the file name as specified by load ID); 4) Restart the TFTP and Cisco CallManager services. Use the Cisco Unified OS Administration TFTP File Management page to verify that the configured firmware loads exist. 16 DeviceNotActive - The device has not been activated 17 AuthenticatedDeviceAlreadyExists - A device with the same name is already registered. If this occurs repeatedly, collect SDL/SDI detailed traces with "Enable SIP Keep Alive (REGISTER Refresh) Trace" and "Enable SCCP Keep Alive Trace" under Cisco CallManager services turned on and contact the Cisco Technical Assistance Center (TAC). There may be an attempt by unauthorized devices to register. 18 ObsoleteProtocolVersion - (SCCP only) A SCCP device registered with an obsolete protocol version. Power-cycle the phone. Verify that the TFTP service is activated. Verify that the TFTP server is reachable from the device. If there is a firmware 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 165/343