/mcpManager; wait for the device to register 3 CTI failed to rehome the line; verify that the device is registered 4 Undefined line, possible cause could be that line is no more active on that device due to extension mobility login or logout 5 Device removed 6 Provider controlling the device is closed 7 Protocol used by the device is not supported 8 Application cannot control this line as CTI Allow Control is not enabled. Administrator has restricted the Line to be controllable by application. If the intent of the Administrator is to allow control of this line, enable the check box labelled Allow control of Device from CTI, in Unified CM Administration under Call Routing > Directory Number and choose the line that should be controlled by this application 9 Unable to register the device; application specified media type is not supported 10 Device is being reset; verify that the device is registered before opening the line 11 Unsuppported device configuration 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 21/343