c8fa26c0_Internal_Error_Codes___DocWiki__Descriptor
[Code] 12 [Explanation] An internal process communication error occurred. This condition usually indicates some software error, but may also mean that some process was not running because of misconfiguration. [Category] 178 [Descriptor] 
Inter-process communication
Cisco IOS Voice Troubleshooting and Monitoring -- Cisco VoIP Internal Error Codes - DocWiki
Descriptor