In the Cisco CallManager 4.x Cluster, after the Customer Response Solution (CRS) is installed on a subscriber server, the JTAPI subsystem fails to start. The log located at c:\ program files\wfavvid\log\ciscomivr.log contains the unspecified errorcom.cisco.jtapi.CiscoRegistrationExceptionImpl: At least one media capability must be specified error message.
A restart of the CRS Engine has no effect on this issue.
This error message in the log indicates that it is a failed install, and that the codec does not get set in the registry for some reason. Check this location in the CRS server registry: