cmLoopTermCode is a read-only enumeration reporting why a loopback test ended, such as durationExpired, operatorStopped, noLCresponse, or lcInitError. An administrator checks this after a test completes to understand whether it finished normally or failed to even start properly due to equipment not responding. For example, if cmLoopTermCode shows noCPEresponse, the operator would suspect the customer's modem is unreachable rather than a problem with the test itself.