This test performs a service state audit with the far-end terminal adapter to ensure both sides agree on the service state.
If no reply is received within 2 minutes, the system will automatically try once again. If that attempt fails, an error will be logged (Error Type 3073) and the system will then attempt recovery by automatically retrying approximately every 15 minutes. If the port was initially in the INS (in-service) state, it will now be placed in the MTC/FE (maintenance state, far-end problem) state. Until a Service State audit attempt is successful, no outgoing calls will be placed over this port, but incoming calls will be accepted. The service state of this port does not affect the service state of other ports. If an incoming call that uses this port is presented while in such a state, a Service State audit attempt will immediately be attempted (that is, the system will not wait for the 15-minute cycle, but will instead try to recover immediately).
PASS for this test only means that a message to the far end was successfully sent.
To check the service state of an TBRI-TRK ISDN BRI channel, enter status trunk grp#/mem#.
To check the service state of a PRI endpoint port, enter status pri-endpoint extension.
This test is run on the following maintenance objects:
