This test checks the D-channel connection between the server and an endpoint or adjunct.

A D-channel XID frame is sent to the endpoint or adjunct over the point-to-point signaling link. The test passes if the endpoint or adjunct responds with a layer-2 XID-RESPONSE frame.

This test must be administered to not run on the Station Administration screen for ports on a TN2208.

This test runs on BRI-SET, Various Adjuncts.