Implementing and Operating Cisco Collaboration Core Technologies (CLCOR) — Question 168

An administrator executes the debug isdn q931 command while debugging a failed call. After a test call is placed, the logs return a disconnect cause code of 1.
What is the cause of this problem?

Answer options

• A. The dialed number is not assigned to an endpoint.
• B. The destination number rejects the call.
• C. The destination number is busy.
• D. The media resource is unavailable.

Correct answer: A

Explanation

The disconnect cause code of 1 indicates that the dialed number is not assigned to any endpoint, which means the call cannot be completed. The other options do not apply here because they would produce different cause codes; for instance, a busy signal or a rejection would return different disconnect cause codes.