What is the cause of this problem?

exams 350-801 V4 350-801 exam 0 Comments

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

Answer: D