Cisco 350-801 Question Answer

Refer to the exhibit Engineers dial the 66895531 route pattern from 66623536 to reach out to the IT department in a different building with different Cisco UCM clusters When doing this the engineers receive a busy tone The issue is reported to the administrator who used ON 56436223 to validate the issue and received the same busy tone The administrator used the Real Time Monitoring Tool to verify the termination code of the call and found SIP_503_SERVICE_UNAVAI LABIE What is the reason for this failure?

