210-060 Question #227: Real Exam Question with Answer & Explanation

The correct answer is B: Cisco Unified Communications Manager subscriber. Multiple users in the same Call Manager group receiving fast busy tone on off-hook points to a problem with the CUCM subscriber serving that group, not individual endpoints.

Question

Several users in the same Call Manager group reported that they receive a fast busy tone when they go off hook. They reported that the issue went away after a few minutes. Where should the voice systems administrator begin troubleshooting?

Options

ASIP gateway
BCisco Unified Communications Manager subscriber
Cnetwork cable
D7945 IP phone

Explanation

Multiple users in the same Call Manager group receiving fast busy tone on off-hook points to a problem with the CUCM subscriber serving that group, not individual endpoints.

Common mistakes.

A. A SIP gateway issue would affect calls routing through that specific gateway, not all phones in a Call Manager group at the off-hook stage before any call is placed.
C. A failed network cable would affect only the individual device connected to that cable, not an entire group of users.
D. A single IP phone model issue would not simultaneously affect multiple users across a group; this would only be relevant if one user reported the problem.

Concept tested. CUCM subscriber fault isolation in Call Manager groups

Reference. https://www.cisco.com/c/en/us/support/docs/unified-communications/unified-communications-manager-callmanager/211322-Troubleshoot-Cisco-Unified-Communication.html

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