Refer to the exhibit. A call made through the Cisco Unified Border Element to pilot 2000 is failing. What is causing the call to fail?

Question

Exhibit

Options

• AThe Cisco Unified Border Element is not receiving a response to its OPTION keepalives.
• BThe destination pattern is incorrect for the dialed number.
• CFADs are not disabled on the outgoing dial peer.
• DNo codecs are configured on the dial peers.

• A
  3% (2)
• B
  81% (47)
• C
  3% (2)
• D
  12% (7)

Explanation

In the exhibit (a CUBE dial-peer configuration), the destination-pattern on the outbound dial peer does not correctly match the dialed number 2000. A misconfigured destination-pattern - for example, using the wrong number of digits, incorrect wildcard characters, or a pattern that simply doesn't match '2000' - causes the router to fail to select the correct outbound dial peer, resulting in call failure. Option A (OPTIONS keepalives) would cause the peer to be marked inactive but is not the root cause shown. Option C (FADs) relates to Fax/Modem pass-through and would not cause a basic voice call to fail to route. Option D (no codecs) would result in a media negotiation failure after call setup, not a routing failure.

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