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Cisco CCNP Voice 642-427 Braindumps

642-427

Exam Code: 642-427

Exam Name: Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0)

Updated: May 27, 2026

Q & A: 301 Questions and Answers

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Cisco Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0) Sample Questions:

1. Refer to the exhibit.

Local 10-digit dialing in the North American Numbering Plan to area code 456 is failing.
Which two changes are needed to enable 10-digit dialing? (Choose two.)

A) Change dial peer 210 to port 0/0/0:23.
B) Change dial peer 210 to destination-pattern 9456.......
C) Remove the command prefix 456 from dial peer 210.
D) Change dial peer 210 to destination-pattern 456.......


2. In Cisco Unified Communications Manager (CUCM), you have three Service Advertisement Framework (SAF) forwarders configured, what happens when the primary and the backup SAF forwarders fail?

A) CUCM tries to reconfigure the existing primary and backup SAF forwarders.
B) You will need to designate another primary SAF forwarder.
C) Primary and backup SAF forwarders are re-initated automatically.
D) CUCM continues to work without connecting to the third SAF forwarder.
E) The third SAF forwarder automatically becomes the primary SAF forwarder.
F) TCP timer continues to initiate connection with the primary and backup SAF forwarders.


3. Remote branch offices with Cisco IP Phones have just been implemented across a 2 Mb/s WAN link from your existing Cisco Unified Communications Manager cluster in headquarters. The WAN links are heavily utilized for data traffic. Users from the branch office report poor audio quality when they call the headquarters.
Which approach can you implement to directly improve audio quality in this scenario?

A) Implement LLQ.
B) Implement weighted random early detection.
C) Implement CBWFQ.
D) Implement TCP header compression.


4. Refer to the exhibit. You have received a trouble ticket stating that calls to local PSTN numbers are failing. To place a call, Cisco Unified CallManager users dial the access code "9," followed by seven digits. After entering the debug voice dialpeer command on the H.323 gateway, you have the user attempt the call again.

Based on the debug output, what is the most likely cause of this problem?

A) The gateway dial peer needs to prefix the access code to the called number.
B) Cisco Unified CallManager is stripping the access code, resulting in only seven digits being sent to the gateway.
C) There is a physical layer issue with the circuit.
D) The call is not matching an inbound dial peer resulting in a codec mismatch.


5. DRAG DROP


Solutions:

Question # 1
Answer: A,B
Question # 2
Answer: D
Question # 3
Answer: A
Question # 4
Answer: B
Question # 5
Answer: Only visible for members

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