Cisco Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0) : 642-427

642-427 real exams

Exam Code: 642-427

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

Updated: Sep 05, 2025

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.

Refer to the exhibit. All phones are placed in the Internal_Pt partition. The CSS for all phones contains the partition Internal_Pt, and Vml.CSS contains the voice-mail hunt pilot. When a call is placed from extension 2001 to 2002, which statement is true?

A) Extension 2002 will ring, and if the call is not answered, the call will match the translation pattern and then be forwarded to voice mail
B) Extension 2002 will ring, and if the call is not answered, the call will match the translation pattern and then be blocked.
C) The call will be answered by voice mail.
D) Extension 2002 will ring.
E) The call will be blocked.


2. Refer to the exhibit.

The exhibit shows the output of debug isdn q931. An inbound PSTN call was received by an MGCP gateway that is registered with a Cisco Unified Communications Manager. The call failed to ring extension 3001. If the phone at extension 3001 is registered and reachable through the gateway inbound CSS, which two actions can resolve this issue? (Choose two.)

A) Configure a voice translation profile in the MGCP Cisco IOS gateway with a voice translation rule that truncates the number from ten digits to four digits.
B) Configure a translation pattern in Cisco Unified Communications Manager that can be accessed by the gateway CSS to truncate the called number to four digits.
C) Configure the Cisco IOS command num-exp 2288223001 3001 on the gateway.
D) Change the significant digits for inbound calls to 4 in the gateway configuration in Cisco Unified Communications Manager.
E) Configure a called-party transformation CSS on the gateway in Cisco Unified Communications Manager that includes a pattern that transforms the number from ten digits to four digits.
F) Configure the digit strip 4 on the MGCP gateway configuration in Cisco Unified Communications Manager under Incoming Called Party Settings.


3. Refer to the topology exhibit.

When the Cisco Unified Communications Manager at the BR1 site loses connectivity to the SAF network, the call to extension 3001 fails to reroute via the PSTN. Examine the SDI trace in the exhibit. What is the most likely cause of the failure?


A) The calling phone line CSS does not have access to the V route pattern.
B) CCD requesting service does not have the correct partition configured for CCD learned patterns
C) The full E.164 number for extension 3001 could not be constructed.
D) The AAR CSS for the HQ phone does not have access to the \\ route pattern.
E) The Cisco Unified Communications Manager at the HQ site was unable to determine the ToDlD number to extension 3001.


4. The following statements describe the icons' functions displayed in the exhibit.
The GK icon can be clicked to view the output of the show gatekeeper endpoint command.
The CallManager cluster can be clicked to see the trunk configuration screens.
The X of each popup can be clicked to return to the item.
In order to support three local zones West, East and EMEA, the 10.1.110.1 router is configured with a gatekeeper. After issuing the show gatekeeper endpoints command, you find that the West zone device is lost. Please choose the proper measure that should be taken to the configuration in the CallManager for it to register with the gatekeeper of the zone West.

A) Restart the callmanger so it can register with the gatekeeper
B) Change the Device Name to be the IP address of the gatekeeper in the CallManager Trunk Configuration page
C) Configure a zone name on the CallManager trunk
D) Set the Terminal Type to terminal in the Gatekeeper Information field of the Trunk Configuration


5. A network sniffer is implemented to troubleshoot call setup failures. Initially, the sniffer is able to see only traffic sent to and from the computer that is running the sniffer.
Which two solutions allow the sniffer to see H.323 call setup traffic to and from different devices other than the computer that is running the sniffer. (Choose two.)

A) Configure the H.323 gateway to have an extra stream of the H.323 call setup packets sent over multiple hops to the computer that is running the sniffer.
B) Configure the ERSPAN to have an extra stream of the H.323 call setup packets sent over multiple hops to the computer that is running the sniffer.
C) Configure Cisco Unified Communications Manager to redirect the H.323 call setup packets to the computer that is running the sniffer.
D) Configure the SPAN to have an extra stream of the H.323 call setup packets sent to a different switch port to the computer that is running the sniffer.


Solutions:

Question # 1
Answer: D
Question # 2
Answer: B,D
Question # 3
Answer: D
Question # 4
Answer: C
Question # 5
Answer: B,D

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