Exam Name: Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0)
Certification Provider: Cisco
Corresponding Certification: CCNP Voice
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Cisco 642-427 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: QoS and Network Integration | - Voice quality issues
|
| Topic 2: Voicemail and Unified Messaging | - Cisco Unity Connection troubleshooting
|
| Topic 3: Call Control and Dial Plan Troubleshooting | - Call routing failures
|
| Topic 4: Endpoints and Registration Issues | - Endpoint performance issues
|
| Topic 5: Voice Gateway and Protocol Troubleshooting | - Media and codec issues
|
| Topic 6: Cisco Unified Communications Architecture Troubleshooting | - CUCM core components and services
|
Cisco Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0) Sample Questions:
Which of the following describes SIP Early Offer?
- A. Early Offer always uses session indicator 183
- B. In SIP Early Offer mode, the SDP media capabilities are sent in the INVITE message calling device.
- C. In SIP Early Offer mode, the SDP media capabilities are sent in the 200 OK messages of the calling device.
- D. In SIP Early Offer mode, the INVITE and the 200 OK messages use non-SDP message format to indicate SIP Early Offer
Correct Answer: B 🗳️
Explanation: Only visible for Pass4Leader members. You can sign-up / login (it's free).
You have added a subscriber server to your Cisco Unified CallManager 5.0 cluster. The server is functioning properly, but regular updates from the publisher are failing. All other publisher-subscriber communications are working properly in the cluster.
What is the problem?
- A. the service isn't included in the current CTL client
- B. the MIC for the service needs to be included in the CTL client
- C. the correct username and password are not being applied in the subscriber
- D. the CTL client wasn't signed with the security token when the service was included in it
- E. the Cisco Unified CallManager Administrator username and password have been changed in the publisher
Correct Answer: C 🗳️
Refer to the exhibit.
When the WAN link to headquarters fails, phones of the branch users are registered to the SRST gateway but cannot successfully dial 911 to the local Public Safety Answering Point.
Which action enables 911 dialing to the PSAP when the WAN link is down?
- A. Add the command MGCP.
- B. Add the command prefix 911 to dial peer 911.
- C. Add the command telephony-service and configure Cisco Unified Communications Manager Express to the existing configuration.
- D. Dialing to the PSAP is not possible when the WAN link is down.
- E. Add the command ccm-manager redundant host 10.10.10.101.
Correct Answer: B 🗳️
You have received a trouble ticket stating that the MWI light is not coming on for a group of users. Further investigation reveals that the affected users are connected to the same subscriber in the cluster. Users that are connected to other subscribers in the same cluster are not experiencing this issue.
What is causing this problem?
- A. Database replication has an error or has failed.
- B. The MWI numbers for this subscriber have been changed.
- C. The voice-mail ports assigned to the subscriber are down.
- D. The Cisco Unity voice-mail services need to be restarted for the subscriber so all the users will receive proper MWI message indication.
Correct Answer: A 🗳️
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