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: Media Resources | - Media Termination Points - Transcoders and conference bridges - Music on Hold and annunciators |
| Topic 2: Cisco Unified Presence and Mobility | - Mobility and extension mobility issues - Presence service troubleshooting |
| Topic 3: IP Phones and Endpoints | - Phone registration and provisioning - Firmware and endpoint connectivity issues |
| Topic 4: Voice Gateways and Trunks | - PSTN connectivity issues - MGCP gateway troubleshooting - SIP trunk troubleshooting - H.323 gateway troubleshooting |
| Topic 5: Cisco Unity and Voice Applications | - Messaging service troubleshooting - Voicemail integration issues |
| Topic 6: Cisco Unified Communications Manager | - Dial plan troubleshooting - Device registration problems - Call processing issues |
| Topic 7: Quality of Service and Voice Quality | - QoS verification and troubleshooting - Voice quality diagnostics - Latency, jitter, and packet loss analysis |
| Topic 8: Troubleshooting Methodology | - Structured troubleshooting process - Log and trace analysis - Diagnostic tools and techniques |
Cisco Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0) Sample Questions:
What are the two most common causes of echo? (Choose two.)
- A. excessive packet loss
- B. signal reflection
- C. misconfigured tail circuits
- D. incorrect IP phone software loads
- E. impedance mismatch at the two-wire to four-wire hybrid
Correct Answer: B,E 🗳️
Refer to the exhibit.
When an HQ caller places a call to extension 4001 the phone at BR2 rings. Alter the user at BR2 goes off hook, the call is disconnected. Examine the debug voice ccapi coice inout command output. What caused this issue?
- A. The destination phone is not registered.
- B. The BR2 router does not have a matching inbound dial peer.
- C. The BR2 router is sending the call to dial-peer 20003 which is a POTS dial-peer.
- D. There is a codec mismatch between the source and destination. Codec negotiation failed
Correct Answer: D 🗳️
Explanation: Only visible for Pass4Leader members. You can sign-up / login (it's free).
Refer to the exhibit Which statement is true about the Cisco SAF Forwarder configuration on a Cisco Unified Communications Manager Express?
- A. The Cisco Communications Manager Express will be able to register with the Cisco SAF Forwarder, but an error message will be displayed regarding the missing trunk configuration
- B. The QSCC Unified Communications Manager Express will not be able to register with the Cisco SAF Forwarder because the trunk configuration under voice service saf is missing
- C. The Cisco Unified Communications Manager Express will be able to register with the Cisco SAF Forwarder
- D. The Cisco Unified Communications Manager Express will not be able to register with the Cisco SAF Forwarder because call control services not been configured
- E. The Cisco Unified Communications Manager Express will not be able to register with the Cisco SAF Forwarder because the service-family external-client configuration is missing.
Correct Answer: C 🗳️
Explanation: Only visible for Pass4Leader members. You can sign-up / login (it's free).
Refer to the exhibit. Assume a centralized Cisco Unified Communications Manager topology with the headquarters at RTP and remote located at the U.K. All route patterns are assigned a route list that points to the local route group. All device pools are configured to use the local route group. The RTP Device Pool uses the RTP gateway and the U.K. Device Pool uses the U.K. gateway.
When a U.K. user logs into an RTP phone using the Cisco Extension Mobility feature and places an emergency call to 0000, which statement about the emergency call is true?
- A. The call will match the RTP_Emergency route pattern partition and will egress at the RTP gateway.
- B. The call will match the U.K_Emergency route pattern partition and will egress at the U.K. gateway.
- C. The call will fail.
- D. The call will match the U.K_Emergency route pattern partition and will egress at the RTP gateway.
- E. The call will match the RTP_Emergency route pattern partition and will egress at the U.K. gateway.
Correct Answer: D 🗳️
Upon completion of a failover task you notice that all the CTI devices are still pointing to the backup server rather than the primary server. How should you resolve this issue?
- A. Restart the subscriber with the CTI Manager Service on the secondary.
- B. Do nothing and wait for the next failover assuming this will revert back to the primary CTI server.
- C. Stop the CTI Manager Service on the Secondary server so that all devices using CTI register with the primary.
- D. Stop the CTI Manager Service on the Primary server so that all devices using CTI stay registered with the primary CTI server.
Correct Answer: C 🗳️
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