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Cisco 642-427 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Voice Gateway and Protocol Troubleshooting | - Signaling protocols
|
| Cisco Unified Communications Architecture Troubleshooting | - Cluster and server health issues
|
| Voicemail and Unified Messaging | - Cisco Unity Connection troubleshooting
|
| Endpoints and Registration Issues | - Endpoint performance issues
|
| QoS and Network Integration | - Voice quality issues
|
| Call Control and Dial Plan Troubleshooting | - Call routing failures
|
Cisco Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0) Sample Questions:
Which of the following describes SIP Early Offer?
- A. In SIP Early Offer mode, the SDP media capabilities are sent in the INVITE message calling device.
- B. Early Offer always uses session indicator 183
- C. In SIP Early Offer mode, the INVITE and the 200 OK messages use non-SDP message format to indicate SIP Early Offer
- D. In SIP Early Offer mode, the SDP media capabilities are sent in the 200 OK messages of the calling device.
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Refer to the exhibit. You have received a trouble ticket that users cannot place calls to the PSTN. During testing you discover the gateway is not switching to the secondary call agent when the primary call agent is unreachable.
What needs to be done to allow the MGCP gateway to use a different call agent if the primary fails?
- A. The ccm-manager fallback-mgcp command needs to be added to the gateway.
- B. A Cisco Unified CallManager group that includes the secondary call agent needs to be assigned to the gateway.
- C. The gateway needs to be defined as a non-gatekeeper-controlled intercluster trunk with the secondary Cisco Unified CallManager defined.
- D. The ccm-manager redundant-host command needs to be added to the gateway.
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Refer to Exhibit.
Assume that all learned SAF routes are placed in the SAF_Pt partition.
The 3XXXdirectory number pattern is being advertised by a remote cluster and is also being blocked by the local cluster that is shown in the exhibit. An IP Phone is attached to the local cluster and is configured with a CSS that contains the following partitions: SAF_Pt and internal_Pt in this order. When the IP phone places a call to 3001, what will occur?
- A. The call will fail because it will be blocked by the CCO blocked Learned Route configuration.
- B. The call will succeed and will be placed via the SIP_Trunk.
- C. The Call will be placed in a round-robin fashion between the SAF network and SIP_trunk.
- D. The Call will be placed in a round -robin fashion between the SAF network and SIP network and SIP_Trunk Every other call will fail.
Please make the correct selection order for inbound POTS calls.
1.default dial peer
2.DNS with incoming called-number
3.ANI with destination pattern
4.originating voice port with configured dial peer port
5.ANI with answer address
- A. 3 > 5 > 2 > 4 > 1
- B. 2 > 3 > 5 > 4 > 1
- C. 2 > 5 > 3 > 4 > 1
- D. 1 > 3 > 5 > 4 > 2
The following is a partial configuration of an access layer switch:
mls qos map cos-dscp 0 8 12 16 28 32 40 48
mls qos
!
Voice bearer traffic will be set to use which per-hop behavior?
- A. AF12
- B. EF
- C. BE
- D. AF32
- E. CS4
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