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Cisco 642-457 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Bandwidth Management & Call Admission Control | 20% | - Media resources: MTP, transcoders, conferencing, MOH - RSVP agents and SIP precondition - Automated Alternate Routing (AAR) - Regions and locations configuration - Gatekeeper-based CAC |
| Topic 2: Mobility Features | 15% | - Mobility features verification - Extension Mobility implementation - Device Mobility configuration |
| Topic 3: Multisite Dial Plan Implementation | 25% | - Globalized call routing and E.164 dialing - Partition, CSS, and numbering plan design - Local Route Groups and global transformations - Tail-End Hop-Off (TEHO) and PSTN backup |
| Topic 4: Multisite CUCM Infrastructure & Trunks | 20% | - SAF Forwarder and SAF CCD implementation - Implement H.323, MGCP, and SIP gateways - Multisite architecture and connectivity options - Configure intercluster trunks and call control discovery |
| Topic 5: Call Survivability & Redundancy | 20% | - Failover and fallback verification - Centralized call processing redundancy - SRST and CUCM Express survivability - MGCP fallback configuration |
Cisco Implementing Cisco Unified Communications Manager, Part 2 v8.0 (CIPT2 v8.0) Sample Questions:
Which option configures the secondary dial tone option for SRST mode to let the users hear the dial tone for PSTN calls?
- A. ccm-manager secondary dialtone 0
- B. call-manager-fallback secondary dialtone 0
- C. dial-peer voice 1 pots secondary dialtone 0
- D. voice service voip secondary dialtone 0
Correct Answer: B 🗳️
Which three of the following are steps in configuring MGCP Fallback and Cisco Unified SRST? (Choose three)
- A. Enable and configure the MGCP fallback and Cisco Unified SRST features on the IOS gateways.
- B. Implement a simplified SRST dial plan on the remote-site-gateways to ensure connectivity for remote-site phones in SRST mode.
- C. Define the SRST reference for phones in the Device Pool configuration
- D. Enable and configure the MGCP fallback on the IOS gateway but not Cisco Unified SRST since it is enabled automatically.
- E. Enable SIP trunking between both remote and hub sites to provide mesh coverage.
- F. Define the SRST reference in the configuration on the IP Phones.
Correct Answer: A,B,C 🗳️
Which configuration command disables the secondary dial tone on the branch office ISR for users calling from the PSTN into the branch office during a WAN failure?
- A. voice translation-rule
- B. direct-inward-dial
- C. application
- D. incoming called-number
Correct Answer: B 🗳️
Assume that local route groups are configured. When an IP phone moves from one device mobility group to another, which two configuration components are not changed? (Choose two.)
- A. phone button settings
- B. SRST reference
- C. IP subnet
- D. user settings
- E. region
Correct Answer: A,D 🗳️
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