Cisco 642-457 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Bandwidth Management & Call Admission Control | 20% | - Gatekeeper-based CAC - Automated Alternate Routing (AAR) - Media resources: MTP, transcoders, conferencing, MOH - RSVP agents and SIP precondition - Regions and locations configuration |
| Topic 2: Mobility Features | 15% | - Device Mobility configuration - Mobility features verification - Extension Mobility implementation |
| Topic 3: Multisite Dial Plan Implementation | 25% | - Local Route Groups and global transformations - Tail-End Hop-Off (TEHO) and PSTN backup - Globalized call routing and E.164 dialing - Partition, CSS, and numbering plan design |
| Topic 4: Call Survivability & Redundancy | 20% | - Centralized call processing redundancy - SRST and CUCM Express survivability - Failover and fallback verification - MGCP fallback configuration |
| Topic 5: Multisite CUCM Infrastructure & Trunks | 20% | - Configure intercluster trunks and call control discovery - Implement H.323, MGCP, and SIP gateways - SAF Forwarder and SAF CCD implementation - Multisite architecture and connectivity options |
Cisco Implementing Cisco Unified Communications Manager, Part 2 v8.0 (CIPT2 v8.0) Sample Questions:
1. Refer to the exhibit.
IT shows an H.323 gateway configuration in a Cisco Unified Communications Manager environment. An inbound PSTN call to this H.323 gateway fails to connect to IP phone extension 2001. The PSTN user hears a reorder tone. Debug isdn q931 on the H.323 gateway shows the correct called-party number as 5015552001. Which two configuration changes can correct this issue? (Choose two.)
A) Ensure that the Significant Digits for inbound calls on the H.323 gateway configuration is
4.C. Add a voice translation profile to truncate the number from 10 digits to 4 digits. Apply the voice translation profile to the Voice-port. The configuration field "Significant Digits for inbound calls" is left at default (All).
B) Change the destination-pattern on the dial-peer voice 23000 VoIP to 501501? and change the Significant Digits for inbound calls to 4.
C) Add the command h323-gateway voip id on interface vlan120.
D) Add port 1/0:23 to dial-peer voice 123 pots.
2. How can the location setting be modified to resolve poor call quality?
A) Remove the audio bandwidth setting
B) Mark the bandwidth between the locations as unlimited
C) No adjustment to location setting is needed
D) Decrease the audio bandwidth setting
3. Refer to the exhibit.
What should the destination IP address be configured as on the HQ and BR1 SIP trunks?
A) The HQ SIP trunk destination IP address should be the HQ SAF Forwarder IP address.
The BR1 SIP trunk destination IP address should be the BR1 SAF Forwarder IP address.
B) The destination IP address will be learned automatically and configured on the SIP trunks after the Cisco Unified Communications Managers discover themselves.
C) The HQ SIP trunk destination IP address should be 10.1.6.10. The BR1 SIP trunk destination IP address should be 10.1.5.10.
D) The destination IP address is not configurable. Each cluster will learn about the remote trunk IP address through SAF learned routes.
4. Refer to the exhibit.
The exhibit shows centralized Cisco Unified Communications Manager configuration components for TEHO calls to U.S. area code 408 from the U.K. The PSTN access code for the U.K. is 9 and 001 for international calls to the U.S. Assuming the PSTN does not accept globalized numbers with + prefix. What should the Called Party Transformation Pattern at the U.S. gateway be configured as?
A) \+1408.! with the following Called Party Transformation: Discard Digits PreDot Prefix Digits Outgoing Calls: None
B) \+.! with the following Called Party Transformation:
Discard Digits PreDot
Prefix Digits Outgoing Calls: +
C) \+1.408! with the following Called Party Transformation: Discard Digits PreDot Prefix Digits Outgoing Calls: None
D) \+1.! with the following Called Party Transformation: Discard Digits PreDot Prefix Digits Outgoing Calls: None
E) \+408.! with the following Called Party Transformation: Discard Digits PreDot Prefix Digits Outgoing Calls: 1
5. When an incoming PSTN call arrives at an H.323 gateway, how does the called number get normalized to an internal directory number in Cisco Unified Communications Manager?
A) Normalization is done using the gateway incoming calling party prefixes based on number type.
B) Normalization is achieved by local route group that is assigned to the H.323 gateway.
C) Normalization is done using route patterns.
D) Normalization is done by configuring the significant digits for inbound calls on the H.323 gateway configuration in Cisco Unified Communications Manager.
Solutions:
| Question # 1 Answer: A,B | Question # 2 Answer: D | Question # 3 Answer: D | Question # 4 Answer: A | Question # 5 Answer: D |
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