Tag: 642-452

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Exam A
QUESTION 1
Refer to the exhibit. Highland Park Property Development is integrating a Cisco CallManager system with the existing PBX via an E1 QSIG trunk. After the initial configuration, no calls can be placed from IP phones to PBX phones. How can this problem be resolved?

A. Add the command isdn contiguous-bchan to the serial interface.
B. Change the channel selection order from descending to ascending.
C. Add the command isdn negotiate-bchan to the serial interface.
D. Increase the ISDN T302 timer to allow more time for call setup.
Correct Answer: C Section: (none) Explanation
Explanation/Reference:
QUESTION 2
Drag Drop question

A.
B.
C.
D.
Correct Answer: Section: (none) Explanation
Explanation/Reference:
Answer: Check certifyme eEngine, Download from Member Center
QUESTION 3
Which dial peer will send calls to the PSTN via the CAS T1 using this controller configuration?controller t1 3/0framing esflinecode b8zsds0-group 1 timeslots 1-24 type e&m-wink-start
A. dial-peer voice 1 potsdestination-pattern 9.@port 3/0:1
B. dial-peer voice 1 potsdestination-pattern 9.@port 3/0:24
C. dial-peer voice 1 potsdestination-pattern 91port 3/0:1
D. dial-peer voice 1 potsdestination-pattern 91port 3/0:24
Correct Answer: C Section: (none) Explanation
Explanation/Reference:
QUESTION 4
Which three features are available during SRST failover? (Choose three.)
A. music on hold
B. IP phone speed dial
C. distinctive ring
D. call forwarding
Correct Answer: ABC Section: (none)Explanation
Explanation/Reference:
QUESTION 5
Refer to the exhibit. What is the purpose of the TCL script snippet?

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Exam A
QUESTION 1
Which two functions are provided by a DSP farm? Select two.
A. called ID
B. transcoding
C. E911
D. directory lookup
E. conference bridging
F. music on hold

Correct Answer: BE Section: (none) Explanation
Explanation/Reference:
Explanation: The DSP farm uses the DSP resources in network modules on Cisco routers to provide voice-conferencing, transcoding, and hardware MTP services. Implementing Cisco Voice Gateways and Gatekeepers (GWGK) v1.0 pg 4-56 Implementing Advanced Gateway Features
QUESTION 2
DRAG DROP

A.
B.
C.
D.

Correct Answer: Section: (none)
Explanation

Explanation:
Why Choose H.323

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Integrated access

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Caller ID support on analog FXO

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Many more TDM interface types and signaling

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Dropping DSPs on hairpinned calls

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Gateway-resident applications like TCL and VXML

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CAC network design with H.323 gatekeepers

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No release dependencies between gateways and Cisco CallManager

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Much easier migration architecture to SIP

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Call preservation for Cisco SRST

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NFAS support Implementing Cisco Voice Gateways and Gatekeepers (GWGK) v1.0 pg 1-66 Function of Gateways and Gatekeepers Using MGCP as the call control protocol to a gateway has the following advantages:

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Centralized configuration, control and download from Cisco CallManager

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Better feature interaction with capabilities like caller ID and name display

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Easy, centralized dial-plan management

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Gateway voice security features (voice encryption) as of Cisco IOS Software Release 12.3.(5th)T

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Q Signaling (QSIG) supplementary services as supported by Cisco CallManager:
-Cisco CallManager interconnects to a QSIG network using an MGCP gateway and T1 or E1 PRI connections to a private integrated services network (PISN). The MGCP gateway establishes the call connections. Using the PRI backhaul mechanism, the gateway passes the QSIG messages to the Cisco CallManager to set up QSIG calls and send QSIG messages to control features.

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