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CCVP Gateway Gatekeeper Exam (GWGK) : 642-452 Exam

Exam Number/Code: 642-452
Exam Name: CCVP Gateway Gatekeeper Exam (GWGK)
VUE Code: 642-452
Questions Type: Single choice, Multiple choice, Simulate,
Question Numbers of Real-exam: 55-65 questions
Exam Language(s): English

“CCVP Gateway Gatekeeper Exam (GWGK)”, also known as 642-452 exam, is a Cisco certification.
Preparing for the 642-452 exam? Searching 642-452 Test Questions, 642-452 Practice Exam, 642-452 Dumps?

With the complete collection of questions and answers, Pass4sure has assembled to take you through 156 questions to your 642-452 Exam preparation. In the 642-452 exam resources, you will cover every field and category in CCVP helping to ready you for your successful Cisco Certification.

Gateway Gatekeeper Exam
Retired 4/26/07
Exam Number: 642-452
Associated Certifications: CCVP
Duration: 90 minutes (55-65 questions)
Available Languages: English
Click Here to Register: Pearson VUE or Prometric
Exam Policies: Read current policies and requirements
Exam Tutorial: Review type of exam questions

Exam Description Exam Topics Recommended Training Additional Resources
Exam Description

The Gateway Gatekeeper exam assesses the knowledge of the Systems Engineer on the implementation of Cisco gateways and gatekeepers to integrate a VoIP network to both PSTN and TDM equipment. This includes implementing dial plans and advanced gateway features such as SRST and DSP resources. The exam also covers implementing gatekeepers and directory gatekeepers to provide hierarchical dial plan resolution and call admission control.
Exam Topics
Explain the function and interoperation of Gateways within a converged network

* Compare and contrast the different protocols used on the Gateways, and the appropriate application of each protocol
* Explain the differences between the various Digital and Analog line protocols
* Describe and explain QSIG and its implementation
* Describe and explain drop and insert multiplexing features

Configure and implement DSP resources to support specified requirements

* Explain the capabilities and functions of a DSP resources
* Configure a DSP resources to support transcoding
* Configure a DSP resources to support conferencing

Explain the function and interoperation of Gatekeepers within a converged network

* Explain the function of Gatekeepers
* Explain the interoperation of a Gatekeeper and the call agent
* Describe and explain the Gatekeeper transaction message protocol and it’s usages

Determine the relevant technical and business needs that effect the choice of Gateway features, protocols and placement

* Select the correct placement of the Gateway within a given network topology to meet stated requirements
* Given different Telco and PBX system offerings, determine which Gateway services can be supported
* Select the correct protocol to support the required features (Fax relay, modem relay, pass-though, survivability, caller-ID, caller name display)

Determine the relevant technical and business needs that effect the choice of Gatekeeper features and placement

* Select the correct placement of the Gatekeeper within a given network topology to meet stated requirements
* Select the appropriate Gatekeeper functionality given stated business and technical requirements. (call admission control, dial-plan resolution)

Configure and implement a Gateway to interface with the PSTN

* Configure PRI connectivity (switch type, signaling)
* Configure BRI connectivity (switch type, signaling)
* Configure CAS connectivity ( feature group B and D, E1 R2)
* Configure Analog connectivity (loop and ground start, FXO, DID, FXS)
* Configure drop-and-insert feature
* Verify and troubleshoot configurations

Configure and implement a Gateway to interface with a PBX and voice mail system

* Configure analog connectivity (FXO, FXS, E&M types 1-4)
* Configure PRI connectivity (switch type, Qsig, signaling)
* Configure BRI connectivity (switch type, signaling)
* Configure CAS connectivity ( feature group B and D, E1 R2)
* Configure additional voicemail connectivity features (DTMF 4th column, etc)
* Configure IP circuit emulation feature
* Verify and troubleshoot configurations

Design and deploy a dial-plan to meet specific requirements

* Configure digit manipulation. (translation rules, number expansion)
* Design call routing scheme to meet technical and business requirements
* Configure alternate call routing. Based on resource availability or cost
* Implement and configure COR to meet business requirements
* Configure Gateway to use Gatekeeper for call resolution
* Configure call agent to use Gatekeeper for call resolution
* Verify and troubleshoot configurations

Implement extended services on the Gateway including Auto Attendant and Accounting/Billing

* Download TCL scripts
* Configure Auto Attendant using TCL scripts
* Describe TCL usages (Billing, Radius, AAA)

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Design and deploy redundant Gateway configurations to provide high availability

* Implement SRST on the Gateway
* Describe necessary physical connectivity requirements to support redundant gateways

Design and deploy redundant Gatekeeper configurations to provide high availability

* Configure HSRP between Gatekeeper devices
* Configure Gatekeeper clustering

Configure and implement Gateways and Gatekeepers within a managed services or service provider environment

* Determine when an IP-IP Gateway is necessary to meet technical and business requirements
* Configure IP-IP Gateways
* Describe and explain when the OSP protocol is necessary to meet technical requirements
* Contrast the Enterprise and Service Provider environments

QUESTION 21:
Exhibit
voice translation-rule 1
rule 1/^\(617\)\(…\)\(…\)//3\2\3/
What will be the result if the number 617-269-1212 is put through the Cisco IOS software voice
translation rule displayed in the exhibit?
A. 36172691212
B. 1212269
C. 32691212
D. 6171212
Answer: C
Explanation: In general form , rule precedence /match pattern/ /replacement pattern/ In the question,
1/^\(617\)\(…\)\(…\)/ /3\2\3/ is the given translation rule. Hence, Rule number : 1 match pattern :
^\(617\)\(…\)\(…\) replacement pattern: 3\2\3
The match pattern says that the rule will apply to any pattern begins with 617. The replacement pattern says add
digit 3 and insert set 2 and insert set 3 digits in the match pattern. In the question, the number given is
617-269-1212 . set 1 : 617 set 2 : 269 set 3 : 1212
Based on the replacement rule , the answer is C : 32691212.
QUESTION 22:
Which is a use of GKTMP?
A. updating information in directory gatekeepers
B. providing SIP to H.323 protocol translation for RAI in SIP networks
C. querying third-party applications to implement specific policy controls
D. transmitting state information to alternate gatekeepers for load balancing
Answer: C
Explanation: Gatekeeper Transaction Message Protocol (GKTMP) can extend the
call control intelligence of a gatekeeper by providing an interface to a route
application server where advanced routing decisions can be made. It converts
incoming RAS messages to text messages and sends them to an off-board server.
The server can override default gatekeeper behavior.
GKTMP is an independent platform and can run on Solaris, Linux, Microsoft Windows
NT. It allows third parties to develop sophisticated applications to control RAS
communication. An example of the use of GKTMP is where a service provider wants to
control the call routing behavior of certain calls during a certain time of the day. The
gatekeeper in this case will offload the routing instructions to the route application server
and process the request from the server for altered call routing behavior.
Implementing Cisco Voice Gateways and Gatekeepers (GWGK) v1.0
pg 5-4 Deploying Gatekeepers
QUESTION 23:
Drag and drag the commands to the proper location. Each command may be used either in the interface
or the gatekeeper configurations, or in both. All boxes may not be filled and commands may be used
more than once. The IP address command has been entered for you.
Answer:
Explanation: The primary gatekeeper will contain the following configuration on
the ethernet interface.
interface ethernet 0
ip address 10.1.1.1 255.255.255.0
stanby 1 ip 10.1.1.10
standby 1 preempt
standby 1 timers 5 15
standby 1 priority 110
no shutdown
Though not shown in the list of commands to choose, the timers are very important, if the
values are not sent to the same number in both routers, HSRP will not function properly.
This router will be the priority gatekeeper for HSRP because of the standby 1 priority
110 statement. The default value is 100 in a range from 1 to 255. The standby router
(alternate) will not need to have the standby priority statement. The standby router
(alternate) assumes the default priority of 100, meaning the primary gatekeeper is the one
set with the higher priority at 110.
The gatekeeper mode will contain the following configuration:
gatekeeper
zone local GK- Certkiller A Certkiller .com 10.1.1.10
zone remote GK- Certkiller C Certkiller .com 10.1.20.10 1719
zone prefix GK- Certkiller A 408
zone prefix GK- Certkiller C 425
no shutdown

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