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Exam: 642-453

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Vendor Cisco
Certification IP-Communications/CCVP
Exam Code 642-453
Exam Title Gateway Gatekeeper
No. of Questions 99
Last Updated 07/01/2021
Product Type Q & A with Explanation
Question & Answers Download
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642-453 Gateway Gatekeeper
Gateway Gatekeeper Exam

Associated Certifications: CCVP

Exam Description
The Gateway Gatekeeper 642-453 GWGK is the exam associated with the CCVP certification. Candidates can prepare for this exam by taking the Gateway Gatekeeper (GWGK) course. This exam tests a candidate's knowledge of the implementation of Cisco gateways and gatekeepers, including integration of a VoIP network to both PSTN and TDM equipment. Topics covered include implementing dial plans and advanced gateway features such as SRST and DSP resources, implementing gatekeepers and directory gatekeepers to provide hierarchical dial plan resolution, and call admission control.

Exam Topics
The following information provides general guidelines for the content likely to be included on this exam. However, other related topics may also appear on any specific delivery of the exam. In order to better reflect the contents of the exam and for clarity purposed the guidelines below may change at any time without notice.

Explain the function and interoperation of voice & video Gateways within an IP Communications network
* Identify and describe the appropriate gateway signaling protocol to meet requirements
* Identify and describe the appropriate digital line protocol to meet requirements
* Identify and describe the appropriate analog line protocol to meet requirements
* Describe the appropriate implementation of drop and insert multiplexing
* Describe DSP functionality
* Describe the different methods of provides fax and modem support

Describe the function and interoperation of Gatekeepers within an IP Communications network
* Describe the function of Gatekeepers
* Describe the interoperation of a Gatekeeper and a Cisco Unified CallManager
* Describe the Gatekeeper Transaction Message Protocol and how it is used
* Describe Dynamic Zone Prefix Registration with a Gatekeeper
* Describe Gatekeeper clustering

Implement a Gatekeeper
* Implement and Configure Gatekeeper to provide call admission control
* Implement and Configure Gatekeeper to provide dial-plan resolution
* Configure a Directory Gatekeeper to provide scalability
* Implement and Configure redundancy between Gatekeeper devices
* Implement and Configure Gatekeeper clustering
* Configure a Gateway to register with a Gatekeeper
* Configure a Cisco Unified CallManager to register with a Gatekeeper
* Verify and troubleshoot Gatekeeper implementations

Implement a Gateway
* Configure and verify PRI connectivity
* Configure and verify BRI connectivity
* Configure and verify CAS connectivity
* Configure and verify Analog connectivity
* Implement SRST to provide High Availability
* Implement media resources on a Gateway
* Implement fax and modem support on a Gateway
* Configure a Gateway to provide DTMF support
* Configure a Gateway to be usable by a Cisco Unified CallManager

Implement a dial-plan
* Describe the components of a dial-plan
* Configure digit manipulation
* Implement call routing
* Implement COR
* Describe how the Gateway matches dial-peers
* Verify and troubleshoot dial-plan implementations

Implement call applications on a Gateway
* Describe how to obtain call applications
* Configure call applications on a Gateway
* Verify and troubleshoot call application implementations

Implement an IP-to-IP Gateway
* Describe the IP-to-IP Gateway features and functionality
* Configure Gatekeeper to support an IP-to-IP Gateway
* Configure IP-to-IP Gateway to provide security
* Configure IP-to-IP Gateway to provide protocol and media interworking
* Configure IP-to-IP Gateway to provide call admission control
* Verify and troubleshoot IP-to-IP Gateway implementations


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