642-452
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642-452 GWGK
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)
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
Recommended Training
Implementing Cisco Voice Gateways and Gatekeepers (GWGK) is the recommended training for this exam.
Courses listed are offered by Cisco Learning Partners, the only authorized source for Cisco IT training delivered exclusively by Certified Cisco Instructors. Check the List of Learning Partners for a Cisco Learning Partner near you.
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