Exam Code: 642-452

Course Name: Gateway Gatekeeper Exam (GWGK)

Vendor: Cisco

Passing Score: 700

642-452 is the most important certification from the Cisco. Cisco offers this certification for the people who want to develop their technical skills and knowledge of the Cisco gateways and Cisco gatekeepers. Cisco 642-452 is the best option for the people who want to make their career in the Cisco advanced products and technologies. Cisco 642-452 or Gateway Gatekeeper certification exam covers the core topics of the gateways such as implementation of the gateways to combine a VOIP networks and also covers the advanced topics of the Cisco gateways.

The 642-452 exam describes the implementation of dial plans and advanced gateway features such as SRST and DSP resources and also covers implementing gatekeepers and directory gatekeepers to provide hierarchical dial plan resolution and call admission control. It also enables you to describe and identify network accessories offered by Cisco. Moreover, by passing 642-452 exam you can explain the function and interoperation of Gateways within a converged network, and configure and implement DSP resources to support specified requirements. In order to be able to determine the relevant technical and business needs that take effect the choice of Gatekeeper features and placement, and configure and implement a Gateway to interface with the PSTN, you must take the 642-452 exam. As a 642-452 certified professional, you can configure and implement Gateways and Gatekeepers within a managed services or service provider environment.

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Course Outline: Gateway Gatekeeper Exam (GWGK)

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