Cisco 642-453 : Gateway Gatekeeper Exam (GWGK)

Exam Code: 642-453

Exam Name: Gateway Gatekeeper Exam (GWGK)

Updated: Aug 31, 2026

Q & A: 105 Questions and Answers

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Cisco 642-453 Exam Syllabus Topics:

SectionWeightObjectives
Implementing Gatekeepers30%- Call Admission Control (CAC)
- Directory gatekeepers and hierarchical dial plans
- Zone configuration and endpoint registration
- Tech prefixes and E.164 resolution
Gateway and Gatekeeper Overview15%- Converged network architecture
- Gatekeeper functions and H.323 standards
- Gateway protocols: H.323, MGCP, SIP
Implementing Voice Gateways30%- DSP resources and codec configuration
- SRST and gateway survivability
- PSTN and TDM integration
- Dial peers and call routing
Advanced Features and Troubleshooting25%- COR and call restriction policies
- Monitoring and debugging tools
- Transcoding and conferencing
- Interoperability with CUCM and PBX

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