Cisco Gateway Gatekeeper Exam (GWGK) : 642-453

642-453 real exams

Exam Code: 642-453

Exam Name: Gateway Gatekeeper Exam (GWGK)

Updated: Sep 12, 2026

Q & A: 105 Questions and Answers

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Cisco 642-453 Exam Syllabus Topics:

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