Cisco Voice over IP (CVOICE) : 642-436

  • Exam Code: 642-436
  • Exam Name: Cisco Voice over IP (CVOICE)
  • Updated: Aug 28, 2026
  • Q & A: 357 Questions and Answers

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Cisco 642-436 Exam Syllabus Topics:

SectionObjectives
Topic 1: Voice over IP Technologies- VoIP fundamentals
  • 1. Delay, jitter, and packet loss
  • 2. Compare PSTN and VoIP architectures
  • 3. Voice digitization and packetization
  • 4. Codecs and bandwidth calculations
Topic 2: Voice Gateways and Dial Plans- Gateway implementation
  • 1. Dial peers
  • 2. Call routing
  • 3. Digit manipulation
  • 4. Cisco voice gateway configuration
Topic 3: Quality of Service- QoS for voice traffic
  • 1. Classification and marking
  • 2. End-to-end voice quality optimization
  • 3. Queuing mechanisms
  • 4. Congestion avoidance
Topic 4: Media Resources- Voice media services
  • 1. Transcoding
  • 2. Conferencing
  • 3. Media termination functions
  • 4. DSP resources
Topic 5: Voice Security and Troubleshooting- Operations and maintenance
  • 1. Common VoIP troubleshooting techniques
  • 2. Performance monitoring
  • 3. Voice network security concepts
  • 4. Debug and verification commands
Topic 6: Signaling Protocols- Call signaling technologies
  • 1. SIP fundamentals
  • 2. H.323 fundamentals
  • 3. SCCP operation
  • 4. MGCP concepts

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