Cisco 642-437 Exam Information and Actual Questions

  • Exam Code/Number: 642-437
  • Exam Name/Title: Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0)
  • Certification Provider: Cisco
  • Corresponding Certification: CCNP
  • Exam Questions: 257
  • Updated On: Jul 17, 2026

642-437
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Cisco
642-437 Exam
Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0)

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Cisco 642-437 Exam Overview:

Certification Vendor:Cisco Systems
Exam Name:Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0)
Exam Number:642-437
Exam Duration:90 minutes
Available Languages:English
Certificate Validity Period:Retired
Real Exam Qty:55-65
Exam Format:Multiple choice, Simulations / Simlets (legacy Cisco exam format)
Related Certifications:Cisco Certified Voice Professional (CCVP)
Cisco Certified Network Professional (CCNP) Voice
Cisco Unified Communications certification track
Sample Questions:Cisco 642-437 Sample Questions
Exam Way:Proctored exam delivered via Pearson VUE test centers or online proctoring (depending on availability at time of offering; exam is retired).
Pre Condition:Recommended experience with Cisco networking fundamentals; often aligned with CCNA-level knowledge or Cisco voice track prerequisites.

Cisco 642-437 Exam Syllabus Topics:

SectionObjectives
Troubleshooting and Operations- Voice and QoS troubleshooting methodologies
- Common VoIP deployment issues
Signaling and Call Control- Gateways and gatekeepers
- SIP, H.323, and MGCP protocols
- Dial plans and call routing
VoIP Fundamentals- Voice over IP architecture and components
- Voice traffic signaling basics
- Voice codecs and compression techniques
Call Admission Control and Performance- Call admission control mechanisms
- Voice network performance considerations
Quality of Service (QoS)- Congestion management and avoidance
- Traffic classification and marking
- Queuing techniques and bandwidth management
- QoS models and mechanisms


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