Cisco 642-414 real exam prep : Communications Telephony Design Exam

  • Exam Code: 642-414
  • Exam Name: Communications Telephony Design Exam
  • Updated: Jul 18, 2026
  • Q&As: 96 Questions and Answers

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Cisco 642-414 Exam Syllabus Topics:

SectionObjectives
Scalability and Deployment Design- Large-scale voice deployments
  • 1. Bandwidth planning and site sizing
    • 2. Distributed call processing models
      VoIP and Telephony Fundamentals- Voice codecs and compression
      • 1. QoS impact on voice quality
        • 2. G.711, G.729 and bandwidth considerations
          - Voice over IP protocols and signaling
          • 1. SIP, H.323, MGCP overview
            • 2. Call setup and teardown flows
              Cisco IP Telephony Architecture- Call processing design
              • 1. Clustering and redundancy design
                • 2. Cisco Unified Communications Manager (CUCM) architecture concepts
                  - Dial plan design
                  • 1. Numbering plans and route patterns
                    • 2. Class of Service and call routing logic
                      PSTN and Gateway Integration- PSTN connectivity design
                      • 1. PRI, SIP trunking, and analog integration
                        • 2. Call admission control concepts
                          Network Services for Voice- Resiliency and survivability
                          • 1. SRST (Survivable Remote Site Telephony)
                            • 2. Failover and redundancy strategies
                              - Quality of Service (QoS)
                              • 1. Traffic classification and marking (DSCP)
                                • 2. Queuing and congestion management

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