Cisco 642-104 : Unified Communication for System Engineers Exam

  • Exam Code: 642-104
  • Exam Name: Unified Communication for System Engineers Exam
  • Updated: Aug 28, 2026   Q&As: 70 Questions and Answers

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Cisco 642-104 Exam Syllabus Topics:
SectionObjectives
Voice Gateway and PSTN Integration- Gateway configuration and protocols
  • 1. SIP, H.323, MGCP concepts
    • 2. PSTN connectivity and call routing
      Call Control and Dial Plan- Dial plan design and implementation
      • 1. Numbering plans and call routing logic
        • 2. Route patterns and translation patterns
          Cisco Unified Communications Architecture- UC architecture components and design principles
          • 1. Unified Communications Manager (CUCM) overview
            • 2. IP telephony architecture models
              Quality of Service (QoS) for Voice- QoS mechanisms and design
              • 1. Latency, jitter, and packet loss handling
                • 2. Traffic classification and prioritization
                  Troubleshooting and Maintenance- UC system troubleshooting
                  • 1. Call failure analysis
                    • 2. Device registration and signaling issues
                      Messaging and Collaboration Services- Voicemail and unified messaging
                      • 1. Cisco Unity Connection integration
                        • 2. Call forwarding and voicemail routing
                          Cisco Unified Communications Manager (CUCM)- CUCM configuration and administration
                          • 1. User and endpoint management
                            • 2. Device configuration (phones, gateways, trunks)

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