Cisco 642-425 exam - in .pdf

642-425 pdf
  • Exam Code: 642-425
  • Exam Name: IP Telephony Troubleshooting
  • Updated: Oct 21, 2026
  • Q & A: 54 Questions and Answers
  • PDF Price: $49.99
  • PDF Demo

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  • Exam Code: 642-425
  • Exam Name: IP Telephony Troubleshooting
  • Updated: Oct 21, 2026
  • Q & A: 54 Questions and Answers
  • PDF Version + PC Test Engine + Online Test Engine
  • Value Pack Total: $99.98  $69.99
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Cisco 642-425 exam - Testing Engine

642-425 Testing Engine
  • Exam Code: 642-425
  • Exam Name: IP Telephony Troubleshooting
  • Updated: Oct 21, 2026
  • Q & A: 54 Questions and Answers
  • Software Price: $49.99
  • Testing Engine

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Cisco 642-425 Exam Syllabus Topics:

SectionObjectives
IP Phone and Endpoint Issues- IP phone registration and connectivity
  • 1. SCCP and SIP endpoint behavior
    • 2. DHCP, TFTP, and configuration files
      IP Telephony Troubleshooting Methodology- Structured troubleshooting approaches
      • 1. Analyzing call flow problems
        • 2. Isolation techniques for voice issues
          VoIP Protocol Troubleshooting- Signaling protocols
          • 1. SIP call flow analysis
            • 2. SCCP call control issues
              Cisco Unified Communications Manager (CUCM) Troubleshooting- Dial plan troubleshooting
              • 1. Partitions and calling search spaces
                • 2. Route patterns and translation patterns
                  - Call processing issues
                  • 1. Device registration problems
                    • 2. Call routing failures
                      Survivable Remote Site Telephony (SRST)- Failover scenarios
                      • 1. SRST activation and behavior
                        • 2. Branch site survivability troubleshooting
                          Messaging and Collaboration Services- Unity Connection / voicemail issues
                          • 1. Call forwarding and voicemail routing
                            Voice Gateways and PSTN Integration- Gateway configuration issues
                            • 1. Dial peers and call routing
                              • 2. ISDN and SIP trunk troubleshooting
                                Quality of Service (QoS)- Voice quality issues
                                • 1. Latency, jitter, and packet loss
                                  • 2. QoS policy verification

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