642-425 Exam Dumps
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| Certification Provider: | Cisco |
|---|---|
| Exam Code / Number: | 642-425 |
| Exam Name: | IP Telephony Troubleshooting |
| Exam Questions: | 54 |
| Last Updated: | Jul 23, 2026 |
| Corresponding Certification: | CCVP |
This exam has been stopped to register, new exam code replace: 642-426
Cisco 642-425 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: IP Phone & Endpoint Troubleshooting | 15% | - Firmware and configuration download - Phone registration and TFTP issues - VLAN and network connectivity |
| Topic 2: CallManager & Unified CM Troubleshooting | 30% | - Call processing problems - Database replication issues - Service activation and failures |
| Topic 3: Signaling & Media Path Troubleshooting | 20% | - RTP stream and voice quality problems - H.323, SIP, MGCP protocol issues - Codec negotiation failures |
| Topic 4: Gateway & DSP Troubleshooting | 20% | - Analog and digital gateway issues - DSP resource allocation - Signaling protocol errors |
| Topic 5: Troubleshooting Methodology | 15% | - Using Cisco diagnostic tools - Systematic troubleshooting approach |