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Cisco 642-425 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Troubleshooting Methodology | 15% | - Using Cisco diagnostic tools - Systematic troubleshooting approach |
| CallManager & Unified CM Troubleshooting | 30% | - Call processing problems - Service activation and failures - Database replication issues |
| Gateway & DSP Troubleshooting | 20% | - DSP resource allocation - Analog and digital gateway issues - Signaling protocol errors |
| Signaling & Media Path Troubleshooting | 20% | - RTP stream and voice quality problems - H.323, SIP, MGCP protocol issues - Codec negotiation failures |
| IP Phone & Endpoint Troubleshooting | 15% | - Firmware and configuration download - VLAN and network connectivity - Phone registration and TFTP issues |




