Instantly download 642-425 updated real questions
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Updated: Oct 16, 2026
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Cisco 642-425 Exam Overview:
| Certification Vendor: | Cisco |
|---|---|
| Exam Name: | Cisco IP Telephony Troubleshooting (IPTT) |
| Exam Number: | 642-425 |
| Real Exam Qty: | Approximately 55–65 |
| Available Languages: | English |
| Exam Price: | USD 250 (historical, varies by region and time) |
| Exam Duration: | 90 minutes |
| Related Certifications: | Cisco CCNP Voice Cisco CCNA Voice |
| Certificate Validity Period: | 3 years (historical Cisco certification validity policy; legacy track) |
| Exam Format: | Multiple choice, Multiple answer, Simulations / troubleshooting scenarios |
| Recommended Training: | Cisco IP Telephony troubleshooting training (legacy CCNP Voice track) |
| Exam Registration: | Pearson VUE Cisco Exams Cisco Certification Registration |
| Sample Questions: | Cisco 642-425 Sample Questions |
| Exam Way: | Proctored exam via Pearson VUE test centers or online proctoring (historical delivery for Cisco certification exams) |
| Pre Condition: | Recommended: Cisco CCNA Voice or equivalent knowledge of IP telephony and networking fundamentals |
| Official Syllabus URL: | https://www.cisco.com/c/en/us/training-events/training-certifications/certifications.html |
Cisco 642-425 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Cisco Unified Communications Manager (CUCM) Troubleshooting | - Dial plan troubleshooting
|
| Quality of Service (QoS) | - Voice quality issues
|
| Voice Gateways and PSTN Integration | - Gateway configuration issues
|
| IP Telephony Troubleshooting Methodology | - Structured troubleshooting approaches
|
| Survivable Remote Site Telephony (SRST) | - Failover scenarios
|
| IP Phone and Endpoint Issues | - IP phone registration and connectivity
|
| VoIP Protocol Troubleshooting | - Signaling protocols
|
| Messaging and Collaboration Services | - Unity Connection / voicemail issues
|
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