Try Cisco : 642-436 valid & accurate questions and answers
Updated: Sep 13, 2026
No. of Questions: 357 Questions & Answers with Testing Engine
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Cisco 642-436 Exam Overview:
| Certification Vendor: | Cisco |
|---|---|
| Exam Name: | Cisco Voice over IP (CVOICE) |
| Exam Number: | 642-436 |
| Related Certifications: | CCNA Voice CCNP Voice CCVP |
| Exam Price: | $200 USD |
| Exam Format: | Multiple choice single/multiple answer, Simulations, Drag-and-drop |
| Exam Duration: | 75 minutes |
| Available Languages: | Chinese, Japanese, English |
| Certificate Validity Period: | 3 years |
| Real Exam Qty: | 60-70 |
| Passing Score: | 750 / 1000 |
| Recommended Training: | CVOICE Cisco Voice over IP Official Course CVOICE Authorized Self-Study Guide |
| Exam Registration: | Pearson VUE Registration |
| Sample Questions: | Cisco 642-436 Sample Questions |
| Exam Way: | Online proctored or onsite at Pearson VUE test centers |
| Pre Condition: | CCNA-level networking knowledge or equivalent experience; recommended CCNA certification |
| Official Syllabus URL: | https://www.cisco.com/c/en/us/training-events/training-certifications/exams/retired/642-436.html |
Cisco 642-436 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Dial Plan Implementation | 25% | - Digit manipulation and path selection - Numbering plan and dial peer concepts - Calling privileges and hunt groups - Dial plan verification and troubleshooting |
| Topic 2: IP-to-IP Gateway (Cisco UBE) | 15% | - IP-to-IP gateway functionality - Protocol interworking and media flow - Configuration and verification - Call routing and admission control |
| Topic 3: VoIP Fundamentals | 20% | - QoS requirements for voice traffic - Signaling protocols: H.323, SIP, MGCP, SCCP - RTP, RTCP, cRTP media transport - Voice digitization, packetization and codecs - Traditional telephony and VoIP architecture |
| Topic 4: Cisco IOS Gateways | 25% | - PSTN and PBX integration - DTMF relay, fax and modem support - Analog and digital voice interfaces - Gateway components and DSP resources |
| Topic 5: Gatekeeper Deployment | 15% | - Gatekeeper redundancy and verification - Call admission control and routing - Gatekeeper functions and components - Zone management and endpoint registration |
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