Cisco 642-414 Exam Information and Actual Questions

Exam Questions: 96
Updated On: Jul 19, 2026

642-414
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Certification Vendor:	Cisco
Exam Name:	Cisco Communications Telephony Design Exam
Exam Number:	642-414
Exam Format:	Multiple choice, Scenario-based questions
Related Certifications:	Cisco Certified Design Professional (CCDP) Cisco Voice and Unified Communications certifications
Available Languages:	English
Certificate Validity Period:	Retired
Sample Questions:	Cisco 642-414 Sample Questions
Exam Way:	Proctored Cisco certification exam (legacy design-focused voice certification; retired)
Pre Condition:	Recommended knowledge of Cisco networking fundamentals and voice/telephony systems design principles
Official Syllabus URL:	https://www.cisco.com

Section	Objectives
Topic 1: VoIP and Telephony Fundamentals	- Voice over IP architecture and protocols (SIP, H.323, MGCP) - Traditional PSTN vs IP telephony concepts
Topic 2: Telephony Infrastructure Design	- Gateway and trunk design (SIP trunks, PSTN gateways) - Redundancy and high availability planning
Topic 3: Security and Troubleshooting	- Voice security considerations (encryption, authentication) - Common telephony design troubleshooting scenarios
Topic 4: Scalability and Deployment Planning	- Distributed vs centralized deployment models - User and device capacity planning
Topic 5: Cisco Unified Communications Design	- Dial plan design and call routing strategies - Cisco Unified Communications Manager (CUCM) architecture
Topic 6: Network Design for Voice	- Quality of Service (QoS) for voice traffic - Bandwidth provisioning and traffic engineering