Cisco 642-143 Exam Information and Actual Questions

Exam Questions: 65
Updated On: Sep 06, 2026

642-143
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Certification Vendor:	Cisco
Exam Name:	Communications IP Telephony Express Exam (IPTX)
Exam Number:	642-143
Real Exam Qty:	65-75
Certificate Validity Period:	Retired
Passing Score:	Approx 80-85% / Not Officially Disclosed
Exam Format:	Multiple Choice, Drag and Drop, Simulation
Exam Duration:	90 minutes
Available Languages:	English
Exam Price:	USD 150-250
Recommended Training:	IP Telephony Express (IPTX) Official Course
Exam Registration:	Pearson VUE Prometric
Sample Questions:	Cisco 642-143 Sample Questions
Exam Way:	Proctored onsite at authorized test centers
Pre Condition:	No formal prerequisites; basic knowledge of IP networking and telephony recommended
Official Syllabus URL:	https://www.cisco.com/web/RU/learning/le3/current_exams/642-143.html

Section	Weight	Objectives
Topic 1: Cisco Unified Communications Architecture	25%	- Analog and digital gateways, ATA, FXS/FXO interfaces - Call control and signaling protocols: SCCP, SIP - Overview of Cisco small-to-medium business voice solutions
Topic 2: VoIP and PSTN Fundamentals	25%	- Traditional telephony infrastructure: PBX, trunks, signaling - SIP protocol basics and architecture - Codecs, voice quality, and QoS factors - Basic VoIP and PSTN components and technologies
Topic 3: Cisco Unity Express	20%	- Voicemail, auto-attendant, and user configuration - Administration, backup, and troubleshooting - Installation and integration with CUCME
Topic 4: Cisco Unified CallManager Express (CUCME)	30%	- System management, monitoring, and troubleshooting - Configuration of endpoints, phones, dial plans - Trunking, call routing, and telephony features - Installation and initial setup