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Updated: Sep 14, 2026

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Nortel 920-180 Exam Overview:

Certification Vendor:Nortel Networks
Exam Name:NCTS Real-Time Networking
Exam Number:920-180
Real Exam Qty:50-70 (varies by version)
Certificate Validity Period:Retired / no longer actively maintained (historical certification)
Passing Score:Unknown / Not publicly disclosed
Exam Price:Varies by region and testing provider (typically USD 125–250 equivalent)
Available Languages:English
Exam Duration:90-120
Exam Format:Scenario-based questions, Multiple choice
Related Certifications:Nortel Certified Technology Specialist (NCTS)
Sample Questions:Nortel 920-180 Sample Questions
Exam Way:Computer-based testing at authorized exam centers (historical Nortel certification delivery)
Pre Condition:Recommended knowledge of TCP/IP networking, basic routing/switching, and enterprise voice systems
Official Syllabus URL:https://www.nortel.com

Nortel 920-180 Exam Syllabus Topics:

SectionObjectives
Enterprise Voice Networking- Call control and signaling
  • 1. Call setup and teardown processes
    • 2. Gateways and gatekeepers
      - Network design considerations
      • 1. VLAN design for voice traffic
        • 2. LAN/WAN voice integration
          Troubleshooting and Network Management- Fault diagnosis
          • 1. VoIP call failure troubleshooting
            • 2. Network configuration issues
              - Performance monitoring
              • 1. Delay, jitter, and packet loss analysis
                • 2. Call quality metrics
                  Real-Time Networking Fundamentals- IP networking fundamentals
                  • 1. IPv4 addressing and subnetting basics
                    • 2. Routing and switching principles
                      - Packet-based voice and data convergence concepts
                      • 1. Circuit vs packet switching overview
                        • 2. Latency, jitter, and packet loss concepts
                          Voice over IP (VoIP) Technologies- VoIP protocols
                          • 1. H.323 architecture overview
                            • 2. SIP signaling fundamentals
                              - Media transport
                              • 1. RTP/RTCP operation
                                • 2. Codec selection and bandwidth considerations
                                  Quality of Service (QoS)- End-to-end QoS design
                                  • 1. Latency and jitter control techniques
                                    • 2. DiffServ concepts
                                      - QoS mechanisms
                                      • 1. Queuing and congestion management
                                        • 2. Traffic prioritization and classification

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