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Nortel 920-255

920-255

Exam Code: 920-255

Exam Name: Nortel Secure Router Ris.2.0 Configuration and Management

Updated: Aug 16, 2026

Q & A: 65 Questions and Answers

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Nortel 920-255 Exam Syllabus Topics:

SectionObjectives
Topic 1: System Configuration and Deployment- Installation and setup
  • 1. Initial configuration steps
    • 2. Voice system deployment procedures
      - Integration with enterprise systems
      • 1. PSTN integration
        • 2. SIP trunk configuration
          Topic 2: Network Infrastructure for Voice- QoS for voice traffic
          • 1. Traffic prioritization techniques
            • 2. Latency, jitter, and packet loss control
              - IP network requirements
              • 1. LAN/WAN considerations
                • 2. Bandwidth planning for voice services
                  Topic 3: Enterprise Voice Architecture- Nortel voice solutions architecture
                  • 1. Media gateway integration
                    • 2. Call routing and switching design
                      - VoIP fundamentals
                      • 1. Signaling protocols (SIP, H.323)
                        • 2. IP telephony concepts
                          Topic 4: Call Control and Unified Communications- Call processing
                          • 1. Dial plan configuration
                            • 2. Call admission control
                              - Unified communications services
                              • 1. Presence and collaboration services
                                • 2. Voicemail and messaging integration
                                  Topic 5: Operations, Maintenance, and Troubleshooting- Fault diagnosis
                                  • 1. Common call failure scenarios
                                    • 2. Performance troubleshooting procedures
                                      - System monitoring
                                      • 1. Alarm and event management
                                        • 2. Voice quality monitoring tools

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