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Nortel 920-255 Exam Syllabus Topics:

SectionObjectives
Enterprise Voice Architecture- Nortel voice solutions architecture
  • 1. Call routing and switching design
    • 2. Media gateway integration
      - VoIP fundamentals
      • 1. Signaling protocols (SIP, H.323)
        • 2. IP telephony concepts
          Operations, Maintenance, and Troubleshooting- Fault diagnosis
          • 1. Performance troubleshooting procedures
            • 2. Common call failure scenarios
              - System monitoring
              • 1. Alarm and event management
                • 2. Voice quality monitoring tools
                  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
                          Network Infrastructure for Voice- IP network requirements
                          • 1. Bandwidth planning for voice services
                            • 2. LAN/WAN considerations
                              - QoS for voice traffic
                              • 1. Traffic prioritization techniques
                                • 2. Latency, jitter, and packet loss control
                                  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

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