Nortel 920-551 Exam : GSM BTS 18000 Installation and Commissioning

920-551
  • Exam Code: 920-551
  • Exam Name: GSM BTS 18000 Installation and Commissioning
  • Updated: Aug 22, 2026
  • Q & A: 75 Questions and Answers

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Nortel 920-551 Exam Syllabus Topics:

SectionObjectives
Operations, Maintenance, and Troubleshooting- Maintenance procedures
  • 1. Hardware replacement guidelines
    • 2. Preventive maintenance tasks
      - Alarm management
      • 1. Alarm clearing procedures
        • 2. Fault detection and interpretation
          GSM BTS 18000 System Overview- GSM network fundamentals
          • 1. Radio access network principles
            • 2. GSM channel structure basics
              - Architecture of GSM BTS 18000
              • 1. BTS subsystems and interfaces
                • 2. Base station components overview
                  Installation Procedures- Site preparation
                  • 1. Rack and cabinet installation requirements
                    • 2. Environmental and grounding considerations
                      - Hardware installation
                      • 1. Cabling and connector setup
                        • 2. BTS module installation steps
                          Power and Transmission Systems- Transmission configuration
                          • 1. Backhaul connectivity setup
                            • 2. E1/Transmission link configuration
                              - Power system setup
                              • 1. Backup power integration
                                • 2. DC power distribution
                                  Commissioning and Configuration- Software loading and initialization
                                  • 1. Initial system boot and checks
                                    • 2. BTS software installation process
                                      - Radio configuration
                                      • 1. Frequency planning basics
                                        • 2. TRX configuration and activation

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