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Course Outline
Introduction to PON and Fibre Access Networks
- Defining GPON and its position within FTTH/FTTx access networks
- Comparing GPON, EPON, and XGS-PON: examining standards, bandwidth capabilities, and application scenarios
- Key advantages: high bandwidth, extended reach, passive infrastructure, and energy efficiency
- Evolving roadmap: transitioning from GPON (G.984) to XGS-PON (G.9807.1), 25G PON, and 50G PON
GPON Architecture and Components
- OLT (Optical Line Terminal): understanding its role, placement, shelf architecture, and uplink capabilities
- ONT/ONU (Optical Network Terminal/Unit): exploring types, interfaces, and distinctions between residential and business models
- ODN (Optical Distribution Network): covering fibres, splitters (PLC), FDH, closures, and connectors
- Passive components: working with SC/APC and LC connectors, splice trays, and cable management solutions
Optical Principles and Link Budget
- Wavelength planning: downstream at 1490 nm and upstream at 1310 nm
- Understanding optical loss, attenuation, and calculating the power budget for a PON link
- Selecting appropriate split ratios and analyzing their impact on reach and signal loss
- Practical task: calculating a link budget for a specific real-world deployment scenario
Network Design and Planning
- PON topology strategies: comparing centralized versus cascaded splitting methods
- Fibre capacity planning and route design for both urban and rural environments
- Achieving coexistence of GPON and XGS-PON using WDM1r for seamless upgrades
- Practical task: designing a simple residential PON setup, including a Bill of Materials (BOM) and link budget
Installation and Physical Deployment
- Fibre safety protocols: laser handling, eye protection, and electrical safety near power lines
- Fibre handling techniques: stripping, cleaving, cleaning, and inspection using a microscope
- Best practices for fusion splicing and mechanical connectorization
- Guidelines for OLT rack installation and ONT placement on customer premises
- Real-world scenario: deploying a distribution point to connect multiple subscriber homes
Basic Configuration (Vendor-Neutral Concepts)
- OLT provisioning: managing PON ports, GEM ports, T-CONTs, and service profiles
- Configuring VLAN tagging, bandwidth profiles, and QoS for triple-play services
- ONT authentication methods: utilizing serial numbers, LOIDs, and password registration
- Understanding the ONT state machine: from initial discovery (O1) to full operation (O5)
- Practical task: configuring voice, video, and data services using a simulator
Operation and Monitoring
- Applying the FCAPS model to GPON network management
- Key performance indicators: Rx/Tx optical power levels, optical budget margins, and Bit Error Rate (BER)
- Utilizing generic EMS/NMS and OMCI for status monitoring, alarm management, and remote administration
- Interpreting common alarms: LOS, LOFi, DGi, and TF, along with their physical and logical causes
Troubleshooting Common Issues
- Systematic fault isolation: using a divide-and-conquer approach from the subscriber side to the OLT side
- Diagnosing offline ONTs: addressing authentication failures, OMCI timeouts, and detecting rogue ONTs
- Identifying low optical power, macrobends, and dirty connectors using OTDR and VFL tools
- Practical task: diagnosing a failing subscriber circuit by analyzing alarm data and OTDR traces
Modern PON Standards and Future Evolution
- XGS-PON (G.9807.1 Amendment 1, May 2025): providing symmetric 10G speeds for modern demands
- 25G PON and 50G PON: exploring next-generation frontiers for 5G transport and enterprise applications
- Emerging trends: network slicing and intelligent ODN for 2026 and beyond
- Strategies for migrating from GPON to XGS-PON while protecting existing investments
Best Practices, Safety, and Documentation
- Fibre safety and procedures for handling Class 3B lasers
- Documentation standards: labeling, cable records, as-built drawings, and asset database maintenance
- Preventive maintenance: scheduling cleaning, inspections, and managing closures
Certification Preparation and Review
- Overview of relevant certifications: FOA CFOT/CFOS, BICSI INSTF/TECH, and vendor-specific tracks
- Key ITU-T standards: G.984 series, G.9807.1, and G.988 (OMCI)
- Mapping exam topics, summarizing key takeaways, and outlining next steps for specialization
- Final practical assessment and Q&A session
Requirements
- Familiarity with basic telecommunications and IP networking concepts
- No prior experience in fibre optics or GPON is necessary
Target Audience
- Telecommunications technicians and engineers
- Field staff responsible for deployment and installation
- Network Operations Center (NOC) personnel starting work with GPON infrastructure
21 Hours
Testimonials (1)
communication, knowledge from experience, solve problems,
