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Duration 21 hours
Course Outline
Introduction to PON and Fiber Access Networks
- Defining GPON and its role within FTTH/FTTx access networks
- Comparison of GPON, EPON, and XGS-PON: standards, bandwidth capabilities, and applicable use cases
- Key advantages: high bandwidth, extended reach, passive infrastructure, and energy efficiency
- Evolution roadmap: progression from GPON (G.984) to XGS-PON (G.9807.1), 25G PON, and 50G PON
GPON Architecture and Components
- OLT (Optical Line Terminal): function, location, shelf architecture, and uplink interfaces
- ONT/ONU (Optical Network Terminal/Unit): types, interface options, and distinctions between residential and business models
- ODN (Optical Distribution Network): fibers, PLC splitters, FDH, closures, and connectors
- Passive components: SC/APC and LC connectors, splice trays, and cable management systems
Optical Principles and Link Budget
- Wavelength plans: downstream at 1490 nm and upstream at 1310 nm
- Optical loss, attenuation, and calculating the power budget for a PON link
- Selecting split ratios and analyzing their impact on reach and signal loss
- Practical exercise: compute a link budget for a real-world deployment scenario
Network Design and Planning
- PON topology: centralized versus cascaded splitting strategies
- Fiber capacity planning and route design for both urban and rural environments
- Coexistence of GPON and XGS-PON via WDM1r to facilitate smooth upgrades
- Practical exercise: design a simple residential PON including a BOM and link budget
Installation and Physical Deployment
- Fiber safety: laser handling, eye protection, and electrical safety near power lines
- Fiber 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 at customer premises
- Real-world scenario: deploying a distribution point to multiple subscriber homes
Basic Configuration (Vendor-Neutral Concepts)
- OLT provisioning: PON ports, GEM ports, T-CONTs, and service profiles
- VLAN tagging, bandwidth profiles, and QoS implementation for triple-play services
- ONT authentication methods: serial number, LOID, and password-based registration
- ONT state machine: transitioning from initial discovery (O1) to operational status (O5)
- Practical exercise: configuring voice, video, and data services on a simulator
Operation and Monitoring
- Application of the FCAPS model to GPON networks
- Key performance indicators: Rx/Tx optical power levels, optical budget margin, and BER
- Utilizing generic EMS/NMS and OMCI for status tracking, alarm management, and remote administration
- Common alarms: LOS, LOFi, DGi, TF, and their underlying physical and logical causes
Troubleshooting Common Issues
- Systematic fault isolation: a divide-and-conquer approach from the subscriber side to the OLT
- ONT offline issues: authentication failures, OMCI timeouts, and detection of rogue ONTs
- Diagnosing low optical power, macrobends, and dirty connectors using OTDR and VFL
- Practical exercise: diagnosing a failing subscriber circuit using alarm data and OTDR traces
Modern PON Standards and Future Evolution
- XGS-PON (G.9807.1 Amendment 1, May 2025): symmetric 10G capability for modern demands
- 25G PON and 50G PON: next-generation frontiers for 5G transport and enterprise applications
- Trends in network slicing and intelligent ODN management for 2026 and beyond
- Strategies for migrating from GPON to XGS-PON while preserving existing investments
Best Practices, Safety, and Documentation
- Fiber safety protocols and procedures for handling Class 3B lasers
- Documentation standards: labeling, cable records, as-built drawings, and asset databases
- Preventive maintenance: cleaning, inspection schedules, and closure management
Certification Preparation and Review
- Overview of certifications: FOA CFOT/CFOS, BICSI INSTF/TECH, and vendor-specific tracks
- Relevant ITU-T standards: G.984 series, G.9807.1, and G.988 (OMCI)
- Mapping exam topics, key takeaways, and pathways for further specialization
- Final practical assessment and Q&A session
Requirements
- A foundational understanding of telecommunications and IP networking concepts
- No previous experience with fiber optics or GPON is necessary
Target Audience
- Telecommunications technicians and engineers
- Field deployment and installation personnel
- Network operations center staff initiating work with GPON infrastructure
Testimonials (1)
communication, knowledge from experience, solve problems,
