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Course Outline
Introduction to PON and Fiber Access Networks
- Understanding GPON and its role in FTTH/FTTx access networks
- Comparison of GPON, EPON, and XGS-PON: standards, bandwidth, and use cases
- Key advantages: high bandwidth, long reach, passive infrastructure, and energy efficiency
- Evolution roadmap: from GPON (G.984) to XGS-PON (G.9807.1), 25G PON, and 50G PON
GPON Architecture and Components
- OLT (Optical Line Terminal): role, placement, shelf architecture, and uplink options
- ONT/ONU (Optical Network Terminal/Unit): types, interfaces, and distinctions between residential and business models
- ODN (Optical Distribution Network): fibers, splitters (PLC), FDH, closures, and connectors
- Passive components: SC/APC, LC connectors, splice trays, and cable management
Optical Principles and Link Budget
- Wavelength plans: downstream 1490 nm and upstream 1310 nm
- Understanding optical loss, attenuation, and calculating the power budget for a PON link
- Selecting split ratios and analyzing their impact on reach and loss
- Practical exercise: calculating 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 deployments
- Coexistence of GPON and XGS-PON via WDM1r to facilitate smooth upgrades
- Practical exercise: designing a simple residential PON with a Bill of Materials (BOM) and link budget
Installation and Physical Deployment
- Fiber safety protocols: 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 premises placement
- 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 registration
- ONT state machine progression: from initial discovery (O1) to operation (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 monitoring, alarms, and remote management
- Common alarms: LOS, LOFi, DGi, TF, and their physical and logical causes
Troubleshooting Common Issues
- Systematic fault isolation using a divide-and-conquer approach from subscriber to OLT side
- Diagnosing offline ONTs: authentication failures, OMCI timeouts, and rogue ONT detection
- Identifying 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): delivering symmetric 10G to meet modern demands
- 25G PON and 50G PON: emerging frontiers for 5G transport and enterprise applications
- Trends in 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
- Fiber safety and Class 3B laser handling procedures
- 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 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)
- Exam topic mapping, key takeaways, and next steps for specialization
- Final practical assessment and Q&A session
Requirements
- Fundamental understanding of telecommunications and IP networking concepts
- No prior experience with fiber optics or GPON is required
Audience
- Telecommunications technicians and engineers
- Field deployment and installation staff
- Network operations center personnel starting work with GPON infrastructure
21 Hours
Testimonials (1)
communication, knowledge from experience, solve problems,
