Fiber to the premises: from OLT to ONT

Skills you'll practise

• Identify the parts of a PON path from OLT to ONT and what each does
• Calculate expected light at the ONT from a loss budget and compare readings with the provider's spec
• Interpret ONT status lights using the model's own legend
• Recognize connector, splice, bend and end events on an OTDR trace
• Work back along a fiber path to isolate a fault safely

Course outline

1. 1.Fiber to the premises: from OLT to ONTVideo · 2 min
2. 2.The PON path, end to endLesson · 16 min
3. 3.Light levels and loss budgetsLesson · 18 min
4. 4.Connectors, ONT lights and fault-findingLesson · 18 min
5. 5.Fiber to the premises: from OLT to ONT: knowledge checkKnowledge check · 29 questions
6. 6.Fiber customer offline the day after a drop repairScenario
7. 7.Final exam10 questions · passing it completes the course, so people who already know the material can test out

Sources it draws on

The lessons and questions are written from these references, so learners can go back to the original.

• ITU-T G.984 series: Gigabit-capable passive optical networks (GPON), incl. G.984.2 optical classes
• ITU-T G.9807.1: 10-Gigabit-capable symmetric passive optical network (XGS-PON)
• ANSI/TIA-598: Optical fiber cable color coding
• IEC 60825-2: Safety of optical fibre communication systems
• Fluke Networks: APC connectors (green APC / blue UPC single-mode convention; verify the connector type)