Openreach FTTP ONT
This page is about the FTTP termination device that Openreach install for FTTP customers.
Summary: a normal unit has green: power, PON & LAN, anything else indicates a problem.
- Newer ONT installs do not include a Battery Backup Unit (BBU)
- Older Openreach ONT (Optical Network Termination) such as the one pictured, is actually inside the enclosure. This also contains a Battery Backup Unit (BBU) along with various wiring and cable management.
- The ONT requires power, so will need a mains power socket nearby.
- Where provided, the battery has a short warranty, and should be maintained by the end user, however, the battery is to keep the unit powered so that the TEL ports can be used during a power outage - we don't use the TEL ports, so you will want to make other arrangements for using a phone during a power outage - eg a mobile phone.
LED Status
| LED | Colour | Meaning | Notes | ||
|---|---|---|---|---|---|
| Top (ONT) LEDs | |||||
| TEL1 | Off | We don't use the Tel ports | |||
| PORT1 or LAN | Blinking/Flashing green | Data being transmitted | Good | ||
| Off | ONT has no ethernet link to the router | Bad. Check the connection/cable to the router | |||
| LOS (Loss of service) PON (Passive Optical Network) |
PON solid green, LOS off | Connected and should be working | Good. This is how it should be normally | ||
| PON flashing green, LOS off | ONT is starting up | Wait a bit for steady green and all should be well... | |||
| PON off, LOS solid red | Possible fault with the fibre | Bad. Check fibre not damaged, reconnect fibre, power cycle ONT | |||
| POWER | Solid green | Device has power | Good | ||
| Off | Power is off | Bad. Check mains power and connection to BBU/ONT | |||
| Bottom right (BBU) LEDs | |||||
| STATUS | Solid green | Good | |||
| Off | |||||
| FAULT | Solid red | Battery fault | Bad. Replace the AA batteries inside | ||
| Off | Good. No fault | ||||
| CHARGING | Solid orange | Batteries are not fully charged | Wait; the batteries are charging (usually after a power cut) | ||
| Off | Batteries are not being charged | Good. The batteries are fully charged | |||