Overview: when we arrange to install FTTP (pure fibre directly into your building) an OpenReach engineer will feed the optical cable through the exterior and into your property. A small box will be fitted inside your building to terminate the optical cable and manage the optical signals - an Optical Network Terminal (ONT). A power socket will be required to power the ONT box, and another power socket for your WiFi router.

c.2024 onwards

The model may look similar, but with the items Left-to-right as follows:

LEDs: [ ] Alarm    [ ] LAN    [ ] PON    [ ] Power

Ports: OPTICAL    LAN    Power    ON/OFF (button)

c.2020 onwards

Power: Should be green after 2 minutes start-up.

LOS: “Loss Of Service” should be off; Red means optical cable fault.

PON: “Passive Optical Network” should be solid green.

LAN: Should be green; this cable connects to your broadband router (“WAN”) port.

IMPORTANT: Never unplug the optical connector. A special dust cleaning tool would be required to clean the port and the tip before re-insertion.

Pre-2020

The PON (Passive Optical Network) light means that the optical network is live

A red LOS light (Loss Of Service) indicates a problem

Connectors

On the base of the OpenReach ONT are power and optical, which the OpenReach engineer will connect for you, and "Port 1 / LAN" to connect your separate WiFi router.

All you will need to do is connect the yellow "Port 1 / LAN" on the OpenReach ONT to the "WAN / FTTP port" on the WiFi router that we will supply you with. No setup or configuration is required - everything has already been configured remotely by us.

MORE INFO

Diagrams from the official Openreach site at https://www.bt.com/help/broadband/whats-an-openreach-modem-ont

Type: BBU

This type of ONT has hinged front cover, with the ONT inside and a BBU (Battery Backup Unit)

Type: Nokia with / without cover

This type of ONT may have a hinged case, but no BBU, or no cover and just the white ONT; the hinged case may be vertical or horizontal.

Type: ECI modem or Huawei 4-port

This type has 4 LAN ports or 4 "ports", allowing multiple ISPs to provide different optical broadband services into the same property; for example, a home office connection entirely separate from the home broadband