Openreach FTTP ONT

Back up to the Routers Category
From AAISP Support Site


This page is about the FTTP termination device that Openreach install for FTTP customers.

Openreach ONT

The Openreach ONT is actually inside an enclosure which also contains a Battery Backup Unit (BBU) and various wiring.

The ONT requires power, so will need a mains power socket nearby.

LED Status

Openreach ONT LED Status
LED Colour Meaning Notes
Power Green has power Good
Off no power Bad. Check mains power
PON & LOS PON 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 red Possible fault with the fibre Bad. Check fibre not damaged, reconnect fibre, power cycle ONT
PORT1 off ONT has not ethernet link to the router Bad. Check the connection/cable to the router
blinking/flashing data being transmitted Good
Tel We don't use the Tel ports
Status/Fault/Charging Related to the battery backup

LOS = Loss of service. PON = Passive Optical Network