Revision as of 22:50, 10 November 2021

Openreach ONT

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

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
Power	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
PORT1	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

@@ Line 20: / Line 20: @@
 | Off || no power || '''Bad'''. Check mains power
 |-
-|rowspan="3"| '''PON & LOS''' || PON green, LOS Off || Connected and should be working || '''Good'''
+|rowspan="3"| '''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...
@@ Line 26: / Line 26: @@
 |  PON off, LOS red || Possible fault with the fibre || '''Bad'''. Check fibre not damaged, reconnect fibre, power cycle ONT
 |-
-|rowspan="2"| '''PORT1''' || off || ONT has not ethernet link to the router || '''Bad'''. Check router
+|rowspan="2"| '''PORT1''' || off || ONT has not ethernet link to the router || '''Bad'''. Check the connection/cable to the router
 |-
 |  blinking/flashing || data being transmitted || '''Good'''