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27/02/2025, 16:12

What do the lights on the Openreach modem mean? | BT Help

ECI modem Lights: Power, Optical, Tel (x2) and LAN (x4)

ECI C-Series modem Lights: Power, Optical, Tel (x2) and LAN (x4)

https://www.bt.com/help/landline/lights-on-the-openreach-modem

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