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I have BT Infinity broadband (UK) which is Fibre to the Cabinet (FTTC) and then VDSL from the cabinet to the property.

BT supply a BT Openreach branded modem to work with the VDSL connection.

My question is: Will any standard ADSL2+ modem be able to handle a VDSL input if the settings are correctly adjusted?

My suspicions point me to the conclusion that the Openreach branded modem is just a basic ADSL modem (the VDSL acronym does not appear on the hardware at all, only an LED marked "DSL"), and I read that VDSL was the same technology as ADSL but with higher frequency downstream and upstream rates. Is this true?

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It would be equivalent to trying to use an ADSL modem for an ADSL2 circuit. So no, it would not work, as ADSL, ADSL2 and VDSL are all different standards on the same family of technology, DSL.

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