I am replacing my BT home hub and router with a non BT modem/router. However the new rouetr does not detect the DSL input. Is there a compatability problem when using non BT equipment with BT OpenReach?
No, but are you sure it is a VDSL modem/router if you have Infinity rather than an ADSL modem/router. What is the exact make and model?
the BT hubs 5 and 6 are both adsl/vdsl if hh4 or earlier then only adsl