Hi there,
There are 3 scenarios for ADSL/Infinity in the UK:
1. Old school ADSL that uses (as you say) the RJ11 plus and is actually using PPPoA and therefore requires an ADSL modem, the options are to use BT's home/business hub and then connect with ethernet to this, which is what I think you are trying to avoid, the other option is to use a VIGOR 120 (or 130) from Draytec, this is a PPPaA to PPPoE bridge so you can connect this to your phone line and then the MX to the VIGOR and it will do a PPPaE to PPP0A converson therefore acting as a bridge.
2. VDSL / Infinity - FTTC this unfortunately has two versions (to confuse things) it can be a FTTC solution that is still delivered via the phone line and a splitter as above in option 1, but you will need the VIGOR 130, the other version is where BT install a white box called the ONT (which is the same as they use for FTTP) and this has ethernet ports on which you can then connect to your MX and configure for PPPoE
3. If you are fortunate to get Infinity 3/4 which is FTTP then you just plug the MX into the port and configure for PPPoE
Hope this helps
CTO & Solutioneer
CMNA, CMNO, ECMS2
SNSA, SNSP
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