Probably the silliest urban myth surrounding Fibre to the Node (FTTN) is the idea, promoted in some national newspapers, that optical signals interfere with electrical signals. However, there is a problem: the VDSL-based network proposed to connect nodes to homes can cause problems for ADSL2+ services from the same exchange - and ISPs fear that their ADSL2+ investments will be stranded by the NBN.
In A Series of Tubes, Richard Chirgwin talks to ADSL standards expert Dr Paul Brooks of Layer 10 Consulting, about whether VDSL and ADSL can co-exist.
