At the PCP they identify the exchange and distribution sides of the line and break the circuit. The exchange side with Dial Tone is connected to a pair going into the fibre cab, and the Distributuon side is connected to the corresponding pair returning from the fibre cab with the Dial Tone and xDSL signal.
In the fibre cab everything should be connected through. There are plugin filters that connect through the circuit and allow testing of each port .
In a situation where a port is faulty the installation tech will be given alternative ports to try, but if they are all faulty then it suggests that either the filters are missing/not inserted fully or maybe a missing/ faulty VDSL card.
Edited by Ribble (Tue 22-May-12 19:38:56)