Can I install broadband on a phone line that has a switchboard?
The phone lines from a switchboard are very different from the lines that come from your local phone company. There is a demarcation point where the phone company leaves off and the switchboard picks up. It would require special equipment to make this possible. In situations like this a dedicated connection is made between the demarcation point and the location where the DSL line is needed by bypassing the switchboard. Because there is probably extra wiring inside of the walls, this can be done relatively easy.