I have lost my link to an ADSL site that has wiring diagrams of filters. I think it was on ADSLguide.org.uk, but I can't seem to find it now.
The reason I need a diagram is that some filters have the ring wire connected. I have just helped a friend set up for Broadband, but he has an old Candlestick telephone that has a seperate bell. With a filter in cicuit, the bell tinkles when dialling.
I've deduced that the dial off-normal circuit that short-circuits the bell is not 'getting through' the filter, and I would like to find a filter that would solve this problem.