scrotus said:There is another way to do this and not use the filters. You need to get an outdoor DSL wplitter and install it at the NID. It took me about 20 minutes to do this and it alleviates having to have a filter at each outlet. Also, as rumor has it, each filter adds distance to your loop length. This can affect speed. But I don't know if I lend much credence to that.
The hardest part of the install for me was using a voltmeter to find the right pair going to my office from my junction box. After that, you just splice that from the NID where the splitter is installed.
The splitter separates the data/voice signals at the NID so there is no need for indoor filters.
This site has some infor on installing the splitter. It's fairly easy. I was lucky since my new house is wired with cat5 so I just picked an unused pair from the existing cable to put the dsl on.
http://www.homephonewiring.com/dsl.html
This also solves problems with DSL and home alarms.
passive (the ones you plug in to each phone) filters do not add distance to your loop... all they do is prevent the dsl signals from interfering with the phone signals. this is why you only have to put them where there are things plugged in.
The active filters are great... however for some people and most apartment dwellers this is not an option.
For the record the passive filters only Filter the phone side of the frequency. anything attached to the modem side will be completely unfiltered