As far as I know, if you install DSL in your home you should (must?) have line filters installed on your regular “voice” phone lines.
What happens if you don’t and use the phone? Is there a loud screeching noise in your ear similar to picking up the telephone and your regular 56K modem is in use?
You get a lot of static and it sometimes adds an echo to it…
Keith
In my case the modem would not connect. But then it turned out to be flaky even with the “Z-filter” (it seems to be called; don’t know why). Eventually they replaced the line from the house to the pole and then something the guy called the “protection box”. He didn’t speak English very well, so that could be his translation, presumably of “boite de protection” and is not necessarily the English name. At all events that was over a year ago and we have not lost connection since. Before that, losing connection was a regular thing, every week or so. I have not, however, attempted to remove the filters just to see what happens.
I’ve personally installed many DSL modems and routers and I’ve only once had a complaint with static on the voice line. That complaint was by a classical musician, someone who deserved the name “Audiophile”.
I’ve also personally used a dial-up with no filter while the DSL was on and had no problems at all. (I did this to try to increase my Upload bandwidth, IE I set the dial-up to exclusively be used for uploads…that was SUCH a pain).