09 Apr 12, 05:33PM
Since your phone affects the line, I'll assume it's ADSL. Have you tried replacing the microfilter(s)? Also, when I was on ADSL I had a terrible 3Com modem/router which would drop the connection several times per day. When I replaced this with a cheap-ass Netgear, the connection stayed up 24/7. Try borrowing another modem and/or router to see if that fixes it.