At random times, but less often at night, my ADSL modem loses its connection with the CO. It can be running fine for 4 hours, then quit, or quit every 15 minutes at other times. Totally unpredictable. It takes anywhere from 30 seconds to 10+ minutes to re-sync. Thirty minutes was the worst outage. I'm getting or exceeding the advertised speed of 1m/384k when it works, which is ~95% of the time. My phone line has had intermittent static for years. There are no apparent loose wires inside the house, which was built in the mid 70s.
The ISP checked it out twice and all stats look normal when it's in sync. Of course the drops only occur when the tech isn't testing the line. They make it seem like future checks might find "the problem" but one guy admitted that the telephone line is probably marginal between my house and the CO 14,700 feet away. I think the wind blows or water condenses somewhere and destabilizes a weak link. How can anyone know where to check along that entire distance?
I don't want to bother with continued service calls that won't find anything new. Is it common to just accept this as a limitation of DSL and be grateful you're rid of dialup?
Jim