Via tracert, how many hops between the locations? If you tracert a few
different times over an hour, does the route change?
Call the DSL provider and ask them to check for line noise/signal
degradation. If any is found, ask if there are any load coils on the
loop and can they be removed. Load c
Not sure why they disconnect, but I see it as well.
Just a suggestion to relieve user frustration - you can set their VPN dialer
to re-dial when disconnected and set the interval it waits. If you set it
with a short enough interval, the users may be able to live with it until
you figure out why yo