extremely bad advice!
just "turning the power button off" may result in your line having DLM applied, which will result in a slower connection.
if you keep doing it then you will adversely affect your line.
you should never just kill the power on the router, you should always do a graceful disconnection of the DSL link before powering off the router.
I am not being argumentative, in fact, I want the argumentative posts to stop - debate, by all means, just nicely.
Firstly, this thread is 2 months old, I'm sure the original problem has been debated to death.
Second, checks when you answered initially, you used acronyms which frankly, went miles over my head, without trying to explain them.
Third, I have many times been asked to just plug out my router, in fact it seems to be the only thing "customer service" know, so I unplug mine just before I ring them.
Fourth, I wasn't being funny when I asked how to disconnect gracefully, your reply just gives me more jargon, so I still don't know how. If this is a thing, surely our instruction manuals would tell us how to power off? And surely they wouldn't want all and sundry pricking around with the router settings, you see how poorly they deal with instructions in other threads, their heads would be melted with people making a mess of their service.
Now guys, debate away, but play nicely.