Hi yes have tried all the usual suspects, router reports as connected its a old Dlink 502T and i have a spare that works as well, have done the line test thing and they said it had a fault and where going to send someone out last Sunday then Monday then nothing till i rang yesterday and now they can't say.
see if you can get some error stats and check crc errors
if it says line down or you watch it come up and then drop will give you some idea
line down is them unplugged it..
line coming up and down we had also.. when it rained lots seemed to get wetness in a cable on street somewhere.. always came good when it dried out problem never fixed though.. happens randomly like that.. but lately it might drop and be slower speed until it dries out
also a friend had a fauly router (4 port wireless).. telecom sent him a new one and fixed the probllem
but helps if got own spare one to check to confirm it..
i think his cat k9 bite through the cable from phone and maybe shorted it out enough causing damage on the phone jack side of things
I will spend tomorrow looking into broadband from another supplier or even just changing everything, I spoke to telecom they want NZ$100 + 60 and change to rejoin them or else go on a 12 month contract.