that the connection is completely losing Auth/sync, which can often indicate a problem from the modem back to the exchange. If it's only losing Auth, I'd suggest bridging the modem and getting a computer to negotiate the PPP session. This can help determine if the modem is at fault. If it's losing sync as well, we'd recommend testing another modem in case that's the cause of the problem. The link stays up. I can still connect to iiNet, toolbox, email and (usually) Whirlpool, so the link, authentication etc. stays up. No changes on the lights. It's already isolated, in being naked, I only have one phone point in the house, and it's connected by one cable to the modem/router. Belkin modem. especially if it is a year or two old, and even more especially if you or anyone in the house is using p2p of any sort. The few Belkins I have had to deal with (reluctantly as I dislike them) seem to have a very limited NAT table which is easy to flood. Operation Data Upstream Downstream Noise Margin 16 dB 13 dB Attenuation 60 dB 44 dB I would also think you have a line fault of some sort if that is right because no way should your upstream attenuation be higher than your downstream. Unless those entries got inadvertently reversed during posting.