Sorry Folks broadband failure in middle of previous post
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First time poster, regular reader. For around 18 months I have been working with an ongoing challenge with the broadband modem competing with the telephone line to take control! For some 18 months we have tolerated what sounds like crossover as the modem handshakes and then runs in the background on its broadband duties at the same time introducing what sounds almost like white noise into the phone line. This makes for poor telephone conversations. In retaliation whenever we call out or receive a call the phone line disconnects the broadband service. We have been through the whole sad story of calling telecom help line, talking to a range of people in help desks here and other countries, used the telecom complex technical support email service, used the modem manufacturers online help desk etc etc. had two visits from Chorus, on the last a new phone line from the entry point at the house (in the attic) down a wall and into a new wall fitting with splitter fitted, all made no difference same outcome. Also I have disconnected the modem (a DSL 302G and now a DSL 502T) output so their was no radiating possibilities getting back into the phone line (anyway its ethernet and didn't make any difference) We have changed modems, changed filters 3 times, changed phones.. A day or so ago I had enough and had the opportunity to truly isolate the phone line and modem from any other external sources. I physically cut out the one extended phone line we have into another room, closed down all power and equipment in the general area, disabled anything I could find that may be causing some sort of interference with the modem out of left field that could contribute! Basically then the telephone network was a single brand new line from the entry to the house on the inside (in the attic) to the wall socket where a splitter is fitted behind a new wall fitting , the phone was then connected to the same wall fitting via a new filter. Outcome, exactly the same ie filters have no effect. I cant get past go on this one forget any modem settings or anything else we seem to be faced with a basic first requirement is a filter system that works? Yes? I'm thinking maybe we have a weird earth problem in the house that is preventing the filters from decoupling the modem noise , of course if we switch the modem off the problem goes away re noise on the line its pretty well a clear line. We are around 2.5km from the exchange on a standard adsl line, Pro Plan.

Looking for out of left field ideas.

Cheers Ken