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I have recently put new telephone cables and sockets throughout various rooms in my house. these are connected to the main telephone box in my hall where i run my adsl broadband connection from. when the phone sockets in the other rooms are connected the internet has no dial tone yet the phones all have a dial tones. when i disconnect the telephone cables from the main box the internet works fine. what am i doing wrong?

I think you need a microfilter for each phone socket