I've turned everything off now, because I have noticed a problem with incoming telephone calls.
Here is my attempt to diagnose the issue:
* Turn off computer, disconnect router,any broadband stuff whatsoever.
* Into main BT box, just plug in a single phone. Dial tone is OK. Calls out are OK.
* Call into the phone, using a mobile for example. Phone "blips" (something like half a ring tone), then caller is greeted with static and is eventually forwarded to 1571 BT voice mail.
* Connect microfilter at main BT box. Plug in phone. Outgoing calls are OK. But same issue with incoming calls, caller is greeted with loads of static, totally unusable.
Any ideas?
Thanks
Mike