Ah, and the problem was there when AAISP were the ISP, from what you say? But which AAISP service was it, as they resell Be?
On the face of it my statement about LLU would cure it was wrong, but that was based on my thinking IDNet were now the ISP - hence my question when I realised.
IDNet are right I'm afraid, there is nothing they can do as it isn't a phone problem. They cannot get the broadband dropping investigated. They can only get the line tested for a working phone connection without the router connected.
All phone providers would say the same unless they were also the broadband provider.
It is Be who have to get this sorted out. Which ISPs have you been with while this has been happening?
Having said that, you mentioned different routers; filters; and a different handset. What about the phone base station, with its power supply? When you swapped routers, did you also swap their power supplies?
My other thought is a High Resistance (HR) fault. We haven't seen many of those recently and I had forgotten about them. It needs a bright and committed (Openreach broadband) engineer to find these. Many will not find it and you always do have that risk of a charge
. You certainly need to cover the power supply bit above.
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