(Edit: Some) People are claiming online, and particularly on Amazon, that they are getting dropouts on broadband, and are reporting it to bt, who send out an engineer. The engineer reports the line is ok up to the property, but notices they have a CPR call blocker and their apparatus reports a loop back on the line until this is removed.
Being as it is not Openreach's responsibility, the customers are charged for the visit.
CPR say yes, the way their blockers work, they will cause a "fault" on the engineer's apparatus, but it is not really a fault, just a side effect, and not a cause of losing broadband.
The really worrying thing then emerges. Some users are claiming that some master sockets are incorrectly wired. There are only two wires. Reversing them causes the problem to disappear.
I don't know enough about this to be able to comment, but is it a possibility? There is, of course, the possibility of
extensions being incorrectly wired. I know for a fact that there are two ways at least to wire an extension.
- Plug in an extension lead. Not very neat.
- Wire directly into the socket, as there are extension terminals already there.
So what do you make of this?