@cjbev wrote:
So does seem like something changed in the infrastructure to drop from 5 to 1 in the last few weeks?
Probably a new customer connected or a customer with a faulty pair swapped to a pair that disturbs your pair that was previously spare.
Ouch!
Something is wrong there.
Have you tried a short (20 second) disconnection of the incoming DSL line, and then see if it reconnects at a higher speed.
A loss of higher frequencies can be caused by changes in your own internal wiring, so yo really need to check the connection speed at the test socket.
If you cannot get a better upload connection speed, even at the test socket, then you must have a lot of high frequency interference or loss, which is making the top part of your frequency allocation unusable.
It could be caused by a split pair on another circuit which would cause a lot of crosstalk. Its going to be almost impossible to locate, although a pair change may help, if that has not already been tried.
I get a better upload connection speed on my ADSL line.
Just a quick check, are you using any powerline adaptors, as they can cause this type of interference?