I'm looking for advice/opinions on my current ADSL fault. I'll try to keep this as short as possible, but fear it may become a wall of text.
Summary - I've gone from having a perfect line that never dropped and had zero errors, to a line that is now disconnecting anywhere between 2-8 times a day with a couple thousand CRC, FEC and HEC errors over the same period. Every time the line gets reset, the SNR target, like clockwork, increases each day until it gets to 15db. My ISP (Plusnet) say
After a more advanced test we can see the line is initialising a lot more often than it shows on the radius logs.
History of the fault(s) - My exchange was upgraded to 21CN in December, everything looked good, no disconnections, very few errors and it held sync at 3db SNR. A few weeks later I started to notice packet loss (up to 25% at times.) At this point I reported a fault to Plusnet.
An engineer arrived and concluded the line within my home was perfect. After complaining some more it became apparent other customers were experiencing the same and so a common fault was raised against the exchange. After investigation they concluded that there was nothing obvious at the exchange that could be causing my issues, but the packet loss magically disappeared!
However, it was at this point I started to see more errors, disconnections and some odd SNR readings on my router (and two other routers I tried.) By odd I mean 0db and on one of them SNR showed as -51db (minus.)
Every engineer that has visited has said the line inside my home is perfect. One found an issue on overhead cabling when conducting a hawk test. He fixed that. Same issues in the days after he left.
The most recent engineer to visit checked every overhead connection up to the point that the cables go underground to the exchange (I'm on an exchange only line.) He found that the cable was 'badly corroded,' he fixed that. Same issues in the days after he left.
This is incredibly frustrating, as I said, this has been going on since January. Plusnet ticket response isn't nearly as fast as it has been previously, in fact I haven't heard from them since Monday when I told them what happened with the last engineer visit.
This leads me to my questions - I've seen AAISP's 'guarantee' of getting faults fixed. Are they really better than other ISPs at chasing up Openreach and getting results? Would ordering a broadband only line from them bypass the issues I'm having with the current line, or would I likely have the same problem, but be £125 worse off?
So, in short, should I keep waiting to see if Plusnet can get this fixed or should I look to switch ISPs? If you think switching is worthwhile, with or without a new line?
I look forward to your thoughts, thanks for reading,