Thanks for your input. Difficult I know as you can only base your replies on the stats I have shown but I do appreciate your insight.
However, my concern about these current figures is fueled with the advantage of knowing the history of this adsl connection which for a long time has been stable, apart from needing an odd router power cycle. The noise margin figure on the download over this time bouncing along around 6 -12 db and was achieving around 2 - 2.4 Mbs download speed (if the speed test site can be believed).
Now though, the line stats I am seeing in the router are all over the place compared to the historical figures (unfortunately I don't have long term records of these
). For example the router now doesn't register the output power on the download which it always has up to now, the Noise margin has never dipped below 6db, interestingly I have seen flappin fiber interfaces log errors as quickly as FEC errors have gone up.
I guess I have had, for the length of the line, pretty good BB until now and I accept that FEC errors don't require re transmission (CRC errors do though) but with my current understanding I have always used FEC's as a gauge to the line quality. Anyways streaming video last night was not a pleasant experience, constant buffering and when it did stream it wasn't fluid, quite jerky.
Another question, are the noise margin figures to do with line profiling or are they SNR figure therefore the lower they are the more noise less signal you get?
If you have got this far in this post, thank you, sorry its quite long want to make sure my understanding is correct.