Quote:
Originally Posted by BeerCanSandwich
You lucky lot with your spare SNRM. Mine is right on the edge and I swing from 70Mb sync interleved to full sync not interleved every month or two, atm it's the former.  Still, it's not slow so can't really complain.
Are you aware of the graphing scripts?
You can log stats 24/7..
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and create a snapshot as and when, HLOG and QLN only update on connection but the rest are dynamic, this would show where your attainable went if you have a before and after. If it's not done a full reboot you might still be able to graab a before for the HLOG and QLN...
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Also the FEC and CRC errors are reversed in the GUI of the HG612, it's a known bug, on your line interleving is off so it's impossible to have a FEC count because there is no error correction happening 
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yes I know the FEC and cRC are backwards in the GUI.
I didnt do any graphs before the attainable dissapeared and I am not about to start resyncing to see if it comes back, I will only do that sort of thing if my actual sync drops below 79999.
It seems the reason BT estimate so low is crosstalk is brutal on VDSL2, potentially with 20 or so lines active in a bundle it can lose 40% or so of speed. However its estimated within 18 months or so vectoring will be rolled out which should cancel out much of the affects of crosstalk.