There must have been some additional noise / errors to trigger it at some point. DLM runs on your line & it monitors your line individually, so it's not 'broken' it's just doing its job - sadly most of us don't like it.
Crosstalk can cause a line on fibre to lose 10+ Mbps suddenly. Of course you cannot remove the crosstalk, only correct for it via interleaving usually or reduce everybody's output power but that's not going to happen.
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You got over £1000 to spend to get it installed? Grrrr!
My broadband basic info/help site - www.robertos.me.uk | Domains,website and mail hosting -Tsohost. Connection -Plusnet UnLim Fibre (FTTC). Sync ~ 51.8/16.8Mbps @ 600m. - BQM
"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Allergy information: This post was manufactured in an environment where nuts are present. It may include traces of understatement, litotes and humour.
adslmax (knowledge is power)
Tue 27-Aug-13 04:10:31