Hello,
Maybe someone here can help me try to make sense of a curious problem, I use a Billion Bipac 7700N router, until recently using BE - now on plusnet as in a few months o2 are of course switching their network off. My line is fairly long with a 52db attenuation - can manage a sync of 5200 @6db. When on BE I used to manually set my router to sync on plain adsl2, as 2+ was less stable, had no benefit on my line and took ages to sync. Since moving to plusnet i can only sync on adsl/g.dmt which is ok if that how its been provisioned - the speeds are no worse, and its certainly a 21CN connection as I'm on an inner london exchange and the old adsl max service has been withdrawn.
My question : On my billion, bitswap is set to OFF by default, indeed its been off the entire time i was using BE. Since reading up on what bitswapping actually does I turned it on as understand it should be on at all times particularly when using g.dmt. But - turning it on seems to reduce the error count, but without fail causes the SNR to fall right down to 0.5 after around 12 hours uptime, sending the line errors through the roof , causing all trafiic to grind to a halt and resulting in a resync.
Has anyone seen anything like this before? it seems almost backwards to how bitswap should work?
cheers