Hours of instability .......
I spent many days recording the noise margin "reported" by my Netgear DG834v2 after my circuit became unstable following LLU. What I discovered was that although the device with this chipset (and another brand of modem using the same chipset) would negotiate connection at the defined noise margin, over a matter of 10-20 minutes it would deteriorate until the DSL was unusable. This seemed to be a problem that commenced with ADSL2+. I spent many many hours on the phone to my ISP trying to identify the problem but in the end I concluded the DG834 couldnt cope with a slightly noisy circuit.
I replaced it with a 2Wire 2700 from ebay and all my problems went away.... and came back with the DG834v2.... so I got rid of Mr Netgear's box and since then I've enjoyed a fairly consistent 5mbs + on a 40dB attn line about 2km from the exchange.
How refreshing to see that someone else has identified a similar problem, take heed anyone having probs with this chipset, you could be amazed how quickly the "fault" goes away when you stuff it in the bin!!!!
Biting the hand that feeds IT
