For the last three weeks or so I have been getting this message in my routers logs.
It is unpredictable but happens usually every other day once or twice when the WAN uptime zeroes and starts again.
Since looking into this by running RouterStats I have discovered that although LCP is going down and reconnecting the modem is not losing sync and the connection speed is rock steady all the time as is the SNR even when LCP is lost. I have not seen this before, loss of connection but not line sync.
Line stats are:
Connection speed 4651 kbps 915 kbps
Line Attenuation 53.0 db 33.1 db
Noise Margin 7.1 db 6.2 db
Interleaving does not show as being on or off unless the line 'Channel: Fast ' means it is not set to on.
Router = Netgear DG834GT
The exchange (Blewbury) went to 21CN last month and I am pleased with the extra 0.5MB but not the now unreliable connection. Not that I am blaming the upgrade for the problems but it may be related. I get the discons whether the modem is set to G.DMT or ADSL2+ (G.992.5)
My ISP (Plusnet) say there is nothing wrong with my line and therefore they cannot do anything until I get several disconnections in one day. They are probaby right to say that as the line and SNR are stable but of course the connection is not.
I don't find that very satisfactory so what can I tell them to get this looked into more deeply.