My line has been dodgy as hell since the local telco (and only copper owning ISP) moved to soft exchanges, dubbed "Next Generation Network", shipped in from the far east, not designed for the EU market and in short the whole thing was...to say the least, not that smooth.
Regardless, since being put on 8mbit (ADSL2+) my line, almost every day at 2300+- 5-10 minutes will disconnect. It also randomly disconnects and re-trains outside of the seemingly fixed times. I have logged many, many calls and got nowhere. So I dumped full SNMP values of almost every sensor on my Cisco and logged away.
I have a whole weekends of data and strangely the most stable probe is my Upload Noise Margin. The least is Download Noise Margin which in raw data (you cannot see due to tiny intervals) follows a rather consistent trend. Line trains, anywhere between 17-21dB of Noise Margin and slowly degrades, an erroneous 32,000dB value is logged and the line will drop there and then, or a few more low (2-7dB) values get logged and THEN the line drops.
Less frequently but also quite "clockworky" is a disconnect at around 4am. When you look at the graph which is linked at the bottom take a close look at the Noise Margin value at around this time. Sharp decline.
The telco has blamed everything they could possibly think of on me. My central heating, electrical noise, other phones, cabling, my line termination point. On the old G.DMT 2Mbit DSL service my line was ROCK solid. Yes, adsl2+ are different frequencies, I understand this but I simply do not believe anything is at fault with me. My house is cabled in cat5e and I have fiddled with EVERY source of electrical noise in the house to try stimulate my 2300 disconnects, nada.
Here is the data I pulled as of the last couple of days.
PDF Data
The trend is alarmingly obvious. 8am till ~4pm sees solid, consistent Download Noise Margin. ~4pm till 8am it yo-yos. The interval is only at 1 hour averages but RAW data will show it going as low as 0.50, the erroneous 32,000 vales are filtered out for the sake of graph scaling. outside of the "regular" night time spiking you can see the 4am drop.
This data will be sent off tomorrow to my ISP, my line already dropped at 23:13 tonight, no doubt my Download Noise Margin will yo-yo till 8am where it will recover and hold steady. The cutout on the 25th was due to the power in the house being off.
Ideas?
Regardless, since being put on 8mbit (ADSL2+) my line, almost every day at 2300+- 5-10 minutes will disconnect. It also randomly disconnects and re-trains outside of the seemingly fixed times. I have logged many, many calls and got nowhere. So I dumped full SNMP values of almost every sensor on my Cisco and logged away.
I have a whole weekends of data and strangely the most stable probe is my Upload Noise Margin. The least is Download Noise Margin which in raw data (you cannot see due to tiny intervals) follows a rather consistent trend. Line trains, anywhere between 17-21dB of Noise Margin and slowly degrades, an erroneous 32,000dB value is logged and the line will drop there and then, or a few more low (2-7dB) values get logged and THEN the line drops.
Less frequently but also quite "clockworky" is a disconnect at around 4am. When you look at the graph which is linked at the bottom take a close look at the Noise Margin value at around this time. Sharp decline.
The telco has blamed everything they could possibly think of on me. My central heating, electrical noise, other phones, cabling, my line termination point. On the old G.DMT 2Mbit DSL service my line was ROCK solid. Yes, adsl2+ are different frequencies, I understand this but I simply do not believe anything is at fault with me. My house is cabled in cat5e and I have fiddled with EVERY source of electrical noise in the house to try stimulate my 2300 disconnects, nada.
Here is the data I pulled as of the last couple of days.
PDF Data
The trend is alarmingly obvious. 8am till ~4pm sees solid, consistent Download Noise Margin. ~4pm till 8am it yo-yos. The interval is only at 1 hour averages but RAW data will show it going as low as 0.50, the erroneous 32,000 vales are filtered out for the sake of graph scaling. outside of the "regular" night time spiking you can see the 4am drop.
This data will be sent off tomorrow to my ISP, my line already dropped at 23:13 tonight, no doubt my Download Noise Margin will yo-yo till 8am where it will recover and hold steady. The cutout on the 25th was due to the power in the house being off.
Ideas?