This is a follow on from post http://community.bt.com/t5/BB-Speed-Connection-Issues/Another-spped-issue-100k-out-of-a-potential-60...
With Forum and Mod help, it’s come a long way since then and is now stable at 4mb to 5mb depending on which speedtest I do. Thanks to everyone that set me on the right path.
However, noise margin is stuck at 15db, so I think I need to ask for Mod help again and need to leave details here for them to look at!
HH3 router is connected directly to a ADSL V1.0 faceplate via twisted pair ADSL cable.
HH3 is powered from a Tacima rfi filtered power block.
From the results below, I’m thinking I should ask for interleaved to be turned back on and a target noise margin reset? Does that sound sensible?
Line attenuation is 30db.
Connection Time, Interleaving, Downstream Connection, Downstream Noise Margin, Speedtest.net results, BT speedtester results.
10th December – Wiring and position sorted for HH3
00d00h00m, Fast, 5.031Mbps, 15db 3.98Mbps @ 38ms
02d01h25m, Fast, 5.031, 14.9db, 3.95Mbps @ 35ms
03d01h37m, Fast, 5.031, 15.8db, 4.33Mbps @ 34ms
13th December - Unforced reconnect during stormy weather
00d03h54m, Fast, 5.031, 15.6db, 4.45Mbps @ 32ms
01d16h42m, Fast, 5.031,9.4db
07d05h33m, Fast, 5.031, 14.5, 4.9Mbps @ 25ms,
25th December - Unforced reconnect after 11 days
02d09h37m, Fast, 5.031, 15.7db, 4.67Mbps @ 31ms
08d12h17m, Fast, 5.031, 15.9db
3rd January, Manual Reset after 8 days to check Target Noise Margin.
00d00h00m, Fast, 5.031, 15.2db, 4.79Mbps @ 55ms, 4075Kbps @ 4500
00d22h55m, Fast, 5.031, 14.7db, 4.53Mbps @ 29ms, 4125Kbps @ 4500
07d02h40m, Fast, 5.031, 14.6db, 5.15Mbps @ 25ms, 4127Kbps @ 4500
Many thanks again,
I would agree and contact the mods to get your noise margin reset to 6db and corresponding increase in speed. you could get changed to interleaved or just leave and see what affect the noise margin reset has and if required then get latency changed to interleaved http://bt.custhelp.com/app/contact_email/c/4951
Throughout 2010 my sync speed was typically 7232kbps and my IP Profile at 6000kbps. During the past 15 months we have experienced three significant line faults (one by a fencing contractor driving a post through a cable and two due to lines through trees being damaged during storms). On each of these occasions my IP Profile dropped to less than 1000kbps but of course recovered when the faults were repaired. After the first two faults the IP Profile only recovered to 5500kbps, disappointing but didn't seem worth worrying about. However, after the last fault (during which IP Profile fell to 250kbps, it only recovered to 5000kbps.
From some notes I made during 2010 (when my IP Profile was at 6000kbps), I see that my downstream Noise Margin was 12.2dB. It is now 15.4dB. I had assumed that, like IP Profile, this was a parameter that was automatically adjusted in the bRAS.
From posts I have read on this forum it would appear that the SNR Margin can 'get stuck' - If so, how do I get it reset.
ADSL line status
|Connection time||43 days, 8:28:16|
|Noise margin (Down/Up)||15.2 dB / 20.0 dB|
|Line attenuation (Down/Up)||32.0 dB / 18.0 dB|
|Output power (Down/Up)||19.8 dBm / 12.1 dBm|
|Loss of Framing (Local)||0|
|Loss of Signal (Local)||0|
|Loss of Power (Local)||0|
|FEC Errors (Down/Up)||0 / 0|
|CRC Errors (Down/Up)||63768 / N/A|
|HEC Errors (Down/Up)||N/A / 68|
|Error Seconds (Local)||61339|
Our exchange is ADSL Max
I am 2500m (measured line length) from the exchange
My ISP is BT
contact the mods and ask for NM to be reset to 6
can take up to 3 days for mods to contact you