Apologies for waking up this thread but the information seems fairly relevant to what I'm experiencing with my EE Brightbox.

The Interleaved Path FEC Correction and CRC Error stats are constantly increasing.

My US and DS Noise Margin values are 5.1 and 3.0dB respectively. Having looked up the term "Noise Margin" and seeing that it's used as a synonym of SNR on most routers, I would assume that the low Noise Margin I am seeing is due to a high level of noise on the line.

Instead in this thread, people are suggesting that the Noise Margin should drop as the line remains stable for a sustained period of time.

I also noticed that my router switched to 7173kbps (from about 2048kbps) recently. Considering that my line is showing so many errors and I'm seeing slowness, why is the speed not being dropped?

Also I see that my ADSL mode is ADSL 2+. Do you think that my line may have been switched to ADSL 2+ recently?

Error counts do constantly increase. The Q is how quickly? Plse post your full router ADSL Stats + Time Connected from top Status page.

A 3dB NM (a synonym for SNRM) is the standard NM for a good line. A low value indicates that it does not need much margin to overcome noise.

If you were on 2048K Sync you were probably being capped and now are not.

What exchange are you connected to?

Here are the stats. I am trying to figure out why the connection keeps getting lost.

Broadband Type: ADSL
Broadband State: Connected
Internet State: Connected
Time Connected: 00:24:07
Downstream Rate: 7051kbps
Upstream Rate: 834kbps

ADSL STATUS

This page shows information about your ADSL connection if applicable.

Status
Configured Current
Line Status --- SHOWTIME
Link Type --- Interleaved Path
Operation Mode Automatic G992.5(ADSL2+)
Data Rate Information
Stream Type Actual Data Rate
Upstream 834 (Kbps.)
Downstream 7051 (Kbps.)
Defect/Failure Indication
Operation Data Upstream Downstream
Noise Margin 9.8 dB 3.1 dB
Line Attenuation 23.2 dB 42.5 dB
Indicator Name Near End Indicator Far End Indicator
Output Power 12.8 dBm 0.0 dBm
Fast Path FEC Correction NA NA
Interleaved Path FEC Correction 44114 0
Fast Path CRC Error NA NA
Interleaved Path CRC Error 17 0
Loss of Signal Defect 0 0
Fast Path HEC Error STR NA NA
Interleaved Path HEC Error 87 0
Error Seconds 13 1
Statistics
Received Cells 759493
Transmitted Cells 150921

Stats are good but slightly, 1 Meg, slow.