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[roseway]

All it means is that the interference level varies a bit over time, which is perfectly normal, and this time the re-sync occurred at a time when the interference was low. So it reconnected at a rather higher speed than before, but since then the interference level has increased a bit, lowering the noise margin.

[UncleUB]

Thanks Eric,I don't think I have ever had an snr as low as this.12 months ago the average was about 14 to 15

[kitz]

Its kind of like a trade-off.
Higher SNR is better... but as your connection speed increases, then your SNRM will decline.

Whats likely happened is that last time your router resynched, the SNRM was good, so you got a higher speed.
However SNR does fluctuate during the day..  this is normal.. and likely because the synch speed was higher.. the SNRM is now lower, as things have settled "back to normal".

Hope that makes sense.

[kitz]

whoops sorry - didnt realise there was a page 4 until after I'd posted my reply 

Sorry eric hadnt seen your reply.   EOP failure. 

[roseway]

Two answers are better than no answers.

[UncleUB]

Thats right Eric,and both much appreciated 

[kitz]

I'm having an EOP failure day today.   -   

Ive just pulled a long post from another thread which I hadnt realised also had a next  page
I think I'll go back to bed and hibernate for the day 

[UncleUB]

Another re-sync an hour ago,slightly higher snr and a lot less HEC errors,before 10972,now 4?Downstream speed dropped from 2240 to 1984

 Line Mode G.DMT   Line State Show Time 
 Latency Type Interleave   Line Up Time 00:00:56:43 
 Line Coding Trellis On   Line Up Count 7 
   
 Statistics Downstream Upstream 
 Line Rate 1984 Kbps 448 Kbps 
 Noise Margin 4.9 dB 12.0 dB 
 Line Attenuation 63.5 dB 31.5 dB 
 Output Power 17.6 dBm 12.4 dBm 
 K (number of bytes in DMT frame) 63 15 
 R (number of check bytes in RS code word) 16 16 
 S (RS code word size in DMT frame) 2 8 
 D (interleaver depth) 16 4 
 Super Frames 200186  200184   
 Super Frame Errors 5  0   
 RS Words 6806336  1701564   
 RS Correctable Errors 69233  24   
 RS Uncorrectable Errors 17  0   
 HEC Errors 4  0   
 OCD Errors 0  0   
 LCD Errors 0  0   
 ES Errors 0  0   
 

[roseway]

The errors are the totals since the last re-sync. The previous set of figures were for two days+ uptime, but the last set are for less than an hour. So you can't compare them.

[UncleUB]

Yet another re-sync at about 7.15 this morning.One thing I have noticed is my interleaver depth has gone down from 16down 4up to 8 down and 4 up.Is this to do with your line stability.


 
Broadband Line Status
 
    RefreshReset

   
 Line Mode G.DMT   Line State Show Time 
 Latency Type Interleave   Line Up Time 00:00:46:39 
 Line Coding Trellis On   Line Up Count 8 
   
 Statistics Downstream Upstream 
 Line Rate 1856 Kbps 448 Kbps 
 Noise Margin 6.5 dB 12.0 dB 
 Line Attenuation 63.5 dB 31.5 dB 
 Output Power 17.5 dBm 12.4 dBm 
 K (number of bytes in DMT frame) 59 15 
 R (number of check bytes in RS code word) 16 16 
 S (RS code word size in DMT frame) 4 8 
 D (interleaver depth) 8 4 
 Super Frames 164668  164666   
 Super Frame Errors 2  0   
 RS Words 2799360  1399661   
 RS Correctable Errors 10674  6   
 RS Uncorrectable Errors 8  0   
 HEC Errors 2  0   
 OCD Errors 0  0   
 LCD Errors 0  0   
 ES Errors 0  0 
 
Also just did a BTspeedtester test

IP profile = 1250kbps
1856 down 448 up
actual achieved during the test = 1179.

I think my IP profile should be 1500kbps when the line adjusts its self.

[roseway]

I think you have to accept that the high level of stability which you previously enjoyed was quite unusual for a long line like yours. Periodic dropped connections and smallish variations in the speed are much more like the norm.