In reply to a post by MrGimper:

Now it's possible to get into the modem, does this mean we can tweak the SNR margins like we could on ADSL?

And we wonder why BT have arranged for the Huawei to be disabled by default

if it does work It will only work for people who are not already on 40mb sync.

guys, sorry to hijack this thread slightly,

But, i have been running a Vigor 2750n for quite some time (Got it working back in March http://forums.thinkbroadband.com/fibre/t/3976302-re-... )

Anyway, i have been having some issues with disconnects since Infinity was installed in March, and last week my whole connection and telephone line went dead!

Raised this with BT, and they came and fixed it yesterday, said there were multiple issues with the line outside the house etc.

So, i checked my stats, and saw i was only connected at 13mb (had about 34mb before) or something like that, and thought i would leave it for a day to see if it needed to work its self out. But today its at 11mb now, so its going down!

Can someone look over my stats, and see what they think... i recon an Upstream SNR 300 and a Downstream SNR of 200db ish is surly a problem??

VDSL
Link Status Showtime
Firmware Version 1411f0
VDSL2 Profile 8c
Basic Status Upstream Downstream Unit
Actual Data Rate 798 11394 Kb/s
SNR 310 218 0.1dB
Advance Status Upstream Downstream Unit
Actual delay 8 16 ms
Actual INP 43 80 0.1 symbols
15M CV 0 0 counter
1Day CV 31 0 counter
15M FEC 0 208 counter
1Day FEC 9591 208 counter
Total FEC 9591 208 counter
Previous Data Rate 0 0 Kbps
Attainable Rate 16296 25929 Kbps
Electrical Length 83 83 0.1 dB
SNR Margin N/A N/A (US0,--) 0.1 dB
SNR Margin 310 218 (US1,DS1) 0.1 dB
SNR Margin N/A 218 (US2,DS2) 0.1 dB
SNR Margin N/A N/A (US3,DS3) 0.1 dB
SNR Margin N/A N/A (US4,DS4) 0.1 dB
15M Elapsed time 810 810 secs
15M FECS 0 1 counter
15M ES 0 0 counter
15M SES 0 0 counter
15M LOSS 0 0 counter
15M UAS 0 0 counter
1Day Elapsed time 72810 72810 secs
1Day FECS 169 1 counter
1Day ES 13 0 counter
1Day SES 0 0 counter
1Day LOSS 0 0 counter
1Day UAS 466019 28 counter
Total FECS 169 1 counter
Total ES 13 0 counter
Total SES 0 0 counter
Total LOSS 0 0 counter
Total UAS 466019 28 counter

Does this still require BT to Fix do you think?

Edited by willuk2010 (Mon 12-Sep-11 22:01:05)

Look at these then, bet your all jealous! :rolleyes:

Aluminium line for you thats 1060m long.

[IMG]http://img14.imageshack.us/img14/2217/fibreeeeeeeeee...[/IMG]

In reply to a post by Adsl24:

You could try the usual broadcom SNR trick, with the new xdslcmd tool:

*USE WITH CAUTION*

xdslcmd configure --snr XX

XX being the percent of SNR to reduce by. E.g. XX = 50 means reduce the current target SNR by 50%. So if it was 6dB it would go to 3dB.

I confirm this works on my ADSL2+ line on the unlocked modem, can't test on a VDSL2 line yet.


Let me know.

I tried this today after the line synced my snr was showing 257.4 for a few seconds then went to 6, so Im not sure if it worked. But my line rate went up to 28686 from 27134 but my ip profile is stuck at 26.249. Can the ip profile go up on it's own over time?

Edited by Cottee55 (Tue 13-Sep-11 12:56:01)

Yes the IP profile is directly linked with the SYNC speed so it will go up shortly. Its much faster at updating itself (on FTTC using Openreach's DLM) as opposed to BT Wholesales DLM.

Have left the modem alone for a few days since flashing the new firmware. Here is a screenshot of the stats:

http://i11.photobucket.com/albums/a156/Nelix/ORModem...

Edited by nelix01 (Tue 13-Sep-11 18:41:12)

your upload speed is same as mine 9995, seen others with 9999.. strange?

Good stats, mine has been in sync for 3 days now with no crc errors at all like yours.

Theres something very odd with my stats, its going down, 9995mb download now, altho it looks like my attainable rate is 25mb.

Vigor Stats

Links a bit easier to read than the pasting of text!

Any ideas anyone?

If you look again the reported SNR is displayed as a unit of 0.1dB, therefore it's not 310dB / 218dB but 31 and 21.8 respectively. Still too high though, looks like you are on a capped SYNC speed profile at the DSLAM.