In reply to a post by MHC:

In reply to a post by farrinaf:

The only question now is do we splash out an extra £5 a month to go 80/20 ?

YES. Upstream at 28Mbps - fine. Downstream at 73Mbps - far enough above 40 to justify it. Also, remember that is a reasonably accurate predicted figure that is based around a 6dB margin so you will be around there to start. You may then find the margin drops to 5, 4, 3 dB at which point you will be getting a lot closer to 80.

Its very unlikely he'll see sub-6dB SNR due to being on an ECI cabinet but as you said should see around 70MBit for sure and if g.inp was enabled on it may get close to 80.

sub 6dB is possible on ECI cabinets unless the update that provided it has been removed or not rolled out to that cabinet.

In light of your comments, thought you might be interested to see the equivalent Draytek 130 stats from MY old (i.e. Not my mothers) now terminated FTTC connection that ran reliably at 80/20 for a number of years.

Again it was an ECI box.

vdsl status

---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
Running Mode : 17A State : SHOWTIME
DS Actual Rate : 79995000 bps US Actual Rate : 20000000 bps
DS Attainable Rate : 93428456 bps US Attainable Rate : 30184464 bps
DS Path Mode : Fast US Path Mode : Fast
DS Interleave Depth : 1 US Interleave Depth : 1
NE Current Attenuation : 12 dB Cur SNR Margin : 9 dB
DS actual PSD : 0. 1 dB US actual PSD : 0. 3 dB
NE CRC Count : 10622 FE CRC Count : 8021
NE ES Count : 6469 FE ES Count : 6274
Xdsl Reset Times : 0 Xdsl Link Times : 3
ITU Version[0] : b5004946 ITU Version[1] : 544e0000
VDSL Firmware Version : 05-07-06-0D-01-07 [with Vectoring support]
Power Management Mode : DSL_G997_PMS_L0
Test Mode : DISABLE
-------------------------------- ATU-C Info ---------------------------------
Far Current Attenuation : 10 dB Far SNR Margin : 12 dB
CO ITU Version[0] : b5004946 CO ITU Version[1] : 544eb206
DSLAM CHIPSET VENDOR : < IFTN >

I think we shall sit on the fence for a week or two to see how her line settles down and whether there are any potential speed improvements ie margin drops further (increased upload speed is particularly appealing)

In reply to a post by MHC:

sub 6dB is possible on ECI cabinets unless the update that provided it has been removed or not rolled out to that cabinet.

It isn't.

It has only ever been available on Huawei cabinets. It requires G.INP.
ECI cabinets have not got beyond trials of G.INP and none of the trials have used XdB targets.

You'll see plenty ECI lines with current SNRM below 6dB, but the target is always 6dB.

Edited by j0hn83 (Mon 03-May-21 13:58:24)

*I see John has already posted*

Edited by Grimers (Tue 04-May-21 10:45:23)

To sort of bring this thread to a conclusion, having recently upgraded the subject connection to a 80/20 (from 40/10) below are the Vigor stats which seem most satisfactory

Vigor> vdsl status
---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
Running Mode : 17A State : SHOWTIME
DS Actual Rate : 74161000 bps US Actual Rate : 20000000 bps
DS Attainable Rate : 73041336 bps US Attainable Rate : 27460048 bps
DS Path Mode : Fast US Path Mode : Fast
DS Interleave Depth : 1 US Interleave Depth : 1
NE Current Attenuation : 15 dB Cur SNR Margin : 5 dB
DS actual PSD : 4. 3 dB US actual PSD : 12. 8 dB
NE CRC Count : 10 FE CRC Count : 1788
NE ES Count : 9 FE ES Count : 1566
Xdsl Reset Times : 0 Xdsl Link Times : 2
ITU Version[0] : b5004946 ITU Version[1] : 544e0000
VDSL Firmware Version : 05-07-06-0D-01-07 [with Vectoring support]
Power Management Mode : DSL_G997_PMS_L0
Test Mode : DISABLE
-------------------------------- ATU-C Info ---------------------------------
Far Current Attenuation : 17 dB Far SNR Margin : 9 dB
CO ITU Version[0] : b5004946 CO ITU Version[1] : 544ed086
DSLAM CHIPSET VENDOR : < IFTN >