With some professional help I now know my cable length is 1225 mts against BTW saying it's 1400 and I would be grateful for any comments on the attached graphs.
My starting point is of course I would like it to be faster !, it has been pointed out My 612 does not have the latest firmware which would gain a bit more throughput but I did not want the complication of the upgrade removing the GUI Etc and I'll probably put my ECI/r back later or I may buy a integrated unit.
If you do that, you will lose access to the detailed stats.
The bcm96368MVWG_fs_kernel_HG612V100R001C01B030SP06_unlockedgui firmware image from the
'Experimental' area accessed via the link below appears to work very well & it does re-enble the GUI:-
https://mega.co.nz/#F!LdJFDIJL!e_E1twsIg2kTet8mPjrb4wUnlike the original firmware images, the updated images do also report US data for QLN, SNR & Hlog.
Do you think that 1225 mts would be long enough to prevent anything over tone 1149 being usable ?
In a word, yes.
The BTW website estimate was 23.7-17 and 4.7 - 2.8, as the max it looked as though I was going to get was 25 Mb I ordered a 40/10 package and I wonder how the restriction is done and might there be an error in it's setup ?.
My ADSL router reported a line attenuation of 63.5, whilst I understand that was probably the highest number it could display and so could have been higher, I was getting 1.34/0.448 on some 4850 mts of cable, if I have understood correctly the HG612 is reporting 25.7, 75.8 and 102.3 on higher frequency signals, do these look reasonable ?.
They look reasonable for a line length of 1225m or slightly longer, when taking any 'slack', up & down the pole, drop wire length etc. into acount.
At anything over 70dB Line Attenuation, signal attenuation is likely to be even worse i.e. unuseable.
The updated images do now show Signal attenuation differently:-
VDSL Band Status U0 U1 U2 U3 U4 D1 D2 D3
Line Attenuation(dB): 8.0 52.6 N/A N/A N/A 21.5 64.6 N/A
Signal Attenuation(dB): 8.0 52.3 N/A N/A N/A 30.1 64.3 N/AI was also intrigued to learn that the old ADSL Dslam was not disconnected at the time of the FTTC install as I would have thought it would/might cause interference with them both active but I'm told the Fibre Dslam contains a filter removing them.
I have Googled Quiet Line Test but have not found anything that might explain the graph here, is it good or bad ?.
It has a reasonable base level of around -140dB, but the many spikes to -120dB or so do indicate quite a lot of noise 'interference' at the time the connection resynced
The xdslcmd page shows a Max downstream is 25200 using 20114 and a upstream rate of 15604 and using 2651, is that an error of the program ?, my actual upstream rate is below the BTW estimate and the up is above the lowest.
15604 Kbps Attainable (Max) US is impossible over your line length.
2651 Kbps is more realistic.
I would very much like to see the raw data from the Plink log that was used to generate your montage.
Something isn't right.
Are you able to zip that Plink log down to a size that can be posted in this forum?
There is no way that US SNR can really be 6502.4 dB as shown in the xdslcmd info --show data.
Neither can all the US SNRM data actually be N/A as shown in the xdslcmd info --pbParams data.
Does the Portrait montage also show the same (incorrect) data?
If so, my 'guess' is that you have somehow gathered spurious data.
Maybe the modem was in mid-flow of updating its stored data just at the same time you obtained the data to generate the graphs.
All the data shown in your montage from 1st March is more realistic.
And finally, do the Adsl BRAS step rates apply in the same way to Vdsl as there seems to be quite a big step between 25Mb max and 20Mb achieved ?.
I am mindful that BE1 has reported a sync rate on a similar line length of 30/7 (yes please )
Your connection has a DS Interleaving depth of 467 (fairly low), but US Interleaving depth of 57 is quite high (it is usually only 1, i.e. OFF on a problem free connection).
Do you have any ongoing graphs/data that we could see to determine if there is any obvious pattern to the noise 'interference' levels?
Finally, your Hlog graph has worsened since 1st March, indicating a possible issue.
Even though it's not at tones/frequencies your connection can actually use, it MIGHT be having some effect on those it can use.