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[Ducky]

Just wondered if anyone knew, but my upload 'attainable' has always been about double what I actually get, and it never syncs any higher.  This has been the same all year.

Wondered if it should actually sync higher, or it's behind held back by something?

Stats are on 'MyDSL' site.

cheers

[NewtronStar]

I think at look at your pbParams would give someone on the forum a better clue on why your US line sync is not matching your US attainable.

Had a look at your US 1 tones and they are small you only have 1 bit loaded, you must be on the faster broadband service not infinity 

An your on a very long line hence your DS sync rate and Low US sync rate.

[Ducky]

Where do I find those stats on DSLStats dude? thx

[NewtronStar]

Where do I find those stats on DSLStats dude? thx

Here a screenshot for guidence

[Chrysalis]

I havent replied as currently too lazy to check MDWS, if you post the info I will make a comment.

[Chrysalis]

had a look, only explanation is its capped.

[boe323]

Can I get an explaination as to why my upstream U2 path has been cut off, modem did a resync this morning ans I only have U0 U1
xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason:   1
Last initialization procedure status:   0
Max:   Upstream rate = 7096 Kbps, Downstream rate = 61760 Kbps
Bearer:   0, Upstream rate = 7006 Kbps, Downstream rate = 54574 Kbps

Discovery Phase (Initial) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2793,3970)
Medley Phase (Final) Band Plan
US: (7,32) (871,1205)
DS: (33,859) (1216,1961) (2793,3870)
     VDSL Port Details        Upstream        Downstream
Attainable Net Data Rate:        7096 kbps          61760 kbps
Actual Aggregate Tx Power:      -   6.3 dBm           12.4 dBm
====================================================================================
  VDSL Band Status   U0   U1   U2   U3   U4   D1   D2   D3
  Line Attenuation(dB):   6.2   36.0   N/A   N/A   N/A   16.7   44.3   67.9
Signal Attenuation(dB):   6.2   35.1   N/A   N/A   N/A   19.7   44.0   68.7
        SNR Margin(dB):   6.2   6.1   N/A   N/A   N/A   5.9   5.9   5.9
         TX Power(dBm):   -17.4   -6.7   N/A   N/A   N/A   8.4   8.0   6.4
#

[kitz]

Can I get an explaination as to why my upstream U2 path has been cut off, modem did a resync this morning ans I only have U0 U1

From looking at your bitloading graph, your line isnt capable of using many tones in U1, - nor any tones past 1000,
So theres no point in leaving U2 which uses tones 1972-2782 open.


Lines that are interleaved often show attainable speeds far more than their actual sync rate.   This is because error correction carries overheads for redundancy.   You dont 'see' this data overhead when you do a speedtest, but it is always there.   How much the difference between the two depends on the amount of INP and depth of interleaving..   but because you are fixed at 800 then it certainly looks like you are capped. 

Presently Im banded at 15000, but my attainable shows as 26354.

[Ducky]

My pd stats.

xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason:   0
Last initialization procedure status:   0
Max:   Upstream rate = 1589 Kbps, Downstream rate = 20476 Kbps
Bearer:   0, Upstream rate = 800 Kbps, Downstream rate = 17929 Kbps

Discovery Phase (Initial) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2793,3970)
Medley Phase (Final) Band Plan
US: (7,32) (871,1038)
DS: (33,859)
     VDSL Port Details        Upstream        Downstream
Attainable Net Data Rate:        1589 kbps          20476 kbps
Actual Aggregate Tx Power:          2.6 dBm            9.8 dBm
====================================================================================
  VDSL Band Status   U0   U1   U2   U3   U4   D1   D2   D3
  Line Attenuation(dB):   11.7   64.8   N/A   N/A   N/A   25.2   80.1   N/A
Signal Attenuation(dB):   11.7   62.9   N/A   N/A   N/A   40.2   N/A   N/A
        SNR Margin(dB):   11.1   9.7   N/A   N/A   N/A   6.8   N/A   N/A
         TX Power(dBm):   0.6   -1.5   N/A   N/A   N/A   9.8   N/A   N/A
#

[boe323]

Thankyou for info, my lines upstream as been up and down in speed since I had my first reset at the cab, before the reset my upstream was 1500, then dropped to around 900/1000, for a few years now, just the other day had that terrible wind (not me, the weather lol), now U2 as been turned off, took it a long time to decide I cant use it lol. If you look at mywebstats boe323- ,snrm for the last 10 days, you can see where the problem started, just as the winds started to get bad. my download speed as started to rise lol, don't make sense to me, I should only be capable of 40meg at most according to the checker, im on high for download and impacted for upload, how does that work lol, if I can handle good download speeds surely my line can handle good upload, its the same cable ?

[Ducky]

I think at look at your pbParams would give someone on the forum a better clue on why your US line sync is not matching your US attainable.
Had a look at your US 1 tones and they are small you only have 1 bit loaded, you must be on the faster broadband service not infinity 
An your on a very long line hence your DS sync rate and Low US sync rate.

I am on the faster broadband service, they couldn't offer infinity because the line is too long I guess.  Still fiber but reduced performance.

You think that's why my US is stuck at 800?

thx

[NewtronStar]

Hello Ducky if you look at your Discovery Phase (Initial) Band Plan US: (7,32) (871,1205) (1972,2782) and compare that to your Medley Phase (Final) Band Plan US: (7,32) (871,1038) you can see your not able to make use of all the tones in the U1 band, so I guess thats why your only able get 800 kbps upload.

This is only my less experienced interpretation BaldEagle1 could give you a better answer to the reason why your Upstream is not closer to Attainable 

[kitz]

im on high for download and impacted for upload, how does that work lol, if I can handle good download speeds surely my line can handle good upload, its the same cable ?

But its not the same frequencies in use. Upstream and downstream use different frequency bands.   The higher the frequency, the less likely they are to bitload.
Also upstream quite often has PCB applied to prevent far end crosstalk with other lines.

you can see your not able to make use of all the tones in the U1 band, so I guess thats why your only able get 800 kbps upload.

Yep agree.  I mentioned the inability to make use of any tones above tone 1000 in my earlier post.

If the OP wants to understand more whats going on then reading about DMT and bit loading may help.  It was written specifically for adsl, but the theory for vdsl is exactly the same.... aside from vdsl uses more tones and separate bands..  and at much higher frequencies.