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john46
Distinguished Sage
353 Views
Message 11 of 15

Re: Profile Change Request

the twisted pair from your home to the DP may be the same quality however the pairs from the DP to the cabinet and onwards to the exchange can certainly be very different and that can and does show different characteristics on lines also different exchange equipment in use between Sky and BT will cause variations
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john46
Distinguished Sage
352 Views
Message 12 of 15

Re: Profile Change Request

as I posted this is a customer to customer forum moderated by BT
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Kamehameha
Aspiring Contributor
342 Views
Message 13 of 15

Re: Profile Change Request

Both pairs are a part of the same cable. I will be really impressed to see different stats on individual pairs within the same ethernet cable, don't think it will be different here as well. The proof here is that at the physics level lines are identical - stats proves it so I will not accept an explanation that "all lines are different", that is a pure simplification. Like I said I accept that hardware could be different, but it will not justify 25% performance difference. And since it is moderated by BT, that's really great, maybe they will have a look at it at some point, and consider changing the culture of "do whatever it takes not to let customers pass the first line of defence". Nothing personal, they are great script readers.

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DavidM
Moderator
Moderator
334 Views
Message 14 of 15

Re: Profile Change Request

Hi @Kamehameha and thanks for posting.

 

Can you post your helpdesk details? You'll find them in Troubleshooting/Helpdesk on the web interface at http://192.168.1.254 or http://bthomehub.home or if you don't have those details can you run a speed test including the further diagnostics and post the results.

 

Cheers

 

David

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Kamehameha
Aspiring Contributor
313 Views
Message 15 of 15

Re: Profile Change Request

David,

 

Thanks for looking into it. I don't have a BT Homehub, I use Vigor 2860ac which is alo on offer from BT for business customers. I have performed the test, and results are attached. Also I am attaching the router stats (from console, below; connection time - 00:41:20. SNR is 4db, but usually it drops to 2db, I think it didn't like me running the test and disconnecting several times). Test environment: Router plugged into BT MK3 2014 socket, no additional wirng/lines/etc. WAN2 interface (fed from a aparallel Sky line) disconnected; all etherenet connections unplugged. Wireless deactivated. Laptop directly connected via ethernet to the router. MacOS X; created a clean configuration. Browser: Chrome.

 

 

Stat_BTw1.jpg

Thanks again.

 

Also, just in case attaching stats for the parallel (sky) line.

 

Stat_Sky1.jpg

Router Stats (BT ADSL WAN1 Vigor 2860AC)
 
 
Type ? for command help
adsl status

  --------------------------- ATU-R Info (hw: annex A, f/w: annex A) -----------
   Running Mode            : ADSL2+ Annex A       State                : SHOWTIME
   DS Actual Rate          : 17407000 bps   US Actual Rate       :  1121000 bps
   DS Attainable Rate      : 17972000 bps   US Attainable Rate   :  1124000 bps
   DS Path Mode            :  Interleave    US Path Mode         :  Interleave 
   DS Interleave Depth     :      320       US Interleave Depth  :        4 
   NE Current Attenuation  :       19 dB    Cur SNR Margin       :        4  dB
   DS actual PSD           :    20. 2 dB    US actual PSD        :    12. 2  dB
   NE Rcvd Cells           :  4612279       NE Xmitted Cells     :  3549385
   NE CRC Count            :       10       FE CRC Count         :        0
   NE ES Count             :        6       FE  ES Count         :        0
   Xdsl Reset Times        :        0       Xdsl Link  Times     :        1
   ITU Version[0]          : b5004946       ITU Version[1]       : 544e0000
   ADSL Firmware Version   : 05-07-01-08-00-01 
   Power Management Mode   : DSL_G997_PMS_L0 
   Test Mode               : DISABLE 
  -------------------------------- ATU-C Info ---------------------------------
   Far Current Attenuation :        9 dB    Far SNR Margin       :        6  dB
   CO ITU Version[0]       : b5004946       CO ITU Version[1]    : 544e71c8
   DSLAM CHIPSET VENDOR    : < IFTN >
adsl snr

Usage:
adsl snr [delta]
  delta: SNR margin delta. The SNR margin delta should range from -50 to 50.
  delta=1 means 0.1dB.
  Current ADSL SNR Margin is 4 dB.
  Current ADSL SNR Margin delta setting is 0.
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