VDSL speeds have shot up!? Chorus changing to 998 bandplan.

Forums › New Zealand Broadband › VDSL speeds have shot up!? Chorus changing to 998 bandplan.

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Jarsky

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#1548039 7-May-2016 19:22

Lorenceo:

The Vigor 130 can't SNR tweak on VDSL. The DSLAM ignores any SNR related commands from it and negotiates at the value set by Chorus (9db is most common).

Thats a shame. Chorus were digging outside my house the other day, and my line disconnected.

When it came back up I noticed my speed dropped quite a bit :(

Before:

> vdsl status
---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
   Running Mode            :      17A       State                : SHOWTIME
   DS Actual Rate          : 70016000 bps   US Actual Rate       : 29980000 bps
   DS Attainable Rate      :108915280 bps   US Attainable Rate   : 36696000 bps
   DS Path Mode            :        Fast    US Path Mode         :        Fast
   DS Interleave Depth     :        0       US Interleave Depth :        0
   NE Current Attenuation :       11 dB    Cur SNR Margin       :       16 dB
   DS actual PSD           :    -2.-7 dB    US actual PSD        :    14. 5 dB

After:

> vdsl status
---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
Running Mode : 17A State : SHOWTIME
DS Actual Rate : 58664000 bps US Actual Rate : 25768000 bps
DS Attainable Rate : 58701936 bps US Attainable Rate : 25792000 bps
DS Path Mode : Fast US Path Mode : Fast
DS Interleave Depth : 0 US Interleave Depth : 0
NE Current Attenuation : 20 dB Cur SNR Margin : 8 dB
DS actual PSD : 5. 6 dB US actual PSD : 14. 5 dB

Athlonite

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#1548710 9-May-2016 14:34

Looks like your Attenuation has doubled I would ring your ISP to get on to it because whatever Chorus did has borked something

BrokenChameleon

22 posts

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#1586847 5-Jul-2016 23:34

hit cap with UL and DL for broadcom cards now the long wait for fibre

Jase2985

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#1586872 6-Jul-2016 07:15

its not really a long wait with connection stats like that

pinkydot

247 posts

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#1598543 25-Jul-2016 21:34

How do I know if the bandplan has change? I noticed had a few resync in the last few days happen around 4:10 in the morning. Seem to be bouncing around 44 45 46 for the DS and US 8 or 9

I'm not sure which DLM profile i'm on.

Below is the stat

---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
   Running Mode            :       8B       State                : SHOWTIME
   DS Actual Rate          : 45404000 bps   US Actual Rate       : 8568000 bps
   DS Attainable Rate      : 45420288 bps   US Attainable Rate   : 8568000 bps
   DS Path Mode            :        Fast    US Path Mode         :        Fast
   DS Interleave Depth     :        0       US Interleave Depth :        0
   NE Current Attenuation :       14 dB    Cur SNR Margin       :       12 dB
   DS actual PSD           :    -6.-9 dB    US actual PSD        :    15. 3 dB
   NE CRC Count            :        0       FE CRC Count         :        0
   NE ES Count             :        0       FE ES Count         :        0
   Xdsl Reset Times        :        0       Xdsl Link Times     :        5
   ITU Version[0]          : b5004946       ITU Version[1]       : 544e0000
   VDSL Firmware Version   : 05-04-08-00-00-06
   Power Management Mode   : DSL_G997_PMS_L0
   Test Mode               : DISABLE
-------------------------------- ATU-C Info ---------------------------------
   Far Current Attenuation :        0 dB    Far SNR Margin       :       11 dB
   CO ITU Version[0]       : b500494b       CO ITU Version[1]    : 4e530001
   DSLAM CHIPSET VENDOR    : < IKNS >

hio77

'That VDSL Cat'
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#1598574 25-Jul-2016 21:43

That is DLM not bandplan changes.

Bandplan changes are already well in truly in.

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pinkydot

247 posts

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#1598615 25-Jul-2016 22:52

hio77:

That is DLM not bandplan changes.

Bandplan changes are already well in truly in.

Oh ok thanks. Base on the stat is it able to find out which DLM profile i'm on it?

hio77

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#1598621 25-Jul-2016 23:17

pinkydot:

hio77:

That is DLM not bandplan changes.

Bandplan changes are already well in truly in.

Oh ok thanks. Base on the stat is it able to find out which DLM profile i'm on it?

Your currently on DLM-1, an 8b Profile. Your snr is riding a little high which is odd unless DLM has decided to shift you to a 12dB profile (which is very uncommon for 8b lines)

#include <std_disclaimer>

Any comments made are personal opinion and do not reflect directly on the position my current or past employers may have.

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