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Author Topic: VDSL2 possible dual band sync?  (Read 458 times)

adslmax

  • Kitizen
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  • Posts: 1096
VDSL2 possible dual band sync?
« on: August 23, 2019, 11:53:24 AM »

Can anyones tell me why is bearer 0 get sync rate of 80/20 but bearer 1 get no sync rate of 0/0 (are these future of possible dual band sync together like 2 x 80/20 make it 160/40?)

Max:    Upstream rate = 24458 Kbps, Downstream rate = 89818 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 79999 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps (maybe future dual band sync ?)

I also notice extra addition on k10 (dBx100 below in red highlights):

xdslctl info --pbParams
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    0
Last initialization procedure status:   0
Max:    Upstream rate = 24458 Kbps, Downstream rate = 89818 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 79999 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 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) (1972,2782)
DS: (33,859) (1216,1961) (2793,3970)
VDSL Port Details               Upstream                Downstream
Attainable Net Data Rate:        24458 kbps              89818 kbps
Actual Aggregate Tx Power:          2.1 dBm                12.4 dBm
====================================================================================
  VDSL Band Status   U0   U1   U2   U3   U4   D1   D2   D3
  Line Attenuation(dB):   2.2   13.9   23.2   N/A   N/A   7.2   17.3   28.8
Signal Attenuation(dB):   2.2   13.1   22.1   N/A   N/A   9.5   17.1   28.8
        SNR Margin(dB):   12.9   9.6   11.3   N/A   N/A   7.9   8.0   7.8
         TX Power(dBm):   -12.6   -29.4   2.1   N/A   N/A   8.1   7.8   7.1
        kl0(dBx100):    650     700       N/A     N/A     N/A   552     665     730  
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GigabitEthernet

  • Kitizen
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  • Posts: 1920
Re: VDSL2 possible dual band sync?
« Reply #1 on: August 23, 2019, 01:41:48 PM »

Isn't this just for G.INP or vectoring
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j0hn

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  • Posts: 2634
Re: VDSL2 possible dual band sync?
« Reply #2 on: August 23, 2019, 02:29:15 PM »

Bearer 1 carries all the overhead messages, not just G.INP related stuff either.

You can't just double speeds by adding another bearer.
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GigabitEthernet

  • Kitizen
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  • Posts: 1920
Re: VDSL2 possible dual band sync?
« Reply #3 on: August 23, 2019, 09:49:44 PM »

Bearer 1 carries all the overhead messages, not just G.INP related stuff either.

You can't just double speeds by adding another bearer.

G.INP and vectoring?
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