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[lf2k]

Just thinking out aloud...

Could there be aluminium on the D side?

Would it be possible for this to skew the line length calculation the OR people reported?

[Dray]

I don't think aluminium cable would have been laid between May 20 and Jun 5.

[lf2k]

 
That's not what I meant... Its been there all along, but is responsible for the randomness of the performance.

[Dray]

I can't see them using Ali on a new build estate.

[GigabitEthernet]

I just cannot see how you got 70Mbps. It would seem to defy physics.

[Ronski]

It's a new build estate so perhaps the copper is in very good condition or they used thicker gauge, also he suggests problems with the cabinet, perhaps it was transmitting at full power/no masking. It certainly would have been interesting to have stats from the start. Although it does seem unlikely.

OP. Have you measured the most likely route from your house to the cab on Google maps or walk jog run website?

[Black Sheep]

For info purposes, just because it's a new estate it doesn't automatically follow it will be new copper cable all the way back to the Cab.

It depends on the size of the estate, and whether there is spare capacity in legacy cables that can be 'picked up' to feed the new estate. The planners will perform this operation.

[carrtim1]

Hi ya

It's a good one isn't it, very baffling. Flies in the face of what is known to be industrial standard facts. I've attached a stir shot I took on the day it was installed and it remained like this till June 5th.

[Dray]

Can you post the output of the pbParams command please?

xdslcmd info --pbParams

[carrtim1]

Hi ya

Here you go# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason:   0
Last initialization procedure status:   0
Max:   Upstream rate = 15348 Kbps, Downstream rate = 47652 Kbps
Bearer:   0, Upstream rate = 15456 Kbps, Downstream rate = 48180 Kbps

Discovery Phase (Initial) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2793,3959)
Medley Phase (Final) Band Plan
US: (7,32) (871,1205) (1972,2770)
DS: (33,859) (1216,1961) (2793,3959)
        VDSL Port Details        Upstream        Downstream
Attainable Net Data Rate:       15348 kbps          47652 kbps
Actual Aggregate Tx Power:          7.6 dBm           13.8 dBm
====================================================================================
   VDSL Band Status      U0      U1      U2   U3      U4      D1      D2      D3
  Line Attenuation(dB):    5.7    29.7    45.1     N/A     N/A    15.9    38.4    58.4   
Signal Attenuation(dB):    5.7    29.1    43.8     N/A     N/A    18.7    38.1    58.5   
      SNR Margin(dB):    6.3    6.3    6.2     N/A     N/A    6.0    6.0    6.0   
       TX Power(dBm):    0.8   -12.1    6.6     N/A     N/A    11.7    7.8    5.3   
#

[Dray]

So it looks like your speed is limited by the attenuation.

Can you try a different cable between the master socket and the modem?

[GigabitEthernet]

speedtest.net is notoriously innacurate.

[carrtim1]

Hi ya

Thanks for all your input, I really appreciate it. I've swapped the cable between the mast socket and the modem and ran the same command. Here is the output..# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason:   0
Last initialization procedure status:   0
Max:   Upstream rate = 15486 Kbps, Downstream rate = 47488 Kbps
Bearer:   0, Upstream rate = 15497 Kbps, Downstream rate = 47491 Kbps

Discovery Phase (Initial) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2793,3959)
Medley Phase (Final) Band Plan
US: (7,32) (871,1205) (1972,2770)
DS: (33,859) (1216,1961) (2793,3959)
        VDSL Port Details        Upstream        Downstream
Attainable Net Data Rate:       15486 kbps          47488 kbps
Actual Aggregate Tx Power:          7.6 dBm           13.8 dBm
====================================================================================
   VDSL Band Status      U0      U1      U2   U3      U4      D1      D2      D3
  Line Attenuation(dB):    5.6    29.7    45.1     N/A     N/A    15.8    38.4    58.4   
Signal Attenuation(dB):    5.6    29.0    43.9     N/A     N/A    18.6    38.1    58.5   
      SNR Margin(dB):    6.4    6.3    6.4     N/A     N/A    6.3    6.3    6.1   
       TX Power(dBm):    0.4   -12.0    6.5     N/A     N/A    11.7    7.7    4.9   
#

[Dray]

Are you plugged into the master and is it an SSFP Infinity master socket?
http://bt.custhelp.com/app/answers/detail/a_id/40812/~/what-type-of-master-socket-have-i-got%3F

[carrtim1]

Yes I'm plugged into the master socket. The master socket is one with the built in filter. It's got Openreach on it top left and MK3 top right written on it.