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[jonnyt44]

Hey Folks

Just moved in to a new build property. BT were willing to provide me with a 17a Infinity service, unlike everyone else who said up to 38Mbps max only (and some neighbours have been told "fibre not available").

Anyway, I'm about 700m from the cab. I was expecting around 45-50Mbps however I seem to be syncing at the full 80Mbps :O!

Code: [Select]

> adsl status
adsl status
  ---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
   Running Mode            :      17A       State                : SHOWTIME
   DS Actual Rate          : 79995000 bps   US Actual Rate       : 19999000 bps
   DS Attainable Rate      : 81794208 bps   US Attainable Rate   : 26933000 bps
   DS Path Mode            :        Fast    US Path Mode         :        Fast
   DS Interleave Depth     :        1       US Interleave Depth  :        1
   NE Current Attenuation  :       16 dB    Cur SNR Margin       :        6  dB
   DS actual PSD           :     7. 5 dB    US actual PSD        :    13. 4  dB
   NE CRC Count            :       12       FE CRC Count         :        1
   NE ES Count             :       10       FE  ES Count         :        1
   Xdsl Reset Times        :        0       Xdsl Link  Times     :        1
   ITU Version[0]          : b5004946       ITU Version[1]       : 544e0000
   VDSL Firmware Version   : 05-07-04-03-00-07   [with Vectoring support]
   Power Management Mode   : DSL_G997_PMS_L0
   Test Mode               : DISABLE
  -------------------------------- ATU-C Info ---------------------------------
   Far Current Attenuation :       20 dB    Far SNR Margin       :       15  dB
   CO ITU Version[0]       : b5004244       CO ITU Version[1]    : 434da459
   DSLAM CHIPSET VENDOR    : < BDCM >

It would be appreciated if someone could "review" my stats and tell me if they are good/bad, and if I'm on the limit of anything bad happening.

I'm pretty sure BT ran a brand new cable to our site and we're the first to move in, so no interferance from others...yet

Note: Before I upgraded the firmware on my Draytek Vigor 130, my max attainable rate was around 87Mbps and the NE Current Attenuation was 12dB. This dropped to 82Mbps and 16dB respectively (as shown above) after reboot/update.

Thanks

[RealAleMadrid]

Your sync speeds are very close to the maximum 80/20 so I would say you are much closer to the cabinet than you think, probably a maximum of 400 meters. Enjoy your speed.

[Dray]

Hey Folks

Just moved in to a new build property. BT were willing to provide me with a 17a Infinity service, unlike everyone else who said up to 38Mbps max only (and some neighbours have been told "fibre not available").

All Openreach FTTC services are using a 17a profile - 40/2, 40/10 and 80/20. The only difference is the maximum sync speed cap.

[underzone]

Your sync speeds are very close to the maximum 80/20 so I would say you are much closer to the cabinet than you think, probably a maximum of 400 meters. Enjoy your speed.

Yeah, I am 425m from the cab and my attenuation is 17dB

[jonnyt44]

Your sync speeds are very close to the maximum 80/20 so I would say you are much closer to the cabinet than you think, probably a maximum of 400 meters. Enjoy your speed.

Yeah, I am 425m from the cab and my attenuation is 17dB

Cool, that's comparing to my "NE Current Attenuation 16dB"? What is "Far Current Attenuation 20dB". I don't really understand my stats sorry.

[burakkucat]

Do you see that you have two separate sections of statistics?

The first, headed ATU-R, relates to your modem (the Vigor 130) and the second, ATC-C, relates to the DSLAM/MSAN located in the cabinet.

The various abbreviations are: DS -- down stream, US -- up stream, NE -- near end, FE -- far end, BDCM -- Broadcom.

Never having used a Draytek Vigor 130, I think it best for me to allow someone else to "translate" both sections of the statistics.

[GigabitEthernet]

When you say you're 700m from the cabinet, is that walking distance or line length?

[jonnyt44]

It's actually the line length. As this was a new build property, I was fortunate enough to observe the Openreach work. I can literally trace the cable back to the cab. It's about 650m. I'm amazed I'm getting this speed!

It is, for most of it's length, a very straight line.

Higher grade cable maybe?

[GigabitEthernet]

I suspect a combination of new copper, very low background noise and a low takeup in your area of FTTC, all contribute to your excellent connection speed.

There was another user on here who was in a situation very similar to yours: they had a full sync at around 750m from the cabinet, so it does happen.

I can't help but feel jealous as I'm 800m away and only getting 50Mb

[Chrysalis]

you much closer than 700m as indicated by your attenuation

enjoy the speed

[NewtronStar]

I'm jealous for both of your lines and i am 1000 meters away from fttc cab and only getting 35mbps, what a difference 200-300 meters makes to ones fttc stats 

[GigabitEthernet]

you much closer than 700m as indicated by your attenuation

enjoy the speed

Attenuation isn't just down to speed distance though

[Chrysalis]

attenuation is nothing to do with speed in regards to the measurement.

[GigabitEthernet]

attenuation is nothing to do with speed in regards to the measurement.

I meant distance

[Chrysalis]

yeah copper quality plays a part as well.  But that is a extremely low attenuation for 700m, must be out of this world copper