Updated: my parents has been updated by DLM this morning due to DLM Policy from Standard to Speed.

Changed:
- Max Observed Downstream Speed (Mbps) 46.36
- Max Upstream Observed Speed (Mbps) 20
- Observed Date 2020-02-20
... into:
+ Max Observed Downstream Speed (Mbps) 68.02
+ Max Upstream Observed Speed (Mbps) 20
+ Observed Date 2020-02-22

Max rate: 68.7Mbps/21.4Mbps
Data rate: 68Mbps/19.9Mbps

Downstream SNR: 2.9dB
Upstream SNR: 5.9dB

Interleaved low on both G.INP Enabled

Line attenuation: 15.1dB (down) 19.5dB (up)

Download speedachieved during the test was - 64.33 Mbps
For your connection, the acceptable range of speedsis 40 Mbps-66.1 Mbps .
Additional Information:
IP Profile for your line is - 66.1 Mbps

Upload speed achieved during the test was - 18.83Mbps
Additional Information:
Upstream Rate IP profile on your line is - 20 Mbps

Edited by adslmax (Sat 22-Feb-20 13:15:07)

With a 17.9dB attenuation, I would suggest your line is maybe 450-500m from house to cabinet, although it will depend on te guage of wire.

Mine, and I know the exact route, is 450m with 16.4dB attenuation. And at 80+ with 5.9dB margin does suggest fairly low/below average noise levels.

It's the same here. No virgin media anywhere so everyone is on FTTC and crosstalk is an issue.

In reply to a post by MHC:

With a 17.9dB attenuation, I would suggest your line is maybe 450-500m from house to cabinet, although it will depend on te guage of wire.

Mine, and I know the exact route, is 450m with 16.4dB attenuation. And at 80+ with 5.9dB margin does suggest fairly low/below average noise levels.

Well, I do not know how my line is syncing at 80+ Mbps if my cabinet is 450-500m to my property and that too on a 6dB profile. I live in a residential building, with those measurements it would drop to 60 Mbps speed test.

Those measurements on google maps show up as 290-320 meters. I also walked from my home to the cabinet location which is only 4 minutes walk. Unless of-course it is taking a different route back to my building. A direct route to the entrance of my building via Wentworth Street shows 250 meters, unless it is circuiting from the back of my building and traveling a little bit further. But even then it should not add more than 50 meters of additional copper, never mind 200 meters extra.

But anyway, let's just assume my line is 450 meters to cabinet as you believe it is based on 17.9dB attenuation, I shouldn't be getting 80Mbps while wolvesmad at 300 meters only gets 68Mbps! Something must be wrong here. Because my area and block also does not have Virgin Media!

The cabinet 20 is only serving my building and a few other small blocks near 46 Frostic Walk. The other buildings near me are served by different cabinet numbers.

At one time, with this line I had a max achievable of nearly 90Mbps. So it is possible to get an 80Mbps sync, IF the noise and cross talk level is low. Mine is currently around 70Mbps, however if one particular neighbour disconnects their modem, mine willl jump up to around 78Mbps. Even without that, my line will finally retrain down to 3dB and a Max achievable around 80 or just over.

So much is related to noise and cross talk and every line and every location will be different.

In reply to a post by MHC:

With a 17.9dB attenuation, I would suggest your line is maybe 450-500m from house to cabinet, although it will depend on te guage of wire.

Mine, and I know the exact route, is 450m with 16.4dB attenuation. And at 80+ with 5.9dB margin does suggest fairly low/below average noise levels.

My attenuation was 14db off the HG612 and my line is about 330 to 360 meters or so.

From my front door to the cab via pavement it's 330m to the cab. Plenty of cul-de-sacs though so no idea if it goes directly there. As these houses were finished last, I have a feeling it could be over 400m. I did ask the BT Engineer how long the D side was when my line was 'flooded' and he said his box of tricks couldn't tell him.

At my old property, I was the first connection on the cab and connected at 79999/20000 on 17db attenuation. As the cab became busier and then became a 384 line cab, I ended up down to 58000/20000. G.INP and 3db SNR took me back up to 70-72000/20000.

With a powercut, my HG612 would beat the other routers to sync and would reconnect at full sync with 3db snr and then eventually drop it.

I was hoping for vectoring on this cab as it was a funded cab. No such luck.

Edited by wolvesmad (Sat 22-Feb-20 18:33:17)

Where do you get the detailed DLM stats from adslmax?

HG612 Modem Stats

In reply to a post by adslmax:

HG612 Modem Stats

The truth, but not the whole truth .

Your post referred to seems to me to be a combination of HG612 stats, BT Wholesale estimator output, and BT Wholesale speed test Further Diagnostics.

Edited by RobertoS (Sat 22-Feb-20 22:30:50)