In reply to a post by jayteepics:

Neighbour asked twice what package and confirmed Infinity 1 ?

Possibly, some Infinity 1 users report speed boosts to 80Mbps.

Just testing with the speedchecker app, it's giving me wildly inaccurate speedtests so I do not trust it.

Never use WiFi for speedchecks - they can both over report and under report and should only be considered to be a rough estimate and enough to demonstrate the WiFi link and DSL connection are working at about the right speed. If you want an accurate measure always run it from a Wired connection.

Agree but I can�t dictate that to a neighbour who is just trying to help.
I�ll see if I can get her homehub tech data to compare with mine..

It's not really necessary.
We've already got to the bottom of the differences in speed.
Your line has been artificially capped/banded by DLM.
This usually happens when a line resyncs too many times in a short time period.
If your line wasn't capped you would be connecting at roughly 63Mb.

The only way to have this removed immediately is by a DLM reset performed by a visiting OpenReach engineer.
Your ISP is very unlikely to arrange this as your line is well within its estimates. Trying to explain banding to the likes of BT is like pushing treacle anyway.

It (the banding/cap) should remove itself eventually. Unfortunately reports of banding sticking for months/years are becoming more frequent.

Having written the test at https://www.thinkbroadband.com/speedtest and over the years doing numerous comparisons with other checkers, the one used by the neighbour is one of the ones that can over report by a significant margin i.e. outside the margin you can realistically expect and thus is why Ofcom is so negative about crowd sourced speed test results.

Thanks to you and others here regarding this banding. I don't know about frequent resyncs but I do know I was left in this position last April and just lived with it. However when you find out what your neighbour gets it resurrects old sores.

The OR engineer (not the first underground guy who came) last year told me 50 was all I would get (this was a migration from Infinity 1 to 2) this is where the distance got raised as the sole reason...

IIRC the DLM brought the speed down almost as we looked and it stuck at 50.But that's a long time ago and no boost has occurred.

Regarding leaving BT and going elsewhere (even if I could) probably wouldn't solve my problem just as an 80/20 service from Entanet last year failed to get past 50 anyway

Regarding "It's not really necessary.
We've already got to the bottom of the differences in speed."

True but the line length I was told was very probably wrong by some considerable margin.
This is the Technical Log from my attached neighbours line. And according to Andrew this is either verging on a world record or we are more likely 400 metres. If I were to walk across gardens to Cab 12 Somerton Road, Langport iwould probably cover 200 yrds.

Product name: BT Hub 6A
Serial number: +084316+NQ62127766
Firmware version: SG4B1000B522
Firmware updated: 15-Jan-2018
Board version: 1.0
Gui version: 1.64.0
DSL uptime: 2 Days, 11 Hours 11 Minutes 42 Seconds
Data rate: 17.34 Mbps / 78.19 Mbps
Maximum data rate: 17282 / 79839
Noise margin: 5.9 dB / 3.1 dB
Line attenuation: 20.1 dB
Signal attenuation:
VPI / VCI: 0/38
Modulation: G_993_2_ANNEX_B
Latency type: Fast Path
Data sent / received: 479 MB Uploaded / 3435 MB Downloaded
Broadband username: [email protected]
BT Wi-fi: Active
2.4 GHz wireless network name: BTHub6-TSQW
2.4 GHz wireless channel: Smart (Channel 1)
5 GHz wireless network name: BTHub6-TSQW
5 GHz wireless channel: Smart (Channel 36)
Wireless security: WPA2 (Recommended)
Wireless mode: Mode 1
Firewall: On
MAC address: 90:4D:4A:1A:64:11
Software variant: -
Boot loader: 7.33.1

Admittedly this has measured very little data but hey I can't do anything about that.
Cheers

Is your attenuation 20.4 dB?

At around 1200m from cabinet TA10 0QH range 4 to 19
At around 600m from cabinet TA10 9SE 18 to 40
At around 250m from cabinet TA10 9TS 54 to 80
At around 20m from cabinet TA10 9SQ 71 to 80

Your line is capped, with 10db noise margin, whereas the standard is 6db. So your line is either dropping out, or you are often rebooting, or you have the router close to a bunch of other electrical devices which are emitting noise e.g. Christmas lights, tvs, etc.

For super super stable lines, they get a 3db noise margin, which your neighbour has. So for whatever reason your line is less stable than average, hence the noise margin has gone from 6db to 10db and your line has been banded. Your neighbours on the other hand, their line is more stable than average, hence the noise margin has gone from 6db to 3db. So to all intents and purposes your lines are at the opposite end of the spectrum, yours is underperforming compared to average, the neighbours is overperforming compared to average, and yet you are comparing the two like-for-like.

In terms of what you can do - ensure the router is away from electrical interference. Ensure you are using the master socket. Confirm do you have extension sockets? Have you removed the bell-wire. Is anything else connected to your line e.g. sky box, landline etc? Are they filtered?

The banding is unlikely to remove itself for a few months (assuming you figure out the problem and fix it), the system only intervenes after a few months of better line conditions.

You mention the router is connected with a 1 metre cable, so you are not using the provided equipment, the BT RJ11 cable is way over 1 metre long. Have you used the provided filters etc or gone and used your own too?

Edited by ukhardy07 (Fri 19-Jan-18 13:58:54)