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Standard User marko845
(newbie) Wed 10-Feb-21 17:44:16
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Re: Broadband Availability Checker


[re: MHC] [link to this post]
 
Stats after reboot

5. DSL uptime: 0 days, 00:00:26
6. Data rate: 6047 / 19135
7. Maximum data rate: 6047 / 34521
8. Noise margin: 6.0 / 13.7
9. Line attenuation: 28.0 / 26.0
10. Signal attenuation: 28.0 / 23.6

5. DSL uptime: 0 days, 00:04:00
6. Data rate: 6047 / 19135
7. Maximum data rate: 6047 / 34438
8. Noise margin: 5.9 / 13.7
9. Line attenuation: 28.0 / 26.0
10. Signal attenuation: 27.9 / 23.6
Standard User MHC
(sensei) Wed 10-Feb-21 17:50:06
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Re: Broadband Availability Checker


[re: marko845] [link to this post]
 
So, no change and 13.7dB is a rather odd number. If DLM was causing it then 9, 12, 15 +/- a small amount would be the margin.

j0hn83 has made a comment above - let him have the info he has asked for and he may be able to point to an issue.


I will say, just avoid any reset/reboot/powercycle unless absolutely necessary.


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

M H C


taurus excreta cerebrum vincit
Standard User marko845
(newbie) Wed 10-Feb-21 17:59:08
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Re: Broadband Availability Checker


[re: j0hn83] [link to this post]
 
Hi,

I am connected to 'Exchange NEWICK is served by Cabinet 7'

I am using the plusnet hub one as supplied.


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Standard User marko845
(newbie) Wed 10-Feb-21 18:05:30
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Re: Broadband Availability Checker


[re: ian72] [link to this post]
 
Hi Ian,

After reboot the stats are

5. DSL uptime: 0 days, 00:04:00
6. Data rate: 6047 / 19135
7. Maximum data rate: 6047 / 34438
8. Noise margin: 5.9 / 13.7
9. Line attenuation: 28.0 / 26.0
10. Signal attenuation: 27.9 / 23.6


The event log is full of the following type of messages

IN: BLOCK [16] Remote administration (ICMP type 8 code
IN: BLOCK [15] Default policy (TCP
BLOCKED 4 more packets (because of Default policy)
OUT: BLOCK [15] Default policy (First packet in connection is not a SYN packet:

These are occurring every few seconds
Standard User j0hn83
(knowledge is power) Fri 12-Feb-21 12:30:10
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Re: Broadband Availability Checker


[re: marko845] [link to this post]
 
It is a BDUK funded cabinet.
My suspicion would be this is a Vectoring issue.

I've no idea if the Plusnet Hub One has any known Vectoring issues or not. You would need to try another modem to test this.
A Huawei HG612 would be ideal for this as they appear to work great with Vectoring.

I've noticed similar high max attainable and low sync on a few modems when Vectoring is enabled.
With some of the Zyxel modems that have the Vectoring issue changing the dsl driver in use to the version that passed OpenReach MCT (modem conformance testing) saw the issue go away and the modem sync at the high attainable rate.

Do you have another modem you could try? Even if it's just to get sync quickly to test if the Plusnet Hub is the issue.
Standard User marko845
(newbie) Fri 12-Feb-21 14:17:52
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Re: Broadband Availability Checker


[re: j0hn83] [link to this post]
 
Thanks for the reply.

The only other options I have for routers are BT Home Hub 4, which is just the same as the plusnet hub one which is branded.

I have a Vodafone router - HUAWEI Model HHG2500 - its never been used but its reviews are not very positive for FTTC broadband! I also have no idea how to setup a router that is not the approved version.

I notice a Huawei HG612 is fairly cheap to pick up off Ebay, so may try to source one of these - are they easy to set up?

Thanks
Standard User marko845
(newbie) Wed 24-Feb-21 09:25:28
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Re: Broadband Availability Checker


[re: marko845] [link to this post]
 
Thanks for everyone who offered advice.

It turns out my line had a banded profile, which capped speeds to 20mbps maximum.

This has now been removed and I am now getting speeds over 30mbps download!!

6. Data rate: 6050 / 34131
7. Maximum data rate: 6051 / 34273
8. Noise margin: 5.9 / 6.0
Standard User BLaZiNgSPEED
(member) Wed 24-Feb-21 10:06:11
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Re: Broadband Availability Checker


[re: marko845] [link to this post]
 
The speed estimates sometimes are not always accurate and sometimes even underestimate what you'll get!
For example last year when I joined TalkTalk FTTC. Those were my speed estimates.

Featured Products Downstream Line Rate(Mbps) Upstream Line Rate (Mbps) Downstream Handback
Threshold(Mbps) WBC FTTC Availability Date WBC SOGEA Availability Date
High Low High Low
VDSL Range A (Clean) 80 68.2 20 19 62.1 Available Available
VDSL Range B (Impacted) 80 64.8 20 19 56.6 Available Available

The checker was showing 68.2-80Mbps and for Impacted 64.8-80Mbps.

This year, I don't know whether crosstalk reduced the speed estimates. But this is what it shows now. High Low High Low
VDSL Range A (Clean) 80 60 20 15 52.9 Available Available
VDSL Range B (Impacted) 79 54.1 20 12.9 44 Available Available

As you can see, it's pretty big drop 60-80 vs before 68.2-80 and for Impacted 54.1-80Mbps when it was 64.8-80Mbps.

This doesn't seem quite right. Yet, I have synced at 80Mbps download and 20Mbps upload the entire year that I have been with TalkTalk so far!

This year router stats, just now..

Router stats Downstream Upstream
Actual Rate [Kbps] 79999 19999
Maximum Rate [Kbps] 80904 19999
Noise Margin [dB] 2.80 14.80
Attenuation [dB] 18.00 0.00

Last year it was

Downstream Upstream
Actual Rate [Kbps] 80000 19999
Maximum Rate [Kbps] 80534 19999
Noise Margin [dB] 6.40 15.40
Attenuation [dB] 17.90 0.00

Receiving a slightly higher Maximum rate this year in router stats but lower speed estimates in BT Wholesale checker.

Only difference I can see is this drop in noise margins. 2.80 vs 6.40. Maybe that's the reason for the reduced speed estimates. But so far connection is still maintaining stability with the reduced noise margins.

TalkTalk Speed estimates last year vs this year

Your typical download speed:
48.1Mb - 72.1Mb
Your typical upload speed:
13.2Mb - 18.9Mb
We guarantee you a minimum download speed of 39.8Mb

Your typical download speed:
66.2Mb - 73.6Mb
Your typical upload speed:
17Mb - 18Mb
We guarantee you a minimum download speed of 59.6Mb

Very, very bizarre! It is completely off. But I don't really care as long as I'm still getting 80/20 Mbps that's all that matters! smile
Standard User Realalemadrid
(committed) Wed 24-Feb-21 11:16:00
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Re: Broadband Availability Checker


[re: BLaZiNgSPEED] [link to this post]
 
You are reading too much into all the estimates because they are just that, not actual speeds. They give a range of speeds to cover differences in line quality, interference due to crosstalk etc. The BT checker knows nothing about your SNRM and the max rate figures are just calculated by the modem and don't mean a lot.

ISPs like to cover their backs so tend to state a reduced speed range well below the BT checker estimates.

The truth is that the modem doesn't look at any checkers and will sync at the best speed it can.smile
Standard User BLaZiNgSPEED
(member) Thu 25-Feb-21 05:19:54
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Re: Broadband Availability Checker


[re: Realalemadrid] [link to this post]
 
In reply to a post by Realalemadrid:
You are reading too much into all the estimates because they are just that, not actual speeds. They give a range of speeds to cover differences in line quality, interference due to crosstalk etc. The BT checker knows nothing about your SNRM and the max rate figures are just calculated by the modem and don't mean a lot.

ISPs like to cover their backs so tend to state a reduced speed range well below the BT checker estimates.

The truth is that the modem doesn't look at any checkers and will sync at the best speed it can.smile
Yes, you are right because I also once had briefly for a short couple of months low estimates like 79Mbps max at the BT Wholesale checker. But I was still syncing at 80Mbps and in TalkTalk account it shows UPDATED Speed to your Router Est. speed: 53 Mb - 74 Mb Measured speed: 80 Mb

Other property that we own in Shoreditch, London has lower TalkTalk estimates while cabinet is within 50 meters from the property, only a few seconds walk from the building. And BT Wholesale checker would show minimum 78.7-80Mbps and 19-20Mbps.

Yet this is their TalkTalk checker.
Your typical download speed:
55.5Mb - 61.6Mb
Your typical upload speed:
17Mb - 18Mb
We guarantee you a minimum download speed of 49.9Mb

My checker shows this
Your typical download speed:
66.2Mb - 73.6Mb
Your typical upload speed:
17Mb - 18Mb
We guarantee you a minimum download speed of 59.6Mb

Yet I live within 320 meters from my cabinet vs 50 meters for the other property while they are getting lower predicted speeds!

It really is ridiculous and misguiding especially for someone who is curious to move to another home and wants to know what speeds they'll get.
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