Slower sync speed Hub 1 vs Hub 2

[#1]

Hi Team,

Please can someone advise if they can see why my sync speed has been gradually dropping and is now about 8mb lower than it was maybe 1 year ago?

When I was running the Hub One, it would sync around 68-70Mbps with a download test speed around 63-65Mbps but now using the Hub Two it’s only sync’d at 60Mbps and has a download of around 55-57Mbps.

The BT wholesale checker for my phone number details an impacted line should be at 66Mbps. It shows my line on 26 Jan was 61.44Mbps and just now it’s at 60.70Mbps, just above the 60Mbps handback threshold.

I know it’s not much but with people working from home + kids wanting to stream, I’m sure the extra bit would be of benefit.

The line and connection itself are stable and I’m connected directly into the master socket with no phone or other lines connected to it, it’s just obvious there is a lower sync connection with the H2 vs H1.

I did have a BT HH6 in for a few months before getting the Hub 2 (due to 5GHZ issues) and did notice a slight sync drop vs the H1 but was hoping it might have improved with the new H2. I wonder if the line slowed during this time and has not recovered, I left the H2 running for about 3 weeks to see if it would increase but it has not. I hooked the H1 up today and it sync’d at 62.4Mbps so a slight increase but not like it was in early 2021.

Please can it be looked into, and if possible, the line adjusted so it’s back up to the faster sync level, I appreciate the H1 & H2 are different devices using different chipsets but would like it looked at please.

Thanks in advance.

[#2]

First thing would be to post your router stats. If you don't know how to do this post here and I'm sure advice will be forthcoming.

[#3]

[#4]

Thanks a lot for getting in touch @Wipeout

It looks like a member of our team is in the account now. Have you called in?

Anyway, I've checked out the line this morning and speeds appear to be syncing at around 61Mbps for a while to be honest, as far back as I can see. There have been a couple of fluctuations lately but nothing major, and speeds have since revolvered. 

Connections at your local cabinet and distribution pole are forever changing depending on what your neighbors are doing also, so overtime, speeds can drop slightly due to that, and general wear and tear. We have advised you to expect sync speeds of 60Mbps - 72Mbps, so if sync speeds dip below that, please let us know and we'll get a fault raised with our suppliers. 

KBD

GEA Test Detail
Circuit ID	NA	Service ID

Test Outcome	Pass
Test Outcome Code	GTC_FTTC_SERVICE_0000
Description	GEA service test completed and no fault found .
Main Fault Location	OK
Sync Status	In Sync
Downstream Speed	61.4 Mbps
Upstream Speed	20.0 Mbps
Appointment Required	N
Fault Report Advised	N
NTE Power Status	PowerOn
Voice Line Test Result	Pass
Radio Frequency Ingress	Not Detected
Repetitive Electrical Impulse Noise	Not Detected
Cross Talk	Not Detected
Estimated Line Length In Metres	248.3
Upstream Rate Assessment	Very Good
Downstream Rate Assessment	Low
Interference Pattern	Regular Interference Observed Daily
Service Impact	No Impact Observed
Interference Duration Longest Occurrence	From12:00to22:00
Interference Location	Customer Premise
Interference Observed In Days	0
Home Wiring Problem	Not Detected
Downstream Policing Discard Rate	0.0
Customer Traffic Level	Upstream and Downstream traffic detected
Technology	VDSL
DP Type	External
Profile Name	0.128M-80M Downstream, Interleaving Low - 0.128M-20M Upstream, Error Protection Off
Time Stamp	2022-02-19T10:15:00

Parameters	MIN	MAX	AVG
Down Stream Line Rate	60.7 Mbps	62.4 Mbps	61.2 Mbps
Up Stream Line Rate	20.0 Mbps	20.0 Mbps	20.0 Mbps
Up Time	497.0 Sec	900.0 Sec	899.3 Sec
Retrains	0.0	1.0	0.0

[#5]

As more people take up FTTC locally, the level of cross talk between circuits increases with a consequential reduction in sync speed.  It is all to do with the complexities of physics!

[#6]

Thanks @adam945 

I had made comment to it on my renewal ticket so yes maybe someone was looking at it, I did say it would post on here for comment also.

Yes, can’t complain about the stability, that’s been fine, it’s just been gradually slowing down, there is a faint noise on the quiet line test but I don’t think it’s any different to 1 year ago.

Now I’m thinking… my neighbour had their pole to house line replace sometime last year, the pole is at the bottom of our drive and the Outreach van was sat across it while they swapped it out.

As the sync speed is sitting right on the lower limit, I guess there is not much that can be done until it goes below the threshold, it details “no impact observed” but is below the clean line threshold and the rate assessment comes up as low so maybe it’s getting worse gradually. The H1 was always up around the 68Mbps sync, only really noticed this in the last 6-12 months as it gradually went lower. Cheers again. 

[#7]

@adam945  I found a screen grab with the faster H1 sync speed from May last year.

[#8]

I am really sorry for the inconvenience this is causing.

[#9]

Thanks, Just hoping to catch it early if it is on a downward slope, seems to be holding just above the Impacted line threshold but below the clean line threshold. Hopefully it'll climb back up to the faster sync speeds seen last year.

[#10]

Held for 29 days at 61.4mbps, reset by itself and dropped 1meg to 60.4mbps. I was hoping it may go up not down.

[#11]

The detailed stats from the advanced / technical log page would be more helpful please...

DSL uptime:42 Days 2 Hrs 19 Mins

Data rate:7.061 Mbps / 65.182 Mbps

Maximum data rate:6.986 Mbps / 64.775 Mbps

Noise margin:5.3 / 2.7

Line attenuation:9.0 / 19.7

Signal attenuation:9.0 / 25.2

You can copy & paste the text, so there is no need to grab the screen and the edit the image.

[#12]

Product code:Plusnet Hub Two

Firmware version:v0.05.03.07154-PN

Firmware updated:Unknown

Board version:R01

GUI version:1.3 10_03_2021

DSL uptime:2 Days 16 Hrs 33 Mins

Data rate:20 Mbps / 60.442 Mbps

Maximum data rate:22.415 Mbps / 72.749 Mbps

Noise margin:6.4 / 6.5

Line attenuation:4.5 / 10.7

Signal attenuation:4.4 / 11.4

VLAN id:101

Upstream error control:Off

Downstream error control:Off

[#13]

Those stats are little different form those you posted earlier. Just 0.3mbps slower than before at a slightly lower SNRM.

That could point to a small amount of interference on the line. I cannot recall, have you done a quiet line test? This should be done frequently.

[#14]

Nothing different noticed on the QL test.

It did jump up last week to sync just under 66Mbps but has now dropped back to 60Mbps. @adam945 can you see any reason for that jump up to 66 then back down 60? Cheers 

Screen snips from the logs.

[#15]

Hiya @Wipeout, thank for getting in touch. I can certainly see the sync increased and then went back down to 60mb though looking at the data I'm unable to see why this happened.