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[pob]

My TalkTalk connection has started having problems with the upload speed after no problems for ages.
My sync is still 7Mb upload, but I'm only getting around 1Mb throughput.  This is making working from home (for 3 of us in the house) pretty much impossible.
Anyone any ideas what the cause could be?  Anyone else having similar issues?
Connections are via ethernet.

[re0]

I can see you had a resync yesterday afternoon, so perhaps you might say it started since then?

If that is the case, maybe something is messed up with the speed profile or configuration on TT's end. I'd wager a quick drop and reconnection of the PPP would sort it - or restarting the modem (if you do not know how to drop the session).

[pob]

Thanks for the reply.
Unfortunately the problems started before the resync. 
The resync was because I powered off the modem etc for over an hour yesterday to see if it needed a profile reset (I had that with my download speed a few years ago).

[RealAleMadrid]

One possible cause could be upload activity happening that you are not aware of while running speed tests. Iphones and other smartphones are one of the main culprits. I have also had trouble a while ago with Dropbox uploading and hogging the capacity.

[pob]

Yep, already thought of that - had that issue in the past when iCloud decides to run a backup overnight.

Unfortunately not the culprit - when running speed tests the only device connected was my main computer via ethernet - I disabled WiFi.

[tiffy]

Had a "similar" US speed issue last April with my previous ISP, Plusnet, the main difference in my case being that US synch speed was also proportionately low, see details in this rather long thread which may or may not be relevent to your issue:
https://forum.kitz.co.uk/index.php/topic,24606.msg413899.html#msg413899

I was fortunate in that I run DSLStats 24/7 via a RPi on my line and was able to tabulate, record and with the help of the many knowledgable forum patrons here attempt to diagnose the issue.
I have no personal experience with your ISP, TT but I hope you have more joy in getting them involved should that prove necessary than I did with Plusnet.

From the limited stat's you have provided, I assume you are on 80/20 provision as your DS synch is greater than 40 Mbps, with the assumed (to cabinet) line length proportional to the DS line attenuation (17.3 dB) your DS synch speed is not very good, wonder if the line performance in general is not up to spec. and perhaps a factor with your US speed issue?

What speed range does the BTw Wholesale Checker indicate for your line:
https://www.broadbandchecker.btwholesale.com/#/ADSL

Are you in a position to substitute your modem/router as process of elimination preferable with a Broadcom chipped device where DSLStats could be utilised to obtain more detailed line stat's.?
Accepting that your line is still very likely above the DS handback speed threshold (the main criteria applied) it's unlikely that your ISP or via them Openreach will accept that there is an issue to investigate, with hard evidence such as line stat's snapshots you will certainly have more chance of prompting remedial action.   

[pob]

I have a Raspberry Pi monitoring my HG612 modem.
Nothing of note in the graphs.  Connection normally very stable (connected for months at a time).
No change at all in my Sync speeds.  It is just my Upload throughput that has dropped from around 6Mb to 1Mb about 48 hours ago. 

I've never been happy with my downstream sync speed.  I've had 3 open reach engineers over recent years.  This is as fast I can get.  Lots of crosstalk in my area.  Over the years there have been a couple of occasions where the cabinet must have reset and kicked everyone off.  My HG612 resyncs quite quickly at over 50Mb in these situations.  As everyone else comes back on line my SNR drops like a stone until it resyncs back at around 42Mb.

I used to get a max attainable of 70Mb when I was on Digital Region all those years ago (but never synced more than 40+Mb as that was all they sold).

I've been on an online chat with a TalkTalk agent for over a hour now.  Keeps asking about filters, master sockets etc etc despite my Sync speed being fine.

[pob]

Full stats for anyone that is interested:

Code: [Select]

xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 7064 Kbps, Downstream rate = 41384 Kbps
Bearer: 0, Upstream rate = 7064 Kbps, Downstream rate = 42388 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode(0x0)
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 3.1 6.1
Attn(dB): 17.3 0.0
Pwr(dBm): 12.6 4.8
VDSL2 framing
Bearer 0
MSGc: -6 26
B: 227 207
M: 1 1
T: 0 38
R: 12 16
S: 0.1711 0.9348
L: 11223 1917
D: 4 1
I: 240 112
N: 240 224
Q: 4 0
V: 0 0
RxQueue: 100 0
TxQueue: 20 0
G.INP Framing: 18 0
G.INP lookback: 20 0
RRC bits: 0 24
Bearer 1
MSGc: 90 -6
B: 0 0
M: 2 0
T: 2 0
R: 16 0
S: 10.6667 0.0000
L: 24 0
D: 1 0
I: 32 0
N: 32 0
Q: 0 0
V: 0 0
RxQueue: 0 0
TxQueue: 0 0
G.INP Framing: 0 0
G.INP lookback: 0 0
RRC bits: 0 0
Counters
Bearer 0
OHF: 0 1369357
OHFErr: 51 172
RS: 1846150016 4177177
RSCorr: 517627 236
RSUnCorr: 0 0
Bearer 1
OHF: 4934972 0
OHFErr: 0 0
RS: 29609463 0
RSCorr: 3 0
RSUnCorr: 0 0

Retransmit Counters
rtx_tx: 1945434 0
rtx_c: 3519 0
rtx_uc: 4960 0

G.INP Counters
LEFTRS: 2 0
minEFTR: 42373 0
errFreeBits: 51206257 0

Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 2166496157 0
Data Cells: 377324435 0
Drop Cells: 0
Bit Errors: 0 0

Bearer 1
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 0 0
Data Cells: 0 0
Drop Cells: 0
Bit Errors: 0 0

ES: 2 162
SES: 1 0
UAS: 26 26
AS: 79269

Bearer 0
INP: 54.00 0.00
INPRein: 1.00 0.00
delay: 0 0
PER: 0.00 8.91
OR: 0.01 28.71
AgR: 42481.45 7092.58

Bearer 1
INP: 2.50 0.00
INPRein: 2.50 0.00
delay: 0 0
PER: 16.06 0.01
OR: 47.81 0.01
AgR: 47.81 0.01

Bitswap: 29135/29135 1250/1251

Total time = 22 hours 1 min 35 sec
FEC: 517627 236
CRC: 51 172
ES: 2 162
SES: 1 0
UAS: 26 26
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 15 minutes time = 1 min 35 sec
FEC: 705 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 15 minutes time = 15 min 0 sec
FEC: 5057 7
CRC: 0 5
ES: 0 5
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 22 hours 1 min 35 sec
FEC: 517627 236
CRC: 51 172
ES: 2 162
SES: 1 0
UAS: 26 26
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 0 sec
FEC: 0 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Since Link time = 22 hours 1 min 7 sec
FEC: 517627 236
CRC: 51 172
ES: 2 162
SES: 1 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0

[meritez]

Full stats for anyone that is interested:

Interested, pob can you ask the talktalk adviser to run a NGA Service Test on Supportal please, they should be able to give you the following information:

Code: [Select]

Test Summary
Name
Openreach Reference ID
DiagnosticCode
TestDescription
MainFaultLocation
Sync Status
Downstream Speed (MBPS)
Upstream Speed (MBPS)
Additional Description
Appointment Required
Fault Report Advised
Test Start
Test Stop
Multicast
Supplementary Information
Radio Frequeny Ingress
Bridge Tap
Repetitive Electrical Impluse Noise
Voice Line Test Result
NTE Power Status
CrossTalk
Voice Fault ID
Voice Reinjection
Faceplate
NTE5c
Technology
Speed Visit Complete
PLTI
CPE Vectoring State
Home Wiring Problem
DSL Profile Rate Assessment
Estimated Line Length In Metres
Upstream Rate Assessment
Downstream Rate Assessment
Interference Analysis
Service Impact
Interference Pattern
Interference duration longest occurrence
Interference location
Interference observed In days
Historic CVLAN analysis check
Downstream Policing Discard Rate
Customer Traffic Level

DLM Summary
Name
Current Session (mins)
Current Policy Applied
Policy Change in Last 14 Days


Product Summary
Name
Current Ordered Downstream Speed (MBPS)
Current Ordered Upstream Speed (MBPS)

Line Summary
Parameter
Downstream line rate (MBPS) :
Upstream line rate (MBPS) :
Uptime (Secs) :
Retrains (Successful Initializations + Failed Initializations) :
Downstream Traffic (MBPS) :
Upstream Traffic (MBPS) :
Downstream Discarded Frames :
Upstream Discarded Frames :
Downstream Policing Discards :
Upstream Policing Discards :

Profile Summary
Profile name


VDSL Error Seconds Details
Parameter
Start time stamp of bin
Errored Seconds
Severely Errored Seconds
Unavailable Seconds
Ingress Code Violation
Egress Code Violation
Retrains
That should be populated with specifics to your line, so you can ask what profile you are on, is there any interference according to the test, is their any radio ingress, is there any electrical impulse?

[pob]

I'll ask but I don't hold out much hope.
He's just insisted that I reconnect my TalkTalk router (bypassing my HG612 and Linksys Velop system).
Speedtests haven't changed (no surprise there!)

[pob]

Latest update...
Insisted I 'factory reset' the TalkTalk router.
Has come back with the line: The NGA Test on Supportal shows as passing. No fault found.

I've now been on this live chat for 2 hours and it's getting annoying :-(

Appreciate the help though guys - I'm sure it's entertaining :-)

[meritez]

Latest update...
Insisted I 'factory reset' the TalkTalk router.
Has come back with the line: The NGA Test on Supportal shows as passing. No fault found.

I've now been on this live chat for 2 hours and it's getting annoying :-(

Appreciate the help though guys - I'm sure it's entertaining :-)

That's no help, as if a line is still in sync, that's no fault found, regardless of DLM turning it into garbage.

[pob]

I know, but he appears to be following the script to the letter.
I've asked about DLM / Profile resets and he says he can't do them - has to be done by Openreach (true?)

Edit: just come back with: since there is no issue on the sync speed profile reset is not required. Have you tried doing a factory reset on the router?

[meritez]

I know, but he appears to be following the script to the letter.
I've asked about DLM / Profile resets and he says he can't do them - has to be done by Openreach (true?)

True, DLM is enabled by default and controlled by Openreach

[pob]

So, after 3 hours on live chat:

"Based on the checks we’ve run it looks like the issue is likely to be within your home.

We've completed the following checks:

Run a line test today and found no line fault is present.
Our systems have checked line data for the past 7 days and found no line faults present.
You've confirmed your Broadband/Telephone equipment is connected to your main telephone socket and the equipment is not damaged.
Ensured your router is current and up-to-date (if the issue impacts Broadband).

We can send you additional guidance on how to check the setup in your home

Or if you’d prefer we can send an engineer to investigate and make sure your setup allows you to get the most from your TalkTalk service. The cost to send an engineer is £40, but if the engineer finds a fault in TalkTalk or Openreach equipment then this will be credited back to you.

What would you like to do?

Book a TalkTalk Engineer
Get the in home check guide by email
Get the link for the to in-home check guide
Resolve the issue myself"

This is with a factory reset TalkTalk router connected to the master test socket with only 1 ethernet connection active.  Sync speeds for upload 6.5Mb.  Throughput speed test: 1Mb.

I think I need to give up for today :-(