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my speed is getting slower and slower


my speed is getting slower and slower

I am on 8mb and over time my speed is droppping and getting slower i have sent tickets and have done everything i can including new filters another modem and all the tests you can think off.

These are my speed tests.

29-04-2007 11:46:24 1426.5 

29-04-2007 11:46:03 1435.1
29-04-2007 11:10:38 1434
29-04-2007 11:10:19 1402.9
29-04-2007 11:09:58 1424.9
23-04-2007 12:12:55 1389.5
23-04-2007 12:12:26 1322.3
23-04-2007 01:45:20 1397.4
23-04-2007 01:44:15 1397.5
23-04-2007 01:43:02 1388.6
20-04-2007 17:50:48 1398.3
15-01-2007 21:46:56 1811.9
15-01-2007 21:21:42 759.2
15-01-2007 21:20:58 855.3

This is stats

BusyBox v1.00 (2006.09.20-01:51+0000) Built-in shell (ash)

Enter 'help' for a list of built-in commands.

# adslctl info --stats
adslctl: ADSL driver and PHY status
Status: Showtime Channel: INTR, Upstream rate = 448 Kbps, Downstream rate = 185
6 Kbps
Link Power State: L0
Mode: G.DMT
Channel: Interleave
Trellis: OFF
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 6.3 21.0
Attn(dB): 40.5 22.0
Pwr(dBm): 18.5 11.9
Max(Kbps): 2016 1072
Rate (Kbps): 1856 448
G.dmt framing
K: 59(0) 15
R: 16 16
S: 4 8
D: 4 2
ADSL2 framing
MSGc: 1 1
B: 59 15
M: 4 8
T: 1 1
R: 16 16
S: 4.2666 9.0000
L: 480 128
D: 4 2
SF: 32228 32226
SFErr: 0 0
RS: 547884 273921
RSCorr: 1 0
RSUnCorr: 0 0

HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 2400404 0
Data Cells: 178756 0
Drop Cells: 0
Bit Errors: 0 0

ES: 0 0
SES: 0 0
UAS: 17 0
Total time = 4 min 33 sec
SF = 32228
CRC = 0
LOS = 0
LOF = 0
ES = 0
Latest 1 day time = 4 min 33 sec
SF = 32228
CRC = 0
LOS = 0
LOF = 0
ES = 0
Latest 15 minutes time = 4 min 33 sec
SF = 32228
CRC = 0
LOS = 0
LOF = 0
ES = 0
Previous 15 minutes time = 0 sec
SF = 0
CRC = 0
LOS = 0
LOF = 0
ES = 0
Previous 1 day time = 0 sec
SF = 0
CRC = 0
LOS = 0
LOF = 0
ES = 0

Im not certain what to do now i have turned modem router which is a wag54gs Linksys of every day for 20 mins for 5-days, no change. This has been done loads of times. Anybody got any ideas as BT and Plusnet say everything is ok. But my neigbers are conecting around 6-7mb and mine is under 2mb...

If i go under conection settings in memeber area it will say this now:

Your High-speed Broadband Service

Your current broadband speed is 1500 Kbps

It used to say over 7mb....... Cry
Plusnet Staff
Plusnet Staff
Posts: 12,169
Thanks: 18
Fixes: 1
Registered: 04-04-2007

my speed is getting slower and slower


The speed decrease seems to have started around 25/3/07 on that day we have the following speed reports from BT

25/03/2007 06:21:09 6816kbps
25/03/2007 14:14:59 2848kbps
25/03/2007 15:18:33 1728kbps

since then it's stayed at 1728kbps.

Does that date ring a bell at all for anything that may have changed? New phone, Sky box, central heating or something else? Something that afternoon caused the line to resync at a lower rate and also to keep it at a lower rate.

If there's nothing obvious that comes to mind I'd suggest having a read through this:

to see if anything helps and if not raise a fault via our fault checker under connection settings on the left. The speed your line is now sync'd at is below the fault threshold rate for your line, so as long as you've checked everything your side we should be able to raise this for BT to look into.

my speed is getting slower and slower

I checked to see if anything had changed on those days but nothing was installed or altered in anyway, i was actually off sick that week so did not do alot at all..

I have all ready done a fault checker a few days ago. see below.

Your original Question 1:46am, Monday 23rd April 2007
Broadband Fault Checker - Initial checks [ Completed ]

All initial checks have been completed without finding any problems. You now need to visit the Broadband Faults Checker and complete a number of detailed checks to progress your fault further. Please make sure you do this within the next 48 hours, otherwise your Question will close and your fault won't be checked anymore.

Your comment 2:02am, Monday 23rd April 2007
Broadband Fault Checker - Detailed checks [ Completed ]

All questions have been completed by the user.

Your comment 2:03am, Monday 23rd April 2007
The customer has provided the following contact details for the duration of the fault.

Daytime telephone number: *****

Evening telephone number: *****

Email address:

Additional contact info: After 5pm work days and anytime weekends. im on holiday tommorow monday april 23rd so you can ring or email me..

Your comment 2:03am, Monday 23rd April 2007
Broadband Fault Checker - Connection checks [ In progress ]

The tests on your broadband connection have now started. Please check this Question in about two hours to see the results of the tests.

Script User Unused - ADC - Developers 2:03am, Monday 23rd April 2007 Heavy FRIACO dialup (0808 9933270) component added to account

Script User Unused - ADC - Developers 2:18am, Monday 23rd April 2007
Broadband Fault Checker - Connection checks [ Completed ]

Dear Ian Webb,

The results of our tests show no fault with your broadband connection. Completed speed tests show that your connection speed is: none found

According to BT, this speed is within the limits of acceptable performance for broadband service.

Kind Regards,

Customer Support

Script User Unused - ADC - Developers 2:19am, Monday 23rd April 2007
This ticket has been returned to the customer for their attention

Your comment 12:11pm, Monday 23rd April 2007
Then how come i am paying for 8mb conection and its allways under 2mb. I know the speed will never be 8mb but under it, and it used to be around 7mb to 6mb, then it keeps dropping down all the time, it went to around 5mb then 4mb now its allways under 2mb. So it looks like after all this time there was no point going for a faster speed...... if everyone says it is ok i will have to look else ware, i have to go to london tommorow as i am an engineer who works on your systems and others so i will be checking things out myself, i just could not be bothered doing it myself and thought i would go through the proper channels.
thanks for your help anyway.

ian webb

Your comment 12:18pm, Monday 23rd April 2007

Another speed test

link:CSA Removed CSC Analyst 4:41am, Tuesday 24th April 2007
Dear Mr Webb,
Our records show that your current expected Data Transfer Rate is [ 1500 ]

About 'Up to 8Mb' DSL Max
Customers who have recently been moved to 'Up to 8Mb' broadband are likely to experience interruption to their service 'sync' and varying connection speeds. Whilst a small number of genuine problems exist, most issues reported to us are in fact no cause for concern and are instead due to the way the product is designed.

It is common for customers to experience periods of instability within the first 10 days service on their broadband.
More information about what to expect with 'Up to 8Mb' DSL Max can be found at:

During the life of your product
From time-to-time BT will change your download speed to what they think your line is capable of supporting. This can happen due to fluctuations in noise and reductions or improvements in line quality because of this.

At certain times your equipment may report a much higher sync rates, this is not necessarily a problem. It can take BT a number of days to upgrade your download speed after a period of deterioration. If this happens we suggest you reboot your equipment once a day for a period of 5 days. This will allow your connection to retrain.

Please note: if BT has not yet set your download speed, your Data Transfer Rate value will be set to 2000 by default.

BT are aware of a current problem whereby some customers are not having their download speed set, even after the first 14 days of 'Up to 8Mb' service. If this has happened to you please let us know so we can tell BT on your behalf.

‘Up to 8Mb’ customers should be aware broadband DSL Max is a rate-adaptive technology, and that data throughput (BRAS Data Rate) will vary dynamically according to technical issues affecting your line speed. Our Customer Support Team cannot change this value where the data rate is not a ‘fault’.

If you think you have a broadband fault
Please use the Broadband Fault Checker tool at the Help Assistant. This will allow you to run some basic tests and raise a fault if required.

You should be aware that your Maximum Stable Rate (MSR) is a figure determined during the initial 10 day period after 'Up to 8Mb' is provided. This is used as a benchmark for future fault investigation. The value is NOT a guarantee of consistent speeds. Please read 'Get Ready for High-speed Broadband’ for more details:

The speed at which your modem or router connects to your broadband connection is known as your SYNC Rate. This is independent of the BRAS data transfer rate (throughput).

link:CSA Removed

To administer your account and for all your help and support requirements visit

Your comment 11:07am, Sunday 29th April 2007
I have switched off modem every day for the last 5 days for atleast 20min each time, but nothing changing in speed. My neighbers are on 8mb conectons and are all around 6-7mb on their conections but i am not. I am giving up now and as bt and yourselfs have said there is no problem still, i am looking at what isp's my neighbers are using.

[Moderator's note by Jonathan (chillypenguin): Customer service angents names removed in line with the forum rules.]

my speed is getting slower and slower

I have rechecked my linksys wag54gs modem and instead of reporting the low speed it has gone back to this below.

Status: Up
Downstream Rate: 7616 Kbps
Upstream Rate: 448 Kbps

I dont know why it has changed but atleast something has... Smiley

But speed test and the downstream rate plusnet comes up with is still 1500 kbps.. :?:
Posts: 343
Registered: 05-04-2007

my speed is getting slower and slower

You will need to synch at the higher rate for 3 days without a lower connection before bt will raise the profile.
Plusnet Staff
Plusnet Staff
Posts: 12,169
Thanks: 18
Fixes: 1
Registered: 04-04-2007

my speed is getting slower and slower

According to the connection logs the router reconnected at 16:30, did you do anything at the time that may have caused the resync?

So long as it stays sync'd at this speed then as fletchdsl says the throughput rate will automatically increase in about 3-5 days (that's the way that BT have set Max to work).

my speed is getting slower and slower

all i did was switch off modem and switched back on and then rechecked speed, but i have done that so many times and it has not made any diferrence,i even swapped filters and used another modem before with no change, the only thing i can think of is a wiring problem somewhere but i am checking ever little cable and conector, but this i have done before aswell. But if it keeps working then that is fine with with me, as long as it resysncs in about 3-5 days.... thanks for all your help hopefully this be it now..... :lol:

my speed is getting slower and slower

Here is mine from BT speed tester

2.2 Mbps differences from dsl connection rates frm throughput. I am having the same problem with PN speed tester showing less than 2MB Sad :twisted: :idea:

Date Speed Achieved (kbps)
29-04-2007 22:22:39 1650.4
29-04-2007 22:01:04 1415.7
29-04-2007 21:57:53 1659.1
29-04-2007 21:57:11 1918.9

Test1 comprises of Best Effort Test: -provides background information.
IP profile for your line is - 6500 kbps
DSL connection rate: 448 kbps(UP-STREAM) 7616 kbps(DOWN-STREAM)
Actual IP throughput achieved during the test was - 5483 kbps
Plusnet Staff
Plusnet Staff
Posts: 12,169
Thanks: 18
Fixes: 1
Registered: 04-04-2007

my speed is getting slower and slower

Don't worry about the results from the portal speedtest, it's due for replacement shortly because it wasn't designed with speeds faster than 2Mbps.

The BT Speedtest looks a lot better, it's normal for a difference between the sync rate and thoughput rate. First of there's the ATM overhead in the that means your throughput will always be lower than the sync rate and then there's also TCP/IP overheads to consider as well.

What speed do you get on these tests: