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Newbie
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Message 1 of 4

Downstream connection speed dropping

Hi,

I have a connection speed issue, where my downstream connection rate is dropping, meaning that my IP profile never gets the chance to come back upto speed. My usual speeds are between 2.4 - 2.8 meg, on a downstream connection of roughly 3.7.
Over the last 10 days, my downstream connecton drops to 1.152 over a 24 hour period. I've left this for a few days to see if it recovers but it never does. If I reboot the modem, it comes staright back to 3.7 meg. I am plugged directly into the test socket, have tried numerous filters and have disconnected my phone, to prove nothing internally is affecting it.

10:58:02, 19 Dec. ( 2786.450000) DSL noise margin: 21.00 dB upstream, 6.00 dB downstream
10:58:02, 19 Dec. ( 2786.380000) DSL line rate: 448 Kbps upstream, 3776 Kbps downstream

12:52:12, 19 Dec. ( 9636.050000) DSL noise margin: 20.00 dB upstream, 5.10 dB downstream
12:52:12, 19 Dec. ( 9635.980000) DSL line rate: 448 Kbps upstream, 1984 Kbps downstream

03:54:36, 20 Dec. (63780.200000) DSL noise margin: 20.00 dB upstream, 1.80 dB downstream
03:54:36, 20 Dec. (63780.130000) DSL line rate: 448 Kbps upstream, 1152 Kbps downstream

Any ideas before I go through the process of trying to convince the BT helpdesk that I have an actual issue?
I have Sam Knows stats to show my usual working connection.

Thanks

Ste

 

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Highlighted
Distinguished Sage
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Message 2 of 4

Re: Downstream connection speed dropping

Hi Welcome to the community forums

Have you tried the quiet line test dial 17070 option 2 you should hear no noise if you can hear noise then it needs reporting to BT faults on 151 with no mention of broadband
in the call are you connected to the test socket using a new filter


if using a hub 4 locate these lines located in the hub logs
Lines should look like this
19:11:29, 07 Nov. (2290101.460000) DSL noise margin: 7.00 dB upstream, 6.10 dB downstream
19:11:29, 07 Nov. (2290101.390000) DSL line rate: 448 Kbps upstream, 288 Kbps downstream

if u The stats for the Home Hub 6 can be found on the Information page from http://192.168.1.254 then Advanced Settings -> Technical Log. 


Can you run this checker and post back a screen shot of the results. Make sure you delete your phone number before posting.

http://www.dslchecker.bt.com/adsl/adslchecker.welcome

Can you use this speed tester then carry out the further diagnostics and post back a screen shot of all the results including your IP profile for up and down.

This test must be done with a wired connection.

http://speedtest.btwholesale.com/

once you have posted the information asked for then the community members can help you more

Thank You
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Highlighted
Newbie
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Message 3 of 4

Re: Downstream connection speed dropping

Hi John,

 

thanks for the reply. I did have a stable connection from the 23rd to the 27th but early this morning my connection dropped again:

02:23:10, 27 Dec. (663088.700000) DSL noise margin: 19.00 dB upstream, 7.50 dB downstream
02:23:10, 27 Dec. (663088.620000) DSL line rate: 448 Kbps upstream, 224 Kbps downstream.

After re-booting the HUB, I am now back to 2.5 meg, but that's over a meg lower than I get when my connection is clean:

Now:

09:18:55, 27 Dec. ( 66.240000) DSL noise margin: 20.00 dB upstream, 9.00 dB downstream
09:18:55, 27 Dec. ( 65.980000) DSL line rate: 448 Kbps upstream, 2592 Kbps downstream

Normally:

10:58:02, 19 Dec. ( 2786.450000) DSL noise margin: 21.00 dB upstream, 6.00 dB downstream
10:58:02, 19 Dec. ( 2786.380000) DSL line rate: 448 Kbps upstream, 3776 Kbps downstream.

 

BT Broadband availability checker.png

BT Wholesale test isn't working fully today:

bt wholesale test 27th dec 08_55a.png

BT Wholesale test from the 20th, showing the normal downstream but with a poor ip profile:

bt perf test 20th dec.png

 

There is a bit of noise on the quiet line test. 

 

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Highlighted
Aspiring Expert
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Message 4 of 4

Re: Downstream connection speed dropping

Have you tried running the quiet line test connected to the test socket? If there is still noise on line when connected to test socket then you need to call 151 and report line noise with no mention of broadband in the call. Its best being connected to the test socket as this removes possilbilites of the problem being beyond the test socket and then being charged for an engineer call out.

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