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NybbleUK
Aspiring Contributor
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Message 1 of 3

High SNR after BT line work

Last week we had problems with our broadband connection. The connection kept dropping out constantly. There was also a hissing noise on the line.

I contacted BT an they ran some tests on the line and identified that there was a problem somewhere in one of the cabinets. They said that a Technician would take a look within 24 hours and our connection should stabilise after that.

The connection has stabilised, no more drop outs or speed fluctuations, and the line noise has gone; however, we have been left with a very high SNR (14.3) on the downstream link so our connection is not as fast as it normally is.

Here is the last connection entry from the router logs:

02:21:46, 08 Dec.

DSL Link Up: Down Rate=3072Kbps, Up Rate=1011Kbps; SNR Margin Down=14.3dB, Up=6.2dB

 

Here are the details from the Help Desk page of the router:

1.

Product Name:

HomeHub5

2.

Serial number:

+076286+1528013924

3.

Firmware version:

v0.07.07.03230-BT (Type B) Last updated 12/5/2018

4.

Board version:

01

5.

ADSL uptime:

3 days, 05:27:52

6.

Bandwidth:

1011 / 3072

7.

Data sent/received:

580.5 MB / 22.3 GB

8.

Broadband username:

bthomehub@btbroadband.com

9.

BT Wi-fi:

Yes

10.

2.4GHz wireless network/SSID:

BTHub5-QZKP

11.

2.4GHz wireless connections:

Enabled (802.11 b/g/n (up to 144 Mb/s))

12.

2.4GHz wireless security:

WPA2 Only (Recommended)

13.

2.4GHz wireless channel:

Automatic (Smart Wireless)

14.

5GHz wireless network/SSID:

BTHub5-QZKP

15.

5GHz wireless connections:

Enabled (802.11 a/n/ac (up to 1300 Mb/s))

16.

5GHz wireless security:

WPA2 Only (Recommended)

17.

5GHz wireless channel:

Automatic (Smart Wireless)

18.

Firewall:

Default

19.

MAC Address:

5c:dc:96:90:7a:62

20.

VPI/VCI:

0/38

21.

Modulation:

G.992.3(ADSL2)

22.

Latency type:

Fast

23.

Software variant:

-

24.

Boot loader:

0.5.1-BT (Wed Nov 12 11:52:05 2014)

 

Is it possible to get this reset so we can get our connection speed back up to normal?

Many thanks

Guy

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Distinguished Sage
Distinguished Sage
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Message 2 of 3

Re: High SNR after BT line work

Leave it alone, and it will recover.

For more information see Why has my speed dropped

If you read the section near the bottom, by RogerB, he goes into more detail.

Distinguished Sage
Distinguished Sage
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Message 3 of 3

Re: High SNR after BT line work

all disconnections have resulted in banded profile  this will recover normally in stages as DLM reduces noise margin and speed increases until back to 'normal'



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