using phone reducing snr?

sparkler · Jul 16, 2012, 06:17:33

hi im listening to the dial tone and my snr drops from 13.9 to 12.7 then when i hang up it rises again this is with a brand new filter 29th jun from bt http://www.shop.bt.com/products/billion-uk-adsl-micro-filter-7RKR.html?q=filter&src=16 is this normal??

Steve · Jul 16, 2012, 06:33:38

I would say it's not normal but also it's not necessarily the filter at fault. Ideally I would recommend the use of adslnation filters or faceplates as they do seem to have a record of high performance - http://www.adslnation.com/products/xf-1e.php. I would see if the same happens via the test socket and also with a different filter. In the ideal world the snr should remain stable,unaffected by phone usage.

sparkler · Jul 16, 2012, 07:13:09

same thing with test socket 14.6 to 13.0 and with my dlink filter 14.2 to 12.7

sparkler · Jul 16, 2012, 07:26:13

also my old bt phone makes it go from 14.2 to 12.1

Steve · Jul 16, 2012, 07:29:59

Quote from: sparkler on Jul 16, 2012, 07:26:13
also my old bt phone makes it go from 14.2 to 12.1

Is that a different phone from your first post? If so my guess is that the issue lies with your line externally. But also I think that with only a relatively small drop it may well be difficult to get an engineer to look at the line.

sparkler · Jul 16, 2012, 07:50:51

yes its a previously rented bt phone first ones a Panasonic phone and im wondering if this snr reduction is somehow related to my repeated disconnects and noise on my line that sounds like there a storm outside

Glenn · Jul 16, 2012, 08:07:19

If there is audible noise on the line, report it to your line provider.

sparkler · Jul 21, 2012, 06:35:32

question does anyone know what would causes noise on a phone line and disconnects on weekdays especially thurs-frid but not weekends??

lozcart · Jul 21, 2012, 14:12:05

Are you near or does your line pass any industrial estates or heavy industry which only operate during the week businesses like this might be causing noise on you line?

sparkler · Jul 24, 2012, 05:02:52

im not sure were the line goes but in the direction of the exchange there;s only a train line there used to be a industrial estate but that got bulldozed and turned into a supermarket

Lance · Jul 24, 2012, 16:52:50

It could be the trains - another member on here used to have that issue. Not sure why it would be more on a Thursday or Friday but I expect there is a reduced timetable for a Sat and Sun.

sparkler · Jul 27, 2012, 01:57:06

its the trains its 1:55am last train arrived at 10pm and its friday so noise is back as usual