Line noise ?

Bit of a novice in this area, so any comments appreciated as to the quality of the following

Line Attenuation: down 9db up 4db

Noise Margin: down 29.3db up 25db


I am on max adsl, but at the moment I am waiting for BT to remove me from a fixed 2mb line

If those figures are correct, then you have a very short line with bags of noise margin - you'd get the full 8Mbps, and probably near enough full speed if you are able to get an ADSL2+ provider such as Be, UK Online or Sky Broadband.

I have just run a check early this AM, 5AM to be exact.

I thought I would, because I had lost my connection when I came to my PC.

It now shows:

Line Attenuation Down:9db Up:4db

Noise: Down:14.2db Up:21db

Maybe not so good, although I am connected again and speed test is good at over 6000kbps

With those figures at 5AM you could expect the full 8128 sync rate all the time which would equate to a maximum data download rate or profile of 7150. I assume that now you have had the 2Mb speed removed you will have to go through the 10 day training again to set your fault rates and such but I would expect your data rate to climb to 7200 over the next few days, all things being equal. When you have a chance check your profile on the BT test site and I would be disappointed if after the 10 days you didn't sync at 8128 get the full 7150 profile.

BTW, the drop you have seen in your SNR margin downstream between your 2Mb speed and your present 6xxx speed is normal as SNR is inversely proportional to speed, i.e. the higher the speed the lower the SNR margin. However, you have still plenty, +8.2db, in reserve, as the usual minimum target SNR margin necessary for stable MAX operation is 6db. In fact, if you had an ISP such as BE available, who supply ADSL2+ you could get quite a bit more speed out of that line, at least double your best MAX speed if not a bit more again.

Thanks for that info mate

Your welcome, we aim to please and enjoy your great connection

I want a great connect, not this 2meg line I have...

my router is syncing at 3.4 megs, what speed should i be getting?

2.5Mbps but if you can improve your SNR margin, i.e. your connection, even slightly, to push your sync above 3424 for three days you would get 3Mbps. However, how long you stay there depends on your line and you just might find it jumping between 2.5 and 3. However, it does depend on your line and how low your SNR margin gets at the worst time of day, i.e. evening and night after dark.

If you are syncing now at 3.4 but only getting 2Mbps or so that might suggest that you have a had a number of syncs below 2848 in the last three days knocking your speed down to 2Mbps. The problem is that during that three days of attempted recovery, any other low syncs knocks you back to the start of the three day count again.

You can see on the page below the profile you can expect if you can keep a particular sync speed for at least three days.

http://www.aaisp.net.uk/maxatm.html

I try always to sync between 8 and 9am, I get the highest syncs then, and it virtually never loses sync. (I have to switch off after 2 days+ as my router freezes otherwise ). Sync later in the day and it can go below 5120 which is the BRAS threshold for 4500.