21cn - How do I know if I am running at the right speed?

[#1]

Ok please can someone give me the steps and checks that I need to make now that I have been on 21cn for almost 12 days?
I am happy to post the results up for you guys to look at.

[#2]

Log on to your router and look up the downstream attenuation.  Put the figure into the calculator here http://www.kitz.co.uk/adsl/max_speed_calc.php and see if your speeds match-up.

[#3]

I have attached some shots from Kitz, the BT speed tester, Plus Nets figures and also my router stats for the last week or so.

[#4]

I would check with other speed testers, I only use BT's to find out the IP profile and other sites to check if my speed is correct as BT's isn't worth a ....
If all give the same 9mbit speed would say theres a bugged speed profile, as BT's and PN's match

[#5]

Hey BRABUS, its difficult to tell what speed you should get, for instance my attenuation is 29 which according to kitz gives me 21cn of 16000 and a ip profile of 14112. I sometimes fluke a 11000 profile but no where near what I should be getting. At the moment I have a 10500 sync with a speed of 9.2.
Another user has a 29 attenuation and a sync of 17000, I guess it just depends on how bad your line is from the cabinet to your house.

[#6]

The Kitz calculator gives an accurate estimate of the speed you should get on a good line.  If you don't have a good line you may or may not be able to do something about it.
You seem to have arrived at a downstream noise margin of only 3dB, resulting in quite a lot of errors; I wonder if that is a problem?  You should also run more speed tests to see if the actual measured speed is consistently low.

[#7]

Ok so I have left it a few more days and this seems to be the new speed on my line