Quote:
I thought it constantly checked the line? It averages it over a certain time period and then decides on your speed.


With the xDSL folks here in Canada, there are two things that contribute to this.

First, is the assigned line profile, which is set by the loop provider (telco), and which gives an absolute upper limit on performance. Getting this changed is a difficult exercise in patience, and may have a fee associated with additional change requests. Apparently, end-users in Australia can use a web-based interface to adjust their own line profiles -- way to go!

Next, are the session-to-session negotiated tones between the two modems. These can vary over time according to current line conditions.


Edited by mlord (22/05/2007 12:42)