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1. Service through a remote terminal
2. The AT&T DSL Pro package, providing down sync of 1536-3008 and up of 384-512
Anyone upgrading from Pro to AT&T's elite package should set their RWIN values back to default.
Profile using Windows XP or 2000 having a speed issue who is past the 10-day ramp-up and achieves sync rates of 3008/512 but only sees 1.9-2.2 Mbps speed down at »help.sbcglobal.net/dsl/speedtest . If you do not see a sync rate of 3008/512, it's a seperate issue. Your line must also be served by a remote terminal for this to be of use.
Download DrTCP here. Get the top most file. Use it to change your RWIN setting to either 14520 to 17424. Try one first, then the other. 15972 is another good setting to try if you don't see results from the those two
Then change Top Receive Window to 14520, 15972 or 17424 and hit the apply button. Restart your PC.
Test your results with »help.sbcglobal.net/dsl/speedtest
If all is well, you should see between 2.3 to 2.5 Mbps.
You can also test with Optimum Online. Click on »ftp://ftp1.optonline.net/pub/test64 and allow it to download at least 15% of the file. You should receive between 280-312 KB/second, depending on internet traffic. At times of heavy traffic, this number can be far lower, but if it's consistently low over the course of several days, post about it in the AT&T Midwest Funhouse forum here.
This will be required for each computer you have running Windows 2000 or Windows XP. Older versions of Windows, Macintosh computers running OS X, or other machines running Linux do not have this problem.