AT&T now recommends using
http://www.megapath.com/speedtestplus/ to test your DSL signal. Choose Atlanta for your test site and click on the Home Service button.
The site provides an explanation of what the results mean. If you are signed up for the maximum speed DSL service for our communities, you should have readings of:
- Download speed: about 6 Mb/s
- Upload speed: above 4 Mb/s
- Jitter: ideally 0, but perhaps up to 2
- Ping: around 40 ms.
I have called Technical Support and complained about the erratic performance: sometimes the results will go down to 1 Mb/s and comparable deterioration in the other measures. To date they've been unable to isolate the cause. When they do diagnostics, they will ask you to plug your computer directly into the modem to run the test without the router in the network. So you will have to call when you can do that test, or do it before you call to verify that the problem is not with your router.
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