While I can't assist much with your direct question (training/retraining)... I will say we've had remarkably good success with ZyXEL brand DSL (DSLAMS and CPE Routers) compared to Zhone brand. Actiontec seems to be pretty decent but a different router altogether might make a difference for you. I remember at one point I had a customer using a Netgear or 3Com brand DSL for their Qwest DSL service. This was a number of years ago and possibly could have been before the change to DMT. Another couple of thoughts are line length to the DSLAM affects your SNR, if your at the upper limit on length there may not be much that can be done about the signal attenuation due to distance where even a little noise can make a big difference. Then lastly there are often times things you can do yourself about noise depending on the source of the noise (or some of the noise). There are various DSL test tools, possibly some you could find used for an acceptable price that can help identify noise sources so you can try and take protective action against those sources. If you go down that road, a few test equipment brands to check out (in no particular order): JDSU, Fluke, Noyes, and Exfo. I think there are some places you can rent test equipment from too though I've never actually looked into it, only heard of it. On Mon, 2011-11-28 at 14:29 -0600, gregrwm wrote: > any such thing as a fast retrain dsl modem, that would work with local centurylink lines? my searches coughed up patents but not modems. > > the TCFMeetinghouse apparently has a line that's fine for voice but the actiontec q1000 (presuming that's what they have) spends alot of time doing retrains, leaving folk to pull their hair and gnash their teeth. if you've ever tried to get qwest to fix a noisy line you know it's easier to pull those teeth. so i wonder about the modem technology. clearly they work well with nice quiet lines, but i'd say the garden variety modems are not at all robust with a bit of noise. seems like better designs should be possible. > > (i have the same to say about the robustness of the linux IP stack, but that's a different topic.) > tia, > -g > _______________________________________________ > TCLUG Mailing List - Minneapolis/St. Paul, Minnesota > tclug-list at mn-linux.org > http://mailman.mn-linux.org/mailman/listinfo/tclug-list -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.mn-linux.org/pipermail/tclug-list/attachments/20111128/b4cc3f00/attachment.html>