Is there a re-set button to get it back to factory settings? Depress it and hold it in for 10 seconds. Another option is to unplug it and then plug it back in after 10 seconds.
Wow, I asked my ISP how to resolve this issue (qwest) and they literally gave me a bunch of random answers about bad interference, broken phone filters, faulty phone jacks, etc. They even stated my modem should be working fine. Holding in the button for 10 secs did the trick, it reset, I restored teh factory settings, and now it works normally. No clue why they didn't mention that. Thanks for answering.