We chose the standard we felt was most reliable and worked with more commercially available modems. Older k56flex modems might be upgradeable, but not always. There are many reasons that a phone line might not be able to sustain high speeds like 56k. There are no guarantees that your line will work. We've had great results so far with lines in the West Side and downtown Santa Cruz, but even in those areas a line at the house next door may be entirely different.
Some web pages suggest borrowing a modem from a friend and trying it out first.
If you are using an older PC or Mac, your hardware and software may not permit you to see faster speeds, even if you do get a faster modem. About This Newsletter Cruzio doesn't like to waste bandwidth with extra email, but we sometimes have events and announcements that users need to know about. This seems like the most efficient way to let people know what's happening. Hope it's helpful. Talk to a human being.