Will Voicent work with a wireless isp such as Clear.com?

Yes. As long as consistent bandwidth of over 128kb/sec upload and download speeds can be reached per channel. An unofficial trick to getting the best bandwidth with Clear is to point the Clear modem toward a cellular tower at a less than 45 degree angle, not straight up as directed. If you are unaware of the closest cell tower, use Speakeasy to test your bandwidth then rotate the modem 180 degrees and re-test the bandwidth. Do this a few more times while cutting down the angle and you should get a sense of the best direction to point the modem.