Someone asked if VOIP, Voice Over IP, is possible using an EVDO cellular/mobile phone data network.
The answer is yes, there is a WAV file sample of a demonstration telephone conversation available on the internet using Vonage with the compression setting dialed down to 50Kbps. Note that 1xRTT does not provide sufficient bandwidth for VOIP. The same site which tested VOIP over EVDO also successfully tested iChat video conferencing over EVDO and offer a video of the demonstration:
Have fun playing with VOIP through EVDO, if you have any comments please let me know and if you have any other questions which you'd like me to answer for free please send them to Ben Dash at firstname.lastname@example.org