HipVoice allows you to PTT across pretty much any PPC/WinCE/WM5/SmartPhone/Tablet & XP device on any platform (WiFi, GPRS or CDMA) to any platform in a secure private environment. We are not streaming voice and that is why we are able to go over any carrier network - however, we are encapsulating the entire message and then delivering it all under 1kb a second.
We have an implementation for our Moto Q9 connected to Telefonica (Mexico) and PTT'ing with us in Los Angeles on Cingular on an HP iPaq and getting 3 seconds sub times.
Watch the video by going to
http://www.youtube.com/watch?v=gHk3tHFKoGU (keep in mind the PTT on the video is SLOW for video purposes. In actuality PTT speeds are any where between 3 to 7 seconds depending on network & topology).
We will be conducting a private beta test and If anyone would like to beta test HipVoice software, feel free to e-mail me at
info@hipvoice.com and in the subject line type BETA and we will send you the cab file, login instructions etc in about a week... We will not share or distribute your e-mail to ANYONE...