Currently, I'm involved in this project too.
What is EVDO? Just the Basics:
>EV-DO - Evolution Data Optimized
>Personal broadband wireless service for a wide range of customers, from business people to students
>Always on - - similar to DSL (wherever 3G capability is available)
>Rides on CDMA signal- 1x data capability available everywhere CDMA voice service available
>Up to 10 times the peak data rate of the next best public wireless solution - 800 - 1,000 Kbps (kilobits per second) average download speeds, comparable to DSL speeds
>Allows the user to be connected wherever they are are not only for email, but for downloads, large files, photos, spreadsheets, etc.
>Advantages over WiFi:
>>Always on with seamless roaming!
>>Signal can travel on same cell sites as cell phones
>>No 300-ft range from the cell tower or "hotspot"
>>Customers can access their corporate VPN (virtual private network) anywhere they can get a cellular signal via a secure, encrypted signal
>>Can download and run video clips in real time
>>Can provide service to customers outside of cable-modem or DSL areas
>Relatively low cost with high capacity - allows rich web browsing and application usage
>1xRTT: 50Kbps - 100Kbps Upload and Download (bursts to 144Kbps)
>EVDO Rev 0: 400kbps-1000kbps Download (bursts up to 2.0Mbps), 50kbps-100kbps Upload (bursts to 144Kbps)
>EVDO Rev A: 600Kbps-1,400Kbps Download (bursts to 3.1Mbps), 500Kbps-800Kbps Upload (bursts to 1.8Mbps)