firing up its EV-DO Rev. A network in America, and already we're seeing signs of life with Rev. B. In all honesty, though, we've known about the next iteration of EV-DO (and the next-next, for that matter) for years now, but said Chinese carrier has just completed what it calls the world's first EV-DO Rev. B VoIP call on its CDMA2000 system. In other words, this is the first time a CDMA carrier has achieved a 9.3Mbps download rate and 5.4Mbps upload rate. The lovely part of this is that ZTE can upgrade from Rev. A to Rev. B without any additional hardware, thus paving the way for a quick commercialization in Q3 2009. Huzzah!