Greetings laurie, as far as the Ptt technology with T-Mobile, our taget audience is the "Data" people, at least at this time. The CDMA technology (Sprint, Verizon, and NexTel) now all use the push-to-talk system for there phones, to fully explain why we currently do not offer this, and they do, not fully sure.

Again we are concentrating more on the Wireless Data. But down the road we may all offer @ some point the PTT - but keep in mind that ultimetly when 3G is lauched you may find i.e like PC vs Mac, there will be 2 technologies CDMA and GSM, so each will have its highlights, like Voice Tech vs Data Tech.

Thankyou