The CT is a breakthrough in throughput technology. It is a tool to be used in-between any device that it can be connected to. Think of anything. From an automobile, boat, to other computers, it can send/receive information about it and ultimately give you control over that device.
What I mean by wireless cameras, can be said for anything wireless as long as the wireless receiver can be connected to the CT. Make sense?
Push to talk, yes, if you want to send audio via the CT you would have to physically push the button, but you would receive audio without having to do a thing. I'll ask product development if there are options to send audio without pushing the button. I'll get back to you on that.
The CT has its own battery and is charged by any means that provide an energy source. Continuous power can be achieved if the source of that power can continue. No, you don't have to take the CT with you if it’s hard wired to a power source.
If mobility is what you want, then it would be like having any other wireless device, such as a cell phone, laptop, or anything else that needs to be charged. Last I heard solar batteries were among the many options being considered.
Anyway, I hope some of this helps. I'll be getting in touch with the guys in product development and look forward to getting more detail about the CTs capabilities. In the mean time, I appreciate good honest debate.