Anyone around here knows about Radio Phones in France?
 

I am not from France my self, but I need to know this.
Just like here in my country we have Nextel which is a radio
phone, you know, just click it, talk, like a walkie-talkie.
Does anyone know which company has this service on France?
Does Orange provides this? ( I have no idea about what
kind of services they provide, here we don't have these )
Around here I could only have a Nextel, would it work if I wanted
to talk with someone in France?
If, for example, there is No Nextel there, only another brand of
service provider, would I be able to use my nextel to talk with
someone from there?
Thanks in advance guys.