It's #G video call over network without data
Hi, I think you are mistaken with the Skype/Tango/G talk or whatsoever that uses data and require the other party to have these installed.
I think what the origin of this thread was asking for is a 3G video call over the network without the need to have data plan. I used to call using 3G video using my old win mobile 6 phone to my wife's Nokia Symbian phone or my Dad Sony Ericsson phone without data line but now I'm using the Galaxy Nexus, I don't have that option. If I use the Nokia phone to call 3G video, it will say number is busy.
I think we just need the dialer to support video call. Not internet video call.