videophone compatiable?

i use a videophone so i was wondering if anyone knows if it is possible to find the ip address of the videochat in the iChat so i could talk to my family while im at college using the iChat to their videophone?

please let me know..thanks!

http://www.sorensonvrs.com/index.php

for those of you who don't know what a videophone is, this website has some info and pictures..