I want a phone without voice. I hate when people call me and I never call anyone. I wouldn't want to be friends with anyone forcing me to call them to interact.
Yeah, I've also thought a phone without voice would be great; an iPod touch with data sort of thing.
Having said that, voice calls are simply more productive for quite a few things.
Making "must not interact via telephony" a condition of friendship seems a bit much. Is meeting in person also out of the question?
Sorry, I exaggerated for effect. However, I do have a phobia of phone calls and very seldom pick up the phone so if that would be the only way to communicate with someone I'm sure the friendship would die by itself.