What people are saying - Write a review
We haven't found any reviews in the usual places.
THE MANY FORMS OF VIDEO TELEPHONES
16 other sections not shown
Other editions - View all
activities allow American appears applications areas AT&T audio telephone bandwidth base become Bell Bell System billion cable called capital CATV channel Chapter cities common carriers communications competition Consequently considered conversation cost deaf demand device discussed display economic educational effective Electric Electronics employed energy Engineer equipment especially established example facilities frame future Health human important increased industry Institute interactions investment issue Laboratories less lines long distance major Management material operating organizations percent person physicians picture Picturephone possible potential present receiver records References regulation Report response result scan Science serve signal significant slow social standards subscribers switching Technology Assessment telecommunications Telegraph telephone companies telephone system television terminal transmission transmitted transportation two-way unit University urban users utilities video telephone wires York