A ground-to-air telephone calling system is provided including a computer for receiving an airborne telephone number and a call-back number from a calling party and forming the telephone numbers into a data signal comporting with existing protocol filed in the FCC, an uplink unit for uplinking the data...http://www.google.de/patents/US5408515?utm_source=gb-gplus-sharePatent US5408515 - Ground-to-air telephone calling system and related method for directing a call to a particular passenger
