A multiple access radio telephone system is connected to a telecommunication switching system and serves a group of N remote stations through M two-way radio channels (where M is smaller than N). The remote stations have corresponding subscriber line terminals in the switching system and are accessible...http://www.google.fr/patents/US4712229?utm_source=gb-gplus-shareBrevet US4712229 - Multiple access radio telephone system selectively operating on full-duplex and half-duplex modes
Multiple access radio telephone system selectively operating on full-duplex ...