A method and apparatus are disclosed for conducting broadcast, multipoint, and conference communications in a TDMA network at various data rates while simultaneously conducting point-to-point communications at other data rates, either between local ports or between geographically remote ports during...http://www.google.fr/patents/US4507781?utm_source=gb-gplus-shareBrevet US4507781 - Time domain multiple access broadcasting, multipoint, and conferencing communication apparatus and method
Time domain multiple access broadcasting, multipoint, and conferencing ...
