If a mobile terminal A requests a call connection to a fixed terminal B which can accommodate a plurality of channels, connection is established between the fixed terminal B and mobile terminal A via one channel. If another slave terminal C requests a call connection to the fixed terminal B, a channel...http://www.google.fr/patents/US6771633?utm_source=gb-gplus-shareBrevet US6771633 - Multi-point communications system and method thereof
Multi-point communications system and method thereof