A method of transferring a user message-conveying radiotelephone call by a subscriber unit from a first radio coverage area, served by a first fixed control unit which is coupled to a wireline telephone switch, to a second radio coverage area served by a second fixed control unit, includes transmitting...http://www.google.fr/patents/US5590172?utm_source=gb-gplus-shareBrevet US5590172 - Method and system for transferring a radiotelephone call from one coverage area to another
Method and system for transferring a radiotelephone call from one coverage ...
