A digital cordless telephone (CT-2) system, having a multiple number of subscriber cordless handsets (HS's) and a subscriber manager which performs authentication for the HS's, comprises a plurality of base stations (BS's), each of the BS's being coupled with one or more HS's by radio channels for controlling...http://www.google.de/patents/US5987017?utm_source=gb-gplus-sharePatent US5987017 - Digital cordless telephone system
