A cordless phone includes a base station coupled to a local line and a personal station communicating with the base station by radio. The base station includes a first channel unit for operatively coupling the personal station to the line so that communication between the personal station and an external...http://www.google.de/patents/US5327483?utm_source=gb-gplus-sharePatent US5327483 - Cordless phone and cordless phone system using such cordless phone
Cordless phone and cordless phone system using such cordless phone
