METHOD AND AN EQUIPMENT FOR TRANSMISSION OF TELEPHONE CALLS TO A PORTABLE, WIRELESS TELEPHONE SET

摘要

A method and an equipment for wireless transmission of telephone calls between a stationary unit connected to a telephone unit at a short distance from the stationary unit provides that all pairs of units have access to a plurality of common duplex radio speech channels for transmission of calls, and to a common radio signalling channel for transmission of signals referring to connection and disconnection of the speech channels. The radio speech channels are assigned after adaptive channel scanning in that they are listened to before a call, and a channel selected which is idle with respect to calls. The selection of an idle channel takes place automatically with the use of radio receivers, channel selectors and circuits incorporated in both units.