Two-way radio communications system having selectable operating modes

Abstract From the Canadian patent

A radio communication system includes a base station (Fig. 1) and a plurality of remote units (Fig. 2) that can be operated in one of several modes. In the Message Storage mode, a caller is given the option to store a voice or numeric message for later transmission to the called remote unit. If a caller enters an Override code, however the system attempts to, establish voice communication between the caller and the called remote unit. In the Call Screening mode the caller's, message is stored in the base station and simultaneously, forwarded to the called remote unit. During reception of the message, the called remote unit can "pickup" the call and begin normal voice communications with the …