AUDIO STATUS MESSAGING FOR TRUNKED RADIO SYSTEMS
Original Publication Date: 1995-Nov-01
Included in the Prior Art Database: 2002-Apr-03
A trunked radio system, as shown in Figure I, consists of a trunking system controller (TSC), a control channel base station, a number of tralIic chan- nel base stations and a number of subscriber radio units. Trunked radio systems allow status messages to be sent between radios using signalling packets on the control channel. These status messages are defined by a number of code values which corre- spond to text messages stored in the memory of the radio. When a radio receives a status call, it uses the code value to reference the particular text message in its memory which is then displayed for the user.