EXTENSION IDENTIFICATION FOR A RADIO CONNECTED TO A PABX TELEPHONE NETWORK
Original Publication Date: 1993-Oct-01
Included in the Prior Art Database: 2002-Feb-19
Many businesses now make use of public trunked radio systems for their mobile communication needs. They purchase a number of radios and pay a monthly subscription to a system operator. In this way, many user groups share the same infrastructure reducing the costs for small businesses who cannot afford to buy their own private system.