A MULTI-CHANNEL PUBLIC ANNOUNCEMENT AND VOICE ALARM SYSTEM ARCHITECTURE TO SUPPORT ADDRESSABLE DEVICES

摘要

An apparatus including a security system (10) that protects a secured geographic area, an audio annunciator (16; ...; 18) of the security system, a pair of conductors (34, 36) that connects the annunciator to a control panel (18) of the security system wherein the pair of conductors supply power to the annunciator and a transceiver of the annunciator that exchanges messages with the control panel under a time division multiple access (TDMA) format through the pair of conductors and wherein the annunciator receives streaming audio messages from the control panel through the pair of conductors.