Patent ID: 9704375
Date: 2017-07-11
CPC Classifications: G08B,H04L

Claim:
1. An apparatus comprising: a security system that protects a secured geographic area; a first audio annunciator of the security system, wherein the first audio annunciator is assigned a first address; a second audio annunciator of the security system, wherein the second audio annunciator is assigned a second address; a pair of conductors that connects the first and second audio annunciators to a control panel of the security system, wherein the pair of conductors supplies power to the first and second audio annunciators; and a respective transceiver of each of the first and second audio annunciators that exchanges messages with the control panel under a carrier sense multiple access (CSMA) format through the pair of conductors, wherein the first and second audio annunciators receive streaming audio messages from the control panel through the pair of conductors, and wherein the control panel transmits, through the pair of conductors, a first of the streaming audio messages to the first audio annunciator by associating the first of the streaming audio messages with the first address and a second of the streaming audio messages to the second audio annunciator by associating the second of the streaming audio messages with the second address.