Dual Emergency Phones; Figure 27 Dual Emergency Phones - Mircom TX3 Series Installation And Operation Manual

5.3

Dual Emergency Phones

Figure 27 shows a dual entry application. The phone line is shared by both
Emergency Phones.
The Emergency Phone senses whether the line in use. If one of the Emergency
Phones is in use and the user tries to make a call, the other Emergency Phone
indicates that the line is in use.
The RS-485 network connection is optional and is only required if the user
decides to connect a PC Configurator on one of the panels to configure and/or
monitor both systems.
Figure 27. Dual Emergency Phones
TX3 Emergency Phone Installation and Operation Manual
Version 2
LT-6113 Copyright 2017
Telephone outlet
Central office line
Line1
Line1
Emergency
Phone
unit 1
RS-485 bus
(optional)
TX3 System
Emergency
Phone
unit 2
49