Specifications

Basic System Configuration on the Bench
98 025-9581M
Audio Support with Optional VoIP Intercom
This section covers the setup of the VoIP intercom system to carry voice audio between
the dispatch center and the Station Transponder Units that have VoIP intercom boards
installed.
The current implementation of the VoIP option in the Fire Station Alerting system
provides a single channel of voice audio between the console system being used in the
dispatch center and one or more Station Transponder Units equipped with the optional
VoIP Intercom card.
The tasks involved in bringing the VoIP part of the FSA system on line are:
• Interfacing the dispatch console system to the VoIP Gateway Server and the FSA
Server
• Configuring the IP connections of the VoIP Intercom cards
Audio and PTT Connections from Console to Servers
In order to enable the operator from any dispatch center console position to send/receive
audio to/from the Station Transponder Units, the FSA system is not interfaced to
individual console positions. Instead, it is interfaced to a channel card slot of the general
radio dispatch console system. The audio traffic is handled as though it was a radio
channel from the point of view of the console. However, in this case the voice audio and
PTT signal are connected to the VoIP and FSA servers instead of a radio base station. The
PTT signal presented to the FSA server interface must be a dry contact closure.
The interface handles PTT as well as both receive and transmit audio. This was done to
enable the operators to use PTT inputs other than the button on the FSA Console screen.
Note In stations equipped with both Model 6203 and Model 6204 station
transponders, only the Model 6203 unit has a VoIP card installed.
Audio and
Digital Input
Interface
Tx/Rx Audio
and PTT
signal from
Console
System
950-0690
PC Sound
Card
USB Port
VoIP
Gateway
Server
FSA
Server
FSA
IP Network
Connections
to IP Station
Units
FSA and VoIP servers may be on
the same or different PCs
USB Port
Audio
PTT
PA Ready