NFN Gateway Embedded Installation
Optional NFN Gateway Voice Paging
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NFN Gateway Installation & Operation Manual - P/N: 52306:Rev: D 06/01/07
2.8 Optional NFN Gateway Voice Paging
2.8.1 About Voice Paging
An ONYXWorks
®
Workstation with the Voice Paging option enabled sends encrypted streaming
audio over an IP network to nodes on the associated NFN network through the NFN Gateway. A
Voice Paging enabled Workstation sends voice messages to an enabled NFN Gateway, which
transmits the audio through a sound card that is connected to the UL-approved public address
amplifier (NOTIFY-PAA). The amplifier adjusts the sound card’s output to the voltage that is
required by the audio coupling transformer (ACT-2). The audio coupling transformer sends the
low-level signal into a supervised input on a quad intelligent audio transponder (XPIQ).
A logic zone equation configured at the receiving FACP links the general zones that are configured
at the Workstation to the appropriate control devices.
• The public address amplifier and the Workstation must have a common AC power source.
• The public address amplifier can drive up to 250 audio coupling transformers. The strength
and quality of the audio signal is diminished with increased wire length.
• Do not run cable adjacent to, or in the same conduit as 120 volts AC service, “noisy”
electrical circuits that are powering mechanical bells or horns, audio circuits above 25 volts
RMS, motor control circuits, or SCR power circuits.
• Voice Paging takes the lowest priority at the quad intelligent audio transponder. Refer to the
quad intelligent audio transponder manual for more information about priority
configuration.
Refer to the ONYXWorks
®
Workstation manual for Voice Paging software features.
2.8.2 Microphone and Public Address Amplifier Connections
Emergency and re-location messages should not be used on the Voice Over IP function. This
function is to be used only for general paging.
The NFN Gateway PC board is equipped with on-board sound component that is activated through
its JP5 header. If the Voice Paging option is ordered the NFN Gateway assembly comes with a
sound cable that plugs into the JP5 header. The cable has connectors for CD audio, MIC-IN, LINE-
IN and LINE-OUT. The sound cable provides the connection to the public address amplifier.
Sound Cable Installation
Install the sound cable by connecting it to the JP5 header on the gateway PC board as shown in the
following figure. The sound cable connector that plugs into the JP5 header has a tab on one side.
That tab should face the inside of the PC board when installed properly.
Figure 2.10 Gateway Sound Cable Installation
JP5
Tab on connector faces
the inside of the PC board
MIC-IN
LINE IN
LINE OUT
CD Audio