GAI-Tronics 10959-908 Rack-Mount Audio Messenger Interfaces - Manual (Page 6)

Pub. 42004-487A
M ODEL 10959-906 & 10959-908 R ACK -M OUNT A UDIO M ESSENGER I NTERFACES P AGE
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Configurations
The AMI Configuration Tool (ACT) software is used to define and change configurations for the AMI
and is included with the unit. To retrieve configurations and play audio messages, the AMI accesses a
CompactFlash
® memory card that is pre-programmed with the 10959-906 or 10959-908 product
configuration.
Alarms
The ACT tool includes pre-recorded tones suitable for almost any application. The tones include typical
emergency tones (i.e., a siren, slow whoop, etc.) and signaling or process tones (i.e., a gong, steady tone,
etc.). All of the tones and speech messages broadcast by the AMI are stored in MP3 file format.
For applications where a required tone is not supplied, any tone recorded or stored in an MP3 file format
can be used with the AMI. Additionally, custom speech messages can be recorded and configured for use
with the AMI. Using commercially available audio editing software, custom fragments can be recorded
onto the PC and store in MP3file format.
For example, to play a speech message and alarm tone simultaneously, the speech can be recorded on the
right channel and the tone on the left channel. The broadcasted result will be a speech-over-tone
message.
Timed Events
The AMI has the capability to perform several functions based on the time of day. With the ACT
software, events can be scheduled to occur at any interval (hourly, daily, weekly, monthly, etc.).
Live Voice Messages
The AMI can broadcast live voice speech messages via the connected Model ACC2500 Audio Control
Center Desk Set. The ACC2500 can be configured to have any level of priority. For example, the
ACC2500’s live speech messages can be configured to perform emergency voice broadcasts by assigning
it the highest priority level of “0” (zero).
Telephone Operation
The telephone interface portion of the AMI provides the ability to broadcast a live speech message from a
telephone. To perform this function, the AMI must be connected to an analog station port of a PBX type
telephone system or directly to the Central Office telephone line on the public switch telephone network
(PSTN).
Accessing the AMI via a telephone requires a Remote Access Security Code to be entered during initial
programming (default programming does not include a password). This code is used to prevent unwanted
callers from directly accessing the system.
Acoustical feedback, or “howling”, can be a problem when broadcasting from a telephone. This occurs
when a telephone microphone is too close to a speaker that is broadcasting the audio created by the
microphone. To prevent feedback, the AMI includes an integral feedback eliminator circuit. If the AMI
is configured to use the feedback eliminator, incoming telephone broadcasts are recorded and stored in the
AMI until the telephone connection is terminated (caller hangs up). After termination of the call, the
AMI will play the saved broadcast. The delay between the actual speech and the recording playback
eliminates any possibility of feedback.