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The originating channel for the currently displayed ANI unit may be selected by pressing
the ANI SELECT button if present. If two or more channels are simul-selected, all
incoming ANIs are reported for the lowest-numbered selected channel.
PTT ID Mode
There are two types of ANI in PTT ID mode: emergency ANIs and PTT ID
(nonemergency) ANIs. An emergency ANI is identified by a leading asterisk (*),
hexadecimal E, preceding the ANI. A PTT ID (nonemergency) ANI is any ANI whose
first digit is not an asterisk.
For an incoming ANI to be considered valid, at least three digits (excluding the leading *)
must be received within one second. If more than six digits (excluding the leading *) are
received during this one-second window, only the last six are retained.
Emergency ANIs
When a valid emergency ANI is received, it is placed into the ANI buffer. Then the
channel unmutes, the ANI is displayed, the red LED on the channel's ANI SOURCE
button begins to flash, and an operator alert sounds. The last three actions continue until
the ANI REVIEW button is pressed.
If multiple emergency ANIs are received, the most recent one is displayed and all others
are put into the ANI buffer. The operator alert continues sounding, and the appropriate
ANI SOURCE button LEDs continue flashing until all emergency ANIs in the buffer
have been reviewed.
The emergency ANI operator alert temporarily stops when a call is received on any
channel so that the call can be heard. The alert resumes when all call activity stops. This
behavior continues until all emergency ANIs have been reviewed.
Nonemergency ANIs
When a valid nonemergency ANI is received, it is placed into the ANI buffer. Then the
ANI is displayed, and the green LED on the channel's ANI SOURCE button begins to
flash. The last two actions continue for five seconds or until the ANI call stops, whichever
is longest. Pressing the ANI REVIEW button immediately removes the ANI from the
display and turns off the LED.
All incoming PTT ID ANIs are ignored if an unreviewed emergency ANI exists in the
ANI buffer.
ANI REVIEW Button
The six most recent ANIs are permanently stored in an ANI buffer in the order they are
received. When a new ANI is received, it replaces the oldest ANI in the buffer.
The contents of the ANI buffer can be reviewed at any time by pressing and holding the
ANI REVIEW button. While the button is held, the appropriate ANI SOURCE button
Operation
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