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15 TRUNKED OR CONVENTIONAL MODE OPERATION

15.1 SIREN/LIGHT OPERATION

Each siren/light key is designed to control an optional siren/light package. Pressing a siren/light key will
light the key indicator. Each siren/light key (except RESET) can be programmed for either CANCEL or
ADDITIVE operation. If programmed for CANCEL, then all other siren/light activity is cancelled except
for the activity associated with this key. If programmed for ADDITIVE, then a key press will add its
respective siren/light activity to the current siren/light activity. It is important to note that while the lights
are additive, only a single siren can be active at a time. The current siren will be determined from the
recently pressed key that contains a siren assignment.
Each siren/light key (except RESET) can be programmed for Toggle, Momentary, or Timed. In Toggle,
each key press will toggle the state of the key between ON and OFF. In Momentary, a key's respective
feature will only be active while the key is pressed and held. When programmed for Timed, the siren/light
key activity will only be active during the programmable time-out window. The duration of the time-out
window is programmable between from .5-127.5 seconds. During the time-out window the respective key
indicator will be ON. When the timer expires, the activity will be terminated and the indicator will turn
OFF. If an additional time-out key (programmed for ADDITIVE) is pressed during the time-out window,
then the time-out window is reset and both activities will terminate at the same time.

15.2 DIGITAL VOICE OPERATION

(ProVoice/Aegis/Voice Guard)

15.2.1 Voice Modes

Each system (trunked or conventional) in the radio is programmed for no digital voice operation (analog
only) or one of the two digital voice formats supported (ProVoice or Aegis). Aegis or ProVoice
programmed systems have three (3) different voice modes: clear (analog), digital, and private. The voice
modes are programmed on a per-group basis within each trunked system and on a per-channel basis within
each conventional system. A radio must be equipped with the encrypt/decrypt option before it will operate
in private mode.
Current ProVoice Conventional operation is for talk-around mode only.
Table 15-1: Transmit/Receive Mode Compatibility for Aegis/ProVoice Operation
GROUP/CHANNEL
PROGRAMMING
(TRANSMIT)
CLEAR
RECEIVE DIGITAL
RECEIVE PRIVATE
RECEIVE
CLEAR Yes No No
DIGITAL Yes Yes No
PRIVATE Yes No Yes