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Emergency Alarms and Calls are separate functions that can be individually enabled or 
disabled on each SMARTNET/SmartZone and P25 Trunked system. The Emergency 
option switch is required for these functions. Other emergency features are as follows:

• Emergency Alarms are transmitted on the selected talk group if emergency calls are 

disabled, and on the emergency talk group if emergency calls are enabled.

• Emergency Call talk group selection priority is as follows. For example, if a global 

emergency channel is not programmed, the emergency talk group of the selected 
channel is used and so on.

Global (radio wide) emergency channel

Emergency group of the selected channel

Talk group of the selected channel

Announcement group of the selected channel

• The emergency programming of the system to which that emergency talk group is 

linked controls the emergency operation.

An emergency alarm is a special transmission that alerts a dispatcher of an emergency 
situation. It is sent automatically by simply pressing Emergency option switch. The system 
to which the emergency channel is linked must have Emergency Alarms enabled. If not, 
Emergency Alarms are disabled. The alarm is sent on the control channel using Motorola 
proprietary signaling.

Proceed as follows to send an emergency alarm:

1 If required, select a channel of a system on which Emergency Alarms are enabled and 

then press the EMER option switch. The radio then automatically transmits the 
emergency alarm.

2 Either Normal or Silent operation can be programmed. With the Normal mode, the red 

LED lights, the emergency tone sounds, and “EMERGNCY” flashes in the display. 
This indication continues to flash until the alarm mode is ended (see step 4). If silent 
programmed or the Surveillance mode is selected (see Section 4.9), none of these 
indications occur. If “No Receive Activity During Emergency” is programmed, receive 
audio, the front panel LED, and receive icons are disabled in the receive mode.

3 When the emergency alarm is acknowledged, “ACK RCVD” is briefly displayed and 

the emergency acknowledge tone (two beeps) sounds. Silent operation may also be 
programmed in which case no tone sounds and there is no indication that an 
acknowledgment occurred.