If you turn off the radio in the Silent Emergency Mode, the radio switches to pseudo power off state. In
this state, the radio appears to be turned off. However, the radio is still on and in the Silent Emergency
Mode. On turning the radio on during the pseudo power off state, the radio acts as during turning on
and still is in the Silent Emergency Mode.
3.5.9
Invisible Emergency
Your service provider can disable visual and audible indications on the radio in Emergency Operation.
This feature is called Invisible Emergency. Invisible Emergency provides an extra layer of safety when
using Emergency Operation in critical situations. Critical situations are such as a direct attack on the
user.
3.5.10
Emergency Alert
NOTE:
This is a Software Selling Feature.
This feature allows the radio to send emergency alerts to other radios within its Direct Mode Operation
(DMO) coverage by pressing the
Emergency
button.
Even in Trunked Mode Operation (TMO), the radio monitors a special DMO emergency frequency for
possible emergency alerts and responds to them by automatically joining the emergency call.
To initiate the emergency alert, the radio must be in MS-MS DMO mode or out of coverage in TMO
mode. The alert is not sent to the dispatch console.
To receive the emergency alert, the radio must be in DMO or TMO, within RF range of the initiating
radio, and must not be in a call. When the radio receives the emergency alert, it joins the call
automatically.
The following table illustrates the dependencies between the current radio mode and the type of
emergency operation:
Table 13: Emergency Operation Dependencies
Radio Mode
Initiate Emergency
Emergency Alert Received
(Yes/No)
DMO, MS-MS, idle
Emergency Alert
Yes
DMO, Repeater, idle
Standard DMO Emergency
Yes
DMO, Gateway, idle
Standard DMO Emergency
Yes
DMO, in call
Per communication mode
No
TMO, no coverage
Emergency Alert
Yes
TMO, in coverage, idle
Standard TMO Emergency
Yes
TMO, in coverage, in call
Standard TMO Emergency
No
Network Monitor, MS-MS
Emergency Alert
No
Network Monitor, Repeater
Standard DMO Emergency
No
Gateway operation, in cover-
age
Standard TMO Emergency
No
Repeater operation
Standard DMO Emergency
No
MN005826A01-AE
Chapter 3 : Modes
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