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 16: 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
MN006260A01-AG
Chapter 3 : Modes
73
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