Motorola MTP8000Ex Series, Руководство пользователя по функциям

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• No success in sending the Silent Emergency Alarm and the maximum number of retries has been
reached.
• The control room terminates the Silent Ambience Listening.
• The Ambience Listening is disconnected due to another reason.
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.
3.5.11
Invisible Emergency
It is possible for the service provider to disable visual and audible indications of performing Emergency
Operations on the radio. The purpose of this feature is to hide the fact of using Emergency Operations
in a critical situation (e.g. direct attack on the user) and thus to provide additional layer of safety.
3.5.12
Emergency Alert
This feature allows the radio to send emergency alerts to other radios within its DMO coverage by
pressing the EMERGENCY button. Radios monitor a special DMO emergency frequency for possible
emergency alerts, even when they are in TMO.
First, a short transmission (emergency alert preamble) is sent to radios. The radios which receive this
transmission, enter the emergency alert mode. Then, if a DMO emergency call is ongoing, the radios
automatically join it.
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 DMO RF range of the
initiating radio, and must not be in a call.
The following table illustrates the dependencies between the current radio mode and the type of
emergency operation:
Table 16: Emergency Operation Dependencies
Initiated emergency Emergency alert received
(Yes/No)
DMO, MS-MS, idle Emergency Alert Yes
DMO, Repeater sync, idle Standard DMO Emergency No
DMO, Gateway sync, idle Standard DMO Emergency No
TMO, no coverage Emergency Alert Yes
NOTICE: The alert
detection perform-
ance may be re-
duced due to the
fact that the radio is
scanning for Base
Stations to regain
coverage.
Table continued…
MN002041A01–AA
Chapter 3: Modes
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