34 System Feature Overview
April 2011 68007024085
different group or individual. Once the original voice transmission is terminated via the Remote
Voice Dekey feature, the interrupting radio user can initiate a new call via any of the available call
initiation methods.
When the programmable button is pressed and an interruptible voice transmission is on the
channel, the radio attempts to stop the interruptible voice transmission. If the radio succeeds at
interrupting the voice transmission, the radio user receives a Remote Voice Dekey Success Tone
when the channel is successfully cleared down. If the radio fails to interrupt the voice transmission,
then the radio user typically receives a Remote Voice Dekey Failure Tone. The radio user whose
transmission was interrupted receives a Talk Prohibit Tone until the PTT is released.
2.3.4 Digital Emergency
MOTOTRBO offers a variety of emergency handling strategies that will fit the customer’s
organizational needs. In its basic form, MOTOTRBO provides the ability for a radio user in distress
to send a confirmed emergency alarm message, and emergency voice to a user on a supervisory
radio. The emergency alarm message contains the individual radio ID of the initiator. Upon
reception of an emergency alarm, the supervisor receives audible and visual indications of the
emergency and the initiating radio ID is displayed. Depending on configuration, emergency voice
may follow between the initiator and the supervisor. Once the supervisor handles the emergency
situation (i.e. solves the problem), he clears the emergency on the supervisor radio. Once the
initiator clears his emergency on the initiator radio, the emergency is considered over.
NOTE: A radio will not roam while reverted to a channel due to an emergency or when Active Site
Search is disabled. Reference the site roaming section for details on the interactions
between emergency and roaming.
Each mobile radio can program the Emergency Alarm to any of the programmable buttons,
whereas for the portable radio the Emergency Alarm can only be programmed to the orange
button. The Emergency Alarm can also be triggered externally through a footswitch for a mobile
application or any other applicable accessory. Pressing the emergency button causes the radio to
enter emergency mode, and begin its emergency process.
When a user presses the Emergency button, the radio gives audible and visual indications to show
that it has entered emergency mode. There is a CPS configurable option available, referred to as
Silent Emergency, which suppresses all indications of the emergency status on the user’s radio.
This feature is valuable in situations where an indication of an emergency state is not desirable.
Once the user breaks radio silence by pressing the PTT and speaking, the Silent Emergency
ends, and audible and visual indications return.
When the user’s radio is in the emergency mode, various other features are blocked that may
distract him from his communication with the supervisor. For example, the user will not be able to
initiate other features such as Scan, Private Call, or other command and control functions.
Once the emergency is complete (e.g. turn off and turn on the radio, or long/short press of the
emergency button depending on the radio configuration) these abilities will return.
The emergency sequence is generally made up of two major parts:
• the signaling and
• the following voice call.
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