System Feature Overview 33
68007024085 April 2011
2.3.3.4 Radio Check
The Radio Check feature checks if a radio is active in a system without notifying the user of the
target radio. Besides the Busy LED, there is no other audible or visual indication on the checked
radio. The receiving radio automatically and silently responds with an acknowledgement to the
initiating radio.
This feature is used to discreetly determine if a target radio is available. For example, if a radio
user is non-responsive, Radio Check could be used to determine if the target radio is switched on
and monitoring the channel. If the target radio responds with an acknowledgement, the initiator
could then take additional action such as using the Remote Monitor command to activate the
target radio’s PTT.
In MOTOTRBO systems, Radio Check is configured in portable and mobile radio CPS. To allow a
radio to use this function, it must be enabled in the CPS “Menu” settings. All MOTOTRBO radios
will receive and respond to a Radio Check, i.e. this feature cannot be turned off in the CPS.
2.3.3.5 Call Alert
The Call Alert feature allows a radio user to essentially page another user. When a radio receives
a Call Alert, a persistent audible and visual alert is presented to the user. The initiator of the Call
Alert is also displayed. If a user is away from his radio at the time of the reception, the alert
remains until the user clears the Call Alert screen. If the user presses the PTT while the Call Alert
screen is active, he starts an Individual Call to the originator of the Call Alert. For in-vehicle
applications, this is often used in conjunction with the Horn and Lights option. When a user is away
from his vehicle, a Call Alert can initiate the vehicle’s horn and lights to sound and flash, which
notifies the user to return to the vehicle and call the originator.
In MOTOTRBO systems, Call Alert is configured in portable and mobile radio CPS. To allow a
radio to use this function, it must be enabled in the CPS “Menu” settings. All MOTOTRBO radios
will receive and respond to a Call Alert (i.e. you cannot disable this feature by using the CPS).
2.3.3.6 Remote Voice Dekey
The Remote Voice Dekey feature allows a radio user to stop any interruptible voice transmission,
except for All Calls. This ability to remotely stop an interruptible voice transmission is provisioned
into the radio via the CPS and accessed via a programmable button.
NOTE: For the Remote Voice Dekey feature to operate consistently, all radios using the channel
should be provisioned with the ability to be interrupted. However, not all need to be
provisioned with the Remote Voice Dekey capability.
If some radios are provisioned without the ability to be interrupted (e.g., normally desirable for a
supervisor’s radio), then those radios’ transmissions cannot be interrupted and the radio user
receives a Remote Voice Dekey Failure Tone if Remote Voice Dekey is attempted while receiving
an uninterruptible transmission. The radios that are provisioned without the ability to be interrupted
(e.g., a supervisor’s radio) may still be provisioned with the Remote Voice Dekey feature, which
gives those radios the ability to interrupt another radio’s interruptible voice transmission.
For this feature, the initiating radio is not required to be a member of the voice call that is being
interrupted. Therefore, it is possible to interrupt a voice call, and then initiate a new call to a
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