32 System Feature Overview
April 2011 68007024085
An IP-based ADP application can monitor call related activities. Based on the activities, if the
application detects an unauthorized radio’s attempt to access the system, it can select one of the
following ways to prevent the unauthorized access:
• The application requests the repeater to send a Radio Inhibit command to the receiving
radio over-the-air. The repeater forwards the acknowledgement from the radio to the
application. The application provides an indication to the user that the command was a
success or failure. Similarly, the application can request a repeater to send an Uninhibit
command for a disabled radio.
• When the feature is disabled in a radio, the radio ignores all Inhibit commands. With the
release of software version R01.07.00, the application can request the repeater to stop
repeating the bursts received from an unauthorized radio over the outbound RF
repeater channel (for the duration of the unauthorized radio key-up). This solution also
prevents outbound over-the-air transmissions received from an unauthorized radio.
• In software versions R01.07.00 or later, MOTOTRBO supports the IP Console Radio
Enable/Disable commands, which can not be disabled in a radio using the CPS. These
commands can only be initiated by the application, and can not be issued by a radio.
The repeater processes the IP Console Radio Enable/Disable commands only if it
receives over the IP interface. The repeater schedules the IP Console Radio Disable
command for over-the-air transmission to the target radio in the system. A radio always
processes the IP Console Radio Disable command from the repeater and disables itself,
similar to the Radio Disable command. Similarly, the application can schedule an IP
Console Radio Enable command via the IP interface.
2.3.3.3 Remote Monitor
The Remote Monitor feature allows a remote user to activate a target radio’s microphone and
transmitter for a period of time. A call is silently set up on the target radio, and its PTT is controlled
remotely without any indications given to the end user. The duration that the target radio transmits
after receiving a Remote Monitor command is set in the target radio through the CPS. When
receiving the Remote Monitor command, the target radio initiates a Private Call back to the
originator of the Remote Monitor command.
This feature is used to ascertain the situation of a target radio which is powered-on, but is
unresponsive. This is beneficial in a number of situations including:
•theft,
• incapacity of the radio user, or
• allowing the initiator of an Emergency Call to communicate hands-free in an emergency
situation.
In MOTOTRBO systems, Remote Monitor 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. To permit (or prevent) a
radio from receiving and responding to this command, go to the “Signaling Systems” settings in the
CPS. When a radio is configured to decode the remote monitor command, the duration that the
target radio transmits after receiving a Remote Monitor command is also set in the CPS “Signaling
Systems” settings of the target radio.
The Remote Monitor feature may be activated on a disabled radio. Remote Monitor could also be
programmed to be activated on radios that are in emergency mode only.
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