Motorola MTP830, User Manual

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Private Call With Presence Check
This feature allows you to see if the calling party is available in DMO. When this feature is enabled, you can only
initiate a Private Call if the called radio is present on the same channel and responds with a presence check
acknowledgement.
Otherwise your radio displays Party Not Available .
Talkgroup for Individual Calls
Talkgroup for Individual Calls is a talkgroup that operates on a separate frequency allocated for individual (private)
calls only. Using this talkgroup optimizes frequency resources and helps not to block other talkgroups. The only
supported call types are: private calls and emergency calls (both private and group). Use this talkgroup each time you
need to make a private call.
When you select a Talkgroup for Individual Calls, your radio is not able to receive or initiate any group or broadcast
calls with priority lower than Emergency.
When you have selected a Talkgroup for Individual Calls and press the PTT button to start a Group Call, the radio:
• Rejects the call
• Plays a tone
• Displays the
Individual Calls Only message
Communication through Repeaters
Radios that are out of range and cannot communicate directly one with another in DMO Mode can do it through the
repeater. The repeater is a radio that repeats all communication on a chosen channel, and as a result increases radios’
DMO range.
DMO DMO
When the radio connects to a repeater, it plays a tone, displays the Repeater available message, and shows an
appropriate icon. When the radio looses connection with the repeater, it plays a tone, displays the Repeater not
available message, and the repeater icon is blinking.
Communication through Gateways
Gateway provides connectivity between radios operating in DMO Mode and the TETRA network, so that the DMO
radios can communicate with the TMO radios.
46 | Modes
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