Communication Through Gateways; Gateway And Repeater Synchronization - Motorola MTP8000Ex Series Feature User Manual

3.4.9

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.
TMO
When the radio connects to a gateway, it plays a tone, displays the Gateway available message, and
shows an appropriate icon. When the radio looses connection with the gateway, it plays a tone,
displays the Gateway not available message, and the gateway icon is blinking.
NOTICE: A radio can either act as a gateway or repeater, but cannot be both at the same time.
3.4.10

Gateway and Repeater Synchronization

To communicate via gateways or repeaters, the radio requires synchronization with a gateway or a
repeater.
A gateway or a repeater sends presence signals to radios. If a radio receives presence signals, it stays
synchronized with the gateway or the repeater which sends the signals. If a radio fails to receive a
presence signal it does not immediately lose synchronization. The radio waits for another successful
presence for a time defined by your service provider. This function ensures that calls are not dropped
due to temporary reception issues.
If a gateway or a repeater is unavailable or the radio is not synchronized with a gateway or a repeater,
the following scenarios apply (depending on the setup configured by your service provider):
• The radio falls back to DMO mode.
• After pressing the PTT button, a prompt appears warning that the second press overrides the
gateway or repeater operation mode.
• No direct DMO calls are permitted.
In the second scenario, while the radio receives individual calls and group calls, and replying to
individual calls is possible, replying to group calls is not possible.
Send Feedback
TMO
DMO
MN002041A01–AA
Chapter 3: Modes
67