Eads TGR990 - General Information; Modes of Operation; Transmission Barring

General information
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General information
Q Modes of operation
Your radio has four modes of operation: network mode, direct mode,
gateway mode and repeater mode. In the network mode, the radio
operates using the TETRA network. In the direct mode, the radio
operates without the network, so that the radios communicate
directly with each other. In the direct mode, only some functions of
the radio are available. In the gateway mode, the radio acts as a link
between the TMO trunk mode and DMO direct mode subscribers,
normal use of the radio is disabled. In the repeater mode, the radio
acts as a link between two DMO channel subscribers, normal use as
a DMO radio is disabled.
Q Transmission barring
When transmission barring is active, the radio does not send any
signals to the network and only limited network services are
available. In the network mode, the radio can only receive group
calls and status and text messages addressed to talk groups,
providing that the radio is registered to the network. In the direct
mode, the radio can receive direct mode calls. When transmission
barring is active, the radio cannot re-register to the network, for
example, if it is switched off and then on again.
The limited network services in the network mode are only available
in the coverage area of the network cell where the radio was last
registered. The radio cannot register to other network cells while
transmission barring is active, and therefore the area of operation
may be limited.
TGR990_features.book Page 13 Thursday, December 3, 2009 9:43 AM