Getting started
22
Q
Terminal Permanent Disable
Your TGR990 is provided with a feature that allows your Service
Provider to disable it permanently in case it is stolen or lost. When
your TGR990 is disabled permanently, it becomes inoperable.
After a Permanent Disable the TGR990 cannot be reenabled by
your Service Provider. You are recommended to disable your
TGR990 permanently only when you do not expect the terminal to
be recoverable any more.
Q
Selecting TMO or DMO Operation
General
In Trunked Mode Operation (TMO) the TGR990 is used with the
infrastructure services within system coverage.
In Direct Mode Operation (DMO) the TGR990 is used without
infrastructure services required.
Note:
While operating in DMO the propagation travels directly
from the transmitting terminal antenna to the receiving terminal
antenna, with no assistance from any base station or tower.
Therefore, the range is critically dependent on the position of the
user and the antenna. Be sure that the antenna is clear from the
body, cables, or other obstructions. As there is no tower-
mounted base station to assist, and the two users are usually
standing at ground level, the range is usually shorter than that
can be achieved towards a tower or hilltop. Any obstructions
(hills, buildings, etc.) between the users will further decrease the
range. Conversely, raising the terminal higher or moving to a
higher location may improve the range.
A TGR990 in DMO can communicate with the trunked system (and
vice-versa) through a gateway device. To use that feature, please
enable the gateway option in your TGR990 (see Gateway/Repeater
selection on page 33.
Note:
In DMO it is only possible to place Group Calls,
Emergency Group Calls and Private Half-duplex Calls.
TGR990_features.book Page 22 Thursday, December 3, 2009 9:43 AM
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