79
GLOSSARY
Agency - An agency is composed of multiple fleets. Units can
be programmed to initiate agency calls to access
multiple fleets. (Trunked Mode Only)
Base/Unit
Operation - A programmed option used in some fleets so units
can only hear and talk to a base dispatch unit, not to
other mobiles or personals in the group. In this mode
of operation, when a unit in a particular group is
talking to the base dispatch unit, all other mobile
and personal radios in that group will receive a
"System Busy" tone if they try to access the system.
(Trunked Mode Only)
Control
Channel - a radio channel in a trunked system that is used to
digitally communicate with the radios operating on
the system when they are not engaged in active
voice communications.
Conventional
Channel - a radio channel (transmit/receive) that is allocated
for conventional (non-trunked) use and may be
manually selected by the operator.
Conventional
Mode - communicating on radio channels allocated for
conventional use (i.e. conventional system).
CCT - Carrier Controlled Timer - a programmable timer
that will disable a transmission if the length is
exceeded.
CG - Channel Guard - a method of controlling speaker
mute with a tone or digital code.
Fleet - A fleet of users consists of multiple groups
(subfleets). Radios can be programmed to make fleet
calls to simultaneously access multiple user groups.
(Trunked Mode Only)