Glossary
English
79
Control Channel
In a trunking system, one of the channels
that is used to provide a continuous, two-
way/data communications path between
the central controller and all radios on the
system.
Conventional
Typically refers to radio-to-radio
communications, sometimes through a
repeater (see Trunking).
Conventional
Scan List
A scan list that includes only conventional
channels.
COTS Commercial Off-The-Shelf
Deadlock
Displayed by the radio on a DRSM after
three failed attempts to unlock the radio.
The radio must be powered off and on prior
to another attempt.
Digital Private
Line (DPL)
A type of coded squelch using data bursts.
Similar to PL except a digital code is used
instead of a tone.
Digital Signal
An RF signal that has a pulsed, or discrete,
nature, rather than a continuous nature.
Dispatcher
An individual who has radio system
management duties.
DRSM Display Remote Speaker Microphone
Term Definition
Dynamic
Regrouping
A feature that allows the dispatcher to
temporarily reassign selected radios to a
single special channel so they can
communicate with each other.
Failsoft
A feature that allows communications to
take place even though the central
controller has failed. Each trunked repeater
in the system transmits a data word
informing every radio that the system has
gone into failsoft.
FCC Federal Communications Commission.
FM Frequency Modulation
GCAI Global Common Accessory Interface
Hang Up Disconnect.
Home screen
The first display information on a DRSM
after the radio completes its self test.
KVL
Key-variable loader: A device for loading
encryption keys into the radio.
LCD Liquid crystal display.
LED Light-emitting diode.
Li-Ion Lithium ion.
Term Definition
APX_3000_M1.book Page 79 Thursday, November 7, 2013 4:48 PM
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