Motorola APX 900 3 User Manual page 190

English
Channel
A group of characteristics such as transmit/receive
frequency pairs, radio parameters, and encryption
encoding.
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.
Cursor
A visual tracking marker (a blinking line) that indicates a
location on the display.
Deadlock
Displayed by the radio after three failed attempts to
unlock the radio. The radio must be powered off and on
prior to another attempt.
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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.
DSP
Digital Signal Processing.
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.
DSR
Dynamic System Resilience.
EID
Encrypted Integrated Data.
ESN
Electrical Serial Number.
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