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Glossary
This glossary is a list of specialized terms used in this manual.
ACK
Active Channel
Analog Signal
ARS
ASTRO 25
ASTRO
Conventional
Autoscan
Bluetooth
Acknowledgment of communication.
A channel that has traffic on it.
An RF signal that has a continuous nature rather than a pulsed or discrete nature.
Automatic Registration Service
Motorola standard for wireless digital trunked communications.
Motorola standard for wireless digital conventional communications.
A feature that allows the radio to automatically scan the members of a scan list.
Bluetooth is an open wireless technology standard for exchanging data over short
English distances from fixed and mobile devices with high levels of security.
Bluetooth Pairing Bluetooth pairing occurs when two bluetooth devices exchanged a passkey to form a paired Bluetooth wireless connection.
Call Alert Privately page an individual by sending an audible tone.
Carrier Squelch Feature that responds to the presence of an RF carrier by opening or unmuting (turning on) a receiver’s audio circuit. A squelch circuit silences the radio when no signal is being received so that the user does not have to listen to “noise”.
Central Controller A software-controlled, computer-driven device that receives and generates data for the trunked radios assigned to it. It monitors and directs the
Channel operations of the trunked repeaters.
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
COTS
Cursor
A scan list that includes only conventional channels.
Commercial Off-The-Shelf
A visual tracking marker (a blinking line) that indicates a location on the display.
Deadlock
Digital Private
Line (DPL)
Digital Signal
Dispatcher
DSP
Dynamic
Regrouping
DSR
EID
Displayed by the radio after three failed attempts to unlock the radio. The radio must be powered off and on prior to another attempt.
A type of coded squelch using data bursts. Similar to PL except a digital code is used instead of a tone.
An RF signal that has a pulsed, or discrete, nature, rather than a continuous nature.
An individual who has radio system management duties.
Digital Signal Processing
A feature that allows the dispatcher to temporarily reassign selected radios to a single special channel so they can communicate with each other.
Dynamic System Resilience
Encrypted Integrated Data 191
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ESN
Failsoft
FCC
FM
Hang Up
Home screen
IV&D
KVL
LCD
LED
Electrical Serial Number
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.
Federal Communications
Commission.
Frequency Modulation
Disconnect.
The first display information after the radio completes its self test.
Integrated Voice and Data
Key-variable loader: A device for loading encryption keys into the radio.
Liquid crystal display.
Light-emitting diode.
Li-Ion
Man Down
MCW
MDC
Menu Entry
Monitor
Lithium ion.
A life-saving feature that senses the radio user may be in trouble by monitoring the whether the radio is in a vertical or horizontal position or whether the radio is motionless.
When this feature is triggered, the radio alerts the user with audio and visual alerts. It can also trigger Emergency Alarm the Post-Alert Timer is not cancelled.
Mission Critical Wireless
Motorola Data Communication
A software-activated feature shown at the bottom of the display – selection of these features is controlled by the
, , and buttons.
Check channel activity by pressing the Monitor button. If the channel is clear, you hear
Multi-System
Talkgroup Scan
List
Network Access
Code
NiMH
Non-Tactical/
Revert
OCW
OTAR static. If the channel is in use, you hear conversation. It also serves as a way to check the volume level of the radio, since the radio “opens the squelch” when the monitor button is pressed.
A scan list that can include both talkgroups (trunked) and channels (conventional).
Network Access Code (NAC) operates on digital channels to reduce voice channel interference between adjacent systems and sites.
Nickel-metal-hydride.
The user talks on a preprogrammed emergency channel. The emergency alarm is sent out on this same channel.
Operation Critical Wireless
Over-the-air rekeying.
Page
Personality
PIN
PremierOne
A one-way alert, with audio and/or display messages.
A set of unique features specific to a radio.
Personal Identification Number
A software application which streamlines critical real time operations and simplifies system administration to deliver accurate, consistent and integrated information remotely to the requestors.
Preprogrammed Refers to a software feature that has been activated by a qualified radio technician.
Private
(Conversation)
Call
A feature that lets you have a private conversation with another radio user in the talkgroup.
Private Line (PL) A sub-audible tone that is transmitted such that only receivers decoding the tone receives it.
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Programmable
PTT
Radio Frequency
(RF)
Repeater
Selective Call
Refers to a radio control that can have a radio feature assigned to it.
Push-To-Talk. The PTT button engages the transmitter and puts the radio in transmit (send) operation when pressed.
The part of the general frequency spectrum between the audio and infrared light regions (about 10 kHz to
10,000,000 MHz).
A conventional radio feature, where you talk through a receive/transmit facility that retransmits received signals, in order to improve communications range and coverage.
A feature that allows you to call a selected individual, intended to provide privacy and to eliminate the annoyance of having to listen to
Selective Switch Any digital P25 traffic having the correct Network Access
Code and the correct talkgroup.
Squelch conversations of no interest to you.
Special electronic circuitry, added to the receiver of a radio, that reduces, or cuts off, unwanted signals before they are heard in the speaker.
SSI
Standby
Synchronous Serial Interface
An operating condition whereby the radio’s speaker is muted but still continues to receive data.
Status Calls
Tactical/ Non-
Revert
Pre-defined text messages that allow the user to send a conditional message without talking.
The user talks on the channel that was selected before the radio entered the emergency state.
Talkaround
Talkgroup
Bypass a repeater and talk directly to another unit for easy local unit-to-unit communications.
An organization or group of radio users who communicate with each other using the same communication path.
Text Messaging Service TMS
Trunking The automatic sharing of communications paths between a large number of users (see
Conventional).
Trunking Priority
Monitor Scan List
A scan list that includes talkgroups that are all from the same trunking system.
USK
UTC
Unique Shadow Key.
Coordinated Universal Time.
The international time standard
(formerly Greenwich Mean
Time, or GMT). Zero hours
UTC is midnight in Greenwich,
England, which is located at 0
Zone degrees longitude. Everything east of Greenwich (up to 180 degrees) is later in time; everything west is earlier.
There are 42 time authorities around the world that are constantly synchronizing with each other. Abbreviated as
UTC (English backronym =
Universal Time, Coordinated), it is also known as Zulu (Z) Time.
A grouping of channels.
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