Motorola XTS 3000 用户手册

Acknowledgment of communication

A group of characteristics such as transmit/receive 

frequency pairs, radio parameters, and encryption 
encoding

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

Typically refers to radio-to-radio communications, 

sometimes through a repeater; does not use a 
trunking (controller) system (See Trunking)

An individual who has radio system management 

duties

Federal Communications Commission

Disconnect

Someone communicating through the public 

telephone system

A one-way alert, with audio and/or display messages

Push-To-Talk - the PTT switch engages the transmitter 

and puts the radio in transmit (send) operation when 
pressed

Communicating from a portable/mobile radio 

through the telephone system

A conventional radio feature, where you talk through 

a receive/transmit facility (repeater), that re-transmits 
received signals in order to improve communications 
range and coverage

Radio Frequency

The muting of audio circuits when received signal 

levels fall below a pre-determined threshold

An operating condition whereby the radio’s speaker is 

muted but still continues to receive data

An organization of radio users who communicate 

with each other

The automatic sharing of communications paths 

between a large number of users (See Conventional)

A grouping of channels

Model I Book  Page 33  Wednesday, August 14, 1996  8:51 AM