Motorola ASTRO Digital XTS 3000 User Manual page 74

Additional Information
PTT
Radio-To-Landline
Repeater
RF
Softkeys
Squelch
Standby
Talkgroup
Trunking
Zone
68
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
Features shown on the display with a key-like outline -
selection of these features is controlled by the
N
buttons
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
M
and