P.A.
public address system
PA system
P.A. system
PA
acoustic device
coupler
repeater
phone
telephone set
telephone
mixing console
divider
squawk box
squawker
intercom speaker
phone system
telephone system
converter
broadcaster
television equipment
video equipment
scrambler
spaceshifting
plain old telephone service
electronic communication
radio
tweeter
player
receiving set
triamping
intercom
radio receiver
wireless
barefoot
radio set
tuner
microphone
duplexer
matrix mixer
telephonograph
blowhorn
sound system
blue box
delta-sigma converter
modem
set
sigma-delta converter
people's microphone
reverb
tannoy
phaser
human microphone
expander
effects unit
multimedia system
multimedia
telecommunication equipment
telephonometric
denoise
videophone
telecom system
telecommunication system
telecom equipment
metachannel
commlink
biamping
door bell phone
hearing aid
tap
acoustic modem
helium descrambler
-phone
digital communications technology
audio amplifier
teleprinting
door phone
deaf-aid
signaling device
answering machine
Fullerphone
beacon
dequantize
digital-to-analog converter
television system
transmitter
television
digital-analog converter
hi-fi
frame grabber
asynchronous transfer mode
radiotelephone
ATM
studio monitor