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Wechselsprechanlage f =, -n
gen.	intercommunication system; talk-back circuit; two-way loud speaker
chem.	two-way intercom; two-way radio
commun.	intercommunicating system; interphone; intercommunication system
construct.	entry phone; interphone system
econ.	multiline telephone installation
eng.	loudspeaker communication
tech.	intercom; intercom system; two-way intercom system
telecom.	key telephone system; key system; press-to-talk system; two-way telephone system