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Wechselsprechanlage f =, -n
génér.	intercommunication system; talk-back circuit; two-way loud speaker
chim.	two-way intercom; two-way radio
comm.	intercommunicating system; interphone; intercommunication system
constr.	entry phone; interphone system; intercommunication (system)
ingén.	loudspeaker communication
techn.	intercom; intercom system; two-way intercom system
téléc.	key telephone system; key system; press-to-talk system; two-way telephone system
écon.	multiline telephone installation