A system of two way communication by loudspeaker
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AnswerCrossword Clue
talkbackA system of two-way communication by loudspeaker
talkbacksA system of two-way communication by loudspeaker
speakerphonea combination microphone and loudspeaker device for two-way communication by telephone lines
speakerphonesSPEAKERPHONE, a combination microphone and loudspeaker device for two-way communication by telephone lines
telexestwo-way teletypewriter service channeled through a public telecommunications system for instantaneous, direct communication between subscribers at remote locations
telextwo-way teletypewriter service channeled through a public telecommunications system for instantaneous, direct communication between subscribers at remote locations
telexingtwo-way teletypewriter service channeled through a public telecommunications system for instantaneous, direct communication between subscribers at remote locations