#intercommunication_system__intercom  a communication system linking different rooms within a building or ship etc
  supertype:  #communication_system__communicationsystem  a system for communicating
  subtype:  #interphone  a telephonic intercommunication system linking different rooms in a building or ship etc
  part:  #squawk_box__squawker__intercom_speaker  the loudspeaker on an inter-com or public address system

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