
1) An intercommunication system 2) Building security device 3) Communication system 4) Household appliance 5) Intercommunication system 6) Internal telephone system 7) Monstercat artist 8) Office communication device 9) Office hookup 10) Office machine 11) Office speaker system 12) Office squawker 13) Office stepsaver
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https://www.crosswordclues.com/clue/intercom

1) Interphone 2) Squawk box
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https://www.crosswordclues.com/clue/intercom

An intercom (intercommunication device), talkback or doorphone is a stand-alone voice communications system for use within a building or small collection of buildings, functioning independently of the public telephone network. Intercoms are generally mounted permanently in buildings and vehicles. Intercoms can incorporate connections to public add...
Found on
http://en.wikipedia.org/wiki/Intercom

An in-store communication system used by employees to speak with one another.
Found on
http://www.encyclo.co.uk/local/20108

an intercommunication system. · a microphone or receiver of an intercommunication system.
Found on
https://www.infoplease.com/dictionary/intercom
No exact match found.