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bn:02210769n
Noun Concept
ES
conmutador telefónico
EN
A telephone switchboard was a device used to connect circuits of telephones to establish telephone calls between users or other switchboards, throughout the 20th century. Wikipedia
Relations
Sources
IS A
equipos de telecomunicaciones
HAS INSTANCE
EN
DMS-100
Wikidata
ES
conmutador telefónico

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