でんわこうかんき
電話交換機
1. telephone switchboard
2. Telephone exchangeIn the field of telecommunications, a telephone exchange or telephone switch is a system of electronic components that connects telephone calls. A central office (CO) is the physical building used to house inside plant equipment including telephone switches, which make telephone calls "work" in the sense of making connections and relaying the speech information.
Read “Telephone exchange” on English Wikipedia
Read “電話交換機” on Japanese Wikipedia
Read “Telephone exchange” on DBpedia
Read “Telephone exchange” on English Wikipedia
Read “電話交換機” on Japanese Wikipedia
Read “Telephone exchange” on DBpedia
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