公衆交換電話網
1. Public switched telephone networkThe public switched telephone network (PSTN) is the network of the world's public circuit-switched telephone networks. It consists of telephone lines, fiber optic cables, microwave transmission links, cellular networks, communications satellites, and undersea telephone cables, all inter-connected by switching centers, thus allowing any telephone in the world to communicate with any other.
Read “Public switched telephone network” on English Wikipedia
Read “公衆交換電話網” on Japanese Wikipedia
Read “Public switched telephone network” on DBpedia
Read “Public switched telephone network” on English Wikipedia
Read “公衆交換電話網” on Japanese Wikipedia
Read “Public switched telephone network” on DBpedia
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