The public switched telephone network (PSTN) is the aggregate of the world's circuit-switched telephone networks that are operated by national, regional, or local telephony operators, providing infrastructure and services for public telecommunication. The PSTN consists of telephone lines, fiber optic cables, microwave transmission links, cellular networks, communications satellites, and undersea telephone cables, all interconnected by switching centers, thus allowing any telephone in the world to communicate with any other.
Posts about Pstn
  • Choosing a VoIP Service

    … branch exchange which is a version of the PBX phone system used by most offices to route calls to the appropriate phones in your network as well as a PSTN gateway. This gateway sits between the VOiP PBX software and the analog signals of a public switch network that converts calls to and from the digital signals necessary for operation. What You Need…

    Dana Davis/ Growmap- 2 readers -
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