Keywords

#public_switched_telephone_network

Public switched telephone network

Aggregate of all public telephone networks

The public switched telephone network (PSTN) is the aggregate of the world's telephone networks that are operated by national, regional, or local telephony operators. It provides infrastructure and services for public telephony. The PSTN consists of telephone lines, fiber-optic cables, microwave transmission links, cellular networks, communications satellites, and undersea telephone cables interconnected by switching centers, such as central offices, network tandems, and international gateways, which allow telephone users to communicate with each other.

Mon 9th

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Public switched telephone network Telephone exchange Telephone network Circuit switching Network switching subsystem Routing in the PSTN Cellular network Business telephone system Telephone number Plain old telephone service
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