A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

PSTN (Public Switched Telephony Network)

The PSTN is the international public circuit-switched telephony network, a blanket term covering such connections as telephone circuits, high-speed fibre optic cables, cellular networks and undersea telephone cables.

Standards used in the PSTN are defined by the ITU Telecommunication Standardization Sector (ITU-T).