switched telephone network
- Its abbreviation is STN. The multiple interconnected telephone networks in place worldwide, which enable most any phone to dial most any other phone around the globe. POTS is the basic service a PSTN provides. Such a network may also be used for data services, such as dial-up Internet access. Also called public switched telephone network, public telephone network, or public switched network (1).
- Abbreviation of super-twist nematic, or super-twisted nematic.