PSTN Telephony
PSTN (Public Switched Telephone Network) Telephony is the traditional circuit-switched telephone system that enables voice communication over copper wires, fiber optics, and wireless links using standardized protocols. It provides reliable, global connectivity for landline and mobile calls through a hierarchical network of switches and exchanges. This infrastructure forms the backbone for basic voice services, emergency calls, and legacy communication systems.
Developers should learn PSTN Telephony when building or integrating systems that require reliable voice communication, such as call centers, emergency services, or legacy business phone systems. It's essential for understanding telephony fundamentals, interfacing with traditional phone networks via APIs like SIP or TDM, and ensuring compliance with regulatory requirements in telecommunications applications.