Analog Telephony
Analog telephony is the traditional method of voice communication that uses analog signals to transmit voice over copper wire telephone lines. It converts sound waves into continuous electrical signals that vary in amplitude and frequency, enabling basic voice calls through devices like landline phones. This technology formed the foundation of the public switched telephone network (PSTN) for over a century before digital systems became prevalent.
Developers should learn analog telephony when working with legacy telecommunication systems, integrating modern applications with traditional phone networks, or developing VoIP solutions that interface with PSTN. It's essential for understanding telephony fundamentals, troubleshooting connectivity issues in hybrid systems, and implementing features like fax support or alarm systems that still rely on analog lines.