PSTNkäyttö
PSTNkäyttö refers to the use of the Public Switched Telephone Network (PSTN). The PSTN is the traditional circuit-switched telephone network that has been in place for over a century. It utilizes copper wire infrastructure to transmit voice communications between telephones. When a call is made, a dedicated physical circuit is established between the two endpoints for the duration of the call. This ensures a consistent and high-quality audio connection.
Historically, PSTNkäyttö was the primary method for making and receiving phone calls, both for residential and
Voice over Internet Protocol (VoIP) is a major competitor, transmitting voice signals as data packets over the