What does PTSN stand for?

The correct interpretation of PTSN is "Public Telephone Switching Network." This term refers to the traditional network used for telephone communications, which is structured to connect calls through a system of switching stations. The network facilitates the transmission of voice communication among the public through telephony infrastructure.

This designation is important as it distinguishes the public network from private or specialized networks that are used for different communication purposes. Understanding the function of PTSN is crucial for professionals in the broadband and telecommunications field, as it encompasses essential details about how traditional telephone communications operate alongside newer technology.