telephony
n. C1 Advanced US //ˈtɛɫəˌfoʊni// UK //təlˈɛfənˌi// tele·pho·ny
n. the use of telephone systems to make calls. It is a technical word for the technology and methods used to send sound over long distances.
n. the technology and methods used for the transmission of voice or data over a distance via telephone lines or wireless networks.
The company is upgrading its telephony system to support video calls.
Advances in telephony have made it possible for people to communicate instantly across the globe.
The transition from traditional copper wiring to fiber-optic cables has fundamentally transformed modern telephony, enabling higher data speeds and more reliable connections for both residential and commercial users.
From telephone + -y.