Telephone transmission, i.e. using twisted pair telephone lines or any type of telephone network

Full Title

Data organisation or data communication aspects, specifically adapted for electrophonic musical tools or instruments > Transmission of musical instrument data, control or status information; Transmission, remote access or control of music data for electrophonic musical instruments > Physical layer or hardware aspects of transmission to or from an electrophonic musical instrument, e.g. voltage levels, bit streams, code words or symbols over a physical link connecting network nodes or instruments > Telephone transmission, i.e. using twisted pair telephone lines or any type of telephone network