noun
wire telegraph
Refers to telegraph communication using physical wires, as opposed to wireless telegraphy. Technical and somewhat historical term.
有線電信は19世紀に広く使われた通信手段だ。
Wire telegraphy was a widely used means of communication in the 19th century.
Wireless telegraphy, contrasting with 有線電信 which uses physical wires.
Compound of 有線 (yūsen, 'wired') and 電信 (denshin, 'telegraph').