AM transmitter, FM transmitter, RT transmitter, TelAutography, Teletype, Teletype network, Teletyping, amateur transmitter, beacon, call box, closed-circuit telegraphy, code, coin telephone, desk telephone, dial telephone, duplex telegraphy, electricity, extension, facsimile telegraph, fan marker, interrupter, key, microphone, mouthpiece, multiplex telegraphy, news ticker, pay station, phone, public telephone, push-button telephone, quadruplex telegraphy, radiator, radio beacon, radio range beacon, radio transmitter, radiomicrophone, radiosonde, railroad telegraphy, receiver, sender, simplex telegraphy, single-current telegraphy, sounder, stock ticker, submarine telegraphy, telegraphics, telegraphy, telephone, telephone booth, telephone engineering, telephone extension, telephone mechanics, telephone receiver, telephonics, telephony, teleprinter, teletypewriter, teletypewriting, televisor, telex, ticker, transceiver, typotelegraph, typotelegraphy, video transmitter, wall telephone, wire service