Modem 5 : Device utilized to convert computer data into sound that can be transmitted over phone lines. First used to send telegrams the modem received the name from the process of modulation and demodulation at the receiving end
Young & Company Electric Power Products and Related Engineering Services, Glossary of Electrical Terms, http://www.youngco.com/young2.asp?ID=4&Type=3, CA., USA 2001. (Electr Sfty - Amer) {514}