1835, “apparatus for signaling by musical notes” (devised by Sudré in 1828), from Fr. téléphone (c.1830), from télé- “far” (see tele-) + phone “sound” (see fame). Also used of other apparatus early 19c., including “instrument similar to a foghorn for signaling from ship to ship” (1844). The electrical communication tool was first described in modern form by P.Reis (1861); developed by Bell, and so called by him from 1876. The verb is attested from 1878.
Voice over Internet Protocol (VoIP) has become a mature technology that allows individuals to place phone calls using the Internet Protocol. VoIP utilizes the Internet infrastructure to make voice and video calls as opposed to the traditional public switched telephone network (PSTN) that has been in place for more than a century. VoIP service is less expensive to provide and operate as compared to traditional telephony. Another advantage of VoIP is that a subscriber can make a voice or video call from any global location with a broadband Internet connection. Modern VoIP telephony evolutionizes the boundaries of telephony by adding voice, presence management, chat and other services and by then embedding it into many business applications that are run on computers.