The waterfall has been known as the Angel Falls since the Mid-20th century; they are named after Jimmie Angel, a US aviator, who was the first person to fly over the falls. Angel's ashes were scattered over the falls on 2 July 1960. The common Spanish name Salto Ãngel derives from his surname.
Integrated Services Digital Network (ISDN) is a set of communication standards for simultaneous digital transmission of voice, video, data, and other network services over the traditional circuits of the public switched telephone network. It was first defined in 1988 in the CCITT red book.
ISDN - Integrated Services Digital Network. ISDN - Telephone, keyboard, cable and bandwidth. Integrated Services Digital Network (ISDN) is a network technology that supports the digital transfer of simultaneous voice and data traffic along with support for video and fax. ISDN gained popularity around the world during the 1990s but has largely been supplanted by more modern long-distance networking technologies.