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.
Unlike the ISDN, the information bit-rate of services supported by the B-ISDN very likely differ from the. gross transfer rate of access/transit lines and interfaces. Therefore, the ISDN attributes Information. Transfer Rate and Channel Rate will be changed for B-ISDN connections.