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.
Types of ISDN Network. There are two common types of ISDN networks. BRI which stands for Basic rate interface and the other type is PRI which stands for Primary rate interface. Lets these two types below. BRI-Basic Rate Interface: It possess two 64 B-channels, 1 D-channel for controlled transmitting of information.ypes of ISDN Network. There are two common types of ISDN networks. BRI which stands for Basic rate interface and the other type is PRI which stands for Primary rate interface. Lets these two types below. BRI-Basic Rate Interface: It possess two 64 B-channels, 1 D-channel for controlled transmitting of information.