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.
1. Re: ISDN layer 2 problem. Status of ISDN Layer 2 with Terminal Endpoint Identifier (TEI) number and multiframe structure state. The valid TEI number range is 64 to 126. The most often seen Layer 2 states are MULTIPLE_FRAME_ESTABLISHED and TEI_ASSIGNED. A state=MULTIPLE_FRAME_ESTABLISHED indicates there is data link connectivity to the Telco ISDN switch. This is the state that you should see under normal operations. Any other state usually indicates a problem on the circuit.