25. This protocol is an industry-standard, switched
data link layer protocol that handles multiple virtual circuits (VC). Frame Relay is
streamlined to eliminate some of the time-consuming processes, such as error
correction and ?¬‚ow control, that were employed in X.25 to compensate for older, less
reliable communication links.
?– ATM: This protocol is the international standard for cell relay in which multiple
service types, such as voice, video, and data, are conveyed in ?¬?xed-length (53-byte)
cells. ATM, a cell-switched technology, uses ?¬?xed-length cells, which allow
processing to occur in hardware, thereby reducing transit delays. ATM is designed to
take advantage of high-speed transmission media such as T3, E3, and SONET.
?– Broadband: Broadband in data communications typically refers to data transmission
where multiple pieces of data are sent simultaneously to increase the effective rate of
transmission, regardless of the actual data rate. In network engineering, this term refers
to transmission methods where two or more signals share a medium, such as the
following technologies:
??” DSL-PPP over Ethernet (PPPoE) and PPP over ATM (PPPoA): A
family of technologies that provide digital data transmission over the
wires of a local telephone network.
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