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Developed to address the slowness of X.25 network. FR specification removes flow control and error checking from the intermediate nodes.
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FR evolved from X.25 and ISDN. It operates on the first and second layer of OSI Reference Model. The standard proposed in 1984.
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Characteristics:
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line speed: 56Kbps - 1.544 Mbps ---> 36 Mbps ---ᡥ Mbps
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packet (variable size) oriented, switched communication method,
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connection-oriented technology based on the leased point-to-point circuits (PVC - Permanent Virtual Channel)
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not intended for time-sensitive applications due to its variable-length frames
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Hardware:
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FRED - Frame Relay Assembler / Disassembler
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FRND - Frame Relay Network Device (Node)
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Frame Relay Forum supported by Cisco, DEC, Northern Telecom, StrataCom
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Public network offering available from most public Carriers: AT&T, MCI, Sprint, RBOCs (RBOC=Regional Bell Operating Company)
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