That means the network devices correct the corrupt data or ask for the data to be retransmitted. Thus, the cost of such checking and retransmission is network delay. Frame Relay performs error detection only, not error correction. It thereby leaves the task of error correction to the protocols used by intelligent devices at each end of the network. As a result, since Frame Relay relies on the device at the end to perform retransmission and error recovery, there is significantly less processing required for the network and less overall delay.
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