Page "Frame Relay" Paragraph 6

Frame Relay has its technical base in the older X. 25 packet-switching technology, designed for transmitting data on analog voice lines.

Unlike X. 25, whose designers expected analog signals with a relative high risk of transmission errors, Frame Relay offers a fast packet technology running over links with a low risk of transmission errors, which means that the protocol does not attempt to correct errors.

When a Frame Relay network detects an error in a frame, it simply drops that frame.

The end points have the responsibility for detecting and retransmitting dropped frames.

( However, digital networks offer an incidence of error extraordinarily small relative to that of analog networks.