Frame Relay is a packet switching technology developed in the late 1980s and widely used in the 1990s. It utilizes virtual circuits, which can be established for each session (switched virtual circuits) or as permanent connections (permanent virtual circuits). Frame Relay is suitable for fiber optic cables with a low bit error rate but lacks error recovery and flow control. When errors are detected, data is simply discarded, reducing processing overhead and enabling high transmission rates. Large corporations often employ Frame Relay to connect LANs across buildings, providing an alternative to public Internet for intra-company traffic, especially with permanent virtual circuits.