In contrast to X.25, Frame Relay relies on higher layer transport protocols to perform these functions. The following example demonstrates the difference in the service overhead between X.25 and Frame Relay. Excellent collection of links to Frame Relay and FRAD resources. The Frame Relay Forum is a non-profit organization dedicated to promoting the acceptance and implementation of frame relay. Their site offers links to an organizational overview, membership, newsletters, press releases and committee information.
Access is free, but registration is required.