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Advantages of frame relay over x.25?

Frame relay operates at a higher speed(1.544 mbps & currently 44.376mbps) By this it can easily be used instead of a mesh of T-1 or T-3 lines

Frame relay operates in just the physical and data link layers. By this it is used as a back bone nwtwork to provide services to protoclols that already have a network layer protocol.

It allows brusty data. in case of x.25 and t-line there is a fixed data rate

Frame relay allows a frame size of 9000 bytes, which can accommodate all LAN frames

Frame relay is less expensive than other traditional WAN

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