X.25 : It is a standard ITU-T standard protocol.It consists of PSE packet switching exchange nodes.X.25 model is based on traditional telephony concept.
Frame Relay : It is a packet switching telecommunication used for efficient data transfer which speeds up the transmission.It is used to connect LAN with public wide area networks.
Difference between of Frame Relay and X.25 :
Frame Relay | X.25 |
---|---|
It has informal data rate | It has fixed data rate |
It performs Multiplexing and switching at data link layer | It performs Multiplexing and switching at network layer |
Frame Relay does not support Hop-to-Hop error and flow control. | It performs Hop-to-Hop error and flow control at data link layer. |
It does not support End-to-End flow and error control. | It performs End-to-End flow and error control at network layer |
Congestion control is required in frame relay. | Congestion control is not required in X.25. |
Call control signaling requires separate logical connection from user data. | X.25 uses same data for call control signaling. |
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