Frame Relay (FR) 80- ISDN 188 . OSI. FR X.25 ISDN 21.1.
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Frame Relay
Frame Relay
OSI. .
Frame Relay . , , . Frame Relay .
Frame Relay :
- (DTE);
- (DCE);
- FRAD (Frame Relay Access Device).
Frame Relay . 21.4. , -, ..
Frame Relay (virtual circuits). , . Frame Relay - (SVC, Switched Virtual Circuit) (PVC, Permanent Virtual Circuit).
SVC .
PVC , .
Frame Relay DLCI (Data-Link Connection Identifier). DLCI .