Frame Relay (FR) 80- ISDN. OSI.
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 .
Frame Relay:
;
;
;
.
Frame Relay:
;
;
;
- .
ATM
(Asynchronous transfer Mode) 90- .
:
;
( ) ;
;
;
(Ethernet, IP, ISDN .).