8. Frame Relay
Frame Relay
FR (Frame Relay) X.25 . FR X.25. FR , .25, ( ). FR, .25 , , . FR , BER ( X.25 ). FR, ( ). FR , OSI, .. . FR ( ). FR . FR , OSI, - , . - ( X.25 ) FR . , . ( ) . ( ) - (). FR . FR . . 8.1 FR.
. 8.1. Frame Relay
, FR . X.25 ( ) FR . ITU-T Q.921 ITU-T Q.931. Q.921 , X.25. Q.931 , , ITU-T E.164, .25 ITU-T .121. .164 , (.. ) . FR , X.25. . FR LAP-F (Link Access Procedure for Frame mode bearer services) ITU-T Q.922. LAP-F.
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DLCI (Data Link Connection Identifier).
X.25 LN. FR 2, 3 4 . 3 4 DLCI 16 23 . 2 DLCI 10 , 1024 , 976, . DLCI=23 DLCI 131072 8126463. DLCI=0 ;
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