1、 KSKSKSKS KSKSKSK KSKSKS KSKSK KSKS KSK KS KS X 3305 KS X 3305:2008 2008 10 31 http:/www.kats.go.krKS X 3305:2008 : ( ) ( ) () ()SJ ( ) : (http:/www.standard.go.kr) ： ： 1980 12 30 ： 2008 10 31 2008-0734 ： ： ( 025097262) (http:/www.kats.go.kr). 10 5 , . KS X 3305:2008 Information technology Telecommu
2、nications and information exchange between systems High-level Data Link Control(HDLC) procedures Elements of procedures 1 KS X 3304 HDLC . HDLC 2 . , , , , , , , . HDLC HDLC . 2 . . ( ) . KS X 0001 9, 9： KS X 3304, ISO 2382 9： 1988, Data processing Vocabulary 3 KS X 0001 9 . 3.1 (abort) 1 , 2 ( ) KS
3、 X 3305:2008 2 3.2 (accept) (1 , 2 ) 3.3 (address field) ( ) 2 8( 8 ) 3.4 (address field extension) 3.5 (basic status) 2 3.6 (centralized control) 1 1 3.7 (combined) . . a) b) (flow) c) d) 3.8 (command) 1 2 . 3.9 (command frame) . a) 1 b) . 3.10 (contention mode) KS X 3305:2008 3 3.11 (control field
4、) 8 ( 10 ) . a) 2 b) 2 1 3.12 (control field extension) 3.13 (data communication) KS X 0001 9 09.01.01 . 3.14 (data link) “ ” . 3.15 (data link level) (1 , 2 ) . . a) ( ) “0” ( ) “0” b) c) , d) 3.16 (data transmission) KS X 0001 9 09.01.02 . 3.17 (duplex transmission) KS X 0001 9 09.03.07( ) . 3.18
5、(exception condition) 2 KS X 3305:2008 4 3.19 (flag sequence) “01111110” 3.20 (frame) 32 , . . 3.21 (FCS)(frame check sequence) 3.22 (half-duplex transmission) KS X 0001 9 09.03.06(- ) . 3.23 (higher level) , , , . 3.24 (information field) I UI (7.1 ). 3.25 (interframe time fill) . 3.26 (invalid fra
6、me) . a) . b) 32 . 3.27 1 (primary station) 1 , , 1 . a) b) KS X 3305:2008 5 c) 3.28 1 2 (primary/secondary) 1 2 3.29 (response) , 2 1 . 3.30 (response frame) . a) 2 b) . 3.31 2 (secondary station) 1 2 . 3.32 2 (secondary station status) 1 2 3.33 (two-way alternate data communication) ISO 2382 9： 19
7、88 09.05.03 . 3.34 (two-way simultaneous data communication) ISO 2382 9： 1988 09.05.02 . 3.35 (unnumbered commands) 3.36 (unnumbered responses) 4 4.1 4.1.1 KS X 3305:2008 6 1 , 2 , . . 4.1.2 7 “1” ( “0” ) . 7 “1” , . 7 “1” 15 “1” . 4.1.3 . . 4.2 15 “1” . . 5 . 5.1 . a) (Normal Response Mode, NRM) b)
8、 (Asynchronous Response Mode, ARM) c) (Asynchronous Balanced Mode, ABM) 5.1.1 (NRM) NRM . NRM 2 1 . 2 . 1 , . 2 . 2 1 . 5.1.2 (ARM) ARM . ARM 2 1 . KS X 3305:2008 7 1 , / 2 ( , , ) . 5.1.3 (ABM) ABM . ABM , . 1 / 2 ( , , ) . 5.2 . a) (Normal Disconnected Mode, NDM) b) (Asynchronous Disconnected Mode
9、, ADM) c) (Initialization Mode, IM) 2 ( .) (NDM ADM) . 2 (IM) . (NDM ADM) 2 . . a) ARM b) 1 2 c) 1 2 2 . . 2 a) g) . a) (SNRM , SARM , SNRME , SARME , SIM DISC ) b) XID c) TEST d) UP e) 1 DM , RIM , XID RD f) UI g) UI ADM 2 ( SABM , SABME , SIM DISC ). , , XID , UI TEST . KS X 3305:2008 8 (NDM ADM)
10、2 P “1” , F “1” DM . (NDM ADM) 2 DISC , DM . 2 DISC , UA . 2 DISC UA . 2 DIS a) c) . a) 2 b) 2 c) 2 off-line(local) on-line ( ) 2 . 5.2.1 (NDM) 2 I I . 2 UI UI . 2 P “1” ( P “0” UP ) , . P “0” UP . 2 , XID , UI TEST . 2 DISC , UA . XID TEST , XID TEST . 2 , XID TEST (UI .) P “1” , DM . 2 RIM . 2 P “
11、1” UI , Ul , DM RIM . 2 , XID TEST P “O” UP DM RIM . 2 , XID , UI , TEST UP P “0” , . 5.2.2 (ADM) 2 ( ) , I ( I I ) I ( I I ) . 2 ( ) UI ( UI UI ) UI ( UI UI ) . 2 KS X 3305:2008 9 , . UI , DM , XID 2 RIM . UI . 2 , XID , UI TEST . 2 DISC , , UA . XID TEST XID TEST . 2 , XID TEST P “1” (UI .) , DM 2
12、 RIM . 2 P “1” UI , UI , DM RIM . 2 , XID , UI , TEST UP P “0” . , (SABM, SABME SIM) . , DM , RIM . 5.2.3 (IM) 2 1 , . 1 2 , 2 . 2 , 1 . 2 SIM UA . 2 RIM SIM . 1 2 . 2 UA IM . 6 6.1 6.1.1 (supervisory) , , 3 1 . KS X 3305:2008 10 1 1 2 3 4 5 6 7 8 / (I ) 0 N(S) P/F N(R) / (S ) 1 0 S S P/F N(R) / (U
13、) 1 1 M M P/F M M M N(S) ： ( 2 ) N(R) ： ( 6 ) S ： (supervisory) M ： P/F ： 1 / (final) 2 6.1.2 (I ) I . N(S), N(R), P/F . I (acknowlege) N(S), N(R) “1” “0” P/F . 6.1.3 (supervisory format) S I , I , I . N(R), P/F . S N(R) “1” “0” P/F . 6.1.4 (unnumbered format) U . P/F . 32 / . 6.2 6.2.1 (modulus) I
14、0 1 ( 8 128 ). . I . I . 6.2.2 HDLC I V(S) V(R) . 2 1 I V(S) , 1 I V(R) . KS X 3305:2008 11 1 2 2 V(S) V(R) . I V(S) , I V(R) . a) V(S) V(S) I . V(S) 0 ( 1) . V(S) I 1 . N(R) X X ( 1) . b) N(S) N(S) I , I V(S) . c) V(R) V(R) I 0 ( 1) . V(R) N(s) V(R) I 1 . d) N(R) N(R) I S P/F “0” SREJ , I N(S) . P/F “0” SREJ , I S N(R) V(R) . N(R) N(R) 1； I . P/F “0” SREJ N(R) N(R) N(S) I . P/F “0” SREJ 2 I . . 6.2.3 / (P/F) 1 2 1 . “1” . a) NRM 2 b) ARM 2 ABM 6.3 / (P/F) P/F ( P , F )
