ocr: Called and cleared DTE From DTE From DCE State T C R State 0 1 ON OFFI 0 ONOFF Name No. DCE ume outs DTE time-limits No. Name T7 Ready Ready 02 T14A 4 T4B 9 10B Call accepted SYN BEL SYN call Incoming( 8) 9,15- *(60) (T14B) 0,5 6 DCE Waiting BEL SYN EYN (108) DCE provided information 1AS 108 SYN 6B)DCE Waiting SYN SYN 1)Connection in progress 12)Ready for data 12.19 16 Data 13 transfer 13)Data transter T15 Clear (19) 0.5 DTE indication 20 T6 Clear confir 4 mation DCE Ready (21) 0 S z- CCITT-25074 - - - Ready Ready 18 FIGURE B-2/X.21 Example of sequences of events: successful and cleared call a ...
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