Rec. ITU-T H.230 (07/1995) � FRAME-SYNCHRONOUS CONTROL AND INDICATION SIGNALS FOR AUDIOVISUAL SYSTEMS
FOREWORD
CONTENTS
SUMMARY
1 Scope
2 Procedures
    2.1 C&I codes provided in Recommendation H.221
    2.2 Other C&I codes
        2.2.1 SBE method
        2.2.2 Double and triple SBE symbols
        2.2.3 MBE method
3 Definitions of C&I symbols
    3.1 C&I related to video
    3.2 C&I related to audio
    3.3 C&I for maintenance purposes
    3.4 SBE numbers and characters
    3.5 C&I related to simple multipoint conferences
    3.6 SBE symbols used in channel aggregation and restricted network situations
    3.7 Symbols used in the transfer of network addresses (Recommendation H.242)
4 Requirements for C&I
Appendix I � Occupancy of H.230 escape table (reached from (111) [17] of Table A.1/H.221