ITU-T REC. H.120 CODECS FOR VIDEOCONFERENCING USING PRIMARY DIGITAL GROUP TRANSMISSION
Introduction
1 A codec for 625-lines, 50 fields/s and 2048 kbit/s transmission for intra-regional use and capable of interworki...
    1.1 Scope
    1.2 Brief specification
    1.3 Video interface
    1.4 Source coder
    1.5 Video multiplex coding
    1.6 Transmission coding
    1.7 Error correction
2 Codecs not requiring separate television standards conversion when used on interregional connections
    2.1 Introduction
    2.2 Brief specification
    2.3 Video interface
    2.4 Source coder
    2.5 Video multiplex coding
    2.6 Transmission coding
3 A codec for 525-lines, 60 fields/s and 1544 kbit/s transmission for intra-regional use
    3.1 Introduction
    3.2 Outline of codec
    3.3 Brief specification
    3.4 Video interface
    3.5 Pre- and post-processing
    3.6 Source coding
    3.7 Audio coding
    3.8 Transmission coding
ANNEX A
    A.1 Introduction
    A.2 Graphics codec for videoconferencing graphics
    A.3 Graphics codec for videoconferencing-graphics - Mode 2
ANNEX B
ANNEX C
    C.1 Introduction
    C.2 Facilities
    C.3 Coding
    C.4 Transmission and synchronization
    C.5 Decoder
ANNEX D
ANNEX E
    E.1 Configuration
    E.2 Basic filter characteristics
    E.3 Advanced filter characteristics
ANNEX F
ANNEX G
APPENDIX I
References