Rec. ITU-T H.320 (03/1993) – NARROW-BAND VISUAL TELEPHONE SYSTEMS AND TERMINAL EQUIPMENT
FOREWORD
CONTENTS
1 Scope
2 Definitions
3 System description
    3.1 Block diagram and identification of elements
    3.2 Signals
    3.3 Bit rate options and infrastructure
    3.4 Call control arrangements
    3.5 Optional enhancements
4 Terminal requirements
    4.1 Environments
    4.2 Audio and video arrangements
    4.3 Delay compensation in the audio path
    4.4 Control and indications (C&I)
    4.5 Multipoint operation
5 Intercommunications
    5.1 Intercommunication between different visual telephone terminal types
    5.2 Intercommunication with telephony
    5.3 Intercommunication with other audiovisual terminals
6 Maintenance
7 Human factor aspects
    7.1 Physical section
    7.2 Logical section