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