1 Introduction
2
Normative references
3
Definitions
4
Terminology
5
Description
5.1 General description
5.2 Basic functionalities
5.3 Service categories
5.4 Possible applications
5.5 Optional features
6
Procedures
6.1 Normal procedures
7
Network aspects
8
Terminal aspects
9
Quality of service
9.1 Picture quality
9.2 Audio quality
9.3 Overall delay
10 Interworking/intercommunication
10.1 Intercommunication with telephony
10.2 Intercommunication with mobile videotelephony
10.3 Intercommunication with ISDN videotelephony
Annex A – Attributes and values
A.1 Low layer attributes
A.2 Access attributes
A.3 High layer attributes
A.4 General attributes