Question 17/I - Audiovisual services
(expanded and continuation of Question 17/I, 1985-1988)

Considering

(a) that Study Group I Question 17/I has studied the general aspects of
audiovisual services, videophone service in the ISDN and telewriting
with telephony in addition to the teleconference service, and has
defined the Recommendations for these services;

(b) that Study Group VIII has been studying system aspects of
audiographic conference (Questions 19, 26/VIII) based on the
classification of Study Group I, new coding schemes for graphics image
(Question 18/VIII) and document structure (Question 30/VIII);

(c) that studies on the general frame structure for audiovisual systems
(Question 5/XV) and system aspects for videophone and
videoconference systems (Question 4/XV) are now in progress under
Study Group XV;

(d) that studies on the network interface aspects applied to the
ISDN and wideband conding speech coding algorithms are now in
progress under Study Group XVIII;

(e) that Study Group VIII is studying Question 9/VIII on protocols for
interactive audiovisual services, which could be applicable to existing
Telematic services and future services,

the following audiovisual services are to be studied:

1. study on each service involved in audiovisual services for user-to-
user real time conversational application:

-extension and revision of Recommendations for teleconference
service, videophone service, telewriting with telephony, etc.

-definition of the use and integration of audiographic conference
service, videoconference service, general videophone service and
other multi-user audiovisual services;

2. relationship of the audiovisual services studied in this Question to
other audiovisual services and Telematic services:

- common aspects of user service definitions

-common access and configuration for intercommunication of
audiovisual services

- Quality of Service and other aspects of audiovisual service

-description of the general relationship of audiovisual service domains
such as user-to-user real time conversational, user-to- system real time
interactive and user-to-user non-real time

-service definitions and related aspects for each identified service
will
be studied as part of their own Questions;

3. liaison works with the relevant Study Groups and with the relevant
study Questions of Study Group I.