Question 13/I - Subscriber facsimile service
(revised, previously Question 11/I, 1985-1988)

Considering

(a) that Group 3 facsimile terminals are used extensively throughout the
world and the use of these terminals will continue to expand rapidly;

(b) that the technical Recommendations for Group 4 terminals have
been defined;

(c) that administrations are introducing the Integrated Services
Digital Network (ISDN);

(d) that future applications may be required as user requirements
evolve,

it is proposed that the following points should be studied:
1. do the existing Recommendations need to be amended to cover
different types of business correspondence;

2. are there user requirements to be able to access information
retrieval systems, e.g. weather maps using an interactive mode and, if
so, what are the associated service requirements;

3. the impact of A5/A6 Group 3 facsimile terminals;

4. interworking between the Telefax services and other services;

5. operation of the Telefax services over different networks;

6. what amendments are required to the existing Recommendations to
take into account changes in technology?

7. mixed mode of operation;

8. Quality of Service:

- how should the Quality of Service be defined;

- what criteria should be used to define the Quality of Service;

- how should the Quality of Service be monitored and controlled?