Question 6/III - General tariff and accounting principles applicable to
data communication on public data networks (continuation of Question
6/III studied in 1985-1988)

(To be studied in liaison with Study Groups I and VII.)

Reasons for the study

A continuous review of the provisions of Recommendations D.10, D.13 and
D.30 is required in the light of experience and new developments in
telecommunications.

For the study of this Questions, attention should be given to the
following items:

1. An ongoing review of the general tariff principles which should be
applied to public data communication services provided on public data
networks.

2. Should different tariff principles apply depending on the type of
data communication service utilized, class of user of the service and
the additional facilities involved?

3. The development of accounting and tariff principles for message
handling services and directory services.

4. The effect of text communication services on the charging systems for
public data network services.

5. Tariff principles associated with reverse charging (packet and
circuit).

6. Questions 21/III, 22/III and 23/III concern charging and accounting
principles to be applied to the services offered by an integrated
services digital network (ISDN) to the non-voice services provided by
interworking between the ISDN and existing public networks and to
permanent and reserved services within the ISDN.

Note - This Question is to be studied by Study Group III in association
with Study Group VII which will be responsible, in particular, for
supplying the necessary information on the technical characteristics of
the networks envisaged. To that end, close cooperation should be sought
between Study Group III and Study Group VII during the whole study
period.