Question 12/III - Tariff principles for the international telex service (continuation of Question 13/111 studied in 1985-1988) (To be studied in close collaboration with Study Group I.) 1. Study of possible amendments and additions to the existing D-Series Recommendations relating to charging and accounting for the international telex service. 2. Study and development of charging and accounting principles for new telex services and facilities and in particular the preparation of a draft Recommendation concerning charging and accounting for interworking between telex and other services, taking into account the general principles and operational aspects developed by Study Group I.