1、 CCITT RECVN*D*ZSO 91 = 4862593 0560882 2 INTERNATIONAL TELECOMMUNICATION UNION CCITT THE INTERNATIONAL TELEGRAPH AND TELEPHONE CONS U LTAT I V E COMMITTEE GENERAL TARIFF PRINCIPLES CHARGING AND ACCOUNTING IN INTERNATIONAL TELECOMMUNICATIONS SERVICES D.250 GENERAL CHARGING AND ACCOUNTING PROVIDED BY
2、 INTERWORKING BETWEEN PRINCIPLES FOR NON=VOICE SERVICES THE ISDN AND EXISTING PUBLIC DATA NETWORKS Recommendation 0.250 Geneva, 1991 CCITT RECMN*D*250 71 48b2571 0.560883 4 INTERNATIONAL TELECOMMUNICATION UNION CCITT THE INTERNATIONAL TELEGRAPH AND TELEPHONE CONSULTATIVE COMMITTEE GENERAL TARIFF PRI
3、NCIPLES CHARGING AND ACCOUNTING IN INTERNATIONAL TELECOMMUNICATIONS SERVICES 0.250 _ GENERAL CHARGING AND ACCOUNTING PROVIDED BY INTERWORKING BETWEEN THE ISDN AND EXISTING PUBLIC DATA NETWORKS PRINCIPLES FOR NON=VOICE SERVICES Recommendation D.250 I Geneva, 1991 CCITT RECMN*D-250 91 m 48b2591 056088
4、4 b m FOREWORD The CCITT (the International Telegraph and Telephone Consultative Committee) is a permanent organ of the International Telecommunication Union (ITU). CCITT is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standard
5、izing telecommunications on a worldwide basis. The Plenary Assembly of CCITT which meets every four years, establishes the topics for study and approves Recommendations prepared by its Study Groups. The approvd of Recommendations by the members of CCIT between Plenary Assemblies is covered by the pr
6、ocedure laid down in CCITT Resolution No. 2 (Melbourne, 1988). Recommendation D.250 was prepared by Study Group III and was approved under the Resolution No. 2 procedure on the 15 of July 1991. CCIT NOTE In this Recommendation, the expression “Administration” is used for conciseness to indicate both
7、 a telecommunication Administration and a recognized private operating agency. O IT 1991 Ail rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the
8、ITU. CCITT RECMN*D-250 91 48b2591 0.560885 8 W Recommendation D.250 GENERAL CHARGING AND ACCOUNTING PRINCIPLES FOR NON- VOICE SERVICES PROVIDED BY INTERWORKING BETWEEN THE ISDN AND ExEI“IN PUBLIC DATA NETWORKS (Melbourne, 1988) The CCITT, eo mide ring (a) that, during the transition period, it is es
9、sential that Administrations provide interworking between existing public data networks and the ISDN in order to continue providing users with non-voice services; (b) that, it is desirable to adopt general charging and accounting principles for these services when their provision needs interworking
10、between ISDN and existing public data networks; (c) that, in principle, the interworking between these networks should take place in the ISDN country or in the country of origin (if ISDN is available in both terminal countries); (d) that, in principle, the cost of interworking between the ISDN and e
11、xisting networks is one element in the development of the ISDN; (e) that customers may elect to subscribe to direct access to interworking arrangements to achieve functional benefits; (0 the relevant D-Series Recommendations, recommends 1 General principles The interworking costs inherent in the ISD
12、N should not be passed on in the form of higher collection charges to the customers of the existing networks. 2 Interworking in the country of origin 2.1 Charging principles 2.1.1 provided. The charges applied should be appropriate to the senk requested with ut regard to the ir erworking 2.1.2 reque
13、st. The form of these charges is for further study. Additional charges may be applied for access to interworking, when such access is provided at the customers 2.2 Accounting principles The level and division of the accounting rate should be based on those normally applied for the international netw
14、ork used. Recommendation D.250 1 CCITT RECMN*D*250 91 m 48b2591 0560886 T m 3 Interworking in the country of destination 3.1 Charging principles 3.1.1 provided. 3.1.2 it does so under the provisions of its own national tariffs. The charges applied should be appropriate to the service requested witho
15、ut regard to the interworking If the destination Administration seeks compensation for the interworking functions, it is recommended that 3.2 Accounting principles 3.2.1 international network used and there should be no additional accounting for the interworking functions. 3.2.2 In principle, the le
16、vel and division of the accounting rate should be based on those normally applied to the If by bilateral agreement additional accounting is agreed, an accounting surcharge may be appropriate. 4 Interworking in a transit country 4.1 Charging principles provided. The charges applied should be appropri
17、ate to the service requested without regard to the interworking 4.2 Accounting principles 4.2.1 As accounting for transit interworking is very complex, this method of interworking is not recommended. 4.2.2 Interworking provided in a transit country implies dissimilar networks in the two terminai countries. These networks may have radically different accounting rates and the determination of the appropriate accounting arrangement (including the remuneration for the transit Administration) is for further study. 2 Recommendation D.250
