1、CCITT RECMN*D.240 91 = 4862571 0560722 2 INTERNATIONAL TELECOMMUN CATION UN ION CCITT THE INTERNATIONAL TELEGRAPH AND TELEPHONE CONSULTATIVE COMMITTEE GENERAL TARIFF PRINCIPLES CHARGING AND ACCOUNTING IN INTERNATIONAL TELECOMMUNICATIONS SERVICES D.240 CHARGING AND ACCOUNTING PRINCIPLES FOR TELESERVI
2、CES SUPPORTED BY THE ISDN Recommendation D.240 Geneva, 1991 INTERNATIONAL TELECOMMUNICATION UNION CCITT THE INTERNATIONAL TELEGRAPH AND TELEPHONE CONSULTATIVE COMMITTEE GENERAL TARIFF PRINCIPLES CHARGING AND ACCOUNTING IN INTERNATIONAL TELECOMMUNICATIONS SERVICES D.240 CHARGING AND ACCOUNTING PRINCI
3、PLES FOR TELESERVICES SUPPORTED BY THE ISDN Recommendation D.240 Geneva, 1991 CCITT RECMN*D=240 93 m 4862.593 0.560724 b m FOREWORD The CCITT (the International Telegraph and Telephone Consultative Committee) is a permanent organ of the Internationai Telecommunication Union (ITU). CCITT is responsib
4、le for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The Plenary Assembly of CCIT which meets every four years, establishes the topics for study and approves Recommendations prepared by its
5、 Study Groups. The approval of Recommendations by the members of CCITT between Plenary Assemblies is covered by the procedure laid down in CCITT Resolution No. 2 (Melbourne, 1988). Recommendation D.240 was prepared by Study Group III and was approved under the Resolution No. 2 procedure on the 22 of
6、 March 1991. CCIT NOTE In this Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication Administration and a recognized private operating agency. O ITU 1991 All rights reserved. No part of this publication may be reproduced or utilized in any form
7、or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the ITU. CCITT RECMN*D*240 91 4862571 05b0725 8 Recommendation D.240 CHARGING AND ACCOUNTING PRINCIPLES FOR TELESERVICES SUPPORTED BY THE ISDN Preamble This Recommendation sets out the
8、 charging and accounting principles for teleservices provided over the ISDN. It covers the teleservices currently contained in the following sections of Recommendation 1.241: Q 1 for telephony, O 2 for teletex, O 3 for telefax 4,0 4 for mixed mode, Q 5 for videotex and Q 6 for telex. The CCITT, cons
9、idering (a) that general principles for charging and accounting of international telecommunication services provided over the ISDN are contained in Recommendation D.210 which states that the charging and accounting principles should not be discriminatory, Le., not depend on the type of information t
10、ransmitted except where the costs incurred by the Administrations differ; (b) that teleservices have the same lower layer attributes as the bearer services supporting them; (c) that general principles for charging and accounting principles to be applied for international circuit-mode demand bearer s
11、ervices are contained in Recommendation D.220, recommends that 1 Charging principles 1.1 them as shown in Table 1D.240. The charging principles for teleservices should be based on those developed for the bearer service supporting TABLE 1p.240 Telephony Teletex Telefax 4 Mixed mode Videotex Telex Ass
12、ociated bearer service 3.1 kHz audio or 64 kbit/s unrestricted 64 kbit/s unrestricted, or packet (see Note 1) 64 kbit/s unrestricted, or packet (see Note 1) 64 kbitls unrestricted, or packet (see Note 1) 64 kbit/s unrestricted, (see Note 2) 64 kbitls unrestricted (see Note 2) Note 1 - Tariff princip
13、les for packet mode bearer service have yet to be developed. Nofe 2 - As currently defined in the Sections of Recommendation 1.241 described in the preamble. Recommendation D.240 1 i CCITT RECMNUD-240 91 48b2591 0560726 T 1.2 functions associated with the supporting bearer service. Although the leve
14、l of the charge is a national matter, it may vary in accordance with the higher layer 2 Accounting principle 2.1 service to which it relates as shown in Table 1D.240. particular teleservice. Subject to bilateral agreement, the accounting rate for a teleservice should be based on the rate for the bearer Note - This principle does not cover the case where dissimilar bearer connection types are used to provide a 2 Recommendation D.240
