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- IMPORT
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- CCITT D.220
- THE INTERNATIONAL
- TELEGRAPH AND TELEPHONE
- CONSULTATIVE COMMITTEE
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- GENERAL TARIFF PRINCIPLES
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- CHARGING AND ACCOUNTING IN
- INTERNATIONAL TELECOMMUNICATIONS SERVICES
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- CHARGING AND ACCOUNTING PRINCIPLES
- TO BE APPLIED TO INTERNATIONAL
- CIRCUIT-MODE DEMAND BEARER SERVICES
- PROVIDED OVER THE INTEGRATED
- SERVICES DIGITAL NETWORK (ISDN)
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- Recommendation D.220
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- IMPORT Geneva, 1991
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- FOREWORD
- telecom
- 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 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.220 was prepared by Study Group III and was approved
- under the Resolution No. 2 procedure on the 22 of March 1991.
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- ___________________
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- CCITT NOTE
- In this Recommendation, the expression SAdministrationT is used for
- conciseness to indicate both a telecommunication Administration and a recognized
- private operating agency.
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- c ITU 1991
- All 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 ITU.
- PAGE BLANCHE
- Recommendation D.220
- Recommendation D.220
- CHARGING AND ACCOUNTING PRINCIPLES TO BE APPLIED TO INTERNATIONAL
- CIRCUIT-MODE DEMAND BEARER SERVICES PROVIDED OVER
- THE INTEGRATED SERVICES DIGITAL NETWORK (ISDN)
- (Melbourne, 1988, revised 1990)
- Preamble
- This Recommendation sets out the general principles for charging and
- accounting to be applied by Administrations for the provision of international
- circuit-mode demand bearer services provided over the ISDN. These services are
- defined in the relevant CCITT Recommendations.
- 1 General principles
- In principle, there should be no charging and accounting discrimination
- between bearer services which require the same network resources and/or functions
- to provide the customer with the service requested.
- When the network resources required to provide bearer services are
- different, the collection charges and accounting rates may depend on the costs of
- those resources.
- The services covered by this Recommendation are listed in Annex A and are
- subject to the same general principles. Unique aspects of the services are also
- noted in Annex A.
- 2 Collection charges
- 2.1 Collection charges should be set in accordance with the bearer service
- requested by the customer. In the event that Administrations elect to provide a
- higher capacity connection to meet that request, the customer shall be charged on
- the basis of the connection type corresponding to the requested service.
- 2.2 The network resources necessary to support the requested services may be
- different, for example:
- 2.2.1 the basic utilization charges for a service requiring 64 kbit/s
- unrestricted may in principle be at a rate higher than those for a service
- requiring 3.1 kHz audio;
- 2.2.2 the basic utilization charges for a service requiring 3.1 kHz audio may in
- principle be higher than those for a service requiring speech only1).
- 2.3 Measurement of a call for charging purposes should in principle be based
- on duration and should commence when the information channel is open for
- communication1).
- 3 Accounting
- 3.1 Administrations should, by agreement, establish the accounting rate(s)
- applicable in a given relation.
- The accounting rate should be divided into terminal shares payable to the
- Administrations of the terminal countries and, where applicable, into transit
- shares payable to the transit Administration. These shares should be established
- in accordance with the relevant provisions of the Administrative Regulations [1]
- and the CCITT Recommendations.
- 3.2 Accounting rates should, in principle, relate to the network resources and
- functions required to provide the service requested. In exceptional cases when
- the requested facilities are not available, and a higher grade facility is
- utilized by Administrations, accounting should be based on the facility used.
- 3.3 Measurement of traffic for accounting purposes should in principle be
- based on duration and take into account other relevant CCITT Recommendations.
- However, Administrations may agree to consider specific accounting to recover the
- costs associated with short duration calls1).
- ANNEX A
- (to Recommendation D.220)
- Categories of circuit-mode bearer services
- a) Speech: no unique aspects foreseen;
- b) 3.1 kHz: no unique aspects foreseen;
- c) 64 kbit/s unrestricted: no unique aspects foreseen;
- d) 7 kHz: for further study;
- e) Alternate speech/64 kbit/s unrestricted: for further study;
- f) 384 kbit/s unrestricted: the call set up charges for this service may
- be more significant than for the other services (for further study).
- Reference
- [1] Final Acts of the World Administrative Telegraph and Telephone Conference,
- International Telecommunication Regulations, ITU, Melbourne, 1988.
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- 1) This is for futher study.
- 1) This is for futher study.
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- D.220 PAGE1
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