Rec. ITU-T D.150 (10/1992) � NEW SYSTEM FOR ACCOUNTING IN INTERNATIONAL TELEPHONY
FOREWORD
1 General considerations
    1.1 Introduction
    1.2 Explanation of some of the terms and expressions used in this Recommendation
    1.3 Basic principles of a new system for accounting in international telephony
    1.4 Procedures
    1.5 Traffic unit
2 Remuneration of the Administration of the country of destination
    2.1 Flat-rate price procedure
    2.2 Traffic-unit price procedure
    2.3 Accounting revenue division procedure
    2.4 Consideration regarding choice of accounting procedure
    2.5 Simplification of accounts and use of traffic sampling
    2.6 Estimation of lost accounting records
3 Remuneration of the Administrations of transit countries
    3.1 Flat-rate price procedure
    3.2 Traffic-unit price procedure
    3.3 Establishment of a switched-transit relation
    3.4 Calculation of the remuneration to the Administration of the country of the first transit exchange on ...
4 Remuneration of the Administration of the country of origin
5 Notes and examples
ANNEX A � Differences between collection charges and accounting rates
ANNEX B � Examples of the various procedures for remunerating Administrations
B.1 General
B.2 Case 1 � Use of the accounting revenue division procedure for all traffic
B.3 Case 2 � Use of traffic-unit and/or flat-rate price procedure for all traffic
B.4 Case 3 � Use of the accounting revenue division procedure for the direct traffic between A and B and ...
ANNEX C � Traffic measurement conversions from seizures or erlangs into conversation time for temporary ...
C.1 Conversion from seizure measurements
C.2 Conversion from erlang measurements
References