CONTENTS

�1���� Introduction
�2���� Scope
�3���� References
�4���� Only-path circuit group
������� 4.1���� No significant congestion
������� 4.2���� Significant congestion
�5���� High-usage/final circuit group arrangement
������� 5.1���� High-usage group with no significant congestion on the final group
������� 5.2���� High-usage group with significant congestion on the final group
�6���� Origin-destination equivalent traffic offered
������� 6.1���� Determination of origin-destination traffic offered when origin-destination traffic measurements on the totality of call attempts are available
������� 6.2���� Determination of origin-destination traffic offered when origin-destination traffic measurements only on a sampling basis are available
������� 6.3���� Determination of origin-destination traffic offered when only circuit-group based measurements of traffic intensity are available
�7���� History
�8���� Bibliography
Annex A � A simplified model for the formula presented in 4.2
Annex B � Equivalent traffic offered
Annex C � Methods for determination of origin-destination traffic offered when only the measurements of traffic intensity on circuit group basis are available
������� C.1�� ��Notation, derivation, and solution of Formula 6-1 in 6.3
������� C.2���� The pseudo-inverse
������� C.3���� The iterative algorithm
Bibliography
Annex D � Examples of application of the methods described in Annex C
������� D.1���� Example 1
������� D.2� ���Example 2
Annex E � A sample performance evaluation of the pseudo-inverse and of the iterative algorithm