Importance

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Abstract

A method for determining deteriorations in the quality of a mobile or fixed telephony network on a day D (or at any other frequency, for example hour or minute) by implementing one or more items of special equipment in the network, wherein the method implements at least one measurement means and at least one calculation means, characterised in that the method including at least: a stage for selecting (S1) the Usage Messages (MU) (1) corresponding to each call of the day D (2a) or at any other frequency (for example hour or minute); a stage for characterising (S2) groups of UMs corresponding to the callbacks from among the UMs of the calls selected (4); a stage for filtering (S3a) the UMs in order to separate the UMs called 'incoming--outgoing' (5), the UMs called 'return incoming' (6) and the UMs called 'return outgoing' (7); a stage for calculating at least one indicator (S7) by grouping the UMs (15) as a function of several common data fields; a stage for calculating the callback rates for an indicator; a stage for intervening to restore or improve the quality of the calls in the section of the network defined by at least one field code common to several UMs.

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