A processing a device (D), for a network equipment element (RP) of a communication network equipped with an accounting and billing management module, includes processing means (MT) which are tasked, firstly, to determine, from values representing selected local parameters of their equipment element (RP) and/or of selected traffic streams received by this equipment element (RP), associated with the identifier of a customer in the network, usage data concerning the resources of the network corresponding to said customer identifier, and secondly, to transmit these usage data, and the identifier associated with them, to the accounting and billing management module for a possible billing of the customer designated by this identifier.