A method and corresponding device for determining a data connection profile for a data connection (15) between one of a plurality of end-user devices (14, 16, 18) and an aggregation transceiver device (24, 34), the data connection belonging to one of a plurality of predetermined categories, each category being associated with one of a plurality of service providing entities (62, 64, 66), the method comprising receiving performance data indicative of the performance of a data connection; receiving an entity identifier indicative of one of said plurality of service providing entities, and determining in dependence thereon the category to which the data connection belongs; and determining a data connection profile for the data connection in dependence on the performance data and on the category so-determined, the data connection profile specifying a set of values for one or more parameters associated with the data connection.