Appatatus and method of processing charging data

A data user (100) able to receive data at three terminals through a telephone network (110), a packet switched network (120) and an integrated system digital network (130) receives data from a data supplier (300) using a high capacity communication processing system (200). The high capacity communication processing system (200) has a high speed switch (220), a packet system processor (230) for incoming data and a sub-system (240) for accessing the operational network. Billing information is obtained by incorporating an accessing system into the customer networks (210) which processes a customer call and billing protocol and also a local system managing and operating unit (250) which manages product and billing data within the main system (200).