Tariff determination in mobile telecommunication networks

摘要

A method of determining a total call tariff in respect of a call from a Mobile Station currently registered with a foreign network. A total call tariff request is sent from a charging function (7) of the foreign network (2) to a rating node (8) of the mobile telephone subscriber's home network (1), the message including a call tariff portion of the foreign network (2). At the rating node (8), the total call tariff is determined by applying a multiplying factor to the foreign network's tariff portion. The determined total call tariff is then sent to the charging function (7) of the foreign network (2).