SUBSCRIPTION AND ADVICE OF CHARGE CONTROL

摘要

A method of providing service authorization comprises sending a message from a redirect server to a user terminal including an authorization token. Further, the method comprises detecting and removing the authorization token by a network gateway node from the message before forwarding the message to the user terminal. The method further comprises initiating a service authorization request by the network gateway node towards an online charging system, said request including the authorization token. The redirect server may be a top-up server.