Patent ID: 7010296

Claim:
A method of registering a service whereby a mobile-communication terminal of a given communication-service provider roaming in a network of a foreign communication-service provider registers a service, said method comprising the steps of: sending a provider identifier of the foreign communication-service provider from the network to the mobile-communication terminal; storing the provider identifier in the mobile-communication terminal; providing a service-code-correspondence table in the mobile-communication terminal, the table showing correspondences of service codes between a plurality of communication-service providers including the given communication-service provider and the foreign communication-service provider, the service codes being used by users to request registration of one or more of a plurality of services provided by each one of the plurality of communication-service providers, the correspondence table containing an entry of service codes corresponding to each of the services as a separate entry for each of the communication-service providers in such a manner that each of the service codes of one communication-service provider belongs to a corresponding one of the services, and is paired with a corresponding one of the service codes of another communication-service provider; identifying a service code of the foreign communication-service provider corresponding to a service code of the given communication-service provider by referring to the table and the provider identifier in response to the service code of the given communication-service provider entered by a user in the mobile-communication terminal, the service code of the given communication-service provider indicating a user request for registration of a corresponding type of service; and sending the service code of the foreign communication-service provider from the mobile-communication terminal to the network.