초록 ▼

A method and apparatus enables selection a communication system when a user of a mobile unit is away from a home system to which it is registered. According to one novel aspect, the visited communication system broadcasts (402) a list of standardized type services including tariff information, which

A method and apparatus enables selection a communication system when a user of a mobile unit is away from a home system to which it is registered. According to one novel aspect, the visited communication system broadcasts (402) a list of standardized type services including tariff information, which is used by the mobile unit to select a system. According to another novel aspect, the mobile initiates an outgoing call of a non-standardised type service by accessing (502) a candidate system and informing it of the location of the home network and desired service identifier. The candidate system obtains (504) the service information on this service from the home network, and then provides (546) a quotation for a required service. Also, a communication system according to the present invention minimises incoming call costs to the user wherein the home system polls (606) the communication systems within range of the mobile unit to select the best system to provide service.

대표청구항 ▼

[ We claim:] [1.] A method of transferring an incoming call made to a mobile unit associated with a home communication system to said mobile unit located in a visited communication system, said method comprising the steps off:at the home communication system, receiving an incoming call to said mobil

[ We claim:] [1.] A method of transferring an incoming call made to a mobile unit associated with a home communication system to said mobile unit located in a visited communication system, said method comprising the steps off:at the home communication system, receiving an incoming call to said mobile unit;polling a plurality of communication systems accessible to said mobile unit and providing a service description to determine offered tariffs;selecting one of said plurality of communication systems according to said offered tariffs; andinstructing said mobile unit to receive said incoming call on said one selected communication system.