| 摘要 |
<p>The present invention deals with a method performed by a communication device(100) for communicating in a communication system comprising a home communication network (110) and a number of visiting communication networks (120, 130), the device subscribing to the home communication network with a home subscriber ID. A subscription profile is stored on the device, the subscription profile comprising the home subscriber ID, access credentials and traffic data of the home communication network. The method comprises receiving (302), from a network node (140), a number of local subscriber IDs, individual of the number of local subscriber IDs being adapted for communication in individual of the number of visiting communication networks and determining (304) to register with a first visiting communication network (120) of the number of visiting communication networks. The method further comprises selecting (308) a first local subscriber ID of the number of stored local subscriber IDs, which first local subscriber ID is adapted for communication in the first visiting communication network and sending (310) a registration request comprising the selected first local subscriber ID to the first visiting communication network (120). The method further comprises receiving (312) a registration response, and sending (314) a signalling request to the determined first visiting communication network, the signalling request comprising the first local subscriber ID and traffic data of the home communication network (110).</p> |
