| 摘要 |
A first set of credentials from a client terminal 101 is received at a first server component 103. A user of the client terminal is authenticated on the basis of the first set of credentials using the first server component. First server component authentication status is maintained for the user on the basis of the authentication conducted using the first server component. Access is provided to service data 105 from the first server component dependent on the first server component authentication status. A second set of credentials from the client terminal is received at a second server component 107. A correspondence between at least the second set of credentials and the first server component authentication status for the user is identified. One or more notifications 109 relating to service events for the service are transmitted from the second server component dependent on at least the first server component authentication status for the user. The first server component may be a web server component and the second server component may be a notification or polling server component. A proxy server component may also be used (713, Figure 7). The arrangement described provides one server component that handles all of the authentication and session management on behalf of the two or more server components to reduce the burden on (or streamline) the polling/notification server component. The system may be an Internet Protocol Multimedia Subsystem (IMS) providing access to telephony-related service data (billing, configuration, service upgrades etc.) and providing call/voice-mail notifications etc.
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