| 摘要 |
<p>An application server of an IP Multimedia Subsystem network for use in provisioning a service to a set of served users. The application server comprises a memory configured to store, for each of said served users, a calling party identity for each of a plurality of recently received incoming communication connection requests directed to the served user, the identities forming a connection history list ordered chronologically according to the time of the respective requests. The server further comprises a receiver for receiving from served users and/or from a gateway or gateways providing an interface between served users and the IP Multimedia Subsystem network, Session Initiation Protocol, SIP, messages each relating to a served user and containing a position within the connection history list for the served user, and a determining unit for determining, for each said message, the calling party identity at said position.</p> |
