| 摘要 |
<p>Maintaining a list of communication session servers which are currently in an active state and which are currently in a failed state, and which are currently responsible for providing communication services to which subscribers. Receiving a query in relation to a communication session involving a subscriber. In response to the list indicating that a communication session server which is currently responsible for providing communication services to the subscriber currently has an active state, responding to the query with an identifier for the communication session server. In response to the list indicating that the communication session server currently has a failed state, conducting a responsibility transfer operation to transfer responsibility for providing communication services to the subscriber from the communication session server to a different communication session server and responding to the query with an identifier for the different communication session server.</p> |
