| 摘要 |
<p>A system (1) allows a client (3) to enquire about the current network status of a user terminal (5), and it allows a client to register the fact that the client is waiting for a network status change notification for a particular user terminal (5). It interfaces with a number of the external network status providers (4) according to a schedule, which it automatically generates, and combines the information from these providers into a single network status message returned to the requesting client (3). The system (1) allows the client (3) to specify the set of criteria that a network status response should adhere to. It also allows the client (3) to specify the set of network status attributes that should be returned by the system (1) in the network status response. The system (1) has a network status enquiring mode in which it implements a process of obtaining the current network status of a user terminal by requesting information from one or more providers (3) according to a schedule, and a network status change notification mode in which it is notified about a network status change of a user terminal and processes these notifications.</p> |
