| 摘要 |
A method and an apparatus are disclosed that enable call admission control for telecommunications terminals that use shared-access resources, without relying on an implementation at every access point to provide those resources. In particular, in accordance with the illustrative embodiment of the present invention, a first wireless terminal calls a second terminal by transmitting a traffic stream description that specifies the nature of the call to an intermediary call-handling server, such as a Session Initiation Protocol (SIP) proxy server. The SIP proxy determines from the Internet Protocol address of the calling terminal that the terminal uses a shared-access resource-in this case, a wireless shared-communications channel-and makes a request to a channel utilization manager to admit the call. Subsequently, the SIP proxy receives a message from the channel utilization manager that indicates whether the call has been admitted. |
