Patent ID: 8856350

Claim:
A computer-implemented method for connecting call admission control (CAC) servers and synchronizing data between the CAC servers, the method comprising performing computer-implemented operations for: establishing a first network connection between each of the CAC servers grouped together in a first pool of CAC servers according to a geographic location; establishing exactly one second network connection from a CAC server in the first pool of CAC servers to a CAC server in a second pool of CAC servers grouped together according to a geographic location; receiving session data at one of the CAC servers in the first pool of CAC servers; performing intra-synchronization between the first pool of CAC servers by synchronizing the received session data from the CAC server that received the session data to each of the other CAC servers in the first pool of CAC servers by way of the first network connection; performing inter-synchronization between the first pool of CAC servers and the second pool of CAC servers by receiving a status update at the one of the CAC servers in the first pool of CAC servers from the CAC server in the second pool of CAC servers by way of the second network connection, wherein the status update comprises data identifying a network link, a media type, and a current utilization of the network link; and synchronizing the status update received at the one of the CAC servers in the first pool of CAC servers to other CAC servers in the first pool of CAC servers.