large corporation that has many locations can have a network backbone 22 that ties all of the locations together for example a network backbone 22 can make a server cluster accessible by different departments of a company that are located at different geographical locations network congestion is often taken into consideration while designing network backbones the network backbone 22 can include core routers 4 interconnecting multiple locations or large enterprise locations to a local router 10 the network backbone 22 are optimized for high bandwidth a network switch 12 links information from the local router 10 to network devices such as the multimedia mm clients 24 the local router 10 transfers data between a local area network and a wide area network choosing the most effective paths to use when sending or receiving data in this case the local network includes the mm clients 24 via a network switch 12 the queue control proxy qcp 14 acts on both network and application information in the application space this could include session quality packet metrics latency jitter packet loss bursts for non deterministic traffic requiring some priority such as video over ip the qcp 14 can communicate with applications via application signaling protocols to the originating proxies or gateways to address control of traffic in network queues the qcp 14 queries an application control authority database acad 16 for application traffic policies each application that has u201c rights u201d defined in the acad can send traffic to a given queue rights identify attributes.