Patent ID: 8542603

Claim:
A data communication system, comprising a network provided with a control server for managing network resources, a delivery server for delivering multimedia content to one or more UE (user equipment) devices, and a Resource and Admission Control Server, RACS, characterized in that: the control server is arranged to pass a Quality of Service (QoS) network session ID to the delivery server, said QoS network session ID being returned from the RACS in response to a resource reservation request from the control server for a Content on Demand (CoD) session between the delivery server and the UE device; the delivery server is arranged to keep track of the QoS network session ID independently of the control server, such that once the QoS network session ID has been passed to the delivery server, the control server is stateless with regard to the QoS network session, in which the delivery server is adapted to pass the QoS network session ID back to the control server upon completion of the CoD session; and the control server adapted to instruct the RACS to terminate the QoS network session upon receipt of the QoS network session ID from the delivery server.