Patent ID: 8391147

Claim:
An Internet protocol (IP) converged system comprising: an application level gateway (ALG) module configured to acquire dynamically changing real-time transport protocol (RTP) IP or port information of a packet by parsing a session initiation protocol (SIP) message, and to transmit the RTP IP or port information to a policer module; and the policer module configured to set IP or port information, which provides a real-time data service, by referring to the information from the ALG module, and to set a packet processing condition for a non-real-time data service and a packet processing condition for the real-time data service, the policer module comprising: a dropper module configured to update, when the RTP IP or port information is received, a packet processing policy table based on the received information, the packet processing policy table configured to store the packet processing condition for the non-real-time data service and the packet processing condition for the real-time data service, the dropper module further configured to apply the packet processing condition for the non-real-time data service and the packet processing condition for the real-time data service; and a packet processing module configured to drop or transmit the packet by referring to the packet processing policy table.