A study on call admission control techniques for multimedia communication over IP networks

摘要

This paper proposes a new call admission control technique using a H.323 proxy server that is newly introduced. Internet protocol is for connection-less communication. So when the connection-oriented communication, typically multimedia communication, is provided in the IP network, it is important to guarantee the bandwidth for it. Call admission control (CAC) is necessarily to guarantee quality of service by determining to assign the bandwidth for multimedia communication. H.323 proxy server provides the effective CAC by intermediating the terminal capability negotiation between terminals.