VOIP CONFERENCING

摘要

A VoIP-based conferencing system readily handles different protocols, loa d balance media resources and deals with fail-over situations. The VOIP conf erencing system has a gateway coupled to the PSTN (Public Switched Telephone Network). A Voice Server Director (VSD) is coupled to the gateway and perfo rms the control function of the conferencing system. The VSD has a back-to-b ack user agent. The VSD controls a media server, which mixes the audio (sign als), and the media server receives the data portion of a conference call fr om the gateway. The media server is coupled to a bridge that controls an on- going conference.