Through the in-depth analysis of SIP conference mixing model and tightly coupled conference framework model provided by IETF, this paper bring forward a SIP conference model suitable for NGN network.

• 通过对该模型的进一步改进，本文提出了一种适合于NGN网络，构建多媒体会议系统的模型：即实现会议控制、媒体混合和用户交互三种功能模块分离的模型。