关于NGN若干问题的思考——从VoIP到NGN

Considerations on Several Issues Related with NGN——From VoIP to NGN

本文在综述了VoIP的三个发展阶段之后,分别提出了NGN业务网的十大问题、分组业务网的完备性、NGN业务网的评价体系,最后对目前已出现的分组业务网技术体系进行了评价。

Following a summary of three development phases of VoIP,this article has respectively proposed ten major issues of NGN service network, the completeness of packet service network and the evaluation system of NGN service network. In the end, it has evaluated technical systems of packet service network currently emerged.