基于软交换的网络演进工作是目前N G N发展的重要内容之一,各运营商积极开展软交换技术、业务试验和商用试验,并提出了演进计划,而有关IMS和软交换的关系问题正成为业界争论的焦点。IMS与网络演进的关系尽管IMS可能成为N G N的重要组成部分,但是这种模式并不能够很容易的迅速进 The evolution of network based on softswitch is one of the important contents of NGN development at present. Each operator actively carries out softswitch technology, business experiment and commercial test, and proposes the evolution plan. The relationship between IMS and softswitch is becoming the industry The focus of the debate. The Relationship Between IMS and Network Evolution Although IMS may be an important part of N G N, this model can not be easily and rapidly evolved