新兴电信运营商的战略选择——统一的IP核心网

在无连接的IP网上，基于SIP的VoIP系统用软件交换机提供VoIP业务，既可完成固定电话的交换传输，也可完成移动电话的交换传输，差别仅仅是接入方式不同。它不但可以提供传统电话智能网的全部功能，还可以提供传统电话智能网和互联网特征融合的新功能。对于新兴运营商而言，采用这样的系统不仅可以以价格优势、更重要的是可以以功能的优势与传统电信运营商竞争。

Strategic Choice of New Telecom Operators--Unified IP Core Network

Over the connectionless IP network, the SIP - based VoIP system provides VoIP services with software exchanges, performing both fixed and mobile telephone switching and transmission functions,only showing differ- ence at access modes. It not only provides all the IN functions of the con- ventional telephony,but also the new convergence feature of the IN func- tions of the conventional telephony with the Internet. For emerging opera- tors, the adoption of such systems with provide price advantage and, what is more important, functional advantage to compete with incumbent telecom operators.