继VOIP技术从市场火爆到逐渐走向冷清之后,电信领域又迎来了软交换技术的讨论热点。目前,国内主要运营商都在开展以软交换为核心下一代网络测试,虽然大家都对NGN抱有高涨的热情和美好的期望,但我们又不得不面对一个并不理想的市场和技术环境。从技术上讲,软交换系统的多协议支持和转换问题,同一协议不同厂商间的互通问题,IP公网上的QoS有效保证问题,等等等等,这些都是令人极为头痛的事情。从市场需求看,NGN建设的初期也只是提供话音业务,这对于使用者而言似乎并没有形成及其诱人的优势,由于市场结构已经形成,运营商也不会用软交换去取代传统交换机。虽然软交换平台可以提供更为丰富的应用,但其实际市场前景如何也是很难预料的, Following VOIP technology from the market to gradually deserted after the hot, the field of telecommunications ushered in the softswitch hot discussion. At present, all the major domestic carriers are testing the next-generation network with softswitch at the core. Although we all have high hopes and enthusiasm for NGN, we have to face an unsatisfactory market and technological environment. Technically speaking, the multi-protocol support and conversion of the softswitch system, the interoperability between different vendors in the same protocol, the QoS guarantee on the IP public network, and so on are extremely troublesome. In terms of market demand, the initial stage of NGN construction only provides voice services. This does not seem to be attractive and attractive to users. As the market structure has been formed, operators will not use softswitch to replace the traditional switchboard . Although softswitch platform can provide richer applications, but its actual market prospects are also difficult to predict,