但是由于种种原因，成熟的软交换网络商业应用还没有普遍，这就有必要探讨在现有的电信网络平台上，如何平滑的过渡的软交换网络。
But because of some reasons, there is no very good softswitch in business field, which urge us research into how we have existing telecom network transform into softswitch network.
软交换技术是一个能够提供下一代分组通信——包括语音、宽带和无线网络的平台。
Softswitch is a technique that can supply next-generation packet communications including speech, wideband and wireless networks.
它的主要目的是为了解决IP网中的信令控制，以及同软交换的通信，从而构成下一代的增值业务平台。
SIP can help constructing the next generation increment business platform through the signaling control and communication of softswitch.
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