Softswitch is the network evolution and next

代码说明：

软交换是网络演进以及下一代分组网络的核心设备之一，它独立于传送网络，主要完成呼叫控制、资源分配、协议处理、路由、认证、计费等主要功能，同时可以向用户提供现有电路交换机所能提供的所有业务，并向第三方提供可编程能力。-Softswitch is the network evolution and next-generation packet networks, one of the core equipment, it independent of the transmission network, mainly to complete call control, resource allocation, protocol processing, routing, authentication, billing and other major features, as well as to provide users with existing circuit switches can be provided for all operations to a third party to provide programmability.