This tutorial focuses on operational aspects of the EGK (Extended Gatekeeper), EPX (Extended Proxy Server) and IWF (Interworking Function) components of the A5020SX Serving Node.

• 该指南集中于A5020SX服务节点的 EGK（扩展的网关守卫），EPX (扩展的代理服务器)和IWF (交互功能)组件的运行情况。