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In order to use the electricity resources even more intelligent, efficient and safer, the concept of intelligent home electricity system was presented. Based on the analysis of the requirement of the intelligent home electricity system, the Home Gateway and SPO (Smart Power Outlet) were designed to integrate the isolated WSN (Wireless Sensor Network) and the Internet to achieve communication between different networks. The communication model based on SIP/ZigBee which is the combination of the core protocol of NGN (Next Generation Networks) and the technical characteristics of the main communication technology of the WSN was created. SIP extension and two kinds of control algorithms were put forword. The selection of the communication model based on SIP and ZigBee is the first step towards an intelligent home residence.