SmartC uses new transmission system and a large number of servers. Comparing with AnTone, the performance of SmartC is much better than that of AnTone in terms of connection rate and transmission speed. SmartC improves the communication problem in the complex network environment. It solves dynamic IP and no public IP problems effectively under the environments of ADSL, PPPoE and LAN. Comparing DDNS, SmartC do not need to apply for dynamic domain name, do port mapping and run DNS client. Remote view can be run based on a SmartC code, which can be gotten at host-end software. SmartC uses CDN (Content Delivery Network) technology in terms of servers, which is a leading technology used in many web portals. The servers of SmartC are located at the key nodes of network operators in order to get perfect bandwidth. The CDN technology is very useful in the application of SmartC.