The Design And Implementation Of A Network Intercom System Based On SIP

With the development and popularity of intelligent community, the independent and individual system in traditional community starts to show its disadvantage. Peoplehope to find a new communityintercom system,which can complete the function of traditional community intercom system,as well as some new function such as property information releasing,video surveillance,smart home control and so on. In thisthesis, a network video intercom system based on SIP has been designed and implemented.At first, a open source software named Csipsimple was used as the foundation of my system.Then,this topicachieved video intercom between two terminals by modify Csipsimple. In order to achieve access control and docking with other systems, the function of control signal transmission was added to the system. Then both stun an turn server were used toachieveNAT traversal. On this basis, the communication between two terminals on Internet was achieved.At last, anew and unique way toachievehuman-computer interactionwas designed and implemented as the highlights of this system.