Design And Implementation Of Vistor’s Embeded Sysytem Based On SIP

With the development of information technology, The visitors machine as a special product in the field of security also gradually to develop in the direction of information technology, and the SIP’s visitors machine wh ich is used in inte lligent building was adapted to the dem and of The Times, the products which this theies studied com pare with the traditional’s products, in addition to the basic functions, and they have th eir own characteristics, a feature is the audio and video tr ansmission function which is based on the IMS networ k, this function can be further identification of the visitors, improve the safety of the visitors, a feature is based on the T R069 terminal management functions, all visitors should be brought into the unified m anagement platform, reduce the dif ficulty of system maintenance, the last f eature is its co st advantage than traditional products.The work of this thesis is to design and develop the prod uct around this three characteristics, the m ain work con tent can be divided into three parts, first is to determine the embedded system, using current more mature ARM Cortex A8 solutions as the system hardware, using the tailoring Linux as the operating system, so reduce the sacle of system software.The second part of the work is to study and i mplement the following key technology and function:(1) Terminal management function base d on TR069 protocol, realizing the terminal of rem ote maintenance and upgrade through the unified term inals management platform;(2) Video intercom based on SIP protocol, realizing the ter minals access totelecom IMS platform,and transmitting the video and audio through theplatform;(3) Video and audio data transm ition based on RTP protocol, realizing the videoand audio data reception,edcoding,decoding;(4) Through the system modeling and demand analysis, realizing the four m ajorbusiness functions for vistor machine, one is the system login function, one is avisitor registration function, one is a vi sitor registration cancellation function,one is a visitor information query function, and that several business functionsare built on the basis of the application, the function, after one layer to realizethese functions, to realize the whole system.Finally the work is to build a test environment, design test case, the main business function of the completed the business of the whole system function test, the test result is good.