| With the computer technology and wireless communications technology development, embedded systems have penetrated into various fields, which have brought a major impact to the society. The wireless communication technology in embedded products have been widely used in recent years, newly emerging WIFI communication protocols, in a variety of communication devices to be vigorously promoted. As the improvement in the quality of people's lives, people needs more and more voice, video and other business, the traditional telephone network transformation to IP data network has become a trend. SIP protocol, as the next generation of network communication control protocol, with its obvious advantages has had a major impact to the VOIP.Through studying and researching the theories of the SIP protocol, IP phones and wireless communication technology, proposed a SIP-based voice gateway for embedded design and implementation of the program, this voice gateway integrated WIFI communications technology, SIP protocol, embedded technologies, and to verify the feasibility of the program, and its audio communications, security issues are discussed. |
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