Research Of VoWLAN Based On SIP Protocol And Realization Of Redirect Proxy

Wireless Local Area Network (WLAN) is developed more and more deeply, and is growing up recently, The WLAN products are applied to public location, such as campus, company, airdrome, coffee house, etc, being provided high speed wireless Internet access. Voice integrated with WLAN offers good application for WLAN, that will out of question accelerate the evolution of WLAN.Research of VoWLAN based on sip protocol and realization of redirect proxy is introduced in this paper. First, I introduce the actuality and foreground of VoWLAN system in inland and overseas, SIP protocol in detail, and OSIP inn which is open source and based on SIP. I have known that the way of realizing the SIP protocol , and cut the OSIP inn to suitable size. Finally I discuss particularly the development and design of VoWLAN system based on embeded operation system, that establish the groundwork for redirect proxy about the theory and technique.In the end, I bring forward some opinion and prospect about what need more research in VoWLAN area.