VoIP voice over IP application is more and more popular, common applications include: test model test VoIP gateway, VoIP PBX, gateway controller, proxy server, media gateway controller, between soft switch and other network gateway and WAN equipment, VoIP conference telephone test, special research in this paper, the voice over IP (VoIP) test model, analyzed the VoIP important characteristic parameters of test model, and based on VoIP voice signaling flow and flow separation in data flow and processing, and related technologies of VoIP test model hardware and software implementation explains,
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