The provisions of this scheme to with simple operation, a suitable encryption over the Internet transmission of the IP phone (including signaling, media and text messages, etc.) related business high strength encryption method -- BEEO, this scheme is suitable for signaling standard includes the SIP, MGCP and h. 323, adaptive transmission media for RTP, adaptive network structure including client/server mode and end-to-end mode, the provisions of this scheme of encryption in the network position in the fifth layer of the OSI network architecture, encryption is the content of the TCP/UDP workload, VoIP signaling structure also belongs to the encrypted content,
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