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Application layer mobility proxy for real-time communication

By Ping-yu Hsieh and Ashutosh Dutta Ψ


By configuring some of the application layer tools such as Linux IPCHAINS, IP Masquerading, RTPtrans and IP Aliasing, we build the mobility proxy in cooperation with SIP registrar, to forward data from the correspondent hosts to the new location of the mobile hosts as the mobile keeps on changing its IP address. It not only provides continuous connectivity of both TCP/IP and RTP/UDP traffic for the mobile hosts, but also offers the flexibility to build a mobility proxy in a mobile and wireless networking environment independent of the underlying networking technology. In this paper we present some of the mechanisms involved and experiments conducted to build this mobility proxy in a laboratory environment.

Year: 2003
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