Network address translation router for voice internet...

Multiplex communications – Communication techniques for information carried in plural... – Adaptive

Reexamination Certificate

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C370S352000, C370S401000

Reexamination Certificate

active

10215035

ABSTRACT:
A network address translation (NAT) router for connecting an inside network to an outside network. The inside network uses local addresses and has a plurality of voice over Internet protocol (VoIP) systems and a plurality of hosts, and the outside network uses global addresses. An Ethernet driver is connected to Ethernet drivers in the voice over Internet protocol systems by a hub. An Ethernet and Internet protocol (IP) interface module assigns predetermined physical addresses to the Ethernet drivers of the voice over Internet protocol systems. A transmission control protocol/Internet protocol (TCP/IP) module is connected to the Ethernet and Internet protocol interface module and sets a predetermined number of local Internet protocol addresses for the voice over Internet protocol systems. A network address translation module translates an inside local Internet protocol address within a voice over Internet protocol system to a global Internet protocol address.

REFERENCES:
patent: 6549886 (2003-04-01), Partalo
patent: 7068684 (2006-06-01), Suder et al.
patent: 2001/0004361 (2001-06-01), Kobayashi
patent: 2001/0030950 (2001-10-01), Chen et al.
patent: 2001/0043571 (2001-11-01), Jang et al.
patent: 2003/0076830 (2003-04-01), Asano
patent: 2003/0093563 (2003-05-01), Young et al.
patent: 2003/0233576 (2003-12-01), Maufer et al.
Bur Goode, “Voice Over Internet Protocol(VoIP),” IEEE, vol. 90, No. 9, pp. 1495-1517, Sep. 2002.

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