Importance

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Abstract

An Internet phone protocol including a physical hierarchy for providing a mechanic and functional units for connecting, maintaining and releasing between linking media; a device driver hierarchy for defining driving characteristics of each electric and mechanic unit of the physical hierarchy; a real time operating system (RTOS) programming hierarchy for controlling an overall system; a user datagram protocol (UDP)/Internet protocol (IP) hierarchy for defining characteristics for processing a packet stream in packet change; an interface hierarchy for receiving a user's intention to a system; a voice/real-time transport protocol (VOICE/RTP) hierarchy for linking a voice channel between Internet phones; and an independent multimedia office communication system protocol (referred to as MOCS protocol hereinafter) hierarchy for rendering Internet phones to store in exchange status information to each other for independent and direct linking, by which one Internet phone indenpendently and directly transfers its own status information to all of the other Internet phones connected to the LAN, so that it can be directly linked to a desired Internet phone without a call server.

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First Claim