We use IP videophones talk to each other by means of audio and video data stream transmitting through networks, but the volume of the data are vast, the bandwidths are limited,it is completely out of the question to transmit these kind of data in uncompressed form.

The terminal has the IP videophone function and standard PSTN telephone function at the same time.

This paper provides an overview of Video IP Phone\'s history and development, points out that these products possess the hardware design complexity,lower resolution images,more network bandwidth and higher price,etc,analyzes the significance of design and implement of a higher performance and cheaper Video IP Phone Teminal,puts forward the design scheme based on Freescale\'s i.

This paper brings up a design of the desktop video IP telephone system.

Research on Policy-based Session and Media Authorization in IP Video Phone Systems;

And thus, a TV with IP video phone function is designed.

Based on PC NSP videophone system realization;

Real-Time Conversion for Color Space in Videophone;

The Realization of H.324 Videophone Based PC;

Design of Voice Blockless Video Telephone Based on Dual Network;

The paper presents the implement of video telephone based SIP using callback functions and UDP concurrent server.

The major processing objects of video telephone and video conference are head-shoulder sequence,that is human optical characteristics.