Abstract: A network audio/video communication system and a method thereof, which is used to ensure data security of a audio/video communication conducted through a network by verifying the user ID codes of a sending party and a receiving party and locking-in of the communication between the two parties. The method is realized through the following steps: activating the audio/video communication session; verifying the user ID codes of the sending party and the receiving party; determining the authorization level of the receiving party by the sending party, based on the user ID code of the receiving party; locking-in the communication connection between the sending party and the receiving party, and activating the communication connection between the sending party and the receiving party.

Abstract: A netphone and a communication method therefor are provided. The netphone comprises a main central processing unit, a video output module, an audio receiver, an audio output module, a ring generator, a command processing module, an input interface, a video capture module, a hang-up detection module, a storage module, a transceiver, and a network interface. The main central processing unit further comprises a multiplexer/demultiplexer, a video processing module, an audio processing module, a communication control module, and a system control module. The netphone may automatically establish a communication connection according to the user's command, and close the video communication at anytime, which is convenient for operation and protects personal privacy sufficiently.