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有人预测:可视电话在近几年内即将成为我国继VCD、电脑之后的又一消费热点可视电话到底离我们还有多远?它已近在眼前。据有关资料显示,自1964年美国第一台黑白可视电话问世以来,可视电话的发展一直比较缓慢,1992年,美国AT&T公司推出了基于普通电话交换网的2500型彩色可视电话,可视电话才有了新的跳跃性的发展。1996年,国际通讯联盟正式批准了普
Some people predict that video telephony will become another consumption hotspot in China in the next few years following VCD and computer. How far is the video telephony far from us? It is already in sight. According to related data, videophone development has been slow since the launch of the first black and white videophone in the United States in 1964. In 1992, the AT&T Corporation of the United States launched a 2500 color videophone based on a common telephone switching network. As the phone has a new jumping development. In 1996, the International Communication Union formally approved the