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从４月２８日起，中国电信将在北京等城市正式开始实验ＩＰ电话业务，用户可以通过购买电话记帐卡的方式来用ＩＰ电话打更便宜的国内、国际长途电话了。ＩＰ电话是指在ＩＰ网上通过ＴＣＰ／ＩＰ协议实时传送语音信息的应用。ＩＰ电话始于在因特网上ＰＣ到ＰＣ的电话，随后...
Starting April 28, China Telecom will officially begin experimenting with IP telephony in cities such as Beijing, where users can make cheaper domestic and international long distance calls using IP telephony by purchasing telephone debit cards. IP Telephony refers to the application of real-time voice information transmission over TCP / IP over IP networks. The IP phone starts with a PC-to-PC phone on the Internet, then ...