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经信息产业部批准,中国电信于今年4月底至12月底进行网络(IP)电话业务试验。北京作为首批试验城市之一,北京电信已经开始投入商用试验,并且多次在北京长途电话局营业厅公开销售网络电话卡,该卡很快被抢购一空,聪明的收藏者已经意识到,网络电话卡将成为继田村卡、IC智能卡之后,又一个具有较大收藏价值的新品种。 IP电话是指利用TCP/IP协议,通过计算机网络实时传送语音信息。它采用语音压缩技术,节省了网络的带宽,降低了通信成本。由于中国电
Approved by the Ministry of Information Industry, China Telecom conducted network (IP) telephone service trials from the end of April to the end of December this year. As one of the first pilot cities in Beijing, Beijing Telecom has started commercial trials and has publicly sold VoIP cards in the Beijing Long Distance Telephone Office for many times. The cards are quickly sold out. Smart collectors have realized that calling cards Will become the next Tamura card, IC smart card, another with a larger collection of new varieties of value. IP Telephony refers to the use of TCP / IP protocol, real-time transmission of voice information through the computer network. It uses voice compression technology, saving the bandwidth of the network, reducing communication costs. Thanks to China Power