近日,中国电信宣布将对 IP 电话网络实行扩容。扩容后的 IP 电话网将为国内 IP 电话呼叫提供两种服务。一是利用接入码179拨打 IP 电话的预付费业务,另一种即将开通的服务是采用一次拨号的方式实现 IP 电话呼叫。中国电信目前拥有的1.5亿国内有线电话都可以拨打17900,IP 电话呼叫的费用 Recently, China Telecom announced that it will expand its IP telephony network. The expanded IP telephone network will provide two kinds of services for domestic IP phone calls. One is to dial the prepaid service of the IP phone by using the access code 179, and the other service to be started is to implement the IP phone call in one dialing mode. China Telecom currently has 150 million domestic wired phones that can dial 17,900 for IP phone calls