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网络电话(简称IP电话)是利用因特网实现远程通话的一种先进通信方式。使用网络电话替代国际长途电话,可大大降低通话成本。比如,你与一位在美国的朋友通过IP电话交谈,那么你和这位朋友只需要付出各自拨号连接到本地ISP(信息服务商)的市话费和上网费即可,用普通电话打到美国每分钟18.20元的电话费就省掉了。 网络电话的分类:要打网络电话,首先要弄清楚网络电话的分类和原理,目前IP电话可以分为三种类
Internet telephony (referred to as IP telephony) is the use of the Internet to achieve an advanced communication method of long-distance calls. The use of Internet telephony instead of international calls can greatly reduce call costs. For example, if you are talking to a friend who is in the United States over an IP phone, you and your friend only need to pay for their local dial-up connection to the local ISP (Internet service provider) 18.20 yuan per minute phone bill was saved. Internet phone classification: To make Internet telephony, we must first clarify the classification and principles of Internet telephony, IP telephony can be divided into three categories