ip电话英文

是VOIP吗？？VIOP不知道,如果是VOIP的话:Voice over IPVoice over Internet Protocol, also called VoIP, IP Telephony, Internet telephony, Broadband telephony, Broadband Phone and Voice over Broadband is the routing of voice conversations over the Internet or through any other IP-based network.Protocols which are used to carry voice signals over the IP network are commonly referred to as Voice over IP or VoIP protocols. They may be viewed as commercial realizations of the experimental Network Voice Protocol (1973) invented for the ARPANET.ce providers. Some cost savings are due to utilizing a single network to carry voice and data, especially where users have existing underutilized network capacity they can use for VoIP at no additional cost. VoIP to VoIP phone calls on any provider are typically free, while VoIP to PSTN calls generally costs the VoIP user.There are two types of PSTN to VoIP services: DID (Direct Inward Dialing) and access numbers. DID will connect the caller directly to the VoIP user while access numbers require the caller to input the extension number of the VoIP user. Access numbers are usually charged as a local call to the caller and free to the VoIP user[citation needed] while DID usually has a monthly fee. There are also DID that are free to the VoIP user but isIP电话IP电话(简称VoIP，源自英语Voice over Internet Protocol；又名宽带电话或网络电话)是一种透过因特网或其他使用IP技术的网络，来实现新型的电话通讯。过去IP电话主要应用在大型公司的内联网内，以让技术管理人员可以同时以一个网络提供数据及语音服务，简化管理之余，更可提高生产力。随着因特网日渐普及，以及跨境通讯数量大幅飙升，IP电话亦被应用在长途电话业务上。由于世界各主要大城市的通信公司竞争日剧，以及各国电信相关法令松绑，IP电话也开始应用于固网通信，其低通话成本、低建设成本、易扩充性及日渐优良化的通话质量等主要特点，被目前国际电信企业看成是传统电信业务的潜在有力竞争者。