IP话机是指用于VoIP（Voice over Internet Protocol，网络电话）通信的专用设备。 VoIP话机可以实现通过互联网实现语音通信的功能。通过IP话机，用户可以通过固定的或移动的网络实现语音和视频的传输。
IP话机一般有2种结构：IP端口（IP端口）和网络连接的传统电话机（增强型IP端口，Ethernet端口）。前者只能连接到Internet，而后者可以通过有线或者无线连接到外部设备，可以连接到以太网或其他网络上的计算机、手机等设备。
IP话机一般包括屏幕、音频和管理方面三个部分。屏幕可以显示当前通话的用户，进行通话中止、回顾、拨号、挂断等操作；音频部分支持高品质的语音传输；管理部分可以实现网络配置和其他功能操作。
IP话机的优势在于，用户可以通过Internet实现实时的语音传输，不受地理距离等因素的限制，而且通话质量较好，并且可以实现多人通话，还可以实现与其他IP设备的联通，实现多种通讯。但同时也存在一些问题，比如由于网络环境不稳定，容易引起一些问题，像网络拥塞、网络中断等都会影响语音质量。
IP phones are special devices used for VoIP (Voice over Internet Protocol, Internet telephony) communication. With IP phones, users are able to realize the transmission of voice and video over fixed or mobile networks with the help of the Internet.
IP phones are generally pided into two types, IP ports (IP ports) and traditional phones connected with networks (Enhanced IP ports, Ethernet ports). The former can only connect to the Internet, while the latter can directly connect to external devices via wired or wireless ways, such as computers, phones, etc. connected to the Ethernet or other networks.
IP phones usually include three parts: screens, audio and management. The screen can show the user in the current call and help to operate like ending the call, reviewing, dialing and hanging up, etc. The audio part supports high-quality voice transmission, as well as the management part handling the configurations and other operations on the network.
The advantages of IP phones are that users are able to realize real-time voice transmission through the Internet and not limited by the limit of geography, moreover, with good voice quality, they can realize multiple people’s conversation and communication with other IP devices. However, some problems still exist. For instance, unstable network environment may cause some problems, such as network congestion and interruption, which will affect the voice quality.
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