400电话是一个虚拟号码，办理开通是没有任何实体设备的，会有一个管理平台，企业可以登录后台对功能和号码进行设置，从而开始使用，简单来说，400电话是一个虚拟总机，通过绑定手机或固话来实现接听，可以支持很多电话一起拨打，具有不占线的优势。
The 400 phone is a virtual number. There is no physical equipment for opening. There will be a management platform. Enterprises can log in to the background to set functions and numbers, so as to start using. In short, the 400 phone is a virtual switchboard, which can be answered by binding mobile phones or fixed phones. It can support many phones to dial together, which has the advantage of not busy.
另外，400电话虽然也是作为客服使用，但它只能用来接听，不能外呼，即便开通呼叫中心业务，外呼也是不能显示400号码的，这个企业在办理时需要注意下。400电话只能是企事业单位办理，个人是不能申请开通的，办理时需要营业执照等。
In addition, although the 400 phone is also used as a customer service, it can only be used to answer and cannot be used for outbound calls. Even if the call center business is opened, the outbound call cannot display the 400 number. This enterprise needs to pay attention when handling. 400 telephone can only be handled by enterprises and institutions, and individuals cannot apply for opening. They need a business license when handling it.
400电话最具吸引力的地方在于其具备很多功能，不同的功能对企业发展有着不同的影响，企业在办理时，可以多加了解，选择适合自己的功能，助力企业更好的发展。
The most attractive thing about the 400 telephone is that it has many functions. Different functions have different effects on the development of the enterprise. When handling, enterprises can learn more and choose their own functions to help the enterprise develop better.