什么是400电话业务？
What is 400 Telephone Service?
400业务又称"全国统一接入码业务"，号码由10位数字组成，是电信运营商专为企事业单位设计的全国统一的、强大的虚拟电话总机，所有拨打400电话总机的来电均被转接至预先绑定的实体电话上接听。
400 service, also known as "National Unified Access Number Service", consists of 10 digits. It is a national unified and powerful virtual telephone switchboard designed by telecom operators for enterprises and institutions. All calls to 400 telephone switchboard are transferred to pre-bound physical telephone to receive.
实现企业对外宣传统一性，规范性。
Realize the unity and standardization of external propaganda of enterprises.
400电话话费由企业和拨打400电话的用户分摊，用户无需支付长途费用，体现了企业用户至上的服务意识，也是企业信誉和实力的象征。
The cost of 400 telephone calls is shared by enterprises and users who dial 400 telephone calls. Users do not need to pay long-distance fees. This reflects the service consciousness of enterprise users first, and also symbolizes the credibility and strength of enterprises.
划重点：购买400电话是企业信誉和实力的象征，就像企业选择办公楼，建立一个漂亮的网站一样，选择一个好的400号码，也是企业形象建设，提升消费者购买信心的一部分哦！
Key Points: Purchasing 400 telephones is a symbol of corporate reputation and strength. Just as an enterprise chooses an office building and builds a beautiful website, choosing a good 400 number is also a part of corporate image building and improving consumers'purchase confidence.