400电话是运营商推出的一种主被叫话费分摊电信增值业务，已经成为现今不少企业的“标配”之一。一般来说，只要是正规的企业或者个体户，均可以免费申请400电话。400热线不仅体现了企业服务的意识，同样也是信誉和实力的象征。

The 400 phone is one of the "marking" of many enterprises. In general, as long as it is a regular enterprise or individual, all of them can apply for 400 calls free of charge. 400 hotline not only embodies the consciousness of enterprise service, but also a symbol of reputation and strength.

400电话使用范围很广，比如说做公司总机、咨询热线、售后服务热线、会员热线、销售热线等等。具体适用行业可以分为以下几类：

400 the range of telephone use is very wide, such as the company general machine, the consultation hotline, the after-sales service hotline, the member hotline, the sales hotline and so on. The specific application industry can be divided into the following categories:

（一）全国连锁行业

(1) national chain industry

它们在全国都有各种分支，那么对这些分支进行管理就需要有一个统一的客服电话来处理这些分支的问题。没有这种统一的电话，那么客户的问题都直接反应到了一些分支的公司，总部无从知晓问题究竟有哪些了。

They have a wide range of branches throughout the country, and the management of these branches requires a unified customer service call to deal with these branches. Without such a unified phone, the customer's problems were directly reacted to some branches of the company, and the headquarters did not know what the problem was.

典型行业：物流业、旅游业、零售行业、酒店业等。

Typical industries: logistics, tourism, retail, hotel industry and so on.

（二）开展全国业务的企业

(two) enterprises carrying out national business

有些企业虽然没有在全国设立分支，但是由于提供的产品或者服务的特性，能够覆盖全国范围。

Although some enterprises have not set up a branch in the country, they can cover the whole country because of the characteristics of the products or services provided.

典型行业：全国性实体行业以及信息增值业务、信息台、互联网公司(ISP/ICP)等等。

Typical industries: national entity industry and information value-added services, information stations, Internet Co (ISP/ICP) and so on.

（三）重售后服务行业

(three) heavy service industry

为了提供更优质的售后服务，这些企业一般会建立专门的客服热线呼叫中心。一般来讲，400电话与呼叫中心的配合能起到良好的效果，400呼叫中心也是目前主要的一种呼叫中心形式。

In order to provide better after-sales service, these enterprises generally set up special customer service hotline call center. Generally speaking, the combination of 400 telephone and call center can have good effect, and the 400 call center is also the main form of call center at present.

典型行业：酒店、旅游、证券、基金、保险公司等。

Typical industries: hotels, tourism, securities, funds, insurance companies and so on.

另外，400电话也能帮助政府事业单位来构架政府与公众之间的沟通桥梁;还能帮助未在信产部申请到专用短号码的企业等，400号码能作为其统一、易记忆的企业客服中心接入号码。

In addition, 400 telephone communication bridge can also help government institutions to frame between the government and the public can not help; in the application to the special short number of enterprises, the 400 number can be used as the unified enterprise customer service center and easy access number memory.