400电话重要的一点就是能为企业树立一个好的形象，因为就目前而言大多数的企业还是没有400电话的，而一些大型的企业集团对外的服务号码都喜欢用400电话，这就无形之中让人感觉用400电话的企业应该也是很有实力的值得信赖的企业,所以说，在证明了企业实力，提升企业形象的同时，400电话为客户免了长途费用，就会吸引更多客户，那企业的潜在客户就会积累起来。
The important thing about using a 400 phone is that it can establish a good image for enterprises, because currently, most enterprises do not have a 400 phone, and some large enterprise groups prefer to use a 400 phone for external service numbers. This invisibly makes people feel that enterprises using a 400 phone should also be very powerful and trustworthy enterprises. Therefore, while proving the strength of the enterprise and enhancing its image, By exempting customers from long-distance fees for 400 calls, it will attract more customers and accumulate potential customers for the enterprise.
再次，企业400电话，不会占线，免去了之前业务电话繁忙时占线的问题。
Once again, the company's 400 phone line will not be busy, eliminating the problem of busy business calls before.
第三，400热线，不管是登在网站还是宣传，都是企业一张闪亮的名片，如果客户在一个使用普通号码和400号码的商家间选择，400电话无疑是胜出的．
Thirdly, the 400 hotline, whether posted on a website or promoted, is a shining business card for a company. If a customer chooses between a merchant using a regular number and a 400 number, the 400 hotline will undoubtedly win
第四，也体现了企业的实力，符合世界商业潮流。目前包含海尔、中信银行等在内多家企业已全面启用400号码。与800号码相比，可以覆盖多达5.2型线  流水槽模具 景观石 检查井钢模具 保定通风管道 隔离墩模具 保定保洁公司亿手机用户。主/被叫分摊付费的方式，有效杜绝恶意呼叫（800号码主叫全免费）。
Fourthly, it also reflects the strength of the enterprise and conforms to the world business trend. At present, many enterprises, including Haier and China CITIC Bank, have fully used 400 numbers. Compared to 800 numbers, it can cover up to 520 million mobile phone users. The method of shared payment between the host and the called effectively eliminates malicious calls (all calls to 800 numbers are free).
第五，自助管理/方便开通，方便快捷，成本低。号码终身携带，乔迁新址，增扩办事处不用变更号码。
Fifth, self-service management/convenient opening, convenient, fast, and low-cost. The number is carried for life, and there is no need to change the number when relocating to a new location or expanding the office.