来源：http://www.jnsll.com 发布时间：2020-11-11 16:11:22 浏览次数：
If you want to make a 400 call, don't worry about it. In fact, the quality of the 400 phone is very stable. Just like your own fixed line, it is called PSTN line in the operator. Before handling the 400 call, we must find a company with good service, good reputation and good reputation to help you access. Because the formal authorized 400 telephone handling companies are all approved by the 400 telephone official, each 400 number is carried on the professional 400 telephone server, whether in terms of call quality or server stability, they are opened and used after special detection.
In fact, it is very simple to apply for 400 phone calls. However, if any of the links are not properly controlled, the situation of 400 phone calls will be unstable. Therefore, before applying for 400 telephone calls, you must choose a regular 400 telephone handling company. Money is a small matter, corporate image and the development of the company's work is the most important, choose a safe 400 telephone company to handle, is for you and your enterprise to create more value choice.
我司提供的 400 电话接入线路是十分充足的， 400 走的是PSTN实体电路本身并不会占线；只要您绑定多个被叫呼转号码,就可实现多线同时呼入，不受限制。
The 400 telephone access line provided by our company is very sufficient. The PSTN physical circuit of 400 will not be busy. As long as you bind multiple called call to transfer numbers, you can call in multiple lines at the same time without restriction.
400 is a kind of called service, which can't be called out. However, there are still some 400 calls that can be dialed out of the market, which are all against the regulations. In the early stage, Unicom / Telecom has explicitly stipulated that 400 calls are not allowed to be called out, so as to prevent people from using 400 phones maliciously to do illegal things. If you meet someone who says that 400 calls can be dialed out, I will tell you that it is 100% irregular. What they take is the network route, not the PSTN physical route.