Advantages of the first 400 calls, 400 calls the most important thing is the ability for enterprises to establish a good image; second, the 400 400 phone calls do not busy, eliminating the need for service calls when busy busy before the problem; third Master / called pay-sharing manner, effectively prevent malicious call (800 number calling all free); fourth, 400 calls for self-management, convenient, low cost, the price of 400 phone numbers carry for life, without changing the number. 400 Phone minute "Business Office Edition 400 calls" and "online edition of 400 calls." Internet telephony, also known as cottage version 400 400 calls, mainly handled by the network, in the operating room is not this kind of business, so the handle in the operating room is finding the relevant data and information. Such 400 calls mainly through VOIP Internet phone technology to achieve interoperability, the use of this service is mainly small businesses and individuals, such a network version of the 400 call does not distinguish between long-distance and local calls, so billing are also long distance , telephone a price, but this type of network version of 400 phone features more 400 calls, customers can modify the binding by landing back own phone and view call history, can upload their own ring tones, and some also listen, it is also people call this type of network version of the new 400 telephone 400 phone call. 400 Telephone Pick, Zhengzhou shark Network (certification), District 400 calls provided by sharks Network Technology Co., Ltd., Zhengzhou. Zhengzhou sharks Network Technology Co., Ltd. (www.shayuweb.com) is a leader in Zhengzhou, technical cooperation over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Sharks network leadership in Zhengzhou with the staff warmly welcome all inquiries negotiations to create the Zhengzhou shark network better future.