Education network is the network of education system construction, which is based on the interconnection between schools and all kinds of resources are shared and supported. The object of educational network service is the teachers, students and educators of the school.
Therefore, the public network and the education network are two different networks. The public network is rich in resources because of its many clients. Education network resources are relatively scarce, mainly because there are relatively few clients and little export bandwidth allocation. That's why our visit to edu.cn's website is so slow.
A long time ago. . . At the beginning of the world, everything was still in the state of wonton. . . Hey hey, that's beside the point.
In fact, in the early days of China's liberation, the so-called telecommunications industry had only one subordinate organ-the post office, which, as its name implies, was posts and telecommunications. At that time, telecommunications only had telephone, telegraph and other services. With the reform of spring breeze and the rapid development of IT industry, the post office has gradually introduced many new services, first paging, then cellular analog mobile phone (mobile phone), Internet access and voice. . . The diversified development of this industry has shown unprecedented vitality (including the development of postal industry, postal savings, EMS express and so on). Are beyond the scope of this post), but also exposed some problems: the organization is too bloated, because there are too many businesses involved, which is not easy to manage, which is really a big problem for the telecommunications industry in China at that time. So the state intervened and divided the post office into postal service, telecommunication service and paging service (it seems that there is also a stamp company that is responsible for the sales of stamp products). Then, the new mobile phone technology digitally replaced the analog mobile phone, so the mobile company came into being. At the same time, China quietly established a new telecommunications company-Unicom, and also started the mobile communication business, and introduced CDMA, a very advanced communication technology at that time. Later, China Unicom acquired the paging company, and the mobile company also grew up with the monopoly business share. The year before last, China Telecom was divided into two groups: Telecom and Netcom. Seeing this, the landlord understands something. Now I will answer your question.
2/ Mobile did enter the business earlier than China Unicom, but China Unicom had state support in the early stage and price policy in the later stage. Therefore, China Unicom and the mobile market are completely sworn enemies, and both of them can't wait to get rid of each other, and then quickly. Hey, hey, just look at the popular video collections on the Internet. They are also two difficult to deal with in the interconnection work. Who told them that their competition is so direct?
3/ PHS was originally an illegal product of early telecommunications. At that time, the country did not allow development, but we could do it underground, hehe. So far, the development of PHS is in full swing. It can be seen that those who follow the people's will win the world, and even the country has to acquiesce. This has also made many companies like UT Starcom rich. At that time, PHS was also a monopoly, and the machine was expensive ~ ~ but there was nothing to say about the tariff, the land price.
4/ADSL business, now not only Unicom, Telecom and Netcom have developed, but also companies such as Tietong and Jitong have small markets.