User number is a scarce public resource, which is the day since the birth of telecommunications technology started to have become an axiom that never received challenge. Therefore, regardless of fixed phone number or mobile telephone number, as a resource management and allocation by the state, after application and then been sold as a service to users.
Since resources are scarce, then it will have a high appreciation space, and the good number can be sold for even hundreds and thousands yuan. Through the strong control of numbers the telecommunications industry has also established its own unique lock advantage. No matter what kind of telecommunications services, the core relys on its phone numbers. Phone number is the only valid ID in the telecommunications industry. And those who do not carry the phone number on the telecom business have disappeared in the end.
However, building the enclosed phone number world is in serious crisis. Internet is a troublemaker in this crisis. VoIP has become the core of the trouble manufacturing.
Apple iphone develops their own user with an identity card of a chip in the site of operators, and tried to promote the soft SIM card, and intends to promote a new telecommunications industry standard for aparting the user from the operator.
facebook use the only mark in their own way for the global distribution of hundreds of millions of users around the world, not only non-supervised by the U.S. FCC, but also naturally non-subject to any other telecommunications regulatory authorities of the management.
Google Voice is also shielding the operator's telephone number, although it is closely related to operators.
Tencent QQ has hundreds of millions of users, which have been able to provide voice, messaging and all kinds of business that relies on is self-coded rules.