The Mobile Number Portability Applied Study About Core Network Of Tianjin China Unicom

The portability of the net which can also be called number portability, the user without changing the number can from the original operator to another operator network, enjoy to the operators to carry out the various services and business.The thesis introduces the theory about the basic conditions and core network routing, call flow mode, and the core network to conduct in-depth analysis of Tianjin. The portability of network transformation includes the core network transformation, business network transformation, local support system alteration and other network adjustment.This article through to the Tianjin network portability of the net in the core network technology to conduct in-depth analysis, elaborated the Tianjin Unicom how the original relatively independent network operators to carry out the transformation and the user does not need to change their telephone number and can become another operator of the user, and can use the normal enjoy the operator to provide telecommunication services. Proved through the network design to voice, SMS, MMS business smoothly purpose. But according to the actual situation to choose the appropriate number portability technology, establish and improve the corresponding regulatory system, reasonable arrangement of network switching cost, grasp the right to network time. To guarantee the smooth implementation of the portability of the net, for the realization of China’s telecommunication industry reform goal to play its due role.