With the development of cable and wireless communications and through the comparison of the two transmission technology, this paper focuses on their relationship in the evolution of technology, and then through the graphical chart, illus trates the replacement of fixed-line voice services by mobile voice services, including their fierce competitions.

Research on wired/wireless di-network security and alarm system;

Integrated Telecommunication System providing both wired access and wireless access for Group Users;

Now the wired directional control system is often used in engineering for its more accurate controlling,which applies to big directiona.

As a result,a series of negative consequences will take place such as wire line wringing,wreathe of hose and wired MWD cables,and other downhole accidents.