Data transmission can be simply divided into wired (including erection of cable, telecom cable or leased line) and wireless (divided into establishment of a dedicated wireless data transmission system or borrow CDPD, GSM, CDMA network and other public information platform) two ways.
Compared with the radio set up a dedicated wireless data transmission over wired has the following advantages:
1、Less investment
Use wired communication, and buy their own power cables, digging trenches, require substantial human and material resources; leased telecommunications lines, monthly allotments running costs. The establishment of a dedicated radio with radio data transmission, each terminal connection just set up the appropriate radio and antenna height on it. This difference in distance or field conditions is more evident when the complex.
2、Opening soon
When should a few kilometers or tens of kilometers away from the remote sites connected with the master communication when using wired way to set up long-distance cable or long cable trench excavation, the project cycle may take several months time, and with the establishment of a dedicated wireless radio data transmission, only need to set the appropriate height of the antenna, project cycle, only a few days to complete.
3、Easy maintenance
Wired communication lines along the road maintenance needs check fails, generally difficult to identify the failure point in time, while the use of radio to establish a dedicated wireless data transmission only needs to maintain radio, failure to quickly find the cause, immediately resume normal operation .
4、Adaptable
Wired communication is too restrictive, in the face of some special applications, such as encountered in the mountains, lakes, forests, roads, buildings and other special geographical environment or moving objects and other wiring applications more difficult when the on the cable network cabling project has a strong constraint force, and with the establishment of a dedicated wireless data radio transmission will be exempt from these restrictions.
5、Good scalability
The user set up a good communication network, often because the system needs new equipment. If using wired way, need to re-wiring, construction is too much trouble, but also may undermine the original lines of communication, but if the use of radio to establish a dedicated wireless data transmission, just new equipment and wireless data radio connected to expansion of the system can be achieved.
