Integrated Wiring technology research: Six types are not copper cabling induction

The significance of the introduction of class six standards

June 17, 2002, the United States Communications Industry Association formally adopted the six wiring standards, and in the appendix form of ansi/tia/eia-568b on June 24, the official printing and publishing, the standard officially named Ansi/tia/eia-568-b.2-1. Since August 1997, the first proposed six types of wiring specifications, after five years of contention, after a number of draft revisions, six types of wiring standards finally officially issued.

Six class cabling standards, not only ended the business in the product performance of the dispute situation, but also for users to choose six types of wiring products provide a reliable technical basis. To distinguish between the real six-class cabling system, as long as the system performance indicators to meet the six standards of all parameters of the requirements can be.

The focus of the five categories and six types of application disputes

Since the application of intelligent building technology in China, the controversy over the use of unshielded twisted pair in integrated wiring has never ceased. The first is the contention between the wiring supplier and the academia, wiring suppliers, including system integrators, new technologies, new products are more respected, on the one hand they want to make their own products or technology is always in the lead, in order to occupy as much market share, while the use of new technologies, new products will greatly improve system performance, Improve the reputation of the product or enterprise. And academia is more sensible, they consider more is the application of demand, not blindly respected new products. At the same time, there are two tendencies in the academic circle, some people think that at present, China's comprehensive national strength is not strong, in many areas of the network has not been so high application needs, so excessive investment is really a waste of resources. Among them, he is most concerned about the use of voice information points in the category of cable, because the analog phone in a long period of time far from the use of five types of cable bandwidth resources, not to mention more than five classes, six categories, so some people think that the integrated wiring will be the telephone integration is not necessary, but if a separate set of ordinary telephone lines, It's just not acceptable. To really solve this contradiction, I am afraid only the development of digital telephone technology (IP telephony), that is, the topic of the integration of multiple networks, but the integration of multiple networks has been mentioned for many years, real implementation, still to be a while.

Another part of people think that wiring technology has always been to develop, there is demand will have development, the national strength is not strong, does not mean anything to lag behind, conditional, demand users can completely track the latest technology, the use of the latest results. I also fully agree with this view. For the five categories, six types of wiring disputes, the author's view is: For a five-or five-type cable users, such as no network transformation and other special needs, let them eliminate the original five or five types of cable, rewiring six types of cable, to chase new technology, it is indeed unnecessary; for a new user, Whether to use a five-class cabling product or to use a six-class product depends entirely on the needs and decisions of the user. In the immediate case, the choice of six types of wiring, separate from the cost of wiring, compared to more than five kinds of 30%~40% about the cost, but the high bandwidth, High-performance returns. In June 2001, the American Association for Communications Industry (TIA/EIA-854), in response to the six draft, unveiled a full duplex gigabit Ethernet based on six-type balanced UTP, and recently Tia/eia is embarking on a new 1000base-tx alternative that, in the long run, With the release of six types of wiring standards, the introduction of new Ethernet transmission standard 1000BASE-TX, the gigabit network based on six-type cabling will become the new Gigabit Network application mainstream technology, so that copper gigabit to the desktop into the actual application. Although the five-type Gigabit Network application standard IEEE 802.3ab, or 1000BASE-T, was officially launched two years ago, the cost of expensive equipment has always hampered the use of gigabit networks based on the Super Five category, and so far it has not been applied much. According to market forecasts, based on the six-class Gigabit network card, active devices than the five-class cost of less than 30%, which to some extent also reduces the overall cost of the network.