tailieunhanh - KRONE - White paper - Understanding UTP Cabling
Tham khảo tài liệu 'krone - white paper - understanding utp cabling', công nghệ thông tin, quản trị mạng phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 1550UnderstUTP Cabling 4/20/99 9:23 AM Page 2 UTP Cabling By Bob Kenny Director of Data Cabling Technologies, Prestolite Wire Corporation Unshielded Twisted Pair (UTP) cabling has dramatically impacted network infrastructures. It has enabled end users to specify a singular type of cable independent of their LAN application. But lately, the “singular” solution of UTP has become unclear. There are now multiple grades of UTP cabling available, ranging from basic Category 3 to the proposed Category 6. As a result, understanding how to specify UTP Cabling is becoming more and more difficult for the end user. There have been a great many articles written on this subject. Some view the insurgence of new, higher grades of UTP cabling as nothing more than hype. Others look at the enhancements as long overdue upgrades to inferior technology. So, which is right? UTP Cabling Defined During the last decade, UTP cabling has undergone many changes. As network needs have increased, so has the perceived need for higher-end UTP cabling. But before the merits of UTP cabling are discussed, we must first understand the terms that define it. The purpose of any networking cable is to carry data from one device to another. Devices can include terminals, printers, and servers (just to name a few). There are many types of cabling media to which these devices hook up. Examples are fiber optic, coaxial, twinaxial, and both shielded and unshielded twisted pairs. Deciding which cabling type is best for a given application involves understanding many factors such as distance, life cycle, noise environment, security, cost, flexibility, and data rates. Many end users consider unshielded twisted-pair cabling a good medium for many of these concerns. UTP has gained most of its success in the horizontal environment, specifically, cable runs from the desktop to the wiring closet. As its name suggests, UTP consists of multiple unshielded twisted pairs surrounded by an overall jacket. Although available
đang nạp các trang xem trước
