1. Caution with four 86 panels
at present, often in the project bidding documents to see the "Information export using four 86 panels, installation of 6 class information module" requirements. We all know that the installation of the 86-panel box is small, in such a small space to install four 6 class modules, but also have four thicker 6 cable terminals in the module, can hardly guarantee the installation standard for 6 types of cable bending radius requirements. The reason why we do not have any unusual feeling of such installation, because we are in the actual horizontal link application is still relatively low, once the network to upgrade to a higher rate, it is easy to cause unpredictable results, the impact of normal use. The correct and safe procedure is to embed two 86 bottom boxes and install two double port 86 panels where four points of information are required.
2. The level system as far as possible one-step
in the bidding document, we also often see "horizontal links for voice applications (including information modules, horizontal cables and wiring racks) using Super 5 systems for horizontal links (including information modules, horizontal cables and wiring racks) for data applications, using 6-Class systems", This so-called money-saving approach makes the cabling system completely out of openness, flexibility and scalability. We all know that horizontal lines in the horizontal link from each floor to the information exit, almost all are first to go to the ceiling line trough, after the break through the tube, once the cable laying completed it is difficult to take out replacement; In addition, the current wiring system is no longer just for voice and data services, more for the higher speed and future of the unknown application services. If the horizontal link is now zoned for application boundaries, one is running at a high speed and one is running at a low speed, then the port interchangeability, flexibility, and extension of future ports and the so-called openness of the cabling system will no longer exist. Therefore, no matter what application of the horizontal link, should be selected the same, but also a more advanced wiring system, do not limit the level of application scope, the integrated wiring system itself is an open system. Www.3lian.com
3. The backbone system needs to be able to save provincial
and horizontal system requirements in contrast, many users of the backbone system requirements are one-step, in the tender documents can often be seen in the "voice backbone of 5 classes of 25 pairs of large pairs of cables, data backbone using Single-mode fiber ...". First of all, for the voice backbone, mainly used for the transmission of Analog voice signals, the rate is very low, 3 large logarithmic UTP has been fully enough, if the voice system to upgrade to a digital system, it will no longer use large log cable as the backbone, but the full use of digital IP network system, so will use the fiber as the backbone; , the single mode fiber is characterized by its high bandwidth and long-distance transmission, mainly as the building blocks between buildings and building data backbone, such as campus network, airports, large communities and comprehensive commercial buildings, and for a single building vertical data backbone, regardless of the bandwidth and distance requirements, the use of multimode fiber is enough, do not need to use single mode fiber (Active and passiveSingle-mode fibre ports are more expensive than multimode fibre ports also do not need to reserve single-mode fiber as backup, mainly because the backbone cables and optical cables are laid along the weak shaft, very easy to replace and expand, so the choice of backbone system is not necessary one-step, as long as the application of the current and have a certain degree of redundancy, The future can be expanded and upgraded as needed.