How to choose additional equipment
An important place in the LAN of the office is occupied by the wiring closet. The cabinet itself does not directly participate in the work of the LAN, but it allows you to protect the active and passive equipment that is installed in it from the playful pens of curious employees, dust, electromagnetic fields, temperature changes and mechanical influences. If you are seriously worried about the security of information stored on the server, and you want to restrict access to it by unauthorized persons, then a server should also be installed in a lockable cabinet of a suitable size. Sometimes this solution is the only acceptable, because in a small office it is not possible to allocate a special server room. It is also rational to place an internal telephone exchange in a cabinet, for the same reasons. The dimensions of wall and floor cabinets are given in units (abbreviated U), i.e. in the number of seats of standard 19-inch equipment that can be installed in a cabinet. A seat in one U is about 45 mm high. In our market, cabinets are available in sizes from 6 U to 44 U.
The next seemingly unnecessary, but very useful detail in the office cable system is the patch panel. At its core, it is a 19-inch metal plate on which RJ-11 or RJ-45 jacks are placed for connecting telephone or data lines, respectively. The number of ports (sockets) on a patch panel is usually 12 or 24, although there are panels on 48 or even 96 ports. The information and telephone jacks on the rear of the panel are directly connected to the corresponding wall outlets using a laid cable. On the front side, through a patch cord (a cable length of 1 m, with RJ-11 or RJ-45 connectors installed at both ends), the output lines of the internal telephone exchange or ports of the hub are connected to the sockets. For example, moving a telephone subscriber from one room to another is carried out within a few seconds by switching the patch cord on the patch panel from one socket to another.
For small networks, which we are talking about, it is convenient to use 24-port dialed patch panels, in which you can install in any order both the RJ-11 and RJ-45 sockets. This simplifies cable termination during installation and administration during operation. In the cabinet, such a panel occupies a seat of 1 U. We must not forget about the possibility of moving the office to a new building. In this case, all installed LAN components can be used again after dismantling (up to 5 … 7 times), and the patch panels are reorganized in accordance with the new conditions.
Better and cheaper?
Usually, when a decision is made to purchase equipment, you want to purchase either the best, or inexpensive, and even better if both of these qualities are combined in one sample. But this does not happen! Only one list of SCS, which are offered by various companies, looks very impressive. And it can be difficult to choose one. Adherents of some SCS find faults in others, and vice versa. We will not now go into the consideration of the technical subtleties and differences of this or that SCS – this is a topic for another discussion. We will only say that the technical solutions and characteristics of all SCS meet international and European standards and any of them has the right of residence in your office. The very approach to creating a LAN is important, which allows you to avoid many troubles during operation. The technical details of the specific implementation will be left to specialists in the field of network integration.
There is no doubt that the components of SCS, which we talked about, from brandname are always more expensive than similar nonename, made, for example, in Taiwan. You can significantly reduce the cost of equipment by purchasing patch panels and sockets of this origin, while maintaining a common approach to building a network. However, if you want to get a stable network at 100 Mb / s, then it is better to contact a certified installer of a particular SCS. If you use components from different manufacturers, even if these components are labeled CAT 5, you may be disappointed. In addition, certified companies usually give a 15-year warranty on components or the entire cable system from an SCS supplier. It is interesting to note the fact that not all office network customers require such a guarantee.
For any customer, long-term work with one reliable supplier of equipment and services is of interest. There are companies on the domestic market that will offer you everything that is necessary for organizing a LAN and successful further work: servers, workstations, printers, modems, licensed software, cable management, network OS setup, repair, maintenance and modernization of a computer equipment, staff training and more.