What is Athlon XP?
Athlon XP processors are truly a whole family of processors. This family now includes five models with slightly different cores. The very first processor of the Athlon XP family is…

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Metrology notes
Despite the variety of generally accepted tests, recently their results have often added confusion than to clarify the essence of the phenomena. There are tests that allow you to measure…

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Athlon XP: not by number, but by reduction!
When this issue of the magazine was being prepared for publication, a remarkable event occurred: the next Microprocessor Forum. Probably, when you read this article, you already know that AMD…

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Custom solutions for local networks of small offices

From the school bench, we are all familiar with some of the laws of nature, which are therefore called the laws that cannot be violated. However, in addition to laws, there are rules, of which, as you know, there are exceptions. To make life easier in the manufacture of technical products, people also came up with standards – rules that apply only to manufacturers. These rules are also beneficial to consumers, as they ensure the compatibility of products made according to the standard and allow the product to be checked for compliance with the declared characteristics.

Over the past 20 years, cable systems designed to automate the workplaces of office employees have passed the evolutionary path of development from highly specialized expensive solutions to universal cable systems that are based on the principles of open architecture. Modern structured cabling systems (SCS) of buildings (offices) are designed and built in accordance with a set of basic technical characteristics defined and fixed in standards. Currently, the market has a wide selection of electrical and optical products that allow you to create SCS with capacities from tens to tens of thousands of ports using standard means using standard solutions. The unified ideology of constructing such cable systems allows further development and integration of disparate parts into a single whole due to the support of a wide range of network applications and network equipment. The technical level of the element base set by the current standards ensures the operability of such systems and supports existing and promising applications for 15 … 25 years.

No one disputes that standards are a necessary thing, but in some cases they exceed our needs with their excessive versatility, and sometimes following them leads to excessive appreciation. But is it possible to treat standards as rules, following the principle that rules are therefore called rules, not laws, because there are exceptions to them? “Follow standards if you don’t want to have problems” – this is the usual answer of well-known manufacturers. Of course, it is difficult to argue with this statement, but nevertheless, “if you can’t, but really want to …”, is it possible?

Let’s try to answer this question in relation to the standards adopted for SCS local area networks (LANs). The main provisions of such standards as ISO / IEC 11801, EN50173 and TIA / EIA-568-A can be found in [1], many interesting things are also published in periodicals devoted to network topics.

We will not consider the standards as such, but only touch on some of their provisions, bypassing which can bring some economic benefits, although sometimes to the detriment of the principle of universality and redundancy, characteristic of SCS. Non-standard, but workable technical solutions in the field of cable systems have the right to life and are considered private solutions. Typically, such solutions are not certified by manufacturers of SCS. When introducing a private solution in the office, one must always remember that very soon the bottlenecks of such decisions will be felt, especially in dynamically developing companies. Some private solutions are considered by customers as temporary, and they are quite satisfied with the guarantee for such systems for a period of 2 … 3 years instead of 15 … 25 years for SCS, designed and manufactured according to standards.

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Athlon XP: Awaiting 64-bit Architecture
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