In our blog you´ll find technical articles, practical tips and news about network technology and data communication. 

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End-to-end links recognized by international standards

20.02.2024 | EN 50173-20 recognizes various types of end-to-end links as “alternative cabling configurations“.

installation cables

Installing outdoor cables inside of buildings

05.01.2024 | May outdoor cables be installed inside of buildings? What is written in the standards?


White paper “IT connectors for harsh environment"

05.01.2024 | IT connectors that are desingned for indoor use must not be used in outdoor applications. This includes IP67 rated industrial connectors. This white paper focuses on different operation conditions of IT connectors and the protective measures that go with it.

wet cable reel

What happens after copper cables have become wet?

22.02.2024 | Indoor copper cables shall not become wet. However it can happen that a cable drum accidentially stands in the rain or cables get wet by accident inside of a building. What impact does that have on the cable’s transmission performance?

fiber optic connectors

Fiber optic connector grades

05.01.2024 | Good fiber optic connectors have low attenuation and high return loss. But what exactly is “good“? IEC 61753-1 specifies performance grades for fiber optic connectors.

FFP Toolkit

Field-installable fiber optic connectors

05.01.2024 | Gone are the times when installing fiber optic connectors on a cable was for specialists only. Modern field-installable connectors can be installed on site as quickly and easily as connectors for copper cables.


White paper “Single Pair Ethernet and Power over Data Lines“

11.24.2023 | With Single Pair Ethernet, Ethernet becomes the uniform communication protocol on all levels of industrial automation and building automation. Some standards are still under progress. This white paper gives an overview on the status quo of standard and technology.

E2E Tester

Can patch cords be tested performing just a channel test?

11.20.2023 | Patch cord have plugs on each end, channel test adapters have jacks. Should be a perfect fit, shouldn’t it? Unfortunately, it isn’t, as it gives you completely wrong test results. Read on to find out why.

Standards for Ethernet

IEEE 802.3 Standard for Ethernet

10.24.2023 | IEEE 802.3, 802.3at, bt, af, … IEEE numbers can be a bit confusing. In this article we focus on the numbers of the IEEE Standards für Ethernet.


Important global standards

06.29.2023 | The last issue of this column provided and overview on important American standards for IT cabling. This issue focuses on global standards.

What do red and black connector boots on fiber optic patch cords mean?

07.04.2023 | Fiber optic patch cords with single-fiber connectors often have one connector with a red cable boot and another connector with a black one. What does that mean? Read on to find the answer.


Important european standards

05.22.2023 | With a nearly countless amount of standards available, it is not always easy to keep things in perspective. Please find an overview of important European standards on IT cabling here.


Fiber color codes for fiber sequence

05.25.2023 | Unlike commonly believed, IEC 60304 does NOT specify any fiber sequence. The standard just specifies twelve different colors. The sequence of these colors is specified by other standards which differ from each other.



RJ45-Stecker and SPE

The difference between Power over Ethernet (PoE) and Power over Data Lines (PoDL)

05.22.2023 | Both, PoE and PoDL can power Ethernet devices over data cable. However, the two are not compatible at all – read on to find out why.


Different Types of Testers: Verifier, Qualifier and Certifier

05.22.2023 | What is the difference between a verifier, a qualifier and a certifier? Find out the difference and learn where to use which of them.


New data center cabling standard ISO/IEC 22237-5

11.23.2023 | In the past days, a “new ISO/IEC 22237-5 standard for data centre cabling“ made network designers and installers unsure. However, there is nothing to be unsure about as neither this particular standard nor its content are new. Read on to find out more about this standard.

IPC COntacts

The difference between IDC and IPC contacts

10.24.2023 | IDC and IPC contacts terminate the wires of a cable in an outlet, in a module or in a plug. Read on to know the difference between the two contact types.

Fiber optic cable jacket colors – and why you shouldn’t rely on them

06.29.2023 | There are standadized colors not only for optical fibers but also for the cables that hold them. The benefit of it: One can tell the fiber type that’s inside of the cable at first glance. However, not all cable manufacturers follow the standard.

Important American Standards

06.30.2023 | The last issue of this column provided and overview on important european standards for IT cabling. This issue focuses on American standards.

Barrier Sealing

Impermeability of Coaxial Connectors

09.14.2023 | Impermeability refers to the ability of coaxial connectors to prevent the ingress of moisture, dust, and other contaminants, which can degrade signal quality and compromise the overall system integrity.


White paper “High-performance IT cabling for Schools“

05.22.2023 | The white paper explains planning recommendations and product solutions for robust, future-proof and economic IT cabling in schools – straight-forward and easy to understand.

SC Adaptors

Are there couplings to connect SC and LC fibre optic connectors?

05.19.2023 | Can old SC and new LC plugs be mated in the same adaptor like SC and ST? Read on to find the answer.