Data networks/standard interfaces For science, industry and trade, communication via data networks such as LANs (Local Area Network) and WANs (Wide Area Network) is a part of daily life. The type of connection between the terminals in the data network is known as the topology of the network. In local networks, bus, ring and star topologies have proven themselves, also occurring as hybrids. The major data networks use coaxial, twinax, twisted pair or optic fibers for the transfer of data.

	Due to the wide network of information lines for communication systems, terminal equipment is particularly susceptible to conductor-specific surge voltage couplings. Telecommunications terminal equipment is today an integral part of office electronics systems. Telephone, telefax, answering machines and Internet PCs therefore belong to the indispensable aids for carrying out organizational, commercial and technical tasks. In addition, these devices are ready to receive messages at all times, even when the user is not present.

	The permanent availability of fast and reliable communication systems is necessary for the very diverse requirements, such as:

	Transmitting and receiving reproductions in the form of images and text, Research in Internet, Leaving messages for users who cannot be reached, Communicating orders and quotations, A quick conversation with the customer to settle problems.

The high capacity of modern telecommunications terminal equipment can only be achieved with the help of high-grade electronic components. However, this also makes it more susceptible to transient surge voltages. In order to be able to exploit the technical advantages of these devices permanently, suitable measures must be taken to ensure interference-free operation within the possibilities of modern technology. The use of surge protection devices is one of these measures. The TRABTECH range of products under the name "telecommunications protection" provide solutions designed specially for this area of application. Their high surge arresting capacity allows the protective devices to limit transient surge voltages which are coupled into mains or telecommunication lines to low levels which can no longer harm the connected device.

Data networks :

Surge protection in Ethernet/Cheapernet, Token Ring, FDDI/CDDI and INTERBUS

Standard interfaces
Those data transmission systems which have proven themselves over years in information technology are known as standard interfaces

Transceiver systems : Surge arresters for transceiver systems exposed to particular risk.

Telecommunications : Surge arrester for telecommunications terminals