Now that analogue telephone technology is increasingly becoming a thing of past, metallic telephone cables (with many twisted wire pairs) are used for data and internet transmission, providing an alternative transmission channel to today's overloaded wireless data networks.
However, as the demands on the volume and speed of data transmission have increased geometrically over time, the originally simple ADSL and VDSL transmission systems have had to be replaced by more topical, but also more data-intensive, higher-generation systems (ADSL2, VDSL2, VDSL2+, etc.).
The increased technical requirements for the transmission channel must therefore be taken into account when using surge protection devices on these lines. For this reason, SALTEK is launching newly designed surge protection mechanisms for the most modern xDSL formats.
For lines that can still carry the last analogue telephone line, but at the same time already offer digital data transmission, the DL-TLF-UHF model with Uc=170V is the essential choice.
For modern lines lead out from digital DSLAMs without analogue operation, we have developed a special version of the DL-VDSL3 surge protector (with Uc=60V) that meets the most demanding requirements in the high-frequency range, while impairing the operation of the xDSL2+ transmission line as little as possible (bandwidth up to 300 MHz, attenuation in the operating range of <0.2dB, etc.).
The new surge protection devices are designed for location class ST1+2+3, i.e. they can be used both at the cable entrance into the building and in the vicinity of the DSL modem or splitter.
