APC ProtectNet Standalone Surge Protector for Analog/
SKU# AA81633, Model# PTEL2

APC ProtectNet Standalone Surge Protector for Analog/DSL Phone Lines, 2 Lines, 4 Wires (PTEL2)

Manufacturer Contact Info: http://www.apc.com/, 1800 652 725

Data line surges make up an overwhelming majority of all surge induced damages where the equipment was thought to be already protected but had a "back door" such as a modem line unprotected. Network interface cards, in particular, can be destroyed by relatively mild spikes. According to Ethernet standards (IEEE 802.3), non-AC network electrical hazards include: direct contact between components and power or lightning circuits, static charge buildup on cables and component, high-energy transients coupled onto the local cabling system (those induced by other cables which are installed in the general proximity of network cables or lightning within a mile radius) and potential differences (even from building to building, between safety grounds to which components are connected.)