Protect your phone lines with the APC PTEL2 ProtectNet Standalone Surge Protector for Analog/DSL Phone Lines. This device provides advanced surge protection against damaging power transients travelling over computer, network, and AV data lines, and helps to prevent damage to your equipment from electric power surges and spikes. This surge protector also protects your data lines, including phone lines, coaxial lines, and Ethernet lines, to ensure complete protection of your equipment from surges.