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Product Features and Technical Details2Wire 1-Line inline DSL filter with a give back jack allows DSL subscribers touse a HPNA device or DSL modem with their existing telephone (POTS) device, (suchas fax machines, answering machines, and analog modems), at the same time. The1-line inline filter installs easily between phone jack and telephone device. Oncethe filter is installed, telephone devices will be completely isolated from the DSL frequency spectrum resulting in clear phone service.Eliminate InterferenceEnsures optimized DSL connections and "total isolation" of analog noise, interference and modem errors.CompatibleComplies with G.lite ADSL, Full-Rate G.dmt, final T1/E1 specification and HPNA version 1.0 and 2.0 technologies.Connect Multiple FiltersSupports up to five (5) phone filters without any degradation in line quality.Technical Specifications * Use one filter for each telephone device. * Complies with Full Rate G.dmt (G.992.1) and G.lite (G992.2) ADSL. * Complies with the final T1/E1 specification. * Stop band rejection greater than 25 dB beyond 50kHz. * Pass band insertion loss is less than 1.5 dB through 4 kHz. * Complies with HPNA 1.0 and 2.0 specification.