The Z-300TJ is a small in-line filter designed to expedite the service delivery and improve the performance of digital subscriber line (DSL) services. This model filters all telephone sets, facsimile machines, answering machines, etc. individually or in groups. It also provides a second convenience jack that is unfiltered for connecting DSL. This in-line DSL filter design electronically isolates the high-speed DSL data streams from the voice band plain old telephone service (POTS) equipment. This design effectively blocks the DSL, and other radio frequencies from 25 kilohertz to 30 Megahertz.
Data Protection - Isolates telephone impedances changes from DSL equipment
Excellent DSL band attenuation that protects voice band equipment and prevents intermodulation distortion from degrading data rates
Compatible with all major DSL standards including ADSL, ADSL2+, VDSL, and VDSL2
Voice Protection - Isolates DSL band
frequencies from voice band equipment
Excellent longitudinal balance
Compatible with Caller ID, facsimile and metallic loop testing