Check the listing for details. DSL ADSL FILTER [DCE/DSL-FILTER]. Condition: New. Listed at 4.88 USD. Single Phone Line, Single Jack In-line ADSL Filters are designed for use at the subscriber premise. ADSL represents Asymmetrical Digital Subscriber Line, which provides high bit-rate digital information over telephone subscriber lines. The DSL filter is a passive device, which allows only voice signals to pass through to the subscriber’s phone, answering or fax machine and other analog devices. The DSL Filter easily plugs into any telephone wall jack inside the subscriber’s premise. No tools or wire terminations are required.FeaturesDSL Filter Plugs into any telephone wall jack inside the premise which allows for greater flexibilityCustomer installed – no truck roll or craftsman requiredNo tools required for installationSmall form factorOperating temperatures 32 °F to 185 °F ( 35 °C to 85 °C )Complies with requirements (According to ISTA PROJECT 2A)UL 1950RoHS Compliant Applications Specifications Post Port lmedance Zr:6000 Modem impedance 30kHz to 2208 kHz 100Ü Insertion loss @1004 Hz