Amazon.com: Phone Jack Splitter, in-line DSL Splitter Filter for Phone Line (1 Pcs) : Electronics
Antfly 3 PCS 2 Wire, 1 Line DSL Filter, with Built in Splitter, Phone Jack Splitter,
Amazon.com: THE CIMPLE CO 2 Wire, 1 Line DSL Filter, with Built in Splitter - for Removing Noise and Other Problems from DSL Related Phone Lines : Automotive
RCA TP7410R DSL Phone Line Filter - Micro Center
Jasco Flat Rj11 Phone Cable in the Phone Cable department at Lowes.com