Steren 300-124IV Ivory Telephone Adapter Tee 3 Male Jack to 1 Female Plug RJ11 4C 3-Way Line Splitter Triplex Telephone 2 Line Device Tap Jack Snap-In Converter, Single Pack, Part # 300124-IV
Allows you to plug three modular devices into one jack (phone, fax, modem, etc.) If you have two phone lines coming into one wall jack, both will be available to all three. Line 1, line 1, and line 1 or Line one/two, line one/two, and line one/two.