Amazon.com: Two Way Telephone Splitters, Uvital Male to 2 Female Converter Cable RJ11 6P4C Telephone Wall Adaptor and Separator for Landline (White, 2 Pack) : Electronics
Kab24®Telefon Y-Adapter 1 x TAE-F Stecker auf 2 x TAE-F Kupplung (Kommunikation) - kab24.de
Telefon Y-Adapter-TAE F-Stecker an 2 TAEF-Kupplungen 0,2m Weiche Splitter 1:2 ♥ | eBay
ankishi Computer Headset to Telephone Headset Dual 3.5MM to RJ9 Crystal Head Headphone Converter Connector Conversion Cable Jack Adapter Convertor for PC Headset Telephone - Walmart.com
Amazon.com: Anker 3.5mm Audio Adapter with Lightning Connector, MFi Certified Lightning to Female 3.5mm Dongle, Supports Volume Control and Mic for Headphones, Earphones, Earbuds, and More. : Electronics
Amazon.com: Uvital RJ11 Duplex Wall Jack Adapter Dual Phone Line Splitter Wall Jack Plug 1 to 2 Modular Converter Adapter for Office Home ADSL DSL Fax Model Cordless Phone System, White(4 Packs) :