Amazon.com: Xsusmdom [2-Pack] Phone Jack to Ethernet Adapter, Ethernet to Phone Line Adapter RJ45 Female to RJ11 Male Converter Adapter Cable for Landline Telephone Service : Electronics
Phone Jack Splitter for Landline Telephone RJ11 6P4C 2 Way Adapter (1 Splitter + 3 Inch Cable) - Newegg.com
Converter Adapter | Converts RJ-9 to 2.5mm for phones that have a 2.5mm jack., (2200-11095-002) | Use with APP-50, APP-51 EHS for Polycom, Connecting telephone devices to 2.5mm headset mini jack
1/4 in TRS to Right-angle 3.5 mm TRS - Headphone Adapter | Hosa Cables
Power Gear 5-Way 4-Conductor Phone Splitter - White 76131 - The Home Depot
3.5 mm TRRS to Slim 3.5 mm TRRS - Headphone Adapter | Hosa Cables
Surface Mount Phone Jack - Modular Dual Jack - Quality Sound - WORKS g - USA Trading Depot, LLC
Duplex Jack Phone Wall Adapter - 2 Pack, White - 2-Way Phone Splitter – THE CIMPLE CO
Amazon.com: 2 PCS RJ11 Double Telephone Jack Splitter and Adapter,Telephone Line Splitter,Telephone Line Adapter Plug 1 to 2 in Jack,Phone Jack Splitter for ADSL Fax Model Cordless Phone System 4-Conductor : Electronics
Rj11 6p4c 2 Way Outlet Telephone Jack Line Splitter Adapter Beige - Telephone Cords - AliExpress
Amazon.com: Headphone Earpiece Jack Adapter Cable for Cordless Phones: 2.5mm Male to 3.5mm Female (for Smartphone Headphone) Cordless Phone Hands-Free Headset Adapter : Electronics
5 Outlet Modular Phone Jack Telephone Line Adapter Splitter Cables DSL Modem NEW, 1 - Metro Market
RJ45 to RJ11 Cable, 6 Feet Phone Jack to Ethernet Adapter RJ11 6P4C Male to RJ45 313107765728 | eBay