RJ11 6P6C Modular Jack Network Male Plugs, 6 Pin, Telephone Connector – electrical center b2c
Klein Tools Modular Telephone Plugs RJ11 6P6C, 25-Pack VDV826-600 - The Home Depot
OEM 6-Pin Marine Display Cable - 10 ft to 100 ft
Amazon.com: 5 Feet RJ11 / RJ12 Data Cable - Heavy Duty 6-Pins High-Speed Extension for Cash Register Drawer, Telephone, Modem, Fax, Printers, and More - Drawer Cable for Voice and Data : Electronics