IDEAL 25-Pack Phone Cable Rj11 Modular Plug in the Voice & Data Connectors department at Lowes.com
Amazon.com: THE CIMPLE CO Phone Line Cord 25 Feet - Modular Telephone Extension Cord 25 Feet - 2 Conductor (2 pin, 1 line) Cable - Works Great with FAX, AIO, and Other Machines - Ivory : Electronics