RJ11-RJ11 2 meters Line Cord 6P4C Retail Pack You can use from wall phone line to a telephone. Male RJ11 to male RJ11 telephone cable is used for standard RJ11 phones. For use with telephones, fax machines, modems, answering machines, etc. The telephone wire is good for long-distance communication for your desk phone or office phone. Extended length phone line cord is provided extra length for working in the office or at home This phone cable is standard RJ11 plug for use with landline telephones, fax machines, dial-up modems, etc. Universally compatible this phone cord extension RJ11 cable with all telephones manufacturers including AT&T, Cisco, NEC, Rolm, ITT, & Tie. You can use them as replacements for those and Avaya 5420 and 5610SW IP phones This landline cord is designed for use with both business and home telephone systems, will work with 1 or 2 line phones. Connect two phone devices together or connect a phone to a wall jack