Key features

• •This extension cord can be used from wall phone line to a telephone. Male RJ11 to male RJ11 telephone cables are used for standard RJ11 phones.For use with telephones, fax machines, modems, answering machines, etc.Not work as a Ethernet Cable (Example: internet box to xbox)
• •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
• •The 16ft 6P4C telephone cord is not applies to VOIP phone and Cat 5 UTP cable which typically used for Ethernet with a 8P8C (RJ45) plug. This phone cable has standard phone connectors RJ11 on both ends
• •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
• •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