About Telephone Cable our factory supply Flat Telephone Cable and Round Telephone Cable,4 Core Telephone Cable as well as 8 Cores Telephone Cable, you can use 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). It is good to long-distance communication for your desk phone or office phone .Extended length coiled cord is provided Extra Length for working in the office or at home.