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)

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

The 6.5ft 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 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. 

Conductor: copper

Wire diameter: 0.4 copper(single)

Size: any meters (plus or minus two percent)

Line core: 4 root

Insulation: HDPE

Wire shield: PVC

Single insulated wire according to the different pitch twisted pair, and with specified color combinations to identify line, reduce the mutual interference between the clues crosstalk, power consumption is small.

It is a ideal phone accessories, and can connect your phone with a RJ11 connection to another RJ11 devices. Easy to install for the home, hotel, office and other telephone systems.

The phone wire can be used with 2 or 4 wire systems. The cord has a variety of possible uses, such as connecting two telephones devices together, connecting a telephone device to a wall jack, or as an extension cord.

Scope of application:

Telecommunication engineering wiring, links between indoor telephone communication cable system wiring, voice communication system between the main line, program-controlled switches, phone, fax and digital television.