Yohii 6Pcs 10ft Telephone Cord Cable with RJ11 6P4C Plugs for Landline Phone

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 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.