Flat telephone cable 4 cores 1.Telephone cable , 2.Copper 0.4,0.5,0. ... optional 3.UL CE ROSH compliant Flat telephone cable 4 cores Description: Indoor use, parallel, 2-coreStandards: ISO/IEC 11801, ANSI ... -core parallel, HBYV-J twisted pair. Flat telephone cable 4 cores