4 cores of 2 pairs telephone cable 1.Telephone cable 2.Copper 0.4,0.5,0.65,0.7mm ... 3.UL CE ROSH compliant 4 cores of 2 pairs telephone cable Telephone cable 4CDescription: Indoor use, parallel, 2-coreStandards: ISO/IEC 11801, ANSI ... other horizontal cabling, supporting TP-PMD Audio, integrated service digital network(ISDN), ATM 155 Mbps, 100Mbps TPDDI, Fast Ethernet, etc.Specification ...