A.WAN B.LAN C.MAN D.GAN
A. ANSI/TIA/EIA-568-B B. ISO/IEC 11801:2002 C. T568B D. ANSI/TIA/EIA-568-B 和ISO/IEC 11801:2002
A. GB/T50311-2000 B. GB/T50312-2000 C. CECS 89:97 D. YD/T 926.1~3-1997