... with voice,can Test RJ45 and RJ11 network cables 2.Test correspondingly double-twisted cables 1, 2, 3, 4, 5, 6, 7, 8 ... and Ground 3.Test RJ45 and RJ11 network cables4.Test correspondingly double-twisted cables 1, 2, 3, 4, 5, 6, 7 ... .Can judge wrong connection, short circuit adm open circuit6.Put cables into both main tester and remote tester. The lights of ...