ST332B xDSL tester is multi-functional hand-held VDSL2 test instrument with small size, specially designed for xDSL line test (xDSL include: ADSL, ADSL2, ADSL2+, READSL, VDSL2 etc) and maintenance It provides xDSL test, PPPoE dial test, DMM test, Modem emulation, line voltage indication and so on.