... is a handheld ADSL/ADSL2/ADSL2+ line test and analysis instrument, whichcan test physical layer, network layer and application layer ... Ping testingCable testing- Digital Multi Meter, DMM is used to test loop resistance, insulation resistance, capacitance, AC/DC voltage and ... line sends audio signal, the other end identifies the current tested line by the tracer. Applications:Specifications: xDSL ...