Rugged and accurate, the 1401e time domain reflectometer serves as an easy-to-use test set for finding faults in telephone cable and DSL lines. It checks for shorts, crosses, opens, high-resistance ...

I need a little help. I am looking for a tool\\utility that will allow me to test for busy signal on phone line and then email/txt me that the line is busy. I would like for it to run on a ...