If you do not hear sound, try to go off hook. You will either hear a dial tone or the butt set will trigger the data alert signal which means one of two things. Either data is present or the line is imbalanced and the noise resembles data. A noise from an imbalanced pair can cause false data alerts. If using a TS22ALO or TS22A, use in monitor mode to trace tone from a tone generator.
Line cords are usually several feet long and are easily stored by wrapping around the test set.
The TS22ALO, TS22A and TS22 have a unique feature. A switch that will mute the transmitter momentarily or will lock for extended periods of time. To use the TS22A with a voice response system, such as SASS or the DATU, the mute switch must be locked. If your mute switch will not lock, it could be that when you changed batteries, you did not tighten the case screws enough. Check to make sure the battery case screws in your handle are tightened.