Test Sockets
Yamaichi Electronics Co., Ltd. (Yamaichi)
A test socket is the ideal point to test your home’s internal phone wiring for faults. You can also use it to identify any potential faults with the phone line outside. Your test socket is located in your master socket. It is the point between the internal phone wiring in your house and the phone line outside. That means by plugging into your test socket you can bypass all the internal wiring and test your device directly on the phone line.