APPARATUS FOR TESTING CALL OF SUBSCRIBER CIRCUIT AND LINE JIG

摘要

PURPOSE: A call testing apparatus of a subscriber circuit and a ling jig is provided to correct an error in an operation possibly occurring due to a difference between an operation for testing and an actual operation by providing the same environment as that of a full electronic telephone exchange to a testing jig without physically connecting a transmission/receiving line of the first channel and the second channel to a jumper or a line. CONSTITUTION: A tester phone set(200) tests a subscriber circuit and a line telephone communication. A subscriber circuit and line testing unit(210) has two channels to provide a testing channel. The first channel(212) is connectable to the tester phone set(200), an actual patchboard phone set(230) or a subscriber phone set(240) to be tested according to set-up and has a transmission time slot and a reception time slot to provide a path for a call. The second channel(214) has a transmission time slot and a reception time slot to connect them to the first channel(212). A switching unit(220) switches a transmitting and receiving path to connect a call between the actual patchboard phone set(230) or the subscriber phone set(240) to be tested to a tester phone set(200). An actual patchboard phone set(230) connects a protector frame for providing a line from the subscriber phone set to the switching system, to the switching system. The subscriber phone set (240) is switched by the switching unit(220) through the first channel(212) and the second channel(214) and connected to the tester phone set(200).