JPS61163765A - Remote controlling system of line terminating equipment - Google Patents

Abstract

PURPOSE:To shorten the time required for being switched to a line test control state, and to execute exactly an operation of a line terminating equipment by switching a line to be tested to a subscriber line testing device in a state that a control information signal to the line terminating device has been sent out, from the testing device concerned, and simultaneously, switching remotely the line terminating equipment to a testing state. CONSTITUTION:A testing device is provided with a control line 7 for sending a control information signal to a line terminating equipment, an information line 8 which can send out a test signal corresponding to a test item to a line to be tested 3, and a control line 6 for controlling a contact 10 and switching the line to be tested 3 to a testing state, and when executing a line test, a switching signal is applied to a subscriber line terminal station device 4 from the control line 6, in a state that a control information signal to be sent out to a line terminating equipment 2 has been applied to te control line 7, the contact 10 is switched, and the device becomes a testing state. The time when the line terminating equipment 2 is switched to a control information signal from a subscriber line testing device 5, from a control information signal from a switchboard 11 is only an operation time of the contact 11, and this switching is executed to an extremely high speed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a remote control system for a line termination device when switching a line under test to a test control state in a remote test of a subscriber line.

During a line test, the line under test is connected to the test equipment, and a circuit is created to loop back the line termination equipment on the subscriber side to the station, and the line is switched from the normal control state to the test control state. At this time, it is desirable to have a remote control system for the line termination device in which state switching does not cause malfunction of the line termination device.

[Conventional technology]

Conventionally, in subscriber line testing, testers are placed on both the subscriber side and the central office side, and they consult with each other to prepare the test line conditions and carry out the test work.

In addition, in a conventional subscriber line remote test control method, when switching from a normal subscriber line control state to a state in which test control is possible, the line connection is manually changed, and the line is not controlled until the switch is completed. A method is used in which an information signal is sent to the line termination device of the line under test. At this time, the test equipment is also manually reconnected each time according to the test items.

[Problem that the invention seeks to solve]

The conventional method described above switches the line and then connects the control information signal to control the line termination device, so it takes time to supply the control information signal and there is a period when the control information signal is disconnected. It will be relatively long.

In the normal state, subscriber equipment receives control information signals from the exchange, but when switching to the test state, it is disconnected from the exchange, so the time from disconnection until the subscriber line test equipment gives control information signals is If the time is long, the subscriber equipment may malfunction.

[Means for solving problems]

The above problem was solved by switching the line under test to the test equipment while sending a control information signal from the subscriber line testing equipment to the line terminating equipment, and at the same time remotely switching the line terminating equipment to the testing state. This problem is solved by the line termination device remote control method according to the present invention.

[Effect]

In the remote control system of the present invention, the subscriber test device is installed on the station side, switching to the test control state is performed only from the station side, and the line control information signal is sent at the same time as the switching contact is switched. Therefore, the instantaneous interruption of the control information signal occurs only during the switching of the contacts, and the risk of malfunction of the line termination device can be avoided.

〔Example〕

The gist of the present invention will be explained in detail below according to the illustrated embodiments.

The figure shows the system configuration of the line termination device remote control method.

In the figure, 1 is a terminal device, 2 is a line termination device, 3 is a line under test, 4 is a subscriber line terminal station device, 5 is a subscriber line test device, 6 and 7 are control lines, 8 is an information line, and 9 1 is a loopback connection of the line under test, 10 is a switching contact, and 11 is an exchange.

The terminal device 1 and the subscriber line termination device 2 are located on the subscriber side, and the subscriber line terminal device 4, the subscriber line testing device 5, the exchange 11, etc. are installed on the central office side.

The line under test 3 connects between the devices 2 and 4, and is connected to the exchange via the contact 10 under normal line conditions.

The exchange 11 sends a line control information signal to the subscriber line terminal device 2 via the subscriber terminal device 4 on a control line.

The test device provided on the station side according to the present invention includes a control line 7 that sends a control information signal to a line termination device, an information line 8 that can send a test signal according to the test item to the line under test 3, and a contact point 10.
A control line 6 is provided to control the line 3 under test and switch the line 3 under test to a test state.

When performing a line test, a switching signal is applied from the control line 6 to the subscriber line terminal equipment 4 while the control information signal to be sent to the line termination equipment 2 is applied to the control line 7. 10 is switched to enter the test state.

The time during which the line termination device 2 switches from the control information signal from the exchange 11 to the control information signal from the subscriber line testing device 5 is only the operating time of the contact 10, and the switching is done extremely quickly.

〔Effect of the invention〕

As described above, according to the present invention, the subscriber line test can be executed only from the station side, the time required to switch to the line test control state is shortened, and the operation of the line termination device is ensured. It is extremely large.

[Brief explanation of the drawing]

The figure shows an embodiment of a line termination device remote control system, and shows a system configuration diagram. In the figure, ■ is a terminal device, 2 is a line termination device, 3 is a line under test, 4 is a subscriber line terminal station device, 5 is a subscriber line test device, 6 and 7 are control lines, 8 is an information line, 9 is the return connection of the line under test, 10 is the switching contact, and 11 is the exchange.

Claims (1)

[Claims] A line terminating device characterized in that the line under test is switched to the test device while a control information signal is sent from the subscriber line test device to the line terminating device, and at the same time the line terminating device is remotely switched to the test state. Remote control method.