JPS59161163A - Automatic remote supervisory device - Google Patents

Abstract

PURPOSE:To detect easily an abnormality of the whole switchboard by providing a controlling circuit and a receiving circuit on a line leading-in circuit connected to a highway, and supervising remotely and automatically an optional subscriber information independently from the switchboard on the highway. CONSTITUTION:A line leading-in circuit 10 is connected to a switchboard 5 through a highway 8, and multiplexing circuits 8-1-8-n for reconstituting the highway 8 are coupled to leading-in circuits 12-1-12-n by switches 11-1-11-n, respectively. Also, a switch opening and closing signal is supplied to the switches 11-1-11-n of the circuit 10 from a controlling circuit 20 through signal lines 21-1-21-n, respectively. A number of a subscriber terminal which is led in for the purpose of supervision from an input device 40 is supplied to said circuit 20, and basing on a contained time slot information from the switchboard 5, a time slot in the highway to be led in is selected. Subsequently, a subscriber communicating information on the highway 8 selected and extracted by the circuit 10 is received through the circuits 12-1-12-n by a receiving circuit 30, and the subscriber information is supervised remotely and automatically.

Description

TECHNICAL FIELD OF THE INVENTION The present invention relates to a device for remotely and automatically monitoring subscriber communication information on a highway between a concentrator and a digital switching board.

Prior Art and Problems Generally, on the subscriber terminal side of a digital switching network,
A concentrator and multiplexer is installed before the digital exchange. That is, as shown in FIG. 1, a bipolar signal at a bearer speed transmitted from a subscriber terminal 1 for digital data to a subscriber line 6 via a home line termination device f'i, 2 is transmitted to a transmission system device 3. multiplexed at 64Kb8/
After being converted into the 0th order group signal of the s multiplexed signal, it is drawn into the line concentrator multiplexer 4 via the multiplex transmission line 7. The line concentrator/multiplexer 4 performs traffic convergence and multiplexing for channels connected to each subscriber terminal 1 under the control of the central processing unit in the digital exchange 5, and generates 1.544 Mb4t.
/s of PCM primary group is output onto the highway 8 connected to the digital exchange 5.

In such a digital switching network, subscriber communication information is monitored in each section in order to discover faults that occur on the transmission path or within the equipment between subscriber terminals and digital switching equipment (hereinafter simply referred to as "switching equipment") 5. It is often necessary to do so. Traditionally, this has been accomplished by maintenance personnel within the exchange carrying a portable monitoring device and monitoring the subscriber lines 6. Subscriber communication information regarding subscriber channels on the transmission system device 5 or the multiplex transmission path 7 was monitored. However, this conventional monitoring method is limited to monitoring the upstream stage of the concentrator multiplexer where subscriber channels are fixed, and the downstream stage of the concentrator multiplexer where the location of the subscriber channel is changed every time a call is made. There was a problem that monitoring could not be carried out. This becomes an even more serious problem when Highway 8 becomes longer and the probability of failure occurring there cannot be ignored.

On the other hand, the configuration is not such that monitoring of faults on the highway 8 is carried out by the exchange, and there is a problem in that the burden on the software of the exchange 5 increases and the exchange processing capacity decreases accordingly while the monitoring process is being executed. Furthermore, there is also the problem that a program error in both the monitoring process and the exchange process will spread to each other, increasing the risk of 3) conflict.

The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to provide remote and automatic monitoring of arbitrary subscriber communication information independently from the exchange on the highway after the line concentrator and multiplexer. The goal is to provide a monitoring device that can

DESCRIPTION OF THE INVENTION The apparatus of the present invention achieves the above object by providing a line inlet circuit coupled to a highway, a subscriber terminal number designated for monitoring, and an in-highway time slot information received from an exchange. a control circuit that selects a time slot and sends a drive signal to the line lead-in circuit; and a receiver circuit that receives subscriber communication information of the corresponding time slot selectively drawn from the line lead-in circuit. It is configured.

Embodiment of the Invention FIG. 9 is a block diagram of an embodiment of the invention. 1
0 is a line lead-in circuit connected to Highway 8,
Multiplex north circuit (4) composing Highway 8 # 8-1.8-2/8-nwosotLsotL switch
11-1.11-2...11-Outside lead-in lines 12-1, 12-2...12-? Combine with l.

20 is the switch 11-1, 1 in the above-mentioned line lead-in circuit.
Signal wire 21-1゜21 to 1-2 and 11-n respectively
-2...21-W is a control circuit that supplies a switch closing signal via -W. This control circuit receives the number of the subscriber terminal to be pulled in for monitoring from the input device 4, selects the time slot in the highway to be pulled in based on the accommodation time slot information in the highway 8 received from the exchange 5, and further selects the time slot in the highway to be pulled in based on the accommodation time slot information in the highway 8 received from the exchange Based on the synchronization signal received from 5, the switch close signal 1 is sent out. 6D is a receiving circuit that receives subscriber communication information in a time slot on the highway 8 selected for monitoring from the line lead-in circuit 1o through the lead-in lines 12-1, . . . , 12-n.

First, the maintenance personnel inputs the number of the subscriber terminal to be monitored into the control circuit 2o from the input device 40. Upon receiving this, the control circuit 20 requests information on the time slot within the highway 8 currently allocated to the input subscriber number from the communication control device 22 to the exchange 5 via the signal line 26. If the subscriber terminal is currently in communication, the exchange 5 will notify that no time slot has been allocated, and the control circuit 20 that has received this notification will output a display to that effect on the output device 41.

If the subscriber terminal is currently communicating, the exchange 5 transmits information on the accommodation time slot within the highway 8. The control circuit 20 that received this via the communication control device 22 displays the time slot information on the output device 41.
At the same time, the signal lines 21-1...21-91 to which the switch closing signal should be sent are selected, and the switch is closed based on the synchronization signal constantly received from the exchange 5 via the signal line 24. The timing at which the closing signal should be sent out is determined, and the switch closing signal over one time slot width is sent out periodically. As a result, a specified one of the switches 11-1, . Subscriber communication information is periodically received by the receiving circuit 30 via the lead-in lines 12-1 . . . 12-% and displayed on the output device 50.

Maintenance personnel can also simultaneously input the numbers of a plurality of subscriber terminals to be monitored from the input device 40, if necessary. In this case, the above-described operation is performed in a time-division manner corresponding to the number of each subscriber terminal, and the subscriber communication information for each subscriber terminal is simultaneously displayed on the output device 50.

Although the various circuits used in the above embodiments may be newly designed, existing circuits may be used as they are or with slight design changes. For example, as the line lead-in circuit 10, the Research and Practical Application Report, Vol. 61, No.
The line entry circuit described in the paper titled ``Design of Space-Divided Line Access Device for Dedicated Line Test System'', No. 2, can be used for that purpose. Regarding the control circuit 20,
As the communication control device 22, [D10] issued by the Telecommunications Mutual Aid Association
I) described in "Automatic Switchboard (Hardware Edition)"
10C-ITYPAE can be used as is, and the remaining parts (7) can be easily realized with a general-purpose personal computer equipped with a communications interface function. Further, as the receiving circuit 60, a conventional measuring instrument used for monitoring within the I) DX network can be used with some modifications.

The above-described embodiments are merely illustrative examples with slightly simplified configurations to facilitate understanding of the present invention, and specifically, various modifications can be made as necessary. For example, a coded monitoring time slot number is sent from the control device 20 via a single multiplexed signal line, and the receiving circuits 11-1...11-n are selected and closed. The timing of generation may also be determined. In addition, a single multiplexed lead-in line is installed in place of the plurality of lead-in lines 12-1...12-n, and correspondingly, a single multiplexed lead-in line is installed on each side of the line lead-in circuit 10 and the receiving circuit 30. It is also possible to adopt a configuration in which a multiplexer and a demultiplexer are provided. The multiplexing of the signal line and the lead-in line has the practical benefit of reducing the cost of these monitoring lines, especially when the line lead-in circuit 10 is located far away from the control circuit 10 and the receiving circuit 30. be.

Any location on the highway 8 can be selected as the installation location of the line lead-in circuit 10. Furthermore, a plurality of devices can be installed on one highway, and furthermore, a plurality of devices can be installed including on different highways connected to different line multiplexing devices. In this case, a line multiplexing device for the monitoring line may be installed in each of the control device 20 and the receiving U path 30.

Effects of the Invention Since the present invention has the above-described configuration, it is possible to remotely and automatically monitor any subscriber communication information on the highway after the line concentrator and multiplexer, independently from the exchange, and therefore, this single monitoring device can monitor the digital exchange. It has the advantage that it can be an effective means of testing to discover protonyl abnormalities in the entire network or to disconnect lines and various devices in the event of a failure.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the general configuration of a digital switching network to which the present invention is applied, and FIG. 2 is a block diagram showing the configuration of an embodiment of the present invention. 1... subscriber terminal, 2... home line termination device, 3.
. . . Transmission system device, 4 . . . Line multiplexing device, 5 . . . Switching equipment, 8 . Patent applicant Nippon Telegraph and Telephone Public Corporation Patent attorney Gobe Tamamushi (3 others)

Claims (1)

[Claims] A line lead-in circuit connected to a highway connecting a concentrator and switch in a digital switching network, the number of the subscriber terminal to be monitored specified by an input device, and the accommodation time within the highway received from the switch. 1 circuit for selecting a highway time slot to be drawn in based on slot information and sending a drive signal to the line drawing circuit; and (9) the highway time slot selectively drawn from the line drawing circuit. A remote automatic monitoring device characterized by comprising a receiving circuit for receiving subscriber communication information.