JPH0438050A - Fault information transmission system for remote maintenance equipment - Google Patents

Abstract

PURPOSE:To call a maintenance center even when an exchange cannot make dialing due to system-down or the like by installing a remote maintenance equipment independently of the exchange, allowing the remote maintenance equipment to acquire either a trunk line or a subscriber line and connecting the line to the maintenance center. CONSTITUTION:When a system controller 15 sends fault information and a fault detection circuit 29 detects a fault, a control circuit 22 reads a number of a maintenance center to be called at first from a storage circuit 23. The control circuit 22 analyzes a read number and when a line is not a trunk line, it is confirmed that no call comes from a subscriber circuit 2-1 to acquire a subscriber line 11 to send a dial signal. Moreover, in the case of a trunk line, the control circuit 22 discriminates it by a busy state detection circuit 30 that no call comes from the subscriber circuit 2-1 and the trunk line 5 is idle to make dial control. That is, relays 26, 27 are closed to acquire the trunk line 5 and the number is sent to a public telephone network 13 from a line interface circuit 20 via the trunk line 5.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fault information transmission method for a remote maintenance device for a switching equipment, which transmits information to a plurality of maintenance centers via a central office line or a subscriber circuit. .

[Conventional technology]

Conventionally, the configuration was as shown in FIG. In FIG. 4, 1 is a remote maintenance device, 2 is a subscriber circuit, 3 is a network, 4 is a central office line trunk, 5 is a central office line, 6 is a leased line trunk, 7 is a leased line, and 8 is a central processing unit. The operation will be explained below. First, when making a call, the remote maintenance device captures the subscriber circuit 2, dials the number of the other party, and the central processing unit 8 analyzes whether it is a central office line or a dedicated line. The system is such that either the trunk 4 or the private line trunk 6 is captured and calls are made until the maintenance center responds.

Furthermore, when the maintenance center to be called is limited to a central office line, there is also a method in which the central office line is drawn into a remote maintenance device, and the central office line is directly captured and transmitted.

[Problem to be solved by the invention]

In the above-mentioned conventional technology, if a system down failure occurs, transmission cannot be performed. Furthermore, there is a problem in that if there is only one maintenance center to call and that station cannot be connected, information cannot be transmitted.

The object of the present invention is to install a remote maintenance device independently of a switch, and to acquire either the subscriber circuit or the central office line based on the number of the maintenance center where the remote maintenance device is registered, and to make a call using the line that is considered to be the best. In addition, even if the maintenance center of the station cannot be connected, by registering multiple maintenance centers,
The purpose is to call other maintenance centers and transmit information early in the morning.

[Means to solve the problem]

The present invention comprises an exchange and a remote maintenance device installed independently for the exchange, and when the remote maintenance device receives fault information from the exchange, it sends the message to a predetermined maintenance center. This can be accomplished by automatically calling and sending fault information to the maintenance center.

[Effect]

A remote maintenance device is installed independently for the exchange, and when the remote maintenance device receives fault information from the exchange, it calls the maintenance center, and after the maintenance center responds.

Send fault information to that maintenance center. As a result, even if the fault in the exchange is a serious fault such as a system down or power outage, the maintenance center can be immediately called.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a system configuration diagram for explaining the present invention in detail.

In FIG. 1, 3 is a network for setting a communication path;
10 is a remote maintenance device that controls remote maintenance; 4 is a central office line trunk (COT) 2- that interfaces between the public telephone network 13 and the network 3 via the remote maintenance device 10;
1 is a subscriber circuit that interfaces between the remote maintenance device 10 and the network 3; 40 to 43 are maintenance centers; 2-2 is a subscriber circuit that interfaces between the maintenance center 4o and the network 3; 16 is a maintenance terminal .

8 is a central processing unit that controls the entire exchange, 15 is a system control unit that inspects the exchange for faults, etc., and 14 is the exchange (
An input/output device 19 interfaces between the central processing bag N8) and the remote maintenance device 10, and 19 indicates a control system bus of the exchange. Note that the remote maintenance device operates independently of the exchange under the control of the central processing unit 8.

FIG. 2 is a block diagram of the remote maintenance device 10.6 In FIG. 2, 20 is a line interface circuit;
1 is a modulation/demodulation circuit for transmitting and receiving data with the input/output device 14, 22 is a control circuit that controls the entire remote maintenance device 10, 23 is a storage circuit that stores programs, various data, various control information, etc., and 24 is a maintenance terminal. 25 is a modulation/demodulation circuit for transmitting and receiving data to and from the maintenance terminal 16; 26 is a data communication line for connecting the office line 5 to the COT line 12;
or a relay for connecting to the line interface circuit, 27 connects the line interface circuit a2O to station 1iA5
or a relay for connecting to the subscriber line 11; 28 is a relay for connecting the central office line 5 or subscriber m1ll to the line interface line 20 or the modulation/demodulation circuit 21;
29 is a failure detection circuit for detecting failure information received from the system control device 15 via the data line 31;
is a busy detection circuit for detecting the communication status between the office line 5 and the COT line 12.

In the relays 26, 27, and 28, solid lines indicate contacts in an OFF state, and dotted lines indicate contacts in an ON state.

FIG. 3 is a functional diagram when making a call.

In FIG. 3, 40 is the maintenance center to be called first registered in the memory circuit 23 in the remote maintenance device 10, 41 is the maintenance center to be called second, 42 is the maintenance center to be called third, and 43 is the maintenance center to be called third. This is the last maintenance center to call.

Next, the creation will be explained with reference to FIGS. 1 and 2.

First, the numbers of a plurality of maintenance centers are registered from the maintenance terminal 16 to the storage circuit 23 via the modulation/demodulation circuit 25 and the control circuit 22 via the data communication l1I24.

Note that the memory circuit 23 is configured to retain data even if the power supply to the remote maintenance device 10 is cut off.

When remote maintenance device 1o is in standby state, relay 26.2
7.28 is in the off state, and the station line 5 passes through relay 26 to C
Connected to the OT line 12 and connected to the line interface circuit 20
is connected to subscriber line 11 through relays 27 and 28. Here, the system control device 15 sends fault information,
When the fault detection circuit 29 detects a fault, the control circuit 22 reads from the memory circuit 23 the number of the maintenance center to be called first. The control circuit 22 analyzes the read number, and if it is not a central office line, confirms that there is no call from the subscriber circuit 2-1, captures the subscriber line 11, and sends out a dial.

When the exchange receives the dial, it makes a call to the maintenance center 4o via the subscriber circuit 2-2, for example, in accordance with the dial. In addition, if it is a central line, the control circuit 22
The busy detection circuit 30 determines that there is no call from the subscriber circuit 2-1 and the central office line 5 is in an empty state, and performs call control. That is, the relays 26 and 27 are turned on, the station 1i5 is captured, and the number is sent to the line interface circuit 20.
from there to the public telephone network 13 via station vA5.

FIG. 3 shows the operation when the maintenance center is unable to communicate. The number of the maintenance center 40 to be called first is sent from the memory circuit 23 and the maintenance center 40 is called. If communication is not possible because the maintenance center 40 is busy, the line is disconnected, or the connection is cut off before sending information even after responding,
Remote maintenance device】.

0 reads the next maintenance center 41 to be called from the memory circuit 23 after calling the maintenance center 40 several times or after a predetermined period of time has elapsed, and connects to that maintenance center 41 to enable maintenance. Note that if the maintenance center 41 is also not connected, the next maintenance center to be called is stored in the memory circuit 23.
The number of the maintenance center 40 is read from the memory circuit 23 again, and if the last maintenance center 43 is called several times and is not connected, the number of the maintenance center 40 is read out from the memory circuit 23 again. This process is repeated until the response and information transmission to one station F2 of the registered maintenance center is completed.

Further, when the remote maintenance device 10 receives a call from the maintenance centers 40 to 43 via the subscriber circuit 21.

In response, a connection is made to the input/output device 14 to enable maintenance of the exchange from a maintenance center.

As described above, the remote maintenance device makes it possible to make two calls to the subscriber line and the central office line, and also enables early information transmission by calling a plurality of maintenance centers.

[Effects of the Invention] According to the present invention, the remote maintenance device is installed independently of the exchange, and the remote maintenance device captures either the office line or the subscriber line and connects it to the maintenance center. The maintenance center can be called even if the exchange is unable to make calls due to downtime or the like. Further, by registering the numbers of multiple maintenance centers and calling the maintenance centers until the information can be transmitted, it is possible to transmit information at an early stage.

[Brief explanation of the drawing]

FIG. 1 is a system configuration diagram of an embodiment of the present invention, FIG. 2 is a block diagram of the remote maintenance device of the present invention, and FIG. 3 is a functional diagram of the remote maintenance device of the present invention at the time of transmission. FIG. 4 is a system configuration diagram showing an example of the prior art. 0... Remote maintenance device, - Line interface circuit, - Control circuit, 23... Memory circuit. 27.28...Relay...fault inspection circuit. 2゜26, Birei Figure 3

Claims (1)

[Scope of Claims] 1. Consists of an exchange and a remote maintenance device installed independently for the exchange, and when the remote maintenance device receives failure information from the exchange, A failure information transmission method for a remote maintenance device characterized by automatically calling a maintenance center and transmitting failure information to the maintenance center. 2. The failure information transmission method for a remote maintenance device according to claim 1, wherein a plurality of maintenance centers are registered in the remote maintenance device, and the plurality of maintenance centers are sequentially called until the maintenance center responds.