JPH01157147A - System for monitoring line switching equipment - Google Patents

Abstract

PURPOSE:To perform the monitoring of the state of a line switching equipment by a general subscriber terminal outside the line switching equipment by connecting a false subscriber line to a specific line for collecting monitor information in advance. CONSTITUTION:To a speech path network 1, the general subscriber terminal 3, the false subscriber line 4 receivable an incoming call from the terminal 3, and the specific line 5 to collect the monitor information from a controller 2 via the speech path network 1 are connected, and the line 4 is connected to the line 5 in advance. Since the line 5 can monitor the state of a system, when the terminal 3 issues a call to the line 4 and a confirmation signal is sent from the line 4, the terminal 3 is set at a state available to communicate with the line 4. Thus,it is possible to monitor the state of the system by the general subscriber terminal.

Description

[Detailed Description of the Invention] [Summary] Regarding a circuit switching system monitoring system, the purpose of this invention is to make it possible to monitor the status of a circuit switching system from a general subscriber terminal outside the circuit switching system. In a line exchange equipped with a control device, the communication path network includes a general subscriber terminal, a pseudo subscriber line that can receive calls from the general subscriber terminal, and maintenance information from the control device is transferred to the communication path. A special line collected through the network is connected, the pseudo subscriber line and the special line are connected in advance, and the general subscriber terminal receives a response signal of a call to the pseudo subscriber line. is received as a confirmation signal from the pseudo subscriber line, and then communication with the special line is performed via the pseudo subscriber line, thereby collecting monitoring information from the control device.

[Industrial application field]

The present invention relates to a system for monitoring line exchanges such as a telex exchange from outside the line exchange room. This invention relates to a monitoring method that makes it possible to monitor the status of a line exchange by incoming calls to a pseudo subscriber terminal.

Generally, when maintenance personnel are not present in the switching room, it may be necessary to monitor the system status of the switching equipment from outside the switching room. Furthermore, there are cases in which manufacturers in Japan need to monitor the status of systems such as telex exchanges installed overseas.

[Conventional technology]

Conventional monitoring of line exchanges such as telex exchanges was performed only within the exchange room, and there was no means for monitoring the system from outside the exchange room, especially from a remote location.

[Problem that the invention seeks to solve]

According to the above-mentioned conventional technology, in order to monitor the circuit switching equipment system, maintenance personnel must always be present in the switching room.
There is a problem in that it is inconvenient because it is impossible to check the status of the system when maintenance personnel are absent. In particular, when a circuit switch is installed overseas such as in Africa,
The problem is that the status of the system cannot be confirmed in Japan, and instructions are given to local maintenance personnel one by one from Japan and the results are returned to them, resulting in a large loss of time.

An object of the present invention is to make it possible to monitor the status of a line exchange from a general subscriber terminal outside the line exchange.

[Means for solving problems]

FIG. 1 is a block diagram of the principle of a circuit switching system monitoring system according to the present invention.

In the same figure, a communication path network 1 and a control device 2 that controls this are shown.
A circuit switch with a In the communication route network 1,
A general subscriber terminal 3 is connected to a pseudo subscriber line 4 that can receive calls from the -i subscriber terminal 3, and a special line 5 that collects monitoring information from the control device 2 via a communication network l. . The pseudo subscriber line 4 and the special line 5 are connected in advance. - After the general subscriber terminal 3 receives a response signal for the call to the pseudo subscriber line 4 as a confirmation signal from the pseudo subscriber line 4, it communicates with the special line 5 via the pseudo subscriber line 4. Accordingly, monitoring information from the control device 2 is collected.

[For production]

Although the general subscriber terminal 3 cannot directly collect the system status, it can make a call to the pseudo subscriber line 4. The pseudo subscriber line 4 is connected in advance to the special line 5, and since the special line 5 can monitor the system status, the general subscriber terminal 3 makes a call to the pseudo subscriber line 4, and the pseudo subscriber When the confirmation signal is sent from the line 4, the general subscriber terminal 3 becomes able to communicate with the special line 5. Thus, the status of the system can be monitored from the general subscriber terminal.

〔Example〕

FIG. 2 is a diagram showing a signal sequence in a line exchange monitoring system according to an embodiment of the present invention, and FIG. 3 is a flowchart showing the flow of processing according to an embodiment of the present invention.

Referring to FIGS. 2 and 3, a case will be described in which the originating terminal 23 monitors the status of the telex exchange 21.

When the telex exchange 21 receives the calling signal CL'L from the calling terminal 23, which is a general subscriber terminal (step 31), it transmits a selection start signal PTS to the calling terminal 23 (step 32), and then receives a call from the calling terminal 23 (step 32). The receiving terminal selection signal SS is received (step 33). The telex exchange 21 analyzes the selection signal SS to select the called subscriber terminal (step 34), and if the selection signal SS specifies a pseudo subscriber terminal, sends the call to the pseudo subscriber terminal 24 via the general line 25. and transmits a calling signal CLL (step 35).

Then, the calling signal CLL is returned from the pseudo subscriber terminal 24 to the same telex exchange 21 via the special line 26, and the selection start signal PTS is sent from the telex exchange 21 to the pseudo subscriber terminal 24 via the special line 26. . The pseudo subscriber terminal 24 sends a connection completion signal CC in response to the PTS.
3 is sent to the telex exchange 21 via the general line 25, and the telex exchange 21 receives it (step 3).
6).

Next, the telex exchange 21 transmits a connection completion signal CC3 to the originating terminal 23 (step 37). Thereafter, communication becomes possible between the calling terminal 23 and the telex exchange 21 (step 41).

When the telex exchange 21 analyzes the selection signal SS from the calling terminal 23 (step 38) and determines that the called terminal is not the pseudo subscriber terminal 24, it sends a WRU (Who Are You) to the called subscriber? Then, step 39), the answer back signal A/B is received from the called terminal (step 40), and then the communication state is established (step 41).

In communication after a call is made to the pseudo subscriber terminal 24, the calling terminal 23 transmits a system monitoring special number,
This confirmation signal CID is returned from the telex exchange 21 to the originating terminal 23. Next, by sending a system monitoring command from the originating terminal 23 to the telex exchange, system status information is sent from the exchange to the originating terminal 23. In this way, it becomes possible to collect monitoring information at the originating terminal 23, which is a general subscriber terminal far away from the telex exchange 21.

To end the call, the calling terminal 23 sends a recovery signal CLR to the telex exchange [21] via the special line 26, and a recovery confirmation signal CLR-CFM from the telex exchange 21 is sent via the special line 26 and the pseudo subscriber line 25. The recovery confirmation signal CLR-CF is received by the telex exchange 21 and then sent from the telex exchange 21 to the originating terminal 23.
M is sent and completed.

FIG. 4 is a block diagram showing a telex exchange according to an embodiment of the present invention.

In this figure, parts that are the same as those in the system shown in FIG. 2 are given the same reference numerals. In the figure, it is assumed that the telex exchange 21 is installed at a remote location from the originating terminal 23.In other words, it is assumed that the telex exchange 21 is installed at a remote location from the originating terminal 23.In other words, the telex exchange 21 is installed at a remote location outside the exchange as a command input terminal for system monitoring. A terminal is used. This calling terminal 23 is
The terminal is assumed to be able to make call connections with other general subscriber terminals accommodated in the exchange 21 to be monitored. Therefore, not only the subscriber terminal 231 accommodated in the exchange 21 to be monitored, but even the subscriber terminal 23 located overseas when viewed from the exchange 21 can be used as a command input terminal for monitoring.

The telex exchange 21 has a circuit termination unit (CTUC) 2
10, Communication system 1 unit W (CCU) 221, Common bus multiplexer (CBM) 212, Central control unit (CC
) 313, a main memory (MM) 214, and the like.

Note that 213 indicates a relay exchange.

The pseudo subscriber line 24 connected to the line termination unit (CTUC) 210 is one of the general lines, and the special line 25
is established for compiling monitoring information.

The pseudo subscriber line 24 and the special line 25 are connected to the distribution rack (D
F) connected at 215.

Conventionally, within the exchange 21, it has been possible to monitor the status of the system by calling a special line by specifying a special number from a certain terminal.

However, even if you specify a special number from outside the exchange, the relay exchange
32 etc. cannot correctly analyze this special number, so calls cannot be received on the special line.

In the embodiment of the present invention, a selection signal SS for calling the pseudo subscriber terminal 24 is transmitted from the originating terminal 23. This selection signal SS is one of the general subscriber numbers (third
(See step 33 in the figure). Then, after entering the communication state, a special number is transmitted to use the special line 25. By using this special sequence, it is possible to prevent general subscribers from accidentally connecting to the special line. In other words, even if connected to a pseudo subscriber terminal, it is impossible to use the special line unless a special number is sent. After the originating terminal 23 is connected to the special line 26, by inputting a system monitoring command, the system status stored in the main memory 214 is sent to the originating terminal 23 and printed or displayed.

〔Effect of the invention〕

As explained above, according to the present invention, by connecting a pseudo subscriber line and a special line for collecting monitoring information in advance in a line exchange, the system state of the line exchange can be accessed from a general subscriber terminal outside the line exchange. Since the system status of the line exchange can be monitored from a remote location, the system status of the line exchange can be monitored from a remote location without having maintenance personnel stationed in the line exchange room.

[Brief explanation of the drawing]

FIG. 1 is a principle block diagram of the circuit switching system monitoring method according to the present invention, FIG. 2 is a diagram showing a signal sequence in the circuit switching system monitoring system according to the embodiment of the present invention, and FIG. 3 is a processing diagram according to the embodiment of the present invention. FIG. 4 is a block diagram showing a telex exchange according to an embodiment of the present invention. In FIG. 4, 21 is a telex exchange, 23 is a general subscriber terminal, 24 is a pseudo subscriber line, and 25 is a special line.

Claims (1)

[Claims] 1. In a line exchange equipped with a communication network (1) and a control device (2) for controlling the network, the communication network (1) includes a general subscriber terminal (3), A pseudo subscriber line (4) that can receive calls from the general subscriber terminal (3)
), and the monitoring information from the control device (2) is sent to the communication path network (
1) is connected to the special line (5) to be collected via the general subscriber terminal (3), the pseudo subscriber line (4) and the special line (5) are connected in advance, and the general subscriber terminal (3) receives a response signal for a call to the pseudo subscriber line (4) from the pseudo subscriber line (4) as a confirmation signal, and then transfers communication with the special line (5) to the pseudo subscriber line (4). ).
A monitoring method for a line exchange, characterized in that monitoring information from the control device (2) is collected.