JPH04299641A - Store and forward program exchange - Google Patents

Abstract

PURPOSE:To obtain a history of a selection signal without provision of an exclusive device by comparing a stored selection signal output with selection signal information and outputting a selection signal output to a man-machine interface terminal equipment when they are matched. CONSTITUTION:When a subscriber is going to make dialing via a relay line 101, the relay line 101 and the subscriber line 102 are exchange-connected in a switch section 103 by a CPU 21 and a selection signal is sent to the relay line 101 via a selection signal transmitter 22. The sent selection signal is sent to the CPU 21 and stored in a storage memory. The CPU 21 compares the stored selection signal with the selection signal information stored in the storage memory and a selection signal output is outputted to a man-machine interface terminal equipment 24 as a history of the selection signal when they are matched. Thus, the history of the selection signal is obtained from the display of the man-machine interface terminal equipment 24 without provision of an exclusive device.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stored program exchanger, and more particularly to a stored program exchanger having a function of outputting a history of selection signals at the time of trunk transmission.

0002

BACKGROUND OF THE INVENTION With the development of the information society, social demands for expanding and improving the convenience of telecommunications have become more sophisticated and diversified, and this trend is expected to continue in the future. In telecommunications using a communication network, an electrical signal is sent from a subscriber terminal of the communication network, and transmitted to the target subscriber terminal through a transmission path. In order to layer and simplify the communication network, switching equipment is installed on this transmission path to connect many lower layer lines and upper layer lines with switches for sending and receiving exchanges. It has become indispensable in communication methods.

[0003] The basic configuration of a stored program exchange among exchanges consists of a switch circuit having a large number of switches connecting lines, and a central processing unit that controls the switch circuits and the entire exchange, and is becoming more sophisticated. Accordingly, a trunk for monitoring and controlling the trunk line, a selection signal sending device for sending a selection signal to the trunk line to the central processing unit, etc. are provided. In this way, when the exchange becomes complicated,
In order to ensure the reliability of communication networks, it is necessary to constantly monitor the status of exchanges. The selection signal history output function is also an essential function to ensure its reliability. Conventionally, this type of selection signal history output was performed by installing a selection signal tracing device on the actual line or trunk. By monitoring the selection signal, the trace of the selection signal, that is, the history of the selection signal, has been investigated.

0004

[Problem to be Solved by the Invention] In recent years, with the increasing sophistication and diversification of social demands for the convenience of telecommunications, the number of lines and trunks have increased.In this case, in order to check the selected signal history, In this conventional method of installing selective signal tracing equipment, it is necessary to install selective signal tracing equipment on all lines or trunks. Installing selective signal tracing devices on all lines or trunks
If space is required for the device, construction work is required for installation, and there is not enough space,
A disadvantage arises that it is not possible to select and trace an arbitrary selection signal. As described above, the conventional storage program exchanger has had the problem of not being able to cope with the increase in the number of lines due to the recent increasing sophistication and diversification of social demands for the convenience of telecommunications.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to improve the disadvantages of the prior art and, in particular, to provide a storage program exchanger that can obtain the history of selection signals without a dedicated device.

[0006]

[Means for Solving the Problems] The present invention provides a plurality of switches for switching connection of trunk lines and subscriber lines of a communication network, a central processing unit for controlling the connection of these switches, and a central processing unit for controlling the connection of these switches, and a plurality of switches for connecting trunk lines and subscriber lines of a communication network. A selection signal sending device that sends a selection signal to the central processing unit, a trunk that monitors and controls the trunk line, and a man-machine interface terminal that inputs and outputs information regarding the exchange connection to an operator of the central processing unit. We are prepared. Furthermore, in the central processing unit,
A means for accumulating a selection signal output from the selection signal transmitting device and a means for accumulating selection signal information from the man-machine interface terminal compare the accumulated selection signal output and the selection signal information to find that they match. In this case, a means for outputting the selection signal output to the man-machine interface terminal is provided. This aims to achieve the above-mentioned purpose.

[0007]

[Operation] The selection signal information is given to the central processing unit in advance and stored, and when the trunk line and the subscriber line are exchange-connected, the selection signal output from the selection signal sending device is sent to the central processing unit. Transmitted and accumulated. The central processing unit compares the accumulated selection signal output and the selection signal information, and if they match, the selection signal output is output to the man-machine interface terminal as a history of the selection signal.

[0008]

Embodiment An embodiment of the present invention will be explained based on FIGS. 1 to 3.

FIG. 1 is a diagram of a relay system including an embodiment of the present invention. The storage program switch 20 shown in FIG. 1 includes a trunk line 101 and a subscriber line 102.
Switch unit 1 consisting of a plurality of switches for exchange connection of
03, a central processing unit 21 that controls the connection of these switches, and a central processing unit 2 that sends a selection signal to the trunk line 101.
1, a trunk 23 that monitors and controls the trunk line 101, and a manual system that inputs and outputs information regarding exchange connections to the operator of the central processing unit 21.
It is equipped with a machine interface terminal 24. Furthermore, the central processing unit 21 has means for transmitting and accumulating the selection signal output from the selection signal sending device 22, means for accumulating selection signal information from the man-machine interface terminal 24, and the accumulated selection signal output and selection. It has means for comparing the signal information and outputting a selected signal output to the man-machine interface terminal 24 when they match.

FIG. 2 shows, in the central processing unit 21, a storage memory 51 as a means for accumulating the selection signal output from the selection signal sending device and a means for accumulating the selection signal information from the man-machine interface terminal. The storage memory 52 is shown.

As an example, it is assumed that selection signal information as shown in FIG. 2 is written in the storage memory 51, and the operation of the storage program exchanger 20 shown in FIG. 1 will be described below.

As shown in FIG. 3, when a certain subscriber attempts to make a call via a trunk line, the trunk line 101 and the subscriber line 102 are exchanged and connected by the central processing unit 21 at the switch section 103. A selection signal is sent to trunk line 101 via a selection signal sending device. The sent selection signal is transmitted to the central processing unit 21 and stored in the storage memory 52 as shown in FIG. Central processing unit 21
Then, since the first five digits of the information in the storage memory 51 and the storage memory 52 match, the selection signal information in the storage memory 52 is transmitted to the man-machine interface terminal 24,
Is displayed. Man-machine interface terminal 24
The history of the selection signal is obtained from the display.

[0013] Here, an example of one trunk is given.
It operates in the same way even if there are multiple trunks, that is, the number of trunk lines increases.

[0014]

As described above, according to the present invention, the central processing unit includes means for accumulating selection signal information and selection signal output, and means for comparing and transmitting it to the man-machine interface terminal when they match. By providing this, the history of selection signals can be obtained from the display of the man-machine interface terminal 24 without installing a dedicated device, and the reliability of the communication network can be ensured without requiring extra space. Even if there are multiple trunks, it is possible to provide an unprecedented storage program switch that can trace any selected signal to the trunk line.

[Brief explanation of drawings]

FIG. 1 is a diagram of a relay system including an embodiment of the present invention.

FIG. 2 is a diagram showing a storage memory of the central processing unit in FIG. 1;

FIG. 3 is an explanatory diagram of the operation of FIG. 1;

FIG. 4 is a diagram showing a storage memory of the central processing unit in FIG. 3;

[Explanation of symbols]

21 Central processing unit 22 Selection signal sending device 23 Trunk line trunk 24 Man-machine interface terminals 51 to 52 Storage memory 101 Trunk line 102 Subscriber line 103 Switch section

Claims (1)

[Claims] 1. A plurality of switches for switching and connecting trunk lines and subscriber lines of a communication network, a central processing unit for controlling connection of these switches, and a selection signal for the trunk line for transmitting a selection signal to the central processing unit. A stored program exchanger comprising a selection signal sending device for sending out a selection signal, a trunk for monitoring and controlling the trunk line, and a man-machine interface terminal for inputting and outputting information regarding the exchange connection to an operator of the central processing unit, In the central processing unit, means for accumulating the selection signal output from the selection signal sending device, means for accumulating selection signal information from the man-machine interface terminal, and the accumulated selection signal output and the selection signal. A storage program exchanger comprising: means for comparing information and outputting the selection signal output to the man-machine interface terminal when the information matches.