JPH0759132A - Electronic exchange - Google Patents

Abstract

PURPOSE:To provide service between stations similarly to the case with extension mutual service to terminal equipments accommodated in each of plural exchanges in a network comprising the plural exchanges. CONSTITUTION:A control circuit 14 is provided with a remote control mode in addition to the exchange operation mode executing exchange connection processing and connects fixedly one to one of plural terminal equipment interface circuits 12 and an exchange interface circuit 13 when the mode is set to the remote control mode. As a result, a terminal equipment 30 accommodated in the terminal interface circuit is connected directly to other electronic exchange 20 and the service by the other electronic exchange 20 is served to the terminal equipment in addition to the service of the electronic exchange 10 similarly and the service bridged between stations is served similarly to the case with the extension mutual service.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic exchange, and more particularly to an electronic exchange capable of operating as a remote device of another electronic exchange in addition to the exchange operation based on the execution of a normal storage program.

[0002]

2. Description of the Related Art In the case where a plurality of small-sized exchanges are integrated to form one network, conventionally, a method of introducing an exchange serving as a central station and controlling each small-scale exchange by this central station is used. Has been. In such a case, two signal systems, that is, an individual line signal system and a common line signal control system are known as the signal systems connecting the respective exchanges. However, in the individual line signaling system, it is basically difficult to provide the service across the exchanges, that is, between the stations, because the information for connecting the exchanges cannot be exchanged basically. Therefore, if you want to combine multiple exchanges so that they can operate as if they were a single exchange, so that you can provide services that span each station, you can use the other signal instead of the individual line signaling method described above. A common line signaling system, which is a system, is used. That is, by connecting a plurality of exchanges by this common line signaling system and exchanging control information via this common line, even if a service extends over a plurality of exchanges, it is possible to connect to one exchange. Various service functions are realized.

[0003]

However, even if a plurality of exchanges are connected by using the common line signaling system, there are restrictions on the numbering plan and service transparency (transparency of service functions) as described below. Occurs. That is, for example, if the extension number of each exchange to be integrated is set to be arbitrary,
The central office switch cannot identify the switch accommodating the extension number without expanding all digits of the extension number. Therefore, there is a problem that the processing at the central station becomes complicated and the capacity of the memory for storing the extension number of each exchange increases. Further, for maintenance, when one terminal is replaced by another exchange from one exchange, there is a troublesome problem that the data must be changed in the exchange of the central office and the three exchanges of the respective exchanges. . Furthermore, in the common line signaling system, signal propagation delay generally occurs,
There has been a problem that services between stations and services between extensions cannot be performed at exactly the same level.

Therefore, an object of the present invention is to provide an inter-station service as well as an extension mutual service with a simple structure.

[0005]

In order to solve such a problem, the present invention provides a plurality of terminal interface circuits for interfacing with a plurality of accommodated terminals, another electronic exchange and a multiplexed transmission line. And a switch interface interface circuit for interfacing a call signal and a control signal such as voice and data transmitted and received via the multiplexed transmission line, and a call path is provided between the terminal interface circuit and the switch interface circuit. In an electronic exchange having a call path switch to be set and a control circuit for controlling the call path switch to perform exchange connection processing, the control circuit has a remote operation mode in addition to the exchange operation mode for executing the exchange connection processing, When the remote operation mode is entered, the call path switch is controlled to control multiple terminal interface circuits and exchange interface. And Esu circuit is obtained so as to fixedly connect to the 1-to-1.

[0006]

In the remote operation mode, the plurality of terminal interface circuits and the exchange interface circuit are fixedly connected in a one-to-one correspondence. As a result, it becomes possible to directly connect the terminal accommodated in the terminal interface circuit to another electronic exchange, and therefore, for this terminal, the service of the other electronic exchange as well as the service in this electronic exchange is provided. It is also possible to provide a service that extends between stations as well as an extension mutual service.

[0007]

The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a network to which an electronic exchange according to the present invention is applied. In the figure, 10, 2
0 is an electronic exchange, 11 is a speech path switch, 121, 12
2 is a terminal interface circuit, 13 and 21 are exchange interface circuits, 14 is a control circuit, 15 is a memory circuit,
16 is a disk drive, 301 and 302 are terminals, 40
Is a multiplexing transmission circuit.

Here, the electronic exchange 10 has two operations, a normal exchange operation mode (hereinafter referred to as an exchange operation mode) according to a stored program exchange method and an operation mode (remote operation mode) as a remote device of another electronic exchange 20. It has a mode. The memory circuit 15 of the electronic exchange 10 can store a program of either of the above two operation modes, but the exchange of these two programs is performed by recording on a floppy disk, a hard disk, a memory card or the like. Depending on the medium, the disk drive 16
Can be downloaded to the memory circuit 15 via.

The control circuit 14 performs a switching operation mode process or a remote operation mode process according to a program of the memory circuit 15. In the remote operation mode, the control circuit 14 controls the communication path switch 11 to perform the terminal interface circuit process. 121, 122 and exchange interface circuit 13
So that and are fixedly connected one to one.

The multiplexed transmission line 40 is a transmission line multiplexed by wire or wirelessly, and has an exchange interface circuit 21 of the electronic exchange 20 on the master station (central station) side and an exchange interface of the electronic exchange 10 on the remote side. Circuit 1
3 is connected. As for the channels multiplexed on the multiplexing transmission line 40, a control signal is transmitted for one channel and a communication channel signal such as voice and data is transmitted for the other channels.

In the electronic exchange 10, the exchange interface circuit 1 sends and receives control information to and from the electronic exchange 20 on the master station side.
3, and the state monitoring and control of the terminals 301 and 302 are performed via the corresponding terminal interface circuits 121 and 122. The control circuit 14 relays and processes control information between the terminal interface circuits 121 and 122 and the exchange interface circuit 13. As a result, the electronic exchange 20 does not need to be aware of the electronic exchange 10 and each terminal 3
It becomes possible to control 01, 302.

In this embodiment, an example in which one of the exchange operation mode program and the remote operation mode program is downloaded to the memory circuit 15 has been described, but both the exchange operation mode and the remote operation mode are downloaded. The program may be stored in the memory circuit 15 and the control circuit 14 may be configured to execute one of the programs depending on the operation mode of the electronic exchange 10. In addition, in the present embodiment, an example in which one of the two operation modes of the electronic exchange 10 is preset is explained, but when the electronic exchange 20 is inoperable at all times by operating in the remote operation mode, When the electronic exchange 10 cannot be controlled by the electronic exchange 20, the operation mode of the electronic exchange 10 is changed to the exchange operation mode and the terminals 301 and 302 accommodated in the electronic exchange 10 are changed.
You may make it provide a service with respect to.

As described above, when the electronic exchange 10 is used as a remote device for other electronic exchanges 20, there are no restrictions such as a numbering plan and service transparency as compared with the case where the conventional common line signaling system is used. Even when a plurality of electronic exchanges are connected and used, they can be operated as one electronic exchange.

[0014]

As described above, according to the present invention, when the remote operation mode is set, the control circuit fixedly connects the plurality of terminal interface circuits and the exchange interface circuit in a one-to-one correspondence. Therefore, it is possible to directly connect a terminal accommodated in a terminal interface circuit of an electronic exchange to another electronic exchange, and therefore, to provide this terminal with a service extending between stations as well as an extension mutual service. There is an effect.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of a network to which an electronic exchange according to the present invention is applied.

[Explanation of symbols]

 10, 20 Electronic switch 11 Call path switch 121, 122 Terminal interface circuit 13, 21 Switch interface circuit 14 Control circuit 15 Memory circuit 16 Disk drive 301, 302 Terminal 40 Multiplexed transmission path

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[Procedure amendment]

[Submission date] June 9, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0005

[Correction method] Change

[Correction content]

[0005]

In order to solve such a problem, the present invention provides a plurality of terminal interface circuits for interfacing with a plurality of accommodated terminals, another electronic exchange and a multiplexed transmission line. And a switch interface interface circuit for interfacing a call signal and a control signal such as voice and data transmitted and received via the multiplexed transmission line, and a call path is provided between the terminal interface circuit and the switch interface circuit. In an electronic exchange having a call path switch to be set and a control circuit for controlling the call path switch to perform exchange connection processing, the control circuit has a remote operation mode in addition to the exchange operation mode for executing the exchange connection processing, When the remote operation mode is entered, the call path switch is controlled to control multiple terminal interface circuits and exchange interface. And Esu circuit is obtained so as to fixedly connect to the 1-to-1. Also, the replacement operation mode
And programs for remote operation mode are stored.
Rumemori circuit and program from the recording medium to this memory
Also has a disk drive to download into the circuit
Of. Also, replace operation mode and remote operation mode.
Has a memory circuit that stores both programs
The control circuit controls the program according to the operating mode
Either one is executed. In addition, the control circuit
Operate in remote operation mode at all times to
This is to change to the replacement operation mode when the operation is abnormal.
It

Claims (1)

[Claims] 1. A plurality of terminal interface circuits for interfacing with a plurality of terminals accommodated therein, a voice connected to another electronic exchange through a multiplex transmission line, and transmitted and received through the multiplex transmission line, A switch interface circuit for interfacing a call path signal such as data and a control signal, a call path switch for setting a call path path between the plurality of terminal interface circuits and the switch interface circuit, and controlling the call path switch. In the electronic exchange having a control circuit for performing exchange connection processing by means of a switching operation mode, the control circuit has a remote operation mode in addition to the exchange operation mode for executing the exchange connection processing. By controlling a switch, the plurality of terminal interface circuits and the exchange interface circuit are brought into one-to-one correspondence. Electronic exchange, characterized in that it has to be connected to Joteki.