JP2623521B2 - Distributed processing electronic exchange - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a configuration of an electronic exchange, and more particularly to a distributed processing type electronic exchange.

〔Overview〕

According to the present invention, in a distributed processing type electronic exchange, a common bus is provided between a controlled device and a processing device to be controlled, and a plurality of processing devices are arranged so that a failure of the electronic exchange due to a failure of the processing device is reduced. In addition, the system configuration is simplified.

[Conventional technology]

Conventionally, this type of distributed processing type electronic exchange has an integrated type in which a processing unit for maintenance operation directly controls an input / output device for a man-machine interface and an external storage device, and a signal processing device directly controls a line interface unit. And the system has only one device. Furthermore, interfaces between the line interface device, the signal processing device, the switch device, and the processing device are diversified, and connection hardware such as a cable is very large.

[Problems to be solved by the invention]

In the above-mentioned conventional distributed processing type electronic exchange, since the processing device is exclusively used, even if the input / output device to be connected is normal, the control becomes impossible due to the failure of the processing device to be controlled. The fault that the switchboard breaks down and reduces its reliability because the line interface device cannot be used at all or the line interface device cannot be used at all, the function cannot be easily added or changed, and the cable for the interface between devices. There was a drawback that the number and hardware were large and the logical interface was complicated.

An object of the present invention is to eliminate the above-mentioned drawbacks, to improve the reliability of the switch so that even if the processing unit fails, the switch does not fail, and to add a function easily and simply. It is an object of the present invention to provide a distributed processing type electronic exchange.

[Means for solving the problem]

A distributed processing type electronic exchange according to the present invention includes a man-machine interface input / output device group including input / output devices for performing system maintenance and operation, a processing device group including a processor for executing a program and a local memory. A storage device group for storing a program to be executed by the processing device group and its data, a switch device group including a switch for exchanging speech or communication data and a switch control device for controlling the switch, and a terminal or another exchange. In an electronic exchange having a group of signal processing devices for transmitting and receiving signals between and a line interface device for interfacing a subscriber line or a trunk line, the input / output device group for the man-machine interface is maintained and operated. Alternatively, the above processing device is provided by a command common bus for transmitting a control signal of the system. And the storage device group, the processing device group and the storage device group are connected to each other by a signal common bus for transmitting a control signal necessary for performing communication or exchange of communication data. A group is connected to the line interface device group, and the switch device group, the signal processing device group, and the line interface device group are connected to each other by an information common bus for transmitting a call or communication data.

(Operation)

According to the present invention, a common bus is arranged between an input / output device for a man-machine interface or a line interface device to be controlled and a processing device to be controlled, each of which has an independent system, and has a plurality of processing devices having the same function. In addition, control information between devices is aggregated in a signal common bus, and information and data connections are also aggregated in an information common bus, so that a controlled device can be used even if one processing device fails. It does not become impossible and does not lead to failure of the electronic exchange. Further, the interfaces between the devices can be integrated into a signal common bus, which facilitates addition of functions and simplifies the system configuration.

〔Example〕

 Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention. A command common bus 1 for transmitting a maintenance / operation / system control signal, a signal common bus 2 for transmitting a control signal necessary for exchanging a call or communication data, and transmitting user information such as a call or communication data. An information common bus 3, man-machine interface input / output devices 10, 11, 12, and 13 including a keyboard, a display, and a printer for maintenance and operation of the system, a processor for executing programs, and a local memory 2n, and a common memory device for storing programs executed by the processing units 20 ... 2n and their data
30 ... 3n, an external storage device 40 ... 4n such as a disk for backing up the common memory device 30 ... 3n and storing various data collected in the exchange, and an incoming line with priority given to receiving from a subscriber line or a trunk line Interface devices 50 ... 5n, outgoing line interface devices 70 ... 7n for giving priority to transmission to a subscriber line or a trunk line, and switch devices 60 ... 6n each comprising a switch for exchanging speech or communication data and a switch control circuit. And a signal processing device 80 ... 8n for transmitting / receiving signals to / from a terminal or another exchange and performing signal processing for connection of communication or communication data
It is composed of

Here, the incoming line interface devices 5... 5n and the outgoing line interface devices 60... 6n are separately described for explanation, but are physically configured as a pair.

That is, the feature of the present invention resides in that a command common bus 1, which handles a plurality of device groups, a signal common bus 2, and an information common bus 3 are provided.

Next, the operation of the present embodiment will be described. First of all, the operation as an exchange is performed from the external storage devices 40.
The data is transferred to the common memory devices 30 ... 3n, and the processing devices 20 ...
2n loads the program into the local memory, performs initialization, and starts the online processing.

Next, the operation of the telephone will be described with reference to the sequence diagram of FIG.

When a telephone call arrives at the incoming line interface device 50, the incoming line interface device 50 performs incoming call detection,
A dial tone as an incoming response signal is returned to the transmitting side, and received information or a received signal is transmitted to the signal processing device groups 80... 8n via the signal common bus 2 according to the signal type. There are a plurality of signal processing device groups 80... 8n depending on the type of signal, and an empty signal processing device 80 receives a received signal or a received signal, receives information or a dial digit from a calling side, analyzes a signal, Provides storage and interface with originator. When the signal processing of the call is completed, the signal processing device 80
The received information or dialed digits are transmitted to the processing device groups 20... 2n via the signal common bus 2. Processing equipment group 20… 2n
.. 8n, the incoming call control processor 20 receives information from the signal processor 80, analyzes the digits, and outputs the outgoing line interface 70.
Then, the route is reserved for the switch, and if the call is a circuit-switched call, the outgoing line interface device 70 is instructed to call the receiving side. On the other hand, the calling side is instructed to transmit a ring back tone.

In the processing device groups 20... 2n, information necessary for control processing is read out and written to the common memory device groups 30... 3n and, if necessary, the external storage devices 40. The outgoing line interface device 70, which has received the incoming call command, sends a call signal to the receiving side, monitors the response, and when a response is received, enters the incoming line interface device 50 via the signal common bus 2 and the reserved switch device. Notify 60. Incoming line interface device 50 that received the response notification
Transmits / receives a command channel of the transmission line and the information common bus 3 and information. On the other hand, the switch device 60 that has received the response notification
Can be communicated by setting a path to exchange channels.

At the end of the call, the incoming line interface device that detected the end of the call
Reference numeral 50 notifies the termination information to the processing device groups 20... 2n, the switch device 60, and the outgoing line interface device 70, and instructs a path disconnection process.

On the other hand, the man-machine interface is performed via the man-machine interface input / output device groups 10, 11, 12, 13 and the processing device groups 20... 2n or the external storage devices 40. In addition, new functions can be added or changed easily by the procedure of adding a new function to one of the same type of processing units 2n, and then adding the above functions to the remaining same type of processing units. Become.

〔The invention's effect〕

As described above, the present invention provides an apparatus which is controlled even if a processing apparatus fails by arranging a common bus between a controlled apparatus and a processing apparatus to be controlled and arranging a plurality of processing apparatuses. Can be used, and it is possible to easily add or change a new function. In addition, since the interfaces between the devices are concentrated on the signal common bus, the logical interface is simplified and the amount of hardware such as cables is reduced. On the other hand, as a function of exchanging information data, it is possible to create an STS basic switch configuration in which a line interface device and an information common bus are a space switch and a switch device is a time switch, and information data can be connected only by the information common bus. There is an effect that can be.

[Brief description of the drawings]

FIG. 1 is an overall block diagram of an embodiment of the present invention. FIG. 2 is a processing sequence diagram of a local call in the embodiment. 1 ... command common bus, 2 ... signal common bus, 3 ...
Information common bus, 11, 12, 13, 14 ... I / O device for man-machine interface, 20 ... 2n ... Processing device, 30 ... 3n ...
... Common memory device, 40 ... 4n ... External storage device, 50 ... 5n ...
… Incoming line interface device, 60… 6n… Switch device, 70… 7n …… Outgoing line interface device, 80… 8n…
Signal processing device.

Claims (1)

(57) [Claims] 1. An input / output device group for man-machine interface comprising input / output devices for performing system maintenance and operation, a processing device group including a processor and a local memory for executing a program, and a processing device group A storage device group for storing programs and their data to be executed by a switch, a switch device group including a switch for exchanging call or communication data and a switch control device for controlling the switch, and a signal between a terminal or another exchange. In an electronic exchange having a signal processing device group for performing transmission and reception and a line interface device group for interfacing a subscriber line or a trunk line, the input / output device group for the man-machine interface is used for maintenance operation or system control signals. The processing device group and the storage device are transmitted by a command common bus for transmitting The processing device group and the storage device group are connected to the switching device group, the signal processing device group, and the line by a signal common bus that transmits a control signal necessary for performing communication or exchanging communication data. A distributed processing type electronic exchange, wherein the switching equipment group, the signal processing equipment group, and the line interface equipment group are connected to each other by an information common bus for transmitting speech or communication data. .