JPH03141748A - Line exchange - Google Patents

Abstract

PURPOSE:To eliminate the necessity of processings corresponding to various communication standards and to make an operation easy by transmitting data while converting them to the use standard of reception data when the use communication standards of transmission side and reception side terminal equipments are different. CONSTITUTION:When a connection request signal from a communication terminal equipment 7a to a communication terminal equipment 8a is inputted to an exchange 2, a control part 3 and a communication standard information storage part 5 are referred and it is discriminated that the communication standards of the equipments 7a and 8a are different. After executing the line connection of the equipments 7a and 8a through a line exchange part 1a, the control part 3 sends out the data from the equipment 7a with a communication standard A. These data are converted to a communication standard X according to a conversion program, which is stored in the memory of the exchange 1, by the control part 3 and transmitted to the equipment 8a. Thus, it is not necessary to prepare the program corresponding to the various communication standard and the operation of an operator is made easy.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a line switching device having a communication protocol (protocol) conversion function.

(Prior Art) When performing data communication, if the communication protocols of both connected devices are different, communication cannot be performed.

In order to deal with such situations, conventional methods have been to convert the data to the data format of the communication destination in advance on the sending side communication terminal device and send the data, or to send the data to the receiving side communication terminal after receiving the data according to the communication rules of the other party. Communication was performed by converting data into a format suitable for the device, or by simulating the communication rules of the sending communication terminal at the receiving communication terminal and converting the data.

(Problem to be Solved by the Invention) Therefore, when communicating between various types of communication terminal devices using the conventional method as described above, it is necessary to use hardware and communication Format information and programs related to data are required for each terminal device, which increases the hardware and software of the communication terminal device and causes an increase in the price of the communication terminal device. The problem was that it required time.

Furthermore, there is a problem in that an operator or the like has to know the communication protocol information and instruct the communication terminal device about the communication protocol, which requires complicated operations.

The present invention solves the above problems by storing in advance communication protocol information used by a communication terminal device connected to a line switching device via a communication line in a storage means, and converting communication data when the communication protocol information used is different. The purpose of the present invention is to provide a line switching device that eliminates the problem.

(Means for Solving the Problems) As shown in FIG. 1, the line switching device of the present invention is a line switching device that selects and connects and releases a plurality of communication lines. input means 11 for inputting data corresponding to communication protocol information used by a communication terminal device connected to the communication terminal device information in correspondence with the communication terminal device information;
A communication agreement information storage means 12 stores data corresponding to the communication agreement information inputted by the input means 11 in correspondence with communication terminal device information, and refers to the data stored in the communication agreement information storage means 12 during communication. A determining means 13 for determining whether the communication protocols used by both communicating terminal devices are different communication protocols, and a transmission from the transmitting side communication terminal device when the determining means 13 determines that the communication protocols are different. The apparatus is characterized in that it includes a conversion means 14 that converts communication data into communication data according to a communication protocol used by a receiving side communication terminal device and sends the communication data.

(Function) In the line switching device of the present invention configured as described above, the communication contract information storage means 12 stores data corresponding to the communication contract information inputted in advance by the input means 11 in correspondence with the communication terminal device information. has been done. Therefore, the communication protocol information storage means 12 essentially stores communication protocol information for the communication terminal device in the form of a table.

During communication, the determining means 13 refers to the contents of the communication convention information storage means 12, and determines whether or not the communication convention used by the sending communication terminal device is different from the communication convention used by the receiving communication terminal device. It is determined by When the determination means 13 determines that the communication rules used by the sending communication terminal device and the communication rules used by the receiving communication terminal device are different, the conversion means 14 converts the transmission communication data from the sending communication terminal device. The data is converted into communication data according to the communication protocol used by the communication terminal device on the receiving side and sent out.

Therefore, there is no need to consider the communication protocol used by the other party at the transmitting side communication terminal device and the receiving side communication terminal device.

It goes without saying that the communication protocol used by the communication terminal device here must be convertible by the conversion means 14 into the communication protocol used by other communication terminal devices connected to the line switching device.

(Example) The present invention will be explained below using examples.

FIG. 2 is a block diagram showing the configuration of an embodiment of the present invention.

7a, 7b, 7c, 8a, 8b and 8 in FIG.
c indicates a communication terminal device, and 2 indicates communication terminal devices 7a to 7c.
and 8a to 8C are connected to the exchanges. The communication terminal devices 7a, 7b7c have communication lines 9a, 9b, respectively.
Communication terminal devices 8a, 8b, and 8c are connected to exchange 2 via communication lines 10a, 10b, and 10c, respectively, via line 9c. The exchange 2 includes line switching units 1a and lb, communication data to be sent to the line switching unit 1a, and line switching unit 1.
a buffer memory 4a that stores communication data input from a, a buffer memory 4b that stores communication data sent to the line switching unit lb and communication data input from the line switching unit 1b, and a communication protocol used by the communication terminal device. It is equipped with a communication protocol information storage section 5 that stores information in the form of a table for each communication terminal device, a control section 3 that controls the buffer memos 1J4a and 4b and the communication protocol information storage section 5, and performs communication protocol conversion control, etc. .

Further, a keyboard 6 as an input means is connected to the exchange 2, and communication terminal device information and communication protocol information used by the communication terminal are inputted from the keyboard 6.

The control unit 3 converts the communication agreement information input from the keyboard 6 into data corresponding to the communication agreement information, and stores the data corresponding to the communication agreement information in correspondence with the communication terminal device information in the communication agreement information storage unit 5. A function to write, and a function to refer to the data corresponding to the stored communication protocol information in the communication protocol information storage means 5 during communication and determine whether or not the communication protocols used by both communicating terminal devices are different communication protocols. It is equipped with Furthermore, when the communication rules of the communicating parties are different from each other, the control unit 3 cooperates with a conversion program stored in a memory (not shown) to transfer the transmitted communication data from the transmitting side communication terminal device to the receiving side communication terminal device. It is equipped with a data conversion function that converts communication data according to the communication protocol used.

Data corresponding to the communication protocol information used by the communication terminal devices 7a to 7c, 8a to 8c is stored in the communication protocol information storage section 5 by the control section 3 in accordance with the output from the keyboard 6. , memorize it in advance. The storage contents of the communication protocol information storage section 5 are schematically shown in FIG.

Next, the operation of one embodiment of the present invention will be explained with reference to FIG. 4, taking as an example the case where data is transmitted from the communication terminal device 7a to the communication terminal device 8a.

When a connection request signal is output from the communication terminal device 7a to the communication terminal device 8a, the connection request signal reaches the exchange 2 via the communication line 9a. The control unit 3 identifies the transmitting/receiving communication terminal device based on the originating line identification code and the receiving line identification code of the connection request signal. In this case, it is identified that the request is a data transfer request from the communication terminal device 7a to the communication terminal device 8a. According to this identification, the control unit 3 refers to the contents stored in the communication protocol information storage unit 5, and determines the communication protocol used by the communication terminal device 7a as the communication protocol A.
The communication protocol used by the communication terminal device 8a is the communication protocol X.
It is determined that the connection line is 10a and that the communication rules used by the two are different.

Next, the control unit 3 uses the line switching unit 1a to secure a data route between the communication terminal device 7a and the communication line 9a, and
The line switching unit 1a connects the communication terminal 8a and the communication line 10a.
After establishing a connection with the communication terminal device 7a, a line connection completion signal is sent to the communication terminal device 7a.

After the line connection is completed, communication protocol A is sent from the communication terminal device 7a.
Communication data is sent out. This data is temporarily stored in the buffer memory 4a under the control of the control unit 3, and the communication data stored in the buffer memory 4a is sequentially read out from the buffer memory 4a. The communication data read from the buffer memory 4a is sequentially converted into communication data according to the communication protocol X by the control unit 3 in accordance with a conversion program stored in a memory (not shown) provided in the exchange 2. , the communication data converted into communication data according to the communication protocol X is stored in the buffer memory 4b.

The communication data stored in the buffer memory 4b is sequentially read out and transmitted to the communication terminal device 8a according to the communication protocol X, and the communication terminal device 8a receives the communication data according to the communication protocol X.

When communication data transmission is completed, a line disconnection request signal is sent from the communication terminal device 7a, and the respective communication lines 9a and loa established with the communication terminal devices 7a and 8a are connected to the control unit 3.
The line switching units 1a and lb release the line in response to a signal from the line switching unit 1a, lb.

Further, when transmitting data from the communication terminal device 7b to the communication terminal device 8c, it is determined that the communication protocol used by the control unit 3 referring to the stored contents of the communication protocol information storage unit 5 is the communication protocol B. . Therefore, in this case, there is no need to convert the communication protocol, and the control unit 3 transfers the transmitted communication data from the communication terminal device 7b stored in the buffer memory 4a as it is to the buffer memory 4b, stores it in the buffer memory 4b, and stores it in the buffer memory 4b. The communication data stored in the communication terminal 4b is sequentially read out and transmitted to the communication terminal device 8C according to the communication protocol B. By this transmission, the communication terminal device 8
c receives communication data using communication protocol B. In this case, the data may not be stored in the buffer memories 4a and 4b, but may be transmitted to the communication terminal device 8C via the data path secured from the communication terminal device 7b.

In addition, in the above explanation, the case of the packet transmission method was explained as an example, but the exchange i! There is no problem with the A machine whether it is a circuit switching method or a packet switching method, and the communication line is also analog.
Any line such as digital or packet can be used, and the communication protocol information storage unit 5 may be a built-in memory made of semiconductor, an external storage device such as a hard disk device, a removable magnetic card, an IC card, etc. It may be.

(Effects of the Invention) As explained above, according to the present invention, when it is determined that the communication rules used by the sending side communication terminal device and the communication rules used by the receiving side communication terminal device are different when performing communication, the sending communication Since the data is converted into communication data based on the communication protocol used by the receiving communication terminal device, the transmitting communication terminals differ in communication protocol, data format, data transfer speed, analog line digital line type, etc. This has the effect that processing such as conversion according to the communication protocol of the other party is not necessary in the device or the receiving terminal device.

Further, there is an effect that there is no need for the operator to perform complicated operations while grasping communication protocol information of the other party.

Furthermore, when newly connecting a communication terminal device that uses a new communication protocol and has a conversion program in the line switching device to the line switching device, inputting the new communication protocol information via the input means allows you to change the communication status. Data corresponding to new communication agreement information can be stored in the agreement information storage means in association with a newly connected communication terminal device. This has the effect of being able to accommodate the addition of new communication terminal devices.

[Brief explanation of the drawing]

FIG. 1 is a functional block diagram showing the configuration of the present invention. FIG. 2 is a block diagram showing the configuration of an embodiment of the present invention. FIG. 3 is a schematic diagram for explaining the storage contents of the communication protocol information storage unit in one embodiment of the present invention. FIG. 4 is an explanatory diagram of a communication procedure at the time of communication protocol registration to provide an explanation of the operation in an embodiment of the present invention. 2... Switchboard, 7a to 7c and 8a to 8c... Communication terminal device, 11... Input means, 12... Communication protocol information storage means, 13... Discrimination means, 14... Conversion means .

Claims (1)

[Claims] In a circuit switching device that selects and connects and releases multiple communication lines, data corresponding to the communication protocol information used by the communication terminal device connected to the circuit switching device via the communication line is added to the communication terminal device information. an input means for inputting communication contract information, a communication contract information storage means for storing data corresponding to the communication contract information inputted by the input means in correspondence with communication terminal device information, and a communication contract information storage means for storing data in the communication contract information storage means during communication. A determining means for determining whether or not communication protocols used by both communication terminal devices that refer to data and communicate are different communication protocols; and a transmitting side communication terminal device when the determining means determines that the communication protocols are different. 1. A circuit switching device comprising: converting means for converting transmission communication data from a receiving side communication terminal device into communication data according to a communication protocol used by a receiving side communication terminal device and transmitting the converted communication data.