JPH03141750A - Line exchange - Google Patents

Abstract

PURPOSE:To eliminate the necessity of a processing corresponding to a standard by discriminating the standard identification data of a terminal equipment, writing standard information to a storing means by a first or second writing means and converting the standards on transmission and reception sides to be same at the time of communication. CONSTITUTION:When the communication standard identification information and the standard information are transmitted from the communication terminal equipment to an exchange, a discriminating means 13 discriminates whether the identification data are already stored in a communication standard information storing means 11 or not. When it is discriminated that the data are not stored yet, the identification data and the standard information are written into the means 11 by a first writing means 14-1. When it is discriminated that the data are already stored, the data and the information are written into the means 11 by a second writing means 14-2. In the case of communication, the identification data stored in the means 11 are referred and in the case of communication according to the different standard, transmitting data are converted to the reception side standard by a converting means 15 while using the standard information of the means 11 and transmitted. Thus, it is not necessary to execute the processing corresponding to the standard and the operation can be 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) changing 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 converting data by simulating the communication rules of the sending communication terminal at the receiving communication terminal.

(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 data to realize conversion of multiple corresponding communication protocols. format information and programs are required for each terminal device, which increases the hardware and software of the communication terminal device, increases the price of the communication terminal device, and requires a lot of time to create programs that comply with various communication regulations. The problem was that the company had to spend a lot of money.

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 provides a line that solves the above problems by registering a new communication protocol when a new communication terminal device is installed or when the communication protocol used by the communication terminal device is changed. The purpose is to provide a replacement device.

(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. communication contract information storage means 11 for storing communication contract information used by a communication terminal device connected to the communication terminal device and communication contract identification data corresponding to the communication contract information in correspondence with the communication terminal device information; a determining means 13 for determining whether or not the same communication contract identification data as the data is already stored in the communication contract information storage means 11; and when it is determined that the transmitted communication contract identification data is not stored, the communication contract The first writing means 14-+ writes the identification data and the communication agreement information corresponding to the communication agreement identification data into the communication agreement information storage means 11 in correspondence with the communication terminal device information, and the communication agreement identification data that is the same as the transmitted communication agreement identification data. When it is determined that the communication contract identification data is already stored, a second writing means 14- writes information on the communication terminal device that transmitted the communication contract identification data into the communication contract information storage means 11 in correspondence with the same communication contract identification data. 2, and communication protocol information storage means 1 for communication.
1 refers to the communication protocol identification data stored in the communication protocol identification data stored in the communication protocol information storage means 11 to receive transmission communication data from the transmitting side communication terminal device when communication is based on mutually different communication protocols. Conversion means 15 that converts into communication data according to the communication protocol used by the side communication terminal device and sends it out.
It is characterized by having the following.

(Operation) When the line switching device of the present invention configured as described above transmits communication contract identification data for communication contract information used or changed by a communication terminal device, the circuit switching device of the present invention is configured to be identical to the transmitted communication contract identification data. The determining means 13 determines whether the communication contract identification data is already stored in the communication contract information storage means 11 or not. By this determination,
When it is determined that the same communication agreement identification data as the sent communication agreement identification data is not stored, the sent communication agreement identification data and the communication agreement information corresponding to the communication agreement identification data are the communication agreement information. In the storage means 11,
The information is stored by the first writing means 14-1 in correspondence with the transmitted communication terminal device information. Furthermore, when it is determined that the same communication contract identification data is already stored, the information of the communication terminal device that transmitted the communication contract identification data is stored in the second communication contract storage means 11 in correspondence with the same communication contract identification data. It is stored by the writing means 14-2. Therefore, the communication protocol information storage means 11 essentially stores communication protocol identification data and communication protocol information for the communication terminal device in the form of a table. When a communication terminal device is newly connected, by transmitting the communication contract information of the newly connected communication terminal device, the communication contract information used by the communication contract information storage means 11 is substantially registered only when it is unregistered. This will prevent double registration. The same applies to the case of changing the communication protocol to be used.

During communication, the conversion means 15 refers to the contents of the communication convention information storage means 11, and when the communication convention used by the sending communication terminal device and the communication convention used by the receiving communication terminal device are different, the conversion means 15, the transmission communication data from the transmitting side communication terminal device is converted into communication data according to the communication protocol used by the receiving side communication terminal device, and is sent out.

Therefore, it is not necessary for the transmitting side communication terminal device and the receiving side communication terminal device to consider the communication rules used by the other party.

The communication protocol used or changed by the communication terminal device here needs to be convertible by the conversion means 15 into the communication protocol used by other communication terminal devices connected to the circuit switching device. Of course.

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

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

In FIG. 2, 2a, 2b and 2C represent communication terminal devices, and l represents an exchange to which the communication terminal devices 2a, 2b and 2C are connected. The communication terminal device 2a has a communication amount L
? The communication terminal device 2b is connected to the exchange 1 via the communication line 3b, and the communication terminal device 2C is connected to the exchange 1 via the communication line 3C via I3a. The exchange 1 includes a communication agreement information storage unit 5, a buffer memory 6, a communication agreement information storage unit 5, and a buffer memory 6, which store communication agreement identification data and communication agreement information used by communication terminal devices in the form of a table for each communication terminal device. The controller 4 is provided with a control unit 4 that controls communication protocol conversion and the like.

The control unit 4 has a detection function for detecting whether the transmission data is communication agreement identification data, and a detection function that detects whether the communication agreement identification data that is the same as the communication agreement identification data detected as having been transmitted by the detection function is already stored in the communication agreement information storage unit 5. A determination function that determines whether or not the communication contract identification data is stored, and when it is determined that the communication contract identification data that has been sent is not stored, the communication terminal device transmits the communication contract identification data and the communication contract information corresponding to the communication contract identification data. If the information is written in correspondence with the communication agreement information storage unit 5 and it is determined that it has been stored, the information of the communication terminal device that transmitted the communication agreement identification data is written in the communication agreement information storage unit 5 in correspondence with the same communication agreement identification data. It has the ability to write to. Furthermore, the control unit 4 refers to the information stored in the communication agreement information storage unit 5, and when the communication agreement of the communication partner differs, the control unit 4 cooperates with a conversion program stored in a memory (not shown) to It has a data conversion function that converts transmission communication data from the device into communication data according to the communication rules used by the receiving communication terminal device.

Registration of the communication protocol identification data used by the communication terminal devices 2a, 2b, and 2C is performed when the communication terminal devices 2a, 2b, and 2c are installed, or when the communication protocol to be used is changed.

In this embodiment, the case where communication protocol identification data and communication protocol information used are transferred and registered from the packet communication terminal device connected to the exchange 1 will be explained with reference to FIG. 3, taking as an example the case where registration is performed from the communication terminal device 2C. do.

When the communication terminal device 2C instructs to register the communication contract, the communication line 3C is secured according to a predetermined procedure, and after the communication line 3C is secured (indicated as line established in Fig. 3), A communication protocol registration request signal is output and input to the exchange 1 via the communication line 3C.

When the control unit 4 of the exchange 1 detects that the manually input signal is a communication protocol registration request signal, the control unit 4 of the exchange 1 outputs the communication protocol information storage unit 5.
After confirming that there is a remaining storage capacity, a communication protocol registration preparation completion signal is sent to the communication terminal device 2.

Communication protocol identification data unique to each communication protocol used is transmitted from the communication terminal device 2C that has received the communication protocol registration preparation completion signal. Upon receiving the communication agreement identification data, the received communication agreement identification data is sequentially compared with the communication agreement identification data stored in the communication agreement information storage unit 5 by the control unit 4, and the same data is already stored in the communication agreement information storage unit 5. It is determined whether communication protocol identification data is stored.

As a result of this determination, if it is determined that the same communication contract identification data has already been stored in the communication contract information storage section 5, a communication contract information registered signal has already been sent from the exchange 1.
Disconnect the communication line 3C.

The storage contents of the communication contract information storage section 5 are stored in the form of a communication contract table, and the contents before the communication contract identification data is sent from the communication terminal device 2C are schematically shown in FIG. 4 (a). ), and when the communication protocol identification data is sent from the communication terminal device 2C and the determination results are the same, the stored contents of the communication protocol storage unit 5 are "3C" in line with the communication line code "3a". " is stored, as shown schematically in FIG. 4(b). In this case, a case is illustrated in which the communication protocol used by the communication terminal device 2C and the communication protocol used by the communication terminal device 2a are the same.

As a result of the above determination, if it is determined that the same communication contract identification data is not stored in the communication contract information storage section 5, the communication contract identification data "3" and the communication line code II3C
I+ is stored in the communication protocol information storage section 5, and at the same time, a communication protocol information registration permission signal is transmitted from the exchange 1. Communication terminal device 2 that received the communication protocol information registration permission signal
A communication protocol information transfer start request signal is sent from C. The controller 4 receives the communication protocol information transfer start signal and then the switch 1
When the communication protocol information can be registered, a communication protocol information registration preparation completion signal is sent to the communication terminal device 2c. The communication terminal device 2c that receives the communication agreement information registration preparation completion signal starts transmitting the communication agreement information in a predetermined format.

The exchange 1 that has received the communication protocol information sequentially stores the received communication protocol information in the buffer memory 6 through the internal bus 7 under the control of the control unit 4 .

When the transmission of the communication agreement information is finished, the communication terminal device 3
A data end signal is sent from a. After receiving the data end signal, the control section 4 sends out a reception completion signal and then disconnects the line.

A communication agreement information end signal is added to the end of the communication agreement information, and when the control unit 4 confirms that the communication agreement information end signal has been received, the control unit 4 sends a message as shown by the one-dot chain line in FIG. A data reception confirmation signal may be output to the communication terminal 3a.

On the other hand, the communication protocol information of the communication terminal device 3a once stored in the buffer memory 6 is read out by the control unit 4, and the communication protocol information once stored in the buffer memory 6 is stored in the form of a communication protocol table. Transferred to the communication agreement information column for communication agreement identification code IT 311 in part 5,
Stored. As shown in FIG. 4(a), when the communication protocol information used by the communication terminal devices 2a and 2b is already registered in the communication protocol information storage unit 5, the communication protocol information for the communication terminal device 2c is further registered as described above. When a communication agreement is registered and the communication agreement information is C'', the communication agreement table is schematically shown in FIG. 4(c).

When the communication protocol information is registered as described above, the communication protocol table is referenced when the sending and receiving communication terminal devices are connected during communication, and when the communication protocols used by both communication terminal devices differ. With a conversion program stored in a memory (not shown) provided in the exchange 1, the input communication data from the sending side communication terminal device is converted according to the communication rules used by the receiving side communication terminal device, and the data is received. Output to the side communication terminal device. Further, if the communication rules used by both communication terminal devices are the same, no conversion is necessary, and the input communication data from the sending communication terminal device is output to the receiving communication terminal device without conversion.

In addition, in the above-described embodiment, in order to register the communication agreement information, communication agreement identification data and further communication agreement information are transmitted as necessary from the communication terminal device connected to the exchange 1, so that it is necessary to newly install a device. , no need to change connections. Furthermore, the communication protocol identification data is sent from the keyboard instead of the communication terminal device, and the operator is made aware by displaying with a lamp or buzzer that the same communication protocol identification data is already stored. You can.

Further, the subaddress information used for the 15DN line can also be used as the communication protocol identification data for determining whether or not the communication protocol information to be used is stored. By using the subaddress information, you can check whether communication protocol information is stored or not without using a special device.

In the above explanation, we used the packet transmission method as an example, but the switching equipment may be a circuit switching method or a packet switching method, and any communication line such as analog, digital, packet, etc. can be used. The communication protocol information storage unit 5 may be a built-in memory made of a semiconductor, an external storage device such as a hard disk device, a removable magnetic card, an IC card, or the like.

(Effects of the Invention) As explained above, according to the present invention, the communication protocol information used by the communication terminal device is transmitted to the line switching device, and upon receiving this transmission, the communication protocol information used is stored in correspondence with the communication terminal device. However, during communication, if the communication rules used by the sending side communication terminal device and the communication rules used by the receiving side communication terminal device differ, the transmitted communication data is changed to the communication data according to the communication rule used by the receiving side communication terminal device. Since the conversion is performed, there is no need for processing such as conversion in accordance with the communication protocol of the other party at the sending side communication terminal device and the receiving side 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, whether it is necessary to store communication agreement information is determined based on whether or not communication agreement identification data corresponding to the same communication agreement information is already stored in the communication agreement information storage means. This has the effect of being able to make a decision without examining the content of the information, and avoiding storing communication protocol information redundantly.

[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 an explanatory diagram of a communication procedure at the time of communication protocol registration to explain the operation in an embodiment of the present invention. FIG. 4 is a schematic diagram illustrating the storage contents of the communication protocol information storage unit in one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Exchange, 2a, 2b, and 2C... Communication terminal device, 11... Communication protocol information storage means, 13... Discrimination means, 14-1... First writing means, 14-2.
...Second writing means, 15...Conversion means.

Claims (1)

[Claims] In a circuit switching device that selects and connects and releases multiple communication lines, communication protocol information and communication protocol identification data corresponding to the communication protocol information used by a communication terminal device connected to the circuit switching device via the communication line. a communication agreement information storage means for storing communication agreement information in correspondence with communication terminal device information; and a determination unit for determining whether or not the same communication agreement identification data as the transmitted communication agreement identification data is already stored in the communication agreement information storage means. and when it is determined that the transmitted communication agreement identification data is not stored, the communication agreement identification data and the communication agreement information corresponding to the communication agreement identification data are stored in the communication agreement information storage means and correspond to the communication terminal device information. and, when it is determined that the communication agreement identification data that is the same as the communication agreement identification data that has been sent, is already stored, the communication agreement that transmits the communication agreement identification data corresponding to the same communication agreement identification data. A second writing means for writing terminal device information into the communication agreement information storage means, and a second writing means for writing the information of the terminal device into the communication agreement information storage means, and referring to the communication agreement identification data stored in the communication agreement information storage means during communication to write communication agreement information when communication is based on different communication agreements. Converting means for converting the transmission communication data from the transmitting side communication terminal device into communication data according to the communication protocol used by the receiving side communication terminal device by referring to the communication protocol information stored in the storage means and transmitting the communication data. Characteristic line switching equipment.