JPH0542864B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a communication method between a data processing device and an exchange, and more particularly to a method for transmitting and receiving control signals for connection/disconnection of communication lines.

[Prior art]

Traditionally, communication between data processing equipment and switching equipment involves
Subscriber line signaling or individual line signaling was used. On the other hand, in addition to the individual line signaling system, a common line signaling system is generally used for transmitting and receiving signals between exchanges. In the individual line signaling system, control signals etc. are transferred using an information line for data transmission and reception, but in the common line signaling system, control signals etc. are transferred using a signal line (common line) that is separate from the information line. . Therefore, the common line signaling system has advantages such as being able to transfer control signals using the common line while transmitting and receiving data over the information line, and being able to define a wide variety of signals that are not available in individual line signals. When applying the common channel signaling method, which has these advantages, to communication between data processing equipment and exchanges, it has been necessary to significantly modify the hardware and software because the data processing equipment does not support the common channel signaling method. was needed.

Figure 4 shows a conventional system configuration using line individual signaling system, where 1 is a data terminal, 2 is a switch,
3 is a data processing device, and 4 is an information line. Fifth
The figure shows the communication example of FIG. 4, and is a sequence when a call is made from the data terminal 1 to the data processing device 3. Sends a dial pulse from data terminal 1,
When exchange 2 receives the ring tone, exchange 2 sends the ring tone to data processing device 3 . In response to this ringing tone, the information line control unit 10 in the data processing device 3
detects a call and changes the state of the information line 4 to data transmission/reception, and then starts transmitting/receiving information between the data terminal 1 and the application program 9. With this configuration, control signals cannot be transmitted and received between the data processing device 3 and the exchange 2 during data communication.

[Purpose of the invention]

The present invention enables communication using the common channel signaling method without making changes to the information line control unit or application program of the data processing device by adding an adapter device to the data processing device that uses the individual line signaling method. It's about doing.

〔Example〕

FIG. 1 shows a system configuration of an embodiment of the present invention. In FIG. 1, a data terminal 1 and an exchange 2 are connected through an information line 4, and an exchange 2 and a data processing device 3 are connected through an information line 4 and a common signal line 5. The data processing device 3 has a matching device 6, a common line signal line control unit 7, a matching unit 8, an application program 9, and an information line control unit 10, and the common line signal line 5 is connected to the common line signal line control unit 7. , the information line 4 passes through the matching device 6 to the information line control unit 1.
connected to 0. The information line control unit 10 is the fourth
It is the same as the information line control unit in the figure and can control individual line signals. The matching device 6 is also connected to the matching section 8 and can receive a signal from the common line signal line control section 7 via the matching section 8. The matching device 6 transfers this signal to the information line control section 10, so that the information line control section 10 can treat the common signal line as if it were an individual signal line.

The operation shown in FIG. 1 will be explained below based on the communication examples shown in FIGS. 2 and 3. FIG. 2 shows a sequence when a data terminal makes a call, and FIG. 3 shows a sequence when a data processing device makes a call. In addition, in FIGS. 2 and 3, broken line arrows mean signals related to the common line signal line.

Data terminal calling sequence: When the data terminal 1 sends a dial pulse and the exchange 2 receives it, the exchange 2 sends a connection request signal to the data processing device 3 through the common signal line 5. In the data processing device 3, when a connection request signal is sent through the common signal line 5, a calling request is sent to the matching unit 8 via the common signal line control unit 7. Based on this, the matching section 8 instructs the matching device 6 to send a ringing tone to the information line control section 10 (ringing tone pseudo instruction). When notified of the ringing tone, the information line control unit 10 shifts the information line 4 to a state in which data can be transmitted and received, in the same way as when it is notified by the line individual signal. Thereafter, a call notification is sent from the information line control section 10 to the matching section 8 and further to the application program 9. After the calling process is completed, communication between the data terminal 1 and the application program 9 becomes possible.

Data Processing Device Calling Sequence: When a calling request is sent from the application program 9 to the matching unit 8, the matching unit 8 instructs the common line signal line control unit 7 to issue a calling request. The common line signal line control unit 7 uses the common line signal line 5 to
Sends a connection request signal to As a result, the exchange 2 uses the common channel signal line 5 to return a response signal to the common channel signal line control section 7, and the common channel signal line control section 7 notifies the matching section 8 of this. Thereafter, matching section 8 requests connection to information line control section 10 using the same method as the line individual signaling system.
In response to this, the information line control section 10 sends a calling signal and dial pulse to the information line 4 as individual line signals. However, in the common line signaling system, it is not necessary to send out a calling signal and dial pulse to the information line 4, so the matching device 6 suppresses sending out the calling signal and dial pulse to the information line control unit 10. (dial pulse sending pseudo). After that, the information line control unit 10
sends a data transmission request to the information line 4, the matching device 6 sends the response to the matching unit 8 via the information line control unit 10, and the matching unit 8 notifies the application program 9 that the call is complete 3. do. In this way, communication between the application program 9 and the data terminal 1 becomes possible.

In this way, by adding the matching device 6, the common line signal line control unit 7, and the matching unit 8 to the conventional data processing device, a common Communication using line signaling becomes possible.

Note that the above-mentioned processing of the common line signal line control unit 7, matching unit 8, and information line control unit 10 can be easily achieved by applying a control method using a program (communication control program, matching program), for example.

〔Effect of the invention〕

As explained above, according to the present invention, an adapter is added to a data processing device that uses a line individual signaling system to absorb differences in information line control methods between the line individual signaling system and the common line signaling system. Since the common line signal line can be applied while using the conventional information line control method of data processing equipment, the data processing equipment and the exchange can be directly connected through the common line signal line, and the common line signal line can be used even when data is being sent and received over the information line. It has the advantage of being able to send and receive control signals, etc. through the signal line.

[Brief explanation of the drawing]

FIG. 1 is a system configuration diagram of an embodiment of the present invention.
2 is a diagram showing an example of communication when the data terminal in FIG. 1 is called, FIG. 3 is a diagram showing an example of communication when the data processing device is called in FIG. 1, and FIG. 4 is a conventional system configuration diagram. , FIG. 5 is a diagram showing an example of communication when the data terminal in FIG. 4 is called. DESCRIPTION OF SYMBOLS 1... Data terminal, 2... Exchange, 3... Data processing device, 4... Information line, 5... Common line signal line, 6...
Matching device, 7... Common line signal line control unit, 8... Matching unit, 9... Application program, 10...
Information line control section.

Claims (1)

[Claims] 1. In a communication system between a data processing device having an information line control unit that handles individual line signals of an information line and a switch, a common line signal line for transmitting and receiving control signals in addition to the information line is used between the data processing unit and the switch. In addition to the information line control unit connected to the data processing device, there is also a common line signal line control unit that transmits and receives common line signals, a matching unit that matches the information line control unit and the common line signal line control unit, and a matching unit. A matching device is provided that controls the common line signal line to appear as an information line to the information line control unit, and controls the common line signal line to the common line signal control unit when a call is made from the exchange. Based on the signal, the matching unit establishes correspondence with the information line, and the matching device performs calling control on the information line control unit.When a call is made from the data processing device, the common line signal line control unit makes a call to the exchange via the common line signal line, and after receiving the response at the common line signal line control unit and matching unit, makes a call request to the information line control unit, and sends it out from the information line control unit. 1. A communication system between a data processing device and an exchange, characterized in that the calling signal and dial pulse sent are terminated by a matching device so that they are not sent to an information line.