WO2001095606A1

WO2001095606A1 - Data communication system

Info

Publication number: WO2001095606A1
Application number: PCT/JP2001/004703
Authority: WO
Inventors: Kazuo Ogawa
Original assignee: Dennougumi Ltd.
Priority date: 2000-06-05
Filing date: 2001-06-04
Publication date: 2001-12-13
Also published as: AU2001260707A1; JP2001345950A

Abstract

A data terminal apparatus comprising a data processor connected to a data terminal, a telephone connected to a telephone terminal, a terminal adaptor with a built-in DSU which is connected to an analog terminal and a digital terminal and a modem with which the analog termina1 is connected to the data terminal, and the digital terminal is connected to the telephone terminal, characterized in that a ca11 signal is transmitted via the analog terminal by using one of the data processor and the telephone, and connected, if arrangement is to be made, it is made by using the telephone and, after the arrangement if the arrangement is made and immediately if the arrangement is omitted, the call signal is transmitted from the data processor via the data terminal and the digital terminal while the data are transmitted from the data processor via the modem and the analog terminal, and the data are continuously transmitted via the analog terminal if the connection via the digital terminal is unsuccessful, and the data are transmitted via the digital terminal and a cutoff signal is transmitted to the modem if the connection via the digital terminal is successful.

Description

Specification

Data Communication System Technical Field

The present invention relates to a data terminal device for performing data communication between terminals connected to a telephone line in which an ISDN line and a PSTN line coexist, and a storage medium incorporated in the device. Background art

Conventionally, data communication using a telephone line has generally been performed only by transmitting and receiving digital data by modulating the digital data into a PSTN signal through a modem. For this reason, when performing data communication, there was no doubt that data communication would not be possible due to differences in communication methods, regardless of the communication speed. On the other hand, with the spread of the Internet, demands for higher communication speeds, lower prices for terminal equipment, and lower fees for communications have advanced, leading to the development of Integrated Services Digital Services (ISDN). The line has begun to spread. The I SDN line is a high-speed, high-quality telephone line compared to the conventional PSTN (Public Switch Network) network, and will become more widespread in the future. Is expected to be a telephone line. The equipment that converts the protocol of the I SDN line is a terminal adapter and an exchange. In addition, there are two communication modes, one for talking and analog transmission in the 3 kHz band, and the other for digital communication at 64 kb / s, both of which are different from the PSTN line.

I When performing data communication using a telephone line that has a mixture of SDN and PSTN lines, the following eight combinations exist.

The first combination uses a PSTN line on both the transmitting and receiving sides, transmits via a modem together, and pre-registers for communication.

The second combination uses a PSTN line for both the transmitting and receiving sides and transmits both via a modem. This is a method for omitting prior communication applications.

The third combination is a method in which a transmission is made in advance on a PSTN line and a reception is made on an I SDN data line.

The fourth combination is a method in which the transmission is PSTN and the reception is the ISDN line, and the advance communication application is omitted.

The fifth combination is a method in which communication is preliminarily applied for data transmission on the ISDN line and reception on the PSTN data line.

The sixth combination is a method of omitting the advance communication application by using the ISDN line for transmission and the PSTN line for reception.

The seventh combination uses an ISDN line on both the transmitting and receiving sides, and sends and receives data overnight as a digital day and night through a DSU with a built-in terminal DSU to sign up for communication in advance. When all of the telephones are converted to the SDN in the future, only this combination and the eighth combination described below will be available, but they are still few.

The eighth combination is a system in which both the transmitting and receiving sides use an ISDN line, and transmit and receive data as digital data via both DSU built-in terminal adapters, thereby omitting the need for advance communication.

At present, the following problems have occurred in the above eight combinations.

The first and second combinations are already implemented and can not cause any problems, so they are omitted here.

The third combination, in which the transmitting side is a PS TN line, the receiving side is ISDN line data communication, and the method in which the transmitting side makes an agreement with the receiving side in advance, will be described with reference to FIG. The sender uses telephone B 42 to place a call to the receiver. The telephone B42 transmits the PSTN signal to the exchange 40 via the TEL terminal 54 of the modem 16, the line connector 24, and the PSTN line 38. The exchange 40 converts the PSTN signal of the telephone B 42 into a call mode I SDN signal because the transmission side is a PS TN line and the reception side is an I SDN line, and converts the PSTN signal through the I SDN line 36 and the line connector 24 into a DSN line. U Send to built-in terminal adapter 18. Since the terminal adapter 18 with built-in DSU converts the received I SDN signal into the speech mode, it converts it into a PSTN signal and transmits it to the telephone A 32 via the analog port 20, and the telephone A 32 is called. The transmitting side makes a request to start data communication when the receiving side answers the telephone A32. After the application, the transmitting side operates the data processing device B44 while lifting the handset of the telephone B42 to start data communication. The modem 16 modulates digital data received through a port 58 for transmitting and receiving a digital signal transmitted by the data processing device into a PSTN signal, and transmits the PSTN signal to the line used for the application. Here, even if the receiving side operates the data processing device A 34 to set it in the receiving state, the data transmitted from the data processing device B 44 is not transmitted to the data processing device A 34 but transmitted to the telephone A 32. In other words, in the third combination, the transmitting side is a PSTN line, the receiving side is data communication on an ISDN line, and data communication is not possible with a method in which the transmitting side makes an agreement with the receiving side in advance.

Referring to FIG. 5, a description will be given of a method of the fourth combination, in which the transmitting side is a PSTN line, the receiving side is data communication on an ISDN line, and the transmitting side omits prior agreement with the receiving side with reference to FIG. The transmitting side operates the data processing device B 44 to call the receiving side. The modem 16 modulates the digital data received via the port 58 for transmitting and receiving digital signals transmitted by the data processing apparatus into a PSTN signal, and transmits the PSTN signal to the exchange 40 via the line connector 24 and the PSTN line 38. The exchange 40 converts the PSTN signal of the modem 16 into the ISDN signal in the call mode because the transmitting side is a PSTN line and the receiving side is an ISDN line, and the DSU terminal via the ISDN line 36 and the line connector 24. Send to adapter 18. Since the terminal adapter 18 with a built-in DSU converts the received I SDN signal into the speech mode, it converts it into a PSTN signal and transmits it to the telephone A 32 via the analog port 20, and the telephone A 32 is called. When the receiver answers the telephone A32, you will hear the PSTN signal of modem 16 transmitted. Here, the reception JJ operates the data processing device A 34 to set the data The data transmitted from the processing device B44 is transmitted to the telephone A32 without being transmitted to the data processing device A34. That is, in the fourth combination, the transmitting side is the PSTN line, the receiving side is the data communication of the ISDN line, and the transmitting side omits the prior agreement with the receiving side, so that the data communication is impossible.

The method of the fifth combination, in which the transmitting side is an ISDN line, the receiving side is data communication on a PSTN line, and the transmitting side makes an agreement with the receiving side in advance, will be described with reference to FIG. The sender uses telephone A32 to place a call to the receiver. The terminal adapter 18 with a built-in DSU converts the PSTN signal transmitted by the telephone A32 and received via the analog port 20 into an ISDN signal in a talk mode, and transmits the signal to the exchange 40 via the line connector 24 and the ISDN line 36. . The exchange 40 converts the ISDN signal in the call mode into a PS TN signal, and converts the PS TN line 38 and the line connector 24 into the modem, because the transmission side is a call mode I SDN signal and the reception side is a PSTN line. When transmitted to telephone B42 via 16 and TEL terminal 54, telephone B42 is called. The transmitting side makes an agreement to start data communication when the receiving side answers the telephone entrance of telephone B42. After the application, the receiver operates the data processor B44 while lifting the handset of the telephone B42, so that the connection is established via the data processor B44 and the port 58 for transmitting and receiving digital signals. The modem 16. is ready for data communication using the line used for the application. Since the transmitting side is an I SDN line, another channel can be used in addition to the channel used for the application. Therefore, the data processing device A34 is operated, and another call is made to the same telephone number of the receiving side again using another empty channel. However, PSTN line 38 is blocked for use for signing up and cannot be connected. Therefore, the receiver temporarily hangs up the handset of the telephone B42, releases the PSTN line 38, and waits until a call is received again. The transmitting side disconnects the telephone once and operates the data processing device A 34 again to call the same telephone number again. The DSU built-in terminal adapter 18 converts the digital data transmitted by the data processing unit A 34 and received via the digital port 22 into an ISDN signal in the digital communication mode. The data is transmitted to the exchange 40 via the line connector 24 and the ISDN line 36. Since the transmitting side is in the digital communication mode and the receiving side is a PSTN line, switching apparatus 40 notifies the transmitting side that there is no connectable device and disconnects the line. Therefore, the telephone B42 is not called and the data processing device B44 is not called. In other words, data communication is not possible with the fifth combination, where the sending side is an ISDN line, the receiving side is a data communication over the PSTN line, and the sending side makes an advance agreement with the receiving side. It is.

In the sixth combination, the transmitting side is an ISDN line and the receiving side? Referring to FIG. 5, a description will be given, with reference to FIG. 5, of an STN line data communication method in which the transmitting side omits prior agreement with the receiving side. The transmitting side operates the data processing device A 34 to call the receiving side. The DSU built-in terminal adapter 18 converts the digital data transmitted by the data processing unit A 34 and received via the digital port 22 into an ISDN signal in the digital communication mode, and the digital signal is transmitted via the line connector 24 and the ISDN line 36. Send to exchange 40. Since the transmitting side is in the digital communication mode and the receiving side is a PSTN line, the exchange 40 notifies the transmitting side that there is no connectable device and disconnects the line. Therefore, the telephone B42 is not called and the data processing device B44 is not called. In other words, in the sixth combination, the transmitting side is an ISDN line, the receiving side is a data communication of a PSTN line, and the transmitting side omits prior agreement with the receiving side, data communication is not possible. is there.

The method of the seventh combination, in which the transmitting side is an ISDN line, the receiving side is data communication on the ISDN line, and the transmitting side makes an agreement with the receiving side in advance, will be described with reference to FIG. The sender uses telephone A32 to call the receiver. The terminal adapter A46 with built-in DSU converts the PSTN signal transmitted by the telephone A32 and received via the analog port 20 into an ISDN signal in the talk mode, and transmitted to the exchange 40 via the line connector 24 and the ISDN line 36. I do. Exchange 40 sends ,! ! Since both the receiving and receiving sides are ISDN lines, the ISDN line 36 and line connector 24 are Via the DSU built-in terminal adapter B48. The terminal adapter B48 with DSU converts the received ISDN signal to the telephone B42 via the analog port 20 after converting the received ISDN signal into the PSTN signal and transmitting it to the telephone B42 via the analog port 20. . The transmitting side agrees to start data communication when the receiving side answers the telephone entrance of telephone B42. Since both transmitting and receiving sides are I SDN lines, another channel can be used in addition to the channel used for the application. By operating the data processing device B44, the receiving side sets the data processing device B44 and the terminal adapter B48 with a built-in DSU connected via the digital port 22 to a state in which data communication can be performed, and another empty state. Wait for an incoming call to the channel. The transmitting side operates the data processing device A34 to call again to the same telephone number of the receiving side using another empty channel. The DSU built-in terminal adapter A46 converts the digital data transmitted by the data processing device A34 and received via the digital port 22 into an ISDN signal in the digital communication mode, via the line connector 24 and the ISDN line 36. Send to exchange 40. Since both the transmitting side and the receiving side are ISDN lines, the exchange 40 transmits the signal to the DSU built-in terminal adapter B 48 via the ISDN line 36 and the line connector 24 as it is. Since the ISDN signal received by the DSU built-in terminal adapter B48 is in the digital communication mode, it is converted to digital data and transmitted via the digital port 22, and the data processing device B44 is called. The digital data transmitted from the data processing device A 34 can be received. That is, in the seventh combination, the transmitting side is the ISDN line, the receiving side is the data communication of the ISDN line, and the method in which the transmitting side makes an agreement with the receiving side in advance can perform the data communication.

Referring to FIG. 6, a description will be given of a method of the eighth combination, in which the transmitting side is an ISDN line, the receiving side is data communication on the ISDN line, and the transmitting side omits prior agreement with the receiving side with reference to FIG. The transmitting side operates the data processing device A 34 to call the receiving side. The DSU built-in terminal adapter A46 converts the digital data transmitted by the data processing unit A34 and received via the digital port 22 into an ISD in digital communication mode. The signal is converted to an N signal and transmitted to the exchange 40 via the line connector 24 and the ISDN line 36. Since both the transmitting side and the receiving side are ISDN lines, the exchange 40 transmits the signal to the DSU built-in terminal adapter B 48 via the ISDN line 36 and the line connector 24 as it is. The terminal adapter B48 with built-in DSU converts the received ISDN signal into digital data because it is in the digital communication mode, and transmits it via the digital port 22. That is, telephone B 42 connected to analog port 20 does not receive a call and therefore does not ring. Therefore, the receiving side cannot know that the data has arrived. In other words, in the eighth combination, the transmitting side is an ISDN network, the receiving side is an ISDN network, and the transmitting side omits prior agreement with the receiving side. Data communication is not possible unless device B44 is kept in a state where data communication is always possible.

In the above first to eighth combinations, data communication is not possible unless both the transmitting side and the receiving side use a modem or make an application using a terminal adapter with a built-in DSU. There is a problem that there is.

Therefore, an object of the present invention is to provide the same data terminal device and the same computer program for controlling the data terminal device in data communication, regardless of whether the transmitting side and the receiving side are I SDN lines or PSTN lines. And communication can be performed in the same procedure using the terminal device, the communication can be performed at the maximum communication speed in the combination thereof, and the communication can be performed with or without prior application. In providing data communication systems. Disclosure of the invention

In order to solve the above problems, a data terminal device according to the present invention includes a data processing device connected to a data terminal, a telephone connected to a telephone terminal, and a terminal adapter with a built-in DSU connected to an analog terminal and a digital terminal. Data having a modem for connecting an analog terminal and a data terminal and for connecting a digital terminal and a telephone terminal. In the terminal device, the calling signal is transmitted via the analog terminal using either the data processing device or the telephone, connected, and when making an application, the application is made using the telephone, If an application is made, after the application is made, and if the application is omitted, the data is transmitted from the data processing device via the data terminal, modem and analog terminal, and the call signal is processed. If the data is transmitted from the device via the data terminal and the digital terminal and the connection via the digital terminal fails, the data is continuously transmitted via the analog terminal and the connection via the digital terminal succeeds. In this case, a data terminal device is provided which transmits data through a digital terminal and transmits a disconnection signal to a modem.

If the line connecting the terminal device is a PSTN line, the DSU terminal adapter is not required, and the digital terminal may not be connected to any of the terminals, and the analog terminal may be connected to the PSTN line.

The telephone receives the incoming signal via the analog terminal, connects to it, makes an application using the telephone when making an application, makes an application when applying, and then makes an application. If omitted, immediately monitor whether an incoming call signal has been received by the data processing device via the digital terminal while receiving data to the data processing device via the analog terminal, the modem and the data terminal. If the signal is not received through the digital terminal, the reception of the data through the analog terminal is continued, and if the incoming call signal is received through the digital terminal, the digital signal is received. A connection may be made via the terminal, data may be received via the digital terminal, and a disconnection signal may be sent to the modem. A data processing device connected to the data terminal, a telephone connected to the telephone terminal, a terminal adapter with a built-in DSU connected to the analog terminal and digital terminal, and a digital terminal and telephone terminal connected to the analog terminal and the data terminal. A storage medium incorporated in the data processing device for storing a computer program for controlling a data terminal device having a modem for connecting the data processing device to the data terminal device; Use one to route the call signal to the analog If you make an application, you must make an application using the telephone, make an application, make an application, or if you omit the application, immediately A call is sent from the data processing device via the data terminal and the digital terminal while the data processing device transmits the data via the data terminal and the modem and the analog terminal, and the connection via the digital terminal. If the connection fails via the analog terminal, the data is transmitted via the digital terminal, and the disconnection signal is transmitted. A storage medium storing a computer program characterized by being transmitted by a modem is provided.

The telephone receives the incoming signal via the analog terminal, connects to it, makes an application using the telephone when making an application, makes an application when applying, and then makes an application. If omitted, the data processing device receives the data via the analog terminal, the modem and the data terminal immediately, and monitors whether or not the incoming signal is received via the digital terminal. If the signal is not received via the digital terminal, the reception of data via the analog terminal is continued, and if the incoming call signal is received via the digital terminal, the signal is received via the digital terminal. The connection may be made, the data may be received via the digital terminal, and the disconnection signal may be transmitted to the modem. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a configuration diagram of a data terminal device according to the present invention,

FIG. 2 is a configuration diagram after a possible design change of the data terminal device according to the present invention,

FIG. 3 is a flowchart showing a data communication procedure on the transmitting side using the data terminal device according to the present invention;

FIG. 4 is a flowchart showing a data communication procedure on the receiving side using the data terminal device according to the present invention, Fig. 5 is a block diagram of the conventional data communication on the SDN line and PSTN line.

FIG. 6 is a configuration diagram when conventional data communication is performed between I SDN lines, FIG. 7 is a configuration diagram when data communication according to the present invention is performed between PS TN lines, and FIG. 8 is an I SDN line. Configuration diagram when data communication of the present invention is performed on

FIG. 9 is a configuration diagram when data communication of the present invention is performed between ISDN lines. BEST MODE FOR CARRYING OUT THE INVENTION

An embodiment of the present invention will be described with reference to the drawings with respect to an example of an apparatus and an example of a method thereof. FIG. 1 shows the configuration of the data terminal device 2 according to the present invention.

The data terminal 2 is a data processing device 10 connected to a data terminal 8, a telephone 6 connected to a telephone terminal 4, a terminal adapter 18 with a built-in DSU connected to an analog terminal 12 and a digital terminal 14. It has a modem 16 for connecting the analog terminal 12 and the data terminal 8 and for connecting the digital terminal 14 and the telephone terminal 4. A data processing unit 10 is connected to the data terminal 8. The data terminal 8 is a terminal through which the data processing device 10 exchanges a digital signal with the modem 16 or the digital terminal 14.

The data processing device 10 is connected to the data terminal 8. The data processing device 10 is a personal computer, a game machine, an electronic calculator, or another device, which displays characters, displays still images, displays moving images, performs music, performs mathematical calculations, or communicates. By implementing these combinations, a storage medium for storing software such as a program for operating the modem 16 and the DSU built-in evening terminal adapter 18 is incorporated.

Connect telephone 6 to telephone terminal 4. Telephone terminal 4 connects phone 6 to modem 16 Or analog terminal 12 for exchanging PSTN signals.

Telephone 6 connects to telephone terminal 4. The telephone 6 is used in order to know when data has arrived on the receiving side and to operate the data processing device 10 when using the telephone in the application before data communication and omitting the application.

The analog terminal 12 is connected to the analog port 20. The analog terminal 12 is a terminal through which the analog port 20 exchanges a PSTN signal with the modem 16 or the telephone 4. The analog terminal 12 is electrically connected to the modem 16 and the telephone terminal 4. Similar effects can be obtained by inserting and switching a device such as a relay or other switching switch in the middle between the connection between the analog terminal 12 and the modem 16 and the connection between the analog terminal 12 and the telephone terminal 4. When this data terminal device 2 is connected to a PSTN line, the analog terminal 12 is connected to a PSTN line 38.

Digital terminal 14 is connected to digital port 22. The digital terminal 14 is a terminal through which the digital port 22 exchanges digital signals with the modem 16 or the data terminal 8. Digital terminal 14 is electrically connected to modem 16 and data terminal 8. Similar effects can be obtained by inserting a device such as a relay or other switching switch in the middle between the connection between the digital terminal 14 and the modem 16 and the connection between the digital terminal 14 and the data terminal 8. When connecting the terminal device 2 to a PSTN line, the digital terminal 14 is not connected to any of them.

The DSU built-in terminal adapter 18 has the function of converting the PSTN signal received from the analog port 20 into the ISDN signal of the talk mode and transmitting it from the line connector 24, and the function of converting the digital data received from the digital port 22 into the digital communication mode. A function to convert to an SDN signal and send it from the line connector 24, a function to determine the mode of the ISDN signal received from the line connector 24, and a function to convert the ISDN signal in the talk mode to a PSTN signal and analog Function to send to port 20 and convert ISDN signal in digital communication mode to digital data and send to digital port 22 It has a function to do. The same effect can be obtained by using a DSU (line connection device) and a terminal adapter instead of the DSU built-in terminal adapter 18. When this data terminal device 2 is connected to a PSTN line, the terminal adapter 18 with a built-in DSU is unnecessary.

The modem 16 has a function of modulating digital data received from the data terminal 8 into a PSTN signal and transmitting the PSTN signal to the analog terminal 12, and a function of demodulating the PSTN signal received from the analog terminal 12 into digital data and converting the data to a data terminal 8. It has the function of sending to

In the internal connection method of the data terminal 2 according to the present invention, connecting the digital port 22 directly to the data processor 10 without connecting to the digital terminal 14 as shown in FIG. They have the same function.

FIG. 3 shows a data communication procedure on the transmitting side using the data terminal device 2 according to the present invention. A call signal is transmitted via the analog terminal 12 using either the data processing device 10 or the telephone 6 (S1).

If the receiving side does not answer the telephone ("NO" in S2), the processing is stopped (END). In the case of the method of making an application ("YES" in S3), ask the other party whether to perform data communication (S4). If the data communication is refused ("N〇" in S4), cancel the processing (EN D).

When performing data communication ("YES" in S4 or "NO" in S3), the data is transmitted from the data processing device 10 via the data terminal 8, the modem 16 and the analog terminal 12 ( S 6).

Here, the data communication is established.

Further, a call signal is transmitted from the data processing device 10 via the data terminal 8 and the digital terminal 14 while performing data communication (S8).

In other words, check whether connection is possible with the digital communication mode ISDN. This is because high-speed and large-capacity communication is possible.

If one of the transmitting and receiving sides is a PS TN line, the connection via digital terminal 14 Since the connection fails ("NO" in S10), in this case, the transmission of the data via the analog terminal 12 is continued (S22).

When the communication ends ("YES" in S23), the processing ends (END).

If both the transmitting and receiving sides are I SDN lines, another channel can be used in addition to the channel used in (S6), and connection through the digital terminal 14 succeeds. YES "), in this case, the data is transmitted via the digital terminal 14 (S12).

Here, since the 64 kbit Zs data communication in the ISDN digital communication mode has been established, the disconnection signal is transmitted to the modem 16 (S14), and the channel used in (S6) and the channel used in (S8) are used. It is possible to switch to the 128 kb it / s overnight communication of the I SDN digital communication mode that bundles the current channels.

If the terminal adapter with a built-in DSU does not shift to 128 kb / t Zs data communication ("1 ^ 〇" at 316), continue with 64 kb / t Z s data communication (S 24

When the DSU built-in terminal adapter shifts to 128 kbit / s data communication ("YES" in S16), data is transmitted at 128kbit / s (S18). When the communication ends ("YES" in S20), the processing ends (END).

FIG. 4 shows a data communication procedure on the receiving side using the data terminal device 2 according to the present invention. The telephone signal is received by the telephone 6 via the analog terminal 12 (S39).

If a voice is heard when the call is answered ("YES" in S40), an application is made and if the overnight communication is refused ("NO" in S41), the processing is stopped (END).

When performing data communication ("YES" in S41 or "NO" in S40), the data processing device 10 is operated to enable data communication (S42). The data is received by the data processing device 10 via the analog terminal 12, the modem 16, and the data terminal 8 (S44).

Whether the incoming call signal was received via digital terminal 14 while performing further data communication Monitor whether it is.

If at least one of the transmitting and receiving sides is a PS TN line, the incoming call signal is not received via the digital terminal 1.4 ("NO" in S46), so in this case, the data is received via the analog terminal 12 (S56).

When the communication ends ("YES" in S57), the processing ends (END).

If both the transmitting and receiving sides are I SDN lines, another channel can be used in addition to the channel used in (S44), so that the incoming call signal is received via the digital terminal 14 (S46). YES "), in this case, the data is received via the digital terminal 14 (S48).

Here, since the 64 kb itZs data communication in the ISDN digital communication mode has been established, a disconnection signal is transmitted to the modem 16 (S 50), and the channel used in (S 44) and the channel used in (S 48) are used. It is possible to make the transition to the 128 kb iTZs overnight communication of the I SDN digital communication mode that bundles channels.

If the terminal adapter with a built-in DSU has not shifted to 128 kbz Zs data communication ("NO" in S52), the 64 kbit Zs data communication is continued (S58

) o

If the DSU built-in terminal adapter shifts to 128kbits data communication ("YES" in S52), it receives data at 128kbitsZs (S54).

When the communication ends ("YES" in S55), the processing ends (END).

Further, an example in which the present invention is applied to combinations of an ISDN line and a PSTN line and eight combinations depending on the presence or absence of a contract will be described with reference to FIGS. 7, 8, and 9. FIG. Referring to FIG. 7, the method of the first combination, in which the transmitting side is a PS TN line, the receiving side is data communication on the PS TN line, and the transmitting side makes an agreement with the receiving side in advance will be described. The transmitting side operates the data processing device A 34 to call the receiving side. The modem A 50 modulates the digital data transmitted by the data processing device A 34 and received via the data terminal 8 into a PSTN signal, and connects the analog terminal 12 and the PSTN line 38 to each other. Via the exchange 40. Since both the transmission side and the reception side of the exchange 40 are PS TN lines, when the transmission is directly made to the telephone B 42 via the PS TN line 38 and the analog terminal 12 and the telephone terminal 4, the telephone B 42 Incoming call. The sender uses telephone A32, which is electrically connected to the line used for making a call via telephone terminal 4, and starts data communication when the receiver comes out of the telephone outlet of telephone B42. Make an agreement to do so. After the application, the transmitting side operates the data processing device A3 while lifting the handset of the telephone A32, so that the modem A50 transmits the data from the data processing device A34 and transmits via the data terminal 8. It modulates the received digital data into a PSTN signal and transmits it to the electrically connected line used for the application. After signing up, the receiving side operates the data processing device B 44 while lifting the handset of the telephone B 42, so that the modem B 52 is used for the electrically connected signing. The PSTN signal received via the line is demodulated into digital data and transmitted to the data processing device B44 via the data terminal 8. Here, data communication is established, so the receiver is placed on both the transmitting and receiving sides. The data processor A34 re-calls the same telephone number on the receiving side again via the data terminal 8 and the digital terminal 14 while performing the data communication, but the digital terminal 14 is connected to any of them. Since the connection has not been established, the connection via the digital terminal 14 fails, and the data communication is continued. The data processing device B44 monitors whether or not an incoming call signal has been received via the digital terminal 14 and the data terminal 8 while performing the data communication, and the digital terminal 14 is connected to any of them. Since there is no reception, the data communication is continued because it is not received. As described above, in the first combination, the transmitting side is a PSTN line, the receiving side is data communication on the PSTN line, and the transmitting side makes an advance agreement with the receiving side, and the ISDN connection in the digital communication mode is established. Even if it fails, data communication is possible.

The method of the second combination, in which the transmitting side is a PSTN line, the receiving side is data communication on the PSTN line, and the transmitting side omits the previous agreement with the receiving side will be described with reference to FIG. The transmitting side operates the data processing device A 34 to make a call to the receiving side. The modem A 50 modulates the digital signal transmitted by the data processing device A 34 and received via the data terminal 8 into a PSTN signal, and transmits the PSTN signal to the exchange 40 via the analog terminal 12 and the PSTN line 38. Since both the transmitting side and the receiving side of the exchange 40 are PSTN lines, if the signal is transmitted to the telephone B 42 via the PSTN line 38 and the analog terminal 12 and the telephone terminal 4 as it is, the telephone B 42 is called. When the receiver comes out of the telephone B42, the sound of the PSTN signal of the modem A50 can be heard.By operating the data processing device B44 with the telephone B42 held up, the modem B52 becomes electrically connected. It demodulates the PSTN signal received via the called line connected to the digital signal into digital data and transmits it to the data processing device B 4 via the data terminal 8. At this point, the data communication has been established, and the receiver hangs up. The data processing device A 34 again calls the same telephone number on the receiving side via the data terminal 8 and the digital terminal 14 while performing the data communication, but the digital terminal 14 is connected to any of them. Since the connection has not been made, the connection via the digital terminal 14 fails, and the data communication is continued. While performing the data communication, the data processing device B 44 monitors whether an incoming call signal has been received via the digital terminal 14 and the data terminal 8, but since the digital terminal 14 is not connected to any of them. Since the data is not received, the data communication is continued. As described above, in the second combination, in which the transmitting side is the PSTN line, the receiving side is the data communication of the PSTN line, and the transmitting side omits prior agreement with the receiving side, the digital communication mode is used. It is natural that data communication is possible even if the I SDN connection fails.

The third combination, in which the transmitting side is a PSTN line, the receiving side is data communication on an ISDN line, and the transmitting side makes a preliminary agreement with the receiving side will be described with reference to FIG. The transmitting side operates the data processing device B 44 to call the receiving side. The modem B 52 modulates the digital data transmitted by the data processing device B 44 and received via the data terminal 8 into a PSTN signal, and transmitted to the exchange 40 via the analog terminal 12 and the PSTN line 38. I do. In the exchange 40, the transmitting side is a PS TN line and the receiving side Is an I SDN line, the PSTN signal of the data processing device B 44 is converted into an I SDN signal of the communication card, and transmitted to the DSU built-in terminal adapter 18 via the I SDN line 36 and the line connector 24. . Since the terminal adapter 18 with built-in DSU converts the received I SDN signal into the speech mode, it converts it into a PSTN signal and transmits it to the telephone A 32 via the analog port 20, and the telephone A 32 is called. The sender uses telephone B42 electrically connected to the line used for calling via telephone terminal 4 and starts data communication when the receiver comes out of telephone A32. Make a request to that effect. After the application, the transmitting side operates the data processing device B44 while lifting the handset of the telephone B42, whereby the modem B52 transmits the digital data transmitted by the data processing device B44 and received via the data terminal 8. The data is modulated into a PSTN signal and transmitted to the electrically connected line used for subscription. After signing up, the receiving side operates the data processing unit A34 while lifting the handset of the telephone A32, so that the modem A50 connects via the line used for the electrically connected signing. The received PS TN signal is demodulated overnight and transmitted to the data processing device A 34 via the data terminal 8. At this point, the communication has been established, so both the sending and receiving sides hang up. The data processing device B 44 again calls the same telephone number on the receiving side via the data terminal 8 and the digital terminal 14 while performing the data communication, but since the digital terminal 14 is not connected to any of them. Since the connection through the digital terminal 14 fails, the data communication is continued. While performing the data communication, the data processing device A 34 monitors whether or not the incoming call signal has been received via the digital terminal 14 and the data terminal 8, but continues the data communication since it does not receive it. As described above, in the third combination, the transmitting side is a PSTN line, the receiving side is a data communication over an ISDN line, and the transmitting side makes an agreement with the receiving side in advance. It goes without saying that I SDN connection will fail, but data communication is possible.

In the fourth combination, the transmitting side is a PS TN line and the receiving side is an ISDN line. Referring to FIG. 8, a communication method in which the transmitting side omits prior agreement with the receiving side will be described. The transmitting side operates the data processing device B 44 to call the receiving side. The modem B 52 modulates the digital data transmitted by the data processing device B 44 and received via the data terminal 8 into a PSTN signal, and transmits the PSTN signal to the exchange 40 via the analog terminal 12 and the PSTN line 38. Since the transmitting side is a PSTN line and the receiving side is an ISDN line, the exchange 40 converts the PSTN signal of the data processing device B 44 into an ISDN signal in a talk mode, and transmits it via the ISDN line 36 and the line connector 24. To the DSU built-in terminal adapter 18. Since the terminal adapter 18 with built-in DSU converts the received I SDN signal into the speech mode, it converts it into a PSTN signal and transmits it to the telephone A 32 via the analog port 20, and the telephone A 32 is called. When the receiving side comes out of the telephone outlet of telephone A32, the PSTN signal of modem B52 can be heard.Therefore, by operating data processing device A34 while lifting the telephone A32, modem A50 is The PSTN signal received via the incoming line that is electrically connected is demodulated into digital data and transmitted to the data processing device A34 via the data terminal 8. At this point, the data communication has been established, and the receiver hangs up. The data processing device B 44 again calls the same telephone number on the receiving side via the data terminal 8 and the digital terminal 14 while performing the data communication, but the digital terminal 14 is connected to any of them. Therefore, the connection via the digital terminal 14 fails, and the data communication is continued. The data processing device A 34 monitors whether or not an incoming call signal has been received via the digital terminal 14 and the data terminal 8 while performing the data communication. However, the data communication device A 34 continues the data communication since it has not received the incoming signal. As described above, in the fourth combination, in which the transmitting side is the PSTN line, the receiving side is the data communication of the ISDN line, and the transmitting side omits the prior agreement with the receiving side, the digital communication mode ISDN Data communication is possible even if the connection fails.

In the fifth combination, see Figure 8 for the method in which the transmitting side is an ISDN line, the receiving side is a PSTN line data communication, and the transmitting side makes an advance agreement with the receiving side. I will explain. The transmitting side operates the data processing device A 34 to call the receiving side. The modem A 50 modulates the digital signal transmitted by the data processing device A 34 and received via the data terminal 8 into a PSTN signal, and transmits the PSTN signal to the analog terminal 12 and the analog port 20. The DSU built-in terminal adapter 18 converts the PSTN signal received via the analog port 20 into an ISDN signal in the talk mode, and transmits the signal to the exchange 40 via the line connector 24 and the ISDN line 36. The exchange 40 converts the ISDN signal in the call mode into the PSTN signal on the transmitting side because the transmitting side is the ISDN signal in the talking mode and the receiving side is the PSTN line, and the PSTN line 38 and the analog terminal 12 and the telephone terminal 4 are used. When the call is transmitted to the telephone B42, the telephone B42 is called. The sender uses the telephone A32 electrically connected to the line used for calling via the telephone terminal 4 and starts data communication when the receiver comes out of the telephone outlet of the telephone B42. Make a request to that effect. After the application, the transmitting side operates the data processing device A34 while lifting the handset of the telephone A32, so that the modem A50 transmits the digital data transmitted by the data processing device A34 and received via the data terminal 8. It modulates the rude signal into a PSTN signal and sends it to the electrically connected line used for subscription. After signing up, the receiving side operates the data processing device B44 while lifting the handset of the telephone B42, so that the modem B52 is connected to the electrically connected line used for signing. The received PSTN signal is demodulated into digital data and transmitted to the data processor B44 via the data terminal 8. Since the data communication has been established, the receiver is placed on both the transmitting and receiving sides. The data processing device A 34 again calls the same telephone number on the receiving side via the data terminal 8, the digital terminal 14 and the digital port 22 while performing the data communication. The DSU built-in terminal adapter 18 converts the digital data received via the digital port 22 into a digital communication mode ISDN signal, and uses another channel via the line connector 24 and the ISDN line 36. Send to exchange 40. Since the transmission side is in the digital communication mode and the reception side is a PSTN line, the exchange 40 informs the transmission side that there is no connectable device. Notice and disconnect the line. The data processing device A 34 continues the data communication because the connection via the digital terminal 14 fails. The data processor B44 monitors whether or not an incoming call signal has been received via the digital terminal 14 and the data terminal 8 while performing the data communication described above, but since the digital terminal 14 is not connected to any of them. Since the data communication is not received, the data communication is continued. Thus, in the fifth combination, in which the transmitting side is an ISDN line, the receiving side is a PSTN line for overnight communication, and the transmitting side makes an advance agreement with the receiving side, the digital communication mode It is natural that the ISDN connection fails, but data communication is possible.

The method of the sixth combination, in which the transmitting side is an ISDN line, the receiving side is PSTN line data communication, and the transmitting side omits prior agreement with the receiving side, will be described with reference to FIG. The transmitting side operates the data processing device A 34 to call the receiving side. The modem A 50 modulates the digital data transmitted by the data processing device A 34 and received via the data terminal 8 into a PSTN signal, and transmits the PSTN signal to the analog terminal 12 and the analog port 20. The DSU built-in terminal adapter 18 converts the PSTN signal received via the analog port 20 into an ISDN signal in a talk mode, and transmits it to the exchange 40 via the line connector 24 and the ISDN line 36. The exchange 40 converts the ISDN signal of the call mode into a PSTN signal on the transmitting side because the transmitting side is the ISDN signal of the calling mode and the receiving side is the PSTN line. When the call is transmitted to the telephone B42 via the talk terminal 4, the telephone B42 is called. When the receiver enters the telephone outlet of telephone B 42, the PSTN signal of modem A 50 can be heard, so by operating data processing device B 44 while lifting the handset of telephone B 42, modem B 52 The PSTN signal received via the electrically connected incoming call line is demodulated into digital data and transmitted to the data processing device B44 via the data terminal 8. At this point, the data communication has been established, and the receiver hangs up. The data processing device A 34 calls the same telephone number again on the receiving side via the data terminal 8, the digital terminal 14 and the digital port 22 while performing the data communication. Do it again. The DSU built-in terminal adapter 18 converts the digital data received through the digital port 22 into an ISDN signal in the digital communication mode, and connects the line connector 24 and the ISDN line 36 using another channel. Through the exchange 40. Since the transmitting side is in the digital communication mode and the receiving side is a PSTN line, the exchange 40 notifies the transmitting side that there is no connectable device and disconnects the line. Since the connection via the digital terminal 14 fails, the data processing device A34 continues the data communication. While performing the data communication, the data processing device B 44 monitors whether or not the incoming call signal has been received via the digital terminal 14 and the data terminal 8, but since the digital terminal 14 is not connected to any of them, Since the data is not received, the data communication is continued. Thus, in the sixth combination, the transmitting side is an ISDN circuit, the receiving side is data communication on the PSTN line, and the transmitting side makes an agreement with the receiving side in advance. Data communication is possible even if the SDN connection fails.

With reference to FIG. 9, a description will be given, with reference to FIG. 9, of a method of the seventh combination, in which the transmitting side is an ISDN line, the receiving side is data communication on the ISDN line, and the transmitting side makes an agreement with the receiving side in advance. The transmitting side operates the data processing device A 34 to call the receiving side. The modem A 50 modulates digital data transmitted by the data processing device A 34 and received via the data terminal .8 into a PSTN signal, and transmits the PSTN signal to the analog terminal 12 and the analog port 20. The DSU built-in terminal adapter 18 converts the PSTN signal received via the analog port 20 into an I SDN signal in a talk mode, and transmits it to the exchange 40 via the line connector 24 and the I SDN line 36. Since both the transmitting side and the receiving side are ISDN lines, the exchange 40 transmits the signal to the DSU built-in terminal adapter B 48 via the ISDN line 36 and the line connector 24 as it is. Since the ISDN signal received by the DSU built-in DSU B48 is in the talk mode, it is converted to a PSTN signal and transmitted to the telephone B42 via the analog port 20, and the telephone B42 is called. The transmitting side is electrically connected to the line used for outgoing calls via telephone terminal 4. When the receiving side comes out of the telephone outlet of telephone B42 using telephone A32, a request is made to start data communication. After the application, the transmitting side operates the data processing device A34 with the telephone A32 lifted, so that the modem A50 transmits the data transmitted by the data processing device A34 and received via the data terminal 8. It modulates the evening data into a PSTN signal and sends it to the line that is electrically connected and used for subscription. After signing up, the receiving side operates the data processing device B 44 while lifting the handset of the telephone B 42, so that the modem B 52 connects via the line used for the electrically connected signing. The received PSTN signal is demodulated into digital data and transmitted to the data processing device B44 via the data terminal 8. At this point, the communication has been established, so both the transmitting and receiving sides hang up. The data processor B44 monitors whether or not an incoming call signal is received via the digital terminal 14 and the data terminal 8 while performing the data communication. The data processing device A 34 again calls the same telephone number on the receiving side via the data terminal 8, the digital terminal 14 and the digital port 22 while performing the data communication. The DSU built-in terminal adapter A46 converts the digital data received via digital port 22 into an ISDN signal in digital communication mode, and uses another channel via the line connector 24 and the ISDN line 36. Send to exchange 40. Since both the transmitting side and the receiving side are ISDN lines, the exchange 40 directly transmits the signal to the DSU built-in terminal adapter B 48 via the ISDN line 36 and the line connector 24. The terminal adapter B48 with built-in DSU converts the received ISDN signal into the digital communication mode because it is in the digital communication mode, and when it is transmitted via the digital data port 22, the data processing device B44 is called. Then, the digital data transmitted by the data processing device A 34 can be received. This means that 64 kb it / s data communication in the I SDN digital communication mode has been established. The data processing device A 34 transmits a disconnection signal to the modem A 50 to enable the transition to the 128 kb it / s data communication in the ISDN digital communication mode in which the idle channel is bundled with the channel. The data processing device B 44 sends a disconnection signal to the modem B 52, The transition to the 128 kbit / s data communication of the idle channel and the ISDN digital communication mode in which the channels are bundled is made possible. The terminal adapter with built-in DSU A46 and the terminal adapter with built-in DSU B48 shift to ISDN 128 kb it / s as required. Thus, in the seventh combination, in which the transmitting side is an ISDN line, the receiving side is data communication on the ISDN line, and the transmitting side makes an agreement with the receiving side in advance, the digital communication mode I Data communication by SDN connection is possible. The method of the eighth combination, in which the transmitting side is an ISDN line, the receiving side is data communication on the ISDN line, and the transmitting side omits prior agreement with the receiving side, will be described with reference to FIG. The transmitting side operates the data processing device A 34 to call the receiving side. The modem A 50 modulates digital data transmitted by the data processing device A 34 and received via the data terminal 8 into a PSTN signal and transmits the PSTN signal to the analog terminal 12 and the analog port 20. The DSU built-in terminal adapter 18 converts the PSTN signal received via the analog port 20 into an ISDN signal in a talk mode, and transmits it to the exchange 40 via the line connector 24 and the ISDN line 36. Since both the transmitting side and the receiving side are ISDN lines, the exchange 40 transmits the signal to the DSU built-in terminal adapter B 48 via the ISDN line 36 and the line connector 24 as it is. The terminal adapter B48 with DSU converts the received ISDN signal to the telephone B42 via the analog port 20 after converting the ISDN signal into the PSTN signal and transmitting to the telephone B42 via the analog port 20. When the receiver enters the telephone outlet of telephone B42, the PSTN signal of modem A 50 can be heard, and by operating the data processing device B44 with the telephone B42 held up, the modem B52 becomes electrically connected. The demodulator demodulates the PSTN signal received via the incoming line connected to the terminal to digital data, and transmits the demodulated signal to the data processing device B44 via the data terminal 8. At this point, the communication is established, so the receiver hangs up. The data processor B44 monitors whether or not an incoming call signal is received via the digital terminal 14 and the data terminal 8 while performing the data communication. The data processing device A 34 communicates with the data terminal 8 Call again to the same telephone number on the receiving side via terminal 14 and digit port 22. The terminal adapter A46 with a built-in DSU converts the digital data received via the digital port 22 into an ISDN signal in the digital communication mode, and uses the other channel via the line connector 24 and the ISDN line 36. Send to exchange 40. Since both the transmitting side and the receiving side are ISDN lines, the exchange 40 transmits the signal to the DSU built-in terminal adapter B48 via the ISDN line 36 and the line connector 24 as it is. The terminal adapter B48 with built-in DSU converts the received ISDN signal into a digital communication mode because it is in digital communication mode and transmits it via the digital port 22. Then, the digital data transmitted by the data processing device A 34 can be received. Here, 64 kb itZZ data communication in the I SDN digital communication mode has been established. The data processing device A 34 transmits a disconnection signal to the modem A 50 so that the idle channel and the ISDN digital communication mode in which the channels are bundled can be shifted to the 128 kb it Zs data communication. The data processing device B44 transmits a disconnection signal to the modem B52 so that the idle channel and the ISDN digital communication mode in which the channels are bundled can be shifted to 128 kbit / s data communication. . The DSU built-in terminal adapter A46 and the DSU built-in terminal adapter B48 migrate to 128kbitZs as required. In this manner, in the eighth combination, in which the transmitting side is an ISDN line, the receiving side is data communication over the ISDN line, and the transmitting side omits prior agreement with the receiving side, the digital communication mode Data communication by I SDN connection is possible.

As described in detail above, by using the present invention, data communication becomes possible in any of the eight combinations depending on the combination of the ISDN line and the PSTN line and the presence or absence of an application. That is, by implementing the data communication system of the present invention, when performing data communication, the same data terminal device and the same data terminal device are used regardless of whether the transmitting side and the receiving side are ISDN lines or PSTN lines. The same computer to control. It can communicate with the same program using the same procedure using the data terminal device, In addition, communication is possible at the maximum communication speed in the combination, and communication is possible regardless of whether or not there is a prior agreement.

Claims

The scope of the claims

1. A data processing device connected to the data terminal, a telephone connected to the telephone terminal, a terminal adapter with a built-in DSU connected to the analog and digital terminals, a connection between the analog terminal and the data terminal, and a connection between the digital terminal and the telephone In a data terminal device that has a modem that connects to a terminal, when a calling signal is transmitted via an analog terminal using one of a data processing device and a telephone, connected, and an application is made. In the case of making an application using a telephone, if the application is made, the application is made, and if the application is omitted, the data is immediately sent from the data processing device via the data terminal and the modem and analog terminals. While transmitting, the calling signal was transmitted from the data processing device via the data terminal and the digital terminal, and the connection via the digital terminal failed. If the connection via the digital terminal is successful, the data is transmitted via the digital terminal and the disconnection signal is transmitted to the modem if the connection via the digital terminal is successful. A data terminal device comprising:

2. The telephone receives the incoming call signal via the analog terminal, connects to it, makes an application using the telephone when making an application, and makes an application after making an application. If the matching is omitted, it is immediately determined whether the incoming call signal was received by the data processing device via the digital terminal while receiving the data via the analog terminal, the modem and the data terminal. Monitoring, if the incoming signal is not received through the digital terminal, the reception of data is continued through the analog terminal, and the incoming signal is received through the digital terminal. 2. The data terminal device according to claim 1, wherein in such a case, a connection is made through a digital terminal, data is received through a digital terminal, and a disconnection signal is transmitted to a modem.

3. The data processing device connected to the data terminal, the telephone connected to the telephone terminal, the DSU built-in terminal adapter connected to the analog and digital terminals, the analog terminal connected to the data terminal, and the digital terminal connected to the telephone. A computer program for controlling a data terminal device having a modem connected to a terminal. In a storage medium incorporated in the data processing device, the computer program transmits a call signal through an analog terminal using one of the data processing device and a telephone, and connects the When making an application, use the telephone to make an application. After making an application, make an application. If you omit the application, immediately send the data from the data processor to the data terminal. A call signal is transmitted from the data processing device via the data terminal and the digital terminal while transmitting via the modem and the analog terminal.If the connection via the digital terminal fails, the data is transmitted to the analog terminal. If the connection via the digital terminal is successful, the data is transmitted via the digital terminal and disconnected. Storage medium storing a computer program, characterized in that to send No. modem.

4. The telephone receives the incoming call signal via the analog terminal, connects to it, makes an application using the telephone when making an application, and makes an application after making an application. If the matching is omitted, the data processing device receives the data via the analog terminal, the modem and the data terminal, and immediately monitors whether the incoming signal is received via the digital terminal. If the call signal is not received through the digital terminal, the reception of the data through the analog terminal is continued, and if the incoming call signal is received through the digital terminal, the data is received through the digital terminal. 4. The storage medium storing a computer program according to claim 3, wherein the connection is established, data is received via a digital terminal, and a disconnection signal is transmitted to a modem.