JP2695033B2 - Third party automatic calling system and third party automatic calling method in ISDN - Google Patents

Description

The present invention relates generally to an ISDN switching system, and more specifically to an ISDN automatic calling system for automatically calling data communication in ISDN. Regarding

(Prior Art) A call connection in ISDN is set by a calling terminal transmitting calling information to an ISDN communication network. The non-ISDN data terminal equipment (DTE) is accommodated in the ISDN network via the ISDN terminal adapter equipment (TA). ISDN
When a communication call is set up between these two accommodated in the network, the calling circuit of the calling side data terminal device and the calling circuit of the called side data terminal device and the called side data terminal device After the call connection process is performed end-to-end between both circuits by the incoming circuit provided, the opposite communication between both data terminal devices becomes possible. In this way, the ISDN terminal adapter device has an intermediary function of converting various processes of call connection by the non-ISDN interface of the non-ISDN data terminal device into the ISND interface.

By the way, the data terminal equipment is
When performing data communication in a non-ISDN communication network accommodated in a switching network via E), an AT command according to CCITT Recommendation V.25bis or American Hayes Standard is used between the data terminal device and the data circuit terminating device. Calling procedures and incoming procedures such as schemes are used. For example, between the data terminal equipment on the calling side and the data circuit terminating equipment, a call origination request is transmitted to the data circuit terminating equipment by using the "call origination request command", and the data circuit terminating equipment and the data terminal equipment on the called side are used. An incoming call is transmitted to the data terminal device by using an "incoming call indication" with the device. Only after going through such an outgoing / incoming procedure, the opposite communication between both data terminal devices becomes possible.

(Problems to be Solved by the Invention) As described above, in the automatic calling system in the non-ISDN network, the predetermined calling procedure and the incoming call procedure are prepared for both the data terminal device and the data circuit terminating device. A data terminal device that does not have these procedures must perform the call connection process manually.

On the other hand, in ISDN, a data terminal device that does not have a calling circuit and a receiving circuit for performing call connection processing cannot automatically set a communication call. Further, there is a drawback in that the third party automatic calling method, which automatically sets the opposite communication between desired data terminal devices by remote control from a position distant from the data terminal device such as a communication center, cannot be applied.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above drawbacks of the prior art and provide an ISDN third party automatic call system in which data communication between two data terminals can be set from another terminal.

(Means for Solving the Problem) A third party automatic calling system in ISDN according to the present invention includes first terminal means connected between a terminal and ISDN,
A second terminal device accommodated in ISDN, the first terminal means converting an interface between the ISDN and the terminal,
First data communication between the terminal and another terminal by the control channel of ISDN user / network interface
And the automatic call request by the packet call of the control channel for causing the first communication means to execute the data communication.
There is a call receiving means for receiving from the second terminal means via ISDN, the second terminal means is an operation means for setting an automatic call request, and a connection between the operation means and the ISDN. Second communication means for generating a packet call of the control channel and notifying the first terminal means of the automatic call request,
When the call receiving means receives the automatic call request, the first communication means sets the data communication call connection to the other terminal by automatic calling.

According to the present invention, there is provided a third-party automatic calling system that realizes such a third-party automatic calling system in ISDN.

(Operation) According to the present invention, when a third party inputs an automatic call request from the operation means of the second terminal means, the operation means notifies the first terminal means of this by the packet call of the control channel. This request is accepted by the call accepting means of the first terminal means, and the first communication means automatically calls the ISDN, and the call connection is set to the other terminal designated by the automatic call request. . This starts the data communication.

(Embodiment) According to the present invention, data communication between two data terminals can be set from another terminal by an automatic call system. Prior to describing an embodiment of a third party automatic calling system in ISDN according to the present invention, a conventional automatic calling system will be described with reference to FIG. Shown in the figure is a data communication system based on a general communication network. The data terminal equipment (DTE) 2
1 and 22 and data circuit-terminating equipment (DCE) 23 and 24
Opposite communication is performed according to a predetermined calling procedure and calling procedure. These procedures are described in CCITT Recommendation V.25bis, JT-X, for example.
30, and AT command method (“Smart Modem 1200 Hardw
are Reference Manual ", published by Hayes Inc. (1983), etc. The data terminal device 21 on the calling side uses the data line according to the calling procedure when making a call to the data terminal device 22 on the called side. A “call request command” is sent to the terminating device 23.
The data line terminating device 23 is connected to the network 25 from its own transmission circuit.
Send to The data line terminating device 24 on the called side detects an incoming call by its terminating circuit, whereby the call connection process is performed between the data line terminating devices 23 and 24. Next, the data line terminal device 24 sends an "incoming call indication" to the data terminal device 22 to notify it of the incoming call,
After that, the data terminal devices 21 and 22 start data communication.

FIG. 4 shows a conventional call connection system in ISDN. The data terminal device 31 on the calling side receives ISDN from the transmission circuit via the interface conversion function of the terminal adapter device (TA) 33.
Call 35. Further, the data terminal device 32 on the called side receives an incoming call in the incoming circuit via the interface conversion function of the terminal adapter device 34. The data terminal devices 31 and 32 perform end-to-end call connection processing in the originating circuit and the terminating circuit, respectively, and start data communication. In such an example in which the data terminal devices 31 and 32 do not have a function capable of supporting ISDN, the terminal adapter devices 33 and 34 convert the call connection processing into ISDN compatible.

Embodiments of a third-party automatic calling system in ISDN according to the present invention will be described in detail with reference to the accompanying drawings. First
FIG. 1 is a system configuration diagram showing an embodiment of a third party automatic calling system in ISDN according to the present invention. In this embodiment,
A large number of data terminal equipment (DTE) are accommodated in the ISDN 9 through the terminal adapter equipment (TA), and in the figure, the data terminal equipments 1 and 2 and the terminal adapter equipments 3, 4 and 5 are typically shown. It is shown. The data terminal devices 1 and 2 do not have an ISDN compatible function in this embodiment,
For example, CCITT Recommendations X.21, X.21bis or X.20bis
A terminal device having an ISDN interface. Therefore, the ISDN is connected via the terminal adapter devices 3 and 4, respectively.
Connected to 9. These make up the ISDN9 terminal.

The terminal adapter device 3 basically has an interface conversion function 12, an outgoing / incoming circuit 11, and an outgoing call acceptance function 13. The interface conversion function 12 is connected to the data terminal device 1.
It is a functional unit that converts the interface between ISDN9.
The outgoing / incoming circuit 11 is a circuit that performs a call connection process for an incoming call from the ISDN 9 and an incoming call from the ISDN 9 through the control channel of the ISDN user / network interface. The call acceptance function 13 accepts a D channel packet call including a third party automatic call request for requesting an automatic call for data communication from another terminal, which will be described in detail later, that is, a third party, and causes the call origination / termination circuit 11 to receive the call. It is a functional unit that executes a third-party automatic call. The other terminal adapter device 4 may basically have the same function as the terminal adapter device 3, but in this embodiment, the terminal adapter device 4 is not provided with the call reception function.

A console (CNS) 7 is connected to the terminal adapter device 5, and this device 5 has a console control function 16 and a call request function 18 in place of the call acceptance function 11 and the interface function 12 in this embodiment. The console 7 is, for example, a terminal device having a manual operation device such as a keyboard, and in this embodiment, the operator has a function of inputting an instruction to set a third party automatic call. In this embodiment, the console 7 is accommodated as a kind of terminal in the ISDN 9 via the terminal adapter device 5. However, such a separate terminal device does not necessarily have to be provided, and may be auxiliary equipment such as an operation panel provided in the terminal adapter device 5, for example.

The console control function 16 of the terminal adapter device 5 is a function unit that controls the console 7 and receives an operator's instruction input from now on. The call origination request function 18 is a functional unit that assembles the control information necessary for the third party automatic call origination request input from the console 7 into a D channel packet to generate a packet call directed to another terminal adapter device, for example, 3. is there. The call originating / receiving circuit 17 is a circuit for transmitting a third party automatic call request to the designated terminal adapter device 3 by a D-channel packet call.

In this embodiment, the terminal adapter devices 3, 4 and 5 are
It has only the functions required to describe the invention in each given situation, but all have the same functions 11-13 and 16
To 18 may be provided. Needless to say, if the data terminal 2 is an ISDN terminal having an ISDN standard function, the data terminal 2 may be directly accommodated in the ISDN 9 without going through the adapter device 4.

When a third party automatic call request for requesting data communication to / from the data terminal device 1 is input from the console 7, the terminal adapter device 5 sends this third party automatic call request to the console. It is received by the call request function 18 through the control function 16. The call originating / receiving circuit 18 carries the control information of the third party automatic call request on the packet call of the D channel and sends it to the designated terminal adapter device 3.

The terminal adapter device 3 on the calling side receives the calling request packet call in the calling acceptance function 13. Call acceptance function 13
When the packet call confirms that the request is for a third party automatic connection to its own terminal 1, it assembles a response packet indicating that the connection request has been accepted, and the call originating / receiving circuit 11 sets D
The channel is returned to the terminal adapter device 5. At the same time, the call originating / receiving circuit 11 automatically makes a call to the called terminal adapter device 4.

More specifically, the calling / calling circuit 11 sends a call to the ISDN 9 via the interface conversion function 12, and the terminal adapter device 4 on the called side receives the incoming call at the calling / calling circuit 11 via the interface conversion function 12, The adapter devices 3 and 4 are connected for a call. Here, the data terminal device 1 and the terminal adapter device 3, and the data terminal device 2 and the terminal adapter device 4
Performs the connection process according to the connection procedure by each non-ISDN interface, and the data terminal devices 1 and 2 start data communication.

In this embodiment, the non-ISDN interfaces of the data terminal devices 1 and 2 are the terminal adapter devices 3 and 4, respectively.
Since the data is converted to the ISDN interface by the interface conversion function 12 of, the data terminal devices 1 and 2 can be applied to non-ISDN devices such as general personal computers. Since the connection between the terminal adapter device 3 and the data terminal device 1 and between the terminal adapter device 4 and the data terminal device 2 are general direct communication, the present invention naturally uses the ISDN standard terminal. Effectively applied to the system. ISDN9 may be a public network or a private network. The lines to be applied may be those of various speeds such as communication speeds of 64 kbps and 1,500 kbps, and the calls generated by this automatic calling system are various such as B channel circuit switched calls and D channel packet switched calls. You can call it. The present invention is thus effectively applied to various call types adapted to the attributes of the network 9 and the terminal 1.

FIG. 2 shows another embodiment of the present invention. In the figure, the same reference numerals as those shown in FIG. 1 have the same functions as the corresponding elements in FIG. Private branch exchanges (PBXs) 6 and 8 are accommodated in the ISDN 9 in the same status as the terminals. The former is directly connected to the data terminal device 14, and the latter is connected to the data terminal device 15 via the terminal adapter device 10.
Each is housed. From the perspective of ISDN9,
Functions as a terminal. In the present embodiment, the private branch exchange 8 has an outgoing / incoming circuit 11, an interface conversion function 12 and an outgoing call acceptance function 13. However, the private branch exchange 6 has a calling / receiving circuit 11
And has a call acceptance function 13, but an interface function
There is no 12, and instead, a terminal adapter device 10 having an interface function is connected.

Similar to the description in the embodiment shown in FIG. 1, if there is a third party automatic call request from the console 7 for requesting data communication between the data terminal device 14 and the data terminal device 2, this request is a packet request. In a form, the data is transferred from the terminal adapter device 5 to the private branch exchange 8. Upon receiving this third party automatic call request, the private branch exchange 8 requests the ISDN 9 for call connection, whereby a data communication call is established between the data terminal device 14 and the data terminal device 2. The private branch exchange 6 functions almost similarly to this, but differs from the private branch exchange 8 in that the interface conversion is executed by the terminal adapter device 10.

(Effects of the Invention) As described above, according to the present invention, since the function unit that receives the third party automatic call request is provided in the terminal adapter device or the private branch exchange as the home of the ISDN, the terminal that does not have the communication procedure is provided. It is possible to automatically make an outgoing call request from another terminal, that is, a third party. So, for example,
It can be used in a wide range of fields such as centralized control of unmanned terminals in remote areas from a centralized facility such as a center. Although the embodiment of the present invention has been described with respect to the opposite communication between two data terminal devices, the present invention is not limited to this, and may be effectively applied to non-communication communication such as broadcast communication. ,
Needless to say.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram showing an embodiment of a third party automatic calling system in ISDN according to the present invention, FIG. 2 is a system configuration diagram showing another embodiment of the present invention, and FIG. 3 is a conventional automatic calling system. FIG. 4 is an explanatory diagram of a call system, and FIG. 4 is an explanatory diagram of a conventional call connection system in ISDN. Explanation of symbols for main parts 1,2,14 …… Data terminal equipment 3,4,5,10 …… Terminal adapter equipment 23,24 …… Data line termination equipment 6,8 …… Private branch exchange 7 …… Console 9, 35 …… ISDN 25 …… General communication network

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroo Ikutame 4-11-22 Shibaura, Minato-ku, Tokyo Oki Electric Industry Co., Ltd. 1 Annex Oki Communication System Co., Ltd. (56) Reference JP-A-58-68347 (JP, A)

Claims (2)

(57) [Claims] 1. A first terminal means connected between a terminal and an ISDN, and a second terminal means accommodated in the ISDN, wherein the first terminal means comprises the ISDN and the terminal. Convert the interface between and
A first communication means for performing data communication between the terminal and another terminal by a control channel of an ISDN user / network interface, and a packet call for a control channel for causing the first communication means to execute the data communication An automatic call request by the second terminal means via the ISDN from the second terminal means, the second terminal means, the operation means for setting the automatic call request, and the operation Means and the ISDN, and second communication means for initiating a packet call of the control channel and notifying the first terminal means of the automatic call request, the call accepting means When the automatic call request is received by the first communication means, the first communication means sets a call connection for data communication by automatic call addressed to the other terminal, and a third party automatic call system in ISDN. . 2. A method of automatically calling a third party in ISDN accommodating a plurality of terminal means, the method comprising: an ISDN user / automatic call originating from a first terminal means of the plurality of terminal means. The automatic call request including the terminal numbers of the first and second terminal means for executing the data communication with the second terminal means of the plurality of terminal means by the control channel of the network / interface. The automatic call request is set by the third terminal means of the plurality of terminal means, and the automatic call request is notified to the first terminal means by the packet call of the control channel, and the first terminal means sets the automatic call request. Is accepted, the call connection for data communication is set by automatic calling to the second terminal means, and the third-party automatic calling method in ISDN is characterized.