JPH03265341A - Data communication device connecting system - Google Patents

Abstract

PURPOSE:To allow a data communication terminal equipment having a standard telephone interface to make communication via an exclusive terminal equipment by providing a connection section connecting a data communication equipment having the standard telephone interface to an exclusive terminal equipment, an off-hook detection section, a switching section and a selection signal reception section receiving a selection signal from the data communication equipment to the system. CONSTITUTION:When a data communication equipment 7 having a standard telephone interface is hooked off, it is detected by an off-hook detection section 82. A changeover section 83 is switched to the data communication equipment 7 by the detection of hook-off. The selection signal sent from the data communication equipment 7 is received by a selection signal reception section 84, the selection signal is sent from an exclusive terminal equipment 8 to an exchange 9 via a control channel 102, and the exchange 9 applies the exchange connection of network based on the selection signal. Thus, the data communication terminal equipment having the standard telephone interface is connected to the exchange 9 and communicated via the exclusive terminal equipment 8 even in the exchange system employing a communication interface different from the standard telephone interface between the exclusive terminal equipment 8 and the exchange 9.

Description

[Detailed Description of the Invention] [Summary] This invention relates to a data communication equipment connection method that enables communication using data communication equipment such as facsimiles and modems via a dedicated terminal of an exchange, and provides a standard telephone connection method between the dedicated terminal and the exchange equipment. In a switching system that uses a communication interface different from the standard telephone interface, the purpose is to connect a data communication terminal with a standard telephone interface to the exchange equipment via a dedicated terminal to enable communication. In a switching system equipped with a communication interface for , the dedicated terminal includes a connection section for connecting a data communication device having a standard telephone interface, an off-hook detection section for detecting off-hook of the data communication device connected to the connection section, A switching unit for connecting and switching a communication channel to a communication circuit of a dedicated terminal or a data communication device, and a selection signal receiving unit for receiving a selection signal from the data communication device,
When off-hook of the data communication device is detected by the off-hook detection section, the switching section switches the connection to the data communication device side, and the selection signal received by the selection signal reception section is notified to the switching device via the control channel. configured so that

[Industrial Application Field] The present invention relates to a data communication equipment connection system that enables communication using data communication equipment such as a facsimile or modem via a dedicated terminal of an exchange.

In recent years, as terminals connected to exchanges have become more sophisticated, the interfaces between terminals and exchanges have become more specialized, and specialized terminals that are different from the standard telephone interfaces used in analog data communication devices such as facsimiles and modems have been developed. communication interfaces are increasingly being used. Even in an exchange system using such a communication interface for a dedicated terminal, it is necessary to be able to perform communication using conventional analog data communication equipment via this dedicated terminal.

[Prior Art] In conventional exchanges, standard telephone interfaces are used for communications by analog data communication devices that handle voice band signals, such as facsimiles and modems. This t! In the 4-$ telephone interface, control signals such as dial information are also sent and received between the terminal and the exchange via a telephone line that generally sends and receives call signals.

[Problems to be Solved by the Invention] In recent years, interfaces between terminals and exchanges have become more specialized, and the ratio of dedicated terminals with various interface protocols has been increasing. However, the problem with this dedicated terminal communication interface is that it is no longer possible to connect analog data communication equipment that was connected to the conventional standard telephone interface.

In order to solve this problem, a dedicated terminal interface/standard telephone interface exchange adapter device has been devised, but this method requires an external adapter device, which increases costs, takes up installation space, and requires dedicated terminal interface/standard telephone interface exchange adapter devices. Because it is impossible to completely simulate the terminal interface, it is not possible to receive numbers from analog data communication equipment, and for this reason, it is only possible to make calls by entering numbers from the dial input means provided on the dedicated terminal. There was a problem.

Therefore, an object of the present invention is to provide a system in which a communication interface different from a standard telephone interface is used between a dedicated terminal and an exchange, so that a data communication terminal with a standard telephone interface can be connected to the exchange equipment via a dedicated terminal and communicated. It is to make it.

[Means for Solving the Problems] FIGS. 1, 2, and 3 are diagrams each explaining the principle of the present invention.

A data communication device connection method according to the present invention is shown in FIG. 1 as one form. In a switching system equipped with a communication interface for a dedicated terminal different from a standard telephone interface, the dedicated terminal 8 has a connection section 81. for connecting a data communication device 7 having a standard telephone interface. An off-hook detection unit 82 detects off-hook of the data communication device 7 connected to the connection unit 81, a switching unit 83 connects and switches the communication channel 101 to the communication circuit 86 of the dedicated terminal 8 or the data communication device 7, and the data communication device a selection signal receiving section 84 that receives a selection signal from 7;
The data communication device 7 is detected by the off-hook detection unit 82.
When off-hook is detected, the switching unit 83 switches the connection to the data communication equipment 7 side, and the selection signal received by the selection signal receiving unit 84 is notified to the switching device 9 via the control channel 102. It is composed of

As another form of the data communication device connection method according to the present invention, as shown in FIG. 2, in a switching system equipped with a communication interface for a dedicated terminal different from a standard telephone interface, the dedicated terminal 8 Connection unit 81 for connecting data communication equipment 7 having a standard telephone interface
, an off-hook detection section 82 that detects off-hook of the data communication device 7 connected to the connection section 81, and a switching section 83 that switches the connection of the communication channel 101 to the communication circuit 86 of the dedicated terminal 8 or the data communication device 7. , the switching device 9 is equipped with a selection signal receiving unit 91 that receives a selection signal from the communication channel 101, and when the off-hook detection unit 82 detects that the data communication device 7 is off-hook, the switching unit 83 switches the data communication device The connection is switched to the 7 side, and the off-hook detection information is transmitted to the control channel l.
The exchange device 9 is notified via O2, and the exchange device 9 selects the call channel 101 from the dedicated terminal 8 by selecting the signal receiving unit 91.
The selection signal receiving section 91 is configured to receive a selection signal sent from the data communication device 7 via the communication channel 101.

As another form of the data communication equipment connection method according to the present invention, as shown in FIG. 3, in the switching system of the form shown in FIG. A selection signal input section 86 is provided for inputting a selection signal on behalf of the communication device, and the selection signal inputted at the selection signal input section 86 is sent to the exchange device 9 via the control channel 102, and the selection signal is sent to the exchange device 9 via the control channel 102. is equipped with a determining unit 92 that determines whether the sent selection signal is via the communication channel or the control channel, and when the selection signal is sent from the data communication device 7 via the control channel, the selection signal receiving unit 91 and the communication channel 101 are configured to be disconnected from each other.

[Function] In the exchange system of the form shown in FIG.
This off-hook detection causes the switching unit 83 to
is switched to the data communication device 7 side. The selection signal sent from the data communication device 7 is received by the selection signal receiving section 84, and this selection signal is sent from the dedicated terminal 8 to the control channel 1.
02 to the switching device 9, and the switching device 9 performs switching connection of the network 93 based on this selection signal.

In the exchange system shown in FIG. 2, when the data communication device 7 goes off-hook, the off-hook detection section 82
This off-hook detection causes the switching unit 83 to
is switched to the data communication device 7 side. The selection signal sent from the data communication device 7 is sent to the switching device 9 via the communication channel via the switching section 83, and is received by the selection signal receiving section 91 of the switching device 9. The switching device 9 analyzes the selection signal received by the selection signal receiving section 91, and performs switching connection of the network 93 based on the result.

In the exchange system of the form shown in FIG. 3, when the data communication equipment does not have a selection signal exit function, the selection signal is inputted by the selection signal human power section 86 in place of the data communication equipment, and the selection signal is controlled. It is sent to the exchange device 9 via the channel. In the switching device 9, when the determining unit 92 determines that the selection signal is sent via the control channel, it is learned that the data communication device does not have a selection signal sending function, and the selection signal receiving unit 91, which has been in an invalid pending state, release.

[Example] Hereinafter, the present invention will be described in detail with reference to the drawings. In addition,
Throughout the figures described below, the same reference numbers represent circuit elements with the same function.

FIG. 4 shows an exchange system using a data communication equipment connection method as an embodiment of the present invention.

In FIG. 4, 1 is a dedicated terminal, 6 is a switching device,
The dedicated terminal 1 and the exchange device 6 are connected by a communication interface line 4 for the dedicated terminal. This communication interface line 4 consists of a communication line 41 shown by a solid line and a control line 42 shown by a dotted line, and a communication signal is carried on the communication line 41.
Further, a control signal such as a selection signal is carried on the control line 42. Although the communication line 41 and the control line 42 are shown as separate physical signal lines in the figure, they represent the function of a channel, and are not connected to digital technology or CO■ (Control line). 0ve
They may be multiplexed onto one transmission path using the r Voice technology.

3.3° is an analog data communication device such as a facsimile or modem, which communicates using a standard telephone interface.

The dedicated terminal 1 includes a communication circuit 11 that has a call function using a handset or a speaker, a connector 15 that is a connection port with a data communication device 3, and an off-hook circuit that detects an off-hook signal from the data communication device 3 connected to the connector 15. Detection unit 14 , call switching unit 12 that connects and switches the communication line 41 between the communication circuit 11 and the data communication device 3 , and numerical information from the data communication device 3 sent to the communication line 41 via the call switching unit 12 a numeric receiving section 2 that receives (selection signal of dial pulse or PB low signal), and
It is configured to include a control section 13 that controls each functional section within the terminal and controls communication with the exchange device 6.

The switching device 6 also includes a network 61 for switching and connecting the communication line 41, a central control unit 62 that controls various types of control within the switching device 6 including switching and connecting the network 61, and the like.

The operation of this embodiment system will be described below with reference to the flowchart of FIG. Here, FIG. 5 is a flowchart showing the procedure for connecting data communication equipment in the embodiment system.

Assume that you have now taken the data communication device 3 off-hook and dialed the destination number. Then, the off-hook detection section 14 first detects an off-hook signal from the data communication device 3 (step S2), and notifies the control section 13 of the off-hook detection (step S3). In response to this off-hook detection, the control unit 13 switches the call switching unit 12 to the data communication device 3.
(step S4), and sets the number receiving unit 2 to a state where it can receive number information (step S4).
5).

In this state, when a dial signal is sent from the data communication device 3 (step S6), this dial signal is received by the number receiving section 2 via the call switching section 12, and the number receiving section 2 receives the received dial signal. is sent to the control unit 13 (
Step S7). Then, the control unit 13 sends this numerical signal to the central control unit 62 of the exchange device 6 via the control line 42 (step S8).

In the switching device 6, the central control unit 62 analyzes the received numeric signal and controls the connection of the network 61 so that the communication line 41 is connected to an appropriate route according to the numeric signal (step S9), thereby making a call. Communication between the data communication device 3 on the side and the data communication device 3 on the other side is established and the communication becomes active (step 5IO).

Through the above processing, the analog data communication device 3 having a standard telephone interface can be connected to the switching device 6 via a dedicated terminal having a communication interface different from the standard telephone interface.

Various modifications are possible in implementing the invention. For example, in the above embodiment, the number receiving section 2 is provided on the dedicated terminal 1 side, but the present invention is not limited to this.
It is also possible to provide this number receiving section 2 on the exchange device 6 side, and in this case, the number receiving section 2 can be shared by a large number of dedicated terminals, thereby making effective use of resources. can be achieved.

Another embodiment of the present invention in which the number receiving section 2 is provided on the switching device 6 side in this way is shown in FIG. As shown in the figure, the number receiving section 2 is provided in the exchange device 6, and the connection between the number receiving section 2 and the telephone call [41] is turned on/off by a connection switch 21. One connection switch 21 is provided for each communication line from other dedicated terminals.
By turning on/off these connection switches, the numeric receiving section 2 is shared by not only the dedicated terminal 1 but also other dedicated terminals (not shown). Further, in this embodiment, modem devices 31 and 32 are used as data communication equipment 3.3°, and personal computers 51 and 52 as communication terminals are connected to these modem devices 31 and 32, respectively. .

The operation of this embodiment will be explained below with reference to the flowchart of FIG. 7 showing the procedure for connecting data communication equipment.

When the personal computer 51 dials the destination number that accommodates the other party's personal computer 52 (step 521), the modem device 31 receives this dialed number, creates a closed loop, and sends an off-hook signal to the dedicated terminal 1. (step 523).

As a result, the off-hook detection unit 14 detects that the modem device 31 has gone off-hook, and notifies the control unit 13 of this (step 524). When the control unit 13 is notified of off-hook, it switches the call switching unit 12 to the modem device 31 side (Step 525), and further notifies the central control unit 62 via the control line 42 that the modem device 31 is off-hook. step 526).

As a result, the central control unit 62 turns on the connection switch 21 corresponding to the dedicated terminal 1 that has sent the off-hook notification, connects the telephone line 41 of the dedicated terminal 1 to the number receiving unit 2, and thereby the number receiving unit 2 connects to the modem. The device 31 is placed in a state where it can receive numerical signals from the device 31 (step 527).

From modem device 31 to connection destination dial digits (modem device 3
2) is sent as a PB double signal (step 528), this dialed number is received by the number receiving unit 2 via the telephone line 41 (step 529), and the number receiving unit 2 The received dial digits are sent to the central control unit 62 (step 530).

The central control unit 62 analyzes the received dial digit information and instructs the network 61 to connect the modem device 32, which is the destination of the call, to the telephone line 41.Step 53
1), the network 61 sets up a call path according to this instruction (step 532). As a result, communication between the modem device 31 and the modem device 32 is established, and the personal computer 51 and the personal computer 52 enter a communication active state (step 533).

FIG. 8 shows yet another embodiment of the invention. This embodiment also has a numeric receiving section 2 provided on the exchange device 6 side so that it can be shared by a large number of dedicated terminals, but the difference from the embodiment shown in FIG. 6 is that in this embodiment, Instead of connecting the number receiving section 2 to the telephone line 41 by the connection switch 21, the number receiving section 2 is installed on the outgoing line side of the network 61 and connected to the network 61 under the control of the central control section 62.
The communication line 41 is connected to the telephone line 41 via the telephone line 41. With this configuration, it is possible to eliminate the need for a connection switch that was required for each communication line.

FIG. 9 shows yet another embodiment of the invention. This embodiment is for a case where the data communication equipment does not have a dial digit sending function in the embodiment configuration shown in FIG. 6 or 7. In the case where the data communication equipment does not have a dial digit sending function, in the embodiment configuration of FIG. 6 or 7, the number receiving unit 2
Even if the terminal is connected to the telephone line 41, the dialed digits are not sent, so the connection of the digit receiving section 2 is in an invalid pending state, and during that time, other dedicated terminals are using the numeric receiving section 2. The problem is that it is no longer possible to do so. The embodiment shown in FIG. 9 solves this problem.

That is, in FIG. 9, the dedicated terminal 1 is provided with a dial input section 16 consisting of a keypad and function buttons. Note that as this dial input section 16, one that is already installed in the dedicated terminal 1 is used. The dial digits inputted in the dial input section 16 are sent to the central control section 62 of the exchange device 6 by the control section 13 via the control 1JI42.
This dial sending function is also a function that the dedicated terminal 1 inherently has.

On the other hand, the exchange device 6 is provided with a dial reception type determination section 63, and this dial reception type determination section 63 receives the dial number when the dial number is sent to the exchange device 6, and receives the dial number. The output of control line 4
2, or the modem device 3 via the telephone line 41.
Determine whether it is from 1. Note that this dial reception type determination section 63 can also be realized as a function of the central control section 62.

The operation of this embodiment device will be explained below with reference to the flowchart of FIG. 10 showing the procedure for connecting data communication equipment.

When the destination number is dialed by the personal computer 51 (step 521), the modem device 31 sends an off-hook signal to the dedicated terminal l (step 523).
, the off-hook detection unit 14 detects this off-hook and notifies the control unit 13 of it (step 524). When the control unit 13 is notified of off-hook, the control unit 13 switches the call switching unit 12
is switched to the modem device 31 side (step 525), and the off-hook of the modem device 31 is notified to the central control unit 62 (step 526).

As a result, the central control unit 62 controls the connection of the network 61 to connect the numeric receiving unit 2 to the dedicated terminal 1 that has sent the off-hook notification, thereby enabling the numeric receiving unit 2 to receive numeric signals from the modem device 31. state (step 540).

Here, the personal computer 51 or modem device 3
1 does not have a dial number information input function, the dial input section 16 on the dedicated terminal 1 performs dial input, and this dial number signal is sent from the control section 13 to the control line 42.
The data is sent to the central control unit 62 of the exchange device 6 via the central control unit 62 of the exchange device 6.

The switching equipment 6 side monitors whether dial information is received via the communication line 41 or the control line 42 (step 541), and if the dial information is not received, the call is released after a certain period of time has elapsed. The process ends (steps S42 to S544).

When the dial information is received, the dial reception type determining section 63 determines whether the dial information is input from the dial input section 16 (step 545).

When it is determined that the dial information is from the dial input section 16, the dial reception type determination section 63
and the central control unit 62 to release the connection with the communication line 41.
(step 546), which causes the central control unit 6 to
2 instructs the network 61 to release the connection of the number receiver 2 (step 547), and the network 61 releases the connection of the number receiver 2 (step 548).
). This prevents the number receiving unit 2 from entering an invalid pending state.

Next, the dial reception type determining section 63 sends the received dial digits to the central control section 62 (step 549). As a result, the central control unit 62 analyzes the received dial numeric information and instructs the network 61 to connect the modem device 32 which is the destination of the call and the telephone line 41 (step 531).
), the network 61 sets up a call bus according to this instruction (step 532). As a result, modem device 3
Communication between personal computers 51 and 32 is established, and personal computers 51 and 52 enter a live communication state (step 533).

If the dial information type determination section 63 determines that the dial information is from the modem device 31, the dial number received from the number reception section 2 is sent to the central control section 62 (step 550), and the following steps are performed. Step 331~S
34 processes are performed.

Note that the present invention applies to subscriber exchanges, private branch exchanges (PBX)
, can be applied to various systems such as key telephones.

[Effect of the Invention 1] As explained above, according to the present invention, data communication equipment having a standard telephone interface can be used even in a switching system in which a switching device and a dedicated terminal are connected through a communication interface different from a standard telephone interface. It becomes possible to connect to the exchange equipment via a dedicated terminal and perform communication. As a result, when communicating with a data communication device with a standard telephone interface, it is possible to achieve lower costs and space savings compared to the case where a dedicated terminal interface/standard telephone interface conversion device is used.

Further, according to the present invention, since numerical information can be received from a data communication device, it becomes possible to use speed dialing of a facsimile or dialing service using a telephone directory service from a personal computer.

Furthermore, when the numeric receiving section is provided on the switching device side, the numeric receiving function can be used as a shared resource of the switching system, so that it is possible to reduce the cost of the negative layer.

In addition, it is possible to connect to data communication equipment that does not have a dial information sending function by allowing dial input from a dedicated terminal, and furthermore, it is possible to prevent the number receiving section provided on the switching equipment side from being in an invalid hold state. can.

[Brief explanation of drawings]

FIGS. 1, 2, and 3 are explanatory diagrams of the principles of the present invention, FIG. 4 is a block diagram showing an exchange system of a data communication equipment connection method as an embodiment of the present invention, and FIG. FIG. 4 is a flowchart showing the connection procedure of the pig communication equipment in the embodiment system, FIG. 6 is a block diagram showing another embodiment of the present invention, and FIG. 8 is a flowchart showing a connection procedure, FIG. 8 is a flowchart showing another embodiment of the present invention, FIG. 9 is a block diagram showing still another embodiment of the present invention, and FIG. 2 is a flowchart showing a procedure for connecting data communication equipment in the embodiment system of FIG. In the figure, 1...Dedicated terminal 2...Numeric receiving section 3...Analog data communication equipment 4...Communication interface line 6 for dedicated terminal...Switching device 11...Telephone circuit 12...・Call switching section 13--Control section 14--Off-hook detection section 15--Connector 16--Dial input section 31.32--Modem device 51.52--Personal computer 61--
Network 62...Central control unit 63...Dial reception type establishment unit

Claims (1)

[Claims] 1. In a switching system equipped with a communication interface for a dedicated terminal different from a standard telephone interface, the dedicated terminal (8) is connected to a data communication device (7) having a standard telephone interface. a connection section (81), an off-hook detection section (82) that detects off-hook of the data communication device (7) connected to the connection section (81), and a communication channel (101) connected to the communication circuit (8) of the dedicated terminal (8). 86) or a switching unit that switches connection to the data communication device (7), and a selection signal receiving unit (84) that receives a selection signal from the data communication device (7), and the off-hook detection unit (82). data communication equipment (7
) is detected, the switching unit (83)
is switched to the data communication device (7) side, and
A data communication equipment connection system configured such that the selection signal received by the selection signal receiving section (84) is notified to the switching device (9) via the control channel (102). 2. In a switching system equipped with a communication interface for a dedicated terminal different from a standard telephone interface, the dedicated terminal (8) includes a connection part (81) for connecting a data communication device (7) having a standard telephone interface; an off-hook detection section (82) that detects off-hook of the data communication device (7) connected to the connection section (81); A switching unit (83) is provided to switch the connection to the data communication device (7), and the switching device (9) is provided with a selection signal receiving unit (91) that receives a selection signal from the communication channel (101). , the data communication device (7) is detected by the off-hook detection unit (82).
) is detected, the switching unit (83)
is switched to the data communication device (7) side, and
The off-hook detection information is notified to the switching device (9) via the control channel, and the switching device (9) transmits the call channel (101) from the dedicated terminal (8) to the selection signal receiving unit (91). Connect and
The data communication device (
7) receives the selection signal sent from the selection signal receiving section (9).
1) A data communication device connection method configured to receive data. 3. The dedicated terminal (8) is equipped with a selection signal input section (86) for inputting a selection signal in place of a data communication device that does not have a selection signal sending function, and the selection signal input section (86) The selection signal is sent to the switching device (9) via the control channel (102), and the switching device (9) includes a determining unit (100) that determines whether the sent selection signal is via the communication channel or the control channel. 9
2), and is configured to disconnect the selection signal receiving section (91) and the speech channel (101) when a selection signal is sent from the data communication device (7) via the control channel. 3. The data communication device connection method according to claim 2.