JPH027694A - Telephone system - Google Patents

Abstract

PURPOSE:To devise a system such that connection between a telephone exchange and an exclusive telephone set is able to be implemented by 2 wires by sending a control signal to control various functions of a telephone exchange from a telephone set as a dial signal. CONSTITUTION:When a command button 4 of a telephone set 3 is operated four times, a central control circuit 7 generates a dial signal such as '0' corresponding to predetermined external line dialing and sends it via a voice speech circuit 6. The dial signal is detected by a dial signal detection circuit 9 of the telephone exchange 2 and is given to a central control circuit 10. The central control circuit 10 decodes a dial signal to recognize it to be an external line call, controls a voice channel switching circuit 13 to connect a telephone line 14 and a telephone set 3 via a speech line 11. Thus, 2-wire system is adopted for the connection between the telephone exchange and the exclusive telephone set.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a telephone system comprising a telephone exchange device connected to a telephone line and a dedicated telephone set connected to the telephone exchange device.

<Prior art> In general, in this type of telephone system, a telephone exchange device, the so-called main device, has various functions such as making outside calls, inter-extension calls, and holding calls. It performs various operations such as switching and connecting telephones on lines or extensions.

FIG. 2 is a block diagram of such a conventional telephone system.

This telephone system 15 is composed of a simple telephone exchange 17 connected to a telephone line I6, a so-called main device, and a dedicated telephone 18 connected to this telephone exchange 17. and the telephone exchange device 17 are connected by four wires: a pair of communication lines 19 and a pair of data/power lines 20.

When a corresponding command button 21 serving as a function operation section of the telephone 18 is operated in order to control various functions of the telephone exchange 17, such as holding, making an outside call, and interchanging internal calls, the central control circuit (CPU) At 22, the data is converted into corresponding digital data (control signals) and transmitted via the communication circuit 23 to the data/power line 20 to the telephone exchange I7.

In the telephone exchange device 17, the digital data is given to a central control circuit (CPU) 25 via a communication circuit 24,
A central control circuit 25 controls each section to perform corresponding operations. In addition, 26 is a dial button for calling, 27
28 is a voice communication path switching circuit for switching connection between an extension line and an outside line; 29 is a power supply circuit for supplying power to the telephone 3;

As described above, such a conventional telephone system 15 is a four-wire system consisting of a pair of lines 19 for voice calls and a pair of lines 20 for data and power, so that the telephone exchange equipment When attempting to connect a two-wire terminal device such as a facsimile, modem, or general telephone, there is a problem in that an expensive conversion adapter that converts from four wires to two wires is required.

<Object of the Invention> The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a telephone system to which a two-wire terminal device can be connected without the need for a conversion adapter. do.

<Structure of the Invention> In order to achieve the above-mentioned object, the present invention includes a telephone exchange device connected to a telephone line, a function operation unit operated to control various functions of this telephone exchange device, and , a telephone system comprising a telephone set having a dial operation section for calling, the telephone set being provided with a sending means for sending out a corresponding dial signal in accordance with the operation of the function operation section, and the telephone exchange device comprising: , a control means for detecting the dial signal and performing corresponding control is provided, and the telephone set is connected to the telephone exchange device by a pair of wires.

According to the above configuration, the control signal for controlling the telephone exchange equipment is transmitted as a dial signal instead of as digital data as in the past, so that the control signal for controlling the telephone exchange equipment is transmitted as a dial signal. It becomes possible to connect to a telephone using a two-wire system, and thereby a two-wire terminal device such as a facsimile or modem can be connected without using a conversion adapter.

<Example> Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention, and the telephone system l of this embodiment is composed of a simple telephone exchange device (main device) 2 and a telephone 3 dedicated to this telephone exchange device. be done.

The dedicated telephone 3 is equipped with a telephone exchange device 2, as in the conventional example.
A plurality of command buttons 4 are provided as function operation units operated to control various functions such as making an outside call, inter-extension calls, and holding calls, and a dial button 5 is provided as a dial operation unit for calling. is provided.

In the telephone 3 of this embodiment, when the command button 4 is operated, instead of converting it into digital data and transmitting it as in the conventional example, a predetermined dial signal corresponding to the operation of the command button 4 is sent. A central control circuit (CPU) 7 is provided as a sending means for sending a corresponding dial signal to the voice call circuit 6 in response to the operation of the command button 4.

This central control circuit 7 controls each part as in the conventional case, and also sends out a corresponding dial signal in response to the operation of the above-mentioned command button 4.

On the other hand, the telephone exchange device 2 is provided with a control means 8 that detects a dial signal transmitted in response to the operation of the command button 4 and performs corresponding control.
is composed of a dial signal detection circuit 9 and a central control circuit (CPU) 10 that controls each section based on the dial signal detected by the dial signal detection circuit 9.

In this way, since the signal for controlling the telephone exchange device 2 is transmitted not as digital data as in the conventional example, but as a combination of dial signals, the pair of communication lines 11
It becomes possible to perform control using Furthermore, power is supplied from the power supply circuit 12 of the telephone exchange device 2 through the pair of communication lines 11 .

” In the telephone system 1 having the configuration described in 1, the telephone 3
When the command button 4, for example, the command button 4 for making an outside line call, is operated, the central control circuit 7 forms a dial signal, for example, "0", corresponding to a predetermined outside line call, and initiates a voice call. It is sent out via circuit 6. This dial signal is detected by a dial signal detection circuit 9 of the telephone exchange device 2 and provided to a central control circuit 10. This central control circuit IO decodes the dial signal and recognizes that it is an outside line call, and the voice communication path switching circuit 13
to connect the telephone line I4 and the telephone set 3 via the telephone line 11.

Other functions are similarly performed using dial signals. Note that the dial signals corresponding to various functions of the telephone exchange device 2 are predetermined in an appropriate combination so as not to be confused with dial signals for calling.

In this way, the telephone exchange device 2 and the dedicated telephone 3 are of a two-wire type connected by a pair of wires 11, so that two-wire terminal devices such as facsimiles and modems can be used to make telephone calls without using a conversion adapter. It can be connected to a telephone exchange, and various functions of the telephone exchange can be controlled by dialing a facsimile or modem. That is, since dial signals corresponding to various functions of the telephone exchange device are predetermined, dialing operations using a facsimile or modem can be performed to obtain these dial signals.

<Effects of the Invention> As described above, according to the present invention, control signals for controlling various functions of a telephone exchange device are transmitted from a telephone as a dial signal instead of digital data as in the past. , it is possible to connect a telephone exchange equipment and a dedicated telephone to a two-wire system, and thereby to connect two-wire terminal devices such as a facsimile, modem, or ordinary telephone without using a conversion adapter. become.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional example. ■...Telephone system, 2...Telephone exchange equipment, 3. Telephone, 4...Command button (function operation section).

Claims (1)

[Claims] (1) A telephone system consisting of a telephone exchange device connected to a telephone line, and a telephone set having a function operation section operated to control various functions of this telephone exchange device and a dial operation section for calling. The telephone set is provided with a sending means for sending out a corresponding dial signal in response to the operation of the function operation section, and the telephone exchange apparatus is provided with a control means that detects the dial signal and performs corresponding control. is provided, and the telephone is provided with:
A telephone system, characterized in that it is connected to the telephone exchange device by a pair of lines.