JPS63227265A - System for connecting terminal of facsimile equipment for telephone network - Google Patents

Abstract

PURPOSE:To connect a facsimile equipment to a data terminal equipment without interposing a telephone line, by switching an incoming and outgoing call and data transmission to the facsimile equipment by the data terminal by means of a data transmission switching means. CONSTITUTION:The data terminal equipment 19 is connected to the facsimile equipment 20 for telephone network with a two-wire connection cord 21, and the data terminal equipment 19 is provided with the data transmission switching means which switches the connection to the data transmission line of the data terminal equipment 20 and the connection to an outgoing and incoming call control means mutually of the two-wire connection cord 21, and uses the input/ output device of the facsimile equipment 20 for telephone network as that of the data terminal equipment 19. In such a way, in the data terminal equipment, an outgoing call and an incoming call to the facsimile equipment are controlled when the two-wire connection cord is connected to the outgoing and incoming call control means, and the data transmission line is connected to the facsimile equipment when it is connected the data transmission line side.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a connection system between a data terminal device, a telephone network facsimile i) device, and a telephone line.

(Prior Art) FIG. 2 is a block diagram showing a connection system between a sending side and a receiving side of a conventional telephone network facsimile machine.

In the figure, 1 is a reading section that reads the original Pl, 2 is a data compression section, 3 is a transmission control section, 4 is a modulation/demodulation section, 5 is a line connection section, 6 is a telephone line, and 7 is an exchange, each section 1 to 1. Reference numeral 5 represents the transmitting side of one of the facsimile machines, and A represents the terminal unit for transmission. 8 is a telephone line, 9 is a line connection section, 10 is a modulation/demodulation section, 11 is a transmission control section, 12 is a data restoration section, 13 is a recording section for recording recorded data P2, and each section 9 to 13 is connected to the other This constitutes the receiving side of the facsimile machine, and B is the receiving terminal section.

In the facsimile machine shown in FIG. 2, the data of the document P1 read by the reading unit 1 is processed by the transmitting terminal unit A, such as data compression and modulation, and then sent to the receiving side via the exchange 7. The data is demodulated and data is restored by the reception terminal B, and then stored in the recording unit 13.
The data is recorded as recording data P2.

FIG. 3 is a diagram showing a conventional connection method between a data terminal device having a facsimile connection procedure and a G3 facsimile device for a telephone network.

In the figure, numeral 14 denotes a data terminal device, which has the functions of the transmitting terminal section A and the receiving terminal section B in FIG. 2. The data terminal device 14 is connected to an exchange 16 via a telephone line 15. 17 is G3 for telephone network
A facsimile machine is installed at a position close to the data terminal device 14 and communicates with the exchange 1 via the telephone line 18.
6, and the reading section 1 and recording section 13 shown in FIG. 2 are used as an image data reading section and an image data recording section of the data terminal device 14.

In the connection system shown in FIG. 3, data transmission and reception between the data terminal device 14 and the facsimile device 17 is performed through
5.18 through exchange 16.

(Problems to be Solved by the Invention) However, in the method shown in FIG. There was a problem that the operation of the switching equipment would increase. Also,
There is a problem in that a fee is charged each time a facsimile machine is used as an input/output device of a data terminal device.

SUMMARY OF THE INVENTION An object of the present invention is to provide a terminal connection method for connecting a facsimile device to a data terminal device without using a telephone line.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a facsimile connection means that includes a call origination/reception control means for controlling the origination and reception of calls over a telephone network facsimile device. In a terminal connection method that connects a data terminal device with a telephone network facsimile device and a telephone network facsimile device, a two-wire connection cord is used to connect the data terminal device and the telephone network facsimile device, and the data terminal device is connected to a two-wire connection cord. The device is equipped with a data transmission switching means for mutually switching the connection between the data transmission line of the data terminal device and the connection with the call origination/reception control means, and the input/output device of the facsimile device for the telephone network is connected to the input/output device of the data terminal device. The system was designed to be used as a device.

(Function) According to the present invention, when the two-wire connection cord is connected to the calling/terminating control means by the data transmission switching means, the data terminal device can send and receive calls to the facsimile machine. When the facsimile device is controlled and connected to the data transmission line side, the data transmission line and the facsimile device are connected.

(Embodiment) FIG. 1 shows an embodiment of the present invention, and is a diagram showing a connection system in which a telephone network facsimile device is connected to a data terminal device.

In the figure, reference numeral 19 denotes a data terminal device, and FIG. 4 shows a circuit diagram of the main parts of the data terminal device 19. Reference numeral 20 denotes a G3 facsimile machine for the telephone network, which is similar to the facsimile machine 17 in FIG.
and are installed in close proximity to each other, and serve as input/output devices.
It includes a reading section 1 and a recording section 13 shown in FIG. 2, and the reading section 1 and recording section 13 are used as an image data reading section and an image data recording section of the data terminal device W19. A two-wire connection cord 21 connects the data terminal device 19 and the facsimile device 2o.

In FIG. 4, 22 is a current loop on/off monitoring circuit, 23 is a DC -48V power supply circuit, and 24 is a calling signal sending circuit, and each of the circuits 22, 23 and 24 is used to send and receive calls to the facsimile machine 2o. It serves as a calling/terminating control means for controlling calls. 25 is a protection circuit for overcurrent prevention. Lc is a control signal line for controlling call origination and reception of the data terminal device 19;
Ls is a data transmission line of the data terminal device 19.

Reference numerals 26 and 27 are facsimile device connection lines, which are connected to the two-wire connection cord 21 to which the facsimile device 2o is connected.

2B is a data transmission switching relay serving as a data transmission switching means, and when each relay contact C is on the contact a side, a two-wire connection cord 21 is connected to each circuit 22 for calling and receiving calls.・23,2
4, and when each contact is connected, the data transmission line L
Connect it to s.

Next, the operation of the system shown in FIGS. 1 and 4 will be explained.

FIG. 5 is a flowchart of communication processing between the data terminal device 19 and the facsimile device 20.

In the initial state, the data terminal device 19 sets the data transmission line switching relay 28 to the contact a side (step S1), and supplies power to the facsimile device connection line 26, 27 from the DC -48V power supply circuit 23. ing(
G2).

First, when the facsimile device 20 is activated, that is, when the data terminal device 19 receives a call, the current loop on/off monitoring circuit 22 detects the current loop on (ON) (G3), the data transmission line switching relay. 2
After setting 8 to the contact side (G4), facsimile communication is performed (G5).

Further, when the data terminal device 19 activates the facsimile device 20, that is, when the data terminal device 19 makes a call (SS), the calling signal sending circuit 24 sends out a calling signal (S7), and current loop on/off monitoring is performed. Detect current loop on/off by circuit 22 (G8)
.

If the current loop is off in step S8, the calling signal is stopped (SIO) after a certain period of monitoring time (G9), and a timeout error occurs (S11).
). If the current loop is on in step S8,
After stopping the calling signal (S12), the data transmission line switching relay 28 is set to the contact side (513), and facsimile communication is performed (S14).

(Effects of the Invention) As explained above, according to the present invention, the data terminal device uses the data transmission switching means to switch between calling and receiving calls to the facsimile machine and mutual data transmission. It becomes possible to use a two-wire connection cord between the data terminal devices and the input/output device of the facsimile machine via the two-wire connection cord, and mutual facsimile communication becomes possible.

Since facsimile communication using the input/output device does not go through an exchange, the exchange is not operated and no charges are incurred.

[Brief explanation of drawings]

Fig. 1 is a diagram of a terminal connection system showing an embodiment of the present invention, Fig. 2 is a diagram of a connection scheme between the transmitting side and the receiving side of a conventional telephone network facsimile machine, and Fig. 3 is a diagram of a facsimile machine connected to a data terminal equipment. Terminal connection diagram of conventional facsimile machine,
FIG. 4 is a circuit diagram of a main part of the data terminal device shown in FIG. 1, and FIG. 5 is a flowchart of communication processing by the system shown in FIG. 19...Data terminal device 20...G3 facsimile device for telephone network 21...2
Line connection code (call origination/reception control means) 28... Data transmission switching relay (data transmission switching means)

Claims (1)

[Scope of Claims] Terminal connection for connecting a telephone network facsimile device and a data terminal device having a facsimile connection means including a call origination/reception control means for controlling call origination and incoming calls to a telephone network facsimile device. In this method, a data terminal device and a telephone network facsimile device are connected using a two-wire connection cord, and the data terminal device connects the data transmission line of the data terminal device to the two-wire connection cord, and makes and receives calls. Terminal connection of a facsimile device for a telephone network, characterized in that the input/output device of the facsimile device for the telephone network is used as the input/output device of the data terminal device, and the input/output device of the facsimile device for the telephone network is used as the input/output device of the data terminal device. method.