KR940000935B1 - Automatic alternative method for fax - Google Patents

Abstract

The method for automatically switching a facsimile call includes the steps of: checking whether a first facsimile is able to receive a call or not; checking whether a second facsimile's dial number is stored or not if the first facsimile is unable to receive the call; and dialing with the second facsimile if the dial number is stored, thereby enhancing the function of the system.

Description

How to automatically switch fax calls

1 is a connection diagram of a fax system according to the present invention.

2 is a block diagram of a fax system according to the present invention.

3 is a flow chart according to the present invention.

* Explanation of symbols for main parts of the drawings

10: central processing unit 20: memory unit

30: OPE 40: scanner

50: modem 60: NCU

70: printer

The present invention relates to a fax call automatic switching method in a facsimile system, and more particularly, to a fax call automatic switching or method for automatically switching a call to another fax when one fax cannot be received when two faxes are installed. will be.

In general, when a fax system dialed from a sending fax machine and called the other fax machine, the receiving fax machine could not receive a fax while ringing only when the recording paper ran out or a jam occurred. Therefore, when two faxes are installed on the receiving side, an error occurs in one of the faxes, or there is a problem that the receiving of the faxes cannot be received unless the dialing fax is dialed again from the sending fax.

Accordingly, an object of the present invention is to provide an automatic fax call switching method capable of receiving a fax by automatically switching a call to another fax when one or more faxes are installed in an unreceivable state.

Another object of the present invention is to provide a fax caller switching method that enables fax reception by automatically dialing to another fax when one or more faxes are received from a sender in a fax machine installed with two or more.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 1 is a connection diagram of another fax system according to the present invention, and the first fax 200 and the second fax 200 are connected to the private exchange 100. 2 is a block diagram of the first to second faxes 200 and 300 of FIG. 1, wherein the central processing unit 10 controls and processes the system according to a predetermined program, and program data stores protocol data and text data. And a memory unit 20 for accessing or storing data under the control of the central processing unit 10, and a plurality of keys for generating key data of the system, when the key data is generated. 10) an OPE (Operating pannel) 30 having a display device capable of inputting to and displaying the display data of the central processing unit 10, and scanning the image of the original to the digital processing device as digital image data. 10) under the control of the scanner 40 and the central processing unit 10, and outputs the analog data to the output of the central processing unit 10 and demodulates and outputs the analog and receive inputs. The modem 50 and the control unit 10 operate under the control of the central processing unit 10 to form a call loop of a telephone line, and the signal of the modem 50 and the telephone line Tel-. A network control unit (NCU) 61 for interfacing a signal of a line, a printer 70 for printing received data according to a control signal of the central processing unit 10, and a remaining amount of recording paper for sensing the central processing unit. Sensor unit 80 provided to the device 10 and the speaker 90 for generating an alarm by the control signal of the central processing unit 10.

3 is a flowchart according to the present invention, in which a first process of checking whether a first fax is received when a call is received by a fax and a dial number of a second fax is stored if it is impossible to receive in the first process. And a third process of switching a call and cutting off a line by dialing the second fax if a dial number is stored in the second process.

One embodiment of the present invention based on the above-described configuration will be described in detail with reference to FIGS.

When two fax machines are installed and used as shown in FIG. 1 at one place, when the sender dials to send a fax, the first fax 200 is called through the private exchange 100. In this case, when the jam occurs in the first fax 200 or the recording paper is not able to receive the fax, the phone number of the second fax 300 is stored in the first fax 200. The number is automatically dialed so that the first fax 200 can automatically dial the number so that the second fax 300 can receive the document.

Referring to the method of switching a fax call as described above in the flowchart of FIG. 3, in step (3a), if the dialing is performed to send a fax from the sender, whether the ring tone of the central processing unit 10 of the first fax 200 sounds. The test returns if the ring tone does not sound, and performs the step (3b) if the ring tone sounds. In step (3b), the central processing unit 10 of the first fax 200 checks whether the fax can be received and returns if fax reception is possible, and performs step 3c if fax reception is not possible. In step (3c), the central processing unit 10 of the second fax 300 checks whether the dial number of the substitute fax for call transfer is stored in the memory unit 20, and if it is not stored, returns and stores it. Perform step (3d). In step (3d), the central processing unit 10 of the first fax 200 reads the dial number stored in the memory unit 20 and dials the second fax 300. 200 transmits a CNG tone (calling tone) to switch the call to the second fax 300 when receiving the CED tone from the second fax (300). In step 3e, the second fax 300 is connected to the fax call and the line is disconnected.

When two faxes are installed and used as described above, when one fax is in an unreceivable state, the fax number is automatically switched by dialing from an unreceivable fax to another fax. This can be done by fax, which has the advantage of improving the functionality of the system.

Claims (2)

A fax call automatic switching method comprising: receiving a fax by switching a fax call to the second fax when the first fax is incapable of receiving when the first fax is in an unreceivable state. A first step of checking whether the first fax can be received; a second step of checking whether the dial number of the second fax is stored when the reception is impossible in the first step; and if the dial number is stored in the second step, And dialing the second fax to switch the call and disconnect the line. The method of claim 1, wherein the third process comprises: reading and dialing the dial number of the second fax, and dialing the second fax and then cutting the fax number and cutting off the line. Way.