KR19980051624A - How to switch between faxes in a private exchange system with multiple faxes - Google Patents

Abstract

end. TECHNICAL FIELD OF THE INVENTION The invention described in the claims relates to a method for switching between facsimile calls connected to a private exchange system, and more particularly, to a method for switching a call received at a facsimile generated by a system error to a facsimile in a normal state. .

I. The technical problem to be solved by the present invention is to provide a method for converting a call received by a facsimile, which cannot be faxed, into a facsimile connected to the same private exchange system in a private exchange system connected to a plurality of facsimile machines. .

All. The gist of the solution of the invention: In a facsimile in a private exchange system to which a plurality of facsimiles are connected,

When there is a ring call in the fax reception impossible state, it is possible to receive a fax by switching to a telephone number of a pre-registered auxiliary fax machine among the plurality of fax machines.

la. Important use of the invention: It can be used for facsimile connected to private exchange system.

Description

How to switch between faxes in a private exchange system with multiple faxes

The present invention relates to a facsimile call switching method connected to a private switching system, and more particularly, to a method for switching a call received by a facsimile generated by a system error to a facsimile in a steady state.

1 shows a block diagram of a key phone system for explaining a state where a plurality of facsimile machines are connected to a key phone system. Referring to Figure 1, the central processing unit 10 controls the overall control operation of the key phone system 100 and the ring subscriber to the designated subscribers when there is an incoming call from the trunk line. The memory unit 12 connected to the CPU 10 stores a control program of the CPU 10 and temporarily stores data generated during program execution. The extension subscriber circuit 14 is connected to a plurality of extension terminals (receive-only facsimile machines and general telephones) to supply talk current in a voice band and to perform interfacing between subscribers. The switching circuit 16 switches various tone signals and voice data under the control of the CPU 10. The tone supply circuit 18 generates various tone signals under the control of the central processing unit 10 and outputs them to the switching circuit 16. The ring generating circuit 20 generates ring signals for supplying to subscriber lines. To print. The trunk line circuit 22 forms a trunk line loop under the control of the central processing unit 10 to form a trunk line loop, and interfaces signals that are incoming from the trunk line. The DTMF receiver 26 analyzes the DTMF signal output through the extension subscriber circuit 14 and applies the corresponding digit data to the central processing unit 10. The DTMF transmitter 24 outputs a DTMF signal under the control of the central processing unit 10.

The reception-only facsimile connected to the key phone system 100 having the above-described configuration operates in the normal telephone mode without switching to the reception state even if the facsimile is set in the reception mode when the environment for receiving a fax is not satisfied. In this case, the environment for receiving a fax refers to an environment in which a normal fax reception operation cannot be performed because an over heat state, a paper jam, or the like occurs when there is no recording paper. Therefore, when a specific person performs a fax transmission in a state in which the reception-only fax machine does not normally receive a fax, a problem occurs in that the received fax content cannot be received.

Accordingly, it is an object of the present invention to provide a method for switching a call received by a facsimile, which cannot be faxed, into a facsimile connected to the same private exchange system in a private exchange system in which a plurality of facsimile systems are connected.

The present invention for achieving the above object is a facsimile in a private exchange system in which a plurality of facsimile is connected,

When there is a ring call in the fax reception impossible state, it is possible to receive a fax by switching to a telephone number of a pre-registered auxiliary fax machine among the plurality of fax machines.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram of a key phone system for explaining a state where a plurality of facsimiles are connected to a key phone system.

2 is a general block diagram of the facsimile of FIG.

Figure 3 is a flow chart of the facsimile control unit 30 for explaining the call switching process according to an embodiment of the present invention.

Hereinafter, an operation according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 shows a block diagram of a typical facsimile. Referring to FIG. 2, the controller 30 controls the overall operation of the facsimile based on a control program stored in the ROM 36. Under the control of the controller 30, a LIU 32 connects a keyphone line to a modem, detects an incoming ring, and provides the incoming ring to the controller 30. The modem 34 demodulates and outputs a modulated signal input through the LIU 32 under the control of the controller 30, and modulates and outputs a signal to be sent to a telephone line through the LIU 32. The ROM 36 stores a control program executed by the controller 30, and the RAM 38 stores received or read image data or temporarily stores data generated when a function is performed in the fax. In addition, the RAM 38 stores various system error information according to an embodiment of the present invention and simultaneously stores the telephone number of the auxiliary fax machine. The scanner 40 reads image data from an original and provides it to the controller 30 as digital image data. The printer 42 prints the reception data and the transmission result according to the control signal of the CPU 30. The image processor 44 reduces the image data read by the scanner 40 and digitally converts the image data to store in the internal memory. The OPE (Operating Panel Equipment) 46 has a plurality of keys that can generate key data. When the key data is generated, the OPE 46 is inputted to the control unit 30, and the processing result according to various operations of the control unit 30, etc. It is provided with a display device capable of displaying. The sensor 48 checks various states of the facsimile and notifies the control unit 30.

3 is a flowchart illustrating a call switching process according to an embodiment of the present invention. Hereinafter, referring to FIGS. 2 and 3, a process of switching a received call to a facsimile connected to the same private exchange system will be described.

First, the controller 30 checks whether an error of the facsimile system occurs in step 50 of FIG. 3. At this time, as a cause of the system error, for example, there is no recording paper, overheat, paper jam and the like. If a system error occurs in step 50, the controller 30 proceeds to step 52 and stores the system error information on the RAM 38, and then proceeds to step 54. Thereafter, in step 54, the controller 30 checks whether there is a ring incoming, and if there is a ring incoming, the controller 30 proceeds to step 56 to check whether there is error information stored on the RAM 38. If error information is not stored on the RAM 38 as a result of the test, the controller 30 recognizes that it can normally receive a fax and switches to the fax receiving mode. However, if error information is stored in step 56, the controller 30 recognizes that fax reception is impossible and proceeds to step 58. Thereafter, the controller 30 attempts to switch the call to the phone number of the auxiliary facsimile registered on the RAM 38 in step 58. In this case, the call switching method is a known fact. Briefly, the control unit 30 opens and closes the CML relay on the LIU 32 for a predetermined time (there is a time difference for each country), and then registers a previously registered subsidiary. After dialing the fax's telephone number sequentially, the CML relay is opened again to return to the telephone standby mode. As a result, the auxiliary fax machine connected to the same private switching system can receive a predetermined fax after ring reception.

As described above, the present invention provides an advantage that the fax reception probability can be doubled by automatically switching the call to a subfacsimile when the facsimile which is in the facsimile receiving state is not available in the private exchange system to which the facsimile is connected. There is this.

Claims (2)

In a fax in a private exchange system to which a plurality of faxes are connected, A fax inter-facility call switching method characterized in that, when there is a ring call in a state where fax reception is impossible, a fax can be received by switching to a telephone number of a pre-registered auxiliary fax machine among the plurality of fax machines. In the facsimile connected to the key phone system, The process of checking for incoming ring when there is no fax reception possible; The method for switching between faxes, characterized in that the process of switching the call to the telephone number of the pre-registered secondary facsimile when there is a ring in the state that the fax reception is impossible.