JP6969398B2 - Facsimile equipment - Google Patents

Description

The present invention relates to a facsimile machine having a facsimile communication function and a call function.

A conventional facsimile machine has a facsimile communication function and a call function, stores a connection state of a telephone line detected in advance in a storage unit, and when performing facsimile reception processing, the storage unit when a ringing signal is detected. Read the connection status from, and if the read connection status is reverse connection, wait for a predetermined time after capturing the line, have the telephone exchange detect the loop closure, disconnect the connection circuit to the telephone, and then reconnect. After that, the line is released to end the reception process (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2017-288580 (paragraph 0058-0060, paragraph 0067, FIG. 8)

However, in the above-mentioned conventional technique, when the telephone line is reversely connected, there is a problem that the state in which facsimile communication with the other party cannot be performed continues until the reverse connection state is resolved.
The present invention has been made to solve the above problems, and an object of the present invention is to provide a means for smoothly eliminating a reverse connection state in a facsimile machine.

In the present invention, in order to solve the above problems, the facsimile device has a telephone line connection terminal for connecting to a telephone line from a telephone exchange, a telephone connection terminal for connecting to a telephone line from a telephone, and the telephone connection terminal and a modem. A switch provided in the connection circuit with the telephone line is provided, and the connection state of the telephone line is determined based on the line voltage of the telephone line when the switch is disconnected, and the result of the determination is reverse connection. In the case of, after the telephone line is captured by the modem, the captured telephone line is released by the modem after the specified standby time elapses, and the switch is turned off after the specified standby time elapses. It is characterized by notifying the fact of reverse connection as it is.

As a result, the present invention has the effect that the reverse connection state in the facsimile machine can be smoothly eliminated and the facsimile communication with the other party can be enabled.

Explanatory drawing which shows the communication system of Example 1. Explanatory drawing which shows the facsimile apparatus of Example 1. A flowchart showing a connection process of the caller telephone number notification service of the facsimile machine of the first embodiment. Explanatory drawing which shows the reverse connection state of the telephone line in the facsimile apparatus of Example 1. A flowchart showing a reception process of the facsimile machine of the first embodiment. Explanatory drawing which shows the communication part in the reverse connection state of the telephone line of Example 2. A flowchart showing a reception process of the facsimile machine of the second embodiment.

Hereinafter, examples of the facsimile machine according to the present invention will be described with reference to the drawings.

Hereinafter, the facsimile machine of this embodiment will be described with reference to FIGS. 1 to 5.

In the communication system of this embodiment, as shown in FIG. 1, the facsimile device 1 and the other party's machine 2 which is the other party's facsimile device are connected to each other via a telephone network 3 such as a public telephone network or a local telephone network. The facsimile apparatus 1 is connected to the telephone exchange 6a provided in the telephone network 3 via the telephone line 5a, and the other party 2 is the telephone exchange 6b provided in the telephone network 3 via the telephone line 5b. Connected to.

The telephone lines 5a and 5b are transmission lines that physically connect the telephone exchange 6a and the facsimile machine 1, and the telephone exchange 6b and the other party 2, respectively.
The facsimile machine 1 of the present embodiment is a device having a telephone communication function with the other party by the telephone 8 and a facsimile communication function for sending and receiving image data of a document to and from the other party, and is shown in FIG. It has a configuration.

The telephone 8 is connected to the facsimile machine 1 via the telephone line 8a and is used when making a call with the telephone of the other party connected to the telephone network 3.
The telephone number of the telephone 8 of this embodiment and the telephone number for facsimile communication are the same.

The control unit 11 of the facsimile machine 1 includes a CPU and the like, and controls each unit in the facsimile machine 1 via a bus 12 to execute facsimile communication processing such as facsimile reception processing and transmission processing.

The storage unit 13 includes a ROM, a RAM, a hard disk, and the like, and stores a communication processing program executed by the control unit 11, as well as a processing result at the time of program execution by the control unit 11, image data of a document, and the like. ..
The display unit 14 includes a display screen such as an LCD, and displays various information such as a device status to be notified to the user on the display screen.

The operation unit 15 includes input means including a start key, a cursor key, a numeric keypad, and the like, and receives input from the user by the input means.
The scanning unit 16 includes a scanner or the like, optically reads the original image of the original printed on the printing paper as a medium, and converts the scanned original image into image data.

The printing unit 17 is provided with a printer of a heat-sensitive recording method, an electrophotographic method, or the like, and is a document received from another facsimile machine such as the other machine 2 (when the other facsimile machine is included, it is referred to as the other machine 2 or the like). Print the image data of the above on paper and eject it.
The communication unit 18 includes a modem 19, a switch 20, and the like, and performs modulation, demodulation, transmission, and the like of image data, procedure signals, and the like during facsimile communication with a remote unit 2 and the like connected to the telephone network 3.

The facsimile communication control unit 21 provided in the control unit 11 of this embodiment controls the modem 19 and the switch 20 of the communication unit 18 with the other party 2 and the like connected to the telephone network 3 and the ITU-T (International). Recommendation T.T. It is a functional means formed by a program having a function of performing facsimile communication based on the transmission control procedure of 30 and a control unit 11.

The display control unit 22 is a functional means formed by a program having a function of controlling the display unit 14 and displaying information such as the device status of the facsimile device 1 to be notified to the user, and the control unit 11.
The job control unit 23 is a functional means formed by a program having a function of performing facsimile communication job management by the communication unit 18, job management of printing processing by the printing unit 17, and the control unit 11.

The image processing control unit 24 is a program and control unit 11 having a function of encoding the image data output from the reading unit 16 and decoding the image data received from the other party 2 or the like connected to the telephone network 3. It is a functional means formed by.
The print control unit 25 is a functional means formed by a program having a function of controlling the print unit 17 and printing image data received from a remote unit 2 or the like connected to the telephone network 3 and a control unit 11.

The reading control unit 26 is a functional means formed by a program and a control unit 11 having a function of controlling the reading unit 16 to read and convert a single or a plurality of original images and storing the converted image data in the storage unit 13. be.
The data control unit 27 is a program having a function of reading and writing image data received from the other party 2 and the like connected to the telephone network 3 and image data output from the reading unit 16 to the storage unit 13. It is a functional means formed by the control unit 11.

In addition to the modem 19 and the switch 20, the communication unit 18 of the present embodiment described above includes a bus connection terminal 31, a telephone line connection terminal 32, a telephone connection terminal 33, and the like.
The modem 19 is connected to the bus connection terminal 31 and the telephone line connection terminal 32 via a connection circuit, respectively, and is connected to the telephone connection terminal 33 via the switch 20 by a connection circuit branched from the connection circuit to the telephone line connection terminal 32. Will be done.

The switch 20 is a switch of an electric circuit controlled by a facsimile communication control unit 21, and is a telephone line connection terminal 32 and a telephone when the switch 20 is closed and operated as shown by the solid line in FIG. It is electrically connected to the connection terminal 33.
As a result, the telephone 8 and the modem 19 are connected in parallel to the telephone line 5a.

Further, the switch 20 disconnects between the telephone line connection terminal 32 and the telephone connection terminal 33 when the switch 20 is opened and operated as shown by the two-dot chain line shown in FIG.
As a result, when the modem 19 captures the telephone line 5a, the telephone line connection terminal 32 and the telephone connection terminal 33 can be disconnected, and the influence from the telephone 8 during the facsimile communication by the modem 19 can be reduced. Can be done.

The switch 20 is always in the ON state in order to enable connection between both the telephone line connection terminal 32 and the telephone connection terminal 33 and the modem 19.
The bus connection terminal 31 is a connection terminal for transmitting and receiving data between the modem 19 and the control unit 11 and the like via the bus 12.

The telephone line connection terminal 32 is a connector generally called a module jack, and when the telephone line 5a is connected to the modem 19, a connector provided at the end of the telephone line 5a is attached.

The telephone connection terminal 33 is a connector similar to the telephone line connection terminal 32, and when the telephone 8 is connected to the facsimile machine 1, a connector provided at the end of the telephone line 8a connected to the telephone 8 is attached. Will be done.
Below, using the flowchart shown in FIG. 3, the caller telephone number notification service (for example, number display (registered trademark of Nippon Telegraph and Telephone East Corporation)) as a telephone network utilization service by the facsimile machine 1 of this embodiment. The processing operation of the connection processing will be described.

When the user turns on the power of the facsimile machine 1, the communication processing program stored in the storage unit 13 is automatically started.

S1: The control unit 11 waits for the detection of the receiving terminal activation signal (CAR signal) transmitted from the telephone exchange 6a of the telephone network 3 by the facsimile communication control unit 21, and waits by the modem 19 of the communication unit 18. When the receiving terminal activation signal is detected, the start of the receiving process is recognized and the process proceeds to step S2. If the receiving terminal activation signal is not detected, the above-mentioned standby is continued.

S2: The control unit 11 that recognizes the start of the reception process turns off the switch 20 of the communication unit 18 by the facsimile communication control unit 21 and disconnects the connection circuit to the telephone connection terminal 33.

S3: The control unit 11 that disconnects the connection circuit to the telephone connection terminal 33 gives a line acquisition instruction to the modem 19 by the facsimile communication control unit 21, and the modem 19 acquires the telephone line 5a as a primary response.

The line acquisition by the facsimile apparatus 1 is transmitted to the telephone exchange 6a via the telephone line connection terminal 32 and the telephone line 5a, and the telephone exchange 6a detects the closing of the loop.
The telephone exchange 6a that has detected the closing of the loop sends out the information or the like within the information or the like sending time (0.1 to 3 seconds) from the time when the closing of the loop is detected.

S4: When the control unit 11 that has captured the line as a primary response waits for the reception of information or the like (such as the telephone number of the sender) transmitted from the telephone exchange 6a and waits for the reception of the information or the like by the modem 19. The process proceeds to step S5. If the information or the like is not received, the above-mentioned standby is continued.

S5: The control unit 11 that has received the information or the like from the telephone exchange 6a gives an instruction to release the line to the modem 19 by the facsimile communication control unit 21, and the modem 19 releases the telephone line 5a captured as the primary response.

Upon detecting the line release by the facsimile machine 1, the telephone exchange 6a recognizes that the reception of information and the like by the facsimile machine 1 is completed.
In this case, the telephone exchange 6a waits for the elapse of the line release waiting time of 7 seconds after sending information and waits, and when the line release is detected within the line release waiting time, the telephone exchange 6a calls the facsimile apparatus 1. Send a signal (IR signal).

If the telephone exchange 6a does not detect the line release within the line release waiting time, the telephone exchange interrupts the connection operation of the caller's telephone number notification service, and the caller and the callee are busy (caller is busy, etc.). (Signal sound emitted in the case of) is sent to terminate the caller telephone number notification service this time.

S6: The control unit 11 that has released the line captured as the primary response waits for the detection of the call signal transmitted from the telephone exchange 6a after the line is released, and waits for the detection of the call signal, and when the modem 19 detects the call signal, step S7. Move to. If the ringing signal is not detected, the above-mentioned standby is continued.

S7: The control unit 11 that has detected the call signal gives a line acquisition instruction to the modem 19 by the facsimile communication control unit 21, and the modem 19 acquires the telephone line 5a as a secondary response.

S8: The control unit 11 that has captured the line as a secondary response subsequently receives the image data or the like transmitted from the other party 2 and executes the printing process or the like described later.

The control unit 11 that has finished executing the printing process or the like ends the current reception process, returns to step S1, and continues waiting in the detection waiting state of the receiving terminal activation signal.
In this way, the connection process of the caller telephone number notification service by the facsimile machine 1 of this embodiment is performed.

Hereinafter, the processing operation of the facsimile reception processing by the facsimile apparatus 1 of this embodiment will be described with reference to the flowcharts shown in FIGS. 4 and 5.

In the storage unit 13 of this embodiment, a line voltage threshold value, which is a predetermined threshold value of the line voltage for determining whether or not the telephone line 5a is correctly connected to the telephone line connection terminal 32, is preset and stored. ing.

This line voltage threshold value is set to be larger than 0 V and lower than the specified line voltage when the facsimile apparatus 1 is connected to the telephone line 5a.
Further, in the storage unit 13, a predetermined waiting time for the facsimile communication control unit 21 to wait for the connection operation of the caller telephone number notification service by the telephone exchange 6a to be interrupted is set and stored in advance.

This specified standby time is the information transmission time after the telephone exchange 6a detects the closure of the loop by the primary response from the facsimile machine 1 (step S3 in FIG. 3) in the connection processing of the caller telephone number notification service (step S3 in FIG. 3). The maximum time of the sum of (0.1 to 3 seconds) and the line release waiting time (7 seconds) in which the telephone exchange 6a waits for the line release by the facsimile machine 1 (step S5 in FIG. 3) after sending information or the like, that is, The telephone exchange 6a is set to the maximum required time (10 seconds in this embodiment) from the time when the telephone exchange 6a detects the line acquisition by the facsimile machine 1 to the time when the line is detected to be open.

Further, the storage unit 13 displays a reverse connection on the display screen of the display unit 14, and a predetermined time (1 minute in this embodiment), which is a time interval for reconfirming the connection state of the telephone line 5a. Is preset and stored.

In the following description, the connection state to the facsimile device 1 is a case where the telephone line 8a is connected to the telephone line connection terminal 32 and the telephone line 5a is connected to the telephone connection terminal 33, as shown in FIG. It is called reverse connection, and as shown in FIG. 2, the case where the telephone line 5a is correctly connected to the telephone line connection terminal 32 and the telephone line 8a is correctly connected to the telephone connection terminal 33 is called a normal connection.

Since the processing operations of steps SA1 and SA2 in this reception processing are the same as the processing operations of steps S1 and S2 of the connection processing of the caller telephone number notification service described with reference to FIG. 3, the description thereof will be omitted.

SA3: The control unit 11 that disconnects the connection circuit to the telephone connection terminal 33 reads the line voltage threshold from the storage unit 13 by the facsimile communication control unit 21, and the line voltage of the telephone line 5a from the modem 19 of the communication unit 18. If the acquired line voltage is equal to or higher than the line voltage threshold value, it is determined that the connection is normal, and the process proceeds to step SA4.

If the acquired line voltage is less than the line voltage threshold value, it is determined that the connection is reverse and the process proceeds to step SA13.

SA4: The control unit 11 that determines that the telephone line 5a is normally connected gives a line acquisition instruction to the modem 19 by the facsimile communication control unit 21, and the modem 19 acquires the telephone line 5a as a primary response.

The line acquisition by the facsimile apparatus 1 is transmitted to the telephone exchange 6a via the telephone line connection terminal 32 and the telephone line 5a, and the telephone exchange 6a detects the closing of the loop.

Subsequent processing operations of steps SA5 to SA8 are the same as the processing operations of steps S4 to S7 in FIG. 3, and thus the description thereof will be omitted.

SA9: The control unit 11 that has captured the line as a secondary response receives a recommendation T.I. The image data transmitted according to 30 is received, and the received image data is stored in the storage unit 13 by the data control unit 27.

SA10: The control unit 11 that has received the image data from the other party 2 issues a line release instruction to the modem 19 by the facsimile communication control unit 21, and the modem 19 releases the line captured as a secondary response.

SA11: The control unit 11 that has released the line captured as a secondary response turns on the switch 20 by the facsimile communication control unit 21 to connect the telephone line connection terminal 32 and the telephone connection terminal 33.

SA12: The control unit 11 connecting the telephone line connection terminal 32 and the telephone connection terminal 33 decodes the image data saved in the storage unit 13 in step SA9 by the image processing control unit 24, and sends the image data to the print control unit 25. do. The print control unit 25 prints the received image data on paper by the print unit 17 and ejects it.

The control unit 11 that has finished executing the printing process or the like ends the current reception process, returns to step SA1, and continues waiting in the detection waiting state of the receiving terminal activation signal.

In this way, the facsimile reception process is performed in the case of a normal connection.

SA13: On the other hand, the control unit 11 that determines in step SA3 that the telephone line 5a is reversely connected turns on the switch 20 of the communication unit 18 by the facsimile communication control unit 21 to connect the telephone connection terminal 33 and the modem 19. To connect.

SA14: The control unit 11 connecting the telephone connection terminal 33 and the modem 19 captures the telephone line 5a as a primary response by the modem 19 of the communication unit 18.

The line acquisition by the facsimile apparatus 1 is transmitted to the telephone exchange 6a via the switch 20 in the ON state, the telephone connection terminal 33, and the telephone line 5a, and the telephone exchange 6a detects the closing of the loop and transmits information and the like (information transmission time). After the elapse of 0.1 to 3 seconds), wait for the elapse of the line release waiting time (7 seconds) and wait.

SA15: The control unit 11 that has captured the line as a primary response reads the specified standby time (10 seconds in this embodiment) from the storage unit 13, waits for the elapse of the specified standby time, and waits for the elapse of the specified standby time. When the elapsed time exceeds the specified waiting time, the process proceeds to step SA16. If the elapsed time is within the specified waiting time, the above-mentioned waiting is continued.

SA16: The control unit 11 recognizing the elapse of the specified standby time gives a line release instruction to the modem 19 by the facsimile communication control unit 21, and the modem 19 releases the telephone line 5a captured as the primary response.

At this time, since the line release waiting time in the telephone exchange 6a has already passed, the telephone exchange 6a interrupts the connection operation of the caller telephone number notification service, and the busy sound to both the facsimile machine 1 and the other party 2 is heard. Is sent to terminate the caller's phone number notification service this time.

SA17: The control unit 11 that released the line captured as the primary response turns off the switch 20, disconnects the connection circuit to the telephone connection terminal 33 to which the telephone line 5a is connected, and transmits the connection circuit from the storage unit 13 for a predetermined time. (In this embodiment, 1 minute) is read and the process proceeds to step SA18.

SA18: The control unit 11 that has disconnected the connection circuit to the telephone connection terminal 33 is in a reverse connection state in which the telephone line 5a is connected to the telephone connection terminal 33 on the display screen of the display unit 14 by the display control unit 22. A reverse connection notification screen displaying the wording of the above is displayed to notify the user that the connection is reverse.

SA19: The control unit 11 waits for the lapse of a predetermined time and waits, and when the elapsed time exceeds the predetermined time, the process proceeds to step SA20. If the elapsed time is within the predetermined time, the above-mentioned waiting is continued.

SA20: The control unit 11 that recognizes the passage of a predetermined time determines the connection state of the telephone line 5a in the same manner as in step SA3, and if the connection state remains the reverse connection, the display screen of the display unit 14 is displayed. While displaying the reverse connection notification screen, it waits for the user to change the connection between the telephone line 5a and the telephone line 8a.

When the connection state is normal, it is determined that the telephone line 5a and the telephone line 8a are correctly connected to the telephone line connection terminal 32 and the telephone connection terminal 33, respectively, due to the connection change by the user, and the process proceeds to step SA21.

SA21: The control unit 11 that determines that the connection state has become a normal connection erases the reverse connection notification screen displayed on the display unit 14, and turns on the switch 20 of the communication unit 18 by the facsimile communication control unit 21 to turn on the telephone 8 Connects the circuit between the telephone connection terminal 33 and the telephone line connection terminal 32 to which is connected, ends the current reception process, returns to step SA1, and continues waiting in the detection waiting state of the reception terminal activation signal. do.

In this way, the facsimile reception process is performed in the case of reverse connection.

As described above, in the present embodiment, after the receiving terminal activation signal is detected, the telephone connection terminal 32 is disconnected from the modem 19 to determine the connection state of the telephone line 5a, and in the case of reverse connection, it is specified after the line is captured. Since the user waits for the standby time and then notifies that the reverse connection is established until the reverse connection is resolved while the telephone connection terminal 33 and the modem 19 are disconnected, the user can reverse the connection state of the telephone line 5a. It is possible to easily know that the connection is made, and it is possible to smoothly eliminate the reverse connection state in the facsimile apparatus 1 and enable facsimile communication with the other party.

Further, since the specified standby time is set longer than the maximum required time (10 seconds in this embodiment) from the time when the connected telephone exchange 6a detects the line acquisition to the time when the line is detected to be open, the caller is called. It is possible to interrupt the connection process of the telephone number notification service and suppress the arrival of the ringing signal after sending information or the like.

In this embodiment, the notification to the user that the connection is reverse is performed by displaying the reverse connection notification screen, but the printing unit 17 prints the fact that the connection is reverse on paper and uses it. You may notify the person.

Hereinafter, the facsimile machine of this embodiment will be described with reference to FIGS. 6 and 7. The same parts as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 6, the communication unit 18 of the facsimile machine 1 of the present embodiment is provided with a line-side switch 41 as a first switch in the connection circuit between the modem 19 and the telephone line connection terminal 32, and is a modem. A telephone-side switch 42 as a second switch is provided in the connection circuit between 19 and the telephone connection terminal 33.
Note that FIG. 6 shows a reverse connection state of the telephone line 5a.

The configuration of the line-side switch 41 and the telephone-side switch 42 is the same as the configuration of the switch 20 of the first embodiment, and the line-side switch 41 and the telephone-side switch 42 are the telephone line connection terminal 32 and the telephone connection terminal 33. In order to enable connection between both of them and the modem 19, they are always in the ON state.
As a result, the telephone 8 and the modem 19 are connected in parallel to the telephone line 5a.

Hereinafter, the processing operation of the facsimile reception processing by the facsimile apparatus 1 of this embodiment will be described with reference to the flowchart shown in FIG.

In the storage unit 13 of this embodiment, the line voltage threshold value similar to that of the first embodiment is preset and stored.
In this embodiment, the storage of the specified standby time and the predetermined time described in the first embodiment in the storage unit 13 is omitted.

SB1: The control unit 11 waits for the detection of the receiving terminal activation signal (CAR signal) transmitted from the telephone exchange 6a and waits in the same manner as in step S1 (FIG. 3) of the first embodiment, and the modem 19 When the reception terminal activation signal is detected, the start of the reception process is recognized and the process proceeds to step SB2. If the receiving terminal activation signal is not detected, the above-mentioned standby is continued.

SB2: The control unit 11 that recognizes the start of the reception process turns off the telephone side switch 42 of the communication unit 18 by the facsimile communication control unit 21 and disconnects the connection circuit to the telephone connection terminal 33.

SB3: The control unit 11 that disconnects the connection circuit to the telephone connection terminal 33 acquires the line voltage of the telephone line 5a from the modem 19 of the communication unit 18 in the same manner as in step SA3 (FIG. 5) of the first embodiment. If the acquired line voltage is equal to or higher than the line voltage threshold value, it is determined that the connection is normal, and the process proceeds to step SB4.

If the acquired line voltage is less than the line voltage threshold value, it is determined that the connection is reverse and the process proceeds to step SB12.

Subsequent processing operations of steps SB5 to SB10 are the same as the processing operations of steps SA4 to SA10 of the first embodiment, and thus the description thereof will be omitted.

SB11: The control unit 11 that has released the line captured as a secondary response turns on the telephone side switch 42 by the facsimile communication control unit 21 to connect the telephone line connection terminal 32 and the telephone connection terminal 33, and proceeds to step SB22. ..

SB12: On the other hand, the control unit 11 that determines in step SB3 that the telephone line 5a is reversely connected turns on the telephone side switch 42 of the communication unit 18 by the facsimile communication control unit 21 to turn on the telephone connection terminal 33 and the modem. Connect with 19.

SB13: The control unit 11 connecting the telephone connection terminal 33 and the modem 19 turns off the line side switch 41 of the communication unit 18 by the facsimile communication control unit 21 to disconnect the connection circuit to the telephone line connection terminal 32.

As a result, the telephone line 5a is connected to the modem 19 via the telephone connection terminal 33 and the telephone side switch 42 in the ON state.

SB14: The control unit 11 connecting the telephone line 5a and the modem 19 by turning on the telephone side switch 42 gives a line acquisition instruction to the modem 19 by the facsimile communication control unit 21, and the modem 19 receives the telephone line 5a as a primary response. To capture.

Subsequent processing operations of steps SB15 to SB20 are the same as the processing operations of steps SB5 to SB10, and thus the description thereof will be omitted.

SB21: The control unit 11 that has released the line captured as a secondary response turns on the line side switch 41 by the facsimile communication control unit 21 to connect the telephone line connection terminal 32 and the telephone connection terminal 33, and proceeds to step SB22. ..

SB22: The control unit 11 migrated from the step SB11 or the SB21 prints the image data saved in the storage unit 13 in the storage unit 13 in the step SB9 or SB19 on the paper in the same manner as in the step SA12 of the first embodiment. Discharge.

The control unit 11 that has finished executing the printing process or the like ends the current reception process, returns to step SB1, and continues waiting in the detection waiting state of the receiving terminal activation signal.

In this way, facsimile reception processing is performed in the case of normal connection and reverse connection.

As described above, in the present embodiment, in the communication unit 18 of the facsimile machine 1, the telephone line side switch 41 and the telephone side connection terminal are connected to the connection circuit between the modem 19 and the telephone line connection terminal 32 and the telephone line connection terminal 33, respectively. Since the 42 is provided, even if the telephone line 5a and the telephone line 8a are reversely connected, when it is determined that the telephone line is reversely connected, the telephone line connection terminal 32 is disconnected from the modem 19 and the telephone connection terminal 33 is connected. It becomes possible to connect the telephone line 5a and the modem 19 via the telephone line, and even if the reverse connection state is not canceled, the reverse connection state in the facsimile apparatus 1 is automatically canceled and the facsimile to and from the other party is eliminated. Communication can be enabled.

In each of the above embodiments, the case where the present invention is applied to the facsimile apparatus 1 having the facsimile communication function and the call function has been described, but two devices are arranged in parallel with respect to the telephone line 5a from the telephone network 3. The same effect can be obtained by applying the present invention to any device that can be connected.

1 Facsimile device 2 Remote unit 3 Telephone network 5a, 5b Telephone line 6a, 6b Telephone exchange 8 Telephone 8a Telephone line 11 Control unit 12 Bus 13 Storage unit 14 Display unit 15 Operation unit 16 Reading unit 17 Printing unit 18 Communication unit 19 modem 20 Switch 21 Facsimile communication control unit 22 Display control unit 23 Job control unit 24 Image processing control unit 25 Print control unit 26 Read control unit 27 Data control unit 31 Bus connection terminal 32 Telephone line connection terminal 33 Telephone connection terminal 41 Line side switch 42 Telephone Side switch

Claims (2)

A telephone line connection terminal that connects to a telephone line from a telephone exchange,
The telephone connection terminal that connects to the telephone line from the telephone,
A switch provided in the connection circuit between the telephone connection terminal and the modem is provided.
Based on the line voltage of the telephone line when the switch is turned off, the connection state of the telephone line is determined.
If the result of the determination is reverse connection, it is after the acquisition of the telephone line by the modem.
A facsimile machine characterized in that, after the lapse of the specified standby time, the captured telephone line is released by the modem, and after the lapse of the specified standby time, the reverse connection is notified with the switch disconnected. In the facsimile machine according to claim 1,
A facsimile machine characterized in that the specified standby time is set to a time longer than the maximum required time from the time when the telephone exchange detects the capture of the telephone line to the detection of the opening of the telephone line.

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