JP2009038614A - Telephone apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a telephone apparatus which can perform continuation or stop of speech with a partner at an early stage without requiring complicated work. <P>SOLUTION: An MFP 1 disconnects a line as it is, if operation of a hooking key 15a adds 1 to a hooking counter 13a at every time that the telephone apparatus of a speech destination is switched, and a value of the hooking counter 13a is zero when a line release request is made. On the other hand, the value of the hooking counter 13a is 1 or more when the line release request is made, it does not release the line, and continues the line. Therefore, while the MFP 1 can perform line release at an early stage when there is no telephone apparatus which can talk, it can switch the speech destination in an early stage without requiring complicated work when there is the telephone apparatus which can talk by preparing the hooking counter 13a which memorizes a number of times that the telephone apparatus of the speech destination is switched. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a telephone device configured to be able to receive a request for an incoming interrupt call, and more particularly to a telephone device capable of continuing or disconnecting a call with a partner at an early stage without requiring complicated work. is there.

  Conventionally, when there is an incoming call (request for an interrupt incoming call) from the second destination during a call with the first destination, the second destination is notified that the incoming call has been received, and the operator is notified. A telephone device having a function of notifying is known. In this telephone device, when the operator knows that an incoming call has been received from the second destination, when the operator operates a short-time on-hook operation or a switching key for switching the destination, the first The call with the other party is put on hold, and the other party is switched to the second party. In addition, when a short-time on-hook operation or a switching key is operated again during a call with the second destination, the destination is switched from the second destination to the first destination.

  In this telephone device, when switching a call destination, if an operation for setting a handset (long-time on-hook operation) is mistakenly performed instead of a short-time on-hook operation, the first partner or the second partner There was a problem that the connection with the other party that was put on hold was also disconnected.

Therefore, in Japanese Patent Application Laid-Open No. 7-15490, when an operation for installing the handset is mistakenly performed when the call with the second partner is terminated, the call with the first partner is continued. A telephone device is disclosed that outputs a ringing tone to inform an operator that there is a partner on hold. In this telephone device, when an operator who knows that there is a party on hold, removes the handset and operates the on-hook operation or switching key for a short time, the call destination is switched to the party on hold. It is possible to prevent the call with the other party on hold from being disconnected due to an erroneous operation. When a busy tone signal is detected when the call from the other party is disconnected while the call is switched to the other party on hold, the ringing tone is stopped and the call with the other party is disconnected. It is also configured as follows.
Japanese Patent Laid-Open No. 7-15490

  However, in the case of a telephone device that outputs a ringing tone while continuing a call with the first destination when an operation for installing the handset is performed, the handset is removed by the operator after the ringing tone is output. Until the time on-hook operation or the switching key is operated, the call with the on-hold partner is continued. Therefore, unless the handset is removed and a short on-hook operation or switch key operation is not performed, the call destination cannot be switched to the other party on hold, so complicated work is required and early switching or disconnection cannot be performed. There was a problem.

  When a call can be made with the other party on hold, the time is added according to the call time until the operator performs an operation of removing the handset and a short on-hook operation or a switch key operation. Since a call charge is charged, there is a problem that a call charge more than necessary is required unless an early connection is made.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a telephone device that can perform continuation or disconnection with a partner at an early stage without requiring complicated work. It is said.

  In order to achieve the above object, the telephone device according to claim 1 can receive a request for an interrupt incoming call from the second terminal device via the communication line during a call with the first terminal device via the communication line. And detecting means for detecting whether or not a request for an incoming interrupt call from the second terminal device has been received during a call with the first terminal device, and the second terminal device using the detecting means. Operating means that is operated when the call destination is switched from the first terminal device to the second terminal device or from the second terminal device to the first terminal device in a state in which reception of an interrupt incoming request from is detected; Storage means for storing change information that changes each time the operation means is operated to switch the call destination to the first terminal device or the second terminal device, and when a call disconnection request is made by the operator, Storage means When the change information determining means for determining the value of the stored change information and the change information determining means determine that the change information is the first value, the call through the communication line is disconnected, And a first control unit that performs control to continue the call through the communication line when the change information is determined by the change information determination unit to be a second value different from the first value. Yes.

  According to a second aspect of the present invention, in the telephone device according to the first aspect, when the operator makes a call disconnection request, the first control means receives the interrupt incoming call request by the detection means. If not detected, control is performed to disconnect the call through the communication line.

  The telephone device according to claim 3 sets the change information stored in the storage means to an initial value when a telephone call with the first terminal device is started in the telephone device according to claim 1 or 2. Initial value setting means for performing addition and subtraction for adding or subtracting 1 to change information stored in the storage means each time the operation means is operated and the call destination is switched to the first terminal device or the second terminal device. And the change information determination means determines the case where the value changed from the initial value of the change information stored in the storage means is an even number as the first value and stores it in the storage means. When the value changed from the initial value of the change information being changed is an odd number, it is determined as the second value, and the first control means is the initial value of the change information stored in the storage means The value changed from is even If it is determined by the change information determination means, the call through the communication line is disconnected and the change from the initial value of the change information stored in the storage means is an odd number. When it is determined by the information determining means, control is performed to switch the call destination to the first terminal device.

  According to a fourth aspect of the present invention, in the telephone device according to the first or second aspect, when a call with the first terminal device is started, change information stored in the storage unit is set to an initial value. Initial value setting means for performing addition and subtraction for adding or subtracting 1 to change information stored in the storage means each time the operation means is operated and the call destination is switched to the first terminal device or the second terminal device. And the change information determining means determines that the value of the change information stored in the storage means is an initial value as the first value and changes stored in the storage means. The case where the value of the information has changed from the initial value is determined as the second value, and the first control means has the value of the change information stored in the storage means as the initial value. Discriminated by the change information discriminating means If the change information determination means determines that the value of the change information stored in the storage means has changed from the initial value, the call via the communication line is disconnected. Control to switch the terminal device of the call destination is performed.

  According to a fifth aspect of the present invention, in the telephone device according to the first or second aspect, when the telephone conversation with the first terminal device is started, the change information stored in the storage means is the first information. A first setting means for setting a value, and when the operation means is operated to switch the call destination to the first terminal device, change information stored in the storage means is set to the first value, And second setting means for setting change information stored in the storage means to the second value when the operation means is operated and the call destination is switched to the second terminal device. The means disconnects the call through the communication line and determines that the change information stored in the storage means is the first value by the change information determination means, and The stored change information is If it is determined by the change information determining means that the value of 2, and performs control to switch the call destination to the first terminal device.

  The telephone device according to claim 6 is the telephone device according to any one of claims 3 to 5, wherein the change information determination means is that the value of the change information stored in the storage means is the second value. And when the first control means performs control to switch the terminal device of the call destination, the call determination means for determining whether or not the terminal device to be switched is capable of making a call via a communication line. If the call discrimination means determines that the call is not possible, the call via the communication line is disconnected, and if the call discrimination means determines that the call is possible, Second control means for performing switching control.

  Note that the call discrimination means detects, for example, whether it is possible to make a call by detecting whether a busy tone signal received when the connection with the terminal device is disconnected on the communication line from the first or second terminal device. It is also possible to determine whether or not a call is possible by detecting the polarity of the terminal connected to the communication line. Here, the polarity of the terminal connected to the communication line is reversed between the state connected to the terminal device via the communication line and the disconnected state. Therefore, by detecting the polarity of the terminal connected to the communication line, it is possible to determine whether or not a call is possible.

  The telephone device according to claim 7 is the telephone device according to any one of claims 3 to 6, wherein the change information determining means is that the value of the change information stored in the storage means is the second value. If it is determined, the inquiry means for inquiring whether or not to switch the call destination terminal device, and the result of the inquiry by the inquiry means are switched before performing the control to switch the call destination terminal device. And a third control means for controlling the switching of the terminal device of the call destination when the call through the communication line is disconnected when there is not, and when the result of the inquiry by the inquiry means is switched.

  The telephone device according to claim 8 is the telephone device according to any one of claims 1 to 7, wherein when the call with the first or second terminal device is disconnected, the first or the second device that disconnects the call. An output means is provided for outputting a refusal message suggesting that a call cannot be made to the second terminal device.

  The output means may output only when the refusal operation means operated to output the refusal message is operated when the call with the first or second terminal device is disconnected, or when the call is not made. You may output with respect to all the terminal devices in a holding | maintenance (call destination is switched to the other terminal device, but it is not cut | disconnected).

  According to the telephone device of claim 1, during the call with the first terminal device via the communication line, it is detected whether or not an interrupt incoming request from the second terminal device is received via the communication line. Is detected. When the operation means is operated in a state where the detection means has detected reception of an interrupt incoming request from the second terminal device, the first terminal device to the second terminal device or the second terminal device to the first terminal device The call destination is switched to. Further, change information that changes every time the operation unit is operated to switch the call destination to the first terminal device or the second terminal device is stored in the storage unit. Therefore, the value of the change information stored in the storage unit differs depending on the number of times the operation unit is operated by the operator and the call destination is switched to the first terminal device or the second terminal device.

  Further, when the operator makes a call disconnect request, the change information value stored in the storage means is determined by the change information determination means, and the change information is the first value by the change information determination means. Is determined by the first control means, while the change information determination means determines that the change information is a second value different from the first value. Then, control for continuing the telephone call via the communication line is performed by the first control means.

  Here, an example of a call state with the first terminal device or the second terminal device when the operation means is operated by the operator will be described. When the call destination after the operation means is operated by the operator is the second terminal device, the call via the communication line of the first terminal device is normally on hold. On the other hand, when the call destination after the operating means is operated by the operator is the first terminal device, since the call with the second terminal device is normally terminated, the communication line with the second terminal device is The call through is disconnected.

  According to the telephone device of the first aspect, whether the value of the change information that changes every time the operation means is operated by the operator and the call destination is switched to the first terminal device or the second terminal device is the first value. Depending on whether the value is 2, the first control means can control whether the call through the communication line is disconnected or continued.

  Therefore, for example, when the value of the change information is the first value, if the call destination after the operation means is operated by the operator is associated with the first terminal device, the call destination is the first value. If it is a terminal device and the operator makes a disconnection request, the call over the communication line can be disconnected. Also, for example, when the value of the change information is the second value, if the call destination after the operation means is operated by the operator is associated with the second terminal device, the call destination is the second value. If it is a terminal device and a disconnect request is made by the operator, the call over the communication line can be continued.

  Therefore, since it is possible to control whether the call through the communication line is disconnected or continued according to the value of the change information, the communication via the communication line is possible regardless of whether the first terminal device or the second terminal device can make a call. The effect that it is possible to prevent the disconnected call from being disconnected and to prevent the call through the communication line from being continued even though the first terminal device or the second terminal device is in a state where the call is not possible. There is.

  In addition, since the disconnection and continuation of the call through the communication line are controlled by the first control means, the conventional operation of removing the handset and the short on-hook operation or the operation of the switching key are not required, which is complicated. This is advantageous in that it can be performed early without taking a lot of work.

  According to the telephone device of the second aspect, in addition to the effect achieved by the telephone device of the first aspect, when the operator makes a call disconnect request, the reception of the interrupt incoming call request is detected by the detecting means. Otherwise, control for disconnecting the call via the communication line is performed by the first control means. Here, when a call disconnection request is made by the operator, the interrupt incoming call request is not received because a call is made through the communication line only with the callee before the disconnection request is made. Therefore, it is not necessary to continue the call. Therefore, when it is not necessary to continue the call through the communication line, there is an effect that the first control unit can disconnect early.

  According to the telephone device of the third aspect, in addition to the effect produced by the telephone device according to the first or second aspect, the change information stored in the storage means when a call with the first terminal device is started. Is set to the initial value by the initial value setting means, and when the call destination is switched to the first terminal device or the second terminal device by operating the operation means, every time the call destination is switched, the addition / subtraction means stores it in the storage means. 1 is added to or subtracted from the stored change information. Therefore, the change information stored in the storage means changes by one each time the operation means is operated and the call destination is switched. Therefore, if the value changed from the initial value of the change information is an even number, the first terminal If the device is the call destination and the value changed from the initial value of the change information is an odd number, the second terminal device is the call destination.

  Then, when a change request is made by the operator, when the change information determination unit determines that the value changed from the initial value of the change information stored in the storage unit is an even number (first value), Control for disconnecting a call through the communication line is performed by the first control means, and the change information determination means that the value changed from the initial value of the change information stored in the storage means is an odd number (second value). Is determined by the first control means, the control to switch the call destination to the first terminal device is performed.

  Therefore, if the value changed from the initial value of the change information stored in the storage means is an even number and the first terminal device is a call destination, the call via the communication line can be disconnected by the first control means, and stored. If the value changed from the initial value of the change information stored in the means is an odd number and the second terminal device is a call destination, the call via the communication line can be switched to the first terminal device by the first control means. it can. Therefore, when a disconnection request is made by the operator, when there is no terminal device that can make a call (when the call destination is the first terminal device), it is possible to disconnect early and the terminal device that can make a call When there is a call (when the call destination is the second terminal device), there is an effect that the call destination can be switched to the terminal device capable of calling.

  According to the telephone device of the fourth aspect, in addition to the effect produced by the telephone device according to the first or second aspect, the change information stored in the storage means when the call with the first terminal device is started. Is set to the initial value by the initial value setting means, and when the call destination is switched to the first terminal device or the second terminal device by operating the operation means, every time the call destination is switched, the addition / subtraction means stores it in the storage means. 1 is added to or subtracted from the stored change information. Therefore, since the change information stored in the storage means changes by one each time the operation means is operated and the call destination is switched, if the change information stored in the storage means is an initial value, If the call destination has never been switched from one terminal device, and the change information has changed from the initial value, the call destination has been switched from the first terminal device to the second terminal device at least once. become.

  When the change information determining means determines that the value of the change information stored in the storage means is the initial value (first value), the control for disconnecting the call through the communication line is the first control means. When the change information determining means determines that the value of the change information stored in the storage means has changed from the initial value (second value), the control for switching the terminal device to be called is performed. 1 is performed by the control means.

  Therefore, when the change request is made by the operator and the change information is the initial value and the call destination is the first terminal device, the call via the communication line can be disconnected by the first control means, and the change information If it is changed from the initial value and the call destination is either the first or second terminal device, the call through the communication line can be switched to the first terminal device or the second terminal device by the first control means. it can. Therefore, when a disconnection request is made by the operator and there is no terminal device that can make a call (when the call destination is the first terminal device), early disconnection can be performed, and the first terminal device or When there is a possibility that the second terminal device is on hold (when the call destination is the first or second terminal device), there is an effect that the call destination can be switched to the held terminal device.

  According to the telephone device of the fifth aspect, in addition to the effect achieved by the telephone device according to the first or second aspect, the change information stored in the storage means when a call with the first terminal device is started. Is set to the first value by the first setting means. When the operation means is operated and the call destination is switched to the first terminal device, the change information stored in the storage means is set to the first value by the first setting means, and the operation means is operated to call the call destination. Is switched to the second terminal device, the change information stored in the storage means is set to the second value by the second setting means. Therefore, if the change information is the first value, the call destination is the first terminal device, and if the change information is the second value, the call destination is the second terminal device.

  When the change information stored in the storage means is determined to be the first value by the change information determination means, the first control means performs control to disconnect the call via the communication line, and the storage means When the change information stored in the second value is determined by the change information determination means, the first control means performs control for switching the call destination to the first terminal device.

  Therefore, when the operator makes a disconnection request, if the change information is the first value and the call destination is the first terminal device, the first control unit performs control to disconnect the call via the communication line. If the change information is the second value and the communication destination is the second terminal device, control for switching the call destination to the first terminal device is performed by the first control means. Therefore, when a disconnection request is made by the operator, when there is no terminal device that can make a call (when the call destination is the first terminal device), it is possible to disconnect early and the terminal device that can make a call When there is a call (when the call destination is the second terminal device), there is an effect that the call destination can be switched to the terminal device capable of calling.

  According to a sixth aspect of the present invention, in addition to the effect achieved by the telephone device according to any one of the third to fifth aspects, the change information stored in the storage means changes when the value is the second value. When the first control unit performs control for switching the terminal device to be called as determined by the information determining unit, the call determining unit determines whether or not the terminal device to be switched is capable of making a call via the communication line. Determined. If the call discrimination means determines that the call is impossible, the second control means performs control to disconnect the call via the communication line, and if the call discrimination means determines that the call is possible, Control for switching the previous terminal device is performed by the second control means.

  Therefore, when the terminal device of the call destination is switched by the first control means, the call is disconnected or the call destination is switched depending on whether or not the switched terminal device is capable of making a call via the communication line. It can be controlled by two control means. Therefore, when the terminal device of the call destination to be switched cannot call, the call is not switched to the terminal device, so that there is an effect that early disconnection can be performed.

  According to the telephone device of the seventh aspect, in addition to the effect achieved by the telephone device according to any one of the third to sixth aspects, the change information stored in the storage means changes when the value is the second value. When the information is determined by the information determining means, the inquiry means asks whether or not to switch the first or second terminal device before the control for switching the terminal device to be called is performed. When the result of the inquiry by the inquiry means does not switch, the third control means controls to disconnect the call through the communication line, and when the result of the inquiry by the inquiry means switches. Is controlled by the third control means to switch the terminal device to be called.

  Therefore, before the control of switching the terminal device of the call destination is performed, the operator is inquired whether to switch the terminal device, and the call is disconnected or the call destination is switched depending on the result of the inquiry. Is controlled by the third control means. Therefore, since the call can be disconnected or the call destination can be switched according to the will of the operator, there is an effect that a convenient telephone device can be provided.

  According to the telephone device according to claim 8, in addition to the effect of the telephone device according to any one of claims 1 to 7, the call is disconnected when the call with the first or second terminal device is disconnected. Since the output means outputs a refusal message indicating that a call cannot be made to the first or second terminal device, the call with the terminal device (partner) that the operator does not want to call can be rejected. There is an effect that it is possible to provide a convenient telephone device.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. First, a multi-function peripheral device (hereinafter referred to as “MFP (Multi Function Peripheral)”) 1 which is one of telephone devices according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing an electrical configuration of an MFP (master unit) 1 and a slave unit 2.

  An MFP 1 shown in FIG. 1 is a telephone device having various functions such as a call function, a facsimile function, a printer function, a scanner function, and a copy function. Note that the call function possessed by the MFP 1 of the present embodiment includes a third function via the telephone line network 100 in addition to the function of making a call with the other party's telephone device (terminal device) via the telephone line network 100. A call waiting function (registered trademark) for switching a call destination to a third party while holding a call with a telephone device that was in a call when an incoming call is received from the caller. The facsimile function, printer function, scanner function, and copy function are well-known techniques in the MFP 1, and detailed descriptions thereof are omitted.

  The MFP 1 is a base unit of a digital cordless phone that can make a wireless call with the handset 2. Therefore, the MFP 1 is configured so that the handset 23 or the handset 2 can be selectively used according to the application, and further, an extension call can be performed between the handset 23 and the handset 2.

  As illustrated in FIG. 1, the MFP 1 includes a CPU 11, a ROM 12, a RAM 13, a flash memory 14, an operation key 15, a liquid crystal display unit (hereinafter referred to as “LCD: Liquid Crystal Display”) 16, a speaker 17, a timing circuit 18, a scanner. 19, a printer 20, a modem 21, an NCU (Network Control Unit) 22, a handset 23, a timing circuit 24, and a digital cordless interface (hereinafter referred to as "digital cordless I / F") 24 connected to an antenna 25, A hook switch 28 is mainly provided, and these are connected to each other via a bus line 27.

  The CPU 11 performs an operation for controlling each unit connected by the bus line 27 according to fixed values and programs stored in the ROM 12 and the flash memory 14 or according to various signals (data) transmitted / received via the digital cordless I / F 24. It is a processing device.

  The ROM 12 is a non-rewritable memory that stores various control programs executed by the MFP 1 and fixed value data. The ROM 12 has a decline message storage area 12a. The rejection message storage area 12a stores voice data that is transmitted when a call with the other party is disconnected. For example, the voice data is data that outputs a voice “I can't answer the phone now”.

  The RAM 13 is a rewritable memory for temporarily storing various data. The RAM 13 is provided with a hooking counter 13a. The hooking counter 13a is a counter that stores a value that changes when the hooking key 15a or the hooking key 35a is operated to switch the telephone device to be called. The hooking counter 13a is set to an initial value (value 0) in S101 of a call monitoring process (see FIG. 2) described later, and is incremented by 1 each time a hooking signal is output (S105).

  The flash memory 14 is a rewritable nonvolatile memory, and the data stored in the flash memory 14 is retained even after the MFP 1 is turned off.

  The operation key 15 is provided on an operation panel (not shown), and includes a numeric button, a start button, a function operation button, and the like. The user can operate the operation keys 15 to turn on / off the MFP 1, switch functions, and instruct various operations.

  Further, the operation key 15 is provided with a hooking key 15a and a decline / cut key 15b. The hooking key 15a is an operator that is operated when the call destination is switched to the third party when an incoming call from the third party is received via the telephone line network 100. The refusal or disconnect key 15b is an operator that is operated when a call via the telephone line network 100 is disconnected while receiving an incoming call from a third party via the telephone line network 100. In the present embodiment, the rejection or disconnection key 15b is configured such that either “notification” or “disconnection” can be assigned in advance by an operator (user).

  The LCD 16 is a liquid crystal display unit provided on an operation panel (not shown), and displays a menu, an operation state, and the like corresponding to the operation of the operation keys 15. Further, the LCD 16 displays an image read by the scanner function, or an image transmitted from the PC 51 for printing.

  The speaker 17 outputs various sounds according to the situation (for example, operation sound of the operation key 15, an attention sound when an error occurs, an incoming ringing sound, etc.). Can be notified.

  The timing circuit 18 has an internal clock that records the current date and time, and is a known circuit that calculates the required time by comparing the date and time when the timing starts and the current date and time.

  The scanner 19 reads an image from a document set on a document reading table (not shown) based on an instruction from the CPU 11, and displays image data on the LCD 16 or image data that can be printed by the printer 20. Is to be generated. The image data read by the scanner 19 is stored in a predetermined storage area in the RAM 13 when the MFP 1 is set to the facsimile mode, the scanner mode, or the copy mode.

  The printer 20 performs printing on a recording sheet in a paper feed cassette (not shown) based on an instruction from the CPU 11. When the MFP 1 is set to the facsimile mode, the scanner mode, or the copy mode, the printer 20 performs printing based on the image data stored in the RAM 13 described above, or an image transmitted from an external personal computer. Printing is performed based on the data.

  The printer 20 of the present embodiment is a so-called ink jet type image recording apparatus (ink jet recording apparatus) that records an image on recording paper by selectively ejecting ink droplets based on image data to be printed. It is configured.

  Based on an instruction from the CPU 11, the modem 21 modulates transmission data stored in the RAM 13 into an image signal that can be transmitted to the telephone line network 100 and transmits the image signal via the NCU 22 or from the telephone line network 100 via the NCU 22. The input image signal is received and demodulated into image data that can be displayed on the LCD 16 or printed by the printer 20.

  The NCU 22 is connected to the telephone line network 100 and performs control such as transmission of a dial signal to the telephone line network 100, response of a calling signal from the telephone line network 100, and output of a disconnection signal to the telephone line network 100. Is what you do. The NCU 22 also performs control to detect reception of an incoming call signal indicating an incoming call from a third party and to output a hooking signal for switching the telephone device of the call destination.

  The handset 23 is a device for making a call with the handset 2 and an external telephone device (first terminal device or second terminal device) connected via the telephone line network 100, and an audio analog signal ( A microphone (not shown) for converting audio data) into a digital signal (call data) and converting the digital signal into an analog signal; and a speaker (not shown) for outputting (sounding) the sound to the outside. ing.

  The hook switch 28 is provided on an installation base (not shown) on which the handset 23 is installed, and is a sensor that detects a state in which the handset 23 is installed on the installation base. Therefore, it can be determined from the detection result of the hook switch 28 whether the handset 23 is installed in the MFP 1 or whether the handset 23 is detached from the MFP 1.

  In the following description, the operation for installing the handset 23 on the installation base will be described as “on-hook operation”, and the operation for removing the handset 23 from the installation base will be described as “off-hook operation”. Further, the operation of pressing the hook switch 28 by the operator is also an on-hook operation.

  The handset 23 is electrically connected to the NCU 22 or the digital cordless I / F 24 when an off-hook operation is performed by the operator. In addition, when the operator performs an on-hook operation, the electrical connection between the handset 23 and the NCU 22 or the digital cordless I / F 24 is released.

  The digital cordless I / F 24 is connected to the cordless antenna 25. As a result of the connection between the handset 23 and the digital cordless I / F 24 by an off-hook operation of the handset 23, the MFP 1 and the handset 2 are wirelessly connected. Connected by communication.

  Further, when voice data is sent from the handset 23, the digital cordless I / F 24 converts the voice data into a digital signal for wireless communication and transmits (outputs) the data to the slave unit 2. On the other hand, when a digital signal for wireless communication transmitted from the handset 2 is received, the received digital signal is converted into voice data and output to the handset 23.

  Next, the subunit | mobile_unit 2 is demonstrated. The subunit | mobile_unit 2 has mainly CPU31, ROM32, RAM33, flash memory 34, operation key 35, LCD36, handset 37, and digital cordless I / F38, and these are mutually connected via the bus line 40. Yes.

  The CPU 31 is an arithmetic device that controls each unit connected by the bus line 40 according to fixed values and programs stored in the ROM 32 and the flash memory 34, or according to various signals transmitted and received via the digital cordless I / F 38. .

  The ROM 32 is a non-rewritable memory for storing various control programs and fixed values executed by the slave unit 2, and the RAM 33 is a rewritable memory for temporarily storing various data. The flash memory 34 is a rewritable nonvolatile memory, and the data stored in the flash memory 34 is retained even after the handset 31 is powered off.

  The operation key 35 includes a numeric button (ten key), a call button, a function operation button, and the like. The operation key 35 is operated when performing various functions and settings of the handset 2 or when performing a call via the telephone line network 100. Further, the operation key 35 is provided with a hooking key 35a and a rejection / disconnection key 35b similar to the hooking key 15a and the rejection / disconnection key 15b provided in the MFP 1.

  The LCD 36 displays various types of information during a call or in standby, and displays, for example, the telephone number of the other party input by the operation key 35.

  The handset 37 is a device for making a call with the MFP 1 (when making an extension call) or with a partner connected via the telephone line network 100, and a microphone (not shown) and a speaker (see FIG. (Not shown).

  The handset 37 is electrically connected to the digital cordless I / F 38 when an off-hook operation (for example, a “call key” pressing operation) is performed by operating the operation key 35. When an operation (for example, pressing operation of the “cut key”) is performed, the electrical connection with the digital cordless I / F 38 is released.

  The digital cordless I / F 38 is connected to the cordless antenna 39. Then, as a result of connecting the handset 37 and the digital cordless I / F 38 by an off-hook operation of the operation key 35 or the like, the handset 2 and the MFP 1 are connected by wireless communication.

  When voice data is sent from the handset 37, the digital cordless I / F 38 converts the voice data into a digital signal for wireless communication and transmits (outputs) it to the MFP 1. On the other hand, when a wireless communication digital signal transmitted from the MFP 1 is received, it is converted into voice data and output to the handset 37.

  Here, an operation and a call state when making a call with an external telephone device using the call waiting function (registered trademark) in the MFP 1 will be described. When MFP 1 first receives a call signal from the first telephone device via telephone line network 100, MFP 1 outputs a ringing tone to inform the operator that there is an incoming call from the first telephone device. When an operator who knows that there has been an incoming call from the first telephone apparatus removes the handset 23 from the MFP 1 (that is, when an off-hook operation is performed), a response signal is output via the telephone line network 100, A call with the telephone device 1 is started.

  Further, when there is an incoming call from the second telephone device during a call with the first telephone device and a call incoming signal is received via the telephone network 100, the first telephone device and the speaker of the handset 23 are connected to the speaker. A notification sound is output over the call voice to inform the operator that an incoming call has been received from the second telephone device.

  When the operator operates the hooking key 15a to make a call with the second telephone device, a hooking signal is output via the telephone line network 100, and the call state with the first telephone device is on hold. At the same time, the call destination is switched to the second telephone device, and a call with the second telephone device is started.

  Thereafter, each time the hooking key 15a is operated during a call with the first telephone apparatus or the second telephone apparatus, a hooking signal is output via the telephone line network 100, and Is switched to the on-hold state, and the call destination is switched to the telephone device on hold.

  Next, a call monitoring process executed by the CPU 11 of the MFP 1 will be described with reference to FIG. FIG. 2 is a flowchart showing call monitoring processing executed by the CPU 11 of the MFP 1. The call monitoring process is a process executed when the MFP 1 or the handset 2 starts a call with an external telephone device via the telephone line network 100. In the following description, a case where a call is made with the outside using the handset 23 of the MFP 1 will be described.

  When the call monitoring process is executed, first, the value of the hooking counter 13a is set to 0 (S101), and it is confirmed whether or not a call is currently being made with an external telephone device (S102). If it is not currently in a call with an external telephone device in the process of S102 (S102: No), it is not necessary to monitor the call, and the call monitoring process is terminated.

  On the other hand, in the process of S102, if a call is currently being made with an external telephone device (S102: Yes), it is confirmed whether or not the hooking key 15a has been operated (S103). As described above, the hooking key 15a is used to switch the telephone device to be called in a state in which an incoming call signal is received during a call with the first telephone device (when an incoming call is received from the second telephone device). Operated to switch.

  Therefore, if the hooking key 15a is operated in the process of S103 (S103: Yes), a hooking signal is output to the outside via the telephone line network 100 in order to switch the telephone device to be called (S104). Then, since the external device of the call destination is switched, 1 is added to the value of the hooking counter 13a (S105), and the process returns to S102 in order to confirm again whether the call is in progress.

  On the other hand, if the hooking key 15a is not operated in the process of S103 (S103: No), it is confirmed whether or not a line release request has been made (S106). The process of S106 is a process of confirming whether or not the handset 23 has been installed in the MFP 1 by the operator (on-hook operation has been performed) and a request for releasing the line during a call (disconnect request) has been made.

  If it is determined in S106 that the call with the telephone device in progress is continued and a line release request is not made (S106: No), the process returns to S102 to check again whether the call is in progress. If an on-hook operation is performed and a line release request is made (S106: Yes), the process proceeds to S107.

  In other words, the processing from S102 to S106 is repeatedly executed until the handset 23 is installed by the operator. Specifically, if a call is being made with the same telephone device, the processing of S102, S103, and S106 is repeatedly executed, and the processing of S102, S103 to S105 is executed only when the hooking key 15a is operated to switch the call destination. Is done.

  In the process of S107, since it is a timing to disconnect the call with the telephone device that is currently on-hook by the operator, whether or not the call destination telephone device has been switched since the call with the external telephone device is started. In order to check whether or not the value of the hooking counter 13a is greater than 0 (S107).

  That is, the value of the hooking counter 13a is set to 0 in the processing of S101, and 1 is added every time the hooking key 15a is operated (S105). If the value of the hooking counter 13a is 0, the call destination Since the telephone device has never been switched, the telephone device that is in communication is the first telephone device. On the other hand, if the value of the hooking counter 13a is 1 or more, since the telephone device of the call destination is switched at least once by operating the hooking key 15a, the telephone device during the call is the first telephone device. Whether it is a second telephone device or not is unknown.

  Therefore, if the value of the hooking counter 13a is 0 in the process of S107 (S107: No), the call destination has never been switched, and there is no telephone device whose call state is on hold. The line connected via is immediately disconnected (S108), and the call monitoring process is terminated.

  On the other hand, if the value of the hooking counter 13a is 1 or more in the process of S107 (S107: Yes), the destination telephone device has been switched at least once. Is displayed on the LCD 16 and an inquiry is made on the LCD 16 as to whether or not to disconnect the call with the other party capable of calling (S111).

  In the present embodiment, the display of the processing of S111 displays “call / disconnect?” Together with “other party 1 on hold” or “second party 2 on hold”. The operator confirms the other party that can make a call and performs an off-hook operation for removing the handset 23 from the MFP 1 when he / she wants to make a call. To operate.

  In addition, the other party that can talk can be displayed by detecting the connection state with an external telephone device (for example, detecting a busy tone signal described later or detecting polarity reversal), or the value of the hooking counter 13a. It may be displayed with reference to. The value of the hooking counter 13a is set to 0 in the process of S101, and 1 is added in the process of S105 every time the hooking key 15a is operated to switch the telephone device to be called. For example, the call destination is the first telephone device, and if the value is an odd number, the call destination is the second telephone device. Therefore, when referring to the value of the hooking counter 13a, if the value of the hooking counter 13a is an even number, “Pending destination 2” is displayed, and if the value of the hooking counter 13a is an odd number, 1 pending "is displayed.

  In addition, the display of the processing in S111 can be performed by displaying the phone number of the other party that can make a call or the name detected by the phone book verification if it has a known number display, catch number display, or name display function. It can be done. Further, instead of displaying “call / disconnect?” On the LCD 16, voice guidance is generated through the handset 23 to pronounce “Do you want to disconnect? If it is selected, the line may be disconnected (S108).

  In the process of S112, since the operator has performed an on-hook operation of the handset 23, in order to switch the other party, a hooking signal is output via the telephone network 100 (S112), and the hooking signal is output and switched. It is checked whether a busy tone signal is received from the received telephone device (S113).

  If a busy tone signal has not been received from the switched telephone device in the process of S113 (S113: No), a call with the switched telephone device is possible, so a speaker (not shown) provided in MFP 1 is possible. ) Or a speaker (not shown) provided in the handset 23 (S114), prompting the operator to perform an off-hook operation of the handset 23.

  When the ringing tone is sounded in the process of S114, it is confirmed whether or not the operator has operated the refusal or disconnect key 15b in the process of S111 (S115) and whether or not an off-hook operation has been performed. (S116). Note that the processing of S115 and the processing of S116 are repeatedly executed until the operation of the refusal or cut key 15b or the off-hook operation is confirmed (S115: No, S116: No).

  When the operator performs an off-hook operation for removing the handset 23 (S115: No, S116: Yes), the telephone conversation with the on-hold telephone device is started, and the process returns to S101. If the process in S116 is Yes, an off-hook operation is performed, so that the ringing sound generated in the process in S114 is stopped.

  In the process of S116, when the operator performs an off-hook operation for removing the handset 23, the process returns to the process of S101 because the operator has performed an on-hook operation to disconnect the line connected via the telephone network 100. This is because it is a later call and is regarded as a new call, and the value of the hooking counter 13a is initialized in the process of S101.

  Also, in the process of S115, if the refusal or cutting key 15b has been operated by the operator (S115: Yes), whether or not the refusal or cutting key 15b preselected by the operator is “rejected”. Is confirmed (S117).

  If the refusal or the assignment of the disconnect key 15b is “refusal” in the processing of S117 (S117: Yes), the refusal message is read from the refusal message storage area 12a, and the refusal message is sent to the switched telephone device. (S118) If the assignment of the refusal or disconnect key 15b is “disconnect” (S117: No), the line connected via the telephone network 100 is disconnected without executing the process of S118 (S108). ), The call monitoring process is terminated. Even when the process of S115 is Yes, the line connected via the telephone line network 100 is disconnected thereafter, so that the sound of the ringing sound generated in the process of S114 is stopped.

  On the other hand, if a busy tone signal is received from the switched telephone device by outputting a hooking signal in the process of S113 (S113: Yes), the operator of the switched telephone device performs an on-hook operation to disconnect the call. Therefore, it becomes impossible to make a call with the switched telephone device. Therefore, the line connected via the telephone line network 100 is disconnected (S108), and the call monitoring process is terminated.

  In the description of FIG. 2, the case where a call is made with the outside using the handset 23 has been described, but the same processing is performed when a call is made with the handset 2. However, when making a call with the outside using the handset 2, the hooking key 15a is replaced with the hooking key 35a, and the rejection or disconnection key 15b is replaced with the rejection or disconnection key 35b.

  The call monitoring process can also be applied to an on-hook call in which a call is made using a microphone and a speaker instead of the handset 23. When the call monitoring process is executed in an on-hook call, after the process of S113 becomes Yes, the monitor state is set, and the process of ringing the ringing sound of S114 may be omitted. Further, in the process of S116, when a predetermined time elapses and a time-out occurs, an on-hook call state may be set and the process proceeds to S101.

  As described above, the MFP 1 adds 1 to the value of the hooking counter 13a every time the operator operates the hooking key 15a to switch the telephone device to be called. If the value of the hooking counter 13a when the operator makes an on-hook operation to make a line release request is 0, the call destination has never been changed, and the first telephone device (first telephone device) Therefore, the line connected via the telephone line network 100 is disconnected as it is. Therefore, in MFP 1 having a call waiting function (registered trademark), when there is no other telephone device that can make a call, that is, when there is no incoming call from a third party, the line can be disconnected early.

  On the other hand, if the value of the hooking counter 13a when the operator makes an on-hook operation and makes a line release request is 1 or more, the telephone apparatus of the call destination has been switched at least once. May exist. The MFP 1 does not immediately disconnect the line connected via the telephone line network 100, but allows the operator to recognize the other party on hold and disconnects or continues the call according to the operator's selection. Therefore, when there is a possibility that a telephone apparatus on hold (a telephone apparatus capable of making a call) exists, it is possible to prevent a line connected via the telephone line network 100 from being disconnected immediately. Further, when the operator makes a call with the on-hold telephone device, it is only necessary to perform an off-hook operation for removing the handset 23, so that no complicated work is required and a call with the on-hold telephone device is performed. If it is desired to reject the request, only the refusal or disconnection key 15b may be operated.

  Accordingly, in the MFP 1 having the call waiting function (registered trademark), by providing the hooking counter 13a for storing the number of times the telephone device of the call destination is switched, when there is no telephone device capable of making a call, the circuit can be disconnected early. At the same time, when there is a telephone device capable of making a call, it is possible to make a call by switching the call destination without requiring complicated work.

  When the value of the hooking counter 13a is 1 or more and there is a telephone apparatus on hold, an inquiry as to whether or not to make a call with the telephone apparatus on hold is displayed on the LCD 16, so that the operator's will The call can be disconnected or the telephone device of the call destination can be switched. Therefore, the functions of the MFP 1 can be enhanced and usability can be improved.

  Also, when the operator wishes to talk to the other party on hold and switches the telephone device to which the call is held, confirms the reception of the busy tone signal and confirms whether or not the telephone device can be talked to Judgment. Then, if the switched telephone device cannot talk, the circuit is disconnected as it is, and if the switched telephone device can talk, the telephone call can be continued. Accordingly, it is possible to prevent the telephone call from being continued even though the switched telephone device is disabled.

  In addition, since the decline message is sent before the operator refuses the call with the other party on hold and disconnects the line, it is possible to reduce discomfort to the operator of the telephone device at the call destination. .

  Further, when the refusal or the assignment of the cut key 15b is set to “disconnect”, it is possible to perform the disconnection without sending a refusal message, and therefore it is possible to perform early disconnection accordingly.

  Next, a second embodiment will be described with reference to FIGS. 3 and 4. FIG. 3 is a flowchart showing the call monitoring process executed by the CPU 11 of the MFP 1 according to the second embodiment. FIG. 4 is a diagram schematically showing a connection state between the MFP 1 and the external telephone device 101. In addition, the same code | symbol is attached | subjected to the part same as 1st Embodiment, and the description is abbreviate | omitted.

  Here, the changes of the second embodiment from the first embodiment will be described. In the MFP 1 according to the first embodiment, the disconnection or continuation of the call via the telephone line network 100 is determined based on whether the number of times the call destination is switched by operating the hooking key 15a is 0 or 1 or more. It was. Instead, in the MFP 1 according to the second embodiment, the disconnection or continuation of the call via the telephone network 100 is determined based on whether the number of times the call destination is switched by operating the hooking key 15a is even or odd. To do.

  Further, the MFP 1 according to the first embodiment is configured to determine whether or not the switched call destination is able to talk after receiving the busy tone signal after the hooking signal is output. Instead of this, the MFP 1 of the second embodiment is configured to determine whether or not the switched call destination is capable of making a call based on whether or not the polarity is reversed. The polarity will be described later.

  Further, the MFP 1 according to the first embodiment is configured to determine the line release request based on whether or not the handset 23 is operated on-hook. Instead of this, the MFP 1 of the second embodiment is configured to determine whether the line release request is based on whether or not the handset 23 is operated on-hook and whether or not the refusal or disconnect key 15a is operated.

  As shown in FIG. 3, after the call monitoring process is executed by the CPU 11 of the MFP 1 of the second embodiment, when the operator operates the on-hook operation or the rejection or disconnection key 15b to make a line release request (S106: Yes), it is confirmed whether or not the value of the hooking counter 13a is an even number (S201).

  In the process of S101, the value of the hooking counter 13a is set to 0, and 1 is added every time the hooking key 15a is operated to switch the telephone device to be called (S105). Is an even number, the call destination is the first telephone device, and if the hooking counter 13a is an odd number, the call destination is the second telephone device.

  If the value of the hooking counter 13a is an even number (0, 2, 4, 6...) As a result of the processing of S201 (S201: Yes), the telephone device of the call destination becomes the first telephone device, Before disconnecting the line via the line network 100, the operator confirms whether or not the disconnection or disconnection key 15b is operated to make a line release request (S202).

  As a result of the process of S202, when the operator refuses or operates the disconnect key 15b to make a line release request (S202: Yes), the process proceeds to S117, and thereafter the same process as in the first embodiment. Execute.

  On the other hand, as a result of the process of S202, when an on-hook operation is performed by the operator and a line release request is made (S202: No), the processes of S117 and S118 are not executed, that is, without a rejection message. The line is disconnected (S108). It should be noted that a series of processes of S202, S117, and S118 may be executed before the process of S112.

  If the value of the hooking counter 13a is an odd number (1, 3, 5, 7...) In the process of S201 (S201: No), as in the first embodiment, An inquiry for connection / disconnection is displayed (S111), a hooking signal is output (S112), and it is confirmed whether the polarity of the connection with the telephone device switched by the output of the hooking signal is reversed (S203). .

  Here, the polarity in the MFP 1 will be described with reference to FIG. In the description of FIG. 4, both the MFP 1 and the external telephone apparatus 101 have two cables connected to the telephone line network 100 connected to the L1 and L2 terminals, respectively. The L1 and L2 terminals of the MFP 1 and the external telephone device 101 are respectively supplied with either a positive (+) voltage or a negative (−) voltage. In addition, the state where the L1 and L2 terminals are connected by a dotted line is a state where an on-hook operation is performed (a state where communication is not possible), and the state where the L1 and L2 terminals are connected by a solid line is an off-hook operation. This means that the user is in a state of being able to talk.

  FIG. 4A is a diagram showing a state where the MFP 1 and the external telephone device 101 are responding. As shown in FIG. 4A, both the MFP 1 and the external telephone device 101 are in a state where the L1 terminal and the L2 terminal are connected by a solid line and can talk. Further, the MFP 1 has a negative voltage at the L1 terminal and a positive voltage at the L2 terminal, and the external telephone apparatus 101 has a positive voltage at the L1 terminal and a negative voltage at the L2 terminal. . This state is a state where the polarity is not reversed.

  FIG. 4B is a diagram showing a state in which the MFP 1 and the external telephone device 101 are disconnected. As shown in FIG. 4B, the MFP 1 is in a state where the L1 terminal and the L2 terminal are connected by a solid line and can talk, but the external telephone apparatus 101 has a call in which the L1 terminal and the L2 terminal are connected by a dotted line. It is impossible. Further, the MFP 1 has a positive voltage at the L1 terminal and a negative voltage at the L2 terminal, and the external telephone apparatus 101 has a positive voltage at the L1 terminal and a negative voltage at the L2 terminal. . That is, when the connection between MFP 1 and external telephone apparatus 101 changes from responding to disconnecting, the polarities of the L1 terminal and L2 terminal of MFP 1 are reversed.

  Returning to FIG. If the polarity is reversed (S203: Yes) in the process of S203, as shown in FIG. 4B, the switched telephone apparatus has disconnected the call, so the line is disconnected as it is. Then, the call monitoring process ends.

  On the other hand, in the process of S203, as shown in FIG. 4A, if the polarity is not reversed (S203: No), a call with the switched call destination is possible. It is confirmed whether or not a line release request has been made by operating the refusal or disconnect key 15b (S204).

  In the processing of S204, if the operator has refused or operated the disconnect key 15b to make a line release request (S204: Yes), the handset 23 has not been operated on-hook and there is no need to ring a ringing tone. If the operator makes an on-hook operation and makes a line release request (S204: No), the process of S114 is performed as in the first embodiment. The process proceeds to S115.

  Further, if the operator's operation in the processing of S111 is not refused or disconnected key 15b in the processing of S115 (S115: No), an off-hook operation has been performed by the operator or a line release request has been refused by the refused or disconnected key 15b. It is confirmed whether it has been made (S205).

  If the line release request is refused or made by the disconnect key 15b in the process of S205 (S205: Yes), the handset 23 is not operated on-hook and no off-hook operation is required, so the process proceeds to S101 as it is. . On the other hand, if the line release request is made by an on-hook operation, a process for confirming whether or not an off-hook operation has been performed is executed as in the first embodiment.

  As described above, in the MFP 1 according to the second embodiment, if the value of the hooking counter 13a when an off-hook operation is performed by the operator and a line release request is made is an even number, the call destination is the first telephone device. If the line via the telephone line network 100 is disconnected as it is and the value of the hooking counter 13a is an odd number, the call destination becomes the second telephone device, and the other party who is on hold can be called without disconnecting the line immediately. It can be displayed and the operator can select whether to disconnect or continue.

  Therefore, as in the first embodiment, in the MFP 1 having the call waiting function (registered trademark), when the hooking counter 13a for storing the number of times the telephone apparatus of the call destination is switched is provided, there is no telephone apparatus capable of making a call. If there is a telephone device capable of making a phone call at an early stage, a complicated operation is not required and a call can be made by switching the call destination.

  In addition, if a line release request is made during a call with the first telephone device by operating the refusal or disconnect key 15b, a refusal message can be sent to the telephone device that was busy. It is possible to prevent the line with the destination from being suddenly disconnected and to reduce discomfort for the operator of the destination.

  Further, if a line opening request is made during a call with the second telephone device by operating the refusal or disconnect key 15b, and the first telephone device as the switched call destination is able to make a call, a ringing tone is generated. Since the call can be continued as it is without ringing (so-called monitor state), the call via the telephone line network 100 can be continued without requiring an unnecessary operation.

  The present invention has been described above based on the embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications and changes can be easily made without departing from the spirit of the present invention. Can be inferred.

  For example, in the above embodiment, the hooking counter 13a is configured such that the initial value is 0 and 1 is added every time the telephone device of the call destination is switched. 1 may be subtracted every time the telephone device is switched. In this configuration, it is checked in step S107 whether the value of the hooking counter 13a is smaller than 100. On the other hand, in the process of S201, since both initial values are even, it is only necessary to confirm whether the value of the hooking counter 13a is even or odd.

  In the above embodiment, the hooking counter 13a is configured such that the initial value is 0 and 1 is added each time the telephone device at the call destination is switched. You may comprise so that 1 and 0 may be memorize | stored alternately, whenever an apparatus is switched. That is, a hooking flag is provided, which is turned off when the call destination is the first telephone device (corresponding to the first setting device of the telephone device according to claim 5), and is turned on when the call destination is the second telephone device. (Corresponding to the second setting means of the telephone device according to claim 5). In this configuration, if the hooking flag is off in step S107, the process proceeds to step S108. If the hooking flag is on, the process proceeds to step S111. If the hooking flag is off in step S201, the process proceeds to step S202. If the hooking flag is on, the process proceeds to step S111.

  Even in the case where this hooking flag is provided, as in the first or second embodiment, in the MFP 1 having the call waiting function (registered trademark), when there is no telephone device capable of making a call, early circuit disconnection can be performed. When there is a telephone device capable of making a call, it is possible to make a call by switching the call destination without requiring a complicated operation.

  In the above embodiment, when the hooking key 15a is operated, the telephone device of the call destination is switched. However, by pressing the hook switch 28 for a short time (for example, within 0.3 seconds), The telephone device may be switched, or the operation of the hooking key 15a and the pressing operation of the hook switch 28 for a short time may be used in combination.

  Further, in each of the above embodiments, a rejection message is sent when the telephone key is turned off or the disconnection key 15b is operated when switching the telephone device of the call destination. Further, in the second embodiment, a call is being made with the first telephone device. Even when the line is disconnected in the above state, the refusal message is sent. However, the refusal message may be sent every time the line is disconnected.

  The change information determination means of the telephone device according to claim 1 corresponds to the processing of S107 of FIG. 2 and the processing of S201 of FIG. 3, and the initial value setting means of the telephone device of claim 3 corresponds to S101 of FIG. 2 corresponds to the processing of S105 of FIG. 2 as the addition / subtraction means of the telephone device of claim 3, and the processing of S101 of FIG. 3 corresponds to the initial value setting means of the telephone device of claim 4. The addition / subtraction means of the telephone device according to claim 4 corresponds to the processing of S105 in FIG. 3, the call discrimination means of the telephone device according to claim 6 corresponds to the processing of S115 of FIG. The process of S111 of FIGS. 2 and 3 corresponds to the inquiry means of the apparatus, and the process of S118 of FIGS. 2 and 3 corresponds to the output means of the telephone apparatus according to claim 8.

It is a block diagram showing an electrical configuration of an MFP (master unit) and a slave unit. 6 is a flowchart showing call monitoring processing executed by the CPU of the MFP. 10 is a flowchart showing call monitoring processing executed by the CPU of the MFP according to the second embodiment. FIG. 3 is a diagram schematically showing a connection state between an MFP and an external telephone device.

Explanation of symbols

1 MFP (multifunctional peripheral device, part of telephone device)
2 cordless handset (part of telephone device)
11 CPU (first control means, second control means, third control means, part of detection means)
12a Reject message storage area (part of output means)
13a Hooking counter (storage means)
15a Hooking key (operation means)
15b Reject or disconnect key 22 NCU (part of detection means)

Claims (8)

In a telephone device configured to be able to receive an interrupt incoming request from a second terminal device via a communication line during a call with the first terminal device via a communication line,
Detecting means for detecting whether an interrupt incoming request from the second terminal device has been received during a call with the first terminal device;
The call destination is switched from the first terminal device to the second terminal device or from the second terminal device to the first terminal device in a state where the detection means detects reception of the interrupt incoming request from the second terminal device. Operation means operated in case,
Storage means for storing change information that changes every time the operating means is operated to switch the call destination to the first terminal device or the second terminal device;
Change information determination means for determining a value of change information stored in the storage means when a call disconnection request is made by an operator;
When the change information determining means determines that the change information is the first value, the call through the communication line is disconnected and the change information determining means determines that the change information is the first value. A telephone apparatus comprising: first control means for performing control to continue a call through the communication line when it is determined that the second value is different.   The first control means performs control for disconnecting the call via the communication line if the detection means does not detect reception of the interrupt incoming call request when the operator makes a call disconnect request. The telephone device according to claim 1, wherein the telephone device is performed. An initial value setting means for setting change information stored in the storage means to an initial value when a call with the first terminal device is started;
An addition / subtraction means for adding or subtracting 1 to the change information stored in the storage means each time the operation means is operated to switch the call destination to the first terminal device or the second terminal device;
The change information discriminating means discriminates the case where the value changed from the initial value of the change information stored in the storage means is an even number as the first value and the change information stored in the storage means When the value changed from the initial value is an odd number is determined as the second value,
The first control unit disconnects the call through the communication line when the change information determination unit determines that the value changed from the initial value of the change information stored in the storage unit is an even number. In addition, when the change information determination unit determines that the value changed from the initial value of the change information stored in the storage unit is an odd number, control is performed to switch the call destination to the first terminal device. The telephone device according to claim 1 or 2, wherein An initial value setting means for setting change information stored in the storage means to an initial value when a call with the first terminal device is started;
An addition / subtraction means for adding or subtracting 1 to the change information stored in the storage means each time the operation means is operated to switch the call destination to the first terminal device or the second terminal device;
The change information discriminating means discriminates the case where the value of the change information stored in the storage means is an initial value as the first value, and the value of the change information stored in the storage means is the initial value A case where the value has changed from the value is determined as the second value;
The first control unit disconnects the call through the communication line when the change information determination unit determines that the value of the change information stored in the storage unit is an initial value, and 2. The control for switching a terminal device of a call destination when the change information determination means determines that the value of the change information stored in the storage means has changed from an initial value. Or the telephone apparatus of 2. A first setting means for setting change information stored in the storage means to the first value when a call with the first terminal device is started;
When the operation means is operated and the call destination is switched to the first terminal device, the change information stored in the storage means is set to the first value, and the operation means is operated to change the call destination. A second setting unit that sets the change information stored in the storage unit to the second value when switched to the second terminal device;
The first control unit disconnects the call through the communication line when the change information stored in the storage unit is determined to be the first value by the change information determination unit. The control for switching the call destination to the first terminal device is performed when the change information determination means determines that the change information stored in the storage means is the second value. Item 3. The telephone device according to item 1 or 2. When the change information determination means determines that the value of the change information stored in the storage means is the second value, and the first control means performs control to switch the terminal device of the call destination Call determining means for determining whether or not the switchable terminal device is capable of making a call via a communication line;
When the call discrimination means determines that the call is not possible, the call is cut off via the communication line, and when the call discrimination means determines that the call is possible, the call destination terminal device is switched. The telephone device according to claim 3, further comprising: a second control unit that performs the following. If the change information determining means determines that the value of the change information stored in the storage means is the second value, the call destination terminal apparatus is controlled before performing control to switch the call destination terminal apparatus. Inquiry means for inquiring whether or not to switch,
Control is performed to disconnect the call through the communication line when the inquiry result by the inquiry means does not switch, and to switch the terminal device of the call destination when the inquiry result by the inquiry means switches. The telephone device according to claim 3, further comprising third control means for performing the operation.   When disconnecting a call with the first or second terminal device, an output means is provided for outputting a rejection message indicating that the call cannot be made to the first or second terminal device that disconnects the call. The telephone device according to any one of claims 1 to 7, wherein

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