JP4396291B2 - Exchange system - Google Patents

Description

The present invention relates to an exchange system that performs an exchange operation between an outside line and an extension line and between extensions.

  One function of a private branch exchange is called call pickup. Call pickup is defined as an incoming call group with multiple extension telephones as one group, and when there is an incoming call in the incoming call group, all the extension telephones in that incoming call ring, and any telephone belonging to that group can answer. Is.

  Multiple extension telephones have their own extension numbers, but when the call pickup function is used, the extension group corresponding to the representative telephone number is registered in the private branch exchange, and the caller enters the extension group. By making a call, if there is even one person using an extension telephone belonging to the group, it can be received. Accordingly, the other party's extension telephone is ringing due to talking or when the other party is absent, so that no one will come out.

  This call pickup function can be picked up (connected) by dialing a predetermined call pickup response special number and extension group when another call group is called, but means for displaying the extension group number Therefore, it is unknown which incoming call group is receiving, and the operation is complicated.

  To solve this problem, there is an exchange system disclosed in (Patent Document 1).

This exchange system is provided with function keys for answering assigned to each group that can be picked up by an extension telephone and an incoming call indicator lamp corresponding to the key. When there is an incoming call from another group, the incoming call indicator lamp corresponding to that group is turned on and turned on. It can be picked up by pressing the function key corresponding to the incoming call indicator lamp.
Japanese Patent Laid-Open No. 03-49344

  However, in the exchange system described in (Patent Document 1), there is no distinction as a role for each extension number of the extension telephones belonging to the incoming call group. For example, if an extension telephone is installed in a place where there is a one-to-many relationship, such as a president in the president's office, a secretary in a neighboring room, a manager in a private room and a subordinate in a large room, When an incoming call is received for an incoming call group, all the extension telephones in the incoming call group ring and can receive the incoming call, so even if the president or general manager is absent, the extension telephone set at the desk of the secretary or subordinate is ringing. Then, you will be able to receive the incoming call.

  However, when an incoming call is sent to the extension number assigned to the extension phone of the president or general manager, only the extension telephone installed on the desk of the president or general manager rings, so if the president or general manager is absent, The secretary and his / her subordinates are not aware of the incoming call, and there is a problem that no one receives the incoming call.

In addition, if you want to transfer a call that has arrived at the president or general manager to a secretary or someone at your subordinate, first press the transfer button on the extension telephone to place the call on hold, and then the individual extension of the secretary or subordinate The extension number assigned to was dialed and transferred. Therefore, if the secretary or subordinate who is the transfer destination is absent or busy, cancel the transfer, enter the call state, and then press the transfer button again. And other subordinates had to be searched, and the operation was complicated.

  Accordingly, the present invention provides a highly convenient premises that can receive and transfer calls without complicated operations when a plurality of extension telephones belonging to a group are installed in a use place having a one-to-many relationship. An object is to provide an exchange and an exchange system.

The exchange system of the present invention is an exchange system using a private branch exchange and a plurality of extension telephones. The private branch exchange is assigned as a parent, a line communication means for connecting to an external line, an extension communication means for connecting to an extension, and a parent. Storage means for storing group information storage means for grouping and storing the parent number of the extension telephone and the child number of at least one extension telephone assigned as a child into one group number, and call control for controlling the switching operation Control means for controlling the exchange operation of the private branch exchange and the operation of each of the extension telephones, and means for notifying the state of the telephone call of each extension telephone to the respective extension telephones. The extension telephone has a communication unit connected to the private branch exchange, a function button for requesting a function from the private branch exchange, and an instruction from the private branch exchange. An operation unit having a state informing unit for informing the state of the talk, and the group information storage unit further groups the group state representing the state of the group number and the parent extension state of the parent number belonging to the group number. If the call control means determines that the incoming call is directed to the parent number when there is an incoming call to the private branch exchange, the call control means sets the group status table stored in correspondence with the number to the group status in the group status table. The incoming call status is stored, and the status notification means sends the incoming call of the parent number and the incoming call of the child number to each extension telephone belonging to the group number based on the group status, and the status notification means of each extension telephone receives the incoming call It is characterized in that an incoming call display indicating the inside is notified .

  As described above, the private branch exchange of the present invention groups extension numbers assigned to extensions into a group number assigned with one extension, and sets the extension number belonging to the group number as a parent number that is one parent extension. When there is an incoming call to the parent extension of the parent number by controlling the parent extension of the parent number and the extension of the group number to be the same exchange operation by dividing it into one or more child extensions. However, since the exchange operation is performed as an incoming call of the extension of the group number, the extension telephones connected to all the extensions belonging to the group number ring, so even if there is no parent extension user, the extension of the child extension is used. Therefore, it is possible to provide a private branch exchange with high convenience.

  The extension numbers assigned to the extension are grouped into a group number assigned with one extension, and the extension number belonging to the group number is a parent number that is one parent extension and a child number that is one or more child extensions. The transfer and call requested from the parent extension is controlled so that all child extensions belonging to the child group are simultaneously exchanged and requested from any child extension belonging to the child group. By controlling the transfer / call to be exchanged to the parent extension, the transfer / call from the parent extension is transferred to the child group, and the transfer / call from the child group is uniquely transferred to the parent extension. Since it can be determined, it can be transferred and called without complicated operations. In addition, since the transfer and call from the parent extension to the child group are performed for the extension telephones of all the child extensions belonging to the child group, it is less likely that transfer or call cannot be performed while the phone is absent or busy.

The first invention made to solve the above-mentioned problem is to manage the extension assigned to at least two extension telephones as a group in association with each other, and cope with the group number assigned to the group and the extension associated with the group. The extension means connected to the extension has a storage means capable of registering the extension number to be registered and an indication corresponding to the state of the call transition for all the extensions belonging to the group when the state transition is made. A private branch exchange having status notification means for displaying means, function button detecting means for detecting an operation of a button of an extension telephone associated with the display means, and call control means for controlling a call to a group. The storage means has one parent number assigned as an extension associated with the group number as a parent extension, and It is possible to divide and register one or more child numbers assigned as extensions, and the call control means can control the parent extension of the parent number and the extension belonging to the group number to perform the same exchange operation, The notifying means has a function of notifying extension telephones connected to all the extensions belonging to the group number of the call status of the extension belonging to the group number and the parent extension of the parent number, The extension numbers assigned to the extensions are grouped into group numbers, and the extension numbers belonging to the group numbers are divided into a parent number that is one parent extension and a child number that is one or more child extensions, and call control is performed. The means controls the parent extension of the parent number and the group number to perform the same exchange operation, so that even if there is an incoming call to the parent extension of the parent number, the exchange operation is performed as an incoming group number. Therefore, extension telephone connected to any extension belonging to the group number is ringing.

  In a second invention made to solve the above problem, when the call control means determines that there is an incoming call addressed to the parent number, the extension belonging to the group number is set as the destination and all extensions belonging to the group number are transferred. The incoming call is notified to the status notification means, and the status notification means notifies the extension telephone connected to all the extensions belonging to the group number of the information indicating the incoming call. If there is an incoming call, the call control means causes the extension telephone connected to all the extensions of the group to receive the call, and the status notification means indicates that the incoming call is an extension telephone connected to all the extensions belonging to the group number. To notify.

  According to a third aspect of the present invention for solving the above-mentioned problem, the call control means has a function of notifying the status notification means when it is determined that the parent extension is busy, and the status notification means belongs to the parent number. It is characterized by notifying all extension telephones connected to the extension of the group number of information indicating that the parent extension is busy, and when the parent extension is busy, the status notification means The extension telephone connected to all the extensions belonging to the group number is notified that the parent extension is busy.

  A fourth invention made to solve the above problem is that the call control means has a function of notifying the status notification means when the parent extension is determined to be on hold, and the status notification means is a group to which the parent number belongs. The information indicating that the parent extension is on hold is notified to all the extension telephones connected to the extension belonging to the number. When the parent extension is on hold, the status notification means Notify extension telephones connected to all extensions in the group that the extension is on hold.

  A fifth invention made to solve the above-mentioned problem has a function of notifying the status notification means when the call control means judges that an incoming call addressed to the parent number has been put on hold in response to one child extension. The status notification means notifies the extension telephone connected to all the extensions belonging to the group number of information indicating that the incoming call addressed to the parent number is on hold. When an incoming call addressed to a number is put on hold by one child extension, the status notification means notifies the extension telephones connected to all the extensions belonging to the group number that the incoming call addressed to the parent number is on hold. .

According to a sixth aspect of the invention for solving the above-described problem, the function button detecting means is a button for requesting to hold a call assigned to a function button of an extension telephone connected to any extension belonging to the group number. If a press is detected, the call control means notifies the call control means, and the call control means sets the extension belonging to the group number to the hold destination and notifies the status notification means. An extension telephone connected to the extension of the group number is characterized by notifying the extension telephones connected to all the extensions belonging to the number of information indicating that the extension belonging to the group number is on hold. When the button control means detects that the button for requesting call hold is pressed, the call control means holds the call and the status notification means indicates that the group number is on hold. And the extension telephone connected to all of the extension of the incoming call group number, and notifies.

  The seventh invention made to solve the above problem is that the function button detecting means assigns the function button of the extension telephone connected to the extension belonging to the group number when there is a hold on the extension belonging to the group number. When the pressing of the button requesting the release of the hold is detected, the call control unit is notified of this, and the call control unit releases the hold of the extension belonging to the group number and the extension that requested the release of the hold Pressing the “button to request release of hold” on the extension telephone connected to the extension of the group number that is set as the hold destination has a function that enables the extension connected to the telephone to talk. Is detected by the button control means, the call control means releases the hold and enables the extension connected to the extension telephone that requested the release of the hold.

  The eighth invention made to solve the above problem is to manage the extension numbers assigned to at least two extensions as a group by associating with each other, and cope with the group number assigned to the group and the extension associated with the group. The extension means connected to the extension has a storage means capable of registering the extension number to be registered and an indication corresponding to the state of the call transition for all the extensions belonging to the group when the state transition is made. A private branch exchange system having a state notification means for displaying means and a function button detecting means for detecting an operation of an extension telephone button associated with the display means, and having a call control means capable of controlling a call to a group And the storage means assigns an extension associated with the group number as one parent number. Can be divided and registered into child groups that are one or more child numbers assigned as child extensions, and the call control means is requested by the parent extension to transfer or call all children belonging to the child group. Control is performed so that the extension operation is simultaneously performed to the extension, and the transfer or call requested from any child extension belonging to the child group is controlled so as to perform the replacement operation to the parent extension. The extension number belonging to the number is divided into one parent number assigned as a parent extension and one or more child numbers assigned as child extensions and registered in the storage means, and requested from the parent extension. The call control means controls the transfer and call so that all the child extensions belonging to the child group are simultaneously switched, and the transfer requested by any of the child extensions belonging to the child group. Or call, to control so that the exchange operation to the parent extension.

  According to a ninth aspect of the present invention for solving the above-mentioned problem, the function button detecting means is configured to press a button for requesting a transfer assigned to a function button of an extension telephone connected to the parent extension while the main extension is busy. If detected, the call control means is notified, and the call control means has a function to call the call of the parent extension to all the child extensions of the group number to which the parent extension belongs, with the extension belonging to the group number as a holding destination. When the button control unit detects that the "extension request button" assigned to the function button of the extension telephone connected to the parent extension is pressed during a call, the call control is performed. The means puts the call of the parent extension on hold and makes the incoming call to the child extension of the group number to which the parent extension belongs.

  According to a tenth aspect of the present invention for solving the above-mentioned problems, the function button detection means presses a button for requesting transfer assigned to a function button of an extension telephone connected to the extension while the extension is busy. Is detected, and the call control means has a function of receiving a call of a sub-extension with the extension belonging to the group number as a holding destination and receiving the parent extension of the group number to which the sub-extension belongs. If the button control means detects that the extension telephone connected to the extension is pressed and the button control means detects that the extension is connected, the call control means Is put on hold and the incoming call is sent to the parent extension of the group number to which the child extension belongs.

  According to an eleventh aspect of the present invention, in order to solve the above problem, when the function button detecting means detects pressing of a button for requesting a call assigned to a function button of an extension telephone connected to a parent extension, call control is performed. The call control means calls the extension telephones connected to all the child extensions of the group number to which the parent extension belongs, and calls the extension telephone connected to the parent extension. When the button control means detects that the button requesting "is requested", the call control means calls the extension telephones connected to all the child extensions of the group number to which the parent extension belongs.

  According to a twelfth aspect of the present invention, in order to solve the above problem, when the function button detecting means detects pressing of a button requesting a call assigned to a function button of an extension telephone connected to a child extension, call control is performed. The call control means is characterized in that the extension telephone connected to the parent extension of the group number to which the child extension belongs is called, and the call request of the extension telephone connected to the child extension is requested. When the button control means detects that the button is pressed, the call control means calls the extension telephone connected to the parent extension of the group number to which the child extension belongs.

  A thirteenth invention made to solve the above problems is an exchange system comprising a plurality of extension telephones connected to the private branch exchange according to any one of the first to twelfth inventions. The extension telephone is characterized by comprising function buttons for requesting hold, transfer, and calling to the private branch exchange, and display means for displaying the state of the call notified from the private branch exchange. The telephone has a function button for requesting hold, transfer and call to the private branch exchange, and a display means for displaying the state of the call notified from the private branch exchange, so that the function button can be simply pressed to the private branch exchange. Therefore, it is possible to notify various operation details and display the call status notified from the private branch exchange on the display means. Rukoto can.

(Embodiment)
A private branch exchange and an exchange system according to an embodiment of the present invention will be described with reference to the drawings.

  First, the configuration of the private branch exchange according to the embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a configuration diagram of an exchange system according to an embodiment of the present invention. FIG. 2 is a configuration diagram of the private branch exchange according to the embodiment of the present invention. FIG. 3 is a diagram illustrating the configuration of the group configuration information table. FIG. 4 is a diagram for explaining the configuration of extension function button information.

  As shown in FIG. 1, the exchange system 1 includes a private branch exchange 2 and a plurality of extension telephones 3 connected to the private branch exchange 2.

  The private branch exchange 2 performs an exchange operation of connection between the external line 4 connected to a general public network such as a subscriber telephone network and an ISDN (Integrated Services Digital Network) line or a dedicated line and a plurality of extensions 5. Also, the exchange operation between the extension lines 5 is performed. In FIG. 1, only one external line 4 connected to a general public network or a dedicated line is shown for convenience, but several to several thousands can be provided depending on the scale of the exchange system. Further, although only three extension lines 5 are illustrated, it is sufficient that at least two extension lines are provided, but it is possible to provide thousands of extension lines. Each extension 5 is connected to an extension telephone 3 and installed on a desk used by each department.

  The private branch exchange 2 performs exchange operations such as line communication means 10 that is means for connecting the external line 4, extension communication means 11 that is means for connecting the extension line 5, switching between the external line 4 and the extension line 5, and switching between the extension lines 5. And control means 12 for controlling the extension telephone 3 and storage means 13 for storing an extension number of the extension telephone 3 and the like.

  The line communication means 10 is equipped with a function for detecting an incoming call from the external line 4 and a circuit that satisfies the electrical specifications for connection with the external line 4.

  In order to connect to the extension 5, the extension communication means 11 is equipped with a circuit that satisfies the electrical specifications, and transmits and receives voice and data to and from the extension telephone 3 connected via the extension 5. The extension communication means 11 is connected to the extension telephone 3 with a four-core cable as the extension 5, and communicates in a HDB (High Level Data Link Control) procedure with a 2B + D frame configuration.

  The control unit 12 includes a call control unit 15 that performs exchange operations such as incoming call, hold, transfer, and call, and function button press information detection that is a function button detection unit that detects a press from a function button provided on the extension telephone 3. It comprises means 16 and state notifying means 17 for notifying the user of the status of incoming call, hold, etc. provided to the extension telephone 3 by lighting or flashing a lamp or the like to the user.

  The call control means 15 performs exchange operations such as incoming call, hold, transfer, call, etc. of a call from the external line 4 to the internal line 5, a call from the internal line 5 to the external line 4, and a call between the internal lines 5. By receiving the incoming call detection from the line communication means 10 to each extension 5, the voice data converted from analog to digital by the line communication means 10 is transmitted to other extension communication means 11 in time division with other calls. The exchange operation is performed. The call control means 15 stores the extension number setting from the input means (not shown) provided in the private branch exchange 2 in the storage means 13 or the display means (not shown) provided in the private branch exchange 2. Display the setting contents.

  As will be described later, the call control means 15 classifies the extension number as a parent number of one parent extension and a child number of a plurality of child extensions, groups these extension numbers and assigns a group number, and sets the parent extension and group. Control is performed so that the exchange operation is the same as the number. In addition, when multiple child extensions are grouped as child groups, transfer and call requests from the parent extension are controlled so that all child extensions belonging to the child group are simultaneously exchanged. Transfers and calls requested from one of the child extensions are controlled so as to switch to the parent extension.

  The status notification means 17 receives the status of each call of each extension 3 from the call control means 15 and notifies the extension telephone 3 connected to the extension 5 via the extension communication means 11 of the information indicating the status. . For example, when a certain extension 5 is in the hold state, a code indicating the hold is sent as information, and when it is in the incoming state, a code indicating the call is sent as information via the extension communication means 11.

  When the function button press information detecting means 16 detects the notification of the information that the function button is pressed from the extension telephone 3 via the extension communication means 11, the function button press information detecting means 16 registers in advance in the storage means 13 from the information of the pressed function button. The function of the selected function button is searched and notified to the call control means 15.

  The storage unit 13 includes a group information storage unit 21 and an extension function button information storage unit 22. The group information storage means 21 stores each number of the extension connected to the private branch exchange 2.

  Here, details of the group information storage unit 21 of the storage unit 13 will be described with reference to FIG. The group configuration information table shown in FIG. 3 is stored in the group information storage means 21, and includes a group number, a group name, a group number, a parent number, a child group number 1 and a child number 2. -It consists of a child n number.

  The group number is obtained by grouping the extension telephones 3 connected to the private branch exchange 2 from the first group to the m-th group, for example, by affiliation, and indicates that there are 1 to m groups. As the group name, the names of the first to m-th groups can be arbitrarily given. By providing a group name, when an extension telephone number setting change occurs, the affiliation of the extension telephone number that needs to be changed can be easily identified from the group name instead of the group number, so the extension number of the private branch exchange 2 can be set. The operability of the maintenance person who performs is improved.

  The group number is an extension number used when it is desired to make a call with any extension belonging to the group number. The call control means 15 controls the incoming calls addressed to the group number assigned by grouping the extension numbers so as to be received by all the extensions of the extension telephone numbers belonging to the group number, and calls with the extensions belonging to the group number. Is possible.

  The extension numbers belonging to the group number are registered by dividing one parent number as a parent extension and child numbers that are child groups 1 to n as child extensions. In this way, when the incoming call is transferred to the extension of any of the child numbers belonging to the child group by dividing the child 1 number to the child n number as the child group and distinguishing from the parent number, the call control means 15 It is possible to transfer to the parent number without any special operation, and when an incoming call is transferred to the extension of the parent number, the extension telephones connected to all the child extensions belonging to the child group are ringed. Can be received.

  Even if a call request is issued from any extension belonging to a child group, the call control means 15 makes a special operation by dividing the child 1 number to the child n number into child groups and distinguishing them from the parent numbers. It is possible to call the extension of the parent number without using it. Further, when the extension of the parent number calls, the call control means 15 can be called by ringing all the child extensions belonging to the child group.

  The extension function button information storage means 22 stores a table that defines the function button functions provided in the extension telephone 3. Here, details of the extension function button information stored in the extension function button information storage means 22 will be described with reference to FIG.

  The extension function button information stored in the extension function button information storage means 22 shown in FIG. 4 stores extension function button information corresponding to the function buttons of each extension telephone 3 connected to the extension 5. For example, in the extension telephone 3 with the extension number 1, “group call button for group 1” is assigned to the button numbers 1 and 2, and “group function button for group 1” is assigned to the function button 3. Further, the extension telephone with the extension number 2 is assigned the “external line button for the line interface 1” to the function button 1.

  The function of the function button 41 (see FIG. 5) to which the “group 1 group call button” is assigned is the function button of the button number 1 in the extension telephone 3 that is talking to the extension addressed to the group number of the group 1. By pressing 41, the call can be put on hold. If the function button 41 is pressed again, the hold is released and the call can be resumed. Further, the function button 41 is pressed to hold the call, and the function button 41 with the button number 2 for which the same function is defined is pressed, so that the call is held with the function button 41 with the button number 1. It is possible to make a call with another outside line or extension at the same time.

The “external line button for line interface 1” assigned to the function button 41 of the button number 1 of the extension number 2 is an extension line when the extension telephone 3 connected to the extension assigned to the extension number 2 receives an incoming call of the outside line. By pressing the function button 41 of the button number 2 of the extension telephone 3 of the number 2, the call can be put on hold. Then, by pressing the “external line button for line interface 2” of the function button 41 of the button number 2, an incoming call from another external line and a call can be made.

  The “group function button for group 1” assigned to the function button 41 of button number 3 of the extension telephone having the extension number 1 is a function button associated with the group. By pressing this function button, the group number is displayed. It is possible to perform an incoming call response, hold, transfer, call, etc. with respect to an extension belonging to the. This function will be described in detail in the description of the operation of the exchange system according to the embodiment of the present invention described later.

  The call control means 15 is realized by referring to the definition table of the extension function button information storage means 22 from the notification of the function button notified from the extension telephone 3 and executing a program corresponding to the notified function button. ing.

  As shown in FIG. 2, the private branch exchange 2 configured as described above is realized by a control means 12 including a CPU (Central Processing Unit) 25 and a switch 26 for switching the connection of a call between each external line and an internal line. Is possible. The CPU 25 can be realized by an MPU (Micro Processing Unit) such as a microprocessor for executing instructions, a ROM (Read Only Memory) storing a control program, and a RAM (Random Access Memory) used for reading and writing by the program. Is possible.

The storage means 13 is an SRAM (Static) used as a memory 27 for temporary storage of data.
Random Access Memory (DRAM) and DRAM (Dynamic Random Access Memory) can be used, and the extension number and the like can be configured by a battery backup memory which is a nonvolatile memory, a flash memory, or the like. The extension communication unit 11 can be configured as a gate array as the extension interface unit 28. Similarly, the external line interface unit 29 as the extension communication unit 10 can be configured as a gate array.

  Next, the configuration of the extension telephone of the exchange system according to the embodiment of the present invention will be described based on FIG. 5 and FIG. FIG. 5 is a diagram showing a configuration of an extension telephone used in the exchange system according to the embodiment of the present invention. FIG. 6 shows an external view of the extension telephone according to the embodiment of the present invention.

  As shown in FIG. 5, the extension telephone 3 includes a control unit 30, a display unit 31, a speaker 32, a microphone 33, a dial button 34, a hook key 35, an operation unit 36, and a function button press detection unit 38. And a function button pressing information transmitting unit 37 and a communication unit 40.

  The control unit 30 controls the extension telephone 3 as a whole, notifies the private branch exchange 2 of the telephone number input by the dial button 34 or the operation unit 36, displays the input number on the display unit 31, and sets the communication unit 40. And data and voice communication with the private branch exchange 2.

  The display unit 31 can use a character type or graphics type liquid crystal panel display (LCD). The display unit 31 displays based on display data from the control unit 30. The speaker 32 is provided in the handset that is put on the user's ear or the main body of the extension telephone 3, and can be heard as sound from the speaker 32 by the control unit 30 converting a digital signal, which is audio data, into an analog signal. . The microphone 33 is provided in the main body of the extension telephone so that the user can speak with the handset to be put on the mouth and the handset placed on the main body of the extension telephone.

The dial button 34 includes numeric keys and symbol keys, and is a means for inputting a telephone number. The hook key 35 is a key for notifying whether or not the handset has been picked up, and there are two types of on-hook and off-hook. The on-hook state indicates a state in which a telephone call is not possible with the handset being placed, and the off-hook state indicates a state in which the handset is removed from the main body, and a telephone call is possible. The hook key 35 notifies the control unit 30 of which state it is in. The operation unit 36 includes function buttons 41 and state notification means 42. The function buttons 41 are buttons for requesting the private branch exchange 2 to hold, transfer, call, etc. By providing a plurality of function buttons 41, the extension telephone 3 can be provided with a plurality of types of functions.

  The state notification means 42 can use two-color lamps such as red and green LEDs (light-emitting diodes). The private branch exchange 2 instructs the state notification means 42 to turn on / flash indicating the state of the call via the control unit 30. The status of the extension telephone 3 can be notified to the user by the lighting / flashing / color difference of the status notification means 42. The state notification means 42 is formed integrally with the function button 41. When the function button 41 is associated with a grouped group number, the lighting / flashing of the state notification means 42 and the difference in color means the state of the telephone call of the extension of the group number.

  The function button press detection unit 38 detects that the function button 41 has been pressed and notifies the function button press information transmission unit 37. The function button pressing information transmitting unit 37 notifies the private branch exchange 2 via the communication unit 40 of which function button 41 is pressed and a code defined for each function button 41. The communication unit 40 is connected to the extension interface unit 28 of the private branch exchange 2 via a telephone line, and performs transmission and reception of voice and data in a 2B + D frame configuration according to an HDLC (High Level Data Link Control) procedure.

  FIG. 6 shows an external view of the extension telephone according to the embodiment of the present invention. The extension telephone 3 includes a main body 43 and a receiver 44 used by a user for a call. The main body 43 has a display unit 31, an operation unit 36, and a dial button 34 on the right side. The function buttons 41 of the operation unit 36 are arranged in a matrix form in three vertical rows and three horizontal rows, and a state notification means 42 using LEDs is provided at the left end of each function button 41. By turning on or blinking this state notification means 42, it is possible to determine the state of a group in which a function is defined or the call by the extension function button information.

  The operation of the exchange system according to the embodiment of the present invention constituted by the private branch exchange 2 to which the extension telephone 3 is connected will be described with reference to FIGS. FIG. 7 is a flowchart for explaining the state of lighting / flashing of the state notification means. FIG. 8 is a flowchart for explaining a control method when the call control means receives an extension. FIG. 9 is a flowchart for explaining a control method when the call control means receives an extension of a group number. FIG. 10 is a flowchart for explaining a method for controlling the call control means to hold a group number extension. FIG. 11 is a flowchart for explaining a control method of state management of the extension by the call control means. FIG. 12 is a flowchart for explaining the control by the group function button assigned to the function button of the extension telephone. 13 to 23 are diagrams for explaining the operation of the exchange system according to the embodiment of the present invention. FIG. 24 shows the structure of the group status table stored in the storage control means. FIG. 25 is a diagram showing the structure of the group hold management table stored in the storage control means 13.

First, the operation of the state notifying unit 17 of the private branch exchange 2 instructing to turn on / flash the state notifying unit 42 of the extension telephone 3 will be described with reference to FIG. When there is an incoming call, the call control means 15 determines whether the incoming call is directed to the group number (S101). If it is determined that it is addressed to the group number, the extension number belonging to the group number is read from the group information storage means 21 and notified to the status notification means 17. The status notification means 17 notifies the extension telephones 3 connected to all the extensions belonging to the group number of “early green flashing” indicating that an incoming call has been received. This is because the notification from the status notification means 17 is transmitted to the extension telephone 3 via the extension communication means 11 and is notified to the status notification means 42 via the communication unit 40 of the extension telephone 3 so as to quickly flash green ( For example, 4 times / second) (S102).

  The notification from the status notifying unit 17 of the private branch exchange 2 to the status notifying unit 42 of the extension telephone 3 is performed in this way, and the status of the call such as transfer or hold can be changed only by changing the notified content. Can be easily notified. If the call control means 15 determines in S101 that it is not addressed to the group number, it is determined whether or not the transfer is from a parent extension to a child extension (S103).

  In the case of transfer from the parent extension to the child extension, the status notification means 17 notifies the extension telephones 3 of all the child groups belonging to the group number of “early red flashing” indicating the incoming call by transfer. By this notification, the state notification means 42 quickly flashes red (for example, 4 times / second) (S104).

  If the call control means 15 determines in S103 that the call is not transferred from the parent extension to the child extension, it is determined whether the call addressed to the parent extension is on hold (S105). If the extension is on hold, it is determined whether the extension telephone 3 placed on hold is a parent extension or a child extension (S106). If it is determined in S106 that the extension that has been put on hold is a parent extension, the status notifying means 17 holds all extension telephones 3 belonging to the group number by the extension telephone 3 connected to the parent extension. Notification of “slow green blinking” is performed. By this notification, the state notification means 42 is slowly blinking green (for example, twice / second) (S107).

  If it is determined in S106 that the extension that has been put on hold by the call control means 15 is a child extension, the status notifying means 17 holds all the extension telephones belonging to the group number by the extension telephone 3 connected to the child extension. Notification of “slow red flashing” is performed. By this notification, the state notification means 42 is slowly flashing red (for example, twice / second) (S108).

  If the call control means 15 determines in S105 that the call addressed to the parent extension is not on hold, it determines whether the parent extension is in use (S109). If the parent extension is in use, the status notification means 17 determines whether the extension telephone to be notified is an extension telephone connected to the parent extension or an extension telephone connected to the child extension (S110). As a result of this determination, the status notification means 17 notifies the extension telephone connected to the parent extension of green lighting indicating busy (during a call) (S111), and the extension telephone connected to the child extension is notified to the parent telephone. A red light indicating that the telephone is busy (busy) is notified (S112).

  If the call control means 15 determines in S109 that the parent extension is not in use, it indicates that all the extensions belonging to the group number are not on hold, transfer, or in call, and the status notification means 17 performs the notification operation. Therefore, the state notification means 42 of all the extension telephones 3 in the group is turned off (S113).

  Next, a control method when the call control means 15 receives a call to an extension will be described with reference to FIG. First, when it is detected that an incoming call has occurred on any of the connected extensions 5 (S120), the call control means 15 determines whether the incoming call is addressed to a group number (S121).

  When the call control means 15 determines in S121 that the incoming call has occurred on the extension assigned to the group number, the exchange operation is performed so that the incoming call is made to all the extension telephones 3 belonging to the group in the same way as an incoming call not via the group (S122). If it is determined in S121 that the call control means 15 is not an incoming call generated on the extension assigned to the group number, it is determined whether or not the destination is a parent number that is a parent extension (S123).

In S123, if the call control means 15 determines that the incoming call is a child extension, that is, if the incoming call is an incoming call addressed to one of the child numbers included in the child group, it is the same as the incoming call not via the group Then, an exchange operation is performed so as to receive the incoming call to the extension telephone 3 assigned to the child number (S124). Similar S123, call control unit 15 is called when it is determined that the parent extension, to change the incoming call to the group call in the parent extension (S125). Then, the call control means 15 reads the extension number belonging to the group number from the group information storage means 21, and performs an exchange operation so that the extension telephone 3 connected to all the extensions belonging to the group number is received (S126).

  Next, details of the control method when the call control means 15 receives an incoming call addressed to a group number will be described in detail with reference to FIGS. First, the structure of the group status table will be described with reference to FIG. The group status table is stored in the group information storage means 21 and is configured corresponding to the group number in the group configuration information table. This group status table stores a group status indicating the status of each group number and a parent extension status indicating the status of the parent extension belonging to the group number.

  “Waiting” shown in the group status or parent extension status in the group configuration information table indicates that the incoming call is available in the idle status. “On hold” indicates a state where a call is on hold. “Incoming call” indicates a state in which a call is received and a call is not started because it is not off-hook. “In use” indicates an off-hook state such as during a call, and “Transfer” indicates a state in which a transfer operation is being performed from a call to another extension or external line. Thus, the group configuration information table is used for the call control means 15 to manage the group status indicating the current status of each group number and the current status of the parent extension belonging to the group number.

  As shown in FIG. 9, when detecting the arrival of a call addressed to a group number (S130), the call control means 15 changes the group status in the group status table for the received group number to “incoming” (S131). Next, the incoming call is changed to all the extensions belonging to the group number, and all the extension telephones 3 belonging to the group are caused to ring as an incoming call state, and the parent extension state is set to “incoming call” (S132). Thus, the call control means 15 manages the state of the parent extension of each group number and parent number.

  Next, a control method when the call control means 15 puts a call on an extension belonging to a group number will be described with reference to FIGS. First, the structure of the group hold management table will be described with reference to FIG.

  The group hold management table is stored in the group information storage means 21 and is configured corresponding to the group number in the group configuration information table. In the group hold management table, hold partner information indicating a call partner of a call on hold and hold person information indicating an extension number held are stored for each group number. This group hold management table has a table size that can be managed even if all extensions belonging to the group number are held at maximum.

  For example, in FIG. 25, in the group number “2”, the child 1 extension currently holds a call with the extension number 7 and in the group number “4”, the parent extension is one of the external lines. Indicates that the call is on hold. In this way, the group hold management table is used for the call control means 15 to manage the extension and call partner that are put on hold for each group number.

As shown in FIG. 10, when the call control means 15 puts the call call on hold by a hold request from the extension telephone 3 during a call (S140), the call call holds the incoming response call addressed to the parent number. It is determined whether or not (S141).

  In S141, when the call control unit 15 holds the incoming response call addressed to the parent number, the call control unit 15 sets the group status in the group status table (see FIG. 24) in order to set the group number as the hold destination. Change to “pending” (S142). Next, the call control means 15 stores in the group hold management table the hold partner information that is the call partner and the hold person information that is the extension number of the extension telephone 3 that has been put on hold (S143). Then, the call addressed to the parent number is put on hold with the group number as the hold destination (S144). If it is determined in S141 that the call control means 15 has held the incoming response call is not addressed to the parent number, it is determined whether or not the extension telephone 3 that has been put on hold is a parent extension (S145).

  In S145, if the extension telephone 3 on which the hold operation is performed is a parent extension, the process proceeds to S142, the group status in the group status table is set to “pending”, and the hold partner information that is the call partner is put on hold in S143. The hold information, which is the extension number of the extension to which the extension telephone 3 is connected, is stored in the group hold management table, and the group number is put on hold with the group number as the hold destination in S144.

  If the extension telephone 3 on which the hold operation is performed is a child extension in S145, it is determined whether or not the hold operation is performed by the “group call button” (S146). In the “group call button”, the function button 41 of the extension telephone 3 is defined by the extension function button information stored in the extension function button information storage means 22 of the private branch exchange 2 as described in FIG. Thus, it can function as a “group call button”. When the function button 41 to which the “group call button” is assigned is pressed on the extension telephone 3, the function button pressing information detecting means 16 of the private branch exchange 2 detects the pressing of the function button 41 and the call control means 15. To notify. The call control means 15 reads the function of the corresponding function button from the extension function button information stored in the extension function button information storage means 22. The call control unit 15 performs processing according to the function. In this case, since it is a “group call button”, the call control means 15 puts the extension under call on hold.

  That is, in S146, the holding of the call by the function button 41 assigned to the “group call button” of the extension telephone 3 is shifted to S142, and thereafter, similarly, the processing is performed in S143 and S144, and the group number is stored. As a holding state.

  In S146, if the call is not held by the “group call button”, the extension that is calling is a child extension, not a call that has arrived at the parent extension, and is not held by the “group call button”. And the extension of the child extension during the call is put on hold (S147).

  Thus, by determining whether the held call is an incoming call to the parent extension, a hold by the parent phone, or a hold by the “group call button”, the hold of the call is set as the hold by the group number. To do. Thereby, it is possible to release the hold from the extension to all belonging to the group number.

  Next, a control method in which the call control means 15 performs parent extension state management will be described with reference to FIGS. First, as shown in FIG. 11A, when the call control means 15 detects an off-hook from a waiting extension (S150), it is determined whether or not the off-hook extension is a parent extension (S151). . If the off-hook extension is a parent extension, the parent extension state of the group state table stored in the extension function button information storage means 22 is changed to “in use” (S152).

When the extension off-hooked in S151 is a child extension, and when the parent extension state of the group status table is changed to “in use” in S152, the call control means 15 sets the extension off-hook. A call from the telephone 3 is accepted (S153). As described above, when the corresponding parent extension state in the group state table is changed to “in use”, the call control unit 15 notifies the other extension of the state meaning “in use”.

  Next, as shown in FIG. 11B, when the call control means 15 detects an on-hook of the extension during a call (S155), it is determined whether or not the on-hook extension is a parent extension (S156). . If the on-hook extension is a parent extension, the parent extension state of the group state table stored in the storage means 22 is changed to “waiting” (S157).

  Then, when the extension on-hook in S156 is a child extension, and when the parent extension state in the state table is changed to “standby” in S157, the call control means 15 sets the extension telephone on-hook. The call from 3 is terminated (S158). As described above, when the corresponding parent extension state in the group state table is changed to “waiting”, the call control unit 15 notifies the other extension of the state meaning “standby”.

  Next, the control method of the control means 12 when the function button 41 of the extension telephone 3 defined as “group function button” in the extension function button information is pressed will be described with reference to FIG. The function button press information detecting means 16 of the control means 12 detects the press of the function button 41 of the extension telephone 3 and notifies the call control means 15 of the function button number. The call control means 15 retrieves the function of the corresponding button number from the extension telephone function button information table stored in the extension function button information storage means 22 of the storage means 13. Then, when the function of the corresponding button number is “group function button”, the control shown in FIG. 12 is performed.

  First, when the “group function button” is pressed (S160), the call control means 15 determines whether or not the extension to which the pressed extension telephone 3 is connected is in a call (S161). If it is determined in S161 that the call control means 15 is not busy, it is determined with reference to the group status table shown in FIG. 24 whether or not the group number to which the pressed extension telephone belongs is receiving (S162). .

  In S162, when it is determined that the group number is “incoming”, the call control means 15 performs an incoming call response exchange operation. That is, when the “group function button” of the extension telephone 3 that has been received and ringing is pressed, the mobile phone enters an off-hook state and can talk (S163). In S162, when the group number is not “receiving”, the call control means 15 refers to the parent extension state of the same group number and determines whether or not the parent extension state is “transferring” (S164). ).

  If the call control unit 15 determines in S164 that the parent extension state is “transferring”, the operation of the extension telephone 3 on which the “group function button” is pressed differs depending on whether the extension is a parent extension or a child extension. If it is a parent extension, it is a transfer from the parent extension to the child extension, so that it returns to the call state again, and if it is a child extension, a call can be made in response to an incoming call (S165). That is, when a “group function button” is pressed during transfer from a parent extension to a child extension belonging to a child group, the call can be retrieved at the parent extension, and a transfer response is made at the child extension.

If the parent extension state is not “transferring” in S164, the call control means 15 refers to the group state of the same group number and determines whether the group state is “pending” (S166). In S166, when the group state is “on hold”, the call control means 15 cancels the call in the hold state and enables the call. That is, a call held on the group number can be made available by releasing the call on hold from any extension telephone 3 belonging to the group number by pressing the “group function button” (S167). . If the group status is not “pending” in S166, the call control means 15 determines which of the extension telephone 3 whose “group function button” is pressed is connected to the parent extension or the child extension (S168). ).

  If it is a parent extension in S168, it is a call from a parent extension to a child group that is a child extension, so the call control means 15 refers to the group configuration information table stored in the group information storage means 21, and the parent extension is Call all child extensions of the child group with the group number to which it belongs. In other words, the extension belonging to the group number is divided into the parent number and the child group and registered in the group configuration information table, so it is only possible to press the “Group function button” without calling, holding or transferring. It is possible to make a call from the parent extension to the child extension (S169).

  In S168, if it is a child extension, it is a call from the child extension to the parent extension, so the call control means 15 refers to the group configuration information table stored in the group information storage means 21, and determines the group number to which the child extension belongs. Call the parent extension. In other words, by dividing the extension belonging to the group number into a parent number and a child group and registering them in the group configuration information table, with no call, hold or transfer, just press the “Group function button” It is possible to call from the child extension to the parent extension (S170).

  If the call is in progress at S161, the call control means 15 puts the call on hold (S171). Then, the call control means 15 determines whether or not the extension that has been put on hold is a parent extension (S172).

  In S172, when the extension that has been put on hold is not the parent extension, the call control means 15 transfers the call of the child extension to the parent extension. That is, when a “group function button” of the extension telephone 3 connected to the child extension is pressed during a call on the child extension, the call control means 15 displays the parent extension of the group number to which the child extension belongs from the group configuration table. A search is performed, and an exchange operation is performed to transfer a call in progress with the child extension to the parent extension. In this way, by dividing the extension belonging to the group number into a parent number and a child group and registering them in the group configuration information table, transfer from the child extension to the parent extension can be performed only by pressing the “group function button”. It is possible (S173).

  If the extension that has been put on hold is the parent extension in S172, the call control means 15 indicates that the call of the parent extension is transferred to the child extension, so that it corresponds to the group status table stored in the storage means 13. The parent extension state of the group number is changed to “Transferring” (S174). Then, the call control means 15 searches for all the child extensions that are child groups of the group number to which the parent extension belongs from the group configuration table, and performs an exchange operation for transferring.

  In this way, by dividing the extension belonging to the group number into a parent number and a child group and registering them in the group configuration information table, all the children that are child groups from the parent extension can be obtained simply by pressing the “group function button”. Transfer to the extension is possible (S175).

  Next, the exchange operation in each case of the exchange system according to the embodiment of the present invention will be described with reference to FIGS. 13 to 23, the private branch exchange 2 has an extension telephone 3a assigned to the extension number 1 as the parent number and the extension number 3a in the group configuration information table shown in FIG. An example in which the extension telephone 3b assigned to the extension number 3 is connected is shown.

For example, the extension telephone 3a is installed in the president's office, and the extension telephone 3b is installed in a secretary room adjacent to the president's office. The group number is “30” because it is group 1. The function button 41 of the extension telephone 3 shown in FIGS. 13 to 23 includes a “group function button for group 1” assigned to the button number “3” of the extension number 1 shown in FIG.
The “group function button for group 1” assigned to the button number “3” of the extension number 3 is assumed.

  First, the lighting state of the state notification means 42 of the extension telephone 3 when there is an incoming call addressed to the group number will be described with reference to FIG. First, when the call control means 15 determines that there is an incoming call addressed to the group number “30”, the parent number and child belonging to the group number “30” from the group configuration information table stored in the group information storage means 21. Read the child number that is a group. Then, the call control unit 15 notifies the state notification unit 17.

  The status notification means 17 prompts all the extension telephones (in this case, 3a and 3b) belonging to the group number “30” to quickly flash green (for example, 4 flashes per second) indicating the incoming call status. Make a notification. This is performed under the control of S102 shown in FIG. A notification from the status notification means 17 is transmitted to the extension telephone 3 via the extension communication means 11 and notified to the control section 30 via the communication section 40 of the extension telephone 3. Under the control of the control unit 30, the state notification unit 42 quickly flashes in green.

  Since the call control means 15 performs an incoming call exchange operation to all the extensions belonging to the group number, the extension telephone 3a of the extension number 1 which is the parent number and the extension telephone 3b of the extension number 3 which is the child number ring. To do. At that time, if the function button 41 to which the “group function button for group 1” of the extension telephone 3a connected to the parent extension or the extension telephone 3b connected to the child extension is pressed, the incoming call is made in the off-hook state. Can receive. This shows the control in S163 shown in FIG.

  In this way, when an incoming call is addressed to the group number, all the extension telephones belonging to the group number are ringed, and the lamp which is the status notification means 42 of the extension telephone 3 is blinked so that it can be determined that the incoming call has arrived. In other words, for the incoming call addressed to the group number, both the extension telephone 3a installed in the president's office and the extension telephone 3b installed in the secretary office are received. The user knows from the state notification means 42 that the incoming call is for the group number.

  Next, the lighting state of the state notification means 42 of the extension telephone 3 when there is an incoming call addressed to the master extension will be described with reference to FIG. When the call control means 15 determines that there is an incoming call to the extension number 1 that is the parent number of the parent extension, the call control means 15 searches the group configuration information table stored in the group information storage means 21 for the group number to which the extension number 1 belongs, The destination is changed to the group number and notified to the status notification means 17. The status notification means 17 quickly flashes green (for example, 4 per second) indicating the status of incoming calls addressed to the group number for all the extension telephones (in this case, 3a and 3b) belonging to the group number “30”. Notification). This is performed under the control of S102 shown in FIG.

  A notification from the status notification means 17 is transmitted to the extension telephone 3 via the extension communication means 11 and notified to the control section 30 via the communication section 40 of the extension telephone 3. Under the control of the control unit 30, the state notification unit 42 quickly flashes in green.

  Since the call control means 15 performs an incoming call exchange operation to all the extensions belonging to the group number, the extension telephone 3a having the extension number 1 which is the parent number and the extension telephone 3b having the extension number 3 which is the child number. It rings. At that time, if the function button 41 to which the “group function button” assigned to the extension telephone 3a connected to the parent extension or the extension telephone 3b connected to the child extension is pressed, the incoming call is received in an off-hook state. Can do. This is performed by the control in S163 shown in FIG.

As described above, since the call control means 15 performs an exchange operation for the incoming call addressed to the parent number in the same manner as the address addressed to the group number, all the extension telephones 3 belonging to the group number ring and the extension telephone 3 can be recognized so that the incoming call is received. The lamp which is the state notification means 42 is blinked. In other words, the incoming call addressed to the parent number has the same exchange operation as the incoming call addressed to the group number in both the extension telephone 3a installed in the president's office and the extension telephone 3b installed in the secretary office.

  Next, when the parent extension is busy, the lighting state of the state notification means 42 of the extension telephone 3 will be described with reference to FIG. When the call control means 15 determines that the extension number 1, which is the parent number of the parent extension, is busy, searches for the child numbers of all child groups belonging to the group number from the extension number 1, which is the parent number in the group configuration information table. Then, the status notification means 17 is notified. The status notification means 17 notifies the extension telephone 3a with the extension number 1 being the parent extension and the extension telephone 3b with the extension number 3 being the child extension, respectively, of information indicating that the parent extension is in use (during a call). . The state notification means 42 of the extension telephone 3 indicates that the extension telephone 3a connected to the parent extension is lit in green in S111 shown in FIG. 7, and the extension telephone connected to the extension in S112 shown in FIG. 3b is lit red.

  In this way, a state in which a call of the parent extension is in progress can be monitored by all the extension telephones 3 of the group number to which the parent number of the parent extension belongs. That is, the state that the extension telephone 3a installed in the president's room is busy can be monitored from the extension telephone 3b installed in the secretary room.

  Next, when the parent extension is on hold, the lighting state of the state notification means 42 of the extension telephone 3 will be described with reference to FIG. When the call control means 15 determines that the extension number 1 which is the parent number of the parent extension is put on hold during the call, all the child groups belonging to the group number from the extension number 1 which is the parent number of the group configuration information table The child number is searched and notified to the status notification means 17, and the hold destination is changed to the group number. The status notification means 17 sends the parent extension to the extension telephone 3a with the extension number 1 which is the parent extension and the extension telephone 3b with the extension number 3 which is the child extension, respectively, by the extension telephone 3a connected to the parent extension. Notify the information indicating that there is. The status notification means 42 of the extension telephone 3 indicates that the extension telephone 3a connected to the parent extension blinks slowly in green in S107 shown in FIG. 7, and the extension telephone 3b connected to the extension is also delayed in S107. Blinks green.

  In this way, it is possible to monitor from all the extension telephones 3 of the group number to which the parent number of the parent extension belongs that the holding of the parent extension is due to the extension telephone 3 connected to the parent extension. In this case, unlike the red lighting in which the parent extension indicates the call state, the green light blinks slowly in the hold, so that the state of the parent extension can be determined immediately. That is, it is possible to monitor from the extension telephone 3b installed in the secretary room that the telephone call of the extension telephone 3a installed in the president's office is on hold.

  Next, in the case where the child extension responds to a call addressed to the parent extension and puts it on hold, the lighting state of the state notification means 42 of the extension telephone 3 will be described with reference to FIG. If the call control means 15 determines that there is an incoming call to the extension number 1 which is the parent number of the parent extension, and that the extension telephone 3b which is the child extension responds and puts it on hold, the call control means 15 assigns the group number to which the extension number 3 belongs While changing the hold destination, the status notification means 17 is notified. The status notification means 17 indicates the status where all the extension telephones (in this case, 3a and 3b) belonging to the group number “30” are operated from the extension telephone 3b connected to the child extension to hold for the parent extension. Information of slow red flashing (for example, flashing twice per second) is given. This is performed under the control of S108 shown in FIG.

Thus, it is possible that is due to the extension telephone 3 pending parent extension is connected to the child extension is monitored from all extension telephones 3 of group numbers parent number of its parent extension belongs. In this case, unlike the red lighting that indicates that the parent extension is in a call state or the slow blinking of green that indicates the hold by the extension telephone 3a, the blinking is slow and the red light blinks.

  That is, even if the extension telephone 3b installed in the secretary room answers and puts a call to the extension telephone 3a installed in the president's office, it is on hold because it is an incoming call addressed to the parent extension that is the president. Therefore, it is possible to monitor not only the extension telephone 3a in the president's room but also the extension telephone 3b (all other child numbers belonging to the group number) installed in the secretary room.

  Next, when the call is put on hold by the “group call button”, the lighting state of the state notification means 42 of the extension telephone 3 will be described with reference to FIG. When the function button press information detecting means 16 detects that the function button 41 defining the “group call button” of the extension telephone 3a which is the parent extension is pressed, the function button press information detecting means 16 notifies the call control means 15. Then, the call control means 15 puts the call addressed to the extension number 1 as the parent number on hold, and changes the hold destination to the group number “30” to which the extension number 1 belongs. This control is performed by the control of S142, S143, and S144 shown in FIG.

  Then, the state notification means 17 that has received the notification from the call control means 15 makes a call of the parent extension to all the extension telephones (here, 3a and 3b) belonging to the group number “30” by the “group call button”. Notification of slow green blinking (for example, blinking twice per second) indicating that the hold has been made is performed. This is performed under the control of S107 shown in FIG. By this notification, the state notification means 41 of the extension telephones 3a and 3b blinks slowly in green.

  Similarly, when the function button press information detecting means 16 detects that the function button 41 defining the “group call button” of the extension telephone 3b which is a sub-extension is pressed, the call control means 15 is notified. Then, the call control means 15 puts the call addressed to the extension number 3 as the child number on hold, and changes the hold destination to the group number “30”. This control is similarly performed by the control of S142, S143, and S144 shown in FIG.

  Then, the state notification means 17 that has received the notification from the call control means 15 makes a call of the parent extension to all the extension telephones (here, 3a and 3b) belonging to the group number “30” by the “group call button”. A notification of slow red flashing (for example, flashing twice per second) indicating that the hold has been made is performed. This is performed under the control of S108 shown in FIG. By this notification, the state notification means 41 of the extension telephones 3a and 3b blinks slowly in red.

  In this way, by changing the hold destination to the group number by using the “group call button” for the incoming call, it is possible to notify the extension state to the extension telephone 3 belonging to the group number. That is, by setting the group number as the hold destination, it is possible to confirm whether the call is on hold from the extension telephone 3a installed in the president's office or from the extension telephone 3b installed in the secretary office. In addition, the hold by the extension telephone 3a and the hold by the extension telephone 3b can be distinguished.

  Next, a control method for canceling a call held on a group number will be described with reference to FIG. When the call control means 15 holds the call on the parent extension and determines that the hold destination is the group number, for example, as shown in FIG. 18, the “group call button” of the extension telephone 3a which is the parent extension The function button pressing information detecting unit 16 detects that the function button 41 that defines the function button 41 is pressed, and notifies the call control unit 15 of it. The call control means 15 regards the call addressed to the extension number 1, which is the parent number, as a hold, and the state notification means 17 that receives the notification from the call control means 15 sends all the extension telephones (here, the group number “30”). 3a and 3b) are notified of slow green blinking (for example, blinking twice per second), which is information indicating that the parent extension call has been put on hold by the “group call button”. This is performed under the control of S107 shown in FIG.

  By this notification, the status notification means 42 of the extension telephones 3a and 3b blinks slowly in green. At that time, the function button press information detecting means 16 notifies the call control means 15 by pressing the function button 41 of the extension telephone 3a in which the “group function button” is defined. If the call control means 15 determines that it is a “group function button”, the call is released and the call state is established. This is based on the control in S167 shown in FIG.

  Similarly, when a call on a child extension is put on hold and held on the group number, the status notification means 17 sends the extension number to all the extension telephones (in this case, 3a and 3b) belonging to the group number “30”. Notification of slow red flashing (for example, flashing twice per second) indicating that the call has been put on hold by the “group call button” is performed. This is performed under the control of S108 shown in FIG. By this notification, the status notification means 42 of the extension telephones 3a and 3b blinks slowly in red. At that time, by pressing the function button 41 of the extension telephone 3b in which the “group function button” is defined, the function button pressing information detecting unit 16 notifies the call control unit 15 of the fact. If the call control means 15 determines that it is a “group function button” by this notification, the call holding means is released and the call state is set. This is based on the control in S167 shown in FIG.

  In this way, the incoming call is put on hold by the “group call button” to the group number, and the hold is released simply by pressing the “group function button” provided for the extension telephone 3 belonging to the group number. Can do. In other words, the call on hold to the group number can be released in the same way from the extension telephone 3a installed in the president's office or from the extension telephone 3b installed in the secretary office.

  Next, a control method for transferring from a parent extension to a child extension will be described with reference to FIG. When the extension number 1 which is the parent number of the parent extension is busy, when the function button pressing information detecting means detects that the function button 41 of the extension telephone 3a defined in the “group function button” is pressed, the call Notify the control means 15. In response to this notification, the call control means 15 holds the call addressed to the extension number 1 which is the parent number, and changes the hold destination to the group number “30” to which the extension number 1 belongs. This control is performed by the control of S170 shown in FIG.

  Since the extension telephone 3a having pressed the function button 41 is connected to the parent extension, the child group of the group number “30” to which the extension number 1 as the parent extension belongs is referred from the group configuration information table (here, the extension). Phone 3b) Transfer. This is performed under the control of S173 and 174 shown in FIG.

  The status notification means 17 notifies the extension telephone 3b of the child group with the group number “30” of early red flashing, which is information indicating that the transfer is from the parent extension to the child extension. This is performed under the control of S104 in FIG. The extension telephone 3b of the child group that has received the transfer can make a transfer response by pressing the “group function button”. This is performed under the control of S165 in FIG.

  If the extension telephone 3b of the child group or the extension telephone 3 of another child group (not shown) does not go off-hook, or if the user of the extension telephone 3a wants to interrupt the transfer operation, the extension telephone is being transferred. By depressing the “group function button” 3a, the call being transferred can be retrieved and the call can be made again. This is performed under the control of S167 in FIG.

In this way, by dividing the extension belonging to the group number into a parent number and a child group and registering them in the group configuration information table, the parent extension can be obtained simply by pressing the “group function button” in a state where a call is made To the child extension. In other words, the transfer can be easily performed by simply pressing the “group function button” from the extension telephone 3 a installed in the president's office to the extension telephone 3 b installed in the secretary office.

  Next, a control method for transferring from a child extension to a parent extension will be described with reference to FIG. It is detected that the function button pressing information detecting means 16 has pressed the function button 41 of the extension telephone 3b defined in the “group function button” when a call is made with the extension number 3 which is the child number of the child extension. Then, the call control means 15 is notified. The call control means 15 holds the call addressed to the extension number 3, which is a child number, by this notification, and changes the hold destination to the group number “30” to which the extension number 3 belongs. This control is performed by the control of S170 shown in FIG.

  Since the extension telephone 3b having pressed the function button 41 is connected to the child extension, the parent extension of the group number “30” to which the extension number 3 which is the child extension belongs is referred from the group configuration information table (here, the extension telephone). 3a) Transfer. This is performed under the control of S172 shown in FIG.

  The status notification means 17 notifies the extension telephone 3a of the parent extension with the group number “30” of the slow red flashing indicating that it has been suspended by the transfer from the child extension to the parent extension. This is performed under the control of S108 in FIG. The extension telephone 3a of the parent extension that has received the transfer responds to the incoming call by an off-hook operation or cancels the hold by pressing the “group function button”. This is performed under the control of S167 in FIG.

  Also, when the transfer operation is performed but the extension telephone 3a of the parent extension does not go off-hook or when the user of the extension telephone 3b wants to interrupt the transfer operation, the “group function button” of the extension telephone 3b is pressed during the transfer. Thus, the call being transferred can be retrieved and the call can be made again. This is performed under the control of S167 in FIG.

  In this way, by dividing the extension belonging to the group number into the parent number and the child group and registering them in the group configuration information table, the child extension can be obtained simply by pressing the “group function button” in the state of a call. Can be transferred from the parent extension to the child extension, and can be distinguished from the transfer from the parent extension to the child extension. That is, the transfer can be easily performed by simply pressing the “group function button” from the extension telephone 3b installed in the secretary room to the extension telephone 3a installed in the president's office.

  Next, a method for controlling the call from the parent extension to the child extension will be described with reference to FIG. When the extension button 3a, which is the parent number of the parent extension, is off-hooked and the function button 41 defined as “group function button” is pressed, the function button 41 is pressed when the function button 41 is pressed. The detection means 16 detects and notifies the call control means 15. The call control means 15 indicates that the parent extension state of the group state table shown in FIG. 24 is waiting, and the pressed function button 41 is a “group function button” based on the extension function button information shown in FIG. If it is determined, the exchange operation is performed so that the incoming call is made to the group number. Then, the call control means 15 reads out the child group of the group number to which the parent number belongs from the group configuration information table, and causes the extension telephone 3b to receive the call. This is performed by the control of S168 shown in FIG.

  The state notifying unit 17 that has received the notification from the call control unit 15 notifies all the extension telephones 3a and 3b belonging to the group number of quick green blinking that is information indicating the incoming call to the group number. This is performed under the control of S102 in FIG. The extension telephone 3b of the incoming child group can talk by going off-hook. Further, a call can be made by pressing a “group function button” defined in the function button 41 of the extension telephone 3b. This is based on the control of S163 in FIG.

  In this manner, by dividing the extension belonging to the group number into the parent number and the child group and registering them in the group configuration information table, a call can be made from the parent extension to the child extension only by pressing the “group function button”. Is possible. That is, calling can be easily performed by simply pressing the “group function button” from the extension telephone 3a installed in the president's office to the extension telephone 3b installed in the secretary office.

  Finally, a method for controlling the call from the child extension to the parent extension will be described with reference to FIG. When the extension telephone 3b having the extension number 3 which is the child number of the extension is off-hooked and the function button 41 defined as “group function button” is pressed, the function button 41 is pressed when the function button 41 is pressed. The detection means 16 detects and notifies the call control means 15. When the pressed function button 41 is a “group function button” based on the extension function button information shown in FIG. 4, the call control means 15 reads the parent number of the group number to which the child number belongs from the group configuration information table. The incoming call is made to the extension telephone 3a. This is performed under the control of S169 shown in FIG.

  The state notifying unit 17 that has received the notification from the call control unit 15 notifies all the extension telephones 3a and 3b belonging to the group number of quick green blinking that is information indicating the incoming call to the group number. This is performed under the control of S102 in FIG. The extension telephone 3a of the parent extension that has received an incoming call is able to make a call by going off-hook. Further, a call can be made by pressing a “group function button” defined in the function button 41 of the extension telephone 3a. This is based on the control of S163 in FIG.

  In this way, by dividing the extension belonging to the group number into a parent number and a child group and registering them in the group configuration information table, a call from the child extension to the parent extension can be made only by pressing the “group function button”. Is possible. That is, calling can be easily performed by simply pressing the “group function button” from the extension telephone 3b installed in the secretary room to the extension telephone 3a installed in the president's office.

  The private branch exchange and exchange system according to the present invention is a private branch exchange that needs to easily receive and transfer when an extension telephone used in a company or the like is installed in a place having a one-to-many relationship. And useful for switch systems.

Configuration diagram of an exchange system according to an embodiment of the present invention Configuration diagram of a private branch exchange according to an embodiment of the present invention The figure explaining the composition of a group composition information table The figure explaining the composition of extension function button information The figure which shows the structure of the extension telephone used for the switching system which concerns on embodiment of this invention. External view of extension telephone according to an embodiment of the present invention Flow chart explaining the state of lighting / flashing of the state notification means Flowchart explaining a control method when call control means receives an extension Flowchart explaining control method when call control means arrives at extension of group number Flowchart for explaining a control method for holding by the call control means in the extension of the group number Flowchart explaining how call control means controls parent extension status management Flowchart explaining control by group function button assigned to function button of extension telephone The figure explaining operation | movement of the switching system which concerns on embodiment of this invention The figure explaining operation | movement of the switching system which concerns on embodiment of this invention The figure explaining operation | movement of the switching system which concerns on embodiment of this invention The figure explaining operation | movement of the switching system which concerns on embodiment of this invention The figure explaining operation | movement of the switching system which concerns on embodiment of this invention The figure explaining operation | movement of the switching system which concerns on embodiment of this invention The figure explaining operation | movement of the switching system which concerns on embodiment of this invention The figure explaining operation | movement of the switching system which concerns on embodiment of this invention The figure explaining operation | movement of the switching system which concerns on embodiment of this invention The figure explaining operation | movement of the switching system which concerns on embodiment of this invention The figure explaining operation | movement of the switching system which concerns on embodiment of this invention The figure which shows the structure of the group state table stored in a storage control means The figure which shows the structure of the group pending | holding management table stored in a storage control means

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Switch system 2 Private branch exchange 3, 3a, 3b Extension telephone 4 Outside line 5 Extension 10 Line communication means 11 Extension communication means 12 Control means 13 Storage means 15 Call control means 16 Function button press information detection means 17 Status notification means 21 Group information storage Means 22 Extension function button information storage means 25 CPU
26 switch 27 memory 28 extension interface unit 29 outside line interface unit 30 control unit 31 display unit 32 speaker 33 microphone 34 dial button 35 hook key 36 operation unit 37 function button pressing information transmitting unit 38 function button pressing detecting unit 40 communication unit 41 function button 42 Status notification means 43 Main body 44 Handset

Claims (12)

An exchange system using a private branch exchange and a plurality of extension telephones,
The private branch exchange is
A line communication means for connecting to an outside line;
An extension communication means connected to the extension;
Storage means for storing the group information storage means for storing grouping and child numbers 1 group number of the at least one or more of the extension telephone assigned as a parent number and a child of 1 of the extension station assigned as a parent,
Call control means for controlling the switching operation; and status notifying means for sending information indicating the state of the call of each of the extension telephones to each of the extension telephones. The exchange operation of the private branch exchange and each of the extension telephones Control means for controlling the operation of
The extension telephone is
A communication unit connected to the private branch exchange;
An operation unit having a function button for requesting a function to the private branch exchange, and a state notification unit for notifying the state of the call according to an instruction from the private branch exchange;
The group information storage means further includes a group state table that stores a group state representing the state of the group number and a parent extension state of the parent number belonging to the group number corresponding to the group number,
When there is an incoming call to the private branch exchange,
If it is determined that the call control means is an incoming call addressed to the parent number, the call control means stores the incoming call in the group status of the group status table,
The status notification means sends the incoming call of the parent number and the incoming call of the child number to the extension telephones belonging to the group number based on the group status,
2. The exchange system according to claim 1, wherein the status notification means of each of the extension telephones notifies an incoming call display indicating that the incoming call is being received. For the incoming call made to the private branch exchange, even when the call control means determines that the incoming call is for the group number, the call control means stores the incoming call in the group status in the group status table. 2. The exchange system according to claim 1, wherein The storage means further comprises extension function button information storage means for storing extension function button information defining functions associated with the function buttons of the extension telephones and associated with the group number,
The control means further includes function button pressing information detecting means for detecting pressing of the function button of each extension telephone,
When the function button press information detecting means detects that the function button of any of the extension telephones has been pressed, the call control means refers to the extension function button information storage means and receives an incoming call response belonging to the group number. The call control means determines whether the extension telephone that has pressed the function button is the parent number or the child number based on the group information storage means. Judgment
If it is the parent number, the call control means starts a call of the parent number, stores busy and standby in the group state in the parent extension state of the group state table, and the state notification means Based on the parent extension state, sends out the use of the parent number to each extension telephone belonging to the group number, and the status notification means of each extension telephone sets the use based on the parent extension state Announcement of a busy display indicating the inside,
If it is the child number, the call control means starts a call of the child number for which the function button is pressed, stores the waiting state in the group state of the group state table, and the state notification means The busy is sent to the extension telephone of the child number whose button is pressed, the status notification means of the child number notifies the busy display based on the busy, and the status notification means includes the group The waiting state of the group state is sent to the extension telephones that belong to a number and excluding the child number whose function button is pressed, and the state notification means of the extension telephone notifies the waiting state based on the waiting state. The exchange system according to claim 1 or 2, characterized in that 4. The exchange system according to claim 3, wherein the call control means detects an off-hook via the extension communication means, instead of detecting pressing of the function button. The group information storage means further includes a group hold management table that stores hold party information indicating a call partner holding a call and hold party information indicating the extension telephone that has made a hold request in correspondence with the group number. ,
When the function button press information detecting means detects the press of the function button by any of the extension telephones during use, the call control means refers to the extension function button information storage means and holds the group belonging to the group number. When it is determined that the function button corresponds to the request,
The call control means puts the call on hold, holds the group status in the group status table, holds the call partner information in the hold partner information in the group hold management table, and the group hold management table. Storing information on the extension telephones that made the hold request in the holder information,
When the call control unit determines that the holdee information is the parent number, the status notification unit sets the hold of the parent number to the extension telephone of the parent number and the hold of the parent number To the extension number of the child number, the status notification means of the parent number indicates the hold indication of the parent number, and the status notification means of the child number indicates that the parent number is on hold. Inform each hold display,
When the call control unit determines that the holdee information is the child number, the status notification unit determines that the child number is being held and the extension number of the parent number and the extension number of the child number The status notification means for the parent number notifies the hold display that the child number is on hold, and the status notification means for the child number notifies the hold display of the child number. 4. The exchange system according to claim 3, wherein 6. The status notifying means sends out the on-hold partner information to each extension telephone in addition to the on-hold status, and the status notifying means notifies different modes based on the on-hold partner information. Switch system. When the function button pressing information detecting means detects pressing of the function button by any of the extension telephones belonging to the group number during the holding,
The exchange system according to claim 5 or 6, wherein the call control means releases the on-hold status and starts a call of the extension telephone whose function button is pressed. 6. The call control means, instead of detecting pressing of the function button, the call control means detects the hold request due to pressing of a hold button via the extension communication means. The exchange system according to any one of claims 1 to 7. The call control means stores a pending status in the group status table when the specific child number makes an incoming call response to the incoming call to the specific child number and the specific child number makes a hold request. 6. The exchange system according to claim 5, wherein said status notification means for said specific child number is notified of suspension without performing the operation. The group information storage means further includes a group hold management table that stores hold party information indicating a call partner holding a call and hold party information indicating the extension telephone that has made a hold request in correspondence with the group number. ,
When the function button press information detecting means detects a press of the function button by any of the extension telephones during use, the call control means refers to the extension function button information storage means and transfers belonging to the group number When it is determined that the function button corresponds to
The call control means puts the call on hold, transfers information to the group status in the group status table, information indicating the call partner put on hold in the hold counterpart information in the group hold management table, and the group hold Information on the extension telephone that requested the transfer is stored in the hold information of the management table, respectively, and the group information indicating whether the extension telephone on which the function button is pressed is the parent number or the child number. Judgment based on storage means,
If it is the parent number, the call control means performs an exchange operation to transfer the child numbers belonging to the group number to the extension telephones, and the state notification means changes the group state and the holdee information. Based on the transfer of the parent number and the transfer of the child number to each extension telephone belonging to the group number,
The status notification means of each of the extension telephones notifies a display during transfer indicating the transfer based on the group status and the holdee information,
If it is the child number, the call control means performs an exchange operation to transfer to the extension telephone of the parent number of the group number to which the child number belongs based on the group information storage means, and the status notifying means Based on the group status and the holdee information, the transfer of the parent number and the transfer of the child number are sent to the extension telephones belonging to the group number, and the extension telephones 4. The exchange system according to claim 3, wherein the status notification means notifies a transfer in-progress display indicating the transfer in progress based on the group status and the holdee information. When the extension telephone of the parent number that has pressed the function button or the extension telephone of the child number that has pressed the function button presses the function button again during the transfer, the call control means 11. The exchange system according to claim 10, wherein said exchange is controlled so that said call being transferred can be retrieved and said call can be made again. 11. The call control unit according to claim 10 or 10, wherein the call control unit detects a hold request by pressing a transfer button via the extension communication unit, instead of detecting the pressing of the function button. Item 12. The exchange system according to Item 11.

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