JP3351620B2 - Private branch exchange system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a private branch exchange system in which a transfer destination for telephone transfer can be selected and transferred by simple operation from candidates obtained from the transfer information collected normally. It is about.

[0002]

2. Description of the Related Art In recent years, exchanges have been controlled by software using a microprocessor as a control center, and increasingly intelligent and sophisticated functions have been achieved. An electronic exchange (private exchange) for private telephone exchange using a microcomputer accommodates an extension and an external line and performs various functions in addition to a basic function of performing exchange connection between extensions and between an extension and an external line. Service is enabled.

[0003] A private branch exchange, which accommodates a plurality of outside lines and a plurality of extensions, performs an exchange operation.
For incoming calls from outside lines, there are various methods such as a relay console system in which all incoming calls are received at the reception desk, and outside lines are grouped, and incoming calls for that group can be answered by extension telephones in the group, such as a group master telephone system or a master telephone system. There is a method, and an optimum method according to the scale and circumstances of the user is adopted.

Conventionally, in private branch exchanges employing the group master telephone system or the master telephone system, when an incoming call occurs in a certain group (for example, a section in a company), one of the groups responds to the incoming call. The responder then interacts with the caller to see who the caller really wants to talk to and take over the call. The transfer is performed by performing a transfer operation using the transfer function of the private branch exchange.

[0005] In addition, it is often necessary to transfer not only incoming calls from outside lines but also incoming calls from internal lines. By the way, although the transfer operation also varies depending on the system,
Directly dial the desired extension to call that extension, or dial a special number, then dial the desired extension to call that extension, or hold,
This is a method of dialing the desired extension and calling the extension.

Therefore, according to this conventional device, when a person who responds to an incoming call from an outside line to a group or a person who responds to an incoming call from an internal line uses a transfer function as a means of connection, the operation of the transfer function is stopped. In this case, the individual telephone number of the other party to be transferred must be checked and dial input must be performed, resulting in a troublesome operation.

[0007]

As described above, in the above device, when an incoming call from an outside line to a certain group occurs,
The person who responds to the incoming call needs to take over to the person the caller really wants to talk to. In addition, even if the call does not come from an outside line, if the call arrives from an extension, the person who responds to the call needs to take over to that person if the caller really wants to talk to another person. .

When the transfer function is used as the transfer means, the individual telephone number (extension number) of the transfer destination must be checked and the number must be dialed.

[0009] Therefore, when the number of extensions in the group is large, the extension number of each telephone cannot be remembered. will be written that, as long as the job is not accepted full-time, not only hinder the work of the agency's, calling party, such as also taken more time than necessary until the call with the purpose of the opponent, degradation of service There was a problem that leads to.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a private branch exchange system with good operability that can easily check a target transfer destination and can quickly transfer an incoming call to a target extension.

[0011]

In order to achieve the above object, the present invention is configured as follows. In other words, a private branch exchange system that accommodates a plurality of extensions and external lines, performs exchange connection between the extensions and external lines, and allows incoming calls to be transferred between extensions by a transfer function, is obtained at least when calling from an extension. A storage function for storing the relationship between a caller and a receiver as information, and when transferring this call to another extension from the extension responding to the call, the caller of the call based on the information stored by the storage function. A control function for obtaining information on an extension related to the extension, and controlling the display of the information on the extension to which the response was made, based on the selection information from the response extension, enabling the incoming call to be transferred to the extension corresponding to the selection information. Control means having a transfer function for controlling the display means to display the display information from the control means on the extension, and information displayed on the display means. And operating means for selecting operation of one, characterized in that it constituted by connecting a telephone terminal having a terminal controller providing to the control means the selected information as selection information by the operating means.

Further, the control means has the storage function
In addition to the relationship between the source and destination obtained when calling from an extension to an extension or an outside line, by transferring the incoming call, the information of the extension that finally communicated with the called extension or the called external line is transmitted to the source and destination. Have a function to accumulate as a relationship.

[0013]

In such a configuration, the control means accumulates, as information, at least the relationship between the source and the destination obtained when making a call from an extension to an extension or an outside line. And
When an extension responds to an incoming call from an outside line or extension and transfers the incoming call to another extension from the responded extension, it is related to the source of the incoming call based on the stored information. The information of the extension is obtained, and the information is controlled so as to be displayed on the responded extension.

A telephone terminal having a display means for displaying display information from the control means is connected to the extension, and if the response extension is such a telephone terminal, the incoming call is transmitted to the display means. Information on the extension that is related to the source of the outside line is displayed. The responder looks at the displayed information and selects a destination to be taken over by the other party (source), and performs a selection operation by the operation means. The selected information is sent to the control means as selection information.

The control means performs control based on the selection information from the response extension so that the incoming call can be transferred to the extension corresponding to the selection information. In the present invention, an incoming call to a specific group from a specific caller (for example, another section in a company)
Focusing on the fact that a call is always made with a specific person in the group, and in the usual handover operation, the information of the person who was finally talking is corresponded to the caller and its destination. When the person who responds to the incoming call to the group after performing the transfer operation for the connection, dials the transfer destination and displays the display of the terminal used by the responder. Displays the information of the candidate of the transfer destination based on the information normally accumulated, and selects the transfer destination by simple operation (for example, pressing the soft key) on the terminal used by the respondent. By doing so, transfer can be performed without having to perform dial input. In this way, when responding to the incoming call, when performing the handover work, it eliminates annoyance and improves operability, without wasting time,
In addition, it is possible to provide a private branch exchange system that leads to an improvement in service to the transmission source.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention accumulates information on a caller and the other party who has finally communicated in correspondence with the caller and the called party, and a person who responds to the subsequent incoming call performs a transfer operation to take over the call. When it is performed, the information of the candidate of the transfer destination is obtained from the information accumulated so far, the content is displayed on the display of the terminal used by the responder, and furthermore, the simple operation performed by the responder is performed. Operation to select one transfer destination from the information displayed on the display and transfer the caller's call to the selected destination. Therefore, when performing a transfer operation, it is possible to eliminate the troublesome work of checking the individual telephone number of the transfer destination party and dialing in each time, and an embodiment of the present invention will be described below. ,
This will be described with reference to the drawings.

In the private branch exchange system of the present invention, the transfer destination in the handover of the telephone uses the callee extension or the callee information as the callee's outside line information from each extension collected as usual as the handover information. Then, it has a function to select a transfer destination extension from the candidates to be obtained by a simple operation and to be able to transfer the extension, but this is a function that allows a specific caller (for example, another section in a company) to transfer to a specific group. It focuses on the fact that incoming calls always talk to a specific person in the group.

Details will be described. FIG. 1 is a block diagram showing a schematic configuration of a private branch exchange system according to one embodiment of the present invention. In the figure, 1 is a private branch exchange and 2-1 to 2
-M is an extension terminal such as an extension telephone, and 3-1 to 3-m are external lines (such as subscriber lines).

The private branch exchange 1 accommodates extension terminals and external lines (office lines, dedicated lines, etc.) and performs exchange connection between extensions and between an extension and an outside line. , Office line circuits (trunk circuits) 12-1 to 12-n,
It comprises subscriber circuits (line circuits) 13-1 to 13-m, a control unit (central control unit CC) 14, a storage unit 15, a tone ringer circuit 16, and the like.

The communication path circuit 11 performs exchange connection from one extension to another or from an extension to an external line (office line or dedicated line) and from an external line to an extension. The control unit 14 controls the exchange operation of the exchange circuit 11. And other various controls.

The storage unit 15 stores various control programs and various tables of the control unit 14 and data such as set function contents. In addition, various information generated in the exchange, such as a call extension, is stored. The storage unit 15 updates and stores the number information, the call time, the number of calls, the number of calls to outside lines, the telephone number of the call destination, the call time, the call charge, the current state, and the like. A program or the like for controlling data transfer between the devices is held.

The maintenance terminal 6 has input means such as a keyboard and a display (display means), and can input and change data and programs, read data and the like to the exchange body 1. The maintenance terminal 6 is connected to the control unit 14 so that it can communicate with the control unit 14.

Extension circuits 13-1 to 13- of exchange body 1
m is a connection interface provided for each extension, and serves as a connection interface between the switching circuit 11 and each extension terminal. The line circuits 12-1 to 12-n are exchange circuits 1
1 is a circuit for interfacing with external lines 3-1 to 3-n respectively, and for performing incoming call detection, closing a DC loop for line capture, and the like.

The switching circuit 11 is controlled by the control unit 14 to control the extension circuits 13-1 to 13-m and the local line circuits 12-1 to 12-m.
-N so as to form a communication path to enable a normal switching operation. Further, a tone ringer circuit 16 is connected to the switching circuit 11 so that various tone signals required for the telephone system can be transmitted.

The extension circuits 13-1 to 13-m and the local line circuit 1
Terminal control cards such as 2-1 to 12-n and control unit 14
Is transmitted and received by the control highway 18, but since each terminal control card is assigned to an input / output port, each terminal control card decodes its own port number so that the terminal can be specified in the form of a port number that specifies it. Means are provided so that when the port number matches that of the own device, the access to the own device is recognized.

The above-mentioned components in the exchange body 1 are connected to a control unit 14 via a control highway 18, and the control unit 14 operates according to a control program stored in the storage unit 15 in advance. 13-m and a communication path between the line circuits 12-1 to 12-n are controlled to enable a normal switching operation. Further, in order to realize these controls, the storage unit 15 has programs and data for selecting a partner port number to be subjected to exchange connection control and performing various controls based on off-hook and on-hook signals based on dial information. Have been.

Further, the control unit 14 sends the user name (or department name) of each extension from each telephone terminal (in the case of a multifunctional telephone) or from the maintenance terminal 6, and the specifications for each telephone terminal, and A setting control function that enables information such as destination names (caller-specific information (caller name)) and index parameters to be registered in respective registration tables for each external telephone number, When a call is made from one extension to another or from one extension to another extension, the information of the extension to be called (extension number, etc.) and the information of the dialing destination (destination to the outside line or extension) are temporarily stored in a temporary table, and the calling extension can make a call. The storage function for registering the information held in the temporary table in the destination information storage table for each caller 51 described later when the call is terminated, the transfer of the call for an incoming call from an outside line or an extension line, etc. Destination In addition to the storage function of storing the information of the extension that has become available in the destination information table 52 for storing the source of the external line or the extension, the destination and extension number of this table are registered with the destination name by telephone number registered above. It has a collating and organizing function for organizing in correspondence with the user name (or department name) of the extension.

Further, when an incoming call from an outside line or an internal line is transferred, a transfer support function becomes available. When the telephone number information of the source of the incoming call to be transferred is obtained, an automatic search mode is used. When the telephone number information has not been obtained, the transfer destination candidate can be obtained and presented in the manual search mode.

That is, when a transfer operation is performed, one of the above two modes of the transfer support function is entered depending on whether or not the telephone number information of the source of the incoming call to be transferred is obtained, and the automatic search of the transfer support function is performed. In the mode, the extensions having the highest frequency of communication with the other party of the telephone number of the caller to be transferred using the information of the destination information storage table 51 for each caller and the information stored in the other party information table 52 are obtained in order of frequency. The extension is displayed together with a selection code such as a selection number (the extension number can also be displayed together with the department name and the user name of the extension). Then, the selected extension is called (the selection code may not be displayed in the case of the designation method using the cursor), and the call is automatically transferred to the called extension.

If the telephone number information of the caller to be transferred is not obtained at the time of the transfer operation, a manual search mode is set. In this mode, the information of the caller (the caller's company name, department name, When a part of a personal name or the like is input as a keyword, a function for obtaining a candidate list of caller names that can be extracted in relation to the keyword from a sender-specific information (caller name) registration table, and a function based on the candidate list When the caller is selected and confirmed, dial information (telephone number) corresponding to the caller name is obtained from the caller name, and the stored information (the callee destination information storage table 51 for each caller) is obtained from this information. Based on the information and the information in the other party information table 52), extensions having a high frequency of communication with the other party of this telephone number are obtained in order of frequency, and the extension is displayed together with a selection code such as a selection number (extension number and affiliation). The signature and the user name of the extension can also be displayed together). If the desired code is selected from the displayed contents using the selection code (the selection code does not have to be displayed in the case of the designation method using the cursor), The selected extension is called, and the call can be automatically transferred to the called extension. The above is the transfer support function.

FIG. 2 is a block diagram showing a functional configuration of the control unit 14, showing a functional configuration necessary for realizing a transfer support function which is a central function of the present invention.
Accordingly, although the functions normally required for the exchange are not shown in this figure, they are of course possessed.

As shown in the figure, the control unit 14 of the system according to the present invention collects information necessary to obtain a candidate for an incoming call from an outside line or an inside line, as shown in FIG. A transfer destination information storage means 41 for storing the contents of a transfer destination that is normally used for a caller and a callee at the time of calling to a transfer destination candidate calculating means 42 for obtaining a transfer destination candidate from the stored information; The transfer destination candidate information display means 43 for controlling transfer so as to display the information on the transfer destination candidate obtained by the transfer destination candidate calculation means 42 on the display of the terminal (extension telephone), and the transfer destination candidate information selected by the operation of the terminal. A transfer destination selecting means 44 for obtaining a transfer destination partner as selected and designated transfer destination partner information, and selecting the transfer destination based on the selected and designated transfer destination partner information obtained by the transfer destination selecting means 44 To the constant transfer destination, and a transfer means 45 for controlling so as to transfer the call originator.

FIG. 3 is a diagram of a table set in the storage unit 15 and playing an important role in realizing the present invention. As shown in FIG. As an information table of the contents of the connection to be created based on the collected information of the transmission to the destination, a destination information storage table 51 for each sender and a destination information table 52 are provided.

The destination information storage table 51 for each sender is a table in which the relationship of the reverse call flow which is naturally predicted from the frequency of the call from the extension to the outside line or the other party of the extension is tabulated. Corresponding to the source of the external line or the source of the extension, information (extension number) of the called party (department of the extension terminal closely related to the source) is held.

Further, the other party information table 52 indicates a source (an extension source, a source from an external line (if the source is an external line, ISDN (This can be applied to a service network that sends source information to the receiving side, such as a network.)) The destination of another extension (not the answering extension, but finally the destination of the source) This is a table for saving information of the extension (extension) in correspondence with the occurrence frequency.

By appropriately selecting the method of saving information in the destination information storage table 51 for each sender and the destination information table 52, it is possible to obtain a more frequent destination as a candidate for a transfer destination. .

FIG. 4 is a perspective view showing a configuration example of a multifunctional telephone used as extension telephone terminals 2-1 to 2-m accommodated in the private branch exchange 1. As shown in FIG. In the figure, 2 is a telephone terminal main body, 21 is a handset (handset), 22 is a hook mechanism, 23 is a dial mechanism (dial key), 24 is a function key, 24a is a cursor key, 25 is a display lamp (LED; And 26, a display device such as a liquid crystal display panel for displaying characters.

FIG. 5 is a block diagram showing a circuit configuration of the multifunctional telephone. In the figure, reference numeral 200 denotes a telephone terminal control unit. The telephone terminal control unit 200 includes an interface circuit 206, a memory 270, a processor 209, an LED control circuit 210, a key switch control circuit 211, a voice control circuit 212, and a handset control. A circuit 213 and an LCD control circuit 241 are provided.

The interface circuit 206 is a private branch exchange 1
The interface circuit 206 is connected to an extension circuit of a private branch exchange via a line.

The processor 209 is a terminal control element which plays a central role in controlling the multi-function telephone.
Called PU. The terminal CPU 209 is based on a control program of a memory 270 configured by a ROM and a RAM,
Executes operation control as a control unit of the multifunctional telephone.

The program executed by the terminal CPU 209 has an initial processing (initial setting processing) routine. When the multi-function telephone starts operating, the processing automatically starts at the initial stage and the function key 24 is activated. Key allocation data, which is key data to be set, is received from the control unit 14 of the private branch exchange as key number information for each key, and a program for storing the received key allocation data in the memory 270 is provided in the memory 270. It is.

The LED control circuit 210 is an LED 25 provided for a function key 24 in a multifunctional telephone.
The key switch control circuit 211 is a key switch such as a function key 24, a cursor key 24a, etc., and a dial key 23 in a multifunctional telephone. The voice control circuit 212 supplies a ringer signal and a voice signal to the speaker 20, the handset control circuit 213, and the handset 2
This is for sending the voice from No. 1 to the electronic exchange.

The LCD control circuit 241 is for driving a display (LCD (liquid crystal display)) 26 which is a character display in a multi-function telephone, and displays display data and control signals from a terminal CPU 209. To control the character display.

Next, the operation of the apparatus of this embodiment having the above-described configuration will be described. In this system having such a configuration, when an incoming call is received from an outside line, the control unit 14
An incoming call is detected from 2-1 to 12-n, and the extension terminal set as a representative (in the case of the extension group type) or the corresponding extension directly (PBX dial-in; In this case, the call is directly received by dialing the subscriber number. Then, a communication path is secured by the response of the extension terminal, and communication between the two is enabled. To transfer the incoming call to another extension, the transfer operation is performed from the receiving terminal.

Then, the control unit 14 of the private branch exchange checks the restrictions on the extension of the transfer destination and calls the extension when the connection is possible. When the other party responds, the control unit 14 disconnects the extension terminal that has performed the transfer operation, and the control unit 14 secures a communication path between the transfer destination extension and the calling-side external line, thereby enabling a call between them.

When a call is made from an extension to an outside line, the control unit 14 searches for an empty one of the office line circuits 12-1 to 12-n by calling operation of the extension terminal, and regulates connection with the calling extension. After checking, if a connection is possible, a call path is secured using this free office line circuit, and dial information is output to the central office exchange. Then, when connected to the other party through the central office, communication becomes possible.

Between extensions, receiving an extension number from the calling extension,
The connection regulation between the extensions is checked, and if the connection is possible, the incoming call is controlled to the extension circuit of the extension number concerned, and the connection terminal is responded by the connection terminal of the extension circuit to secure the communication path and enable communication.

Various controls including the transmission / reception control of the office line circuit and the extension circuit are performed using the port number. For example, if a certain extension A is assigned to the port number PNn, the extension A Is called by accessing the port number PNn. Such control is performed by the storage unit 1
5 is realized by the control unit 14 controlling based on the terminal-port number information stored in the storage unit 5.

Also, when transferring from an extension responding to an incoming call from an extension to another extension, or in response to an incoming external line from a telephone terminal of one extension, the incoming external line is taken to another extension. When a transfer operation is performed to connect a call, the present system, if the extension terminal that performed the transfer operation has a display, displays the callee's extension counterpart (the extension of the caller (however, in the case of transfer between extensions)) and the incoming extension. When a candidate for an extension that is closely related to the other party (in the case of transferring an incoming extension to an extension) is searched for and displayed on the display unit, and a favorite is selected from the displayed extension terminal from the displayed candidate, By using a transfer support function that automatically calls the selected extension and enables transfer, the successor can easily call the target transfer destination.

That is, in this case, when the extension telephone terminal is operated in the first stage for the transfer operation by inputting a special number for the transfer operation or operating the transfer key, the operation information is controlled by the private branch exchange 1. This is transmitted to the unit 14, and the control unit 14 searches the terminal specification information to determine whether the terminal that has performed the transfer operation has a display.

If the terminal has a display, the transfer support function can be used. Therefore, the automatic search mode or the manual search mode in the transfer support function can be used.
Select a transfer destination candidate.

The automatic search mode is a mode in which the telephone number information of the source of an incoming call to be transferred is obtained, and is automatically selected based on the telephone number information of the source of the incoming call. , The details of which will be described later. In this mode, an incoming call from an extension is transferred, and an incoming call is sent from a network such as an ISDN network in which information on a transmission source is transmitted from an office.

On the other hand, the manual search mode in the transfer support function is a mode in a case where the telephone number information of the source of an incoming call to be transferred is not obtained, and a mode in which a search can be performed by manually inputting a keyword. It is.
Therefore, the present invention is applied to an incoming call from an analog public network or the like.

In the manual search mode in the transfer support function, a message prompting the user to perform either the operation of inputting the information of the caller or the operation of inputting the extension number is transmitted to the extension side as transmission information and transmitted. Display on the display of the extension terminal.

On the telephone terminal side, the transmission information from the control unit 14 is transmitted to the terminal CPU via the interface circuit 206.
209, and temporarily stores it in the memory 270. And
Terminal CPU 209 responds to the display command by displaying this message (a message prompting the user to perform either an operation of inputting the information of the caller or the operation of inputting the extension number) on display 2
6, the LCD control circuit 241 is controlled. As a result, the information received from the control unit 14 is displayed on the display 26.

Next, the responder of the extension terminal operates the extension terminal and inputs the extension number of the transfer destination or the name of the other party of the caller (one letter of the other party name, initials of the other party name, parameters of the other party, etc.). Input operation). When the transfer destination extension number is input, this operation input information is given from the key switch control circuit 211 to the terminal CPU 209,
The terminal CPU 209 converts the data into data and outputs the data to the extension circuit connected to the calling terminal via the interface circuit 206. Thereby, in the private branch exchange 1, the control unit 14 receives information by operating the key switch via the extension circuit.

Then, the control unit 14 recognizes that the input information is an extension number, and controls to transfer the information to the extension number. On the other hand, if you enter the name of the sender,
This operation input information is given from the key switch control circuit 211 to the terminal CPU 209, which converts the data into data and outputs it to the extension circuit connected to the calling terminal via the interface circuit 206. Thereby, in the private branch exchange 1, the control unit 14 receives information by operating the key switch via the extension circuit.

Then, the control unit 14 retrieves and extracts the corresponding destination (the corresponding company name, department name, etc.) from the registration table of the per-sender information (sender name) in the storage unit 15 based on these information. After the name is converted into the destination name, the name is transmitted to the extension side and controlled to be displayed on the display of the extension terminal (case A). If there is only one search result, extensions having a call history with the other party are further searched from the destination information storage table for each caller 51, and extension information (extension number, department name, extension) The user name is arranged, and the information is sent to the extension side, and the information is controlled so as to be displayed on the display of the extension terminal (case B).

In this way, when the information is displayed on the display of the extension terminal, the caller of the extension terminal can recognize the name of the caller (one letter of the name of the caller, initials of the caller name, parameters of the caller, Upon receiving this information, the control unit 14 retrieves and extracts the corresponding party name from the registration table of the caller-specific information, and sends this to the extension side. If there is only one search result on the display of the extension terminal (case A), the extension having a call record with the other party (the caller from the outside line) is further stored in the destination information storage table 51 for each caller. And extension information (extension number, department name, extension user name) in ascending order of frequency searched from the partner information table 52
And sends the information to the extension side, and displays it on the display of the extension terminal (Case B).

The caller of the extension terminal selects and designates a corresponding transfer destination from the displayed contents. In case B, the control unit 14 calls the corresponding extension based on the selection information, and if the called extension responds, the control unit 14 enables the call between the transferred extension and the called extension. When the called extension is off-hook, transfer control is performed to connect the called external line to the called extension.

In case A, the caller of the extension terminal selects and designates a favorite from the candidates from the displayed contents. Based on this information, the control unit 14 searches the extension information having a call history with the corresponding party from the destination information storage table 51 for each caller and sequentially obtains extension information (extension number, department name,
(Extension user name) is arranged and the information is sent to the extension side and displayed on the display of the extension terminal (operation of case B).

The caller of the extension terminal selects and designates a corresponding one from the displayed contents. The control unit 14 controls the transfer of the incoming external line to the corresponding extension based on the selection information. If there is no applicable one, or if you are using a terminal without a display, dial the extension number of the transfer destination (if the extension of the transfer destination is assigned to the function key or one-touch extension key). By operating this key), transfer control for that extension is performed.

When the transfer support function is executed to store the data in the partner information table 52 at the time of taking over the incoming external line or extension, the control unit 14 executes the information of the source of the external line and the current source. The information of the extension that is making the call (and thus the answering extension or the extension of the transfer destination) is stored in the temporary table, and at the stage of restoration after the call is terminated, the The information is arranged and stored in the partner information table 52 as information on the extension destination, and the data is updated. As a result, the caller (source from the outside line) that can be understood from the handover situation at the stage of actually taking over the outside line, the destination of another extension (not the answering extension, It is possible to save the information of the extension which has become the first and save the information in correspondence with the occurrence frequency and to make a table.

The greatest feature of the present system is that it has such a transfer support function. With this transfer support function, even if there is an incoming call from an extension or an outside line and a response is received from any extension telephone terminal, candidates for the transfer destination are listed on the display of the response extension in the first stage of the transfer operation. The call can be displayed, and the call can be transferred to the desired extension simply by selecting the destination specified by the caller from the display.

By providing such a transfer support function, the telephone number can be looked up in the telephone directory and all the digits need to be dialed without the extra time and effort.
The incoming call can be easily transferred to the intended destination. The details of the function will be described below with reference to the flowcharts of FIGS. 6, 7, and 8.

In the system according to the present invention, the information on the normally taken over destination is stored in the destination information storage table 51 for each sender.
In addition, the transfer destination candidates are stored in the partner information table 52, and the transfer destination candidates are extracted and presented with reference to the information in these tables upon transfer. How to store the information in this table is important.

FIG. 6 is a flow chart showing a procedure for storing information of a normally taken over destination in a destination information storage table 51 for each sender and a destination information table 52. The flowchart of FIG. 6A shows a processing route when a user (caller) of the telephone terminal performs an outgoing call to an external line or an internal line from an internal telephone terminal.

That is, when a call operation to an extension or an outside line is performed from the extension telephone terminal, the control unit 14 performs a process other than a normal process for interconnecting extensions or a process for making a call to an outside line. A process of storing the connection destination information in the destination information storage table 51 for each sender and the destination information table 52 is performed. The process of storing the information of the transfer destination in the destination information storage table 51 for each sender and the partner information table 52 is performed by the function of the transfer information storage unit 41.

In this processing, first, the control unit 14 which has detected the call of the extension terminal due to the off-hook of the extension terminal waits for the dial information input from the call extension terminal. If it is dial information for making a call to a telephone or a dial information for making a call to an outside line, the incoming dial information is set in a "temporary table" corresponding to the calling terminal.

That is, the “temporary table” is stored in the storage device 15
This is one of the tables provided therein, in which information on the dial destination (destination) corresponding to the caller (extension number of the call extension) is set (step S31). Next,
In step S32, the current normal calling process is executed based on the dial information from the calling extension.

This is the processing that accompanies the extension call. The called extension is called and the called party is called based on the dialing information of the extension, and the other party answers and enters a call state. Is performed.

The flowchart in FIG. 6B shows a processing route when the communication state is restored. Here, the call ends from the call state, and the control unit 14 of the private branch exchange 1 enters a recovery process. Prior to this process, the control unit 14 of the private branch exchange 1 uses the function of the inherited information storage means 41 to store the inherited information. Enter processing.

In this inherited information storing process, first, it is searched whether or not the information of the other party that the caller first sent is set in the "temporary table" (step S41), and the search result is checked and set. It is determined whether or not there is (Step S42). As a result, if it is not set, the process proceeds to step S44, and the current normal restoration process is performed.

If the result of determination in step S42 is that it is set in the "temporary table", step S4
Then, the process proceeds to step S3, where the information is stored in the destination information table 51 and the partner information table 52, respectively, as the information of the contents to be inherited.

In this way, when a call is made from an extension to an extension or from an extension to an outside line, the extension destination (destination destination) using the extension number of the calling extension and the dial information from the calling extension. Tables 51 and 52 storing information on an extension (call extension) or information on an external line destination (destination destination) -extension (call extension) are created.

As described above, in this system, usually,
Information on an extension and a call partner of the extension or extension along with a call from an extension to an extension or an extension is stored to grasp the relationship. In the present system, the information on the extension to be taken over is determined based on this information when an incoming call is received from an outside line. And
When a specific one is selected from the requested information, it is automatically transferred to the selected extension. This processing will be described below.

When a transfer operation is performed by a key operation or the like on the telephone terminal side, this operation input information is transmitted to the key switch control circuit 211.
From the terminal CPU 209 to the terminal CPU 20.
9 converts the data into data and outputs it to the extension circuit connected to the calling terminal via the interface circuit 206. Thereby, in the private branch exchange 1, the control unit 14 receives information by operating the key switch via the extension circuit.

Then, the control unit 14 recognizes that the input information is "transfer of the incoming call", and controls the incoming call to be put on hold and transferred to the designated extension number. Prior to this, the control unit 14 checks whether the telephone terminal that has performed the transfer operation has a display or not, and if it does not have a display,
Next, the system waits for dial information, and if an extension telephone number is input, controls to transfer to the extension number.

On the other hand, if it has a display, it enters the automatic search mode. In this mode, the control unit 14 uses the information stored in the destination information storage table 51 for each caller and the information stored in the other party information table 52, etc., and frequently communicates with the other party whose telephone number is the source of the call to be transferred. Screen information (candidate destinations) is created for displaying extensions together with selection codes such as selection numbers, etc., by obtaining extensions in order of frequency (displaying the extension number together with the department name, the user name of the extension, etc. together) This can be sent to the extension as transmission information and displayed on the display of the extension terminal.

On the telephone terminal side, the transmission information from the control unit 14 is transmitted to the terminal CPU via the interface circuit 206.
209, and temporarily stores it in the memory 270. And
The terminal CPU 209 controls the LCD control circuit 241 to display this information (transfer destination candidates) on the display 26 in response to the display command. As a result, the information received from the control unit 14 is displayed on the display 26.

Next, the responder using the extension terminal operates the extension terminal to designate and input the selection number (or display position) of the favorite among the displayed transfer destination candidates, or requests the display of the next candidate or the extension number manually. Input operation (such as when there is no candidate).

This operation input information is provided from the key switch control circuit 211 to the terminal CPU 209,
209 converts the data into data and outputs the data to the interface circuit 20.
6 to the extension circuit to which the calling terminal is connected. Thereby, in the private branch exchange 1, the control unit 14 receives information by operating the key switch via the extension circuit.

Then, the control unit 14 recognizes what the input information is, and performs a process according to the content. For example,
When the desired selection code is selected from the telephone terminal side by the selection code of the display contents (the selection code does not have to be displayed in the case of the designation method using the cursor), if it is a favorite extension, the selected extension is called, and the call is called. The automatic transfer to the called extension is performed. If it is the next candidate, the candidate corresponding to the frequency correspondence is further selected, and the display information is created and sent to the telephone terminal side.

If the extension number is manually input, control is performed so that the telephone number is directly transferred to the extension number input from the keyboard from the telephone terminal side. Then, when the other party of the transfer destination answers, the telephone terminal that has performed the transfer operation performs a hook operation such as putting down the handset, so that the held call is connected to the transfer destination extension.

FIG. 7 is a flowchart showing a processing procedure when a person who responds to an incoming call from an outside line or an extension performs a transfer operation for taking over from the extension telephone terminal used for the response. . This will be described with reference to the drawings.

When the transfer operation is performed, the control unit 14 first checks whether or not the telephone terminal used by the respondent has a display with reference to the terminal specification table set in the storage unit 15 (step S51). If, as a result, it is determined that the terminal is "no display", the process proceeds to step S54, and the current transfer process is executed.

On the other hand, if the result of determination in step S 51 is that the terminal is “with display”, step S 51
The process proceeds to step 52, where information on the caller and its destination is used as a parameter to obtain information on the transfer destination candidate from the tables 51 and 52. Then, the process proceeds to step S53, where the information on the obtained transfer destination candidate is displayed. At the same time, the response is sent to the extension circuit connected to the extension to which the response has been made, and is displayed on the display of the telephone terminal of the respondent. Then, the process proceeds to step S54 to execute a normal transfer process.

The above terminal specification table is a table in which the specifications of the connected terminals of each extension are registered, and detailed specifications of the terminal are registered for each extension. This terminal specification table is created by the maintenance terminal 6 and set in the storage device 15 in advance.

The flowchart of FIG. 8 shows that when a person who responds to an incoming call from an extension or an outside line transfers an extension telephone terminal to take over the incoming call, instead of dialing the transfer destination, From a plurality of transfer destination candidates displayed on the display 26 of the telephone terminal 2, for example, a cursor operation using the cursor key 24 a,
Alternatively, a processing path when one transfer destination is selected by a simple operation that anyone can understand, such as a one-touch operation with the function key 25 or the like, is shown.

Here, in step S61, the information of the transfer destination selected by the above selection operation is obtained, and it is checked whether the information of the transfer destination can be obtained next and whether the selection operation is correct (step S62). If it is determined that the information of the transfer destination could not be obtained, the present process is terminated and the next operation by the responder is awaited. If it is determined in step S62 that the information of the transfer destination has been obtained, the process proceeds to step S62.
Proceeding to 63, the call of the caller is transferred to the extension designated by the above selection operation based on the obtained information.

As described above, from an ordinary line to an internal line,
Or accumulate the information of outgoing calls from the extension to the outside line, and know the correspondence with each extension's destination (the destination of the extension or the destination for the outside line) and the frequency of calls between them, so that it can be transferred. By accumulating information as
When the person who answers the subsequent incoming call performs a transfer operation to take over, the candidate of the transfer destination is obtained from the stored information, displayed on the display of the telephone of the respondent, and By selecting a transfer destination extension by a simple operation, the call of the caller can be automatically transferred to the selected extension.

The present invention is not limited to the embodiment described above and shown in the drawings, and it is needless to say that the present invention can be appropriately modified and implemented without departing from the scope of the invention. For example, in the above-described embodiment, the embodiment of the private branch exchange connected to a normal public line has been described.
Network services are provided, and according to this, a call setup message is sent from the network to the receiving side when an incoming call is generated. Since the call setting message includes the information of the subscriber number (telephone number) of the caller, the call setting message is used to accumulate the information of the destination information storage table for each caller and the other party information table.
When an incoming call arrives, the caller's subscriber number in the call setup message is used as a key to refer to the information in the destination information storage table for each caller and the destination information table to automatically display the transfer destination candidate, It is also possible to make one call incoming.

In the present invention, both the sender-specific destination information storage table 51 and the partner information table 52 are created and used in the above-described embodiment. It is feasible. Also,
The present invention is applicable to all switching systems having a transfer function.

Further, in the case of a system in which a call is transmitted to a plurality of extensions simultaneously by transmitting to a representative number, multi-DN (secondary), or the like, a call is received from information stored and information of a transmission source. Check if there is an extension that is related to the caller among the extensions that are present, and if a related extension is found, call the extension with priority (for example, first ring this extension first ( It is also conceivable to provide a function of ringing a ringing tone and ringing another extension if no response is made for a certain period of time.

In this case, if there is an incoming call, the extension related to the source is ringed first from the information of the source, so that the extension responder can take over to another extension user,
It is possible to suppress the occurrence of a situation such as transfer, thereby obtaining an effect of further improving the serviceability for the user.

It should be noted that Multi DN (Multi apperance DN)
Usually, an extension number (called a Prime DN) set for each telephone is set to another telephone (this is called a Secondary DN) and one telephone number is assigned to a plurality of telephones. Refers to the function to be shared. For example, telephones A, B, C,
D is present and telephone A has an extension number (Prime DN) of "200"
Number, the secondary (Secondaly DN) is "201", the telephone B has the extension (Prime DN) "201", the secondary (Secondaly DN) is "200", and the telephone C has the extension (Prime DN) Is “202”, Secondary
DN) is "200" and "201", and telephone D has extension number (Prime DN) "203" and secondary (Secondaly)
DN) is set to "200", and when an incoming call occurs at extension "200", telephones A, B, C, and D
Ringing, and when a call arrives at extension "201", telephones A, B, and C ring (Ring). When a call arrives at extension "202", only telephone C The control of ringing is performed. Also, when making a call, it is possible to use a Secondary DN in addition to the Prime DN. For example, the telephone A can select and use the "201" extension in addition to the original "200" extension. That's it. Further, the same applies to the hold transfer function, and any one of the Prime DN and the Secondary DN can be captured from an extension telephone to which the same extension number as the hold extension number is assigned. For example, in the above example, telephone A
Holds the call that was talking on the "200" extension, telephone B can catch the held call on the "200" secondary (Secondary DN) (hold transfer).

[0097]

As described above, according to the present invention, transmission information from an extension to an extension or from an extension to an external line is normally stored, and a destination to an extension or an external line and a destination to which the extension has been transmitted are determined. Relationships are stored in a frequency-aware manner,
When a user of a certain extension terminal (responder) who responds to an incoming call from an extension or outside line performs a transfer operation for handover, the above information that is normally accumulated is used. The candidate of the transfer destination is requested, and the information of the obtained transfer destination candidate is displayed on the display of the terminal used by the respondent. When the respondent selects one of the displayed contents, the selection is made. In this case, the caller's call is forwarded to the designated transfer destination, so that the person who answers the incoming call can take over the incoming call to another extension as in the past. There is an advantage that it is not necessary to perform the troublesome work of checking the number and dialing.

Further, when the caller performs a call operation by utilizing the stored data, the information of the person who will be the final caller is displayed on the display of the terminal used by the caller. There is also an advantage that it is possible to directly retransmit the selected party from the displayed content to the selected party by a simple operation.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining an embodiment of the present invention,
FIG. 1 is a block diagram showing a schematic configuration of a private branch exchange according to the present invention.

FIG. 2 is a diagram for explaining an embodiment of the present invention,
The figure which shows the function structure of the control part 14 of the private branch exchange by this invention.

FIG. 3 is a diagram for explaining an embodiment of the present invention,
The figure which shows the example of a structure of each table of the memory | storage part 15 of the private branch exchange by this invention.

FIG. 4 is a diagram for explaining an embodiment of the present invention,
The figure which shows the external appearance of the multifunctional telephone (electronic key telephone) connected as one of extension terminals to the private branch exchange by this invention.

FIG. 5 is a diagram for explaining an embodiment of the present invention,
FIG. 5 is a block diagram showing a configuration example of the multifunctional telephone in FIG. 4.

FIG. 6 is a diagram for explaining an embodiment of the present invention,
5 is a flowchart showing the operation of the private branch exchange according to the present invention.

FIG. 7 is a diagram for explaining an embodiment of the present invention,
5 is a flowchart showing the operation of the private branch exchange according to the present invention.

FIG. 8 is a diagram for explaining an embodiment of the present invention,
5 is a flowchart showing the operation of the private branch exchange according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Switch body 2 ... Telephone terminal body 2-1 to 12-n ... Extension terminal (extension telephone etc.) 3-1 to 13-m ... Office line (subscriber line) 6 ... Maintenance terminal 12-1 to 12- n: Office line circuit 13-1 to 13-m: Extension circuit 14: Control unit 15: Storage unit 21: Handset (handset) 22: Hook mechanism 23: Dial mechanism (dial key) 24: Function key 24a: Cursor key 25: display lamp (LED; light emitting element) 26: display 41: inherited destination information storage means 42: transfer destination candidate calculation means 43: transfer destination candidate information display means 44: transfer destination selection means 45: transfer means 51 … Recipient information storage table by sender 52… Party information table

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04M 3/42-3/58 H04Q 3/58-3/62

Claims (3)

(57) [Claims] 1. A private branch exchange system accommodating a plurality of extensions and outside lines, performing exchange connection between the extensions and outside lines, and enabling a call to be transferred between extensions by a transfer function. A storage function for storing the relationship between the obtained source and destination as information, and when transferring this incoming call to another extension from an extension responding to an incoming call from an extension or an external line, the information stored in the storing function is also stored. A control function for obtaining information on an extension related to the source of the incoming call and displaying the information on the extension that has responded, based on the selection information from the response extension, an extension corresponding to the selection information Control means having a transfer function of controlling the incoming call to be transferable; display means for displaying display information from the control means on the extension; A telephone terminal comprising an operation means for selecting and operating one of the information displayed on the terminal, and a terminal control means for giving the information selected by the operation means as selection information to the control means. And private branch exchange system. 2. A private branch exchange system accommodating a plurality of extensions and external lines, performing exchange connection between the extensions and external lines, and enabling incoming calls to be transferred between extensions by a transfer function. The relationship between the source and destination obtained when making an outgoing call to an extension or an outside line, and the information of the extension that was finally called with the received extension or the received outside line by transferring the received extension or the received outside line And a storage function for storing the incoming call as a relationship with the incoming call destination. When transferring the incoming call to another extension from the extension responding to the incoming call from the extension or the external line, the incoming call extension based on the information stored in the storing function Alternatively, a control function for obtaining information on an extension related to the source of the received external line and controlling the obtained information to be displayed on the responded extension, Based on the selection information from the extension, a control unit having a transfer function for controlling the incoming call to be transferable to the extension corresponding to the selection information is provided, and display information from the control unit is provided on the extension. A telephone terminal comprising: display means for displaying; operation means for selecting and operating one of the information displayed on the display means; and terminal control means for giving the information selected by the operation means to the control means as selection information. A private branch exchange system characterized by being connected and configured. 3. The transfer means according to claim 1, wherein the control means specifies the relationship between the call source and the call destination by inputting designation information for each call source of the received extension or the received external line from the operation means and giving it to the control means. 2. The method according to claim 1, wherein
3. The private branch exchange system according to claim 2.