JP3447878B2 - Forwarding method of call forwarding to group representative number and telephone switching apparatus - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the technical field of telephone exchanges such as a private branch exchange (PBX) and a dealing telephone system, and more particularly to a terminal device accommodated in these telephone exchanges. A method for automatically transferring an incoming call to a group to which a terminal device belongs by setting to call forwarding, and a method for transferring an incoming call to a group representative number and a telephone capable of forwarding an incoming call to the group representative number. Regarding switching equipment.

[0002]

2. Description of the Related Art Conventionally, as a call transfer method for automatically transferring a specific incoming call to a specific destination, a method of transferring an extension number of each terminal device to a specific destination or a trunk designated in advance There was a method to transfer an incoming call to a specific destination. However, no method has been proposed in which an extension group is configured by a plurality of terminal devices and an incoming call to an extension number (group representative number) commonly used in the group is forwarded.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and when an extension group is set to call forwarding, a party to whom an incoming call to the group representative number is set in advance is set. An object of the present invention is to provide a call forwarding method for forwarding an incoming call to a group representative number that can be forwarded forward, and a telephone exchange device capable of performing a forward forwarding of an incoming call to a group representative number.

[0004]

In order to solve the above-mentioned problems, in the call forwarding method according to the present invention, a plurality of terminal devices are provided.
And the line control device of the plurality of terminal devices telephone exchange apparatus comprising a line control unit that houses the, can you set and the group representative number to be transferred in advance of the target, the other party to transfer the incoming call went there , by the terminal device, it issues an absence message indicating an absence by operating the handle's telephone exchange
Equipment recognizes the absence of the group, and to forward to the destination which is set an incoming call to a representative number of the group. Further, the issued absent message from the terminal device, circuit switching device is adapted to perform a call forwarding notification to the incoming call that it is absent in all other terminals in the same group.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a functional block diagram showing the concept of a telephone exchange device (telephone exchange equipment) capable of transferring an incoming call according to the present invention. Telephone exchange apparatus according to the present invention includes a plurality of terminal devices 1, made from the line control unit 3 for accommodating a plurality of terminals, telephone exchange capable of constituting a group of one or a plurality of terminal devices It is a device. The terminal device 1 has an unattended transfer function setting / cancellation input means 154 for inputting setting or cancellation of the unattended transfer function.
A calling information generation function 100 that generates calling information, a group number storage function 121 that stores a group number to which the self belongs, an absent group number in the absence reply information 56 from the line control device 3, and the self. A group number match detection function 101 that detects a match of group numbers and a call forwarding function that displays the setting or cancellation status of the call forwarding function.
It has a constant status display means 153. Line control device 3
Is a group number 52 based on the calling information 55, and storage means 36 for storing data indicating the relationship between the group representative number 51, the group number 52, the absent transfer destination 53, and the setting or cancellation state 54 of the absent transfer function. Set or release the corresponding call forwarding function The call forwarding setting that rewrites the status data
Constant / cancellation data rewriting function 301, absent reply information creating function 300 for creating absent reply information indicating the setting / cancellation status of the absent transfer function, and registered call transfer for an incoming call to a group to which the absent transfer function is set It has a transfer function 302 for transferring first.

[0006]

2 is a block diagram of a telephone exchange facility according to the present invention. In the telephone exchange equipment according to the present invention, the terminal device 1 and the line control device 3 are connected to, for example, an ISDN line (2B +
D) Connected by 4. Terminal equipment (TE
L) 1 is a central processing unit 11 that controls the entire terminal device 1.
A storage device 12 for storing control programs / data, station data, etc., a display device 13 for displaying line status, dial number, etc., a display control device 14 for controlling the display device 13, a dial, etc. Input device 15 for inputting, and input control device 16 for controlling the input device 15
And a line interface device 17 for interfacing with the line 4, and a speech path device 18 for controlling a voice signal. These are interface devices (BUS I
/ F) 19 are connected to each other. Further, the line interface device 17 and the communication path device 18
An analog / digital converter 20 for performing analog / digital conversion of voice is connected between the and. In addition, the terminal device 1 is provided with a speaker 21 for outputting a ringing sound, an input confirmation sound, and the like, and a handset 22 for making a call, and these are connected to the speech path device 18.

The line control unit (LCU) 3 is a time division switch (TSW) 3 that performs call switching (switch connection).
1 is provided, and the time-division switch 31 has a line (2B +
D) Line circuit 32 for interfacing with 4
And a trunk 32 for interfacing with the line network are connected, and a central control unit 35 and a main storage unit 3 are connected.
6 are connected via a control bus 34. Further, a maintenance console 37 is connected to the central control unit 35, whereby various data can be registered and changed.

FIG. 3 shows the overall configuration of the telephone exchange equipment according to the present invention, and shows one situation in which the group representative number is being forwarded unattended. In this example, the terminal equipment (TE) is used.
L) 1a and 1b form group 01, and group 01
Accommodates the representative number 3000. Similarly, the terminal devices 1c and 1d form the group 02, and the group 0
2 accommodates the representative number 3100. Further, the trunk (TRK) 33 a~ 33 c, respectively office line or PBX extension or, like a dedicated line is connected. In this example, group 01 is set during absence and group 02 is not set during absence. Therefore, when an incoming call arrives at the representative number 3100, the group 02 is not absent, so that the terminal devices 1c, 1
The incoming call is displayed in d. On the other hand, in the group 01, the absence message (absence setting) is issued from the terminal device (TEL) 1a. The line control unit (LCU) 3 receiving this absent message, together with the data for setting the group to all the accommodated terminal devices, also includes the absent message (absent
All the terminal devices of the group 01 which issued the reply information) and received this absent message display absent. If the incoming call arrives at the representative number of group 01, number 3000, in the state of being set in this absence, the terminal device (TEL)
No incoming call is sent to 1a or 1b, and the call is automatically transferred to the transfer destination registered in advance.

FIG. 4 is a perspective view showing an example of the external appearance of the terminal device (TEL) 1 accommodated in the telephone exchange facility according to the present invention. The terminal device (TEL) 1 includes a display device 13 for displaying dials and various data, and a line key group 15
1, a function key group 152, and a dial key (numeric keypad)
153, a speaker 21 that outputs a ringing sound, an input confirmation sound, and the like, and a handset 22 are provided.

FIG. 5 is a diagram showing a detailed configuration example of the board surface of the terminal device (TEL) 1 connected to the telephone exchange facility according to the present invention. In FIG. 5, the line key group 151 accommodates a station line, a PBX extension line, a leased line, etc., and a group representative number (for example, 3000, 3100, 320).
0) is housed. Further, the function key group 152 includes keys (transfer, transfer) for realizing various functions of the system.
Holds, redials, absences, etc.) are accommodated. These line key group 151 and function key group 152 have LEDs.
A status display device 153 such as the above is attached, and various status displays such as an incoming call display and a display as to whether the key is valid or not can be performed. Of the function key group 152,
The absence transfer key 154 issues a message of absence to the line control unit (LCU) 2 or a message of canceling the set absence. The status indicator 153 associated with the absence transfer key 154 is used for the line control unit (LCU) 2
Displays that you are out of office by an out of office message sent from. Further, cancellation of the absence setting is realized by pressing the absence transfer key 154 during the absence display.

FIG. 6 shows a storage device 3 of the line control unit (LCU) 3 for realizing the unattended transfer system according to the present invention.
An example of the data structure stored in 6 is shown. FIG. 6 (A)
Shows the structure of the registration data 51 of the group representative number.
In the registration data of the group representative number, the group representative number for each serial number and the number when a plurality of group representative numbers are registered are registered. The group representative number represents the group representative number (for example, 3000) itself, and the number represents the number when a plurality of the same group representative numbers are registered. FIG. 6B shows group number registration data 52 in which a group representative number and a group number are associated with each other, and the group number is a serial number (for example, 0
Group representative number corresponding to 1) (for example, 3000)
Indicates the group number to which the number belongs (for example, 01). FIG. 6C shows absent transfer destination data 53 in which a group number is associated with an absent transfer destination, and transfer destination data (telephone number) is registered corresponding to the group number. FIG. 6D shows an absent transfer setting data 54 indicating whether or not the group represented by the group number is in the absence transfer setting.
Is set, and either absent or released is set corresponding to the group number.

FIG. 7 shows a structural example of a message between the terminal unit (TEL) 1 and the line control unit (LCU) 3 for realizing the call forwarding system according to the present invention. FIG. 7A shows the structure of calling information 55 which is a message issued from the terminal device 1 to the line control device 3. The calling information 55 is a calling information identifier 5 indicating the contents of the calling information.
5a, a content length 55b indicating the length of data, a call type 55c indicating whether or not a call is for setting or canceling call forwarding, other call data, and setting or canceling call forwarding. The absence type 55d indicating whether or not to perform the call, and the absence group number 55e indicating the group number to which the terminal device that issued this call information belong.

The line control unit (LCU) 3 uses the calling information 5
When receiving 5, the message is identified by the call information identifier 55a, the message is related to the call forwarding by the call type 55c, and the call forwarding is set or the call forwarding is canceled by the call type 55d. Then, the absent group number 55e identifies the group number to which the terminal device 1 that issued the call information 55 belongs.
Based on the above information, the line control device 3 sets an incoming call transfer for forwarding an incoming call to the corresponding group to a predetermined forwarding destination, or cancels the incoming call transfer setting that has been set.
Next, the line control device 3 issues the absence reply information 56 to all the accommodated terminal devices 1a to 1d.

FIG. 7B shows an example of the structure of absence reply information 56 which is a message issued from the line control device 3 to each of the terminal devices 1a to 1d. Absence reply information 56
Is an absent reply information identifier 56a for identifying the message.
A content length 56b indicating the length of the message, an absence type 56c for identifying whether the absence transfer is set or canceled for each terminal device, other data, and a group to which the absence reply information is targeted. And an absent group number 56d indicating a number.

Each terminal device 1 accommodated in the line control device 3
Upon receiving the absence reply information 56, the a to 1d identify the message by the absence reply information identifier 56a, identify whether the absence transfer is set or cancel the absence transfer by the absence type 56c, and target by the absence group number 56d. Recognize the group number. The terminal device 1 determines whether or not the group number is the group number to which the terminal device 1 belongs, and when it is the group number to which the terminal device 1 belongs, the function button 154 on the terminal device 1 is displayed based on the content of the absence type 56c. The lamp 153 is turned on or turned off.
When the group number is different from the group number to which it belongs, the individual absence response information 56 is ignored.

Next, the transfer operation of the missed transfer method according to the present invention will be described in detail with reference to FIGS. The following is the group representative number “3000” of the group number “01” in which the terminal devices 1a and 1b shown in FIG. 3 are accommodated.
An example is the case where an incoming call to a call is forwarded. First, from the maintenance console 37 in advance, the group representative number (in this example, “3000
No. ”, the group number to which the number belongs (“ 01 ”in this example) and the transfer destination are stored and stored in the main storage device 36 of the line control device 3. These data are stored in FIG. )-(D).

When attempting to perform an absent transfer, when the operator of the terminal device 1a belonging to the group number "01" presses the absent transfer key 154, the terminal device 1a sends the absence control 55d to the line control device 3. The calling information 55 having the "absence setting" and the absence group number 55e of "01" is issued.

Upon receiving the call information 55, the line control device 3 refers to the group number registration data 52 based on the absent group number 55e, and based on this data, the group representative number registration data 51 and the absent registration destination transfer data. 53, it is searched whether the group representative number and the transfer destination are registered for the group "01". If the group representative number and the transfer destination are not registered as a result of the search, it is considered that the transfer is not possible and the call information 55 is ignored and the absence transfer process is not performed. If the group representative number and the transfer destination are registered as a result of the search, FIG.
Group "0" of the absence transfer setting data 54 shown in (D)
The absence / release data of 1 ”is set to“ absent ”to enable the absence transfer, and the absence type 56c is“ absence set ”for all the terminal devices 1a to 1d, considering that the absence transfer is possible, The absence reply information 56 whose absence group number 56d is "01" is issued.

The terminal device 1 which has received the absence transfer information 56
a to 1d are the absent group numbers 56 transferred respectively.
Check whether d and the group number to which it belongs match, and if they do not match, ignore them. If they match, absent transfer key 1
The status indicator 153 associated with 54 is turned on to display that the call forwarding function is being set. This operation for setting the call forwarding function can be performed from any terminal device in the same group.

It is assumed that an incoming call arrives at the group representative number "3000" contained in the group "01" under the setting of the call forwarding function as described above. The line control device 3 first checks the serial number corresponding to the group representative number “3000” by referring to the group representative number registration data 51, finds “01”, and further refers to the group number registration data 52 to refer to the serial number. The group number (here, "01") to which the group representative number "3000" belongs is searched based on "01". Further, the absence transfer setting data 54 is referred to determine whether or not the absence transfer is set for the group. If the absence transfer is set, the absence transfer destination registration data 53 is referred to and the corresponding transfer is performed. Detects the other party and, according to this, the group representative number ”
Incoming calls to "3000" are automatically transferred to the call forwarding destination.

Next, the case of canceling the set absence transfer state will be described. When the operator of the terminal device 1b of the group "01" presses the absence transfer key 154 which is displaying the absence transfer, the terminal device 1b indicates that the absence type 55d is "5" for the line control device 3.
The calling information 55 having "absence cancellation" and the absence group number 55e being "01" is issued. The line control device 3 receiving this calling information 55 recognizes the group number in the same manner as when the absence transfer setting is made. , The absence / release data of the group “01” in the absence transfer setting data 54 is set to “release” to release the absence transfer state and all the terminal devices 1a.
Absence reply information 5 in which the absence type 56c is "absence release" and the absence group number 56d is "01" for 1d
Issue 6. The terminal devices 1a to 1d that have received the absence response information 56 compare the absence group number 56d with the group number to which they belong, and if they do not match, ignore them.
If they match, the status indicator 153 associated with the absence transfer key 154 is extinguished to display that the absence transfer function has been canceled. This operation for canceling the setting of the call forwarding function can be performed from any terminal device in the same group.

[0022]

As described above, according to the present invention, by pressing the absent transfer key in any one of the groups formed by a plurality of terminal devices, data transmission / reception is performed with the line control device and the entire group is transmitted. Can be absent. In addition to this, by assigning a group number to the group representative number and setting the transfer destination corresponding to the group number, incoming calls to the group representative number can be forwarded unattended. became. Also, not only the terminal device for which the absence setting has been made, but also any one of the groups can send / receive data to / from the line control unit by pressing the absence transfer key that is displaying the absence, and cancel the absence setting for the entire group. You can also do it.
In this way, it becomes possible to forward the incoming call to the group representative number, which was impossible in the past.

[Brief description of drawings]

FIG. 1 is a functional block diagram showing the concept of a telephone exchange device capable of transferring an incoming call according to the present invention.

FIG. 2 is a block diagram showing the concept of telephone exchange equipment according to the present invention.

FIG. 3 is an overall configuration diagram of a telephone exchange facility according to the present invention.

FIG. 4 is an external view of a terminal device connected to a telephone exchange facility according to the present invention.

FIG. 5 is a diagram showing an example of a board surface of a terminal device connected to the telephone exchange facility according to the present invention.

FIG. 6 is a diagram showing an embodiment of a data configuration on the line control device side for realizing the missed transfer method according to the present invention.

FIG. 7 is a diagram showing an embodiment of a message structure between a terminal device and a line control device for realizing a call forwarding method according to the present invention.

[Explanation of symbols]

1 Terminal device (TEL) (1a-1d) 3 line control unit (LCU) 4 lines (2B + D) 11 Central processing unit 12 storage devices 13 Display 14 Display control device 15 Input device 16 Input control device 17 Line interface device 18 speech path device 19 Interface device (BUS I / F) 20 analog / digital converter 21 speakers 22 Handset 31 Time Division Switch (TSW) 32-line circuit (17a to 17d) 33 Trunk (18a-18c) 34 control bus 35 Central control unit 36 main memory 37 Maintenance console 51 Group representative number registration data structure 52 Group number registration data structure 53 Unattended transfer destination registration data structure 54 Unattended transfer setting data structure 55 Calling information data structure 56 Absence reply information data structure 100 Calling information creation function 101 Group number match detection function 151 line keys 152 Function keys 153 numeric keypad 153 Status indicator 154 Call Transfer Key 300 Absence reply information creation function 301 Unattended transfer function setting / cancellation data rewriting function 302 Transfer function

Front page continued (58) Fields surveyed (Int.Cl. ⁷ , DB name) H04M 3/42-3/58 H04Q 3/58-3/62

Claims (3)

(57) [Claims] [1 claim: a plurality of terminal devices consists of a line control unit which accommodates a plurality of terminal devices, the absence of an incoming call in a telephone exchange capable of constituting a group of one or a plurality of terminal devices in the transfer method, the line control device, have a call forwarding feature to forward the incoming call of the group to the group representative number is a number that commonly used in the automatic preset destination, the call forwarding function The call forwarding function is set
A call forwarding method for incoming calls, which is characterized in that the information is displayed on the terminal device in the specified group . 2. A plurality of terminal devices and a plurality of terminal devices are stored.
End of one or more units
A telephone exchange that can form a group of end devices
In the exchange device, the terminal device inputs the setting or cancellation of the call forwarding function.
Input means, function to generate call information, and own
The function to store the group number and the error from the line controller
The absent group number in the presence / absence information and the group to which self belongs
Function to detect a match of the
Or having a display means for displaying a release state.
Telephone exchange equipment. 3. A plurality of terminal devices and a plurality of terminal devices are stored.
End of one or more units
A telephone exchange that can form a group of end devices
In the exchange device, the terminal device inputs the setting or cancellation of the call forwarding function.
Input means, function to generate call information, and own
The function to store the group number and the error from the line controller
The absent group number in the presence / absence information and the group to which self belongs
Function to detect a match of the
Or a release means for displaying the release status, the line control device, a storage means for storing data indicating the relationship between the group representative number, the group number, the absence transfer destination and the setting or release status of the absence transfer function, Set the function to rewrite the setting / cancellation status data of the call forwarding function corresponding to the group number based on the calling information, the function to create the call absence information indicating the setting / cancel status of the call forwarding function, and the call forwarding function And a function of transferring an incoming call to a registered group to a registered transfer destination.