JPH04362897A - Incoming call display system in telephone subscriver station subscriber unit - Google Patents

Abstract

PURPOSE:To obtain a good operative incoming call display system by using an extension equipped with the main unit of a private branch switch and a display unit. CONSTITUTION:The main unit 1 of a private branch switch is provided with a time division switch circuit 3, an IF 11 for extension, an I/F 7 for circuit, an IF 27 for computer, a common trunk 19, a program memory 25, and a CPU 13. The main unit 1 classifies a plurality of line wires into a plurality of groups in terms of application type or the like, attributes of circuit group such as domestic customer, international circuit, and branch office are defined for each group, and signal receiving condition is managed for each circuit. Further, the extension 17 is equipped with a display, when data to be displayed is sent from the main unit 1 of the private branch switch and there is a incoming circuit available, to display the attribute of a group to which the circuit available belongs. A TDSW 3, when carrying out program processing by the CPU 13, divides the incoming circuit to the extension, and stores program for incoming call display and other programs, and various types of information in the program memory 25. Computer 31 executes asynchronous communication mutually with the main unit 1 of the private branch switch.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incoming call display system in telephone subscriber equipment, and more particularly to an incoming call display system incorporated in telephone subscriber equipment using a private branch exchange and an extension telephone.

0002

[Prior Art] Telephone subscriber equipment used for telephone reception services, that is, incoming call services, includes a button telephone device as a private telephone facility accommodating multiple lines, and an automatic call distribution (ACD) function. One that uses a private branch exchange is well known.

[0003] In the button telephone device, an extension telephone is used, in which the number of buttons with lamps corresponding to each line is the same as the number of lines, and the operator can tell the incoming call status of each line by lighting the lamp of each extension telephone. When the operator voluntarily presses a button,
Each extension telephone is completely free to capture any incoming call line.

[0004] When using a private branch exchange having an automatic incoming call distribution function, incoming lines are automatically changed so that the loads on multiple reception desks (incoming business extension telephones) are equalized. In this case, connections are forcibly distributed evenly to each reception console, and incoming lines are automatically connected to each reception console in the order in which incoming calls have been received for a long time.

[0005]

[Problems to be Solved by the Invention] In the key telephone device as described above, it is necessary to provide each extension telephone with the same number of buttons with lamps as the number of accommodated lines. It is necessary to provide a large number of buttons with lamps on the extension telephone, and there is a limit to the number of buttons equipped with lights, depending on the size of the telephone, operability, etc.

[0006] Furthermore, when a call is received from multiple lines using one representative number, the operator cannot know in advance which of the multiple lines the line that is about to be captured is. Which line to respond to is left to the operator's button selection, and responses are not necessarily made in the order in which calls have been received for a long time. Therefore, there is a risk that the waiting time of a line that has been receiving calls for a long time will be increased unnecessarily.

[0007] On the other hand, in the case of using a private branch exchange having an automatic incoming call distribution function, the above-mentioned problems with key telephone equipment do not occur, but the distribution connection of the incoming line to each reception desk is difficult. Since the decision is made unilaterally by the private branch exchange, a private branch exchange with an automatic call distribution function is not suitable for incoming calls where there are different types of incoming lines and the operator selects one and responds voluntarily. A button telephone device may be better.

[0008] The present invention has been made by focusing on the above-mentioned problems in the conventional incoming call type business telephone subscriber equipment. An incoming call display in a telephone subscriber device that enables incoming call operations such as spontaneous response to a telephone call to be performed easily even when the number of lines is large, without using an extension telephone having many lamp buttons. The purpose is to provide a system.

[0009]

[Means for Solving the Problems] According to the present invention, a plurality of outside lines are grouped into a plurality of groups, attributes are defined for each group, and the incoming call status of each line is monitored. Using a private branch exchange main device to manage and an extension telephone connected to the private branch exchange and equipped with a display device that displays data by transmitting display data from the private branch exchange, when there is an incoming line, the group to which the line belongs is determined. This is achieved by an incoming call display system in a telephone subscriber equipment, characterized in that the attributes of the above are displayed on the display.

0010

[Operation] According to the incoming call display system in the telephone subscriber equipment as described above, a plurality of outside lines are grouped according to the type of business, etc., and each line group is divided into groups for domestic customers and international customers. Attributes such as line group name such as line and branch are defined, and when a call is received, attributes such as the line group name of the line group to which the incoming line belongs are displayed on the display of the extension telephone.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows an example of the hardware configuration of a telephone subscriber unit implementing an incoming call display system according to the present invention. The telephone subscriber equipment includes a private branch exchange main unit 1 . The private branch exchange main device 1 includes a time division switch circuit (TD
SW) 3, and the time division switch circuit 3 is individually connected to a line interface 7 via a highway 5 for digital signal transmission for each line on one side, and is connected to a line interface 7 on the other side for digital signal transmission for each extension. It is individually connected to the extension interface 11 by the highway 9 for the CPU 1.
3, the incoming lines are distributed and connected to the extension lines.

The line interface 7 has a main distribution rack (MD
F) A plurality of telephone lines (office lines) Ln are each individually connected by 15, and the line interface 7 converts the analog voice signal of the telephone line Ln into a digital voice signal in order to input the signal to the time division switch circuit 3. It is supposed to be done.

A plurality of extension telephones 17 are individually connected to the extension interface 11 through a plurality of extensions Lp, and the extension interface 11 transfers digitized voice signals and control data signals to and from the extension telephone 17. It is now possible to send and receive data to and from

A common trunk circuit 19 having a function of generating a hold tone, ringback tone, busy tone, etc. is connected to the private branch exchange main unit 1 by a highway 21 for transmitting digital signals.

The time division switch circuit 3, extension interface 11, memory 25, and computer interface 27 are connected to the CPU 9 via an internal bus 23.

The memory 25 stores a program for implementing the incoming call display system according to the present invention, other programs for private branch exchange, and various data. A computer 31 is connected to the computer interface 27 via a serial transmission line means 29. The computer 31 is a general computer that includes a CPU, an internal memory, an external memory, an input means such as a keyboard, an output means such as a CRT, etc., and this and the private branch exchange main device 1 communicate with each other by asynchronous communication using RS-232C or the like. It is supposed to be done.

As shown in FIG. 2, the extension telephone 17 includes a CPU 33, a memory 35 for storing system programs for the operation of the CPU 33, display image data, and various data, an extension interface 37, and a voice interface 39. , an input/output control circuit 41 , and an LCD display circuit 43 , which are connected to each other by a bus 45 .

The extension interface 37 is connected to the extension Lp and is adapted to transmit and receive voice signals and control data signals to and from the private branch exchange main device 1.

A handset and a speaker 47 are connected to the audio interface 39, which performs analog/digital conversion between analog audio such as telephone calls and ringing tones and digital signals, and input/output switching.

The input/output control circuit 41 includes a 3-key keypad.
A PB switch 49 including a ×4 PB switch and a one-touch dial key is connected to the PB switch 49.
It is designed to convert the key signal from the main unit into a signal to be sent to the CPU 33.

A liquid crystal LCD 51 is connected to the LCD display circuit 43 as a display device, and this is connected to the CPU 33.
A display data signal is given to the LCD 5 according to the display data signal.
It is designed to control the display contents of 1.

The LCD 51 is capable of displaying characters in about 2 to 5 lines. For example, the first line displays the date,
The time and extension number are displayed, and the line group name of the incoming call is displayed on the third and fourth lines (see FIG. 9).

In the incoming call display system according to the present invention, a line definition table, a line group definition table, a line queue list in order of arrival, and a line group waiting list are prepared for displaying incoming calls. Using this, multiple lines Ln are grouped in advance into multiple groups, attributes such as an extension group name are defined for each group, and when there is an incoming line, the display data is sent from the private branch exchange main device 1 to the extension. The information is transmitted to the telephone set 17, and the defined attributes of the line group to which the incoming line belongs are displayed on the LCD 51.

Next, the definitions and roles of each of the above-mentioned tables will be explained.

As illustrated in FIG. 3, the line definition table defines the line group to which each telephone line Ln belongs, using a unique line number for each telephone line Ln.

As illustrated in FIG. 4, the line group definition table defines the priority of incoming connection and the line group name for each line group of each telephone line Ln. The priority is 0 is higher, 225 is the lowest, 25
It is set in 6 stages. The line group name is displayed on the LCD 51 of the extension telephone 17, and in this example, it is GRP-1, GRP-2, etc. The terminating line queue list, which may be the specific name of the terminating source, is shown in Figure 5.
As exemplified in , the priority of incoming calls is managed using the line number of the incoming line. In the incoming line queue list, when an incoming call occurs, the line number of the incoming line is registered at the end of the queue, and when the incoming call disappears or an extension response is made, the line number of the incoming line is removed from the queue. will be deleted.

As shown in FIG. 6, the line group waiting order list manages the incoming order of the incoming line according to the line group to which the incoming line belongs, and this is based on the incoming line queue list and the line definition. The queues are created by referring to the table, and are further sorted using the priority of each line group defined by the line group definition table as a sort key, and the waiting order of the line groups is rearranged.

The above-mentioned line definition table and line group definition table may be downloaded from the computer 31 to the private branch exchange main unit 1 via the computer interface 27.

The incoming call display program includes an LCD display processing program on the private branch exchange main device side, an LCD display processing program on the extension telephone side, and a response processing program by the private branch exchange main device and the extension telephone.

FIG. 7 shows an example of the LCD display processing flow by the LCD display processing program on the private branch exchange main device side. This program is repeatedly executed by time interrupts, etc., and all the calls currently in the waiting state are The incoming lines are listed in chronological order according to the line group to which each incoming line belongs, and a line group waiting order list as shown in FIG. 6 is created (step 1).
0). Next, the line group waiting order list is sorted using the priority of each line group defined by the line group definition table as shown in FIG. 4 as a sort key (step 20), and the waiting order of the line groups is rearranged. . As a result, a line belonging to a line group with a high priority is ranked higher even if the incoming call order is low.

Next, based on the line group waiting order list sorted as described above and the line group definition table, a predetermined number of line groups, for example 6 line groups, above the first line group in the line group waiting order list are selected. Write the corresponding line group name to the display data buffer area of the CPU 13 or memory 25 (
Step 30).

Next, the display data written in the display data buffer area is transmitted to all extension telephones 17 (step 40).

FIG. 8 shows an example of the LCD display processing flow by the LCD display processing program on the extension telephone side. This program is also repeatedly executed by time interrupts, etc., receives display data from the private branch exchange main device 1 (step 100), and receives a predetermined number of lines above the first line group in the line group waiting order list as shown in FIG. ,
For example, the line group name corresponding to each of six line groups is displayed on the LCD 51 (Step 1
10). An example of display by this LCD 51 is shown in FIG. The line group names are displayed in the order of line groups to which lines that have received calls for a long time belong. This allows the operator to know the names of the line groups to which the incoming lines in the waiting state exist, in the order of the lines to which the lines to which incoming calls have been received for a long time belong, based on the display contents of the LCD 51.

[0035] If there are waiting calls on lines with 6 or more groups, only the top 6 will be displayed, but when the number of waiting groups decreases due to a response from the extension, the ranking will be changed in order. The next item will be displayed.

FIG. 10 shows an example of a response processing flow for the response processing program between the private branch exchange main device 1 and the extension telephone 17. At the extension telephone 17, the extension telephone 17
When on-hook is detected (step 200), a dial tone is sent (step 210). Next, the press of the substitute key in the PB switch 49 is detected (step 2
20), transmits a proxy call setting signal to the private branch exchange main device 1 (step 230).

As a result, the private branch exchange main device 1 receives the proxy call setting signal from the extension telephone 17 (step 300).
), transmits a response signal to that extension telephone 17 (step 310).

The extension telephone 17 receives the response signal from the private branch exchange main device 1, and as a result, the extension telephone 17 and the private branch exchange main device 1 establish a communication path with each other (step 2).
50, step 320).

Next, the private branch exchange main device 1 transmits LCD display data of guidance for proxy response to the extension telephone 17 with which the communication path has been established (step 330). As a result, the extension telephone 17 is connected to the LC from the private branch exchange main device 1.
Receive the D display data (step 260) and display it as L.
Display on CD51. As a result, the LCD 51 displays the image shown in FIG.
1, the line group names in the waiting state are displayed in the waiting order in the line group waiting order list, and the selection key number is displayed for each line group name (
step 270). If the # key is operated under the display, the next line group name and selection key number are displayed.

Next, the extension telephone 17 detects that any key has been operated to select a line group (step 280), and transmits a line group selection key signal to the private branch exchange main unit 1 (step 290). As a result, the operator can freely select and specify the line group to which the extension telephone 17 should respond. In other words, the operator recognizes the line group names in which the incoming lines in the waiting state exist based on the display contents of the LCD 51 in the order of the lines that have received calls for a long time, and then selects the line to respond to by line group. can.

The private branch exchange main device 1 receives the line group selection key signal from the extension telephone 17 (step 340).
), and determines the line group number to respond accordingly (step 350).

Next, it is determined whether or not there is an incoming call, in other words, a waiting call, on the determined line group (step 36).
0). If there is no waiting call, the process returns to step 330, and if there is a waiting call, it is determined to connect the line with the oldest waiting call among the lines belonging to the determined line group, and this is captured (step 370). Then, the communication path between the extension telephone 17 and the private branch exchange main device 1 is connected to the incoming call line of the waiting call (step 380). As a result, the extension telephone 17 is placed in a state where it can communicate with the incoming line of the oldest waiting call via the private branch exchange main device 1.

The key sequence of the proxy key operation and the line group selection key operation in the above-mentioned extension telephone 17 may be registered in advance in the one-touch key for each line group, and in this case, the one-touch key operation causes the button telephone device The incoming line can be captured with the same number of keystrokes as in the case of . In this case, each one-touch key is assigned to each line group. These one-touch keys are used to select and designate line groups, and are not assigned to individual lines, so the number of required one-touch keys does not increase with the number of lines. However, if the number of lines belonging to one line group is 1, the one-touch key essentially corresponds to a single line.

[0044] The incoming call display as described above is performed, and the telephone extensions for which the operator can freely select and set the response line group according to his will are only for one or some extension groups, and extensions that do not belong to that extension group are Normal automatic call distribution may be performed for the telephone. In such a system, if the line group is of the automatic call distribution type, incoming calls are distributed only to extension phones that are set to "Available", making proxy answering impossible. It is necessary to operate in such a way that extension telephones that cannot answer incoming calls are not set to "Available." On the other hand, if the line group is of the non-automatic call distribution type, it is possible to respond on behalf of the line distributed to an extension telephone set to "Available" and "
Incoming calls are distributed even to extension phones that are not set to "Available", allowing proxy answers.

[0045] Therefore, when a proxy response is made as described above using the function of proxy response using an extension telephone that is not ringing,
If the specified line group is of the automatic call distribution type, only lines that are in the waiting state can be answered; if the specified line group is of the non-automatic call distribution type, the corresponding extension telephone is ringing. It may also be possible to respond to lines distributed to this. In addition, with intra-group proxy response, if another extension telephone in the same incoming call distribution group rings, a pre-specified key operation is performed following the proxy key operation, and the line group of the incoming line is set to non-automatic. If it is an incoming call distribution type, it is possible to respond by proxy. If the response priority order of line groups is set, a response is made to the oldest incoming line within each line group in order of priority from the line group with the highest destination order. In this case, when you answer, the line group name will be displayed on the LCD of the extension phone.
will be displayed.

[0046]

Effects of the Invention As can be understood from the above explanation, according to the incoming call display system in the telephone subscriber equipment according to the present invention, a plurality of outside lines are divided into groups according to the type of business, etc. Attributes such as the line group name are defined for each line group that has been received, and when a call is received, attributes such as the line group name of the line group to which the incoming line belongs are displayed on the display of the extension telephone, so the operator can check the display on the display. From the contents, the names of line groups in which incoming lines in a waiting state exist can be known in the order of lines including lines that have received calls for a long time, and by referring to this, the operator can select the line to which he should respond by line group. As a result, incoming calls have different types of incoming lines, and the operator selects one and responds spontaneously.Even if there are many lines, incoming calls can be easily operated without using an extension telephone with many buttons with lamps. I will be able to do it.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an example of the hardware configuration of a private branch exchange main unit of a telephone subscriber unit implementing an incoming call display system according to the present invention.

FIG. 2 is a block diagram showing an example of the hardware configuration of an extension telephone of a telephone subscriber device that implements the incoming call display system according to the present invention.

FIG. 3 is a diagram illustrating a line definition table used in the incoming call display system according to the present invention.

FIG. 4 is a diagram illustrating a line group definition table used in the incoming call display system according to the present invention.

FIG. 5 is a diagram illustrating an order of arrival line queue list used in the incoming call display system according to the present invention.

FIG. 6 is a diagram illustrating a line group waiting order list used in the incoming call display system according to the present invention.

FIG. 7: LC based on the LCD display processing program on the private branch exchange main device side in the incoming call display system according to the present invention.
Flowchart showing an example of a D display processing flow.

FIG. 8 is a flowchart showing an example of the LCD display processing flow by the LCD display processing program on the extension telephone side in the incoming call display system according to the present invention.

FIG. 9 is a diagram showing an example of display on an extension telephone display in the incoming call display system according to the present invention.

FIG. 10 (A) is a flowchart showing an example of a response processing flow by a response processing program of an extension telephone in the incoming call display system according to the present invention, and (B) is a flowchart showing an example of a response processing flow in the incoming call display system according to the present invention. 5 is a flowchart illustrating an example of a response processing flow by a response processing program of the main device.

FIG. 11 is a diagram showing an example of display on an extension telephone display in the incoming call display system according to the present invention.

[Explanation of symbols]

1　Private branch exchange main equipment 3 Time division switch circuit 7 Line interface 11　Extension interface 13 CPU 17　Extension telephone 19 Common trunk circuit 25 Memory 27 Computer interface 31 Computer 33 CPU 35 Memory 37 Extension interface 39 Audio interface 41 Input/output control circuit 43 LCD display circuit 49 PB switch 51 LCD

Claims (1)

[Claims] 1. A private branch exchange main device that divides a plurality of outside lines into a plurality of groups, defines attributes for each group, and manages the incoming call status of each line; A telephone subscription characterized in that an extension telephone is equipped with a display that displays data by transmitting display data from a private branch exchange, and when there is an incoming line, the attribute of the group to which the line belongs is displayed on the display. An incoming call display system in a terminal device.