JPH11187434A - Key telephone set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve operating convenience and to reduce the cost by displaying plural line numbers of plural incoming calls and caller telephone numbers on a display device of a key telephone set in time division and the screen display is available on a small screen of a liquid crystal display device. SOLUTION: A master set 1 contains plural trunk lines L1...Ln and key telephone sets 2, 3 and sequentially informs the key telephone sets 2, 3 of a line number of a trunk line and a caller telephone number at the arrival of an incoming call from a public telephone line network. The key telephone sets 2, 3 display automatically the line number and the caller telephone number in this incoming call and a line number and a caller telephone number sent from the master set 1 after the arrival of the incoming call in time division on a screen. Or the line numbers and the telephone numbers are displayed on screen in time division by a manual operation instruction. In this case, the respective line numbers and caller telephone numbers are displayed on one line in time division on a screen. Furthermore, they are notified in a synthesized voice automatically or a manually operated instruction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen for displaying a telephone number (hereinafter, appropriately referred to as a calling telephone number) assigned to a calling telephone which is notified when a call is received from a public telephone network (PSTN). Regarding the button telephone device to display, in particular,
The present invention relates to a key telephone apparatus for displaying a line (station line) number and an originating telephone number at the time of receiving an incoming call to a main unit accommodating a plurality of central lines and a key telephone apparatus in a key telephone.

[0002]

2. Description of the Related Art Conventionally, a calling telephone number display service and a calling telephone number display announcement service for notifying a called telephone of a called telephone number via a public telephone network (PSTN) have been provided.

FIG. 8 is a block diagram showing a schematic configuration of a conventional key telephone apparatus. In this example, a main line 1 is connected to a station line La (station lines L1 and L1) from a public telephone network (PSTN).
2), Lb is accommodated, and key telephones 2 and 3 are connected. The key telephones 2 and 3 are set with a number notification service operation, and are provided with displays 2a and 3a such as a liquid crystal display for displaying a telephone number transmitted from a public telephone network on a screen.

In this key telephone apparatus, a call telephone number, which is a telephone number assigned to a telephone on the calling side, is notified from the public telephone line network when a call is received to the key telephones 2 and 3. Before picking up (hanging up) the handset (not shown), the calling telephone numbers are displayed on the displays 2a and 3a,
From the displayed telephone number, the originating telephone number (caller) can be identified.

In this case, the display 2 of the key telephones 2 and 3 is used.
a and 3a are office lines L to which the number notification service is set.
The calling telephone numbers from a and Lb are individually notified. In other words, when two incoming calls are simultaneously received from the office lines La and Lb, the respective outgoing telephone numbers in the incoming calls to the two office lines La and Lb are displayed on the display 2a of the key telephone 2, for example. It cannot be displayed on the screen at the same time.

Under the control of the main unit 1, the local lines La, 3a are respectively displayed on the displays 2a, 3a of the key telephones 2, 3.
When receiving a call from Lb at the same time, or receiving operation (call)
It is possible to display two outgoing telephone numbers on the screen. In this case, since the two outgoing telephone numbers are displayed on the displays 2a and 3a, for example, in two lines, it is necessary to arrange a liquid crystal display having a wide screen, which increases the cost.

[0007]

As described above, in the above conventional example, the outgoing telephone numbers of the incoming calls to the two local lines La and Lb are simultaneously displayed on the displays 2a and 3a of the key telephones 2 and 3, respectively. Cannot display. Therefore, there has been inconvenience such as not being able to respond to calls to an outgoing telephone number requiring urgency. Further, when the display units 2a and 3a of the key telephones 2 and 3 control the screen display of a plurality of outgoing telephone numbers in a plurality of incoming calls from the office lines La and Lb,
There is a drawback that a liquid crystal display having a wide screen is required and the cost is increased.

SUMMARY OF THE INVENTION The present invention solves such problems in the prior art, in which a plurality of line (station line) numbers and calling telephone numbers at the time of a plurality of incoming calls from a public telephone network are used in a key telephone. Screen display is narrow, for example,
It can be displayed on a liquid crystal display composed of a one-line screen display unit, and can be notified with synthesized voice, and can make automatic dialing with stored stored telephone numbers, improving the convenience of use, and It is another object of the present invention to provide a key telephone device capable of reducing costs.

[0009]

In order to achieve the above-mentioned object, the present invention connects a calling telephone number, which is a telephone number of a calling-side telephone notified at the time of receiving a call from a public telephone network, to a main unit. A key telephone apparatus for displaying a screen on a key telephone set, wherein a main unit accommodates a plurality of lines and a key telephone, and indicates a central line for each incoming call from the public telephone network to a plurality of central lines. The line number and the originating telephone number are detected and sequentially notified to the key telephone. In addition, the key telephone displays the line number and the outgoing telephone number sent from the main unit and the line number and the outgoing telephone number newly sent from the main unit during the incoming call after the incoming call in a time-division manner. There is a configuration.

In this configuration, a plurality of line numbers and outgoing telephone numbers are displayed on a screen by automatic or manual operation instructions and time-divisionally, or are notified by synthesized voice. In this case, one line number and calling telephone number are displayed on the screen in at least one line.

Further, the key telephone apparatus of the present invention comprises, as main units, a plurality of local line circuits, a plurality of outgoing telephone number detecting circuits for detecting outgoing telephone numbers from a public telephone network, an extension circuit, and a switch. The configuration includes a circuit and a control unit that controls switching of the switch circuit.

Further, the key telephone apparatus of the present invention is a key telephone which displays an input / output I / F circuit, a telephone circuit, a microphone and a speaker, and a plurality of line numbers and calling telephone numbers in a time-division manner. A timer circuit for performing time measurement, a display unit for displaying a screen, a keyboard, and a control unit for performing control for automatically displaying a plurality of line numbers and calling telephone numbers at the time of a plurality of incoming calls on a time-division screen. It is provided as a configuration.

Further, the key telephone apparatus of the present invention is a key telephone, and has a function key for giving a manual operation instruction for displaying a screen on a time-division basis of a plurality of line numbers and a calling telephone number at the time of receiving a call through a central office line to the main apparatus. And a control unit for controlling the display of a plurality of line numbers and outgoing telephone numbers on a time-division screen in accordance with a manual operation instruction of the function key. The line number and the outgoing telephone number are displayed on a time-division screen. Further, a synthesized voice circuit and a speaker for outputting a plurality of line numbers and outgoing telephone numbers as synthesized voices, and a plurality of line numbers and outgoing telephone numbers,
The control unit performs control to display a screen in a time-division manner automatically or in response to a manual operation instruction by operating a function key, and to notify the synthesized voice.

Further, the key telephone apparatus of the present invention is configured so that the key telephone reads out the calling telephone number stored in the storage means under the control of the control unit and performs an input operation to the keyboard to automatically dial.

According to the key telephone apparatus of the present invention having such a configuration, the key telephone automatically displays a plurality of line numbers and calling telephone numbers in a time-division manner on a screen when a plurality of calls are received from a public telephone line network. Alternatively, a screen is displayed in a time-sharing manner by a manual operation instruction. In addition, the notification is made in a synthesized voice by an automatic or manual operation instruction. In this case, each line number and calling telephone number are displayed on a single line and in a time-division manner on the screen. Therefore, the convenience of use is improved, and a large liquid crystal display is not required, so that the cost can be reduced.

In the key telephone apparatus of the present invention, the key telephone reads out the outgoing telephone number stored in the storage means under the control of the control unit and performs an input operation to the keyboard to perform automatic dial transmission. The convenience of is improved.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the key telephone apparatus of the present invention will be described in detail with reference to the drawings. In the following text and drawings, the same components as those in FIG. 8 are denoted by the same reference numerals. FIG. 1 is a block diagram showing a configuration of a main device in a first embodiment of a key telephone device of the present invention. The main unit 1 is a public telephone line network (PSTN)
, Ln,... Ln, and key telephones 2 and 3 are connected. When three or more key telephones are connected to the main device 1, the same operation is performed as follows.

Main unit 1 is connected to office lines L1... Ln and serves as office line circuit 11 for acquiring, connecting and releasing lines.
.. 1n, outgoing telephone number detecting circuits 101... 10n connected to the central office circuits 11... 1n to detect outgoing telephone numbers from the public telephone network (PSTN), and key telephones 2 and 3, respectively. , And extension circuits 14 and 15 for performing connection processing between an extension and an extension.

Further, the main unit 1 comprises a central office circuit 11.
a switch circuit 16 for switching a connection path between the main device 1 and the extension circuits 14 and 15;
For example, the control unit 17 controls the setting of the absence notification from the key telephones 2 and 3 and the control of switching the connection path between the line circuits 11... 1n and the extension circuits 14 and 15, and the control unit 17 executes the control. And a memory 18 storing a control program and the like.

FIG. 2 shows the key telephones 2 and 3 of the first embodiment.
FIG. 3 is a block diagram showing a detailed configuration. The key telephones 2 and 3 are provided with input / output I / Fs for performing an interface (I / F) process for a ring tone signal, a call signal, and the like with the main device 1.
An F circuit 20; a telephone circuit 21 for amplifying a transmission signal and a reception signal and a side tone processing; a microphone 22 and a speaker 23 constituting a handset;
.. A timer circuit 24 for counting the time when a plurality of line numbers and outgoing telephone numbers are displayed on a screen in a time-division manner in an incoming call through Ln, and a working memory for storing the line numbers and outgoing telephone numbers from the main unit 1 25.

Each of the key telephones 2 and 3 has a liquid crystal display (LCD) for time-divisionally displaying various processing data, in particular, a plurality of line numbers and outgoing telephone numbers when receiving an incoming call to the office lines L1 to Ln. ), A keyboard 27 for performing on / off hooks and inputting of telephone numbers when making and receiving calls, and a light emitting diode (LED) that lights up when making and receiving calls. The light-emitting unit 28 and each unit are controlled. In particular, each of a plurality of line numbers and outgoing telephone numbers in an incoming call to the main unit 1 through the local line L1. It has a control unit 29 for controlling the display and a hard disk device 40 for storing the outgoing telephone number when receiving a call.

Next, the operation of the first embodiment will be described. 1 and 2, the individual operations of the main device 1 and the key telephones 2 and 3 will be described first. The main unit 1 captures, connects, and releases the office lines L1... Ln under the control of the office circuits 11. In response to an incoming call to the line circuits 11... 1n, the outgoing telephone number detecting circuits 101... 10n detect outgoing telephone numbers from a public telephone network (not shown), and transmit this data to the control unit 17. The extension circuits 14 and 15 are key telephones 2 and 3 respectively.
The connection processing of the internal line or the external line is performed.

The local line circuits 11... 1n and the extension circuit 1
The switch circuit 16 switches the connection path between 4 and 15 under the control of the control unit 17. Further, based on the control program in the memory 18, the control unit 17 controls the main unit 1, for example, the setting control of the absence notification from the key telephones 2, 3, the line circuits 11.
Control is performed to switch the connection path between 4 and 15.

In the key telephones 2 and 3, the input / output I / F circuit 20 processes an interface related to input / output of a ring tone signal and a call signal with the main unit 1, and a telephone circuit 21.
Performs amplification and side tone processing of a transmission signal and a reception signal between the microphone 22 and the speaker 23. Control unit 2
9 performs control for displaying a plurality of line numbers and outgoing telephone numbers in a time-division manner on a screen in a case of an incoming call to the main apparatus 1 via the office lines L1 to Ln. Further, the timer circuit 24 measures the time when the calling telephone number is displayed on the screen in a time sharing manner.
Is changed through the control of For example, if the user selects any one
Set the seconds.

In the key telephones 2 and 3, the display 26 is further controlled by the control unit 29, and in particular, the office line L 1
... A line number and an outgoing telephone number for an incoming call to Ln are displayed on a time-division screen, and a light emitting unit 28 is turned on at the time of outgoing and incoming calls. Further, the keyboard 27 performs on / off hooks for outgoing and incoming calls, input operation of telephone numbers, and the like, and the hard disk device 40 stores the outgoing telephone numbers.

Next, the operation of displaying a plurality of line numbers and outgoing telephone numbers on a time-division screen when a plurality of incoming calls are made to the main unit 1 via the office lines L1 to Ln will be described in detail. FIG.
5 is a flowchart showing a main part of a processing procedure of the operation of the first embodiment. When a call is received from main lines 1 to Ln shown in FIG. 1 to main apparatus 1, the outgoing telephone number notified from the public telephone line network by this call is transmitted through outgoing line circuits 11 to 1n and outgoing telephone number detecting circuits 101 to 10n. Is detected. Then, the control unit 17 sends the detected outgoing telephone number data to the control unit 17. For example, when there is an incoming call by dial-in from the central office line L1 to the key telephone 2, the control unit 17 sends a ringing signal to the key telephone 2 having the extension number through the extension circuit 14. In the case of an incoming call to the representative telephone number, the control unit 17 judges from the control states of the line circuits 11... 1n, the extension circuits 14, 15 and the switch circuit 16 to the vacant key telephones 2, 3. Sends a ring signal.

When a ringing tone signal is transmitted from main unit 1 to key telephone 2 shown in FIG. 2, at the same time, the line number (station line L1) of the incoming call and the outgoing telephone number data notified from the public telephone line network. Is sent. In the key telephone 2, the line number (station line L1) and the calling telephone number data are stored in the memory 25 and the hard disk device 40 under the control of the control unit 29.
To be stored. The hard disk device 40 stores the current outgoing telephone number data together with the previous outgoing telephone number data.

Further, the key telephone 2 transmits a ringing tone signal to the speaker 23 through the telephone circuit 21, and the ringing tone of the incoming call is blown (ringed). Note that a dedicated ringer (speaker) for sounding a ringing sound may be provided, and the ringing sound may be sounded from here. Along with the ringing of the incoming call, the line number (station line L1) and the calling telephone number stored in the memory 25 are read out and displayed on the display 2
6 is displayed on the screen. For example, this screen display shows "1.1234-" as the line number (station line L1) and the calling telephone number.
5678 "is displayed with one line. Thereafter, the main unit 1 is notified of the off-hook of the handset of the microphone 22 and the speaker 23 via the control unit 29 and the input / output interface circuit 20.

Main unit 1 receives an off-hook signal from key telephone 2 through extension circuit 14, controls switch circuit 16 to connect station line circuit 11 and extension circuit 14, and closes a communication path in a public telephone network. The main unit 1 takes in the call termination signal to restore the communication path. The control unit 17 of the main unit 1 sends the line number and the outgoing telephone number data to the key telephone 2 during the incoming call to the other station line... Then, it is stored in the memory 25 here.

The key telephone 2 controls the timer circuit 24 to operate after the control unit 29 performs the display start process as shown in FIG. 3 (steps S101 and S102). Next, for example, a preset one second is measured, and the end (out) of the time measurement is determined (step S103).
If the time is being counted (S103: No), the screen display of the data of the line number (station line L1) and the calling telephone number on the display 26 is held as described above (step S104).

If the time is out in step S103 (S103: Yes), the control unit 29 clears the timer in the timer circuit 24 (step S10).
5) Next, it is determined whether or not data of a line number (station line... Ln) and a calling telephone number other than those currently displayed on the display 26 are stored in the memory 25 (step S).
106). That is, during the current incoming call at the key telephone 2, there is an incoming call to another station line... Ln and the key telephone 3, and whether the data of the line number (station line... Ln) and the calling telephone number are taken in or not. Judge.

When the data of the new line number (station line... Ln) and the calling telephone number have not been taken in (S107: N)
o), the screen display of the data of the current line number (station line L1) and the calling telephone number on the display 26 is held (step S107). Also, when data of a new line number (office line... Ln) and a calling telephone number is taken in (S10).
7: Yes), the control unit 17 reads out the data of the new line number (station line... Ln) and the calling telephone number from the memory 25 and sends it to the display 26, and the line number currently displayed on the screen. (Station line L1) and the data of the calling telephone number are switched and displayed alternately in a time-division manner on the screen. For example, the first screen display "1.1234-4678" and the line number and the outgoing telephone number "5.8875-
4321 "is displayed on the screen in a time sharing manner.

Furthermore, when a new incoming call is on the office line... Ln, the three line numbers (office line... Ln) and the calling telephone numbers are displayed on a time-division screen. After the alternate screen display, when the call is terminated by the key telephone 2, that is, an on-hook signal on which the handset is placed is transmitted to the main device 1 through the control unit 29 and the input / output interface circuit 20. Main device 1 receives an on-hook signal from key telephone 2 through extension circuit 14, disconnects a communication path between office line circuit 11 and extension circuit 14 by controlling switch circuit 16, and A call end signal is sent to the public telephone line network through, and the communication path is restored (steps S109 and S110). At the same time, the alternate display of the line number and the outgoing telephone number on the display 26 by time division is stopped (step S111).

As described above, in the first embodiment, the line numbers and the outgoing telephone numbers of a plurality of incoming calls to the main unit 1 through the local lines L1...
In step 6, for example, the screen is automatically displayed in one line and time division. Therefore, a new urgent incoming call (line number, outgoing telephone number) during a call can be easily identified, and the screen is displayed in a time-division manner with one line, so the display 26 using a large liquid crystal display is used. Becomes unnecessary, and the cost can be reduced.

FIG. 4 shows a key telephone 2A of the second embodiment.
It is a block diagram which shows the detailed structure of 3A. The key telephones 2A and 3A according to the second embodiment include an input / output I / F circuit 20, a telephone circuit 21, a microphone 22, a speaker 23, a memory 25, a display 26, and the like, as in the first embodiment. It has a keyboard 27, a light emitting unit 28, and a hard disk device 40. Further, in accordance with the second embodiment, each unit is controlled, and in particular, a plurality of line numbers and a calling telephone number at the time of a plurality of incoming calls to the main apparatus 1 are transmitted to the office line L1.
.. A control unit 29a for performing a time-division screen display by manual input operation of the keyboard 27 for selecting Ln and manual input of a special number (function key); A function key (button) 30 for inputting a special number for display. The configuration of the main device 1 is the same as that of the first embodiment shown in FIG.

Next, the operation of the second embodiment will be described. FIG. 5 is a flowchart showing the processing procedure of the operation of the second embodiment. The operation of the second embodiment is the same as that of the first embodiment.
This is basically the same as the embodiment. That is, the main unit 1 transmits the line number (station line L1... Ln) at the time of the incoming call and the outgoing telephone number data notified from the public telephone line network to the key telephone 2.
A, 3A. The key telephones 2A and 3A store the data of the line number and the calling telephone number in the memory 25 and the hard disk device 40. The line number and outgoing telephone number stored in the memory 25 are displayed on a time-division screen by manual input operation.

In this screen display, first, after the display start processing, the function keys (buttons) of the key telephones 2A and 3 are set.
30 is pressed, the control unit 29a is set to the display mode, and then the line key (station line L1
(Corresponding to... Ln) is determined (steps S201, S202, S203). When the control unit 29a does not receive this line key press signal (S20
2: No), the current display contents are held, and when the control unit 29a captures the press signal (S202: Yes), the line number and transmission corresponding to the line (station line L1... Ln) pressed in the memory 25. It is determined whether telephone number data is stored (step S205).

If the data of the line number and the outgoing telephone number are not stored (S205: No), the current display contents are retained (S207: Yes), and the data of the line number and the outgoing telephone number are stored. (S2
05: Yes), the stored line number and calling telephone number data are displayed on the screen of the display 26. Also,
When the data of the new line number (station line Ln) and the originating telephone number is taken in, the new line number (station line ...
Ln) and the data of the calling telephone number are read out from the memory 25 by the control unit 17 and sent to the display 26, and the data of the line number and the calling telephone number currently being displayed on the screen are switched and time-division alternately. To display on the screen (Step S
106).

Further, when the data of the new line number and the calling telephone number is stored in the memory 25, an alternate screen by time division of the line number and the calling telephone number is controlled by the control unit 29a as in the first embodiment. Display. The call termination processing in the key telephones 2A and 3A after the screen is displayed is the same as in the first embodiment (steps S208, S209, and S21).
0).

As described above, in the second embodiment, the plurality of line numbers and the outgoing telephone numbers at the time of a plurality of incoming calls to the main unit 1 via the local lines L1 to Ln are stored in the key telephones 2A and 3A.
The screen is displayed on the display 26 by the manual operation in the above. Therefore, the outgoing telephone number at the time of receiving a call for each line (station line L1... Ln) can be easily found, and selective and prompt response to the incoming call is possible. Further, since the screen is displayed in a time-division manner with one line, the display 26 using a large-sized liquid crystal display becomes unnecessary, and the cost can be reduced.

FIG. 6 shows a key telephone 2B according to the third embodiment.
It is a block diagram which shows the detailed structure of 3B. In the third embodiment, the line number and the outgoing telephone number are notified by synthesized voice. The key telephones 2B and 3B include an input / output I / F circuit 20, a telephone circuit 21, a microphone 22, a speaker 23, and a timer circuit 24 similar to those of the first embodiment.
, Memory 25, display 26, keyboard 27,
It has a light emitting unit 28 and a hard disk device 40.

Further, the key telephones 2B and 3B control the respective units according to the third embodiment. In particular, the plurality of line numbers and the plurality of outgoing telephone numbers received by the main unit 1 are voiced in a time-division manner. A control unit 29b for controlling the notification; a synthesized voice circuit 45 and a speaker 46 for displaying a plurality of line numbers and outgoing telephone numbers received by the plurality on the main device 1 in a time-division manner and outputting voice. have. Synthetic voice circuit 4
5 is provided with a volume VR for volume adjustment.
The configuration of the main device 1 is the same as that of the first embodiment shown in FIG.

Next, the operation of the third embodiment will be described. This operation is the same as that of the key telephones 2 and 3 of the first embodiment shown in FIG.
n, the line numbers and the outgoing telephone numbers when a plurality of calls are received are displayed on the display units 26 of the key telephones 2B and 3B shown in FIG.
And, for example, the screen is automatically displayed in a time-division manner with one line, and the data of the line number and the calling telephone number from the control unit 29b is converted into a voice signal by the synthetic voice circuit 45, and is set by the volume VR. The sound is output from the speaker 46 based on the adjusted volume.

The third embodiment has been described with reference to the key telephones 2 and 3 of the first embodiment shown in FIG.
The same can be applied to the key telephones 2B and 3B of the second embodiment shown in FIG.

As described above, in the third embodiment, the line number and the outgoing telephone number are automatically displayed on the display 26 alternately, for example, in one line in a time-division manner, and the line number and the outgoing telephone number are displayed in voice. Informing. Therefore, even when the display screen (line number and calling telephone number) is difficult to see, such as when a small liquid crystal display is used as the display 26, the confirmation can be easily made by voice notification. Become.

FIG. 7 is a flowchart showing a processing procedure of the operation of the fourth embodiment. The configuration of the fourth embodiment is as follows.
It is the same as the main device 1 and the key telephones 2, 3/2 A, 3 A / 2 B, 3 B in the first to third embodiments, and stores the name of the caller for the calling telephone number stored in the hard disk device 40. The phone numbers are sorted and stored in the order of "aiueo" or the like, and the calling telephone number is read out at a later date to perform automatic dialing.

Next, the operation of the fourth embodiment will be described. The originating telephone numbers are stored in the hard disk devices 40 of the key telephones 2, 3 / 2A, 3A / 2B, 3B in the first to third embodiments. Thereafter, the name of the caller for the calling telephone number is stored by the input operation of the keyboard 27 and the control of the control unit 29 (29a, 29b). Furthermore,
Sort in "aiueo" order. At a later date, an outgoing telephone number is retrieved from this caller name and automatic dialing is performed.

In FIG. 7, the automatic dialing mode is set by the input operation of the keyboard 27 and the control of the control unit 29 (29a, 29b). Further, the keyboard 27 is instructed to search for one or more sender names. You. In this input operation, enter all the characters of the caller's name and search for that one caller's telephone number, or enter the first character and make a call for each character A number is searched (steps S301, S302). In response to an instruction to search for one or more sender names from the keyboard 27, the control unit 29 (29a, 2a) is displayed on the screen of the display unit 26.
Under the control of 9b), the name of the caller and the telephone number of the caller are displayed on the screen (steps S303, S304, S30).
9, S310).

Display 2 for instructing retrieval of a plurality of sender names
The control unit 29 takes in the scroll instruction on the screen of No. 6
(29a, 29b) make a determination (step S305), and scrolling is executed by the input operation from the keyboard 27, and the desired caller name and caller telephone number are displayed on the display unit 2.
6 (steps S306 and S30).
7). Next, when the automatic dialing for the displayed calling telephone number is instructed from the keyboard 27 (step S308), the control unit 29 (29a, 29b), for example, a PB (bush) corresponding to the calling telephone number. Button) to generate a DTMF signal and input / output I / O
It is sent to the main device 1 through the F circuit 20 (step S3
11, S312).

In the main unit 1 shown in FIG. 1, the selection (dial) signal (DTMF signal) is transmitted to the extension circuits 14, 15, the switch circuit 16, the office circuits 11 ... 1n and the office lines L1 ... L.
n to the public telephone network to connect to the destination,
Make that phone call. Thereafter, the control unit 29 (29a,
In the control of 29b), a time is measured by a timer, and control for stopping the screen display of the display 26 after a predetermined time is performed.

[0051]

As is apparent from the above description, according to the key telephone apparatus of the present invention, the key telephone sets the plurality of line numbers and the outgoing telephone numbers at the time of a plurality of incoming calls from the public telephone line network. The screen is displayed in a time-sharing manner according to a manual or manual operation instruction, and the synthesized voice is notified by an automatic or manual operation instruction. In this case, each line number and calling telephone number are displayed on a single line and in a time-division manner on the screen. As a result, the convenience of use is improved, and the cost can be reduced because a large liquid crystal display is not required.

According to the key telephone apparatus of the present invention,
The key telephone reads out the outgoing telephone number stored in the storage means under control of the control unit and performs an input operation to the keyboard to perform automatic dialing, and the telephone directory in which the telephone numbers of the call destinations are stored is automatically stored. It will be created and its usability will be improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a main device in a first embodiment of a key telephone device of the present invention.

FIG. 2 is a block diagram showing a detailed configuration of the key telephone of the first embodiment.

FIG. 3 is a flowchart illustrating a processing procedure of an operation according to the first embodiment.

FIG. 4 is a block diagram showing a detailed configuration of a key telephone according to a second embodiment.

FIG. 5 is a flowchart illustrating a processing procedure of an operation according to the second embodiment.

FIG. 6 is a block diagram illustrating a detailed configuration of a key telephone according to a third embodiment.

FIG. 7 is a flowchart illustrating a processing procedure of an operation according to a fourth embodiment.

FIG. 8 is a block diagram showing a schematic configuration of a conventional key telephone device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main apparatus 2,3,2A, 3A, 2B, 3B Button telephone 11 ... 1n Local line circuit 14,15 Extension circuit 16 Switch circuit 17,29,29a, 29b Control part 18,25 Memory 24 Timer circuit 26 Display 27 Keyboard 40 Hard disk drive 30 Function keys 45 Synthesized voice circuit 101 ... 10n Calling telephone number detection circuit L1 ... Ln Local line

Claims (11)

[Claims] 1. A key telephone apparatus for displaying, on a key telephone connected to a main apparatus, a calling telephone number, which is a telephone number of a telephone set of a calling side, which is notified when a call is received from a public telephone line network. Accommodates multiple lines and key telephones,
For each incoming call from the public telephone network to a plurality of office lines, a line number indicating an office line and an originating telephone number are detected and sequentially notified to the key telephone, and the key telephone is A line number and an outgoing telephone number sent from the apparatus and a line number and an outgoing telephone number newly sent from the main apparatus during an incoming call after the incoming call are displayed in a time-division manner. Button telephone equipment. 2. The key telephone apparatus according to claim 1, wherein the key telephone displays a plurality of line numbers and calling telephone numbers sent from a main unit on a screen automatically and in a time-division manner. 3. The key telephone set according to claim 1, wherein a plurality of line numbers and calling telephone numbers sent from a main unit are displayed on a time-division screen according to a display instruction by a manual operation. Button telephone equipment. 4. The key telephone displays a plurality of line numbers and calling telephone numbers sent from a main unit in a time-division manner on a screen in accordance with a display instruction by an automatic or manual operation, and notifies by a synthetic voice. The key telephone device according to claim 1, wherein 5. The key telephone apparatus according to claim 1, wherein the key telephone displays one line number and a calling telephone number on a screen in at least one line. 6. A plurality of central office circuits, each of which is connected to a local line and performs line capture, connection and release, as a main unit, and connected to a public telephone line network and connected to each of the plural local office circuits. A plurality of outgoing telephone number detection circuits for detecting an outgoing telephone number, an extension circuit connected to the key telephone to perform an extension or external line connection process, and a switch circuit for switching connection between the office line circuit and the extension circuit. The key telephone device according to claim 1, further comprising: a control unit configured to control switching of the switch circuit. 7. An input / output I / F circuit for performing an interface process including a ring tone signal and a call signal with a main unit as the key telephone, and at least amplifying and side tone processing of a transmission signal and a reception signal. A telephone circuit to perform, a microphone and a speaker for a call, a timer circuit to measure the time when displaying a plurality of line numbers and outgoing telephone numbers on a time-division screen, and a time-division screen to display a plurality of line numbers and outgoing telephone numbers. A display for displaying; a keyboard for performing operations including on / off hooking and inputting of a telephone number when making and receiving calls; and automatically displaying a plurality of line numbers and outgoing telephone numbers in the plurality of incoming calls. The key telephone device according to claim 1, further comprising: a control unit that performs control for displaying a screen in a divided manner. 8. An input / output I / F circuit for performing an interface process including a ring tone signal and a call signal with a main unit as the key telephone, and at least amplifying and side tone processing of a transmission signal and a reception signal. A telephone circuit to perform, a microphone and a speaker for a call, a timer circuit to measure a time when displaying a plurality of line numbers and an outgoing telephone number on a time-division screen, and A display for displaying a screen, a keyboard for performing operations including on / off hooks for calling and receiving calls, selecting a line, and inputting a telephone number, and displaying the plurality of line numbers and calling telephone numbers in a time-division manner. A function key for performing a manual operation instruction when performing the operation, and a control unit for performing control to display a plurality of line numbers and calling telephone numbers on a time-division screen in accordance with the manual operation instruction using the function key. 2. The key telephone device according to claim 1, wherein 9. The key telephone apparatus according to claim 8, wherein the control unit displays only a line number and an originating telephone number on a screen in a time-division manner when an incoming call is made to an office line selected by a keyboard. 10. An input / output I / F circuit for performing an interface process including a ring tone signal and a call signal with a main unit as the key telephone, and at least amplifying and side tone processing of a transmission signal and a reception signal. A telephone circuit to perform, a microphone and a speaker for a call, a timer circuit to measure the time when displaying a plurality of line numbers and outgoing telephone numbers on a time-division screen, and a time-division screen to display a plurality of line numbers and outgoing telephone numbers. A display for displaying; a keyboard for performing operations including on / off hooks for calling and receiving calls, selecting a line and inputting a telephone number; and a time-division screen for the plurality of line numbers and calling telephone numbers. A function key for giving a manual operation instruction when displaying, a synthesized voice circuit and a speaker for outputting the line number and the calling telephone number as synthesized voice, and a plurality of lines sent from the main device 2. A control unit for controlling a number and an outgoing telephone number to be notified in a time-division and synthesized voice manner by a display instruction automatically or manually by the function key. Telephone equipment. 11. The key telephone according to claim 1, further comprising: storage means for storing the outgoing telephone number, reading out the outgoing telephone number stored in said storage means by control of a control unit and input operation to a keyboard, and automatically dialing. 11. The telephone apparatus as set forth in claim 7, wherein: