JP3288319B2 - Button phone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key telephone, and more particularly to a key telephone for notifying information such as a caller ID of an extension terminal.

[0002]

2. Description of the Related Art Conventionally, a key telephone and a private branch exchange for notifying information such as a caller ID of an extension terminal have been known (Japanese Patent Application Laid-Open Nos. 4-265047 and 8-6539).
No. 1). Japanese Patent Application Laid-Open No. Hei 4-265047 (title of "Caller Information Notification Method") discloses that when a call operation is performed on an extension telephone with a display window on the called side in a talking state, a calling number is set. Information and the called party number information to an external computer, receive a search result of calling party information corresponding to the calling party number registered in advance from a database provided in the computer, and receive a call according to the information. A configuration is disclosed in which an extension telephone with a display window displays information of a caller who comes later.

As shown in FIG. 2, a private branch exchange (PBX) is disclosed in Japanese Unexamined Patent Publication No. Hei 8-65391 (the title of the invention, "exchange apparatus having caller ID notification service function").
When there is a request for an extension intercommunication from the extension telephone 21 accommodated in the telephone set 22, the telephone number of the called telephone dialed by the calling telephone after the call is established is transmitted to the processor 23 which operates on the interface 23 and the call processing program 28. The data is stored in the main storage device 27 via After the processor 26 recognizes that the called telephone has dialed the caller extension number notification special number from the called telephone, the processor 26 transmits the caller extension number notification control device 2 via the interface 25.
9 through the switch 24 and the interface 25 so as to notify the called telephone 21 of the extension of the calling telephone to the called telephone 21 that has dialed the caller's extension notification special number. The device 29 is controlled. The caller extension number notification control device 29 converts the telephone number sent from the processor 26 into a voice signal and sends it to the switch 24 via the interface 25.

[0004]

However, in the conventional key telephone set described in Japanese Patent Application Laid-Open No. Hei 4-265047, a caller ID is received and analyzed from a line by a receiving circuit and displayed when the called party is busy. Since the display is performed on the extension telephone with a window, there is a problem that a dedicated receiving circuit and a dedicated extension telephone with a display window are required.

In the conventional key telephone set described in Japanese Patent Application Laid-Open No. 8-65391, the caller number is notified by voice guidance after the end of the call, and the caller number is not notified until after the end of the call.

[0006] The present invention has been made in view of the above points,
It is an object of the present invention to provide a key telephone capable of notifying a terminal (single telephone) accommodated in an extension of a caller's information.

[0007]

[0008]

Since this onset bright [SUMMARY OF] is to achieve the above object, is connected to the caller ID can access the extension to Ichimata the two or more common commercial with caller ID function
A key telephone that accommodates a single telephone , a polarity reversal detection circuit that detects the reversal of the polarity of the DC voltage supplied from the line in a standby state, and the presence or absence of the incoming signal according to the voltage level of the incoming signal transmitted from the line a ring detection circuit for detecting a polarity inversion sending circuit for inverting the polarity of the DC voltage supplied to the single line telephone, and incoming signal sending circuit for sending an incoming signal to a single phone, a direct current is supplied to the single line telephone a terminal capture detection circuit for detecting that the single line telephone is captured line by the line capture circuit alone phone transmits information indicating that the captured line to the line, a line speech circuit for extracting a voice signal from the line a switch circuit for connecting or disconnecting the communication path between the terminal speech circuit for transmitting audio signals to single line telephone, a line speech circuit and the terminal call circuit, the polarity counter The polarity of the output DC voltage of the polarity inversion transmission circuit is controlled to be inverted by the input of the detection signal from the detection circuit, and the operation of the incoming signal transmission circuit is controlled according to the presence or absence of the detection signal from the incoming signal detection circuit. The receiving terminal activation signal is output to the single telephone , and the operation of the line capturing circuit is controlled based on the detection signal from the terminal capturing detection circuit, and the switch circuit is controlled to control the communication path between the line communication circuit and the terminal communication circuit. And a control circuit for connecting, and after transmitting information indicating that the line capturing circuit has captured the line, information including a caller number converted into a modem signal, which is input as a voice signal from the line, is transmitted to the line communication circuit, Independently through the circuit switch circuit, terminal communication circuit and polarity reversal transmission circuit
It is configured to send to the telephone .

According to the present invention, a procedure for notifying a caller number such as a polarity inversion or an information reception start signal is performed on a terminal accommodated in an extension in a pseudo manner, and a modem signal of the caller number from the line is directly converted into a voice signal as a terminal signal. Can be sent to

[0010]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the key telephone set according to the present invention. In the figure,
The key telephone 1 is a telephone capable of notifying a caller ID to a single telephone 12 having a caller ID notification function accommodated in an extension, and is connected to a known line 15 capable of notifying a caller ID such as a number display. Even if there is no circuit for receiving the modem signal of the caller number, the information including the caller number can be notified to the single telephone set 12 with the caller number notification function accommodated in the extension.

The single telephone 12 with a caller ID notification function is a general commercially available telephone having a display for displaying the caller number notified by a number display or the like.

The key telephone 1 has a polarity inversion detecting circuit 2 for detecting the inversion of the polarity of the DC voltage supplied from the line 15.
And an incoming signal detection circuit 3 for detecting the presence or absence of the incoming signal based on the voltage level of the incoming signal transmitted from the line 15.
A line capturing circuit 4 for notifying the line 15 that the key telephone 1 is in a response state by flowing a DC current supplied from the line 15, a line communication circuit 5, a communication line switch circuit 6, and a terminal communication. Circuit 7 and terminal capture detection circuit 8
An incoming signal sending circuit 9, a polarity inversion sending circuit 10,
It comprises a control circuit 11.

The line communication circuit 5 extracts a voice signal from the line 15. The communication path switch circuit 6 is connected to the line 1
In order to transmit a voice signal from the telephone number 5 to a single telephone (hereinafter referred to as a terminal) 12 having a caller ID notification function, the communication path is switched and connected. The terminal communication circuit 7 transmits a voice signal from the communication path switch circuit 6 to the terminal 12. The terminal capture detection circuit 8 detects presence / absence of capture based on a DC current supplied to the terminal 12. The incoming signal sending circuit 9 sends an incoming signal to the terminal 12. The polarity inversion sending circuit 10 inverts the polarity of the DC voltage supplied to the terminal 12.

Further, the control circuit 11 receives the detection signal of the polarity inversion of the DC voltage by the polarity inversion detection circuit 2 and detects the presence or absence of an incoming signal from the incoming signal detection circuit 3. Controls the line capturing circuit 4 to notify the line 15 that the
The communication path switch circuit 6 is controlled to transmit the voice signal from the terminal 12 to the terminal 12 side.
Detects that the terminal 12 is in the response state, and controls the incoming signal transmission circuit 9 to transmit the incoming signal to the terminal 12.
The polarity inversion sending circuit 10 is controlled to change the polarity of the DC voltage supplied to the power supply.

Next, the operation of this embodiment will be described with reference to FIG. When there is an incoming call from the line 15 of the caller ID notification, first, the polarity of the DC voltage supplied from the line 15 is inverted. When detecting that the polarity of the DC voltage from the line 15 has been inverted, the polarity inversion detection circuit 2 supplies a polarity inversion detection signal to the control circuit 11. Control circuit 11
When the keypad telephone 1 is in the standby state, when the polarity inversion detection signal is input, it is determined that the caller ID notification is received from the line 15 and the connected terminal 12 is notified of the caller ID notification. In order to notify that there is an incoming call, the polarity inversion sending circuit 10 is controlled to invert the DC voltage supplied from the polarity inversion sending circuit 10 to the terminal 12.

Then, the line 15 is turned on for 0.5 seconds,
An incoming signal (information receiving terminal activation signal) which continues in an alternating cycle of 5 seconds off is input. The incoming signal detection circuit 3 detects the input of the incoming signal and supplies the incoming signal detection signal to the control circuit 11. When the incoming signal detection signal is input, the control circuit 11 sends the incoming signal to the key telephone 1 via the line 15.
, And controls the incoming signal sending circuit 9 to cause the terminal 12 to send the incoming signal.

When the incoming signal is not detected, the control circuit 11 controls the incoming signal detecting circuit 9 to stop sending the incoming signal to the terminal 12. Terminal 12 is a key telephone 1
When the incoming call signal is periodically intermittent, it recognizes that the input incoming signal is an information receiving terminal activation signal.

The terminal 12, which has received the information receiving terminal activation signal, forms a DC loop internally and receives a primary response in order to receive information such as a caller number. When the terminal 12 forms a DC loop, a DC current flows to the terminal 12, and the terminal capture detection circuit 8 detects that the terminal 12 has captured the line by detecting the DC current.

Based on the input of the line capture detection signal from the terminal capture detection circuit 8, the control circuit 11 recognizes that the terminal 12 has made a primary response, notifies the line capture circuit 4 that the primary response has been made, The line acquisition information is transmitted to the line 15. Further, the control circuit 11 controls the communication path switch circuit 6 to transmit a voice signal from the line 15 to the terminal 12, and the communication between the line communication circuit 5 and the terminal communication circuit 7 via the communication path switch circuit 6. Connect the road.

Next, the line 15 receiving the line capture information transmits the information such as the caller number converted into the modem signal to the key telephone 1 as a voice signal. This modem signal (voice signal) is transmitted to the terminal 12 through the line acquisition circuit 4, the line communication circuit 5, the communication line switch circuit 6, the terminal communication circuit 7, and the polarity inversion transmission circuit 10. The terminal 12 restores the received modem signal to information such as a caller number based on a known method, and displays the received information such as the caller number on a display of the terminal 12.

Thereafter, after the call path is once released by the call path switch circuit 6, a ringer signal is inputted from the line 15, and this ringer signal is transmitted to the terminal 1 via the key telephone 1.
2 and causes the terminal 12 to sound a ringtone. Thereby, when the user of the terminal 12 goes off-hook, the terminal 1
2, the terminal capture detection circuit 8 detects that the terminal 12 has gone off-hook by detecting the DC current.

The control circuit 11 recognizes that the terminal 12 has gone off-hook based on the input of the detection signal from the terminal capture detection circuit 8 and notifies the line capture circuit 4 that it has responded. Further, the control circuit 11 transmits the audio signal from the line 15 to the terminal 1.
The communication path switching circuit 6 is controlled to transmit the signal to the communication path 2, and the communication path between the line communication circuit 5 and the terminal communication circuit 7 is connected via the communication path switching circuit 6. Thereafter, a call can be made between the terminal 12 and the caller via the key telephone 1 and the line 15.

As described above, in this embodiment, the procedure of notifying the caller number such as the polarity inversion or the information receiving terminal activation signal to the terminal 12 accommodated in the extension of the key telephone 1 before the start of the call is performed. Further, since the modem signal of the caller number from the line 15 is supplied as it is to the terminal 12 as a voice signal, the caller number can be displayed before the call starts. In addition, since the terminal 12 is a general telephone with a caller ID notification function that is commercially available, the system cost can be reduced.

Next, another embodiment of the present invention will be described. In the above embodiment, the single telephone (terminal) 12 with the caller number display function is one, but the same effect can be obtained with a plurality of terminals. When a plurality of terminals 12 are housed in the key telephone 1, the control circuit 1
1 detects the polarity inversion and the information reception terminal activation signal from the line 15 and sends the polarity inversion and the information reception terminal activation signal to all the terminals 12 accommodated in the key telephone 1.

After confirming that all the terminals 12 accommodated in the key telephone 1 have responded to the primary response by the information receiving terminal activation signal, the control circuit 11 controls the line capturing circuit 4 to make a primary response to the line 15. Inform. Further, the control circuit 11 transmits the audio signal from the line 15 to all the terminals 12.
The communication path switching circuit 6 is controlled to switch the communication path.

Next, the line 15 transmits the information such as the caller number converted into the modem signal to the key telephone 1 as a voice signal. This modem signal is transmitted to all of the plurality of terminals 12 accommodated in the extension through the line acquisition circuit 4, the line communication circuit 5, the communication line switch circuit 6, the terminal communication circuit 7, and the polarity inversion transmission circuit 10. All the terminals 12 restore the received modem signal into information such as a caller number, and display the received information on the display of the terminal itself.

[0027]

As described above, according to the present invention,
Because the procedure for notifying the caller number such as polarity reversal and information reception start signal to the terminal accommodated in the extension was performed in a simulated manner, and the modem signal of the caller number from the line was transmitted to the terminal as a voice signal as it was, The caller ID can be displayed before the call starts. Further, according to the present invention, since a single telephone with a caller ID notification function which is commercially available is used as the terminal, the system cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram of one embodiment of the present invention.

FIG. 2 is a block diagram of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 button telephone 2 Polarity inversion detection circuit 3 Incoming signal detection circuit 4 Line capture circuit 5 Line communication circuit 6 Communication path switch circuit 7 Terminal communication circuit 8 Terminal capture detection circuit 9 Incoming signal transmission circuit 10 Polarity inversion transmission circuit 11 Control circuit 12 Transmission Single phone (terminal) with caller ID notification function 15 Line that can notify caller ID

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-9-149120 (JP, A) JP-A-2000-78627 (JP, A) JP-A-7-203006 (JP, A) JP-A-10-13547 (JP, a) JP flat 10-174134 (JP, a) JP flat 11-252241 (JP, a) JP flat 11-341163 (JP, a) (58 ) investigated the field (Int.Cl. ⁷ H04Q 3/58 101-107 H04M 1/57 H04M 3/42

Claims (1)

(57) [Claims] Claims: 1. A caller is connected to a line capable of notifying a caller ID,
Includes one or more general commercial caller ID notification functions for extensions
A key telephone that accommodates a single telephone when it is in a standby state .
The polarity inversion detecting circuit for detecting the inversion and the voltage level of the incoming signal transmitted from the line ,
An incoming signal detection circuit for detecting the presence or absence of an incoming signal, and a pole for inverting the polarity of a DC voltage supplied to the single telephone.
Gender reversal transmission circuit and incoming signal transmission circuit for transmitting an incoming signal to the single telephone
The direct current is supplied to the single telephone,
Terminal capture detection cycle that detects that a German telephone has captured the line
And information indicating that the single telephone has seized the line.
A line capturing circuit for transmitting to a line, a line communication circuit for extracting a voice signal from the line , a terminal communication circuit for transmitting a voice signal to the single telephone, and a call between the line communication circuit and the terminal communication circuit. Down the road
A switch circuit for connecting or disconnecting, and a detection signal input from the polarity inversion detection circuit,
Inverts the polarity of the output DC voltage of the polarity inversion sending circuit, and
It responds to the presence or absence of a detection signal from the incoming signal detection circuit.
Control the operation of the incoming signal transmission circuit to
Terminal output signal to the single telephone, and captures the terminal.
Activate the line capture circuit based on the detection signal from the detection circuit.
Control and the switch circuit to control the circuit.
Connect the communication path between the line communication circuit and the terminal communication circuit.
Control circuit, and the line capturing circuit captures the line.
After sending the information indicating that
Information containing the entered caller ID converted to a modem signal
Information, the line communication circuit, the communication line switch circuit, the terminal communication
One or more of the above through a talk circuit and a polarity inversion sending circuit
Key telephone for sending to a single telephone
Machine.