JPH1168922A - Telephone equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely radial telephone to a caller when calling is abandoned by the caller before response to incoming call is received. SOLUTION: When a caller's number is transmitted from a subscriber's exchange at the time of the arriving of an incoming call to lines L1 and L1 by the calling of the caller, this telephone equipment receives the caller's number by a modem 9. Then, when the caller abandons the calling, CPU 1 starts a timer 14 for a fixed time. When off-hook is detected in the fixed time and a call back key 19A is operated in addition, the caller's number in the memory 17 is read out and given to a dial circuit 4 to originate a call to the caller.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone device having a callback function for calling a called party.

[0002]

2. Description of the Related Art Generally, when an incoming call arrives at a telephone device, the telephone device notifies the user of the incoming call by ringing the incoming call. Here, when the user notices the incoming call and goes off-hook, an incoming call response is made, and a call is made between the user and the calling side. If the user is in a different room and does not notice the incoming call, the calling side determines that the user is absent and abandons the call, and as a result, the ringing of the telephone device stops.

[0003]

By the way, when a user is in a separate room at the time of an incoming call and goes off-hook due to the notice of the incoming call, the calling party has already abandoned the call, and the user is called off. There was a problem that it was not possible to make a telephone call again. SUMMARY OF THE INVENTION Therefore, an object of the present invention is to accurately call back a calling party when the calling party is abandoned before the incoming call is answered.

[0004]

SUMMARY OF THE INVENTION In order to solve such a problem, the present invention relates to a receiving means for receiving a telephone number of a caller arriving on a telephone line at the time of an incoming call, and a telephone receiving the telephone number by the receiving means. Storage means for storing a number, detecting means for detecting a predetermined operation after a caller abandons the call, and transmitting means for making a call based on the telephone number of the storing means in accordance with the detection output of the detecting means It is. Further, a timer is provided which is started at an arbitrary timing during the duration of the incoming call including the arrival time of the incoming call and measures a certain time, and the sending means is provided with a telephone number of the storing means based on the detection output of the detecting means within the certain time of the timer. Outgoing.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the telephone device according to the present invention. In FIG. 1, the telephone device is provided with a CPU 1. CPU1 has telephone lines (hereinafter, lines) L1 and L via diode bridge DB2.
2, a photocoupler 3 for transmitting the output of a 16 Hz detection circuit 2 for detecting an incoming call, a dial circuit 4, and lines L1 and L
And a BT for detecting a busy tone (BT) from the lines L1 and L2.
A detection circuit 7; a voice detection circuit 8 for detecting voices of the lines L1 and L2; a modem 9 for receiving a caller number to be described later from the lines L1 and L2; and a hold tone circuit 1 for generating a hold tone
2 are connected.

The CPU 14 includes a timer 14, a clock circuit 15, a display circuit 16, a memory 17, a dial key 18, a function key 19, and a hook switch HS2.
Is connected. The apparatus includes a communication circuit 5, an amplifier 13, a buzzer BZ for transmitting a ring tone, and a speaker SP.
Are provided, and the lines L1 and L2 are provided with an open-loop reciprocity detection circuit 10 for detecting polarity reversal when the loops of the lines L1 and L2 are open, and the lines L1 and L2 are closed. A reverse detection circuit 11 for detecting the polarity inversion at the time is connected.

In the telephone device constructed as described above, when off-hook is performed to make a call, the contact of the hook switch HS1 is closed and the DC loops of the lines L1 and L2 are closed. Subsequently, when a dial operation is performed with the dial key 18, the CPU 1 sends the operated destination dial number to the dial circuit 4, and causes the dial circuit 4 to output a dial signal to the lines L1 and L2. As a result, the call of the other party is made and the outgoing call is made by the response of the other party.

On the other hand, when an incoming call arrives at the lines L1 and L2, the incoming signal is sent to the buzzer BZ via the 16 Hz detection circuit 2.
And the buzzer BZ rings. The incoming signal is sent from the 16 Hz detection circuit 2 via the photocoupler 3 to the CPU.
1 and the CPU 1 recognizes the arrival of the incoming call. Here, when the user goes off-hook for answering the incoming call, the contact of the hook switch HS1 is closed and the DC loops of the lines L1 and L2 are closed, so that the incoming call is answered, and the incoming call is started.

[0009] By the way, the present telephone device can receive the caller number arriving on the lines L1 and L2 by the modem 9 at the time of an incoming call as described above. The receiving sequence at that time is as follows. Done. First, when a caller makes a call to the present apparatus, a not-shown local exchange connected to the present apparatus via lines L1 and L2 connects the line L1 and L2.
The polarity of L2 is inverted, and an ID receiving terminal activation signal is output. In the present apparatus, this is called an open-loop
When the detection is performed via the 16 Hz detection circuit 2, the primary response signal is transmitted by closing the DC loops of the lines L1 and L2 by the loop connection circuit 6.

Then, the local exchange transmits the telephone number of the calling party by a modem signal. The modem 9 on the device side
When the caller number is received, the loop closing circuit 6
To release the DC loop of the lines L1 and L2, thereby transmitting a reception completion signal. In response to the transmission of the reception completion signal, the local exchange sends a calling signal (an incoming signal). As a result, the calling signal enters the buzzer BZ via the 16 Hz detection circuit 2, and the buzzer BZ rings. With this ringing sound, the device goes off-hook and the hook switch HS1
When the secondary response is made by closing the contacts of the lines L1 and L2 and closing the DC loops of the lines L1 and L2,
To revert. The reverse polarity of the lines L1 and L2 is detected by the reverse detection circuit 11.

In this way, when a call is received, the calling party number transmitted from the local exchange is received via the modem 9,
It is stored in the memory 17. Here, when the user notices the incoming call and goes off-hook, if the call is already abandoned by the calling side, the call cannot be answered but the memory 17 stores the caller number. Therefore, the caller can be called again based on the number.

FIG. 2 is a flowchart showing the operation when such an incoming call is not answered. The operation of the main part of the present invention will be described according to this flowchart. First, the incoming operation of the CPU 1 in step S1 is performed as follows.
When the caller makes a call to this apparatus, the local exchange switches the polarity of the lines L1 and L2, and outputs an ID receiving terminal activation signal. When the CPU 1 detects this through the open loop pole detection circuit 10 and the 16 Hz detection circuit 2 and the photocoupler 3, respectively, it controls the loop connection circuit 6 to close the DC loops of the lines L1 and L2, A signal is sent to the local exchange.

Then, the local exchange transmits the telephone number of the calling party by a modem signal. This caller number is received by the modem 9 and transmitted to the CPU 1. CPU 1 stores the caller number in memory 17 in step S2. Further, the caller number is displayed on the display circuit 16.
Thereafter, the CPU 1 controls the loop closing circuit 6 to control the line L
The DC loop of L1 and L2 is released, and a reception completion signal of the calling party number is sent to the local exchange. In response to the transmission of the reception completion signal, the subscriber exchange transmits an incoming signal. The incoming signal enters the buzzer BZ via the 16 Hz detection circuit 2, and the buzzer BZ rings. The incoming signal is transmitted to the CPU 1 via the 16 Hz detection circuit 2 and the photocoupler 3.

While the incoming call arrives at the lines L1 and L2 in this way, the CPU 1 constantly monitors the incoming signal for 1 second on and 2 second off, and when the incoming signal is off for 2 seconds or more, the calling side makes a call. It recognizes that the call was abandoned. In step S3, it is determined whether the calling side has abandoned the call. Here, if the call abandonment of the other party is not detected, an off-hook for answering the incoming call, that is, an ON of the hook switch is detected via the hook switch HS2 in step S4, and when this becomes "Y", the hook switch HS2 Interlocking hook switch H
The CPU 1 recognizes that the contact of S1 is closed, and the incoming call is started in step S5 by closing the DC loop of the lines L1 and L2.

However, if abandonment of the other party's call is detected without an incoming call response being detected and "Y" is determined in step S3, the display of the calling party number on the display circuit 16 is erased, and the timer 14 is set in the timer 14 in step S6. Set and start. Then, it is determined in step S7 whether or not the predetermined time has elapsed. If this is "N", it is determined in step S8 whether the hook switch HS is turned on by the user off-hook. Here, if the hook is turned off and the hook switch is turned on, the incoming call response operation is performed when there is no incoming call due to abandoning the other party's call, and the incoming call is not answered. That is, when a user is in a separate room or the like at the time of an incoming call and goes off-hook after noticing the incoming call, he cannot answer the incoming call because the calling side has already abandoned the call.
Therefore, the user operates the callback key 19A in the function keys 19.

Then, the CPU 1 determines that the "callback button pressed" in step S9 is "Y",
At step S11, a calling process for reading out the calling party number (other party phone number) stored in the memory 17 at 0 and sending the calling party number to the dial circuit 4 and sending it to the lines L1 and L2 as dial signals is performed at step S11. Do. Thereafter, it is determined in step S12 whether or not there is a response from the other party. When the response from the other party is detected, an outgoing call is started in step S13.

Then, in step S14 when the outgoing call is made, the caller number in the memory 17 is deleted, and the process ends when the call end in step S15 becomes "Y". If the fixed time of the timer 14 elapses without detecting the off-hook and the determination in step S7 becomes "Y", the calling number in the memory 17 is deleted in step S16.

As described above, when an incoming call is received, the calling party number transmitted from the local exchange is received and stored in the memory 17, and a call-back is made when the incoming call has already been lost at the time of performing the incoming call answering operation. When the key is operated, the caller number in the memory 17 is read and the call is transmitted. As a result, the user is late in noticing the incoming call at the time of the incoming call, and even if the user cannot respond to the incoming call, the user can immediately make a call to the called party by simply operating the callback key and make a call.

In the present embodiment, a timer for counting a certain time is activated when the other party's call is abandoned.
It may be activated at the time of the arrival of the incoming call or at any time from the arrival of the incoming call to the time when the other party abandons the call. Alternatively, the caller number stored in the memory 17 may be read out and dialing may be automatically performed simply by off-hook after the other party has abandoned the call. Further, the caller number displayed on the display circuit 16 is not erased when the other party abandons the call, but is erased at the time of step S16 after a lapse of a predetermined time by the timer 14, so that the user can go off-hook. Thereafter, the user may dial while confirming the caller number displayed on the display circuit 16. Further, in the present embodiment, an analog telephone device has been described as an example, but the same effect can be obtained by applying the present invention to an ISDN telephone device that notifies the other party number when receiving a call.

[0020]

As described above, according to the present invention, the telephone number of a caller arriving on a telephone line at the time of an incoming call is received and stored, and a predetermined operation is detected after the caller abandons the call. , Since the call is made based on the stored phone number, the user will not notice the incoming call at the time of the incoming call,
Even if a call cannot be answered, a call can be immediately made to the called party by simply performing a predetermined operation. Also, a timer is provided which is started at an arbitrary timing during the duration of the incoming call including the arrival time of the incoming call and measures a certain time, and a call is made based on a predetermined operation within the certain time of the timer. The caller can be called again within an appropriate time so that the caller does not leave the place.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a telephone device according to the present invention.

FIG. 2 is a flowchart showing an operation of a main part of the apparatus.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... CPU, 2 ... 16Hz detection circuit, 3 ... Phototransistor, 4 ... Dial circuit, 6 ... Loop closing circuit, 9 ...
Modem, 10 ... open loop reciprocal circuit, 11 ... reverse detection circuit, 14 ... timer, 17 ... memory, 19 ... function key,
19A: Callback key, HS1, HS2: Hook switch, L1, L2: Line.

Claims (2)

[Claims] 1. A telephone device for accommodating a telephone line, detecting an incoming signal arriving at the telephone line based on a call of a caller, and notifying of an incoming call. Receiving means for receiving the telephone number of the caller, storing means for storing the telephone number received by the receiving means, detecting means for detecting a predetermined operation after the caller abandoned the call, and detecting Transmitting means for transmitting a call based on the telephone number of said storage means in accordance with the detection output of said means. 2. The system according to claim 1, further comprising: a timer which is started at an arbitrary timing during the duration of the incoming call including the arrival time of the incoming call and measures a certain period of time, and wherein the transmitting means has a predetermined time within the certain period of the timer. A telephone device for transmitting a telephone number of the storage unit based on a detection output of the detection unit.