JPH0918594A - Call-back repeating system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify complicated call-back operation by temporarily storing a memory with a telephone number that a caller has dialed, calling a specific repeating destination which is previously stored, and sending out the stored telephone number with a called-back calling signal. SOLUTION: The telephone number signal generated by caller's dialing operation on a telephone set 27 is detected by a telephone number signal detecting circuit 11 and stored in a telephone number memory circuit 13. Then when the head part of the telephone number that the caller has dialed is one of 001, 0041, and 0061, a control circuit 22 closes a closing circuit 6 instantaneously and outputs the telephone number stored in a specific telephone number memory circuit 21 through a telephone line 1 to perform automatic calling operation. Consequently, the specific repeating destination which is set to the side of the U.S. is called and a hook switch 4 is released at the moment a calling signal tone is detected twice. Then the U.S.-side specific repeating destination automatically dials the telephone number of the preset telephone set 27.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention eliminates the complexity of a caller hanging up or receiving a call in a call-back system in which a particular party is called and the particular party calls back. The present invention relates to a call-back system that can be used, and a call-back system that makes the above call-back available from a third phone.

[0002]

2. Description of the Related Art In addition to personal identification such as computer communication and improvement of security, when there is a difference in telephone charges depending on the area, when the call is cheaper from the other party, the other party After calling the destination once, it is common to hang up and wait for the call from the other party to receive the call. Further, at present, as a low-priced call service using a call-back utilizing a charge difference, there is a call-back system that dials the telephone number of the other party to call again after receiving the incoming call as described above.

[0003]

In this case, since it is necessary to register in advance the telephone number of the call-back destination to the specific call-back destination, the call-back destination is fixed uniquely. It is impossible to use the above-mentioned callback from a telephone that is out of the office, a public telephone, or the like, other than a telephone that is called back.

Further, the above-mentioned method requires complicated telephone operations such as making a call to a specific destination, disconnecting the line when a calling sound is given a predetermined number of times, and waiting for a call back. However, when the above-mentioned callback service is received, it is necessary to dial the telephone number of the other party again, which is troublesome.

The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a system that simplifies the complicated operation of a callback and can use the callback even for an arbitrary telephone. To aim.

[0006]

In order to solve the above problems, the callback relay system of the present invention calls a caller whose specific relay destination is registered in advance in response to the caller's telephone call. In a call back call relay system, a telephone number signal detection circuit that detects a telephone number signal dialed by a caller, a telephone number memory circuit that stores the telephone number signal, and a specific relay destination telephone number are stored in advance. A specific telephone number memory circuit to be stored, a PB tone signal generating circuit to generate a PB tone signal corresponding to the telephone number stored in the specific telephone number memory circuit, and a calling signal from a specific relay destination which is returning. If the telephone number dialed by the caller is a specific telephone number string, it will be closed. Memory, and the telephone number of a specific relay destination stored in advance from the specific telephone number memory circuit is converted into a PB tone signal to make a call, the specific relay destination is called, and then the call back is returned. After the closing circuit is closed by a calling signal from a specific relay destination, the telephone number stored in the telephone number memory circuit is processed as necessary and transmitted as a PB tone signal. It features.

The call-back relay system of the present invention is a call-back relay system that calls back a caller whose specific relay destination is registered in advance in response to the caller's telephone call. Detects the calling signal from
A closing circuit for closing the telephone line, a message memory circuit for storing a prerecorded reply message, a voice conversion circuit for converting the reply message into voice, and a telephone number sent from the caller. A telephone number signal detection circuit for detecting a signal, a telephone number memory circuit for storing the telephone number signal, a specific telephone number memory circuit for storing a specific relay destination telephone number in advance, and a storage for the telephone number memory circuit A PB tone signal generating circuit for generating a PB tone signal corresponding to the telephone number being dialed, a closing circuit for detecting a call signal from a specific relay destination coming back and closing the telephone line, The telephone line signal from the caller and the connection circuit for connecting the line from the specific relay destination are connected to each other, and the telephone number signal sent from the caller is temporarily stored in the memory. Then, the telephone number of the specific relay destination stored in advance from the specific telephone number memory circuit is read out, converted into a PB tone signal to make a call, and the specific relay destination is called and then returned to the specific telephone number. After the closing circuit is closed by the calling signal from the relay destination,
After the telephone number stored in the telephone number memory circuit is processed as necessary and transmitted as a PB tone signal, the line from the caller in the hold state and the line from a specific relay destination are connected. It features.

[0008]

According to the callback relay system of the present invention,
The caller hangs up, receives a call back,
It is not necessary to perform a complicated operation such as dialing the telephone number of the other party again, and it is also possible to use the callback from any telephone such as a telephone at the destination or a public telephone.

[0009]

【Example】

(Embodiment 1) First, in FIG. 1, 1 is a telephone line, 2 is a connection terminal, 3 is a diode bridge circuit, 4 is a hook switch, 5 is a speech network circuit for switching the input and output terminals of voice and various signals. A general telephone 27 is connected to. Reference numeral 7 is an incoming circuit, which detects a calling signal, 6 is a closing circuit which opens and closes the hook switch 4 based on detection of an incoming signal of the incoming circuit 7 and control of a control circuit 22 described later, and 8 is a telephone. A telephone number signal detecting circuit for detecting a telephone number signal associated with a dial operation on the general telephone 27 by being connected to a speech network circuit and detecting a partner state detecting circuit for detecting the off-hook or ringing tone of the other party via the line 1. Further, a telephone number signal converting circuit 12 for converting the telephone number signal detected by the telephone number signal detecting circuit 11 into a telephone number numeral string based on a concordance table, and stores the telephone number numeral string thus converted. The telephone number memory circuit is 13.

Reference numeral 20 denotes a PB tone signal generating circuit, which performs an automatic dial operation according to the operation control of a control circuit 22 described later to generate a PB tone signal corresponding to a desired telephone number. Reference numeral 21 is a specific telephone number memory circuit, which stores a specific relay destination telephone number which has been set to call back beforehand. The PB tone signal generating circuit 20 receives the specific telephone number memory circuit 21 according to an instruction from the control circuit 22. Also, the telephone number data is read from the telephone number memory circuit 13, converted into a PB tone signal, and output. Reference numeral 22 denotes a control circuit, which is an operation of each circuit constituting the callback relay system having the speech network circuit 5, the telephone number signal detection circuit 11, the telephone number signal conversion circuit 12, the telephone number memory circuit 13 and the PB tone signal generation circuit 20. It is a circuit for controlling, and in this embodiment, a microcomputer (CPU) is used for this control circuit.

In this embodiment, a special telephone number memory circuit is registered with a specific relay side telephone number set to call back in advance, and a ringing tone is generated twice at this specific relay side. When the line is disconnected at, the ordinary telephone 27 is set to be called automatically. Further, in the present embodiment, the above-mentioned specific relay destination is installed in, for example, the United States, which has a large difference in call rates, and it is preset to connect the above-mentioned callback line to the public line in the United States. Further, in this embodiment,
0, which is the international call code as the target number for the callback
01, 0041, and 0061 are registered, and the control circuit 22 is programmed so that the callback is activated when this station number is input.

Next, the operation of the callback relay system of the present invention will be described with reference to FIGS. 1, 2 and 3. 2 illustrates the communication operation between the general telephone 27 shown in FIG. 1, the callback system of the present invention, and a specific relay destination, and FIG. 3 shows the processing flow of the callback system of the present invention. Is shown.

The telephone set 27 of the caller goes off-hook, and the telephone number signal generated by the dialing operation of the caller is detected by the telephone number signal detection circuit 11 via the telephone line 28-speech network circuit 5. The telephone number signal detection circuit 11 used in this embodiment is a DTMF for detecting old dial pulse signals and PB tone signals.
A tone receiver having both functions was used. The telephone number signal detected by the telephone number signal detecting circuit 11 is converted by the telephone number signal converting circuit 12 into a number string of telephone numbers based on the concordance table. It is determined whether or not the telephone number stored in the telephone number memory circuit 13 and converted further corresponds to the telephone number corresponding to the specific station number, and the determination result is output to the control circuit.

When the judgment result of the telephone number signal detecting circuit 11 is negative, the control circuit instantly closes the closing circuit 6 and the telephone number memory circuit 13
The telephone number once stored in the PB tone signal generating circuit 20 is read as it is, and a PB tone signal corresponding to the telephone number is generated, which is connected to the speech network circuit 5-hook switch 4-diode bridge circuit 3-connection. The terminal 2 outputs the data through the telephone line 1 to perform an automatic transmission operation, and the telephone network 28 and the hook switch circuit 29 are connected by the speech network circuit 5. By doing so, when the caller dials a telephone number that does not correspond to the call back, it can be used as it is as a general telephone.

If the judgment result in the telephone number signal detection circuit 11 is applicable, that is, the leading number of the telephone number dialed by the caller is 001, 0041 or 006.
In the case of corresponding to any one of 1, the processed telephone number is stored in the telephone number memory circuit 13 after the following processing. The processing contents are 001 and 0 described above.
When the call-back target registration numbers 041 and 0061 are input as the leading numbers of the dial, the telephone number memory circuit 13 is made to store the numbers other than the leading registration numbers. Then, the control circuit 22 instantly closes the closing circuit 6 and causes the PB tone signal generating circuit 20 to read the telephone number stored in the specific telephone number memory circuit 21, and the PB tone corresponding to the telephone number. A signal is generated and is output via the speech network circuit 5-hook switch 4-diode bridge circuit 3-connection terminal 2-telephone line 1 to perform an automatic transmission operation. By this operation, a specific destination (relay destination) installed in the United States is called and the telephone line 1-
The calling signal sent via the connection terminal 2-diode bridge circuit 3-hook switch 4 is detected by the partner situation detection circuit 8, and the control circuit 22 is called by the partner situation detection circuit 8.
The hook switch 4 is instantly operated to release the hook circuit 4 when the ringing signal sound detected at 2 is detected twice. As a result, the specific relay destination on the American side automatically calls the preset telephone number of the telephone set 27.

The call signal from the specific relay destination is supplied to the incoming circuit 7 through the telephone line 1 and the connecting terminal 2-diode bridge circuit 3, and the incoming call signal is transmitted to the control circuit 22. . Based on this, the control circuit 22 operates the closing circuit 6 to close the hook switch 4 and connect it to a specific relay destination via the telephone line 1. Next, the control circuit 22 displays the telephone number memory circuit 13
Originally, the telephone number 12 stored in is sent to the PB tone signal generating circuit 20 with "1" which is the area code of the United States. However, in the case of this embodiment, it is operated by the caller. Since the inputted dial number is "1", which is the country code of the United States, is added next to 001, 0061, 0041, the telephone number stored in the telephone number memory circuit 13 should be modified. PB as it is
The tone signal generating circuit 20 is read to generate a PB tone signal corresponding to the telephone number, and this is output via the speech network circuit 5-hook switch 4-diode bridge circuit 3-connection terminal 2-telephone line 1. In addition, by operating the speech network circuit 5 to connect the telephone line 28 and the hook switch side line 29, the line 28-speech network circuit 5-line 29-hook switch 4-diode bridge circuit 3 -A call can be made via the connection terminal 2-telephone line 1.

(Embodiment 2) This embodiment is based on claim 2 and is a system in which a callback can be used from any telephone. First, in FIG.
1'is a telephone line, 2'is a connection terminal, 3'is a diode bridge circuit, 4 and 23 are hook switches,
5 and 19 are speech network circuits for switching input and output terminals of voice and various signals, 7 and 25 are incoming circuits for detecting a calling signal, and 6 and 24 are incoming and closing operations of the hook switches 4 and 23. Detection of incoming signals of circuits 7 and 25 and control circuit 22 described later
Is a closed circuit based on the control of the other party, 8 is a partner situation detection circuit that detects the off-hook or ringing tone of the other party through the telephone line 1, and 9 is a message memory circuit of various response messages at the time of automatic response. Read from and convert to analog voice signal and speech network circuit A
5 is a voice conversion circuit for outputting to 5. 11 is a general telephone (not shown) connected to the speech network circuit A5
-Telephone line 1-Connecting terminal 2-Diode bridge circuit 3
-Hook switch 4-A telephone number signal detection circuit for detecting a telephone number signal sent through the speech network circuit A5. The telephone number signal detection circuit 11 used in this embodiment detects an old dial pulse signal. And PB
It has both functions of a DTMF tone receiver that detects a tone signal. Further, there is a telephone number signal conversion circuit 12 for converting the telephone number signal detected by the telephone number signal detection circuit 11 into a telephone number numeral sequence based on a concordance table, and the converted telephone number numeral sequence is stored therein. The telephone number memory circuit is 13.

Reference numeral 14 denotes an ID code, a code number, and an operation code (dial signal) added to the speech network circuit 5.
Is detected by the telephone number signal detection circuit 11 and converted into a predetermined number sequence by the telephone number signal conversion circuit 12, and then the converted ID code, recitation number and operation code, and these ID code and recitation number in advance, Operation code and remaining call count,
The code signal identification circuit that outputs the result of comparing and identifying the ID code, the code number, and the operation code read from the code signal memory circuit 15 storing the An external output for outputting the call time and the like to the outside, 17 is a connection circuit for connecting the speech network circuit A5 and the speech network circuit B19, and 18 is a digital value from the control circuit 22 for the connection time and the remaining connectable time from the control circuit 22. It is a voice synthesizing circuit for synthesizing the voice based on the output and outputting it to the speech network circuit A5.

Reference numeral 20 denotes a PB tone signal generating circuit, which automatically operates a dial according to the operation control of a control circuit 22 described later to generate a PB tone signal corresponding to a desired telephone number. Reference numeral 21 is a specific telephone number memory circuit, which stores a specific relay destination telephone number which has been set to call back beforehand. The PB tone signal generating circuit 20 receives the specific telephone number memory circuit 21 according to an instruction from the control circuit 22. The telephone number data is read from the telephone number memory circuit 13, converted into a PB tone signal, and output to the general line 1'through the speech network circuit B19. Reference numeral 22 is a control circuit, which includes closing circuits 6 and 24, speech network circuits 5 and 19, a voice converting circuit 9, various message memory circuits 10, a telephone number signal detecting circuit 11, a telephone number signal converting circuit 12, and a telephone number memory circuit 13. , The code signal identifying circuit 14, the code signal memory circuit 15, the external output 16, the connecting circuit 17, the voice synthesizing circuit 18, the PB tone signal generating circuit 20, and other circuits that constitute the callback system of the present invention. Circuit, and in this embodiment, a microcomputer (C
PU) is used.

In this embodiment, a special telephone number memory circuit is registered with a specific relay side telephone number set to call back in advance, and a ringing tone is generated twice on this specific relay side. When the line is disconnected at, the incoming circuit B25 is set to be automatically called via the general line 1 '. "This is the International Telephone Center. Please enter your membership number.", M-
2 is "Please enter your password", M-3 is "your remaining call frequency", M-4 is "frequency", M-5 is "destination phone number" Please enter. ”, And M-6 has the message“ Please wait a moment, so I will connect you. ”Is registered in advance, and the member number“ 00 ”will be stored in the code signal memory circuit.
“0001” and “1000” are registered as a code number, and the remaining call frequency of the member of “000001” is 10
It is set to 0. Further, in the present embodiment, the above-mentioned specific destination is set in the United States, which has a large difference in call rates, and it is preset to connect the above-mentioned callback line to the public line in the United States. Further, in this embodiment, the general telephone lines 1 and 1'are single lines, but the present invention is not limited to this, and there is no problem even if they are used as multiple lines.

The operation of the second embodiment will be described below. When a call signal is transmitted from the caller's telephone (not shown) by the caller dialing the telephone number of the international telephone center, the call signal is transmitted via the telephone line 1.
It is supplied to the incoming circuit A7 via the connection terminal 2-diode bridge circuit 3, and the incoming of the calling signal is transmitted to the control circuit 22. As a result, the control circuit 22 operates the closing circuit A6 to close the hook switch 4,
The speech network circuit A5 and the caller's telephone are connected via the telephone line 1. Then, the control circuit 22 puts the M-1 bank of the various message memory circuits 10 into the read state, converts this into an analog voice message by the voice conversion circuit 9 and adds it to the speech network circuit A5, and the hook switch 4-diode. Send a response message to the caller through the bridge circuit 3-connecting terminal 2-telephone line 1 to the caller saying, "This is the International Telephone Center. Please enter your membership number." . In response to the end of the reproduction of the response message, the control circuit 22 sends a beep tone signal to the calling party through the speech network circuit A5, erases the telephone number memory circuit 13 and waits for the telephone number signal detection circuit 11. Let the state. In such a state, when the caller listens to the beep tone and then dials and sends out the membership number "000001" through the caller's telephone, the membership number is carried out through the telephone line 1. After being added to the example speech network circuit A5 and detected by the telephone number signal detection circuit 11, the telephone number signal conversion circuit 12 converts it into a predetermined number string and sends it to the code signal identification circuit 14.

The code signal identification circuit 14 searches and judges whether or not the number coded with the sent member number is registered in the code signal memory circuit, and the judgment result is the control circuit 22.
Output to When the judgment result of the code signal identifying circuit 14 is negative, the control circuit 22 sets the M-1 bank of the various message memory circuits 10 to the read state again, and the voice converting circuit 9 sends this to the analog voice message. In addition to the speech network circuit A5, the hook switch 4-diode bridge circuit 3-
Calling the caller's telephone via connection terminal 2-telephone line 1, send a response message to the caller, "This is the International Telephone Center. Please enter your membership number." And call again. Prompt the person to enter the membership number and output a beep tone.

After that, when the control circuit 22 receives the judgment output indicating that the code signal identifying circuit 14 is invalid in the sign of the member number by the same processing as described above, the control circuit 22 operates the closing circuit A6 to make the hook. The switch 4 is released. When the code signal identification circuit 14 receives an output indicating that the code can be determined, the control circuit 22 puts the M-2 bank of the various message memory circuits 10 into the read state, and causes the voice conversion circuit 9 to read this. It is converted to an analog voice message and added to the speech network circuit A5, and the caller's telephone sets "input a code number" to the caller through the hook switch 4-diode bridge circuit 3-connection terminal 2-telephone line 1. please."
And send the message. Then, in response to the completion of the reproduction of the message, the control circuit 22 sends a beep tone signal to the calling party through the speech network circuit A5 and puts the telephone number signal detection circuit 11 into a standby state. In such a state, after the caller listens to the beep tone, the code number "1" is displayed on the caller's telephone.
When the "000" is dialed and transmitted, the password is added to the speech network circuit A5 of the present embodiment via the telephone line 1 and is detected by the telephone number signal detection circuit 11 and then by the telephone number signal conversion circuit 12. It is converted into a predetermined number string and sent to the code signal identification circuit 14. The code signal identification circuit 14 determines whether or not the number coded as the sent recitation number matches the number registered in the recitation number of the member number, and outputs the determination result to the control circuit 22. If the result of this determination is negative, the operation of inputting the code number is repeated again. As a result, if the determination in the code signal identification circuit 14 is negative again, the same operation as if the member number did not match. Accordingly, the control circuit 22 releases the hook switch 4 and disconnects the line. When the code signal identifying circuit 14 receives an output indicating that the code number can be determined, the control circuit 22 causes the closing circuit B2 to operate.
4 is operated to close the hook switch 23 and read a specific relay destination telephone number stored in the specific telephone number memory circuit, and the PB tone signal generation circuit 20 causes the specific relay destination telephone number to be read. A PB tone signal corresponding to the number is added to the speech network circuit B19 to automatically make a call through the hook switch 4-diode bridge circuit 3-connection terminal 2-telephone line 1.

When a calling signal is sent to a special relay destination installed on the US side by the operation of this automatic calling, the calling sound of the calling is detected by the partner situation detection circuit 8, and the calling sound of the calling is given. Is detected twice, the control circuit 22 operates the closing circuit B24 to release the hook switch 23. By such an operation, a specific relay destination in the United States automatically makes a call to a callback destination registered in advance, and when a call signal from the specific relay destination is detected by the incoming circuit B25 by this, the control circuit 22 Operates the closing circuit B24 to close the hook switch 23.

In parallel with the operation of automatically calling to these specific relay destinations, the control circuit 22 continues to receive the output of the code number of the code signal identification circuit 14 and subsequently the various message memory circuits 10 of the various message memory circuits 10. The M-3 bank is set to the read state, and this is converted into an analog voice message by the voice conversion circuit 9, and the speech network circuit A5 is used.
In addition, hook switch 4-diode bridge circuit 3
-Connecting terminal 2-Telephone line 1 allows the caller's telephone to send a message to the caller saying "Your remaining call frequency is", and subsequently control circuit 22 causes code signal memory circuit. From "15", which is the remaining number of calls corresponding to the member number, is read out from 15, and this is sent to the voice synthesizing circuit 18 to synthesize an analog voice signal and this "hyaku" is added to the speech network circuit A5. Again, M- of various message memory circuits 10
With the four banks being read, the stored message "frequency" is converted into an analog voice message by the voice conversion circuit 9 and added to the speech network circuit A5, and the hook switch 4-diode bridge circuit 3 is provided to the caller. -Connecting terminal 2-Transmitting through the telephone line 1 so that the calling party can hear "Your remaining available call frequency is only 100%."

Subsequently, the control circuit 22 controls the various message memory circuits 10 in the same manner as the above messages.
From the M-5 bank, read the message data of "Please enter the telephone number of the other party.", Convert it into an analog voice message by the voice conversion circuit 9 and add it to the speech network circuit A5. Then, in response to the end of reproduction of the message, the control circuit 22 sends a beep tone signal to the calling party via the speech network circuit A5 and puts the telephone number signal detection circuit 11 into a standby state. In such a state, after the caller listens to the beep tone sound and dials and sends out the desired destination telephone number to make a call via the telephone set of the caller, the destination telephone number is the telephone line 1. It is added to the speech network circuit A5 of the present embodiment via the telephone number signal detection circuit 11 and then converted into a predetermined number sequence by the telephone number signal conversion circuit 12 and stored in the telephone number memory circuit 13. . When the telephone number is stored or finished, the control circuit 22 reads from the M-6 bank of the various message memory circuits 10 as with the above messages, "Please wait, so please wait."
Message data of and read out this message data
At, it is converted into an analog voice message, added to the speech network circuit A5, and sent to the caller.

As a result, the control circuit 22 stores the desired telephone number of the caller after the hook switch 4 is closed in response to the call from the specific relay destination. The telephone number data is read from the telephone number memory circuit 13, the area code 1 is added to the head of this data, and the data is sent to the PB tone signal generation circuit 20.
The PB tone signal corresponding to the added telephone number is transmitted to the speech network circuit B19-hook switch 23-.
The data is sent to a specific relay destination via the diode bridge circuit 3'-connection terminal 2'-telephone line 1 '. The PB tone signal of the telephone number thus sent is automatically called to the telephone number destination coded in the above PB tone signal because it is connected to a public line in the United States from a specific relay destination in the United States. The Rukoto.

In this way, the control circuit 22 controls the telephone number P
At the same time as outputting the B tone signal, the connection circuit 17 is operated to connect the speech network circuit A5 and the speech network circuit B19, whereby the telephone line 1
And telephone line 1'can be connected. At the same time, the control circuit 2
2 starts the time measurement, measures the time until the caller disconnects the telephone line, and outputs the measured time at the end of the call to the external output together with the member number and the telephone number stored in the telephone number memory. To do. By the above processing, the caller finally receives the caller's telephone-telephone line 1-speech network circuit A5-connecting circuit 17-speech network circuit B19-telephone line 1'-specific destination-American public line -You can have a conversation over the other party's phone,
In this case, the speech network circuit B19-
Telephone line 1'-Because there is a call-back between the specified parties in the United States, there is a difference in the rates between Japan and the United States, and by using the discount service due to the time difference, the call charges etc. are greatly reduced. it can. Although the present embodiment was carried out in the United States, the present invention is not limited to this, and in the case of a charge gap, etc.,
It goes without saying that this effect can be obtained at any place.

[0029]

【The invention's effect】

(A) The call-back relay system of the present invention is used to make or disconnect a call, receive a call again, etc.
No need for complicated operations such as entering phone numbers,
Anyone can easily use the callback in order to call back automatically and connect by simply operating the telephone as usual.

(B) In the callback, since the telephone of the callback destination is limited due to its mechanism, it is impossible to make a call using the callback from any telephone. With the callback relay system, it is possible to make a call using the callback from any telephone.

[0031]

[Brief description of the drawings]

FIG. 1 shows a circuit configuration of an embodiment (embodiment 1) described in claim 1 of the present invention.

FIG. 2 illustrates a communication operation in the entire callback system according to the first exemplary embodiment.

FIG. 3 shows a processing flow in the first embodiment.

FIG. 4 shows a circuit configuration in an embodiment (embodiment 2) described in claim 2 of the present invention.

FIG. 5 illustrates a communication operation in the entire callback system according to the second exemplary embodiment.

FIG. 6 shows a processing flow in the second embodiment.

[Explanation of symbols]

 1, 1'telephone line 2, 2'connection terminal 3, 3'diode bridge circuit 4, 23 hook switch 5, 19 speech network circuit (A, B) 6, 24 closed circuit (A, B) 7, 25 incoming call Circuits (A, B) 8 Opponent situation detection circuit 9 Voice conversion circuit 10 Various message memory circuits 11 Telephone number signal detection circuit 12 Telephone number signal conversion circuit 13 Telephone number memory circuit 14 Code signal identification circuit 15 Code signal memory circuit 16 External output 17 Connection Circuit 18 Voice Synthesis Circuit 20 PB Tone Signal Generation Circuit 21 Specific Telephone Number Memory Circuit 22 Control Circuit 27 Telephone 28 Telephone Side Line 29 Hook Switch Side Line 30 Callback System of This Embodiment 31 Specific Relay Destination 32 Called Person's phone

Claims (2)

[Claims] 1. A call back relay system in which a specific relay destination responds to a telephone call of a caller and returns a call to a caller in which a specific relay destination is registered in advance. A telephone number signal detection circuit for detecting,
A telephone number memory circuit for storing the telephone number signal, a specific telephone number memory circuit for storing a specific relay destination telephone number in advance, and a PB tone corresponding to the telephone number stored in the specific telephone number memory circuit. A telephone number dialed by the above-mentioned caller, which comprises a PB tone signal generating circuit for generating a signal and a closing circuit for detecting a calling signal from a specific relay destination coming back to close the telephone line. If it is a specific telephone number string, this is temporarily stored in memory, and the specific telephone number memory circuit reads out a specific relay destination telephone number and stores it in the PB.
After converting to a tone signal and calling, and calling a specific relay destination, the telephone number memory circuit is closed after the closing circuit is closed by the call signal from the specific relay destination returned and returned. A call back relay system, which processes a telephone number stored in, and sends it as a PB tone signal. 2. A call back relay system, which responds to a telephone call of a calling party and returns a call to a calling party whose specific relay destination is registered in advance, detects a calling signal from the calling party. , A closing circuit for closing the telephone line, a message memory circuit for storing a prerecorded reply message, a voice converting circuit for converting the reply message into voice, and a telephone sent from the caller. A telephone number signal detection circuit for detecting a number signal, a telephone number memory circuit for storing the telephone number signal, a specific telephone number memory circuit for storing a specific relay destination telephone number in advance, and the telephone number memory circuit A PB tone signal generation circuit that generates a PB tone signal corresponding to the stored telephone number and a call signal from a specific relay destination that is returning to the call are detected, and the telephone number is called. A telephone number signal sent from the caller, comprising a closing circuit for closing the line and a connecting circuit for connecting the telephone line from the caller and the line from the specific relay destination. It is temporarily stored in memory, the telephone number of a specific relay destination stored in advance is read from the specific telephone number memory circuit, converted into a PB tone signal, and the call is made. After the closing circuit is closed by a calling signal from the specified relay destination, the telephone number stored in the telephone number memory circuit is processed as necessary and transmitted as a PB tone signal. A callback relay system, wherein a line from a caller in the hold state and a line from a specific relay destination are connected.