JPS6218159A - Automatic answering telephone set - Google Patents

Abstract

PURPOSE:To prevent mischief or disturbance by limiting the input number of times of an ID code so as to inhibit accessing when the ID code is inputted so as to record/reproduce a message from an external telephone set. CONSTITUTION:When the reproduction of the reply message is started, while the reply message is reproduced, a CPU41 awaits the input of a # key of a caller. When the # key is depressed, the reproduction of the reply message is stopped to zero an error counter. Then the ID code is checked and when it is in error, a generation circuit 25 forms a beap signal to allow the opposite telephone set to ring an alarm tone representing the ID code input error. In depressing the # key, the input of the ID code is made again possible and the telephone call is cut off when ID code is in error three times. When the input of the ID code is in error, when the # key is depressed within a specified time, the re-input is made possible and the telephone call is disconnected after that for safety purpose.

Description

[Detailed description of the invention] The explanation will be given in the following order.

A. Industrial application field B. Summary of the invention C Conventional technology D. Problem that the invention aims to solve E. Means to solve the problem (Figure 1) F. Effect G Example G1 first embodiment (Fig. 1, Fig. 2) G2 other examples Effect of H invention A. Industrial application field The present invention relates to an answering machine.

B. Summary of the Invention This invention provides a security function by limiting the number of times an ID code (identification code) can be entered in an answering machine that can perform various functions from an external so-called telephone. This is what I did to get it.

C. Conventional technology An answering machine has a built-in tape recorder, and when a call is received, it plays back a message from the tape informing the other party that you are not home (hereinafter referred to as the "response message"), and then The message from the other party regarding the business (hereinafter referred to as the "message") is recorded on tape.

Furthermore, some answering machines are designed so that messages recorded while the user is away can be listened to from a telephone outside the home.

That is, when reproducing a business message from an external telephone, the telephone answering machine is called, and when the answering machine is connected, the remote controller is placed on the transmitter of the external telephone and the playback switch on the remote controller is pressed. Then,
A control sound instructing reproduction of the message is output from the remote controller, and this control sound is supplied from the transmitter to the answering machine through the telephone line. Then, the answering machine plays the message, and the playback signal is sent to the external telephone via the telephone line (
Ru. Therefore, you can listen to the business message from an external telephone.

Therefore, for example, if the people you want to contact are away from home and cannot be easily contacted, you can use the recording and playback functions for external messages to make contact relatively easily. You will be able to take

However, when listening to business messages from an external telephone, a remote controller is required as mentioned above.
If you forget this, you will not be able to listen to the message. Conversely, if someone else prepares a remote controller, they can also listen to the message.

Therefore, by informing a specific party of the ID code (identification code) in advance and pressing the dial key of a tone line telephone (so-called butshuphone) according to the ID code, the message can be heard even from an external telephone. It is possible to do so. That is, by doing this, there is no need for a remote controller, and the user can freely listen to business messages from an external telephone at any time. Furthermore, unless the correct ID code is entered, the business message cannot be heard from an external telephone, making it safe.

On the other hand, a system has been proposed in which a semiconductor memory is provided in place of the tape recorder so that response messages and message messages can be accessed. That is,
In this way, response messages and business messages can be accessed instantaneously, without having to wait. Furthermore, since it uses semiconductor memory, it does not need to be bulky like a tape recorder, and can be made to be almost the same size as a regular telephone.

Furthermore, it has excellent durability and high reliability.

However, if you record message messages in semiconductor memory in this way, if you are able to record long message messages, the semiconductor memory will have a large capacity.
It is inappropriate in terms of cost.

Therefore, in reality, the memory for message messages is 8
It will be possible to record about seconds.

However, if the recording time of the message message is short like this, once the message message is recorded, it will no longer be possible to record the message message, causing problems such as not being able to convey important messages. will occur.

Therefore, in this case as well, it has been considered to allow the user to record the business message after inputting the ID code.

In this way, by introducing the idea of an ID code into an answering machine, it is possible to improve its functions, uses, and safety.

D Problems to be Solved by the Invention However, if it is possible to record or play back business messages from an external telephone by inputting an ID code as described above, it is possible to record or play a business message from an external telephone without knowing the correct ID code. While inputting the ID code, the correct ID code can be input and the message can be recorded or played back.

This invention attempts to solve these problems.

E. Means to Solve the Problems Therefore, in the present invention, the number of times the ID code can be input is limited.

F If the number of times the ID code is entered exceeds the limit, the call will be disconnected.

G Embodiment G1 First Embodiment In FIG. 1, (1) shows a telephone line, and (2) shows an answering machine according to the present invention.

In this device (2), (11) is a dial key for inputting the other party's telephone number, etc., (12) is an encoder that converts the key output into a DTMF signal, (
13) is a handset's transmitter, and (14) is a built-in microphone used when talking while on-hook. In addition, (21) is a 2-wire to 4-wire conversion circuit composed of, for example, a hybrid transformer, (22) is a relay contact corresponding to a hook switch, (23) is the relay, and (25) is the formation of a beep sound signal. It is a circuit.

Furthermore, (31) is a detection circuit (ring detector) that detects a call from the ring tone signal when the caller receives a call; When, the linga that announces this,
(33) is a decoder that decodes the DTMF signal; (33) is a decoder that decodes the DTMF signal;
4) is the receiver of the handset, and (35) is a speaker used when listening to the other party's voice while on-hook.

Mata (40) is a system controller that is composed of a microcomputer and controls the operation of the entire device, (4th grade) is its CPU, (42) is a ROM in which various programs are written, (43) is a RAM for a work area, (44) is an input port, and (45) is an output port, and these circuits (42) to (45) are connected to the CPU (41) through a system bus (46). Note that the routine (100) of the flowcharts shown in FIGS. 2 and 3 is also written in the ROM (42), and as will be described later, this routine (100) is used to (41) is executed.

Furthermore, (51) is a hook switch, (52A) ~ (
52N) is a non-lock type bush switch for performing various operations, and (53A) to (53M'') are LEDs that display the operating status of this device.

Furthermore, (61) is R where the response message is accessed.
AM, (62) is the RA where the message is accessed.
M, (63) is a D/A converter, (64) is an A/D converter, and (70) is a memory controller. This controller (70) is also configured by a microcomputer, and according to commands from the controller (40), the RAM ( 6
1) Select, read/write, and specify addresses in (62). In addition, RAM (61),
For example, the length of the message that can be accessed in (62) is 8
Seconds.

Further, (91) to (97) are switch circuits, which are not shown in the figure, but are connected to the controller (40) and are switched to predetermined contacts by the controller (40).

Then, when this device is in a standby state, step (101) is performed in the routine (100).

(102) is repeated.

That is, the step (lot) is the detection circuit (31)
In the step of checking whether there is an incoming call based on the output of
(192) performs the processing of sections (II), (X), and (XI) of the processing of sections (1) to (XI) to be described later, and when there is no incoming call, the processing continues at step (1).
Proceed to 02). This step (102) consists of (n), (
In the step of checking whether there is a request for processing other than the item
Proceed to step 101, perform the corresponding processing, and then proceed to step (101).
), and if there is no such request, the process returns directly to step (101).

Therefore, when in the standby state, step (10
1) and (102) are repeated.

The contents and procedures of the processing in sections (I) to (x1) are as follows.

(1) When in the normal call waiting state, from the main unit (2) to the handset (1)
3) Picking up (34) turns on the hook switch (51), which is detected by the controller (40). Then, drive voltage is supplied from the controller (40) to the relay (23) through the amplifier (24), the contact (22) is turned on, and the line (1) is connected to the conversion circuit (21) through the contact (22). At the same time, the switch circuit (91) is activated by a control signal from the controller (40).

(92), (95), and (96) are connected to the "0" contact as shown.

Then, when the other party's telephone number is input using the dial key (11), the key output is supplied to the encoder (12) and converted into a DTMF signal, and this signal is sent to the conversion circuit (2).
1) and to the line (1) through the contact (22).

When the other party answers the call, the voice signal from the transmitter (13) is transmitted from the switch circuit (91) to the amplifier (15).
) - switch circuit (92) → conversion circuit (21) - contact (
22) to the line (1). Also, the audio signal from the other party is transmitted from line (1) to contact point (2).
2) - Conversion circuit (21) - Switch circuit (95) → amplifier (36) → switch circuit (96) is supplied to the receiver (34) through the signal line. In other words, this is the state of the conversation with the other party.

Then, when the call was over, I set the handset (13)
, (34) is placed on the main body (2), the switch (51
) is turned off, this is detected by the controller (40) and the drive of the relay (23) is stopped, and the contact (
22) is turned off.

(n) When you receive a call from the other party when you are in the normal incoming call standby state,
In step (101), the signal of the bell sound is detected by the detection circuit (31), and the detection output is supplied to the controller (40).

Then, the processing of the CPU (41) proceeds from step (lol) to step (111), and this step (111)
The automatic answer mode hook "AAMF" which indicates whether to automatically answer or not is checked, and in this case it is a normal incoming call and the flag AAMF has been reset.
The process proceeds from step (111) to step (112), and in this step (112') the controller (
40) controls the ringer (32) to ring a bell to indicate that there is an incoming call.

During this time, the processing of the CPU (41) is performed in step (1).
12), proceed to step (113), and then step (11).
3) to (115') are repeated. That is, step (113) is a step for determining whether the on-hook state or the on-footer state is present by checking the output of the hook switch (51), and when the on-footer state is present, the process proceeds from step (113) to step (113). Proceed to (114). This step (114) will be described later, but during the call, the process continues in step (114).
) to step (113) and therefore during the call to step (113).

(114”) is repeated.

Then, when the handsets (13) and (34) are picked up, the hook switch (51) is turned on, which is detected by the controller (40) in step (113) and the processing of the CPU (41) is carried out in step (11).
3) to step (121), and this step (1
At step 21), the ringer (32) stops ringing. Next, the process proceeds to step (122), and in this step (122), the controller (
40) turns on the contact (22), and the switch circuits (91), (92), (95)
, (96) are connected to the "0" contact. Therefore, from now on, the call will be in the same state as when the call was made.

During this call, the stepper (123) continues to check the hook switch (51).

Then, after the call, hand cent (13).

(34) is returned to the body (2), this is the step (
123), the process proceeds to step (124), where the contact (22) is turned off, and then the process returns to step (101) to enter a standby state.

Further, when steps (113) and (114) are repeated and the other party hangs up, the detection circuit (31)
), but this is step (114
), the process returns from step (114) to step (101) and enters a standby state.

(I) Recording of response message While on-hook, response message switch (52A)
Turn on. Then, this is the controller (40
) and the response message flag OGMF is checked. This flag OGMF is RAM (61)
This is set when a response message is being recorded, and is reset when no response message is being recorded.

When this flag OGMF is set, no response message can be recorded.

However, when the flag OGMF is reset, the switch circuits (91) and (94) are connected to the "1" contact and indicate that the controller (4o) is recording a response message from the controller (70). A command is supplied to R from the controller (70).
A chip select signal, a write signal, and an address signal for selecting AM (61) are supplied.

Next, when you speak a response message into the microphone (14) while turning on the switch (52A), the voice signal is transmitted from the microphone (14) to the switch circuit (9).
1) → Amplifier (15) → Switch circuit (94) is supplied to the A/D converter (64) through the signal line and converted from an analog signal to a digital signal, and this signal is R
The data is supplied to AM (61) and written sequentially. Note that during this writing, the LED (53A) is made to blink by the output of the controller (40) to indicate that the response message is being recorded (written).

When the 8 seconds of writing is completed, data indicating this is supplied from the controller (70) to the controller (40). Then, the controller (40) connects the switch circuits (96) and (97) to the "1" contact, controls the formation circuit (25) and forms a beep signal, and this signal is transmitted to the switch circuit (97). )−
The signal is supplied to the speaker (35) through the amplifier (36)-switch circuit (96) signal line.
A sound called "bee" is produced to indicate the end of recording the response message. Furthermore, the flag OGMF.

AAMF is sent and the LED (53A) is lit continuously.

When the recording of the response message is completed in this way, the switch (52A) is turned off.

Thereafter, it will be in a standby state. Note that when the switch (52A) is pressed again, the LED (53A) is turned off.

:■) Confirmation (playback) of the contents of the response message Turn on the playback switch (52B) while on-hook. Then,
When a response message is recorded, the flag OG
Since MF is set, switch circuit (93)
, (96) is connected to the "1" contact, and at the same time, a command indicating that the response message is to be played back is supplied from the controller (40) to the controller (70), and the controller (70) stores this in the RAM (61). A chip select signal, a read signal, and an address signal are supplied to select the chip.

Therefore, the response message signals of the RAM (61) are sequentially read out, and are supplied to the D/A converter (63) to be converted from a digital signal to an analog signal. - Speaker (35) through the signal line of the switch circuit (96)
and a response message is played back from the speaker (35).

When the reproduction of the response message is completed, data indicating this is transferred from the controller (70) to the controller (4).
0) and then enters a standby state.

Note that when the response message is not recorded in the RAM (61), the flag OGMF is reset.
When this flag OGMF is reset, the beep signal from the formation circuit (25) is transmitted to the switch circuit (97).
)-amplifier (36)-switch circuit (96) to the speaker (35).
5) makes a beeping sound, indicating that no response message has been recorded.

(V) Clearing the response message Turn on the switch (52A) while turning on the clear switch (52C) while remaining on-hook.

Then, the flag OGMF is reset, and from then on, the RAM
Regardless of the contents of (61), it is assumed that the response message has not been recorded. Also, LED (53A)
is turned off.

(l Turn on the switch (52A) with the automatic response mode and reset on hook. Then,
The flag OGMF is checked, and when the flag OGMF is being sent, the flag AAMF is inverted, that is, if the flag AAMF had been reset, it is set, and since it was set, it is sent. When the flag AMMF is set, the automatic response mode is set, and when the flag AMMF is reset, the automatic response mode is canceled.

Note that when the flag OGMF is checked and it is reset, the response message recording mode is entered as described in section (I[[).

Also, when the flag AAMF is set, LE
D (53A) is lit, and is turned off when being reset.

(■) ID code registration The ID code is an arbitrary 3-digit decimal number, but this ID
When registering a code, the ID code is e.g.
616J, turn on the ID switch (52F) and press the dial key (11) *, 6. 1. 6. *, 6. 1. 6
Press like this. Then, this key output is sent to the encoder (1
2) and encoded into a DTMF signal, this signal is supplied to the decoder (33) through the conversion circuit (21) and decoded into a signal indicating the corresponding key of the dial key (11), and this signal is sent to the controller ( 40) and its ID code r616 is stored in the data area of the RAM (43).

This ID code should be notified in advance to anyone who needs it.

(■) Reproduction of message message In this section, for convenience of explanation, we will explain how to play the message message prior to recording the message message.

While on-hook, turn on the playback switch (52D). Then, the flag ICMP indicating whether the business message is recorded is checked, and in this case,
Since the business message has been recorded and the flag ICMP has been sent, the switch circuits (93) and (9
6) is connected to the “1” contact, and the controller (
40) supplies the controller (70) with a command indicating that the message is to be reproduced, and the controller (70) supplies the RAM (62) with a chip select signal, a read signal, and an address signal to select this. .

Therefore, the message messages in the RAM (62) are sequentially read out, supplied to the D/A converter (63) and converted from digital signals to analog signals, and further processed by the switch circuit (93)-amplifier (36). )→Speaker (35) through the signal line of the switch circuit (96)
and the message is reproduced from the speaker (35).

When the reproduction of the business message is completed, data indicating this is transferred from the controller (70) to the controller (70).
0) to the controller (40), and thereafter enters a standby state.

Note that when the business message is not recorded in the RAM (62), the flag ICMP is reset.
When this flag ICMP is reset, a beep signal from the forming circuit (25) causes the speaker (35
) will make a beeping sound, indicating that the message has not been recorded.

(IX) Clear the message. Turn on the record switch (52E) while turning on the clear switch (52G) with the footer still on. Then, the flag ICMF is reset, and from then on, the RAM (
62), it is assumed that the message is not recorded. Further, the LED (53C) is turned off.

(X) Receiving calls in automatic answering mode If the device (2) is set to automatic answering mode, the caller can receive a message by operating the dial keys of the telephone according to the prescribed procedure. Recording, playback, and erasing can be performed, and if the dial keys are not operated, only the response message will be played. Next, these will be explained in sections (1) to (v).

(i) Only playing the response message This is when you do nothing after dialing the telephone number. That is, when there is an incoming call, the processing of the CPU (41) is as follows:
Proceeding from step (101) to step (111),
In the automatic response mode, the flag AAMF is set, so the process goes from step (111) to step (14).
1), in this step (141) the contact (22) of the relay (23) is turned on, the line (11) is connected to the conversion circuit (21), and then in step (142)
), the switch circuit (92) is connected to the "1" contact, the switch circuit (93) is connected to the "0" contact, and (
As in the case of item IV), a command indicating that the response message is to be played is supplied from the controller (40) to the controller (70), and therefore the RAM (61)
The response message signals of D
/A converter (63) - switch circuit (93) - switch circuit (92) - conversion circuit (21) - contact (22)
is sent out to line (1) through the signal line.

Therefore, you will hear a response message from the receiver of the other party's telephone.

In this case, if the caller has been informed of the ID code in advance, while this response message is being played, the caller can press the dial keys on the telephone to
Press the # key, then press the number keys to enter the ID code.

Then, the key output is converted to a DTMF signal and sent to line +11, but this DTMF signal is
l) - Contact (22) - A signal is supplied to the decoder (33) through the signal line of the conversion circuit (21) and decoded into a signal indicating the corresponding key, that is, an ID code signal,
This signal is supplied to the controller (40).

During this time, the processing of the CPU (41) is performed in step (1).
42) to step (143), and this step (
At step 143), it is checked whether or not an ID code has been sent, and if it has not been sent, the process proceeds to step (144) where data indicating the end of playback of the response message is transferred from the controller (70) to the controller (40). If the ID code has not been sent, the process returns to step (143"). Therefore, step (14") is continued until the ID code is sent or the response message is finished playing.
3) and (144) are repeated.

However, since the person on the other end of the call did not enter an ID code, the response message ends 8 seconds after step (142), and the data indicating this is sent to the controller (7).
0) to the controller (40), the process proceeds from step (144) to step (145) following the end of the response message, and this step (145)
The switch circuit (9) is activated by the controller (40) at
2), (97) are connected to the "0" contact, and the formation circuit (25) is controlled to form a beep signal, and this signal is transmitted from the switch circuit (97) to the amplifier (
15) → It is sent to line (1) through the signal line of switch circuit (92) - conversion circuit (21) - contact (22), and the other party's telephone makes a tone indicating the end of the response message. .

The process then proceeds to step (146) where the contact point (22
) is turned off, the process returns to step (101), and thereafter enters the standby state again.

Therefore, if you enter your phone number and do nothing while the response message is being played, i.e.
If no code is given, only the response message will be played. Note that this is used to prevent prank calls, etc.

(ii) Recording a business message This is done when the caller enters the ID code and then presses the "*" key on the dial key of the telephone while the response message is being played. be exposed.

That is, when the response message is being played,
Steps (143) and (144) are repeated, but at this time, when the caller enters the ID code, the process of the CPU (41) advances from step (143) to step (151) and then steps ( 151)～(1
54) is repeated. In this case, step (151)
is a step of determining whether the caller has pressed the "*" key on the telephone by checking the output of the decoder (33), and if the "*" key has not been pressed, the process is as follows: Proceed to step (152). This step (152) and the following step (153')
, (154) will be described later, but when the caller has not pressed any dial key, the process moves from step (152) to step (153).

(154) and returns to step (151). Therefore, after inputting the ID code, steps (151) to (1)
54) is repeated to wait for a command.

Then, when the caller presses the "*" key after inputting the ID code, this is determined in step (151), and the process proceeds from step (151) to step (1).
61), and in this step (161) the flag ICMP is checked. And this flag ICM
When P has been reset, the process proceeds to step (1
61) to step (162), and this step (
162), the controller (40) switches the switch circuits (92), (97).

is connected to the “0” contact, and the forming circuit (25)
is controlled to form a beep signal, and this signal is transmitted through the switch circuit (97) - amplifier (15) - switch circuit (9).
2) The signal is sent to line (1) through the signal line of conversion circuit (21) and contact (22), and is sent from the other party's telephone.
A sound indicating the start of recording the message is sounded.

Subsequently, the process proceeds to step (163), and in this step (163), the switch circuit (94) is connected to the "0" contact, the switch circuit (95) is connected to the "1" contact, and the controller (40) is connected to the "1" contact. (7o)
A command indicating that a message is to be recorded is supplied to the controller (70), and a chip select signal, a write signal, and an address signal for selecting the command are supplied to the color RAM (62).

Therefore, when the person on the other end of the phone speaks the matter according to the signal tone to start recording, the voice signal is transmitted from line (1) to contact point (22).
) - conversion circuit (21) -> switch circuit (95) - switch circuit (94) - is supplied to the RAM (62) through the signal line of the A/D converter (64), and the message of the other party's business is stored in the RAM (62) are written sequentially.

When the 8 seconds of writing is completed, data indicating this is supplied from the controller (70) to the controller (40). Then, in step (164), a beep signal is sent from the formation circuit (25) to the line (11) to notify the other party that the recording of the business message has ended, and in the next step (165), the flag ICMF is set and , the LED (53C) is turned on, and then in step (166) the contact (22) is turned off,
Thereafter, the process returns to step (101) and is placed in a standby state.

Furthermore, when the flag ICMP is sent in step (161), the message has already been recorded and a new message cannot be recorded.
Processing starts from step (161') to step (167)
In this step (167), the forming circuit (2
5), a beep signal with a beeping sound is formed, and this signal is sent to the line (11), and the other party's telephone makes a beeping sound indicating that the message cannot be recorded, and then Processing is step (151
), steps (151) to (154) are repeated again to wait for a command.

(iii) Playback of message message This is done when the caller enters the ID code and then presses the "#" key on the dial key of the telephone while the response message is being played. be exposed.

That is, after entering the ID code, step (151)
Steps (154) to (154) are repeated to wait for a command, but step (152) is a step for determining whether the caller has pressed the "#" key on the telephone based on the output of the decoder (33). Yes, if the "#" key is pressed after entering the ID code, this will be the step (152)
The process proceeds from step (152) to step (171). In this step (171), the flag ICMP is checked. If the flag ICMP is set, the process proceeds from step (171) to step (172). In this step (172), a beep signal from the formation circuit (25) is sent to the line (1), and the other party's telephone makes a "beep" sound indicating the start of playback of the message. The process then proceeds to step (173) and switches to the switch circuit (92).
is connected to the "L" contact and the switch circuit (93) is connected to the "0" contact, and at the same time, a command indicating that the message is to be played back is supplied from the controller (40) to the controller (70). ) to RAM (
62) are supplied with a chip select signal, a read signal, and an address signal for selecting this.

Therefore, the message messages in the RAM (62) are sequentially read out, supplied to the D/A converter (63), where the digital signals are converted into analog signals, and the switch circuit (93) - switch circuit ( 92)-
The message is sent to the line (1) through the signal line from the conversion circuit (21) to the contact (22), so that the message can be heard from the other party's telephone.

Then, when the playback of the message is finished, the data indicating this is transferred to the controller (70) and the color controller (4).
0), the process proceeds to step (174), and in this step (174), a beep signal is formed by the forming circuit (25), and this signal is sent out to the line (11) and the other party's telephone transmits a "beep signal". '' is sounded to signal the end of playing the message, and then the process returns to step (151), and again to step (151).
) to (154) are repeated to wait for a command.

Note that when the business message is not recorded in the RAM (62), the flag ICMP is reset.
If this flag ICMP has been reset, this is determined in step (171) and the process proceeds to step (175), where the beep signal from the formation circuit (25) causes the other party's phone to emit a beeping sound. Then, the user is informed that no message has been recorded, and thereafter steps (151) to (154) are repeated again to wait for a command.

(iv) Deletion of business message This occurs when the caller enters the ID code and then presses the "0" key on the dial key of the telephone twice while the response message is being played. It will be held on.

That is, after inputting the ID code, step (151'
I ~ (154) is repeated and the state is waiting for a command, but step (153) determines whether the caller has pressed the "0" key on the telephone twice based on the output of the decoder (33). This is a determination step. After inputting the ID code, if the "0" key is pressed twice, this is determined in step (153), and the process returns to step (153).
Proceed to step (181) from this step (181).
), a beep signal is taken out from the forming circuit (25) and sent to the line (11), and the other party's telephone makes a "beep" sound indicating deletion of the message.Then, the process proceeds to step (182). Go to Flag I
After CMP is reset, the process returns to step (151), and thereafter steps (151) to (154) are sent back to wait for a command.

Therefore, if you try to record a message, but it has already been recorded and you cannot record a new message, the message is played back in step (iii), and then deleted in step (iv). Then, a new business message can be recorded according to (ii).

(v) Auto-off of the line This means that the command waiting state is set for a specified period, e.g.
If this continues for a few seconds, the call will be hung up for safety reasons.

That is, when steps (151) to (154) are repeated, the number of repetitions is equal to step (151).
4), and if this number of repetitions corresponds to within 30 seconds of the specified time, the process proceeds to step (
154) returns to step (151) to continue repeating, and when the predetermined period is exceeded, the process proceeds to step (191) where the contact (22) is turned off.
Thereafter, the process returns to step (101) and enters a standby state.

As described above, by inputting the ID code even from an external telephone, it is possible to record, play, and delete business messages. In this case, in order to limit the number of times the ID code is input, for example, step (143) is constructed as shown in FIG.

That is, when the reproduction of the response message starts in step (142), the processing of the CPU (41) proceeds to step (301), and in this step (301), by checking the output of the decoder (33), the caller's telephone It is determined whether the "#" key of the
1), proceed to step (144) and complete this step (1).
In step 44), it is checked whether or not the reproduction of the response message has been completed, and if it has not been completed, the process returns from step (144) to step (301). Therefore, while the response message is being played back, the caller is waiting for input of the "#" key on the telephone.

Then, when the "#" key of the caller's telephone is pressed, this is determined in step (301), and the process proceeds from step (301') to step (302).
In this step (302), the controller (40)
A command to stop the reproduction of the response message is supplied to the controller (7o) to stop the reproduction of the response message, and then in step (303'I)
An error counter ERRC indicating the number of errors when manually inputting the D code is reset to rOJ.

The process then proceeds to step (304) where the decoder (
By checking the output of step 33), it is determined whether the caller pressed the dial key of the telephone and entered the ID code correctly. When the ID code was entered correctly, the process moves from step (304) to step (151).
Then, as described above, commands for recording, playing, and erasing the message are awaited.

However, if the ID code input in step (304) is incorrect, the process returns to step (304).
Proceed to step (305) from this step (305
), a beep signal is formed by the formation circuit (25), this signal is sent to the line (1), and the other party's telephone produces a warning tone indicating an ID code input error.

Then, the process proceeds to step (306), where the error counter ERRC is incremented by "1", and then proceeds to step (307).
The error counter ERRCO value is checked at
When ERRC≦2, the process advances from step (307) to step (308), and in this step (308) it is determined whether the "#" key of the caller's telephone was pressed by checking the output of the decoder (33). is determined and the "#" key is pressed, the process returns from step (308) to step (304). Therefore, step (304) allows the caller to enter the ID code again, and if the correct ID code is entered, the process moves from step (304) to step (
151).

In this way, even if the ID code is entered incorrectly, it is possible to re-enter the ID code by pressing the "#" key.

However, in this case, each time the ID code is input incorrectly, the error counter ERRC is incremented in step (306), and the error counter ERRcO value is checked in step (307).
When RC≧3, that is, if the IC code is input incorrectly three times, the process proceeds from step (307) to step (145).
), and as a result of this step (145), the caller's telephone makes a beeping sound, and the process proceeds to step (14).
6), the call will be hung up.

Further, if the "#" key is not pressed in step (30B), the process proceeds from step (308) to step (309), and in this step (309''), the key input in step (304) is pressed. The elapsed time is checked, and if it is within a predetermined time, for example 30 seconds, the process returns to step (308''), and if the predetermined time has been exceeded, the process continues through step (145) to step (146). Proceed to.

Therefore, if you make a mistake in entering the ID code, you can re-enter the ID code by pressing the "#" key within the specified 30 seconds, but after that the call will be disconnected for safety reasons.

Similarly, in step (304), step (
If there is no key power within a predetermined time after the key power is available in step 301), the process proceeds from step (304) through step (145) to step (146) and the telephone is disconnected.

As described above, according to the present invention, even from an external telephone, by pressing the dial key and inputting the ID code, it is possible to record, reproduce, and erase business messages. Furthermore, in this case, especially according to the present invention, if the ID code is entered incorrectly three or more times, the message cannot be accessed, so it is safe from mischief or interference by a third party.

Furthermore, response messages and business messages can be accessed using a RAM (61) instead of a tape recorder.
(62), access can be done instantaneously, and there is no waste when making long-distance calls, for example.

G2 Other Embodiments In the above description, converters (63) and (64) can share their main parts. Also, for example, the switches (52A) and (52E) can be connected to the LED (53A"
).

(53C) can also be made self-illuminated. moreover,
When the flag OGMF has been reset in step (131), steps (161'') to (166''
) It is also possible to record a response message from an external telephone in the same way as recording the business message.

H Effects of the Invention According to this invention, even from an external telephone, by pressing the dial key and inputting the ID code,
You can record, play, and delete business messages. Moreover, in this case, especially according to the present invention, the ID
If the code is entered incorrectly three or more times, the message cannot be accessed, so it is safe from mischief or interference by third parties.

Furthermore, response messages and business messages can be accessed using a RAM (61) instead of a tape recorder.
(62), access can be done instantaneously, and there is no waste when making long-distance calls, for example.

[Brief explanation of drawings]

FIG. 1 is a system diagram of an example of the present invention, and FIGS. 2 and 3 are flowcharts for explaining its operation. (1) is the telephone line, (11) is the dial key, (13)
is a transmitter, (34) is a receiver, (40) is a system controller, (61) and (62) are RAM, (63) is a
) is a D/A converter, and (64) is an A/D converter. Agent Irufuji Sada t9.・"Li. ・、；－炙゛′ Same as Hidemori Matsukuma...

Claims (1)

[Claims] Recording and playback means and DTM sent from an external telephone
and a decoder that decodes the F signal and outputs a signal indicating which key of the dial keys has been pressed, and when in the first mode, a response message signal is recorded in the recording and reproducing means, and the automatic When a call is received while in answering mode, the answering message signal is played back from the recording and reproducing means and sent out to the telephone line, and the caller receives a predetermined code from the external telephone using the dial keys. The input of the signal is checked and when the above caller inputs the correct code signal,
Messages can be accessed from the external telephone to the recording and reproducing means through the telephone line, and when checking the input of the code signal, the number of times the code signal is incorrectly input is counted; An answering machine that disconnects the telephone line when the count reaches a predetermined value.