JPH0319746B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an automatic dialing device.

[Conventional technology]

Conventional automatic dialing devices include, for example, push-button telephones. This push-button telephone automatically converts the entered telephone number into a dial signal and sends it to the communication line, when the desired subscriber's telephone number is input by operating the push-button as necessary. Once a communication line is selected, a call can be made via the handset. In addition, push-button telephones are used as automatic dialing devices not only for telephone calls but also for facsimile communications and the like.

[Problem that the invention seeks to solve]

However, with such conventional automatic dialing devices, if you make a mistake in pressing the pushbutton or enter an incorrect telephone number, the exchange naturally selects a communication line corresponding to a subscriber other than the desired subscriber. At night, it would cause trouble to the other party, and if a document was accidentally sent by facsimile to an unrelated third party, the confidentiality of the communication could not be maintained.

[Means for solving problems]

The present invention has been made in view of the above-mentioned problems, and provides an automatic dialing device that can prevent a communication line from being selected when a telephone number of a subscriber who does not belong to a specific subscriber group is input. The purpose is to

In order to achieve this object, the present invention has a first aspect of the present invention, in which the exchange selects a communication line based on a dial signal from a dialing device, and the communication line is connected between the dialing devices of the calling side and the called side. out of the identification codes held in the holding means of the dialing device of the calling party and assigned to subscribers belonging to a specific subscriber group, the identification code that identifies the calling party or the called party is sent via the communication line. When this identification code arrives, the dialing device on the receiving side checks whether this identification code matches any of the identification codes held by the holding means, and if they match, The communication line is switched from the dialing device side to the communication device side, and the matching identification code or the predetermined identification code held by the holding means is sent back to the dialing device on the calling side, while the dialing device on the calling side It is checked whether the returned identification code matches any of the identification codes held by the holding means, and when they match, the communication line is switched from the dialing device side to the communication device side.

As shown in FIG. 1, the second invention includes an input means 2 for accepting a destination number, and a storage means 1 for storing telephone numbers of subscribers belonging to a specific subscriber group.
a first confirmation means 3 for checking whether a telephone number corresponding to the destination number accepted by the input means 2 exists in the storage means 1; and an identification code assigned to a subscriber belonging to a specific subscriber group. and a predetermined identification code held by the holding means 7, which converts the telephone number corresponding to the destination number received by the input means 2 into a dial signal and sends it to the exchange via a communication line. a transmitting means 4 for transmitting the received identification code to the called party, and a receiving means 7 for holding the received identification code.
a second confirmation means 8 for confirming a match with the identification code held in the transmission means 4; a reply means 9 for returning the identification code via the transmission means 4; and a switching means for switching the communication line from the automatic dialing device side to the communication device side. 5, and when the transmitted identification code is received, the second confirmation means 8 confirms that the received identification code matches one of the identification codes held by the holding means 7. , the matching identification code or the predetermined identification code held by the holding means 7 is sent back to the calling party by the replying means 9, and the switching means 5 switches the communication line to the communication device side, while the returned When an identification code is received, the second
After the confirmation means 8 confirms that the returned identification code matches one of the identification codes held in the holding means 7, the switching means 5 switches the communication line to the communication device side.

[Effect]

The operation of the present invention will be explained.

In the automatic dialing device on the calling side, input means 2 receives the destination number corresponding to the telephone number.

The first confirmation means 3 confirms whether a telephone number corresponding to the destination number received from the input means 2 exists in the storage means 1.

The phone number corresponding to the destination number is stored in storage means 1.
When the first confirmation means 3 confirms that the telephone number exists, the transmission means 4 converts the telephone number into a dial signal and sends it to the exchange via the communication line.

Then, the exchange selects the communication line corresponding to the received telephone number. Therefore, the automatic dialing device of the called party is selected.

Further, the transmitting means 4 transmits the identification code from the holding means 7 to the automatic dialing device of the receiving side via the communication line and the exchange.

In the automatic dialing device on the receiving side, when an identification code arrives from the automatic dialing device on the calling side, the second confirmation means 8 checks whether the identification code and the identification code from the holding means 7 match.

When it is confirmed that the identification codes match, the replying means 9 transmits the identification code from the holding means 7 to the transmitting means 4.
to be sent via .

Thereafter, the switching means 5 switches the end of the communication line from the automatic dialing device side to the communication device 6 side.

In the automatic dialing device on the calling side, when the identification code arrives from the called side, the second confirmation means 8 checks whether the identification code and the identification code from the holding means 7 match.

When the second confirmation means 8 confirms that the identification codes match, the switching means 5 switches the end of the communication line from the automatic dialing device to the communication device 6.

Therefore, both communication devices 6 start transmitting and receiving information via the communication line and the exchange.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

FIG. 2 shows a system diagram of a communication system using an automatic dialing device according to the present invention. 11 is an exchange, L ₁ and L ₂ are communication lines, and automatic dialing devices 10 and 10 having the same configuration are installed at the ends of the communication lines L ₁ and L ₂ .
R are connected to each other. As the communication device 6, a facsimile 12 is connected to the automatic dialing device 10 via a cable _l1 , and a facsimile 12R having the same configuration as the facsimile 12 is connected to the other automatic dialing device 10R via a cable _l2 . There is.

The following description assumes that information is transmitted from the facsimile 12 to the facsimile 12R. That is, the automatic dialing device 10 is on the calling side, the facsimile 12 is on the sending side, and the automatic dialing device 1 is on the sending side.
0R operates as a receiving side, and facsimile 12R operates as a receiving side.

The configuration of the automatic dialing device 10 is shown in FIG.
The configuration of the automatic dialing device 10R is shown in FIG. 4, and the external plan view is shown in FIG. 5.

First, in FIG. 3, 22 stores up to 6000 sets of telephone numbers of subscribers belonging to a specific subscriber group and one abbreviated telephone number (hereinafter referred to as "abbreviated number") corresponding to each subscriber group, and stores a CMOS element 22. It is a RAM composed of This RAM22 is connector 2
1, the storage means 1 of the present invention is realized.
In the present invention, "telephone numbers of subscribers belonging to a specific subscriber group" refers to the telephone numbers of subscribers who are expected to make or receive calls; for example, it refers to all telephone numbers at the head office or each branch office. be. The RAM 22 is designed so that its stored contents are guaranteed even during transportation or during a power outage due to the backup action of a battery 23 composed of a nickel-cadmium battery or the like. Further, writing of telephone numbers and abbreviated numbers into the RAM 22 is done in advance using a predetermined writing device (description omitted), and is distributed in advance to locations where the automatic dialing device 10 is installed, for example, the head office or each branch office. ing. Note that the automatic dialing device 10 also allows writing of abbreviated numbers and telephone numbers using a registration function, which will be described later.

The automatic dialing device 10 also includes a connector 21.
Expansion connector 21 connected to bus 20 in the same way as
It is possible to add RAM 22 via a. Then, with the RAM copy function described later,
The information stored in the RAM 22 is transferred to the connector 21.
It is now possible to copy at high speed to the RAM 22 added to A.

Furthermore, the own abbreviated number assigned to the automatic dialing device 10 can be stored in a predetermined location of the RAM 22 by the self-registered number registration function described later, and the RAM 22 can store the own abbreviated number assigned to the automatic dialing device 10 by the self-registered number registration function described later. A holding means 7 for holding an identification code assigned to a person is realized. That is,
In this embodiment, each abbreviated number is used as the identification code. Note that the identification code does not need to be limited to an abbreviated number, but may be any code that indicates that it belongs to a specific subscriber group. Therefore, the same number that is uniformly assigned to a specific subscriber group Younger numbers may have the same code.

Reference numeral 18 denotes a keyboard for inputting information such as abbreviated numbers to the automatic dialing device 10, and specifically, as shown in FIG. are doing. This keyboard 18 realizes the input means 2 in the present invention. However, in this embodiment, the telephone numbers of subscribers belonging to a specific subscriber group are used as abbreviated numbers.
Operability is improved by registering in RAM22. Therefore, when calling a desired subscriber belonging to a particular subscriber group, the abbreviated number assigned to that subscriber is entered on the keyboard 18. The function key 13 is connected to the RAM 22.
Registration key 4 used when registering an abbreviated number to
1. Confirmation key 42 used to confirm various registered contents in RAM 22 and instruct forced communication to be described later; End key 43 used to instruct termination of various operations; It consists of a TEL key 44 used for

A microprocessor 14 performs arithmetic processing based on input information from the keyboard 18 and programs stored in the ROM 15, and also controls various devices and circuits connected to the bus 20 based on the arithmetic results. Let's do it. The control functions are listed below.

Numeric keypad 4 of the automatic dialing device 10 on the calling side
When inputting an abbreviated number from 7, the abbreviated number is searched in the RAM 22, and if a match is confirmed, the function reads out the telephone number corresponding to the abbreviated number (this realizes the first confirmation means 3 in the present invention). ing).

When a call is made to the automatic dialing device 10R on the called side, it is confirmed that the abbreviated number included in the reply signal received from the automatic dialing device 10R on the called side matches the abbreviated number accepted by the keyboard 18. function (this implements the second verification means 8 in the present invention).

In the above, when a match is confirmed, a function of outputting a drive command to drive the relay contact 33 from the position shown by the solid line to the position shown by the dotted line via the relay drive circuit 34 described later.

When a call is made from the automatic dialing device 10 on the calling side, the automatic dialing device 10 on the called side
In R, there is a function to confirm the match between the abbreviated number included in the calling signal and the abbreviated number assigned to the automatic dialing device 10R on the called side (this implements the second confirmation means 8 in the same way as described above). ).

In the above, when confirming a match, the abbreviated number assigned to the automatic dialing device 10R on the receiving side is read from the RAM 22 and sent to the automatic dialing device 10 on the calling side via the PB signal oscillator 30, which will be described later. ).

After the above, a function of outputting a drive command for driving the relay contact 33 from the position shown by the solid line to the position shown by the dotted line via the relay drive circuit 34 described later.

30 is the PB signal oscillator, which has the function of converting the telephone number read from the RAM 22 by the microprocessor 14 into a PB signal and sending it to the communication line _L1 via the network control unit 32, which will be described later; This realizes the transmitting means 4 in the present invention.

32 is the network control unit (hereinafter referred to as "NCU"), which has a loop detection function, an incoming call detection function, an RG output function, and a polarity reversal detection function. After this NCU 32 receives a start command from the microprocessor 14 via the bus 20, it wires the PB signal from the PB signal oscillator 30.
w ₇ , terminal A of relay contact 33 in normal state,
C. Wiring W ₅ , communication line L ₁ via connector 35
It also transmits the PB signal from the automatic dialing device 10R on the called side to the communication circuit _L2 , the exchange 11,
When receiving the PB signal via the communication circuit L ₁ , the connector 35, the wiring W ₅ , the terminals A and C of the relay contact 33 in the normal state, and the wiring W ₄ , the PB signal is sent to the PB signal oscillator 31 (described later) via the wiring W ₆ . It also has a function to output to.

31, after the exchange 11 selects the communication line _L2 ,
PB signal from converter 11 is connected to communication line L ₁ , connector 35 , wiring W ₅ , and relay contact 3 in normal state
3 terminals C, A, wiring W ₄ , NCU32, wiring W ₆
The PB signal receiver receives the PB signal via the PB signal receiver, demodulates it into a digital signal, and sends it to the microprocessor 14. Reference numeral 34 denotes the relay drive circuit, which, when receiving a drive command from the microprocessor 14, causes current to flow through the built-in coil, while cutting off current to the coil when a reset command from the microprocessor 14 is received. 33 indicates a relay contact of the relay drive circuit 34, and a solid line indicates a normal state. Note that A, B, and C indicate terminals of the relay contact 33. When the relay drive circuit 34 receives a drive command from the microprocessor 14, the communication line _L1 is switched from the automatic dialing device 10 to the facsimile 12 side. Then, the microprocessor 14, the relay drive circuit 34, and the relay contact 3
3 realizes the switching means 5 in the present invention.

Terminal B of relay contact 33 is connected to facsimile 12 via connector 36 and cable _l1 . In addition, terminal B of this relay contact 33 is wired
It is connected to the RG detection circuit of the NCU 32 via W ₁ and W ₃ and further to the loop detection circuit of the NCU 32 via the wiring W 2 .

15 is a ROM that stores the program for the microprocessor 14; 16 is a counter circuit with a counting function; 17 is a liquid crystal display with a two-stage 16-digit display capacity; A printer for printing history and various proof lists; 28 is a counter timer circuit having calendar and timer functions; and 29 is a battery made of a nickel-cadmium battery or the like to guarantee calendar information and the like even in the event of a power outage. 20 is a bus.

24 is a power supply unit that supplies DC voltage to various devices and various circuits in the automatic dialing device 10;
The fuse 26 further receives the voltage through the power switch 25, rectifies and smoothes it, and supplies a DC voltage. still,
Reference numeral 46 is a pilot lamp which indicates that DC voltage is supplied and the automatic dialing device 10 is ready for operation. 35 is a connector for connecting the communication line _L1 to the automatic dialing device 10, and 36 is a connector for connecting the cable _L1 from the facsimile 12. The other end of the communication line _L1 is connected to an exchange 11 as shown in FIG. An automatic dialing device 10R on the receiving side is connected to this exchange 11 via a communication line _L2 . The configuration of this automatic dialing device 10R is the same as that shown in FIG. 3, and the external plan view is also the same as that shown in FIG. 5, so a description thereof will be omitted. Further, a facsimile 12R operating as a receiving side is connected to the automatic dialing device 10R on the receiving side via a cable _l2 .

Automatic dialing device 10, 1 in the above configuration
The operation of 0R will be explained based on the flowchart shown in FIG.

In FIG. 6, steps 53 to 65 are an automatic dialing device 10 operating as a calling party.
The process from step 71 to step 79 to step 65 is the process performed by the automatic dialing device 10R operating as the receiving side.

First, when the power switches 25 of the automatic dialing devices 10 and 10R are turned on, each microprocessor 14 reads a program from the ROM 15 and starts processing from step 51. next,
At step 52, it is determined whether or not the TEL key 44 has been pressed. If it is assumed that the TEL key 44 has not been pressed yet, the process proceeds to step 71. Here, NCU32
It is detected whether a direct call (call operation using the dial call function provided in the facsimile 12, 12R) is made from the facsimile 12, 12R via the facsimile 12, 12R. When this direct transmission occurs, the NCU 32 detects the dial signal from the facsimile 12 or the facsimile 12R as a loop via the cable l ₁ or cable l ₂ , the connector 36 and the wiring W ₁ , and sends it to the microprocessor 14 via the bus 20. This loop detection information is transmitted to. and,
Proceed to step 63. However, facsimile 12,1
Assuming that a direct call operation from 2R is not performed, loop detection is not performed in step 71, so the process proceeds to step 72, where the NCU 32 detects an incoming call, but since no incoming call is detected yet, the process returns to step 52. As above, TEL key 44 is
Detects whether it is in the ON state. Therefore,
Automatic dialing device 10, 10R is TEL key 44
The process waits in a loop of steps 52→71→72→52 until the button is pressed or an incoming call is detected at step 72.

Therefore, the following description assumes that the facsimile 12 transmits information to a desired subscriber while on standby in such a state.

First, after setting the document on the facsimile 12, press the TEL key 44 of the automatic dialing device 10 on the calling side. During the loop of steps 52 → 71 → 72 → 52, the process exits from step 52 and proceeds to step 53 (however, It is assumed that the automatic dialing device 10R installed at the desired subscriber, that is, on the called side, is still looping through steps 52→71→72→52). In step 53, the system waits for the desired subscriber's abbreviated number (indicated in the figure as "ID No.") to be input from the numeric keypad 47, and once input, the abbreviated number is stored in the microprocessor 14. Save in register. Further, in step 54, the abbreviated number stored in this register is displayed on the liquid crystal display 17. Then, in step 55, when the TEL key 44 is pressed for the second time indicating the end of the abbreviated number input operation, it is checked in step 56 whether or not there is an abbreviated number that matches the entered abbreviated number in the RAM 22.
Search in. If a number matching the input abbreviated number is detected, a telephone number (indicated in the figure as "TEL No.") stored corresponding to the abbreviated number is read out from the RAM 22. and,
In step 57, this telephone number is output to the PB oscillator 30. The PB oscillator 30 converts the telephone number into a predetermined dial signal, and also connects the wiring W ₇ ,
NCU32, wiring _W4 , contact 33 of relay contact 33
The signal is sent to the exchange 11 via the terminals A and C, the wiring _W5 , the connector 35, and the communication line _L1 , and waits for incoming call detection in step 58. If the exchange 11 receives the dial signal and selects the communication line _L2 , it returns the incoming signal to the automatic dialing device 10, and the process proceeds to step 59. Note that step 56
, enter the same abbreviated number you entered in RAM22.
If the search cannot be performed, the process proceeds to step 66, where a predetermined error message is displayed on the liquid crystal display 17, and the process proceeds to step 52, where the process returns to the standby state. Also,
At step 58, the automatic dialing device 10 of the called party
If R is already exchanging information with another automatic dialing device 10 or the like, the exchange 11 does not reply the incoming signal to the automatic dialing device 10 even after waiting for a predetermined period of time, so the process advances to step 67 and the counter circuit 16 If the predetermined count number (the so-called automatic re-dial number, for example, 3 times) has not been reached, the process proceeds to step 57, and a dialing signal is automatically sent out again in the same manner as described above. Note that the number of automatic redials can be set in advance, as will be described later. When the count value in the counter circuit 16 reaches a predetermined number of times, a predetermined error display is displayed on the liquid crystal display 17, and the process returns to step 52 to enter a standby state.

In step 59, the microprocessor 14 retrieves the abbreviated number already stored in the register and stores it in the PB.
Output to oscillator 30. Then, PB oscillator 30
converts this abbreviated number into a predetermined signal and sends it to the exchange 11 via the same route as when the telephone number was sent, and then to the automatic dialing device 10 on the receiving side via the communication line _L2 .
Send to R. Then, in step 60, the call waits for an abbreviated number to be returned from the automatic dialing device 10R on the called side. Specifically, the PB signal receiver 31
inputs the reception command from the microprocessor 14 and connects the communication line L ₂ , the exchange 11, the communication line L ₁ ,
Wait for the abbreviated number that arrives along the route of connector 35, wiring W ₅ , terminals C and A of relay contact 33, wiring W ₄ , NCU 32, and further wiring W ₆ .

On the other hand, in the automatic dialing device 10R on the receiving side,
When the exchange 11 selects the communication line _L2 , the exchange 11 also sends an incoming signal to the automatic dialing device 10R on the called side, as explained in step 58, so this incoming signal is detected in step 72. Then proceed to step 73. Then, the microprocessor 14 reads out its own abbreviated number stored in a predetermined location in the RAM 22, and in step 73 enters the PB.
Output to oscillator 30. Then, PB oscillator 30
converts the abbreviated number into a predetermined signal and wires it.
W ₇ , NCU 32, wiring W ₄ , terminals A and C of relay contact 33, wiring W ₅ , connector 35, communication line L ₂ ,
A reply is sent to the automatic dialing device 10 on the calling side via the exchange 11 and the communication line _L1 . Next, the microprocessor 14 transmits the caller's automatic dialing device 10.
In step 74, the abbreviated number output from the abbreviated number is received. Specifically, the PB signal receiver 31 connects the communication line L ₁ , the exchange 11, the communication line L ₂ , the connector 35,
Wiring W ₅ , terminals C and A of relay contact 33, wiring
Only the abbreviated numbers are detected from the signals arriving on the path of W ₄ , NCU 32, and wiring W ₆ . If the abbreviated number is detected, the process proceeds to step 75, where it is determined whether the own abbreviated number held in the RAM 22 matches the received abbreviated number, and if a match is confirmed, the process proceeds to step 76. Proceed to display the specified display, and in step 77, display the NCU.
Give the RG sending command to 32. Then, NCU32
Since the RG is sent to the facsimile 12R through the route of the wires W ₃ and W ₁ , the connector 36, and the cable l ₂ , the facsimile 12R rings a bell for a predetermined period of time. At this time, if the facsimile 12R is set to automatic reception mode, the receiving subscriber does not need to perform any operation. After a predetermined period of time, the microprocessor 14 proceeds to step 78 and outputs a relay drive command to the relay drive circuit 34 via the bus 20. Then, the relay drive circuit 34 causes current to flow through the built-in coil and drives the relay contact 33 to the state shown by the dotted line. Therefore, the end of the communication line _L2 is switched to the facsimile 12R side via the connector 35 and the wiring _W5 .
The facsimile 12R becomes ready for reception. Then, in step 79, the process waits for incoming call detection via the NCU 32.

At step 73, the automatic dialing device 10 of the called party
When the abbreviated number sent from R reaches the automatic dialing device 10 on the calling side via communication line _L2 , exchange 11, and communication line _L1 , this abbreviated number is
W ₅ , terminals C and A of relay contact 33, wiring W ₄ ,
NCU32, PB signal receiver 31 via wiring _W6
The received signal is received at the terminal and demodulated into a predetermined digital signal. Then, in step 60, the microprocessor 14 in the automatic dialing device 10 on the calling side performs the following steps.
Save said abbreviated number in another register and step
Check whether the abbreviated number sent in step 59 matches. When a match is confirmed in step 61, the process proceeds to step 62, where a command is given to the NCU 32 to send out RG. The NCU 32 outputs RG to the facsimile 12 via the wires W ₃ and W ₁ , the connector 36, and the cable l ₁ , and rings a bell for a predetermined period of time. Next, the microprocessor 14 proceeds to step 63 and drives the relay contact 33 via the relay drive circuit 34 to switch to the state shown by the dotted line.
Therefore, the end of the communication line L1 is connected to the facsimile ₁ via the connector 35, the wiring _W5 , and the relay contact 33.
Switched to 2R side. Therefore, facsimile 1
2 automatically starts transmitting and receiving operations. Further, the microprocessor 14 performs steps 63 to 64.
Then, the incoming call is detected via the NCU 32. Once the facsimile 12 has finished sending and receiving operations,
Since incoming call detection is not performed, step 64 → 63 →
Break out of the loop of 64 and proceed to step 65. In this step 65, the microprocessor 14
This is to release the end of the communication line _L1 , and specifically outputs a reset command to the relay drive circuit 34. Then, the relay drive circuit 34 cuts off the current to the built-in coil and returns the relay contact 33 to its normal state. Therefore, the communication line L ₁ is connected to the automatic dialing device 1 via the connector 35 and the wiring W ₅ .
Switched to the 0 side. Then, the process returns to step 52, and then waits in a loop of steps 52→71→72→52.

If it is not possible to confirm that the abbreviated numbers match in step 61, the microprocessor 14 proceeds to step 68 and waits for a predetermined time while determining whether or not the confirmation key 42 is pressed. Confirmation key 4
If 2 is pressed, proceed to step 62 and NCU
32 to output the RG to the facsimile 12. Then, as described above, step 63, 64,
Performs 65 processes. The reason why the abbreviated numbers do not match is that if the abbreviated number is not returned at all from the automatic dialing device 10R on the receiving side, or if the abbreviated number is not returned correctly due to noise etc., the abbreviated number in the RAM 22 There may have been a registration error when registering the phone number. In such a case, if a predetermined confirmation process is performed and it is determined that it is okay to transmit to the subscriber of the currently selected communication line _L2 , the communication is forced by pressing the confirmation key 42. We are also considering the possibility of doing so. Incidentally, if the confirmation key 42 is in the OFF state at step 68,
The program proceeds to step 66, displays a predetermined error, and returns to step 52.

In the automatic dialing device 10R on the receiving side,
Since the incoming signal is detected by the NCU 32 while the transmission/reception operation is being performed between the facsimile machines 12 and 12R, the process loops through steps 79→78→79 and waits until the transmission and reception operation between the facsimile machines 12 and 12R is completed. do. When this transmission/reception operation is completed, the NCU 32 will no longer detect incoming calls, so the microprocessor 14 proceeds to step 65 and outputs a reset command to the relay drive circuit 34. Then, the relay drive circuit 34
Since this returns the relay contact 33 to the normal state, the end of the communication line _L2 is switched to the automatic dialing device 10R side via the connector 35 and the wiring _W5 .
To be released. Thereafter, the process returns to step 52 and waits in a loop of steps 52→71→72→52. When it is discovered in step 75 that there is a discrepancy between the abbreviated number received by the automatic dialing device 10 of the called party and its own abbreviated number assigned to the called party,
Proceeding to step 80, it is determined whether the confirmation key 42 has been pressed in the same manner as explained on the calling side. If the confirmation key 42 is in the ON state, proceed to step 77 and send the RG to the facsimile 12R via the NCU 32.
output and ring a bell for a predetermined period of time. Then, the process proceeds to step 78, where transmission and reception operations are started between the facsimiles 12 and 12R in the same manner as described above. In step 75, the reasons why the abbreviated numbers do not match are that the calling party did not send the abbreviated number at all, or that the abbreviated number was sent but could not be received correctly due to noise etc.
There may be a mistake in registering the abbreviated number and telephone number in the RAM 22. In such a case, the receiving side also performs a predetermined confirmation process, and if it is determined that it is OK to receive the call from the calling side, the confirmation key 42 is pressed.
Force fax number 12,1 by pressing
It is considered that transmission and reception operations can be performed between 2Rs. Furthermore, at step 80,
When it is determined that the confirmation key 42 is in the OFF state, the process proceeds to step 81, where a predetermined error message is displayed, and the communication line _L2 is released in step 65, and information from the calling side is not accepted. step
Return to step 52 and wait in a loop of steps 52→71→72→52.

The automatic dialing device 10 also has the following service functions.

Self-abbreviation number registration function After pressing a predetermined key, if you input your pre-allocated registration number from the numeric keypad 47, the microprocessor 14 will input this number.
Store it at a specified location in RAM22.

Registration Function When the registration key 41 is pressed and the abbreviated number and telephone number are entered using the numeric keypad 47, the microprocessor 14 stores these numbers in correspondence with predetermined locations in the RAM 23, respectively. The end of the operation is instructed by the end key 43.

Date and time setting function After pressing the specified key, when date and time information is entered from the numeric keypad 47, the microprocessor 14 inputs this information to the calendar timer 2.
Set to 8.

Automatic redial count setting function After pressing a predetermined key, when the automatic redial count is input from the numeric keypad 47, the microprocessor 14 stores this value in a predetermined location in the RAM 22.

Printer ON/OFF setting function Press the specified key and then press the specified key on the numeric keypad 47 to turn on the microprocessor 14.
The printer is turned on/on at the specified location in RAM22.
Set the OFF flag.

RAM copy function After installing a RAM 22 similar to the RAM 22 described above in the connector 21a, when a predetermined key is pressed, the microprocessor 14 sequentially reads out information from the RAM 22 installed in the connector 21, and the RAM 22 installed in the connector 21a. RAM22
All information is copied at high speed by sequentially writing to the same location.

In this embodiment, a case has been described in which the storage means 1 is realized by the RAM 22 constituted by a CMOS element, etc. However, since it is sufficient that the storage means 1 is removable, it can also be realized by a cassette tape storage device, for example. be.

Further, in this embodiment, the communication device 6 is used to communicate between the facsimile machines 12 and 12R, but it is needless to say that the communication device 6 is not limited to this and may be a telephone, a computer terminal device, or the like.

As explained above, according to this embodiment, since abbreviated numbers are input instead of telephone numbers for subscribers belonging to a specific subscriber group, operability is improved.

In addition, the speed dial service of Nippon Telegraph and Telephone Corporation (NTT) allows you to register only 120 speed dial numbers at most, but in this example, a dedicated
It has RAM 22 and can register up to 6,000 sets of abbreviated numbers, and it is also possible to add more RAM 22.

〔Effect of the invention〕

As explained above, according to the present invention, when a telephone number of a subscriber who does not belong to a specific subscriber group is inputted due to an operation error of the input means, the first confirmation means receives the telephone number received by the input means. Since it is confirmed that the telephone number does not exist in the storage means, the automatic dialing device will not call an incorrect telephone number.
Therefore, since it is impossible to select a subscriber other than the desired subscriber, the so-called "wrong call" will not cause any inconvenience to the other party.

In addition, in the event that the telephone number of a subscriber who does not belong to a specific subscriber group is mistakenly stored in the storage means, if the incorrect telephone number is entered through the input means, the communication line will be selected and the communication device of the receiving party will be selected. A call is made, but since the automatic dialing device according to the present invention is not installed on the called side, it does not check whether the identification code sent from the calling side matches, and does not return the identification code to the calling side, so the caller's communication line is not connected. The end is never switched to the communication device side. Therefore, although the communication line is selected, actual information is not transmitted, so that the confidentiality of communication can be ensured.

Furthermore, if the automatic dialing device on the receiving side is called by a "mistaken call" or a so-called "prank call" from a subscriber who does not belong to a specific subscriber group, the automatic dialing device on the receiving side is called and a communication line is selected. However, since the calling side does not have an automatic dialing device installed, the identification code does not arrive at the called side, so the second confirmation means does not confirm that the identification codes match, and the end of the communication line on the called side is It is never switched to the communication device side. Therefore, communication with subscribers who do not belong to a particular subscriber group can be excluded.

[Brief explanation of drawings]

Fig. 1 is a principle diagram of the second invention, Fig. 2 is a system diagram of a communication system using an automatic dialing device in an embodiment of the invention, and Figs. FIG. 5 is a block diagram showing the configuration of the automatic dialing device in this embodiment, FIG. 5 is an external plan view of the automatic dialing device in this embodiment, and FIG. 6 is a flowchart showing the operating state of the automatic dialing device in this embodiment. 1...Storage means, 2...Input means, 3...First
confirmation device, 4...transmission means, 5... switching means,
6...Communication device, 7...Holding means, 8...Second confirmation means, 9...Replying means, 10, 10R...Automatic dialing device, 11...Switching machine, _L1 , _L2 ...
communication circuit.

Claims (1)

[Scope of Claims] 1. When the exchange selects a communication line based on the dial signal from the dialing device and the communication line is connected between the dialing devices on the calling side and the dialing device on the called side, holding means for the dialing device on the calling side. Among the identification codes held in the system and assigned to subscribers belonging to a specific subscriber group, an identification code that identifies the calling party or the called party is sent to the dialing device of the called party via a communication line, and the dialing device of the called party is dialed. When this identification code arrives, the device checks whether this identification code matches any of the identification codes held by the holding means, and when they match, switches the communication line from the dialing device side to the communication device side, and , the matching identification code or the predetermined identification code held in the holding means is returned to the dialing device on the calling side, and on the other hand, the dialing device on the calling side returns the returned identification code and the specified identification code held in the holding means. An automatic dialing method characterized by confirming a match with the identification code, and switching the communication line from the dialing device to the communication device when a match is found. 2. Input means 2 for accepting the destination number; Storage means 1 for storing telephone numbers of subscribers belonging to a specific subscriber group; and Storage means 1 for storing telephone numbers corresponding to the destination numbers accepted by the input means 2. a first confirmation means 3 for checking whether a subscriber exists; a holding means 7 for holding an identification code assigned to a subscriber belonging to a specific subscriber group; and a telephone corresponding to the destination number accepted by the input means 2. Transmitting means 4 that converts the number into a dial signal and transmits it to the exchange via a communication line, and also transmits a predetermined identification code held in holding means 7 to the called party.
a second confirmation means 8 for checking whether the received identification code matches the identification code held by the holding means 7; a reply means 9 for returning the identification code via the transmission means 4; and automatic dialing of the communication line. and switching means 5 for switching from the device side to the communication device side, and when the transmitted identification code is received, the second confirmation means 8 selects the received identification code and either one held in the holding means 7. After confirming the match with the identification code, the replying means 9 sends back the matching identification code or the predetermined identification code held in the holding means 7 to the calling party, and the switching means 5 connects the communication line to the communication device. On the other hand, when this returned identification code is received,
After the second confirmation means 8 confirms that the returned identification code matches any of the identification codes held in the holding means 7, the switching means 5 switches the communication line to the communication device side. Features an automatic dialing device.