JP3922322B2 - Data communication apparatus, data communication method, and storage medium - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a data communication apparatus, a data communication method, and a storage medium, and more particularly to a data communication apparatus, a data communication method, and a storage medium that use an information notification service in a telephone network.
[0002]
[Prior art]
As a conventional facsimile apparatus, there is a facsimile apparatus that supports dial-in calling. This type of apparatus receives a DTMF signal after a primary response, determines whether it is a call or communication based on the DTMF signal, and sets a DC loop. If the designation of the DTMF signal is communication, a DC loop is formed again, and the operation proceeds to the receiving operation to perform image communication. If the designation of the DTMF signal is a call, a pseudo call signal is sent to the telephone terminal. When the telephone off-hook is detected, the telephone line is connected to the telephone terminal, and a DC loop is formed to make a call.
[0003]
[Problems to be solved by the invention]
However, in the above conventional example, when it is determined that a call is made by the DTMF signal, the telephone must be sounded by a pseudo call signal sent from the facsimile apparatus, and a pseudo call signal sending means is necessary, and the apparatus is expensive. There was a drawback of becoming.
[0004]
In addition, when communication is designated by the DTMF signal and communication is started, but confidential reception is designated but there is no memory capacity or there is no information designated for polling, the target communication is not executed. There was the fault that it was done.
[0005]
The above problem is not limited to the facsimile apparatus, but is common to various data communication apparatuses that communicate by connecting to a telephone network.
[0006]
SUMMARY OF THE INVENTION An object of the present invention is to prevent unnecessary billing in a data communication apparatus and to switch communication between a telephone and a data communication apparatus with a simple and inexpensive configuration.
[0007]
[Means for Solving the Problems]
  In order to solve the above problems, in the present invention, a DC loop is formed when an information receiving terminal activation signal, a paging signal, and a V.23 modulation signal designating communication contents are received and an information receiving terminal activation signal is detected. After receiving the V.23 modulation signal for primary response to the line, specifying the communication content, cutting off the DC loop and sending the reception completion signal, according to the specification by the V.23 modulation signal, A communication process is performed in which a subsequent call signal is supplied to the telephone terminal, or the data communication apparatus automatically responds to the call signal or does not respond to the call signal.In that case, the V . The 23 modulation signal designates a telephone call connected to the telephone terminal or a predetermined data communication by the data communication apparatus, and the designated predetermined data communication is confidential communication, direct recording, or polling communication. Is facsimile communicationAdopted the configuration.
[0010]
In the present invention, a configuration is adopted in which the polling communication is selective polling communication performed using selective polling information.
[0011]
Further, in the present invention, when predetermined data communication by the data communication apparatus is designated by the V.23 modulation signal, if the designated data communication cannot be executed, a response is made to the paging signal transmitted after the primary response. In other cases, the data communication device automatically responds to the calling signal and executes data communication.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.
[0013]
FIG. 1 shows an embodiment of a facsimile apparatus employing the present invention.
[0014]
In FIG. 1, reference numeral 2 denotes an NCU (network control unit) which is connected to a terminal of the line to use the telephone network for data communication or the like, and controls connection of the telephone exchange network or switches to a data communication path. Or holding a loop. If the signal from the control circuit 20 (signal line 20a) is “0”, the NCU 2 connects the telephone line 2a to the telephone terminal side. If the signal is “1”, the NCU 2 connects the telephone line 2a to the facsimile communication side. If the signal is “2”, the telephone line 2a is connected to the signal line 2d. In the normal state, the telephone line 2a is connected to the signal line 2d side. Here, in the hybrid circuit 6, the later-described call signal detection circuit 22, and the interface circuit on the NCU2 side of the information reception terminal activation signal detection circuit 24, the signal line 2c side forms a DC loop, and the signal line 2d side is DC. Configured to break the loop. The state of the DC loop of the signal line 2b between the NCU 2 and the telephone 4 is determined by the hook state of the telephone.
[0015]
Reference numeral 6 denotes a hybrid circuit. The hybrid circuit 6 separates a transmission system signal and a reception system signal, sends a transmission signal from the adder circuit 12 to the telephone line 2a via the NCU 2, and sends a signal from the other party to the NCU 2 Via, and sent to the modem 8 via the signal line 6a.
[0016]
Reference numeral 8 denotes a modulator / demodulator. 8, V. 21, V.R. 23, V.I. 27ter, V.I. 29, V.R. 17, V. 34 is a modulator / demodulator that performs modulation and demodulation based on 34, and each transmission mode is designated by a signal line 20c. Reference numeral 8 inputs a signal output to the signal line 20b, outputs modulated data to the signal line 8a, receives a reception signal output to the signal line 6a, and outputs demodulated data to the signal line 8b.
[0017]
Reference numeral 10 denotes an ITU-T recommendation V.30. 8 ANSam signal (tonal response signal), and when the signal level “1” is output to the signal line 20d, the ANSam signal is transmitted to the signal line 10a and the signal level to the signal line 20d. When a “0” signal is output, the signal line 10a is operated so as not to output any signal.
[0018]
Reference numeral 12 denotes a transmission signal adding circuit which inputs information on the signal line 8a and information on the signal line 10a and outputs the addition result to the signal line 12a.
[0019]
Reference numeral 14 denotes an image data reading circuit, which has a known configuration including a document conveying system, an optical reading element, and the like, and the read image data is output to a signal line 14a.
[0020]
Reference numeral 16 denotes a recording circuit for recording image data, and is constituted by various recording systems such as an electrophotographic system and an inkjet system. Here, it is assumed that the recording circuit 16 sequentially converts the information output to the signal line 20e into a bit image for each line and records it.
[0021]
Reference numeral 18 denotes a memory circuit, which is composed of an arbitrary storage device such as a ROM, a RAM, or a hard disk, and is used for storing various data. In particular, with respect to storage of image information, the memory circuit 18 stores raw information of read image data or encoded image information, and stores raw received image information, decoded image information, or the like. Used for. The memory circuit 18 corresponds to the storage medium of the present invention.
[0022]
Reference numeral 22 denotes a call signal detection circuit. When a signal output to the signal line 2d is input and a call signal in which the 16 Hz start signal is on for 1 second and the 16 Hz start signal is off for 2 seconds is detected, the signal line 22a is detected. A signal level “1” is output to the signal line, and if no call signal is detected, a signal level “0” is output to the signal line 22a.
[0023]
Reference numeral 24 denotes a detection circuit that detects an information reception terminal activation signal in an information notification service described later, and inputs a signal output to the signal line 2d after the primary response, and turns on for 16 seconds at 16 Hz. When an information receiving terminal activation signal having a period of 0.5 seconds off at 16 Hz is detected, a signal level “1” is output to the signal line 24a, and when the information receiving terminal activation signal is not detected, the signal line 24a is output. A signal level “0” is output.
[0024]
Reference numeral 26 denotes an operation unit, which is a one-touch dial, an abbreviated dial, a numeric keypad, a * / # key, a registration key used for registration processing in the SEP registration circuit 28 described later (arbitrary according to the registration operation method), and polling transmission data. Input key, polling transmission data deletion key, set key, start key, confidential information output key, other function keys, or a display used for displaying various information. The key information pressed by the operation unit 26 is output to the control circuit 20 through the signal line 26a.
[0025]
Reference numeral 28 denotes an SEP registration circuit for registering an SEP (selective polling) signal corresponding to the memory box via the signal line 28a. The facsimile apparatus of this embodiment is an ITU-T recommendation T.30. A memory box associated with 30 SEP (selective polling) signals can be registered. When a predetermined SEP signal is received, image information registered in the memory box corresponding to the SEP signal is polled and transmitted. The SEP registration circuit 28 is for associating the SEP signal with the memory box. The registration operation is executed by a predetermined user interface using a predetermined registration key provided on the operation unit 26. In this embodiment, 20 memory boxes from “00” to “19” can be registered.
[0026]
Reference numeral 30 denotes a display circuit for displaying the presence of confidential reception. When a signal level “1” is output to the signal line 20f, the presence of confidential reception is displayed and a signal level “0” is output to the signal line 20f. When it is set, it operates so as not to display the confidential reception. This display circuit 30 is used to notify the user when the apparatus performs confidential reception.
[0027]
Reference numeral 20 denotes a control circuit composed of a microprocessor, a memory, and the like, and controls the operation of the entire apparatus. The control circuit 20 controls the operation of the entire apparatus based on a program to be described later stored in a ROM unit (or a memory such as an internal ROM) of the memory circuit 18.
[0028]
The operation performed by the control of the control circuit 20 is roughly as follows.
[0029]
As an information notification service in the telephone network, a terminal (DTE) is activated by an information receiving terminal activation signal after a primary response before a call connection that actually charges. There has been proposed a technique for performing communication after exchanging information on what kind of communication is actually performed using the 23 modulation signal.
[0030]
The facsimile apparatus of this embodiment uses this information notification service. When the information reception terminal activation signal is detected by the information reception terminal activation signal detection circuit 24, the control circuit 20 forms a DC loop and makes a primary response. , The modem 8 causes V.V. 23 modulation signal is received, the DC loop is cut off, and a reception completion signal is transmitted. Depending on the received contents of the 23 modulation signal, it is determined whether the next call signal is supplied to the telephone terminal, whether the facsimile apparatus automatically answers, or does not respond to the call signal.
[0031]
Where V. The contents designated by the 23 signal are designated as a call, communication designation, confidential communication in the case of a call, direct recording, or polling transmission (including selective polling transmission).
[0032]
And V. If a call is specified by the 23 signal, a call signal is supplied to the telephone terminal, and if communication is specified, facsimile communication is performed. At this time, confidential reception is specified, and the reception memory is less than a predetermined amount. If the specified communication cannot be performed, such as polling transmission is specified but no polling information is specified, or direct recording is specified but there is no recording paper, no response is made to the paging signal. In the case of other communication designations, an automatic response is made and control is performed to execute facsimile communication.
[0033]
Next, operations in the above configuration will be described with reference to FIGS. 2 to 7 show communication control procedures executed by the control circuit 20. The illustrated procedures are stored in the ROM portion of the memory circuit 18 as a program of the control circuit 20. The parts with the same numbers in FIGS. 2 to 7 are continuous at the respective positions.
[0034]
In FIG. 2, step S0 represents the beginning of processing started in response to power-on, reset operation, or the like.
[0035]
In step S2 of FIG. 2, a signal having a signal level “0” is output to the signal line 20f, and the display circuit 30 is controlled so as not to perform display with confidential reception.
[0036]
In step S4, the signal “2” is output to the NCU 2 via the signal line 20a, the line 2a is connected to the signal line 2d, that is, the call signal detection circuit 22 and the information reception terminal activation signal detection circuit 24 side, and the line 2a Break the DC loop.
[0037]
In step S6, the signal level “0” is output to the signal line 20d, and the ANSam signal transmission circuit 10 is set not to transmit the ANSam signal.
[0038]
In step S8, information on the signal line 26a is input, and it is determined whether or not registration in the SEP registration circuit 28 is selected. If registration is selected, the process proceeds to step S10 and corresponds to the memory box (00 to 19). Then, the SEP address is registered in the circuit 28 based on a predetermined operation from the operation unit 26. If registration is not selected, the process proceeds to step S12.
[0039]
In step S12, information on the signal line 24a is input, the output of the information reception terminal activation signal detection circuit 24 is checked, and it is determined whether the information reception terminal activation signal detection circuit 24 has detected the information reception terminal activation signal. . If the signal is detected via the lines 2a to NCU2, the process proceeds to step S16. If the signal is not detected, the process proceeds to step S14, and after performing other processes (processes of a known facsimile machine), the process proceeds to step S18 in FIG.
[0040]
On the other hand, when the information receiving terminal activation signal is detected, in step S16, the signal “1” is output to the NCU 2 via the signal line 20a, the line 2a is connected to the signal line 2c, that is, the hybrid circuit 6 side, A direct current loop is formed and a primary response is made.
[0041]
In step S18 to step S24 in FIG. 3, the memory box is subjected to polling registration or polling data erasure processing.
[0042]
First, in step S18, operation information of the operation unit 26 is input via the signal line 26a, and it is determined whether or not storage of polling transmission data in the memory is selected for any memory box. In step S20, the polling transmission data is stored in the memory in the image data storage area (provided in the memory circuit 18) corresponding to the designated memory box, and if not selected, the process proceeds to step S22.
[0043]
In step S22, operation information of the operation unit 26 is input via the information of the signal line 26a, and it is determined whether or not deletion of polling transmission data stored in the memory corresponding to the memory box is selected. Then, the process proceeds to step S24, and the stored polling transmission data corresponding to the memory box is erased from the storage area corresponding to the memory box. If deletion of polling transmission data is not selected, the process proceeds to step S26.
[0044]
In steps S26 to S32, processing related to confidential communication is performed.
[0045]
First, in step S26, the information of the signal line 26a is input, and it is determined whether or not the output of confidential reception information (already received) is selected. If selected, the process proceeds to step S28, and must be selected. If so, the process proceeds to step S32.
[0046]
In step S28, it is determined whether or not a password necessary for the output of confidential reception has been input. When the password is input, the process proceeds to step S30, and information specified from information already received in confidential and stored in the memory. Is recorded by the recording circuit 14, and if no password is entered, the process proceeds to step S32. When the confidential reception output ends, the received information is erased from the memory.
[0047]
In step S32, it is determined whether or not (other) confidential reception information is still stored in the memory. If it is stored, the process proceeds to step S4 in FIG. 2, and if not stored, the process proceeds to step S2. That is, the confidential reception display of the display circuit 30 that is turned on by confidential reception, which will be described later, is updated according to the presence / absence of confidential reception information.
[0048]
Now, step S34 and subsequent steps in FIG. 4 are a continuation of the communication process performed following step S16 in FIG.
[0049]
In step S34, V.P. 23 signal is received, and in step S36, the received V.23 signal is received. It is determined whether the designation of the 23 signal is a designation of a call. If the designation is a designation of a call, the process proceeds to step S38. If the designation is facsimile communication, the process proceeds to step S52 of FIG. V. 23 signals are analyzed by examining the output of the modem 8.
[0050]
In the case of a call, first, in step S38, the signal "2" is output to the signal line 20a, the signal line 2a is connected to the signal line 2d, the DC loop is cut off, and a reception completion signal is sent out.
[0051]
In step S40, a 100 ms wait (waiting time) is set. In step S32, the signal "0" is output to the signal line 20a, the line 2a is connected to the signal line 2b, that is, the telephone 4 side, and a call signal is set to be output to the telephone.
[0052]
In step S44, it is determined whether or not the call signal is detected by the call signal detection circuit 22. If the call signal is detected, the process proceeds to step S46. If the call signal is not detected, the process proceeds to step S4 in FIG. .
[0053]
In step S46, it is determined whether or not the telephone set 4 is off-hooked. When the telephone set 4 is off-hooked, a direct-current loop is formed by the telephone set 4, thereby providing a secondary response. Let it be done. If the telephone 4 is not off-hooked in step S46, the process proceeds to step S44, and the ringing of the telephone 4 by the calling signal is continued.
[0054]
In step S50, the telephone 4 is on-hooked. If the telephone 4 is on-hooked, the process returns to step S4 in FIG. 2, and if not on-hook, the call in step S48 is continued.
[0055]
On the other hand, if communication is designated in step S36, in step S52 of FIG. It is determined whether confidential communication (reception) is designated by the 23 signal. If confidential communication is designated, the process proceeds to step S54. If confidential communication is not designated, the process proceeds to step S74 in FIG.
[0056]
In step S54, it is determined whether or not the remaining amount of image memory (allocated in advance in the memory circuit 18) for image reception is 0.5 M (mega) bytes or more, and the remaining amount of image memory is 0. If there is more than 5M bytes, the process proceeds to step S58, and if it is less than 0.5M bytes, the process proceeds to step S56. The threshold value for the remaining amount of image memory may be any value that can store images of several pages to several tens of pages.
[0057]
Since the confidential reception cannot be performed when the remaining amount of the image memory is less than 0.5 MB, the confidential reception is designated using the display circuit 30 (or the display of the operation unit 26, etc.) in step S56. Indicates that there was no free space in the memory and communication was interrupted. This display is erased by any key operation.
[0058]
On the other hand, if the remaining amount of image memory is sufficient (0.5 Mbytes), in step S58, the signal “2” is output to the signal line 20a, the signal line 2a is connected to the signal line 2d, and the DC loop is disconnected. As a reception completion signal.
[0059]
In step S60, the process waits for 300 ms. Subsequently, in step S62, information on the signal line 22a is input to determine whether or not a call signal is detected. If detected, the process proceeds to step S64.
[0060]
In step S64, the signal “1” is output to the signal line 20a, the signal line 2a is connected to the signal line 2c, a DC loop is formed, and a secondary response is made.
[0061]
In step S66, the pre-communication procedure is executed, in step S68 of FIG. 6, the confidential signal reception of the image signal is executed, and in step S70, the post-procedure is executed. In step S72, a signal of signal level “1” is output to the signal line 20f, and the presence of confidential reception is displayed on the display circuit 30.
[0062]
In this way, the confidential reception image is stored in the image memory of the memory circuit 18. The recording output of the confidential reception image and the related control of the display unit 30 can be performed by the above-described procedure. If the remaining memory is not sufficient, the communication is terminated without connecting a line.
[0063]
On the other hand, if it is not confidential reception in step S52 of FIG. 5, the processing after step S74 is performed. First, in step S74, V.P. It is determined from the 23 signal whether direct reception (processing for recording and outputting received images) is designated. If designated, the process proceeds to step S76. If direct reception is not designated, the process proceeds to step S86.
[0064]
In step S76, it is determined whether or not there is sufficient recording paper in the recording circuit 16. If there is recording paper, the process proceeds to step S80, and if there is not enough recording paper in the recording circuit 16, the process proceeds to step S78.
[0065]
In step S78, it is displayed that direct recording is designated on the display (or display circuit 30) of the operation unit 26, but there is no recording paper and communication is cut off. This display disappears in response to any key operation.
[0066]
Step S80 indicates that steps S58 to S66 in FIG. 5, that is, DC loop breakage, wait, DC loop formation based on call signal detection, and facsimile communication pre-procedure are performed.
[0067]
In step S82, image signal reception / recording is performed, and in step S84, a post-procedure is performed.
[0068]
In this way, when direct reception is designated, recording is performed when there is sufficient recording paper, and communication is terminated without connecting a line when there is not enough recording paper.
[0069]
In step S86 of FIG. It is determined whether or not polling transmission is designated by the 23 signal, and if designated, the process proceeds to step S88, and if polling is not designated, the process proceeds to step S4.
[0070]
In step S88, it is determined whether or not polling transmission information is already registered in the memory box designated by the SEP signal. If polling transmission information is registered in the memory box, the process proceeds to step S92. If the polling transmission information is not registered, the process proceeds to step S90.
[0071]
In step S90, the polling transmission designated by the SEP signal is designated, but there is no transmission information in the memory box corresponding to this SEP, and the display (or display circuit 30) of the operation unit 26 indicates that the communication has been cut off. indicate. This display disappears in response to any key operation.
[0072]
Step S92 indicates that steps S58 to S66, that is, DC loop breakage, wait, DC loop formation based on call signal detection, and facsimile communication pre-procedure are performed.
[0073]
In step S94, the information stored in the memory box designated by the SEP signal is polled and transmitted, and in step S96, a post-communication procedure is executed.
[0074]
In this way, polling transmission designated by the SEP signal is performed, but if the information to be polled is not registered in the memory box, the communication is terminated without connecting the line.
[0075]
As described above, according to the present embodiment, the information reception terminal activation signal is detected, and then, based on the designation of the V.23 modulation signal, the DC loop is cut off and the reception completion signal is transmitted. To call the telephone because it determines whether the next call signal is supplied to the telephone terminal, the facsimile machine automatically answers, or no answer to the call signal depending on the received contents of the modulation signal The pseudo call signal sending means is not required, and the apparatus can be configured simply and inexpensively.
[0076]
In particular, when a telephone call is specified by a V.23 modulation signal, the telephone can be called by a call signal sent from an exchange, and a facsimile device does not need a means for sending a pseudo call signal, thereby reducing costs. It becomes.
[0077]
Furthermore, if there is no image memory remaining for confidential reception, there is not enough recording paper for direct reception, or there is no information for polling transmission, there is no point in making a call connection. Since it is not connected to the terminal, useless billing can be prevented.
[0078]
Although the configuration of the facsimile apparatus has been exemplified above, it is needless to say that the type of data communication executed on the communication apparatus side is not limited to facsimile communication.
[0079]
【The invention's effect】
As is apparent from the above description, according to the present invention, when the information receiving terminal activation signal is received and the V.23 modulation signal designating the communication content is received and the information receiving terminal activation signal is detected, the DC loop , The primary response to the line, the reception of the V.23 modulation signal, the disconnection of the DC loop, the sending of the reception completion signal, and the subsequent call signal according to the designation by the V.23 modulation signal V.23 modulation is employed because the communication processing is performed such that the data communication device automatically responds to the call signal or does not respond to the call signal. The designated communication can be executed in accordance with the designation by the signal. In this case, a pseudo call signal sending means for calling the telephone is not required, and the apparatus can be configured simply and inexpensively. In the case of a facsimile machine, various facsimile communications such as confidential communications, direct recording, and polling communications (including selective polling) can be designated by the V.23 modulation signal. In addition, when predetermined data communication by the data communication apparatus is designated by the V.23 modulation signal, when the designated data communication cannot be executed, the process ends without responding to the paging signal transmitted after the primary response. In other cases, the data communication device automatically responds to the calling signal and executes data communication, so that it is not connected to the calling terminal in cases where it does not make sense to make a call connection, thereby preventing unnecessary billing. , Etc. are obtained.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a facsimile apparatus employing the present invention.
FIG. 2 is a flowchart showing communication control of the control circuit of FIG.
FIG. 3 is a flowchart showing communication control of the control circuit of FIG. 1;
FIG. 4 is a flowchart showing communication control of the control circuit of FIG. 1;
FIG. 5 is a flowchart showing communication control of the control circuit of FIG. 1;
6 is a flowchart showing communication control of the control circuit of FIG. 1; FIG.
7 is a flowchart showing communication control of the control circuit of FIG. 1. FIG.
[Explanation of symbols]
2 NCU
4 Telephone
6 Hybrid circuit
8 modem
10 ANSam sending circuit
12 Adder circuit
14 Reading circuit
16 Recording circuit
18 Memory circuit
20 Control circuit
22 Call signal detection circuit
24 Information receiving terminal activation signal detection circuit
26 Operation unit
28 SEP registration circuit corresponding to memory box
30 Display circuit with confidential reception

Claims (9)

In a data communication device that uses an information notification service in a telephone network,
Means for detecting an information receiving terminal activation signal;
Means for detecting a ringing signal;
Means for receiving a V.23 modulation signal designating communication content;
When an information reception terminal activation signal is detected, a direct current loop is formed, a primary response is made to the line, a V.23 modulation signal specifying communication contents is received, the direct current loop is cut off, and a reception completion signal is transmitted. Then, according to the designation by the V.23 modulation signal, either the subsequent call signal is supplied to the telephone terminal, or the data communication device automatically responds to the call signal, or does not respond to the call signal. have a control means for performing communication processing,
By the V. 23 modulated signal, communication by telephones connected to the telephone terminal, or with a predetermined data communication is designated by the data communication apparatus,
2. A data communication apparatus according to claim 1, wherein the designated predetermined data communication is facsimile communication of confidential communication, direct recording, or polling communication . The data communication apparatus according to claim 1 , wherein the polling communication is selective polling communication performed using selective polling information.   When predetermined data communication by the data communication device is designated by the V.23 modulation signal, if the designated data communication cannot be performed, the process ends without responding to the paging signal transmitted after the primary response, 2. The data communication apparatus according to claim 1, wherein the data communication apparatus automatically responds to the calling signal in other cases and executes data communication. In a data communication method using an information notification service in a telephone network,
Detecting an information receiving terminal activation signal;
Detecting a ringing signal;
Receiving a V.23 modulation signal designating communication content;
When an information reception terminal activation signal is detected, a direct current loop is formed, a primary response is made to the line, a V.23 modulation signal specifying communication contents is received, the direct current loop is cut off, and a reception completion signal is transmitted. Then, according to the designation by the V.23 modulation signal, either the subsequent call signal is supplied to the telephone terminal, or the data communication device automatically responds to the call signal, or does not respond to the call signal. It has a control step of executing a communication process,
By the V. 23 modulated signal, communication by telephones connected to the telephone terminal, or with a predetermined data communication is designated by the data communication apparatus,
The data communication method according to claim 1, wherein the designated predetermined data communication is facsimile communication of confidential communication, direct recording, or polling communication . The data communication method according to claim 4 , wherein the polling communication is selective polling communication performed using selective polling information. When predetermined data communication by the data communication device is designated by the V.23 modulation signal, if the designated data communication cannot be executed, the process ends without responding to the paging signal transmitted after the primary response, 5. The data communication method according to claim 4 , wherein in other cases, the data communication apparatus automatically responds to the calling signal and executes data communication. In a storage medium storing a control program for a data communication device that uses an information notification service in a telephone network,
A procedure for detecting an information receiving terminal activation signal;
A procedure for detecting a ringing signal;
A procedure for receiving a V.23 modulation signal designating communication content;
When an information reception terminal activation signal is detected, a direct current loop is formed, a primary response is made to the line, a V.23 modulation signal specifying communication contents is received, the direct current loop is cut off, and a reception completion signal is transmitted. Then, according to the designation by the V.23 modulation signal, either the subsequent call signal is supplied to the telephone terminal, or the data communication device automatically responds to the call signal, or does not respond to the call signal. In addition to storing the control procedure for executing the communication process of
By the V. 23 modulated signal, communication by telephones connected to the telephone terminal, or with a predetermined data communication is designated by the data communication apparatus,
The storage medium characterized in that the specified data communication specified is facsimile communication of confidential communication, direct recording, or polling communication . The storage medium according to claim 7, wherein the polling communication is selective polling communication performed using selective polling information. When predetermined data communication by the data communication device is designated by the V.23 modulation signal, if the designated data communication cannot be executed, the process ends without responding to the paging signal transmitted after the primary response, 8. The storage medium according to claim 7 , further comprising a procedure in which the data communication apparatus automatically responds to the calling signal in other cases and executes data communication.

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