JP2009060366A - Communication device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent occurrence of a communication failure with an old facsimile apparatus as a communication apparatus to which a communication function is not added.
An initial identification unit 115ab of a communication control unit 115 determines whether or not the same communication function data as a telephone number transmitted by a communication device on a transmission side is stored in an end-of-request capability setting storage unit of a flash memory. To do. When the initial identification unit 115ab determines that the same terminal capability setting data as the telephone number transmitted by the communication device on the transmission side is stored in the terminal capability setting storage unit, the DIS signal regeneration unit 115ac Based on the terminal capability setting information described in the capability setting data, a DIS signal that declares the capability of the communication function that can be received is created. The communication control unit 115 transmits the generated DIS signal transmission side communication device.
[Selection] Figure 6

Description

  The present invention relates to a communication apparatus, and more particularly to a communication apparatus having a facsimile function.

A conventional facsimile apparatus as a communication apparatus is an ITU-T recommendation T.264 defined by ITU-T (International Telephony Union). Facsimile data is transmitted to a communication apparatus as a facsimile apparatus on the other side in accordance with a transmission control procedure defined in 30 (Procedure for document facsimile transmission in a general public telephone network). Incidentally, in recent years, a new communication function has been newly added to the facsimile apparatus. 30 has also been extended (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 2003-163798

  However, in the facsimile apparatus in which the communication function is newly added, when an inquiry is made to the old facsimile apparatus to which the communication function is not added and the communication function supported by the facsimile apparatus, the old facsimile apparatus responds to the inquiry. However, there is a problem that communication with an old facsimile apparatus is disabled because it cannot respond to the request.

  SUMMARY OF THE INVENTION In view of the above-described problems, the present invention has an object to provide a communication device capable of preventing the occurrence of communication failure with an old facsimile device as a communication device to which no communication function is added. To do.

  In order to solve the above-described problems, the present invention provides a communication device that connects to a telephone line and performs data communication via the telephone line, and obtains a source number corresponding to the pre-communication information notification service. A number acquisition unit, a source number storage unit for storing a source number input from the outside, a source number acquired by the source number acquisition unit, and a transmission stored in the source number storage unit A comparison unit that compares an original number and a communication control unit that changes reception capability information to be transmitted at the time of data reception based on a comparison result of the comparison unit.

  As described above, according to the present invention, the comparison unit compares the transmission source number acquired by the transmission source number acquisition unit with the transmission source number stored in the transmission source number storage unit, and based on the comparison result. Since the communication control unit changes the reception capability information to be transmitted when data is received, the old facsimile apparatus that has received the reception capability information can respond to the received reception capability information. Thus, it is possible to prevent the occurrence of communication failure with the old facsimile apparatus.

  Next, the best mode for carrying out the present invention will be described.

  FIG. 1 is a block diagram showing a configuration of a communication apparatus according to an embodiment of the present invention. As shown in FIG. 1, a facsimile apparatus 10 as a communication apparatus according to the first embodiment includes a CPU 11, a ROM 12, a RAM 13, a flash memory 14, a reading device 15, a printing device 16, a modem 17, and an operation panel. 18 and an NCU (Network Control Unit) 19, which are connected to a system bus 20, and the NCU 19 is connected to a subscriber line switch 30.

  The CPU 11 executes a communication control program and a system control program stored in the ROM 12.

  The ROM 12 stores the above-described communication control program and system control program executed by the CPU 11. The RAM 13 temporarily stores data generated when the CPU 11 executes a communication control program and system control. The RAM 13 temporarily stores image data composed of dot data transmitted from the counterpart communication device.

  As shown in FIG. 2, the flash memory 14 includes a calling telephone number storage unit 141 and a terminal capability setting storage unit 142. The calling telephone number storage unit 141 stores the calling telephone number notified by the number display service provided by the subscriber line switch 30. As shown in FIG. 4, the terminal capability setting storage unit 142 stores terminal capability setting data in which terminal capability setting information input by the user from the operation panel 18 is described.

  This terminal capability setting data includes a telephone number item indicating the telephone number of the caller, a speed item indicating the communication speed, a resolution item indicating the resolution when the facsimile data is formed on the print medium, and data compression of the facsimile data. It includes an encoding item to be defined, an ECM item that defines whether or not to perform error control, and an F code item that is a name determined by the communication machine industry association that defines a communication function.

  If “0” is set in the above speed item, V. 34 indicates that the communication is valid. When “1” is set, this indicates that the communication is invalid. Here, V. 34 communication refers to communication that enables communication between communication devices at a communication speed of 33.6 Kbps.

  When “0” is set in the resolution item, the resolution is defined as a high resolution, for example, “R8 × 15.4 lines / mm”, and when “1” is set, the resolution Is defined as a resolution other than the high resolution, for example, “R8 × 7.75 lines / mm”.

  When “0” is set in the above-mentioned encoding item, it is defined that the MMR encoding method indicating that the data compression of the facsimile data is high compression is adopted, and “1”. Is set, it is defined that an MR or MH encoding system indicating that data compression of facsimile data is low compression is employed.

  In the above-mentioned ECM item, when “0” is set, it indicates that error control is executed, and when “1” is set, it is specified that error control is not executed. .

  In the above F code item, when “0” is set, it indicates that the F code in the DIS signal is valid, and when “1” is set, the F code is changed. It is specified that it is invalid. Here, the F code is a name determined by the communication machine industry association concerning facsimile, and prescribes a predetermined function by bit 47, bit 49, and bit 50 forming a DIS signal to be described later. As a function defined by the F code, for example, there is a function of writing facsimile data on a bulletin board and reading facsimile data from the bulletin board. In addition, there is a function of writing facsimile data into a mailbox and reading the facsimile data from the mailbox.

  A reading device 15 shown in FIG. 1 is composed of, for example, a scanner device using a CCD or the like, reads a document, and converts image data of the read document into image data. The printing device 16 is, for example, a printer device such as a thermal recording method or an electrophotographic method, and hard copies image data received by facsimile communication to a printing medium.

  The modem 17 modulates / demodulates control data and image data transmitted / received to / from the counterpart communication device, and transmits / receives these data to / from a facsimile device as the counterpart communication device according to a facsimile transmission control procedure.

  The operation panel 18 includes a liquid crystal display (LCD), a CRT (Cathode-Ray Tube), and the like. As shown in FIG. 4, a display unit 181 for displaying the state of the device, an operation method, and the like, and function keys 182a And an operation unit 182 including four cursor keys 182b, a start key 182c, a stop key 182d, a character key 182e, a dial key 182f, and a set key 182g.

  An NCU (Network Control Unit) 19 controls communication connection and release between the modem 17 and the subscriber line switch 30.

  FIG. 5 is a functional block diagram illustrating functions of the communication apparatus according to the embodiment of the present invention. In the functional block diagram shown in FIG. 5, the CPU 11 executes the communication control program and the system control program stored in the ROM 12, whereby the operation panel control unit 110 and the terminal capability setting data generation unit 111 shown in FIG. 5 are executed. A reading control unit 112, an image data processing unit 113, a network control unit 114, a communication control unit 115, and a print control unit 116.

  The operation panel control unit 110 controls the operation panel 18 and executes a user interface. That is, the operation panel control unit 110 displays the terminal capability selection screen shown in FIG. 4 on the display unit 181 and also displays the telephone number selected by the user, and the F code, resolution, speed, ECM, and encoding. Information (hereinafter referred to as terminal capability selection information) is stored in the RAM 13. Then, operation panel control unit 110 outputs the above-described terminal capability setting data generation request to terminal capability setting data generation unit 111 based on this terminal capability selection information.

  The terminal capability setting data generation unit 111 reads terminal capability selection information from the RAM 13 in accordance with the generation request input from the operation panel control unit 110, generates terminal capability setting data based on the terminal capability selection information, This terminal capability setting data is registered in the terminal capability setting storage unit 142 of the flash memory 14.

  The reading control unit 112 controls the reading device 15 and executes a series of operations related to reading a document.

  The image data processing unit 113 uses the recommendation T.30. 4 (standardization of G3 facsimile machine for document transmission) and recommendation T.3. 6 (facsimile encoding method and encoding control function for G4 facsimile apparatus), the image data is compressed or expanded.

  The network control unit 114 controls the modem 17 and the NCU 19 to connect the own apparatus and the subscriber line switch 30 for communication. That is, when the network control unit 114 receives an information reception terminal activation signal for activating its own device from the subscriber line switch 30, the network control unit 114 closes the DC circuit of the NCU 19 and indicates that the own device can receive the MODEM signal. A signal is transmitted from the NCU 19 to the subscriber line switch 30. When the network control unit 114 receives a MODEM signal having the caller's outgoing telephone number from the subscriber line switch 30, it extracts the outgoing telephone number from the information contained in the received MODEM signal and flushes this outgoing telephone number. Stored in the outgoing telephone number storage unit 141 of the memory 14. Then, network control unit 114 outputs a request to display this calling telephone number on display unit 181 of operation panel 18 to operation panel control unit 110.

  Further, when the network control unit 114 stores the outgoing phone number in the outgoing phone number storage unit 141 of the flash memory 14, the network control unit 114 opens the DC circuit of the NCU 19, and then terminates reception of information such as the outgoing phone number. A reception completion signal is transmitted to the subscriber line switch 30.

  In addition, after transmitting the reception completion signal, the network control unit 114 closes the DC circuit of the NCU 19 when receiving a call signal from the subscriber line switch 30 during a predetermined period. A secondary response signal indicating that the response to the partner apparatus is completed is transmitted to the subscriber line switch 30. On the other hand, when the network control unit 114 does not receive a calling signal from the subscriber line switch 30 during the above-described period, the network control unit 114 deletes the calling telephone number stored in the calling telephone number storage unit 141 of the flash memory 14.

  The communication control unit 115 controls the facsimile transmission control procedure and the transmission / reception of image data via the modem 17 or the NCU 19, and as shown in FIG. 6, the phase B control unit 115a, the phase C control unit 115b, And a phase D control unit 115c.

  The phase B control unit 115a performs the recommendation T.30. 30 is executed to prepare for transmission of facsimile data by executing the contents of the phase B specified in 30, that is, the terminal transmission / reception sequential state, display and determination of terminal constants, confirmation of synchronization state, etc. A generation unit 115aa, an initial identification unit 115ab, and a DIS signal regeneration unit 115ac are provided.

  The DIS signal generation unit 115aa generates a DIS signal that defines the communication function of the device itself, and temporarily stores it in the RAM 13. When the DIS signal generator 115aa stores the DIS signal in the RAM 13, the terminal capability setting data in which the same outgoing telephone number as the outgoing telephone number stored in the outgoing telephone number storage 141 of the flash memory 14 is described, A search request as to whether or not it is stored in the terminal capability setting storage unit 142 is output to the initial identification unit 115ab.

  The initial identification unit 115ab determines whether or not the outgoing telephone number is stored in the outgoing telephone number storage unit 141 of the flash memory 14 in accordance with the search request input from the DIS signal generator 115aa. When the initial identification unit 115ab determines that the outgoing telephone number is stored in the outgoing telephone number storage unit 141, the initial identification unit 115ab reads the outgoing telephone number.

  In addition, the initial identification unit 115ab searches the terminal capability setting data stored in the terminal capability setting storage unit 142, and sets the terminal capability setting in which the same phone number as the last four digits of the previously read outgoing phone number is described. It is determined whether data is stored. If the initial identification unit 115ab determines that the terminal capability setting data in which the same phone number as the last four digits of the previously read outgoing phone number is described is stored, the terminal capability setting data is It reads out from the terminal capability setting storage unit 142 and outputs the read terminal capability setting data to the DIS signal regeneration unit 115ac.

  The DIS signal regeneration unit 115ac rewrites the DIS signal stored in the RAM 13 based on the terminal capability setting data input from the initial identification unit 115ab, and stores the rewritten DIS signal in the RAM 13.

  For example, when the ECM indicated in the DIS signal generated by the DIS signal generation unit 115aa is set not to perform error correction, and “0” is described in the ECM item of the terminal capability setting data The DIS signal regeneration unit 115ac sets bit 27 of the DIS signal to “1” to enable error correction.

  The phase C control unit 115b receives the recommendation T.30. The contents of phase C specified in 30 are executed. That is, the phase C control unit 115b performs control such as transmission of facsimile data, confirmation thereof, and synchronization maintenance.

  The phase D control unit 115c performs the recommendation T.30. The contents of phase D specified in 30 are executed. That is, the phase D control unit 115c performs facsimile data transmission completion and reception confirmation. When the facsimile data is continuously transmitted, the phase D control unit 115c shifts the control to the phase B control unit 115a or the phase C control unit 115b.

  The print control unit 116 controls the printing device 16 to execute a series of operations related to printing.

  Next, the operation of the communication apparatus according to the embodiment of the present invention will be described.

  FIG. 7 is a flowchart showing the operation of the communication apparatus according to the embodiment of the present invention. This flowchart shows an operation of registering terminal capability setting data in the terminal capability setting storage unit 142 of the flash memory 14. First, the user uses the four cursor keys 182b provided on the operation unit 182 to set the cursor in the terminal capability selection display input field in the initial menu screen (not shown) displayed on the display unit 181. Then, when the set key 182g is pressed, the operation panel control unit 110 displays the terminal capability selection screen shown in FIG. 4 on the display unit 181 (step S1), and sets the cursor at the location of the telephone number input field. To do.

  Thereafter, after the user inputs a telephone number into the telephone number input field using the dial key 182f (step S2) and then presses the set key 182g, the operation panel control unit 110 displays “valid” in the F code input field. Set the cursor to the place where is displayed. When the user validates the F code, the F code is effectively selected by pressing the set key 182g without moving the cursor position. On the other hand, when the user invalidates the F code, the cursor key 182b is used to move the cursor to the place where “invalid” is displayed in the F code input field, and then the set key 182g is pressed. To invalidate the F code (step S3). Thereafter, when the set key 182g is pressed, the operation panel control unit 110 sets a cursor at a position where “high resolution enabled” is displayed in the resolution input field.

  Thereafter, when the user makes high resolution effective, the resolution is selected to be high resolution by pressing the set key 182g without moving the cursor position. On the other hand, when the user invalidates the high resolution, the cursor is moved using the cursor key 182b to a position where “high resolution invalid” is displayed in the resolution input field, and then the set key 182g is pressed. Thus, it is selected that the resolution is not high resolution (high resolution invalid) (step S4). After that, when the set key 182g is pressed, the operation panel control unit 110 sets the cursor at a position where “V.34 valid” is displayed in the speed input field.

  After that, the user In order to set the speed at which 34 communication is enabled, the speed at which 34 communication is enabled is selected by pressing the set key 182g without moving the cursor position. On the other hand, if the user When the speed is set to invalidate the 34 communication, the cursor is moved using the cursor key 182b to the position where "V.34 invalid" is displayed in the speed input field, and then the set key 182g is pressed. V. 34 Select a speed for invalidating communication (step S5). Thereafter, when the set key 182g is pressed, the operation panel control unit 110 sets the cursor at a position where “valid” is displayed in the ECM input field.

  Thereafter, when the user validates ECM (error control), the user selects that the ECM (error control) is valid by pressing the set key 182g without moving the cursor position. On the other hand, when the user invalidates the ECM, the cursor is moved to a position where “invalid” is displayed in the ECM input field by using the cursor key 182b, and then the set key 182g is pressed. It is selected that ECM (error control) is invalid (step S6). When the set key 182g is pressed, the operation panel control unit 110 sets a cursor at a position where “high compression enabled” is displayed in the encoding input field.

  Thereafter, when the data compression of the image data transmitted / received by the user is high compression, the data compression of the image data transmitted / received is high compression by pressing the set key 182g without moving the cursor position. Select. On the other hand, when the image data transmitted and received by the user is not highly compressed, the cursor is moved to a position where “high compression invalid” is displayed in the encoding input field, and then set. By pressing the key 182g, it is selected that the image data to be transmitted / received is not highly compressed (step S7).

  When the set key 182g is pressed to select high compression or not high compression, the operation panel control unit 110 displays a telephone number input field displayed on the terminal capability selection screen of the display unit 181. These pieces of information specified in the F code input field, resolution input field, speed input field, ECM input field, and encoding input field (hereinafter referred to as terminal capability selection information) are stored in the RAM 13. Next, operation panel control unit 110 outputs a terminal capability setting data generation request to terminal capability setting data generation unit 111.

  Thereafter, when the above generation request is input from the operation panel control unit 110, the terminal capability setting data generation unit 111 reads the terminal capability selection information from the RAM 13, and based on this terminal capability selection information, the terminal capability setting data described above is read out. Is generated (step S8). Next, the terminal capability setting data generation unit 111 registers the generated terminal capability setting data in the terminal capability setting storage unit 142 of the flash memory 14 (step S9), and ends the process.

  For example, as shown in FIG. 4, the telephone number input field on the terminal capability selection screen is “1122”, the F code input field is “valid”, the resolution input field is “high resolution valid”, and the speed input field. Is “V.34 valid”, the ECM input field is “valid”, and the encoding input field is “high compression valid”, the telephone number item is “1122”. Terminal capability setting in which the speed item is “0”, the resolution item is “0”, the encoding item is “0”, the ECM item is “0”, and the F code item is “0” Data is generated by the terminal capability setting data generation unit 111, and this terminal capability setting data is registered in the terminal capability setting storage unit 142 (see FIG. 3).

  FIG. 8 is a flowchart showing the operation of the communication apparatus according to the embodiment of the present invention. This flowchart shows the operation of the network control unit 114 in FIG. The various signals shown in the description of the operation are those defined in “Telephone Service Interface” 5th edition issued by Nippon Telegraph and Telephone Corporation.

  The network control unit 114 determines whether or not an information reception terminal activation signal for activating its own device is received from the subscriber line switch 30 (step S11). When it is determined that the information receiving terminal activation signal has not been received (step S11; N), the network control unit 114 ends the process. On the other hand, when it is determined that the information receiving terminal activation signal has been received (step S11; Y), the network control unit 114 closes the DC circuit of the NCU 19 so that the primary response signal is sent from the NCU 19 to the subscriber line switch 30. (Step S12). As a result, the subscriber line switch 30 recognizes that the facsimile apparatus 10 is ready to receive information.

  Thereafter, when the network control unit 114 receives a MODEM signal having a transmission source telephone number or the like from the subscriber line switch 30 (step S13), the network control unit 114 extracts the transmission telephone number from the information included in the received MODEM signal, The telephone number is stored in the outgoing telephone number storage unit 141 of the flash memory 14 (step S14). Next, network control unit 114 outputs a request to display this calling telephone number on display unit 181 of operation panel 18 to operation panel control unit 110.

  When the above-described request is input, operation panel control unit 110 reads the call telephone number from call number storage unit 141 of flash memory 14, and displays this call telephone number on display unit 181 of operation panel 18 (step S15). ).

  When the network control unit 114 stores the outgoing phone number in the outgoing phone number storage unit 141 of the flash memory 14, the network control unit 114 opens the DC circuit of the NCU 19, and then receives information indicating that the reception of the information such as the outgoing phone number has ended. A completion signal is transmitted to the subscriber line switch 30 (step S16). Thereby, the subscriber line switch 30 recognizes that the facsimile apparatus 10 has finished receiving the calling telephone number.

  After transmitting the reception completion signal, the network control unit 114 determines whether a call signal indicating that there is an incoming call from the subscriber line switch 30 is received during a predetermined period (step S17). . If the network control unit 114 determines that the paging signal is received from the subscriber line switch 30 during the above-described period (step S17; Y), the network control unit 114 closes the DC circuit of the NCU 19 and then the own device A secondary response signal indicating that the response to the apparatus is completed is transmitted to the subscriber line switch 30 (step S18), and the process is terminated.

  On the other hand, when it is determined that the network control unit 114 does not receive a call signal from the subscriber line switch 30 during the above-described period (step S17; N), the network control unit 114 stores it in the calling telephone number storage unit 141 of the flash memory 14. The calling telephone number that has been set is deleted (step S19), and the process is terminated.

  FIG. 9 is a flowchart showing the operation of the communication apparatus according to the embodiment of the present invention. In this flowchart, the communication control unit generates and transmits a DIS signal. When the phase B control unit 115a of the communication control unit 115 receives an activation request from the network control unit 114, the DIS signal generation unit 115aa generates a DIS signal that defines the communication function of the own device and temporarily stores it in the RAM 13. (Step S21). Next, the DIS signal generation unit 115aa stores in the terminal capability setting storage unit 142 the terminal capability setting data in which the same outgoing phone number as that stored in the outgoing phone number storage unit 141 of the flash memory 14 is described. A search request as to whether or not it is stored is output to the initial identification unit 115ab (step S22).

  When the above search request is input from the DIS signal generation unit 115aa, the initial identification unit 115ab accesses the outgoing phone number storage unit 141 of the flash memory, and the outgoing phone number is stored in the outgoing phone number storage unit 141 of the flash memory 14. It is determined whether it is stored (step S23). If the initial identification unit 115ab determines that the calling telephone number is stored in the calling telephone number storage unit 141 (step S23; Y), the initial identifying unit 115ab reads the calling telephone number (step S24).

  Next, the initial identification unit 115ab compares the retrieved telephone number with the telephone number of the terminal capability setting data stored in the terminal capability setting storage unit 142, and searches for the last four digits of the outgoing telephone number read out earlier. It is determined whether terminal capability setting data describing the same telephone number is stored (step S25). If the initial identification unit 115ab determines that the terminal capability setting data in which the same phone number as the last four digits of the previously read outgoing phone number is described is stored (step S25; Y), this terminal The capability setting data is read from the terminal capability setting storage unit 142, and the read terminal capability setting data is output to the DIS signal regeneration unit 115ac.

  When the terminal capability setting data is input from the initial identification unit 115ab, the DIS signal regenerating unit 115ac rewrites the DIS signal stored in the RAM 13 on the basis of the terminal capability setting data, and converts the rewritten DIS signal to the RAM 13 (Step S26).

  In other words, the DIS signal regenerating unit 115ac, when “0” is described in the speed item of the terminal capability setting data, 34, when the bit 6 of the DIS signal is set to “1” in order to validate the communication and “1” is described in the speed item, 34 Bit 6 of the DIS signal is set to “0” to invalidate communication.

  In addition, when “0” is described in the resolution item of the terminal capability setting data, the DIS signal regeneration unit 115ac makes the resolution high resolution defined by R8 × 15.4 lines / mm. If the bit 41 of the DIS signal is set to “1” and “1” is described in the resolution item, the bit 41 of the DIS signal is set to “0” in order not to make the resolution high.

  Further, when “0” is described in the encoding item of the terminal capability setting data, the DIS signal regeneration unit 115ac sets the bit 31 of the DIS signal to “1” in order to validate the highly compressed facsimile data. On the other hand, when “1” is described in the encoding item, the bit 41 of the DIS signal is set to “0” in order to invalidate the highly compressed facsimile data.

  Further, when “0” is described in the ECM item of the terminal capability setting data, the DIS signal regeneration unit 115ac sets the bit 27 of the DIS signal to “1” in order to enable error correction. When “1” is described in the ECM item, bit 27 of the DIS signal is set to “0” in order to invalidate error correction.

  In addition, when “0” is described in the F code item of the terminal capability setting data, the DIS signal regenerating unit 115ac uses bits 47, 49, and 49 of the DIS signal to validate the F code. 50 is set to “1”, while “1” is described in the F code item, the bits 47, 49, and 50 of the DIS signal are set to “1” in order to invalidate the F code. To do.

  For example, in the DIS signal reproduced based on the terminal capability setting data indicated by the symbol A in FIG. 3, bit 6 is “1”, bit 27 is “1”, bit 31 is “1”, bit 41 is “1”, bit 47 is “1”, bit 49 is “1”, and bit 50 is “1”. In the DIS signal reproduced based on the terminal capability setting data indicated by the symbol B in FIG. 3, bit 6 is “0”, bit 27 is “0”, bit 31 is “0”, bit 41 is “1”, bit 47 is “1”, bit 49 is “1”, and bit 50 is “1”. In the DIS signal reproduced based on the terminal capability setting data indicated by the symbol C in FIG. 3, bit 6 is “0”, bit 27 is “0”, bit 31 is “0”, bit 41 is “0”, bit 47 is “0”, bit 49 is “0”, and bit 50 is “0”.

  In step S26, the DIS signal regeneration unit 115ac rewrites the DIS signal stored in the RAM 13 based on the terminal capability setting data. When the rewritten DIS signal is stored in the RAM 13, the DIS signal is read from the RAM 13, and the communication is performed. Output to the control unit 115.

  The communication control unit 115 transmits the input DIS signal to the other party's facsimile apparatus via the modem 17 and the NCU 19 and the subscriber line switch 30 (step S27), and ends the process.

  In step S23, when the initial identification unit 115ab determines that the outgoing telephone number is not stored in the outgoing telephone number storage unit 141 (step S23; N), the process proceeds to step S27.

  If the initial identification unit 115ab determines in step S25 that terminal capability setting data in which the telephone number identical to the last four digits of the previously read outgoing telephone number is described is not stored (step S25; N ), The outgoing telephone number stored in the outgoing telephone number storage unit 141 of the flash memory 14 is deleted (step S28), and the process proceeds to step S27.

  FIG. 10 is a sequence diagram illustrating a transmission control procedure of the communication apparatus according to the embodiment of the present invention. That is, the communication apparatus 10 is recommended T.30. FIG. 30 is a diagram for explaining a facsimile transmission control processing procedure performed according to 30. The facsimile transmission control processing procedure will be described below with reference to FIG. Here, the communication apparatus 10 as a receiving facsimile apparatus in FIG. 10 is a communication apparatus having the configuration of the embodiment according to the present invention. Further, it is assumed that the subscriber line switch 30 is installed in the exchange network of Nippon Telegraph and Telephone Corporation and provides a number display service.

  When the communication device 50 on the transmission side makes a dial call to the subscriber line switch 30 (see T1 in FIG. 10), the subscriber line switch 30 uses the information reception terminal activation signal that activates the communication device 10 on the reception side. (See T2 in FIG. 10).

  When receiving the information receiving terminal activation signal, the communication device 10 transmits a primary response signal indicating that the information can be received to the subscriber line switch 30 (see T3 in FIG. 10).

  When the primary response signal is transmitted from the communication device 10, the subscriber line switch 30 transmits a MODEM signal having information such as a transmission number to the receiving communication device 10 (see T4 in FIG. 10). Thereafter, the subscriber line switch 30 enters a reception completion signal arrival waiting state. If the subscriber line switch 30 cannot recognize the primary response signal within a predetermined time, the subscriber line switch 30 stops the information receiving terminal activation signal and transmits the calling signal to the communication device 10 on the receiving side.

  When the communication apparatus 10 receives the MODEM signal transmitted from the subscriber line switch 30, the communication apparatus 10 displays the calling telephone number indicated by the MODEM signal on the display unit 181 of the operation panel 18 and the calling telephone of the flash memory 14. The number is stored in the number storage unit 141. Thereafter, the communication device 10 transmits a reception completion signal indicating that reception of information such as the calling telephone number has been completed to the subscriber line switch 30 via the modem 17 and the NCU 19 (see T5 in FIG. 10).

  When the reception completion signal is received from the communication device 10, the subscriber line switch 30 transmits a call signal indicating that there is an incoming call to the communication device 10 (see T6 in FIG. 10).

  When the communication device 10 receives the above calling signal transmitted by the subscriber line exchange 30, the communication device 10 closes the DC circuit of the NCU 19, and then the secondary response indicating that the device itself has completed the sequential response to the partner device. The signal is transmitted to the subscriber line switch 30 (see T7 in FIG. 10).

  Thereafter, the communication device 50 on the transmission side transmits a calling tone (CNG signal) to the communication device 10 on the reception side via the subscriber line switch 30 (see T8 in FIG. 10).

  When receiving the CNG signal transmitted from the transmitting communication device 50, the receiving communication device 10 transmits a CED signal (called terminal identification signal) to the transmitting communication device 50 via the subscriber line switch 30. (Refer to T9 in FIG. 10).

  Thereafter, if necessary, the communication device 10 on the receiving side transmits the DIS signal generated as described above to the communication device 50 on the transmitting side via the subscriber line switch 30 (see T10 in FIG. 10). .

  When a DIS signal is transmitted via the subscriber line switch 30, the communication device 50 on the transmission side communicates the communication capability declared in the input DIS signal and the communication function capability that can be supported by the own device. Is transmitted to the communication device 10 on the receiving side via the subscriber line switch 30 (see T11 in FIG. 10).

  Thereafter, when receiving the facsimile data, the transmitting communication device 50 transmits a TCF signal, which is a training check signal for adjusting the modem 17, to the receiving communication device 10 via the subscriber line switch 30. (See T12 in FIG. 10).

  When the communication device 10 on the receiving side receives the TCF signal, the modem 17 adjusts the facsimile data so that it can be received. Thereafter, the communication device 10 on the reception side transmits a CFR signal indicating that transmission of facsimile data may be started to the communication device 50 on the transmission side via the subscriber line switch (see T13 in FIG. 10). ).

  When receiving the CFR signal transmitted by the receiving communication device 10, the transmitting communication device 50 sequentially reads out the image data stored in the RAM 13, and receives this image data via the subscriber line switch 30. The data is sequentially transmitted to the communication device 10 in units of pages (see T14 in FIG. 10).

  When the transmission-side communication device 50 has transmitted all the image data to the communication-side reception-side communication device 10, the transmission-side communication device 50 sends an EOP signal to the reception-side communication device 10 indicating that all pages of the image data have been transmitted. Transmit (see T15 in FIG. 10).

  When receiving the EOP signal, the receiving communication device 10 transmits an MCF signal indicating that the image data has been received to the transmitting communication device 50 (see T16 in FIG. 10).

  When receiving the MCF signal transmitted from the receiving communication device 10, the transmitting communication device 50 transmits a DCN signal for requesting communication disconnection to the receiving communication device 10 (see T17 in FIG. 10).

  Thereafter, the communication device 50 on the transmission side transmits a disconnection signal requesting disconnection of the line to the subscriber line switch 30 (see T18 in FIG. 10). When receiving the DCN signal transmitted from the transmitting communication device 50, the receiving communication device 10 transmits a disconnection signal for requesting disconnection to the subscriber line switch 30 (see T19 in FIG. 10).

  When the subscriber line switch 30 receives the disconnection signal transmitted by the communication device 50 on the transmission side and the communication device 10 on the reception side, the subscriber line switch 30 establishes a line between the communication device 50 on the transmission side and the communication device 10 on the reception side. Disconnect.

  FIG. 11 is a sequence diagram illustrating the operation of the communication apparatus according to the embodiment of this invention. Here, the communication device 50 on the transmission side in FIG. 8 and the communication device 10 on the receiving side has the configuration of the embodiment according to the present invention and the recommendation V.10. 8 is a communication device having the function defined in FIG. First, from a process in which the communication device 50 on the transmission side dials the subscriber line switch 30 (see T21 in FIG. 11), a process in which the communication device 10 on the reception side transmits a secondary response signal to the subscriber line switch 30. Up to (T27 in FIG. 11), it is the same as the sequence operation shown in FIG.

  Thereafter, the communication device 50 on the transmission side transmits a calling tone (CNG signal) to the communication device 10 on the reception side via the subscriber line switch 30 (see T28 in FIG. 11).

  When the communication device 50 on the transmission side and the communication device 10 on the reception side are communicatively connected via a telephone line, the communication device 10 on the reception side sends a recommendation V to the communication device 50 on the transmission side via the subscriber line switch 30. . The ANSam signal is transmitted in accordance with 8 (see T29 in FIG. 11).

  When the ANSam signal is transmitted via the subscriber line switch 30, the communication device 50 on the transmission side receives the recommendation V.3. Recommendation V. declares that the device is to execute 8 is transmitted to the communication device 10 on the receiving side via the subscriber line switch 30 (see T30 in FIG. 11).

  When a CM signal is transmitted, the communication device 10 on the receiving side has a communication speed of 33.6 kbit / s and a recommendation V.10 that specifies communication processing by a two-wire full-duplex modem. 34, a JM signal declaring that communication processing is to be performed is transmitted to the communication device 50 on the transmission side via the subscriber line switch 30 (see T31 in FIG. 11).

  Thereafter, the process in which the communication device 10 on the receiving side transmits a DIS signal to the communication device 50 on the transmission side (see T32 in FIG. 11) and the process in which the DCS signal is received from the communication device 50 on the transmission side (in FIG. 11). Is the same as the sequence operation shown in FIG.

  Next, the communication device 10 on the receiving side transmits a CFR signal (see T34 in FIG. 11) to the communication device on the transmission side, and then the communication device 50 on the transmission side and the communication device 10 on the reception side are connected to the subscriber line switch. (See T39 and T40 in FIG. 11), and the process until the subscriber line switch 30 disconnects the communication line between the communication device 50 on the transmission side and the communication device 10 on the reception side is This is the same as the sequence operation shown in FIG.

  According to the embodiment, terminal capability setting data in which the same telephone number as the telephone number transmitted by the communication device 50 on the transmission side, which is an old communication device on the transmission side, is described by the initial identification unit 115ab of the communication control unit 115, If it is determined that it is registered in the terminal capability setting storage unit 142 of the flash memory 14, the DIS signal regenerating unit 115ac, based on the terminal capability setting information described in the terminal capability setting data, Since the DIS signal that defines the capability of the communication function is regenerated, the communication device 50 on the transmission side that has received this DIS signal can respond to the received DIS signal. As a result, it is possible to prevent the occurrence of communication failure with the old facsimile apparatus.

  In the embodiment, the facsimile apparatus is described as the communication apparatus. However, it goes without saying that the present invention can be applied to other communication apparatuses such as MPF (Multifunction Peripheral) and FAX modems.

It is a block diagram which shows the structure of the communication apparatus of the Example which concerns on this invention. FIG. 2 is a block diagram showing a configuration of a flash memory in FIG. 1. It is a figure explaining the terminal capability setting storage part in FIG. It is a figure explaining the operation panel in FIG. It is a functional block diagram which shows the function of the communication apparatus of the Example which concerns on this invention. It is a block diagram which shows the structure of the communication control part in FIG. It is a flowchart which shows operation | movement of the communication apparatus of the Example which concerns on this invention. It is a flowchart which shows operation | movement of the communication apparatus of the Example which concerns on this invention. It is a flowchart which shows operation | movement of the communication apparatus of the Example which concerns on this invention. It is a sequence diagram which shows the transmission control procedure of the communication apparatus of the Example which concerns on this invention. It is a sequence diagram which shows the transmission control procedure of the communication apparatus of the Example which concerns on this invention.

Explanation of symbols

10 Communication device 11 CPU
110 Operation Panel Control Unit 111 Terminal Capability Setting Data Generation Unit 112 Reading Control Unit 113 Image Data Processing Unit 114 Network Control Unit 115 Communication Control Unit 115a Phase B Control Unit 115aa DIS Signal Generation Unit 115ab Initial Identification Unit 115ac DIS Signal Regeneration Unit 115b Phase C control unit 115c Phase D control unit 12 ROM
13 RAM
14 Flash memory 15 Reading device 16 Printing device 17 Modem 18 Operation panel 181 Display unit 182 Operation unit 19 NCU
20 System bus 30 Subscriber line switch

Claims (3)

A communication device that connects to a telephone line and performs data communication via the telephone line,
A source number acquisition unit for acquiring a source number corresponding to the pre-communication information notification service;
A caller number storage unit for storing a caller number input from the outside;
A comparison unit that compares the transmission source number acquired by the transmission source number acquisition unit with the transmission source number stored in the transmission source number storage unit;
A communication control unit configured to change reception capability information to be transmitted when data is received based on a comparison result of the comparison unit; The transmission source number storage unit stores communication function specification information that specifies a communication function when data communication is performed between the transmission number and a communication device of the transmission source number,
The comparison unit compares the transmission source number acquired by the transmission source number acquisition unit with the transmission source number stored in the transmission source number storage unit, and the transmission acquired by the transmission source number acquisition unit Determine whether the original number is stored in the source number storage unit,
When the comparison unit determines that the source number acquired by the source number acquisition unit is stored in the source number storage unit, the communication control unit associates the source number with the source number. The communication apparatus according to claim 1, wherein the reception capability information is changed based on the received communication function definition information. A display screen display unit for displaying a display screen having an input field for inputting the transmission source number and the communication function definition information;
An input unit for inputting the source number and communication function definition information in the input field displayed on the display unit;
The communication apparatus according to claim 2, further comprising: a transmission source number registration unit that registers the transmission source number and communication function definition information input by the input unit in the transmission source number storage unit.

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