JP2006054585A - Communication terminal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a communication terminal device, such as a facsimile device, etc. which can alleviate a subsequent communication error when data communication, such as image communication, etc. is performed through an IP telephone network. <P>SOLUTION: A main controller 1 of the facsimile device 20 is memory transmission which transmits once storing image data in a storage. In the last communication, it sends to counterpart's communication terminal device through an IP telephone network. It is not dial errors which capability do not become mismatching by capability exchanging with the counterpart's communication terminal device, and is generated between connections with the counterpart's communication terminal device since dialling. It is YES in (YES in S2 and NO all in S3-S5) at the time of control conditions which are not performed by directing the communication, and it is controlled so that a redial may be performed through the IP telephone network (S6, S8, S15). <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a communication terminal apparatus such as a facsimile apparatus having a function of switching between an IP telephone network and a general public telephone network.

  For example, Patent Document 1 discloses the following facsimile apparatus for preventing repeated line disconnection processing and redialing by a modem. ITU-T Recommendation V. According to the function defined in 34, training is performed without control of the CPU between the modem and the modem of the called station, and a unique negotiation for determining the data rate is executed. When the negotiation is not established and a line disconnection process due to a communication error is performed, the communication management information storage RAM stores and stores the communication management information. Thereafter, when executing the redial process, the CPU executes the ITU-T recommendation V.30. 34 eliminates modem-specific negotiations. Then, the CPU executes a negotiation for controlling the modem. 17, V.R. 29, V.R. A transmission mode with a communication capability of 27ter is selected.

In a general facsimile machine, when a communication error occurs in so-called “memory transmission” in which image data is temporarily stored in an image memory and then transmitted by facsimile, control is performed so that redial is executed only in the case of the following communication error. Yes.
(A) When there is no response signal from the counterpart device for the post message, specifically, when the MCF, RTN, RTP, PIP or PIN signal cannot be received.
(B) When the RTN signal is transmitted and received when the partner apparatus has a plurality of error lines in the image data when the ECM transmission is not performed.

Japanese Patent Laid-Open No. 10-327309.

  However, in facsimile communication via the IP telephone network, there may be many communication errors during handshaking. However, the conventional facsimile apparatus has a problem in that it cannot redial and retransmit image data.

  The object of the present invention is to solve the above-mentioned problems, and when data communication such as image communication is executed via the IP telephone network, subsequent communication errors can be reduced and the probability of normal facsimile transmission is increased. An object of the present invention is to provide a communication terminal device such as a facsimile machine.

  A communication terminal device according to a first aspect of the present invention is a memory transmission that transmits data after it is temporarily stored in a storage device, and transmits to the other party's communication terminal device via the IP telephone network in the previous communication. When the control conditions are not instructed to stop communication, not the dial error that occurred during the connection from the dial start to the communication terminal device of the other party, and the capability does not match in the capability exchange with the communication terminal device Control means for controlling redialing via the IP telephone network is provided.

  In the communication terminal apparatus, the control means redials a predetermined number of times via the IP telephone network, and then transmits to the communication terminal apparatus of the other party via another telephone network under the control conditions. It is characterized by controlling to.

  The communication terminal device according to the second invention is a memory transmission for transmitting data after it is temporarily stored in a storage device, and is transmitted to the other communication terminal device via the IP telephone network in the previous communication. When the control conditions do not indicate that communication is not instructed, not because of a dial error that has occurred between the start of dialing and the connection with the communication terminal device of the other party, due to the capability exchange with the communication terminal device, Control means for controlling to make a call to the communication terminal device of the other party via the telephone network.

  In the communication terminal device, the other telephone network is a general public telephone network.

  In the communication terminal device, the control means communicates via another telephone network before the other party's telephone number when making a call to the other party's communication terminal apparatus via the other telephone network. In this case, the telephone number is switched to another telephone network by adding a switching number.

  According to the communication terminal apparatus according to the present invention, there are many communication errors during handshaking in communication via the IP telephone network, but the conventional process is terminated (no redial retransmission) by performing the control process according to the present invention. A communication error that has been redialed again can be increased, thereby increasing the probability of normal transmission. As a result, communication errors can be reduced, thereby reducing the overall communication time and the amount of communication.

  Embodiments according to the present invention will be described below with reference to the drawings.

<Embodiment>
FIG. 1 is a block diagram showing a configuration of a facsimile apparatus 20 having a function of switching between an IP telephone network and a general public telephone network, which is an embodiment according to the present invention.

  The main control unit 1 of the facsimile apparatus 20 according to this embodiment is a memory transmission that transmits image data after temporarily storing it in a storage device, and transmits it to the communication terminal device of the other party via the IP telephone network in the previous communication. Control conditions that do not indicate that the communication is not disagreeable due to the capability exchange with the communication terminal device of the other party, and that the communication is not instructed to stop communication, rather than a dial error that occurs between the start of dialing and the connection with the communication terminal device of the other (Hereinafter referred to as control conditions) (YES in step S2 of FIG. 2 and NO in steps S3-S5), control is performed so that redialing is performed via the IP telephone network (steps S6, S8, S15). It is characterized by.

  In FIG. 1, a facsimile machine 20 has a conventional facsimile communication function such as a G3 system and a function for switching between an IP telephone network and a general public telephone network. The main control unit 1 is specifically composed of a CPU, and is connected to the following hardware units via the bus 13 to control them, and executes various software functions to be described later. The image reading unit 2 reads a document with a scanner using a CCD or the like, and outputs dot image data converted into black and white binary. The image recording unit 3 is an electrophotographic printer or the like, and prints out image data received from another facsimile apparatus by facsimile communication as a hard copy and records it. The display unit 4 is a display device such as a liquid crystal display device (LCD) or a CRT display, and displays the operation state of the facsimile device 20 and displays image data of a document to be transmitted and received image data. .

  The operation unit 5 includes character keys necessary for operating the facsimile apparatus 20, a dial keypad, a speed dial key, a one-touch dial key, various function keys, and the like. In addition, you may comprise so that a part or all of the various keys of this operation part 5 may be substituted by making the above-mentioned display part 4 into a touch panel system.

  The ROM 6 stores in advance various software programs that are necessary for the operation of the facsimile apparatus 20 and are executed by the main control unit 1. Here, the programs are at least programs for the transmission processing shown in FIGS. 2 and 3. including. The RAM 7 is configured by SRAM, flash memory, or the like, and is used as a working area for the main control unit 1 to store temporary data generated when the program is executed. When a flash memory is used as the RAM 7, the contents of the data are not lost even when the power is cut off due to a power failure, movement of the device, or the like. The image memory 8 is composed of a DRAM or the like, and stores image data to be transmitted or received image data. Note that the RAM 7 and the image memory 8 may be constituted by a hard disk memory.

  The fax modem 10 is a modem connected to the public telephone line L and having a function of a fax modem for normal facsimile communication. The fax modem 10 demodulates data of outgoing telephone number information received as an FSK signal and sends it to the main control unit 1. Output. An NCU (Network Control Unit) 11 is a hardware circuit that performs an operation of closing and opening a DC loop of an analog public telephone line L and having an automatic dial function. Is connected to the public telephone line L. Here, the NCU 11 detects the ID receiving terminal activation signal and the normal telephone call signal in the outgoing telephone number notification service, and transmits the primary response signal and the secondary response signal in the outgoing telephone number notification service as necessary. can do. The NCU 11 may be connected to a baseband transmission type digital line (for example, an ISDN line) via a predetermined terminal adapter and a DSU (Subscriber Line Termination Unit: Digital Service Unit).

  The facsimile apparatus 20 of the present embodiment configured as described above has a function of switching between an IP telephone network and a general public telephone network in addition to a normal facsimile communication function such as the G3 system. In the facsimile communication function, the dot image data read by the image reading unit 2 is encoded by software in accordance with an encoding method such as MH, MR, or MMR defined by the standard for facsimile communication, and then the counterpart facsimile machine On the other hand, the encoded data received from the facsimile machine of the other party is also decoded into image data by software and output from the image recording unit 3 as a hard copy. The image memory 8 stores the image data as necessary, and conversely outputs the stored image data as necessary.

  FIGS. 2 and 3 are flowcharts showing a transmission process according to the embodiment, which is executed by the main control unit 1 of the facsimile machine 20 of FIG.

  It is determined whether or not a call is made in step S1 of FIG. 2. If YES, the process proceeds to step S2, while if NO, the process returns to step S1. In step S2, it is determined whether or not the memory data is to be transmitted after the image data is temporarily stored in the image memory 8. If YES, the process proceeds to step S3. If NO, the process proceeds to step S7 in FIG. Next, in step S3, it is determined whether or not the previous communication in the same job is a capability mismatch error in which the capabilities are not matched due to capability exchange with the counterpart communication terminal apparatus. If YES, step S7 in FIG. On the other hand, if NO, the process proceeds to step S4. Further, in step S4, it is determined whether or not the previous communication in the same job is a dial error. If YES, the process proceeds to step S7 in FIG. 3, whereas if NO, the process proceeds to step S5. Here, the dial error is an error that occurs during the connection from the start of dialing to the other party's facsimile machine, for example, due to reasons such as the other party is busy, the line connection has failed, or the other party is not a facsimile machine. is there.

  Further, in step S5, it is determined whether or not the stop key is turned on to stop communication. If YES, the process proceeds to step S7 in FIG. 3, whereas if NO, the process proceeds to step S6. In step S6, after the “0000” addition mode is set, the process proceeds to step S7 in FIG.

  Next, in step S7, it is determined whether or not the “0000” addition mode is set. If YES, the process proceeds to step S8, and if NO, the process proceeds to step S9. In step S8, after dialing "0000" (switching number for communication via the general public telephone network), the other party's telephone number is dialed, and the process proceeds to step S10. In step S9, the other party's telephone number is dialed, and the process proceeds to step S10. Then, in step S10, it is determined whether or not “0000” has been transmitted. If YES, the process proceeds to step S15. If NO, the process proceeds to step S11. In step S11, a 10-second timer is started. Then, in step S12, it is determined whether or not an IP telephone ringing tone has been detected. If YES, the process proceeds to step S13. If NO, the process proceeds to step S14. Here, the IP phone ringing tone sent to the calling terminal within a predetermined time after dialing the other party's phone number is, for example, “pup” indicating a connection to the IP phone network. When connecting to the general telephone network instead of the IP telephone network, there is a case where there is no ringing tone for this IP telephone, or another ringing tone such as “puppup” may be transmitted.

  In step S13, after setting the IP phone ringing tone detection flag, the process proceeds to step S15. On the other hand, it is determined in step S14 whether or not the 10-second timer has expired. If YES, the process proceeds to step S15. If NO, the process returns to step S12. After the facsimile transmission process is executed in step S15, the line is released in step S16, and the process returns to step S1 in FIG.

  As described above, according to the present embodiment, the main control unit 1 is a memory transmission that transmits image data after temporarily storing it in the storage device, and communicates with the other party via the IP telephone network in the previous communication. A call is sent to the terminal device, and the communication is instructed to stop communication instead of a dial error that occurred between the start of dialing and the connection with the communication terminal device of the other party. When the control condition is not set (YES in step S2 in FIG. 2 and NO in steps S3-S5), control is performed so that redialing is performed via the IP telephone network (steps S6, S8, S15). Accordingly, in communication via the IP telephone network, there are many communication errors during handshaking. However, by performing the control processing according to the present embodiment, redial retransmission is also performed for communication errors that have been terminated (no redial retransmission). Thus, the probability of normal transmission can be increased. As a result, communication errors can be reduced, thereby reducing the overall communication time and the amount of communication.

<Modification>
In the above embodiment, control is performed so that redial is performed via the IP telephone network under the control conditions (steps S6, S8, S15). (The number of times is a predetermined number of times), and then, when the above control conditions are met, control is performed so that a call is sent to the other party's facsimile machine via another telephone network such as a public telephone network. May be. Further, it may be controlled to make a call to the other party's facsimile machine via another telephone network such as a public telephone network under the above control conditions.

  In the above embodiment, an example of the facsimile apparatus 20 is described. However, the present invention is not limited to this, and for example, an image connected to a public network such as an IP telephone network, a public telephone network, or a public digital circuit network. The present invention can be applied to communication terminal devices including data communication devices that transmit and receive various data such as data, voice data, and information data.

  In the above embodiment, a general public telephone network is used as another telephone network. However, the present invention is not limited to this, and another communication network such as a dedicated line or the Internet may be used.

  In the above embodiment, “0000” is used as the switching number for communication via the general public telephone network. However, the present invention is not limited to this, and other numbers that are the switching number are used. May be.

1 is a block diagram illustrating a configuration of a facsimile machine 20 having a function of switching between an IP telephone network and a general public telephone network according to an embodiment of the present invention. It is a flowchart which shows the 1st part of the transmission process which is performed by the main control part 1 of the facsimile apparatus 20 of FIG. 1 which concerns on embodiment. It is a flowchart which shows the 2nd part of the transmission process which concerns on embodiment performed by the main control part 1 of the facsimile apparatus 20 of FIG.

Explanation of symbols

1 ... main control part,
2. Image reading unit,
3 ... image recording unit,
4 ... display part,
5 ... operation part,
6 ... ROM,
7 ... RAM,
8 ... Image memory,
10. Fax modem,
11 ... NCU,
13 ... Bus
20 ... facsimile machine,
L: Public telephone line.

Claims (5)

  Memory transmission to be transmitted after data is temporarily stored in the storage device. In the previous communication, the data is transmitted to the other party's communication terminal device via the IP telephone network, and the capabilities are not matched by the capability exchange with the other party's communication terminal device. Control is made so that redial is performed via the IP telephone network when the control condition is not instructed to stop communication, rather than a dial error occurring between the start of dialing and the connection with the other party's communication terminal device. A communication terminal device comprising control means for performing   The control means controls to redial a predetermined number of times via the IP telephone network and then to send to the communication terminal device of the other party via another telephone network under the control conditions. The communication terminal device according to claim 1.   Memory transmission to be transmitted after data is temporarily stored in the storage device. In the previous communication, the data is transmitted to the other party's communication terminal device via the IP telephone network, and the capabilities are not matched by the capability exchange with the other party's communication terminal device. The communication terminal of the other party via another telephone network is not a dial error that has occurred between the start of dialing and the connection with the communication terminal apparatus of the other party, and when there is a control condition in which communication stop is not instructed. A communication terminal apparatus comprising control means for controlling to transmit to the apparatus.   4. The communication terminal apparatus according to claim 2, wherein the other telephone network is a general public telephone network. The control means adds a switching number for communication via another telephone network before the other party's telephone number when making a call to the other party's communication terminal device via the other telephone network. 5. The communication terminal device according to claim 1, wherein the communication terminal device is switched to another telephone network to make a call.

Images