JP4444427B2 - COMMUNICATION DEVICE, COMMUNICATION DEVICE CONTROL METHOD, AND COMPUTER-READABLE STORAGE MEDIUM CONTAINING COMMUNICATION DEVICE CONTROL PROGRAM - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a communication device having a data communication function, a control method thereof, and a computer-readable storage medium storing the control program.
[0002]
[Prior art]
In recent years, ISDN (Integrated Services Digital Network) is becoming widespread. The basic interface of ISDN can use a plurality of so-called “2B + D” channels comprising two 64 kbps B channels and a D channel used for outgoing / incoming control between the terminal and the network.
[0003]
Conventionally, a system capable of performing a three-party or conference call by simultaneously using a plurality of “2B + D” channels has been considered.
[0004]
For example, Japanese Patent Application Laid-Open No. 06-253028 describes a simple three-party call system that allows a conference call to be performed without burdens such as a subscription fee for a conference call service provided by a network. In the technology described in the publication, each subscriber's terminal makes a relay call and sets a communication path in order without using a conference device, and synthesizes and transmits the downlink voice from the network for conference communication. Do.
[0005]
Japanese Laid-Open Patent Publication No. 06-261198 discloses a non-standard protocol for facsimile communication when a facsimile transmission request occurs when exchanging moving picture information and voice information as in conference communication. A technique is disclosed that determines the communication speed to be used, stops the exchange of moving image information and audio information, and prevents the data transmission time from becoming long.
[0006]
[Problems to be solved by the invention]
In the case of a three-party call or conference call, the demand for image communication (by facsimile, etc.) to confirm the contents of documents and documents during the call is naturally expected. A communication method that satisfies such demands, has high compatibility, and can be implemented simply and inexpensively has not been proposed.
[0007]
For example, in the communication system described in Japanese Patent Application Laid-Open No. 06-253028, a three-party conference can be performed without synthesizing a service by synthesizing voice information or image information. Or, after setting the path to flow image information, there is no disclosure about the means to send different data. For example, if you want to send a facsimile to any party during a three-party call, And have to request disconnection.
[0008]
In Japanese Patent Laid-Open No. 06-261198, it is described that facsimile transmission / reception is performed without disconnecting the call connection during connection of a three-party (conference) call. There is a problem that the configuration becomes complicated and expensive, and since the non-standard protocol is used, the function cannot be used except by the same system.
[0009]
  The subject of the present invention isCommunication with multiple communication partnersWith easy operation inside,Data communicationIt is to be able to do it.
[0010]
[Means for Solving the Problems]
  In order to solve the above problems, in the present invention,A communication means for communicating with a plurality of communication partners, a data detection means for detecting data to be transmitted, and a display means for displaying information for identifying a line used for communication with each communication partner of the plurality of communication partners; A line selection means for a user to select a line for data transmission based on the information displayed on the display means, a designation means for designating a communication partner, and a plurality of communication partners by the communication means. When data to be transmitted is detected by the data detection means during communication, the communication selection means is selected by the line selection means unless a communication counterpart other than the communication counterpart communicating by the communication means is specified by the specification means. When data is transmitted to a communicating party using a line and a communicating party other than the communicating party being communicated by the communicating unit is designated by the designating unit, the line selection is performed. It disconnects the communication with the communication partner using the line selected by the stage, and a transmission means for transmitting the data communication to the designated communication partner using a vacant channelAdopted the configuration.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings. Below, the system using the network by ISDN and PHS / PIAFS is illustrated.
[0017]
[First Embodiment]
(System configuration)
A system configuration diagram of a communication system according to the present invention is shown in FIG. This communication system mainly includes a control station 103, a radio telephone 104, and a radio terminal station 107.
[0018]
The control station 103 accommodates a public network (ISDN) 102 and provides a public network communication service and a G3 facsimile communication function in the system. The configuration of the control station 103 will be described in detail later with reference to FIG.
[0019]
The wireless telephone 104 wirelessly exchanges control data or voice data with the control station 103, performs a voice call through the public network 102, and performs a so-called extension call between a plurality of terminal stations.
[0020]
The wireless terminal station 107 includes a wireless adapter 105 and a data terminal or peripheral device 106. The wireless adapter 105 performs control data communication and data communication with the control station 103. The data terminal or peripheral device 106 is connected to the wireless adapter 105 and performs data transmission / reception via the wireless adapter 105.
[0021]
The partner terminals 100, 101, and 108 that transmit and receive data such as voice information or image information are connected via the public network 102.
[0022]
Among the above, the data terminal or peripheral device 106 refers to a terminal device (data terminal) having a function of transmitting and receiving data in bursts or a device capable of connecting the data input / output device and the wireless adapter 105 that performs wireless communication. For example, in addition to computers, multimedia terminals, printers, facsimiles, copiers, and LAN gateways, devices such as electronic cameras, video cameras, and scanners are applicable.
[0023]
Hereinafter, the detailed configuration and operation of each component described above will be described.
[0024]
(1) Control station
FIG. 2 shows an internal configuration of the control station (network control terminal) 103 in FIG.
[0025]
In FIG. 2, reference numeral 201 denotes a main control unit which controls the entire control station 103 and has a timer timing means for managing communication and managing each wireless terminal station.
[0026]
Reference numeral 202 denotes a ROM which stores a control program according to the present invention. The ROM 202 corresponds to the storage medium of the present invention.
[0027]
Reference numeral 203 denotes a RAM for storing a control work area such as storing terminal type information and communication status by processing of the main control unit 201, storing data received during facsimile communication, and storing original data read during transmission. Image memory for this purpose. In this embodiment, the RAM 203 is described as one block, but it is naturally conceivable to have a work RAM, an image RAM, and a plurality of memory blocks.
[0028]
Reference numeral 204 denotes a digital line interface unit, which is a 64 Kbps 2B channel from the public network (ISDN) 102, that is, two B channels (hereinafter referred to as B1 channel and B2 channel) and 16 Kbps D channel “2B + D”. It includes a DSU (Digital Service Unit) for receiving data. The digital line interface unit 204 receives a serial signal such as an AMI signal, extracts the data portion in the frame, and outputs the data as a PCM signal and control data to the digital switch unit 205 and the main control unit 201 at a predetermined timing. At the same time, the PCM signal from the digital switch unit 205 and the control data from the main control unit 201 are configured into predetermined frames and transmitted to the public network 102.
[0029]
In addition, the digital line interface unit 204 uses the D channel for communication of control data called call control in communication with the counterpart terminal via the main control unit 201 by the LAPD (Link Access Procedure on the Channel) protocol. Audio data and image data are transmitted / received using the B channel according to the protocol of LAPB (Link Access Procedure on the Bchannel).
[0030]
Also, the digital line interface unit 204 has an HDLC (High-level Data Link Control) control procedure inside, and assembles the B channel into a predetermined frame via the ISDN network, at a communication speed of 64 Kbps or at the same time, Using the B channel, unrestricted digital data communication can be performed at a communication speed of 128 Kbps.
[0031]
Reference numeral 205 denotes a digital switch unit that switches between a PCM signal between the wireless communication processing unit 206 and a serial signal between the serial communication control unit 221, and transmits the serial signal to the B1 channel or the B2 channel via the digital line interface unit 204. Used to send and receive serial data.
[0032]
Reference numeral 206 denotes a wireless communication processing unit, which is configured using a device generally called a channel codec or a baseband IC. The wireless information processing unit 206 performs processing such as scrambling on the ADPCM encoded information, and controls time division multiplexing to a predetermined frame, switching of transmission / reception of an RF unit 207 (to be described later), frequency switching, and the like. It also has functions for intermittent reception processing, carrier detection, level detection, and bit synchronization.
[0033]
In the wireless communication processing unit 206, data assembled into a wireless frame and modulated by the modulation unit is transmitted to the target wireless terminal (104 or 107 in FIG. 1) via the RF unit 207. Also, it has a PCM interface unit inside, and performs a CODER-DECODER process between an analog signal and a PCM signal. The wireless communication processing unit 206 can perform 32 Kbps or 64 Kbps data communication from an ISDN network or an extension telephone by a PIAFS protocol for enabling wireless data communication. Details of the wireless communication processing unit 206 will be described later with reference to FIG.
[0034]
Reference numeral 207 denotes an RF unit, which converts an RF (high frequency) signal modulated by transmission data input from the wireless communication processing unit 206 into a form that can be wirelessly transmitted and sends the signal to the antenna, and also from a signal received wirelessly from the antenna. The modulated data is demodulated and output to the wireless communication processing unit 206.
[0035]
Reference numeral 208 denotes an analog switch unit that mainly switches the path of the audio signal. That is, the analog switch unit 208 performs input / output switching to the wireless communication processing unit 206 of signals from the modem unit 212 and input / output signals of analog units such as the sound source unit 209, handset 210, and speaker 211 under the control of the main control unit 201. Do.
[0036]
Reference numeral 209 denotes a sound source for outputting a call progress tone such as a holding tone or DT (dial tone), BT (busy tone), RBT (ringback tone).
[0037]
Reference numeral 210 is a telephone handset for inputting and outputting voice.
[0038]
Reference numeral 211 denotes a speaker which outputs a ring tone and stored voice data and monitors during FAX communication. The modem unit 212 is for performing facsimile transmission / reception based on the G3 standard. A key input unit 213 inputs dial numbers and the like, dial keys such as 0 to 9 and *, #, transmission, control keys for facsimile transmission / reception, off-hook keys for controlling line ON / OFF, other hold keys and functions It consists of keys such as a select key for setting.
[0039]
Reference numeral 214 denotes a display unit which displays a time, a line during communication, and an error display, and is mainly composed of a liquid crystal or the like.
[0040]
Reference numeral 215 denotes a hook detection unit, which particularly detects ON / OFF of the handset and controls line ON / OFF.
[0041]
Reference numeral 216 denotes a recording unit composed of a recording mechanism based on a known recording method such as a thermal type, thermal transfer type printer, laser beam printer, or ink jet printer, and is mainly used for recording output of a facsimile image. Therefore, the recording unit 216 has a function of decoding MH, MR, or MMR-encoded digital data, and can record and output the decoded data.
[0042]
Reference numeral 217 denotes a reading unit configured by known document reading means such as a CCD or a contact sensor array and a document transport system, and converts analog data read from the document into digital data. The reading unit 217 is mainly used for reading a facsimile image. Therefore, image data read by an encoding method such as MH, MR, or MMR can be encoded and output.
[0043]
Reference numeral 218 denotes a document detection unit that detects the presence or absence of a transmission document on the reading unit 216 and notifies the main control unit 201 of the result.
[0044]
A block indicated by reference numeral 220 (inside the broken line) constitutes a means for facsimile image input / output and a user interface, and is considered to be constituted as one unit having an operation panel.
[0045]
Reference numeral 219 denotes an address and data bus which is used by the main control unit 201 to control each unit.
[0046]
Reference numeral 221 denotes a serial communication control unit, which controls serial communication such as HDLC.
[0047]
Reference numerals 222 to 228 indicate audio signals input and output by the analog switch unit 208. Reference numeral 222 is a holding tone output from the sound source unit 209, 223 is a call progress tone such as DT, BT, and RBT output from the sound source unit 209, 224 is a first analog signal output from the wireless communication processing unit 206, and A first analog signal input to the wireless communication processing unit 206 is shown.
[0048]
Reference numeral 225 denotes a second analog signal output from the wireless communication processing unit 206 and a second analog signal input to the wireless communication processing unit 206. Reference numeral 226 denotes an analog signal output from the handset 210 and input to the handset 210. The analog signal 227 is an analog signal output to the speaker 211, and 228 is an analog signal output from the modem unit 212 and an analog signal input to the modem unit 212.
[0049]
(Explanation of configuration and operation of wireless communication processor)
FIG. 3 shows the configuration of the wireless communication processing unit 206 of the control station 103 in FIG. Hereinafter, an outline of the configuration and operation of the wireless communication processing unit 206 will be described. The wireless communication processing unit 206 includes the following units.
[0050]
The modulation unit 301 modulates input data assembled into a frame and outputs the modulated data to the RF unit 207. The demodulator 302 demodulates the modulated data output from the RF unit 207 and converts it into a digital signal.
[0051]
The frame assembling unit 303 configures data set in various buffers, which will be described later, into predetermined frames defined in the RCR-28 standard. The frame decomposing unit 304 decomposes the frame-structured digital data output from the demodulating unit 302 and extracts the data.
[0052]
The A / D converter 305 receives the RSSI signal from the RF and performs analog / digital conversion. The level detection unit 306 compares the digital signal from the A / D converter 305 with a predetermined level. The synth control unit 307 outputs data for setting a PLL provided in the RF unit 207.
[0053]
The main control unit I / F unit 308 accommodates a bus 219 connected to the main control unit 201 and writes / reads control data to / from the main control unit 201.
[0054]
The transmission buffer 309 is a buffer that temporarily stores data to be transmitted every 5 ms when transmitting data, and the reception buffer 310 is a buffer that temporarily stores data decomposed by the frame decomposing unit. is there.
[0055]
The ADPCM interface 311 temporarily stores the audio data in order to compose the audio data compressed to 32 Kbps by the ADPCM codec described later into a predetermined frame, and temporarily stores the audio data for 5 ms decomposed by the frame decomposing unit 30. Remember me. The sound source unit 312 digitally stores PB signals, signals such as BT and DT, and ringtones.
[0056]
The PCM codec 313 A / D converts the input analog signal into a 64 Kbps PCM signal, then sends it to the data transcoder / selector 314, and A / D converts the 64 Kbps digital signal from the data transcoder / selector 314. At least two systems have the function of outputting analog signals to the analog switch unit 208.
[0057]
The data transcoder / selector 314 inputs / outputs ADPCM data input / output signals to / from the ADPCM interface 311 from the PCM codec 313 by ADPCM conversion of PCM data, or ADPCM converts the PCM data from the PCM interface 316 to input / output And has two systems for transcoding 32 Kbps ADPCM data and 64 Kbps data.
[0058]
The data transcoder / selector 314 further selects an output destination of data input / output to / from the data input / output unit 318 and connects the PCM codec 313 and the PCM interface 316 as a PCM signal of 64 Kbps through. Also select the path to do.
[0059]
The analog I / F 315 controls the level of the analog input / output signals 224 and 225 between the PCM codec 313 and the analog switch unit 208.
[0060]
The PCM interface 316 converts the signal of the PCM signal and inputs / outputs data between the digital switch unit 205 and the data transcoder / selector 314 at a data transmission rate of 64 Kbps, and transmits the PCM signal to the public network 102. Synchronize.
[0061]
The burst data I / F 317 temporarily stores the burst data signal decomposed by the frame decomposing unit 304, outputs the burst data signal to the data input / output unit 318 as a 32 Kbps serial signal, and is input from the data output unit 318 at 32 Kbps. Digital data is temporarily stored for a predetermined number of frames.
[0062]
The data input / output unit 318 performs processing for switching data input / output at 32 Kbps between ADPCM data and burst data.
[0063]
When the incoming call from the public network 102 indicates the PIAFS mode of unrestricted digital communication, the PIAFS control unit 320 receives the data input / output unit 318 of the wireless communication processing unit 206 via the digital line interface 204 and the digital switch unit 205. Connected to. In the case of PIAFS communication, the data input / output unit 318 connects a communication path to the PIAFS control unit 320, detects a predetermined frame in the data received by the PIAFS control unit 320, and performs data communication by extracting the data.
[0064]
FIG. 4 shows the configuration of the analog switch unit 208 of FIGS. 2 and 3. The analog switch unit 208 includes a switch control unit 431. The switch control unit 431 performs path control of the analog signals 222 to 228 shown in FIGS. 2 and 3 based on the control of the main control unit 201.
[0065]
The switch control unit 431 turns on / off the switches 401 to 430 and performs analog signal path control. At this time, by turning on the switches 401 to 430 at the intersections of the illustrated switch matrix, the analog signals 222 to 430 are turned on. 228 path control is performed. For example, to connect the analog output 1 (224) from the wireless communication processing unit 206 to the analog input 228 to the modem 212, the switch 415 is turned on.
[0066]
FIG. 5 shows an appearance when the display unit 214 and the key input unit 213 in this system are configured as operation panels.
[0067]
In FIG. 5, reference numeral 501 is a function key for starting various function settings, 502 is a display panel for displaying the line usage status and function setting, 503 is a hold key for holding the line, and 504 is a facsimile. 505 is a reception key for prompting reception of a facsimile, 506 is a select key for changing the function setting mode, 507 is a set key for setting the selected mode, and 508 is for inputting dial information. It is a numeric keypad to do.
[0068]
Among the above, the display panel 502 is used for displaying and selecting a line during three-party communication according to the present invention.
[0069]
The operation in the above configuration will be described in detail below. FIG. 6 shows an outline of control when a three-party call is performed using this system.
[0070]
In this embodiment, for convenience, the communication channel used for the first communication is the B1 channel of ISDN, and the communication channel used for the second communication is the B2 channel.
[0071]
When the main control unit 201 receives the off-hook information of the handset 210 from the detection unit 215, the main control unit 201 determines that there is a first call (step S101), determines a line channel to be used (in this embodiment, uses the B1 channel), Further, the analog switch 208 (FIG. 4) is controlled, the switch 409 is turned on, and a 400 Hz dial tone is output to the handset 210.
[0072]
Further, after the step S101, when a dial number is input from the numeric keypad 508, the dial number is displayed on the display panel 502, and the digital line I / F 204 is controlled to make a call using the dial number input from the numeric keypad. Perform call processing. After the call processing, when there is a response from the counterpart terminal 100 (FIG. 1), the main control unit 201 connects the digital call path between the digital switch unit 205 and the wireless communication processing unit 206, and The analog signals 224 and 226 are input / output via the analog switch unit 208 using the analog signal 224 (step S102).
[0073]
Details of the operation during a call will be described with reference to FIGS. The main control unit 201 inputs the data signal from the digital switch unit 205 to the PCM interface 316, and further controls the data transcoder / selector 314 to be connected to the PCM codec 313 through PCM through. The PCM codec 313 performs D / A conversion on the received PCM data conversion, and outputs it to the analog switch unit 208.
[0074]
The analog signal 224 from the analog switch unit 208 is A / D converted into 64 Kbps PCM data by the PCM codec 313, and sent from the PCM interface 316 to the digital switch unit 205 via the data transcoder / selector 314.
[0075]
The main control unit 201 also controls the analog switch unit 208 to turn off tone transmission (switch 409 is turned off), and the first analog signal 224 from the wireless communication processing unit 206 is sent to the analog input 226 of the handset 210. Connect (switch 414 is ON). Further, the analog signal 226 from the handset 210 is connected to the first analog input 224 of the wireless communication processing unit 206 (the switch 422 is turned on).
[0076]
In this way, the handset 210, the analog switch unit 208, the wireless communication processing unit 206, the digital switch unit 205, the digital line I / F 204, and the public network 102 are connected, and the first call is established.
[0077]
When performing a three-way call during the first call, first the function key 501 (FIG. 5) is pressed. At this time, a three-party call is selected from an appropriate menu displayed on the display panel 502 by using the select key 506, and a set key 507 is pressed to start a three-party call start process (step S103).
[0078]
When the three-party call start processing is started, as shown in FIG. 5, the main control unit 201 causes the display panel 502 to display lines (each ISDN 2) such as “line 1:” and “line 2:”. (Corresponding to one B channel) is displayed, and a cursor is displayed on the vacant line (line 2 in this embodiment) to prompt the user to input a dial number. Further, the analog switches 414 and 422 are turned off, and the switch 402 is turned on to send a hold sound to the first call partner 100. Also, the switch 409 is turned on, and DT (dial tone) is output to the handset 210. Then, the hold key 503 or the display panel 502 notifies that it is on hold (step S104).
[0079]
Thereafter, in the same manner as described above, when the dial number input and call processing using the B2 channel are performed and there is a response from the counterpart terminal 101, the main control unit 201 determines the second PCM codec of the radio communication processing unit 206. 313, the data transcoder / selector 314, the analog I / F 315, and the PCM interface 316 are controlled.
[0080]
Further, the analog switch 208 is controlled, the tone signal 223 from the sound source unit 209 is stopped, and the second analog signal 225 from the wireless communication processing unit 206 is connected to the analog input 226 of the handset 210 (switch 409 is turned OFF, Switch 419 is turned ON). Further, the analog signal 226 from the handset 210 is connected to the second analog input 225 of the wireless communication processing unit 206 (switch 423 is turned on). The second call is established by such processing. After the second call is established, when the main control unit 201 detects that the hold key 503 is pressed (step S105), the switch 402 is turned off, and the analog switches 414 and 422 and the switches 413 and 417 are turned on again, whereby the handset 210 is turned on. Can be used to make a three-way call with the counterpart terminals 100 and 101 (step S106).
[0081]
In the present embodiment, the two calls are made from the control station 103. However, even when the incoming call is changed to the three-way call, the same operation and connection process as described above may be performed.
[0082]
Further, FIG. 7 illustrates control when a facsimile is transmitted to the partner terminal 100 (B1 channel) during a three-party call. That is, another communication, in this case, facsimile transmission, is performed to the other party without a non-standard protocol.
[0083]
In FIG. 7, if there is a vacancy in the two B channels used for the three-party call, it is used, but if there is no vacancy, the user selects a line for facsimile transmission and uses that line to use the channel. The facsimile transmission is started (to the other party connected by the line (channel)).
[0084]
That is, the main control unit 201 monitors the state of the system during the three-party call (step S201), and the three-party call is terminated by the on-hook signal of the handset 210 from the hook detection unit 215 or the disconnection terminal 100, 101 being disconnected. If it is detected (step S202), the digital line I / F 204 is controlled to exchange commands such as disconnection and release, and communication using the public network 102 is terminated (step S213). When disconnection from the system side or the counterpart terminals 100 and 101 is not detected (step S202), the output of the document detection unit 218 is checked to determine whether or not a detection signal indicating that there is a transmission document is output ( Step S203).
[0085]
When main controller 201 receives a signal indicating that a document to be transmitted for data transmission is set from document detector 218 during a three-party call, line selection information is input from key input unit 213.
[0086]
At this time, when a document is set, the main control unit 201 displays a cursor together with “Line 1:” or “Line 2:” on the display unit 214 (display panel 502), so that a dial number can be input. And Also, the user selects whether to input a dial number to “Line 1:” or “Line 2:” by pressing the select key 506 or the down arrow key (step S204).
[0087]
Here, the user can send a facsimile to a partner unrelated to the three-way call by inputting a new number.
[0088]
Further, by pressing the select key 506 without inputting a new number (step S214 described later), the same party that is talking using one of the lines is selected, and a facsimile is transmitted to that party. In this case, the line is not released and G3 facsimile communication is performed using the established voice communication channel.
[0089]
That is, after step S204, if no dial number is input from the numeric keypad 508 of the key input unit 214 (step S205), it is detected whether the select key 506 is pressed while the line is selected with the cursor (step S205). Step S214). If the select key 506 is not pressed, the line monitoring process is continued (step S201).
[0090]
When the select key 506 is pressed in step S214, the main control unit 201 determines that the line designated by the cursor on the display panel 502 is a line to be used for facsimile transmission, and controls the analog switch unit 208 (step S215). ). That is, the switch 427 is turned on to connect the analog output 228 from the modem unit 212 that transmits the facsimile signal to the analog input 224 of the wireless communication processing unit 206. Further, the switch 415 is turned on to connect the analog output 224 from the wireless communication processing unit 206 to the analog input 228 of the modem unit 212 that receives the facsimile signal. However, the three-way call by the handset 210 is held until this time.
[0091]
After step S215, when the main control unit 201 detects that the facsimile transmission key 504 of the key input unit 213 is pressed (step S216), the analog switch 208 is controlled to end the three-party call and use one of the 2B channels. Performs facsimile communication. At this time, in the control of the analog switch 208, the path of the analog input / output 228 between the analog input / output 225 of the wireless communication processing unit 206 and the modem unit 212 is disconnected so that the sound of the modem signal does not enter the call on the B2 channel. . Specifically, the switches 413, 414, 417, and 422 are turned off. At this time, step S411 may be turned on to monitor the modem signal, and the modem signal may be sent to the speaker 211. After such switch control, facsimile transmission / reception with the counterpart terminal 100 is performed. That is, the document data read by the reading unit 217 is encoded, modulated by the modem unit 212, and transmitted by the analog facsimile procedure of the T30 protocol (step S217).
[0092]
At this time, the other party shifts to facsimile reception by performing the control of FIG. 8 to be described later, or when a terminal such as a facsimile integrated analog telephone is connected to an analog interface such as TA. Facsimile reception can also be performed by switching to the facsimile mode.
[0093]
On the other hand, when a transmission original is detected and a line to be used is selected and a new dial number is input from the numeric keypad 508 of the key input unit 214 (step S205), the main control unit 201 performs digital line I / O. The F204 is controlled to disconnect the selected line and release the channel. Here, in the control of the analog switch unit 208, the input / output 224 to the wireless communication processing unit 206 and the input / output 226 to the handset are turned off. Specifically, the switches 413, 414, 417, and 422 are turned off (step S206). If the input of a new dial number from the numeric keypad 508 is completed (step S207), it is detected whether the facsimile transmission key 504 is pressed (step S208).
[0094]
When the facsimile transmission key 508 is pressed here, the main control unit 201 controls the document reading unit 217 to read the transmitted document. When the reading is completed, the digital line I / F 204 is controlled based on the entered dial number, and a call is made to the other terminal 108 (FIG. 1) using the T30 protocol (step S209). When the response from the other terminal 108 is confirmed after the call is made, the digital line I / F 204 is controlled to connect the channel, the analog switch 208 is controlled, and the analog input / output signal 228 from the modem unit 212 is wirelessly communicated. The analog input / output 224 of the processing unit 206 is connected. Specifically, the switches 415 and 427 are turned on. As a result, the terminal is connected in an analog manner, and facsimile communication using the T30 protocol is started by the modem unit 212 (step S209).
[0095]
With the above processing, when it is determined in step S211 that communication by the modem unit 212 is started and communication is possible using a training signal or the like, facsimile communication and voice call using the 2B channel are continued (step S212).
[0096]
In the above, an example in which facsimile communication is started during a three-party call has been shown, but it goes without saying that data communication other than facsimile can be performed if the modem performs other types of data communication.
[0097]
As described above, data communication can be started during a three-party call, and a non-standard protocol is not used. Therefore, the communication can be performed easily and inexpensively, and compatibility between devices is not impaired.
[0098]
The operation when a facsimile is received from the partner terminal 100 (communication using the B1 channel) during a three-party call will be described below using the flowchart of FIG. With the procedure of FIG. 8, it is possible to receive the facsimile transmission started by the procedure of FIG.
[0099]
In FIG. 8, the main control unit 201 monitors the state of the system during a three-party call (step S301), and detects on-hook detection of the handset 210 or the partner terminal 100 or 101 (see FIG. 5) based on a detection signal from the hook detection unit 215. When it is detected that the three-party call has been terminated by disconnecting 1) (step S302), the digital line I / F 204 is controlled to exchange commands such as disconnection and release, and communication using the public network 102 is terminated ( Step S310).
[0100]
On the other hand, when disconnection from the system or the counterpart terminal 100, 101 is not detected (step S302), it is detected whether there is facsimile transmission from the counterpart terminal 100, 101 during a three-party call. This detection process combines the analog output 1 (224) and the analog output 2 (225) from the wireless communication processing unit 206 during a three-party call, and always inputs a signal to the analog input 228 to the modem unit 212. To do. Specifically, the switches 415 and 420 are turned on in addition to the switches for the three-party call.
[0101]
If a signal indicating that the modem signal has been received is output from the modem unit 212 (step S303), it is not known whether analog output 1 or 2 of the wireless communication processing unit 206 is facsimile transmission. In step S <b> 304, the main control unit 201 controls the analog switch 208 so that only the analog output 1 (224) is connected to the modem unit 212. (Switch 420 is turned OFF). If the modem signal from the partner terminal is received as a result of the processing, processing for performing facsimile reception using the B1 channel is performed. If the modem signal is not received as a result of the process in step S303, the analog output 2 (225) is connected to the analog input (228) to the modem unit 212 (switch 415 is turned OFF and switch 420 is turned ON. To do). If the modem signal from the partner terminal can be received, processing for performing facsimile reception using the B2 channel is performed.
[0102]
When the selection of the line for facsimile transmission is completed as described above (step S305) and the main control unit 201 detects that a facsimile modem signal has been received from the B1 channel (step S306), it enters the modem unit 212. The output signal 228 is disconnected from the analog input / output 2 (225) of the wireless communication processing unit 206, and processing for receiving transmission data from the partner facsimile is started (step S307). At this time, the analog switch 208 turns off the switches 413, 414, 417, and 422. Thereafter, incoming call processing using the T30 protocol is performed with the counterpart terminal 100, and when it is determined that communication is possible by matching the communication speed (step S308), facsimile communication using the B1 channel and B2 channel are used. Communication using 2B of the voice call is performed (step S309).
[0103]
It goes without saying that the facsimile reception shown in FIG. 8 can be replaced with other data communication using a modem.
[0104]
As described above, when a modem signal is detected from one of the B channels during a three-party call (step S303), the process can automatically shift to data communication (facsimile reception).
[0105]
That is, according to the present embodiment, when a three-party call is performed using the ISDN 2B channel, data transmission / reception using a standard protocol such as the T30 facsimile protocol is performed without terminating the three-party call. It is possible to make a three-way call simply and inexpensively, and by simple operation during the call, data communication such as facsimile communication can be performed easily and inexpensively with high compatibility.
[0106]
Further, since the line selection procedure is automatically started when a document to be transmitted by facsimile is detected, there is an advantage that the user's operation becomes very easy.
[0107]
In addition, when dial information is input by key operation after a line is selected, the selected line is disconnected and data communication is performed using an available line, so a three-way call is performed. Data communication such as facsimile can be easily performed with other parties.
[0108]
In addition, since the modem signal for data communication is detected to shift to reception, data communication such as facsimile can be performed without connecting the line again.
[0109]
[Second Embodiment]
In the above embodiment, the facsimile reception is described as being automatically performed. However, the facsimile reception can be manually performed.
[0110]
In the flowchart of FIG. 8, when receiving manually during a three-party call, if the user determines that facsimile transmission is performed from the partner terminal 100 based on the content of the call heard from the handset 210 during the call (step S303). ) Using the select key 506, the cursor on the display panel 502 is moved, and the cursor is set on the line 1 (step S304), so that the branch to the facsimile reception is manually performed.
[0111]
When the user selects the line 1 by pressing the set key 507, the main control unit 201 recognizes that processing using the line 1 is performed (step S305), and then the user transmits a facsimile from the partner terminal 100 using the handset 210. When the signal is recognized and the reception key 505 of the key input unit 213 is pressed, the main control unit 201 performs reception processing using the T30 protocol using the line 1. At this time, the analog switch 208 controls the switches 413, 414, 417, and 422 to be OFF when the reception key 505 is pressed, so that the modem voice signal is not output to the handset during facsimile communication.
[0112]
As described above, the user can shift from three-party call to data communication (facsimile reception) manually by performing manual line selection operation while visually recognizing the line display. In this case, the facsimile reception can be replaced with another data communication using a modem.
[0113]
In the above description, a communication apparatus incorporating a facsimile function and an extension system exchange function based on PHS / PIAFS has been shown as the configuration of the control station. However, it goes without saying that the present invention can be implemented regardless of the configuration of the device. That is, the present invention can be implemented as long as it is a communication device that performs a three-party call using the ISDN 2B channel and has a data communication function other than the call. For example, the present invention can also be implemented in a configuration in which an ISDN communication card is attached to a general-purpose terminal such as a personal computer, and telephone conversation and facsimile communication are performed under software control.
[0114]
The control program of the present invention can be stored and supplied not only in the ROM 202 but also in any computer-readable recording medium such as a hard disk, floppy disk, optical disk, magneto-optical disk or memory card.
[0115]
  more thanAs described, a communication device that accommodates a digital public line interface such as ISDN (Integrated Services Digital Network) and has at least one extension telephone function and data communication function, its control method, and its control program are stored. In a computer-readable storage medium, a first communication control for connecting the B channel and making a first communication at the time of outgoing or incoming call, and a second communication control for making a second communication by connecting the B channel at the time of outgoing or incoming call And performing a three-party call using the first and second communications, detecting the presence or absence of data to be transmitted during the three-party call, and connecting the first and second communication lines. In addition to displaying information, the line for transmitting data is selected based on the information displayed in the display step, and the line is selected in the line selection step. Since a configuration is employed in which data is transmitted over a line that has been used, when a three-party call is performed using the 2B channel, a standard such as a T30 facsimile protocol can be established with the other party without terminating the three-party call. The data transmission / reception using the above protocol can be performed, and there is an excellent effect that data communication such as facsimile communication can be performed easily and inexpensively with high compatibility by an easy operation during a three-party call. Further, since non-standard protocols and hardware are not used, it can be implemented simply and inexpensively, and three-way communication and data communication can be performed with various partner terminals without impairing compatibility.
[0116]
Alternatively, according to the configuration in which the data communication is facsimile communication using an analog modem signal and the data to be transmitted / received is facsimile image data, it is possible to perform a three-party call and to achieve high compatibility by an easy operation during the call. The facsimile communication can be performed easily and inexpensively.
[0117]
Alternatively, according to the configuration in which the line selection is performed when a document to be transmitted by facsimile is detected, there is an advantage that the user's operation becomes extremely easy.
[0118]
Alternatively, when dial information is input from the key input means for inputting dial information after the line is selected by the line selection, the line selected by the line selection is disconnected, and data communication is performed using the free line. Therefore, it is possible to easily perform data communication such as facsimile with a party other than the party that is carrying out a three-way call, and further improve the operability of the apparatus.
[0119]
Or a first communication control for performing a first communication by connecting the B channel at the time of outgoing or incoming call; and
The second communication control for performing the second communication by connecting the B channel at the time of outgoing or incoming call is performed,
Making a three-way call using the first and second communications;
Detecting modem signals of the first communication and the second communication;
Select a line to receive data based on the detection result of the modem signal,
By adopting a configuration to receive data from the selected line, it is possible to detect data transmission modem signals during a three-party call and shift to reception with simple operation, with low cost and high compatibility. There is an excellent effect that data communication such as facsimile can be performed without connecting the line again.
[0120]
  Alternatively, the first communication control for performing the first communication by connecting the B channel at the time of outgoing or incoming call and the second communication control for performing the second communication by connecting the B channel at the time of outgoing or incoming call are performed. And the third communication is performed using the second communication, the line information of the first communication and the second communication is displayed, the line for receiving data is selected based on the displayed information, and the selected line is selected. By adopting a configuration for receiving data from a line, it is easy to operate, simple, inexpensive, and highly compatible. There is an excellent effect that it is possible to manually shift to data reception from a three-party call.
【The invention's effect】
  As described above, according to the present invention, data communication can be performed by an easy operation during communication with a plurality of communication partners. That is, when data to be transmitted is detected during communication with a plurality of communication partners, if a communication partner other than the communication partner in communication is not designated, the communication being performed using the line selected by the user When data is sent to the other party and a communication partner other than the communicating partner is specified, the communication with the communication partner using the line selected by the user is disconnected, and the specified communication is performed using an available line. Since data communication is transmitted to the other party, even when communicating with a plurality of communication partners, data can be transmitted to any partner in communication, a new partner, and any communication partner.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a communication system employing the present invention.
2 is a block diagram showing an internal configuration of the control station in FIG. 1. FIG.
3 is a block diagram illustrating an internal configuration of a wireless communication processing unit in FIG. 2;
4 is a block diagram showing the internal configuration of the analog switch unit of FIGS. 2 and 3. FIG.
5 is an explanatory diagram showing a configuration example of a display unit and a key input / output unit in FIG. 2. FIG.
FIG. 6 is a flowchart showing a three-party call control procedure.
FIG. 7 is a flowchart showing a control procedure when facsimile transmission is performed to a partner terminal during a three-party call.
FIG. 8 is a flowchart showing a control procedure when receiving a facsimile during a three-party call.
[Explanation of symbols]
103 control station
104 wireless telephone
106 Data terminal or peripheral device
107 wireless terminal stations
201 Main control unit
202 ROM
203 RAM
204 Digital line interface
205 Digital switch
206 Wireless communication processing unit
207 RF section
208 Analog switch
209 Sound generator
210 Handset
212 Modem part
213 Key input part
214 Display
215 hook detector
216 Recording unit
217 Reading unit
218 Document detection unit
219 Bus
222 Music on hold
223 Cole Progress Stone
224 Analog I / O 1
225 Analog I / O 2
226 Analog I / O to handset
227 Analog signal to speaker
228 Analog I / O to modem

Claims (6)

A communication device,
A communication means for communicating with a plurality of communication partners;
Data detection means for detecting data to be transmitted;
Display means for displaying information for identifying a line used for communication with each communication partner of a plurality of communication partners;
A line selection means for a user to select a line for data transmission based on the information displayed on the display means ;
A designation means for designating a communication partner;
If the communication means detects data to be transmitted by the data detection means during communication with a plurality of communication partners, the communication means does not designate a communication partner other than the communication partner in communication by the specification means. When the communication means other than the communication partner in communication is designated by the communication means by using the line selected by the line selection means, and the communication means other than the communication partner in communication is designated by the designation means, the line A transmission unit that disconnects communication with a communication partner using the line selected by the selection unit and transmits data communication to the designated communication partner using a free line;
Communication apparatus characterized by having a.   The communication apparatus according to claim 1, wherein the data transmission is facsimile transmission.   The communication apparatus according to claim 1, wherein the data detection unit detects a transmission document.   On the basis of detection of the data to be transmitted by the data detection means, the display means displays information for identifying a line used for communication with each communication partner of a plurality of communication partners. The communication apparatus according to claim 1. A communication device control method comprising:
A data detection process for detecting data to be transmitted;
A display step of displaying information for identifying a line used for communication with each communication partner of a plurality of communication partners;
A line selection step for a user to select a line for data transmission based on the information displayed in the display step ;
A designation process for designating a communication partner;
When data to be transmitted is detected in the data detection step during communication with a plurality of communication partners, if a communication partner other than the communication partner in communication is not designated in the designation step, it is selected in the line selection step. Data is transmitted to the communication partner in communication using the selected line, and when a communication partner other than the communication partner in communication is designated in the designation step, the line selected in the line selection step is used. A transmission step of disconnecting communication with a communication partner and transmitting data communication to the designated communication partner using an available line;
A method for controlling a communication apparatus, comprising: A computer-readable storage medium storing a control program for a communication device,
A data detection process for detecting the presence or absence of data to be transmitted;
A display step of displaying information for identifying a line used for communication with each communication partner of a plurality of communication partners;
A line selection step for a user to select a line for data transmission based on the information displayed in the display step ;
A designation process for designating a communication partner;
When data to be transmitted is detected in the data detection step during communication with a plurality of communication partners, if a communication partner other than the communication partner in communication is not designated in the designation step, it is selected in the line selection step. Data is transmitted to the communication partner in communication using the selected line, and when a communication partner other than the communication partner in communication is designated in the designation step, the line selected in the line selection step is used. A transmission step of disconnecting communication with a communication partner and transmitting data communication to the designated communication partner using an available line;
Computer-readable storage medium storing a control program of the communication device characterized by having a.

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