JP3519063B2 - Control method for ISDN terminal device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ISDN transmission line.
And at least Group 3 fax
Millimeter transmission function and manual facsimile transmission function and communication
Control method of ISDN terminal equipment with talk function
You. 2. Description of the Related Art In ISDN, a public telephone line is used.
To transmit data by connecting a group 3 facsimile machine
And the wiring on the subscriber side can be changed to a passive bus type.
Then, the basic subscriber of the same subscriber number (ISDN number)
Interface with different terminal characteristics.
A terminal device can be connected. [0003] ISDN has the same basic interface.
Multiple subscriber numbers can be set for
A subscriber number service is defined and each subscriber
The user can arbitrarily use different types of terminal devices
Can be connected. Thus, the same basic interface is used.
For example, a group 3 facsimile machine and a telephone
They can be connected and used independently. this
In this way, the usage status of the terminal on the subscriber line can be
Can be set arbitrarily.
Very high degree of freedom. [0005] However, conventionally,
The following inconveniences have occurred. [0006] For example, a group 3 facsimile
If you connect a similiar device, perform the call operation manually.
Meeting with the partner terminal operator
Initiating image information transmission by moving operation
Image information can be transmitted by a manual transmission procedure. On the other hand, ISDN has the following problems.
State. [0008] As described above, in ISDN, the same processing is performed.
Multiple types of terminals for the basic interface of the subscriber number
Terminal device can be connected between ISDN and the terminal device.
In the call setup procedure to be performed, the terminal device performs
Is specified. As an example of displaying this terminal function, an example
For example, the "communication capability" information element and the "higher layer consistency"
There are information elements, and these information elements are
Included in the call setup message sent to ISDN
It is. [0010] "Transmission capability" information element is the
Content is audio, unrestricted digital information, restricted digital information
Report, 3.1KHz audio, 7KHz audio,
Or the ability to transfer information indicating whether it is video
It consists of information that expresses power. In addition, "High layer
"Compatibility" information element is used for consistency check with the partner terminal
For example, telephone, group 2 / group
Group 3 facsimile, Group 4 facsimile, mixed
Mode, teletex, videotex, telex,
Audio visual or message hand
Which end of the terminal functions, such as the dring system,
Displays whether the terminal has the function. Here, consider the manual transmission procedure described above.
In order to make a call using the telephone function first,
The terminal device outputs the audio data in the “communication capability” information element.
Data, and “Higher layer compatibility” information
A call setup message in which data representing the telephone is set in the element
Page to the ISDN to call the other terminal. For this reason, the called party's group 3 fax
If the millimeter does not have a call function,
Cannot respond to the image information, and the image information transmission
The situation that a work cannot be performed arises. [0013] In addition, a group 3
If a telephone device is connected other than the
Call is set to the phone function as a terminal function
It is the telephone device that responds, and
The inconvenience that the call cannot be connected to the x-millimeter device occurs. By the way, ISDN is a public telephone line network.
Network connection function. Therefore, ISDN
Connected telephone or group 3 facsimile machine
And telephone equipment or glue connected to the public telephone network.
Data transmission with the facsimile machine.
You. On the other hand, depending on the ISDN, a public telephone line
In the inter-network connection function with the network, the "communication capability"
The setting may be limited to "audio". [0016] Such an ISDN is transmitted between a calling terminal and a called terminal.
If intervening, the calling terminal is the same as a normal call
In the “Transmission capability” information element, “3.1 kHz audio
If "O" is set, this call is rejected and the desired image
There is a disadvantage that the information transmission operation cannot be performed. The present invention has been made in view of such circumstances.
Therefore, the image information transmission operation by manual transmission procedure
Control method of ISDN terminal device which can be appropriately performed
It is intended to provide. SUMMARY OF THE INVENTION The present invention relates to the transmission of ISDN.
Used as a transmission route and at least three groups
Facsimile transmission function and manual facsimile transmission function and
Control method for ISDN terminal equipment with call and call function
With no original set on the original reading means,
And the handset for calls goes off-hook
And apply the call function, and
The “communication ability” information element contains data representing “voice”.
Information and “High-quality layer consistency” information
Call setup with data representing "telephone" in the element
Sends a message and makes a call.
Handset and the handset for calls
Group 3 facsimile transmission when on-hook
Apply the function and specify the destination
"3.1 KHz audio" is included in the
Set the high quality layer
“Compatibility” information element contains “Group 2 / Group 3 fax”
A call setup message with data representing millimeters
And make a call, and the original is set on the original reading means.
Handset and call handset is off-hook
When the state is reached, apply the manual facsimile transmission function.
In both cases, the "communication capability" information element
Contains data representing “3.1 kHz audio”.
As well as the “high-quality layer consistency” information element.
Stands for "Group 2 / Group 3 facsimile"
Sends a call setup message with data set, and initiates a call
It is intended to be. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, referring to the attached drawings,
An embodiment of the present invention will be described in detail. FIG. 1 shows a glue according to an embodiment of the present invention.
3 shows a F3 facsimile apparatus. This group 3
A facsimile apparatus uses ISDN as a transmission path.
It also has a call function. In FIG. 1, the system control unit 1
Operation control processing of facsimile machine, group 3 facsimile
Perform millimeter transmission procedure processing and call procedure processing
The system memory 2 is stored in the system control unit 1.
Processing program to execute and execute the processing program
To store various data necessary for
The work area of the system control unit 1 is configured. The parameter memory 3 stores the facsimile
For storing various information specific to the device,
SRAM with battery backup (static type
Data can be rewritten such as random access memory
And a functional nonvolatile semiconductor memory device. The scanner 4 converts the original image into three groups.
For reading at the resolution set in the x-ray machine
The plotter 5 converts the image into a group 3 facsimile.
Records and outputs at the resolution set for the millimeter device.
is there. The operation display unit 6 is provided with the facsimile machine.
For operation, various operation keys, and
LCD for displaying guidance information to the operator
It consists of various display devices such as a display. The encoding / decoding section 7 converts the image signal into a predetermined code.
Encoding and compression, and
To decode the image information of the original state into the original image signal.
The image processing unit 8 performs a pixel density conversion process, a scaling process, and the like.
Is performed. The image storage device 9 includes a transmission image signal,
Various information such as transmission image information, reception image information and reception image signal
This is for storing information. The tone generating circuit 10 is used to generate a ring tone or the like.
Various tone signals are generated, and the tone signals are generated.
Are added to the speaker 11. Therefore, toe
Sound corresponding to the tone signal output from the tone generation circuit 10.
The sound signal is output from the speaker 11. [0027] The ISDN interface circuit 12
Physically connected to DN and ISDN Layer 1
Signal processing function and D channel (signal channel) signal
Signal / B-channel (information channel) signal integration / separator
It has the ability. The D-channel transmission control unit 13 has a
Transmission control processing such as call control processing performed with ISDN using
CODEC 14 is an IS
To transmit analog signals using the DN B channel
Performs analog / digital data signal conversion processing.
It is for the purpose. The group 3 facsimile modem 15 is
It is also necessary to realize the loop 3 facsimile modem function.
Therefore, a low-speed model for exchanging transmission procedure signals
Function (V.21 modem), and mainly image information
High-speed modem function (V.29 modem, V.29
27 ter modem). The switching circuit 16 is an analog circuit of the CODEC 14.
Group 3 facsimile modem 15,
Or, hang up on one of the handsets 17
It is for exchange connection. The system control unit 1, the system memory 2, the
Parameter memory 3, scanner 4, plotter 5, operation display
Unit 6, encoding / decoding unit 7, image processing unit 8, image storage device
9, tone generation circuit 10, D channel transmission control unit 13,
CODEC 14, Group 3 facsimile modem 15,
The switching circuit 16 is connected to the system bus 18
Exchange of various information between these elements
Is mainly performed through the system bus 18.
You. In addition, a file indicating the hook state of the handset 17 is shown.
System signal via a system bus 18.
It has been added to the control unit 1. FIG. 2 shows a terminal device connected to the ISDN.
Call control in circuit-switched mode with the ISDN
An example of the procedure is shown. That is, the calling terminal first sets the transfer mode
To set the circuit switching mode and
Sends the call setup message SETUP specified to ISDN
Request to set up a call with the called terminal, and the ISDN shall
Sends a call setup message SETUP to the called terminal
Call. ISDN is also used to notify the call setup status.
Call setting acceptance message CALL_PROC to the calling terminal
Send out. When the receiving terminal detects an incoming call, the own terminal receives the incoming call.
When possible, call messages are sent to ISDN.
Send ALERT and ISDN call message
ALERT is sent to the calling terminal and calling of the called terminal is started.
Notify that. When the called terminal answers the incoming call, a response message
CONN is sent to ISDN, and ISDN sends a response message.
The CONN is sent to the calling terminal and the called terminal accepts the call.
Notify that. The ISDN sends a response confirmation message to the called terminal.
Sends a message CONN_ACK and confirms the response of the called terminal
At that time, data transmission between the calling terminal and the called terminal
Information channel (B channel) is established. As a result, the communication between the calling terminal and the called terminal
In each case, data transmission using information channels
Is executed according to the transmission control procedure set for the last transmission function.
You. When the data transmission is completed, the calling terminal
Sends a disconnect message DISC to ISDN and sends
Requesting the release of the channel, the ISDN sends a release message R
Sends the EL to the calling terminal to notify the recovery of the information channel
You. On the other hand, ISDN sends the disconnect message DI
Sends the SC to request release of the information channel,
Send release message REL to ISDN and send information channel
Notify the recovery of the file. As a result, the calling terminal completes the channel disconnection.
Release complete message REL_COMP that notifies
Information channel between originating terminal and ISDN in response to DN
Is released. At the same time, ISDN will release
Sends the message REL_COMP to the destination terminal,
The information channel between N and the terminating terminal is released. in addition
Information channel set between the calling terminal and the called terminal
The flannel is completely released. Thus, between the originating terminal and the destination terminal
An information channel is set up, data transmission takes place, and data
When the data transmission is completed, the information channel is released. Further, each of the ISDN call setup menus is provided.
The message is, as shown in FIG.
Protocol specifications (formats,
Protocol identifier,
Identify which call the message is involved in
Call number to identify the content of each message
Message type for each message
Required information elements that are always added, and each message
From the additional information elements that are added to the message as needed.
You. The required information element depends on the message type.
0, 1 or more are set and additional information elements
May have 0, 1 or more placed depending on the situation.
You. The call setup message SETUP is shown in FIG.
As shown in (b), “communication ability” is an essential information element.
The additional information elements include, for example, "calling number",
"Destination number", "Destination subaddress", "Lower layer matching"
, High layer consistency, and user
The information element such as "the". The release completion message REL_COM
P is, as an essential information element, for example, “reason indication”
As additional information elements, for example, "display" and
And information elements such as "user / user". The outline of these information elements will be described.
You. The “transmission capability” information element is used to transmit information.
Content is audio, unrestricted digital information, restricted digital information
Report, 3.1KHz audio, 7KHz audio,
Or the ability to transfer information indicating whether it is video
Whether the switching function used is circuit-switched or not.
The transfer mode and the speed of information transfer
Information transfer speed, information indicating the form of information transfer,
And information representing the protocol of user information
Become. The “calling number” information element is the ISDN of the calling terminal.
Number, and the “originating subaddress” information element
Indicates the sub address set at the end. "The arrival number
No. "information element indicates the ISDN number of the called terminal,
The “Destination subaddress” information element is set in the destination terminal.
Subaddress. The contents of the sub address
Can be arbitrarily defined by the user. The “lower layer consistency” information element is
It is intended to be used for communication with the terminal,
The basic content is the same as the "communication capability" information element. Sa
In addition, this “lower layer compatibility” information element
Includes padding content. The “higher layer consistency” information element is
It is intended to be used for consistency check with
For example, telephone, group 2 / group 3 facsimile, guru
Group 4 facsimile, mixed mode, teletex,
Videotex, Telex, Audio Visual
Or a message handling system
Which terminal functions have which terminal functions
Or display. [0049] The "user / user" information element is between users.
It is intended to be used for transmitting
-The content of the "user" information element is interpreted by ISDN.
Without being transferred transparently
Transmitted to the. The “reason display” information element has the information element
Message (in this case, release completion message REL_
COMP) was generated or occurred during the call setup procedure
Notify diagnostic information that indicates the reason for the error, etc.
It is for The "display" information element is transmitted from ISDN to the user.
This is for representing various display information with respect to. With the above configuration, when the apparatus is in the standby state,
At this time, the system control unit 1 performs an operation as shown in FIG.
ing. That is, when a document is set on the scanner 4,
Or the handset 17 goes off-hook or an incoming call is detected
And whether other functions have been selected by the user.
(N of judgments 101, 102, 103, 104)
O loop), judgment is made when a document is set on the scanner 4 10
If the result of step 1 is YES, the switching circuit 16
Connect EC14 to Group 3 facsimile modem 15
Facsimile transmission processing (processing 105) after
Off-hook detected and the result of decision 102 is YES
And handset CODEC 14 by switching circuit 16
After the connection to No. 17, a call process (process 106) is executed,
If the result of the judgment 103 for detecting the incoming call is YES, the incoming call is received.
The processing (processing 107) is executed, and the user
Is selected, and if the result of the judgment 104 is YES,
Execute the process (process 108) corresponding to the selected function,
Upon completion of each process, the process returns to the standby state. FIGS. 5 and 6 show a facsimile transmission process.
An example of (Process 105) is shown. The system control unit 1 allows the user to operate and display the operation display unit.
6 by operating the start key (not shown) or
Take the handset 17 and go off-hook or
Monitors whether to perform another operation such as entering a number.
NO loop of disconnection 201, 202, 203). The user performs another operation such as inputting a number.
If the result of the judgment 203 is YES,
Execute the input process of the selected operation (process 204), and input
Save the data. When the start key is turned on,
When the result is YES, the normal automatic calling operation is performed.
The call setup message SETUP
"3.1KHz audio" as "Transmission capability" information element
Set the data to represent
"Group 2 / Group 3 facsimile"
Is set (process 205), and the
Sends a call setup message SETUP to ISDN,
A call is made to the specified destination (process 206). Next, a predetermined call setting procedure is executed (processing).
207), an information channel is established with the partner terminal
(Process 208), a predetermined group is
Execute the loop 3 facsimile transmission procedure, and
The data is transmitted to the partner terminal (process 209). Group 3 facsimile by information channel
When the retransmission procedure is completed (process 210), a predetermined call is disconnected.
A recovery operation is executed (process 211), and a series of transmission operations are performed.
finish. Also, when the user goes off-hook in the call waiting state,
If the result of the disconnection 202 is YES, in this case,
Group after the user talks with the user of the other terminal
Manual transmission operation with 3 facsimile transmission operations
Is activated, so that the switching circuit 16
After connecting the EC 14 to the handset 17, the user
A number is entered (process 212). When the number input is completed, a call setting message
"3.1 KHz ON" is included in the "transmission capability" information element of SETUP.
Audio data,
“Group 2 / Glue” is included in the “Higher Layer Consistency” information element.
Set the data representing "3 facsimile" (processing
213), the call setup message SETUP is sent to ISDN
To send the designated destination (process 21).
4). Next, a predetermined call setting procedure is executed (processing).
215), an information channel is established with the partner terminal
(Process 216), the user of the own terminal and the user of the partner terminal
A call is made between. In that state, the start key
Goes on, detects on-hook, disconnect message
It is monitored whether or not the DISC is received (decisions 217, 21).
8,219 NO loop). When the start key is turned on, the
If the result is YES, use that information channel
To perform a predetermined group 3 facsimile transmission procedure, and
The image information is transmitted to the partner terminal (step 220). Then, the group 3 flow by the information channel
When the facsimile transmission procedure is completed (process 221), a predetermined
(Step 222) to perform a series of transmissions.
The communication operation ends. Further, the on-hook is detected and the judgment 218 is made.
If the result of the step is YES, a disconnection message DISC is sent.
Out (process 223), and receives the release message REL.
(Process 224), Release Complete Message REL_COMP
Is sent (process 225), and a series of operations is terminated. When the disconnect message DISC is detected,
If the result of decision 219 is YES, a release message
(Step 226) and a release completion message
Upon receiving REL_COMP (process 227), a series of operations are performed.
End the work. As described above, in this embodiment, the manual
Even if the transmission operation is activated, the transmission capability information
Data that represents "3.1 KHz audio"
As well as the “high-layer consistency” information element.
Data representing "Group 2 / Group 3 facsimile"
Send a call setup message SETUP with the data set
Call the other party's terminal, so the other party's terminal
If you have a facsimile function, you can answer incoming calls.
Communication is possible. FIG. 7 shows an example of the call process (process 106).
Is shown. First, the user is required to input a number (processing
301), when the number input is completed, the call setting message S
Expressing "voice" in the "communication capability" information element of ETUP
Set the data and set the
The data representing "telephone" is set in the report element (Process 3
02), the call setup message SETUP is sent to ISDN.
The call is transmitted and a designated destination is called (process 303). Next, a predetermined call setting procedure is executed (processing).
Process 304), an information channel is established with the partner terminal
(Process 305), the user of the own terminal and the user of the partner terminal
A call is made between. In that state, detect on-hook.
Monitoring whether to send the disconnect message DISC
(NO loop of determinations 306 and 307). Further, the on-hook is detected, and the decision 306 is made.
If the result of the step is YES, a disconnection message DISC is sent.
Out (process 308), and receives the release message REL.
(Process 309), Release Complete Message REL_COMP
Is sent (process 310), and a series of operations is terminated. When the disconnect message DISC is detected,
If the result of determination 307 is YES, a release message
Send out the REL (process 311) and release complete message
Upon receiving REL_COMP (process 312), a series of operations are performed.
End the work. FIGS. 8 and 9 show an incoming call process (process 10).
7) shows an example. The system control unit 1 sends the call setting message S
The information element of ETUP is analyzed (process 401), and "transmission"
The data representing "voice" is set in the "capability" information element.
And "telephone" in the "higher layer integrity" information element
It is checked whether the data to be represented is set (determination 40).
2) If the result of determination 402 is NO,
"3.1 KHz audio" in the "Capability" information element
Data is set, and the “higher layer consistency” information
"Group 2 / Group 3 facsimile"
It is checked whether the data to be passed is set (decision 40).
3). If the result of determination 404 is NO, the calling terminal
And the terminal capability is different, so the incoming call is ignored (Process 4
04). When the result of decision 402 is YES,
In the case of, the call for the telephone function is received, so the switching circuit 1
6 connected the CODEC 14 to the handset 17
Later, generation of a ringing tone is started from the tone generation circuit 10.
(Process 405), and sends out a call message ALERT.
(Step 406) and wait until the user goes off-hook (decision 40).
7 NO loop). The user picks up the handset 17 and
If hook is detected and the result of determination 407 is YES,
A response message CONN is sent (process 408), and the
The generation of the ringing tone from the call generation circuit 10 is terminated,
Receiving the confirmation message CONN_ACK (process 41)
0). As a result, an information channel is established and
A call is made between the users using this. In this state,
Off-hook detected or disconnect message DISC received
Then, the process waits (NO loop of determinations 411 and 412). When the off-hook is detected, the result of decision 411 is
If YES, send a disconnect message DISC
(Processing 413), and receives the release message REL (processing 413).
Process 414), send release complete message REL_COMP
(Step 415), and the series of operations ends. Further, when the disconnection message DISC is detected,
If the result of decision 412 is YES, a release message
(Step 416) and a release completion message
Upon receiving REL_COMP (process 417), a series of operations are performed.
End the work. If the result of decision 403 is YES
Call for the Group 3 facsimile function
The switching circuit 16 switches the CODEC 14 to group 3
After connecting to the facsimile modem 15, a predetermined call setup
The order is executed (step 418), and the information
When the channel is established (operation 419), the information channel
Executes specified group 3 facsimile transmission procedure using
Then, the image information is received (process 420). Group 3 facsimile by information channel
When the retransmission procedure is completed (process 421), a predetermined call is disconnected.
A recovery operation is executed (process 413), and a series of transmission operations is performed.
finish. In this way, an incoming call by the telephone function is received.
If the call is
If a call is received by the facsimile function,
Image information receiving operation by loop 3 facsimile transmission procedure
Do. As described above, according to the present invention,
Use ISDN as a transmission path and at least
Loop 3 facsimile transmission function and manual facsimile
Control of ISDN terminal equipment with transmission function and call function
The original is set on the original reading means
No handset and call handset is off-hook
When the state is reached, the call function is applied and
For the destinations, “Audio” is added to the “Transmission capability” information element.
Set the high quality layer
Data indicating "telephone" is set in the "information" element
The call setting message is sent to make a call, and the original reading means
The original is set on the
When Doset goes on-hook, Group 3
Simultaneous transmission function is applied and specified destination
On the other hand, the “transmission capability” information element includes “3.1 kHz audio”.
Along with the data that represents
"Group 2 / Group" information element
Call setup with data representing "3 facsimile"
Sends a message and makes a call.
Handset and the handset for calls
When the machine goes off-hook, the manual facsimile transmission function
Applicable, and to the designated destination,
"3.1 KHz audio" in the "power" information element
Set the data for the
The “sex” information element contains “Group 2 / Group 3 facsimile”
A call setup message with data representing
So that they can send outgoing calls.
Can be specified properly, and when sending a manual facsimile,
"3.1 KHz audio" in the "Transmission capability" information element
Set the data that represents
"Consistency" information element contains "Group 2 / Group 3 Fac
Call setup message with data representing "Simiri"
Sent to the subscriber line of the designated destination.
Group 3 facsimile machine can be called properly
The effect is obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a group 3 facsimile apparatus according to one embodiment of the present invention. FIG. 2 is a time chart showing an example of a call control procedure performed between an ISDN and a terminal device. FIG. 3 is a schematic diagram showing an example of a signal format of a call setup signal and information elements of a call setup message. FIG. 4 is a flowchart showing a processing example of the apparatus of FIG. 1 in a standby state. FIG. 5 is a flowchart illustrating a part of an example of a facsimile transmission process. FIG. 6 is a flowchart showing another part of the example of the facsimile transmission process. FIG. 7 is a flowchart illustrating an example of a call process. FIG. 8 is a flowchart showing a part of an example of facsimile reception processing. FIG. 9 is a flowchart showing another part of the example of the facsimile receiving process. [Description of Signs] 1 System control unit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04M 11/00-11/10 H04L 13/02-13/18 H04L 29/00-29/12 H04N 1 / 00 H04N 1/32-1/36 H04N 1/42-1/44

Claims (1)

(57) [Claim 1] An IS that uses ISDN as a transmission path and has at least a group 3 facsimile transmission function, a manual facsimile transmission function, and a call function.
In the control method of the DN terminal device, when a document is not set on the document reading means and the handset for a call goes off-hook,
While applying the call function, to the specified destination,
In the "communication capability" information element, data representing "voice" is set, and in the "high-definition layer compatibility" information element, a call setting message in which data representing "telephone" is set is transmitted and a call is made. The document is set on the document reading means, and
When the handset for a call enters the on-hook state, the group 3 facsimile transmission function is applied, and the "transmission capability" information element includes "3.1" for the designated destination.
In addition to setting data representing "KHz audio", a call setting message in which data representing "Group 2 / Group 3 facsimile" is set in the "High-quality layer compatibility" information element is transmitted, and a call is made. The original is set on the
When the handset for a call goes off-hook, the manual facsimile transmission function is applied, and the "transmission capability" information element includes "3.1 KHz" for the designated destination.
Set the data representing "Audio"
A method for controlling an ISDN terminal device, comprising transmitting a call setup message in which data indicating "group 2 / group 3 facsimile" is set in a "high-quality layer compatibility" information element to make a call.