JPH11164046A - Communication terminal equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide communication terminal equipment with which information can be transmitted to or from equipment on the opposite side even when the equipment is under any operation such as communicating or speaking. SOLUTION: A main control part 1 sends out a SETUP message while having transmission information such as equipment abnormality or consumption article order in its field of user-user information (UUI) and when the equipment on the opposite side receiving such a procedure signal disconnects a call, it is judged the information is transmitted to the equipment on the opposite side where it is known data contained in this field are transmission information but when the equipment on the opposite side accepts the call, it is judged the equipment on the opposite side is equipment which does not know the transmission information is contained in the UUI field.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ISDN (Integrated Services Digital Network) having a plurality of communication channels.
The present invention relates to a communication terminal device connected to a communication line as in k).

[0002]

2. Description of the Related Art At present, communication terminal apparatuses capable of G4 facsimile communication for transmitting and receiving data in a digital form by connecting to ISDN are becoming widespread. Such a communication terminal device generally has a G3 facsimile communication function and a telephone function in addition to the G4 facsimile communication function.

[0003] The ISDN user / network interface is based on ITU.
The (International Telecommunication Union) -T Recommendation I.410 series standardizes the basic interface and the primary rate interface. For example, a basic interface that assumes general usage such as performing facsimile communication and data communication while making a telephone call has two B channels (channel speed: 64 kbps) for communication of various user information signals.
s), and a plurality of different communication channels, one D channel (16 kbps) for transmitting a circuit switching control signal by ISDN, are time division multiplexed on the same interface.

In a call setup procedure in ISDN, prior to communication, a call setup request (ie, an information terminal such as an ISDN address (a called number and a called subaddress) of a communication partner and a transmission capability used for communication are set from the calling terminal to the network. SETUP) message is transmitted. The network returns a CALL PROC (call setup acceptance) to the calling terminal and sends a SETUP message to the called terminal. The called terminal initiates the call if it is ready to accept the incoming call,
An ALERT (call) indicating that a call is being made is transmitted to the network.

[0005] Upon receiving the ALERT from the destination terminal, the network transmits an ALERT to the originating terminal to notify that there is a terminal that can accept the call and that the calling of the terminal has started. When the called terminal detects a response to the call due to off-hook of the user or the like, it transmits a CONN (response) to the network. The network transmits the CONN ACK (acknowledgment) to the destination terminal and the CONN to the calling terminal.

The above control signals are performed on the D channel,
Upon receiving the CONN ACK from the network, the called terminal enters a communication state on the B channel. Therefore, the communication terminal device connected to the ISDN receives the SETUP message of the call request on the D channel while using the B channel, and also receives the SETUP message of the call request.
Messages can be sent.

[0007]

However, it receives a SETUP message for an incoming call request on the D channel, and
A communication terminal device that can send a SETUP message and can use two B channels for information transmission, even if it is connected to an ISDN, if both B channels are in use, other devices From or to other devices is not possible.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and sends out a call setup procedure signal including transmission information to be transmitted to a partner device, or establishes a call setup from the partner device. If the communication signal is included in the procedural signal, the call is disconnected, so that information transmission to or from the partner device can be performed regardless of the operation of the device, such as communication or telephone conversation. It is an object of the present invention to provide a communication terminal device such as a facsimile device that can be used.

[0009]

According to a first aspect of the present invention, there is provided a communication terminal device connected to a communication line having a plurality of communication channels, the procedure of a call setting including transmission information to be transmitted to a partner device. Means for transmitting a signal, means for judging that the communication information has been transmitted to the partner apparatus when the partner apparatus receiving the procedure signal disconnects the call, and means for disconnecting the call when the partner apparatus accepts the call And characterized in that:

[0010] In the first invention, transmission information to be transmitted to a partner device is transmitted in a field of user / user information (UUI) of a call setup procedure signal, and transmitted. Is disconnected, it is determined that the information has been transmitted to the partner device that knows that the data contained in this field is transmission information, and if the partner device accepts the call, the partner device Since the device does not know that the transmission information is included in the user / user information field, the call is disconnected. Therefore, even if a partner device that knows that there is a possibility that a call setup procedure signal including transmission information may be transmitted is in use of a plurality of communication channels for actual information transmission, Information can be transmitted to

According to a second aspect of the present invention, in a communication terminal device connected to a communication line having a plurality of communication channels, it is determined whether or not the received call setup procedure signal includes transmission information from the calling side. Means for detecting, while extracting the transmission information from the procedure signal when the procedure signal includes the transmission information,
Means for disconnecting the call.

In the second invention, it is detected whether or not the user / user information field of the received call setup procedure signal includes transmission information from the calling side. While taking out the procedure signal, disconnect the call,
If no transmission information is included, a normal reception operation is performed. Therefore, even when a plurality of communication channels for actual information transmission are being used, information transmission can be performed by receiving a call setup procedure signal including transmission information from the calling side on the control signal transmission communication channel. Will be possible.

[0013] The communication terminal device according to a third aspect of the present invention comprises the first or second communication terminal device.
The transmission information of the invention is information indicating the status of the apparatus. Therefore, irrespective of what kind of operation is being performed, such as during communication or communication, the communication information indicating the status of the device, such as an abnormality of the device or the use status of consumables, is transmitted to a partner device such as a service center. And, for example, urgent information is transmitted from a calling party such as a service center.

[0014]

FIG. 1 is a block diagram showing a configuration of a facsimile apparatus as a communication terminal apparatus according to the present invention.
The main control unit 1 not only controls each part of the hardware of the apparatus through a bus, but also converts the image data of the original into MH, MR, MM based on software stored in a ROM (not shown).
RS232C by encoding / decoding, encoding / decoding, modem switching, AT command to encode / decode by the encoding method such as R
Software such as a communication procedure including the control of the above.

In the present embodiment, the main control unit 1 stores, in the case of the calling side, transmission information to be transmitted to the partner apparatus such as abnormality of the apparatus and ordering of consumables in the user / user information (UUI) field of the SETUP message. If the partner device that has received this procedure signal disconnects the call, it is determined that the information has been transmitted to the partner device that knows that the data contained in this field is transmission information. If the other device accepts the call, the call is disconnected because the other device does not know that the UUI field contains the transmission information.

In the case of the called side, the main control unit 1 detects whether or not the UUI field of the received SETUP message includes information transmitted from the calling side, such as an abnormality of the apparatus or ordering of consumables. If the transmission information is included, the transmission information is extracted from the procedure signal, while the call is disconnected, and if the transmission information is not included, a normal reception operation is performed.

By the way, ITU-T Q series recommendation Q.931
Contains a SETUP message and RELEASE COMPLET
It is specified that user / user information of a maximum of 128 bytes per message set in the UUI field of the (ION) message is transparently transferred between the calling terminal and the called terminal.

An electrophotographic printer 2 records image data of a document received from another facsimile machine. The scanner 3 reads an original with a CCD or the like, and outputs image data of a black and white binary original.

The operation unit 4 includes various function keys such as a ten-key, one-touch key, and a program one-touch key necessary for operating the apparatus. Also used as a character input key when setting a message. The operation unit 4 includes a display such as a liquid crystal display (abbreviated as LCD), and displays an operation state of the apparatus, image data of a document, a message from a called party or a caller, and the like.

The RAM 5 is composed of an SRAM, a flash memory, or the like, and stores temporary data generated when executing software. The image memory 6 is composed of a DRAM or the like,
Stores image data of a document or the like.

The LAP (Link Access Procedure) -B 11 controls the balanced link access procedure for the B channel and performs actual data communication on the two channels B1 and B2. LAP-D 12
Controls the link access procedure for the D channel
To transmit a circuit switching control signal. PCM (Pulse Code Modulation) codec 13
Performs mutual conversion between analog audio signals and digital data.

The modem 7 is a modem for transmitting image data of a document read by the scanner 3 to a G3 facsimile. The switching unit 8 provided between the modem 7 and the PCM codec 13 is, for example, a relay switch, and switches the connection of the PCM codec 13 between the telephone 9 and the modem 7. At the time of G4 communication, the read image data is encoded and
Since it is sent to ISDN through B11, the modem 7 and PCM codec 13 are not used.

Next, the operation of the communication terminal device according to the present invention when receiving a call will be described with reference to the flowchart of FIG. 2, taking as an example the case where the communication terminal device of the present invention is a device that provides an information distribution service. . When SETUP is received on D channel
(Step S2-1), it is determined whether a message is included in the UUI field of SETUP (Step S2-2). UU
If there is no message in the I field, it is a normal call setup signal and normal reception processing is performed.

On the other hand, if the UUI field contains a message, the type of service requested by the calling side is detected (step S2-3). If the information distribution service is requested, the designated information number is detected and the telephone number of the caller is detected (step S2-4).
. Set the data indicating that the message was received in the UUI field of RELEASE COMPLETION and send it to the network.
(Step S2-5), the line is disconnected (Step S2-6).

Further, a call is made to the telephone number of the caller (step S2-7), and the image data of the designated information number is read out from the database storing the distribution information and transmitted to the network (step S2-7). S2-8), disconnect the line (step S2
-9).

The operation of the communication terminal device according to the present invention at the time of making a call will be described with reference to the flowchart of FIG. 3, taking as an example the case where the communication terminal device orders consumables from a service center. . It is detected whether the remaining amount of toner has dropped below a predetermined level to be ordered (step S3-1),
If the level is lower than the predetermined level, the character "TONER" of the message input by the key operation of the operation unit 4 or created and downloaded by the personal computer is set (step S3-2).

Next, it is detected whether or not the total number of rotations of the drum has reached a predetermined number N or more for replacing the drum.
(Step S3-3) If N or more, the character "DRUM" is set as described above (Step S3-4).

The set character is entered in the UUI field of SETUP (step S3-5), and a SETUP signal addressed to the telephone number of the service center is transmitted to the network (step S3-6). It is determined whether or not RELEASE COMPLETION has been transmitted from the service center to the SETUP addressed to the service center (step S3-7), and the RELEASE COMPLETI
If ON is sent, this RELEASE COMPLETION
It is detected whether or not data indicating that the message has been received is set in the UUI field (step S3
-8).

RELEASE COMPLETI from service center
If the ON UUI field indicates that the message has been received, the process ends. At this time, the line is disconnected on the service center side.

On the other hand, RELEASE COMP
If LETION is not sent (NO in step S3-7)
, Disconnect the line (step S3-9),
A message such as “Please inform us of toner / drum replacement by telephone” is displayed (step S3-1
0).

Also, RELEASE CO from the service center
If the UUI field of MPLETION does not indicate that the message has been received (NO in step S3-8), a message such as "Please inform us of toner and drum replacement by telephone" is displayed on the LCD of the operation unit 4. It is displayed (step S3-10).

[0032]

According to the first aspect of the present invention, the communication terminal apparatus transmits the call setup procedure signal in the UUI field of the call setup procedure signal with transmission information to be transmitted to the other apparatus. If the call is disconnected, it is determined that the information has been transmitted to the partner device that knows that the data contained in this field is the transmission information, and if the partner device accepts the call, the partner device is notified by the UUI To disconnect the call because it is a device that does not know that the transmission information is included in the field, a partner device that knows that there is a possibility that a call setup procedure signal including the transmission information may be transmitted, Even when using multiple communication channels for actual information transmission,
There is an excellent effect that information can be transmitted to the partner device.

The communication terminal device of the second invention detects whether or not the UUI field of the received call setup procedure signal includes transmission information from the calling side. If the call is disconnected from the procedural signal and the call is disconnected and the transmission information is not included, a normal reception operation is performed. Therefore, even if a plurality of communication channels for actual information transmission are being used, transmission from the calling side is performed. There is an excellent effect that information can be transmitted by receiving a call setup procedure signal including information through a communication channel for transmitting control signals.

In the communication terminal device according to the third aspect of the present invention, since the transmitted information is information indicating the status of the device such as the device abnormality and the usage status of consumables, the operation of the communication terminal device during communication, during a call, etc. Even if it is, it is possible to transmit the transmission information indicating the status of the own device to a partner device such as a service center,
Also, there is an excellent effect that urgent information is transmitted from a calling side such as a service center.

[Brief description of the drawings]

FIG. 1 is a block diagram of a communication terminal device of the present invention.

FIG. 2 is a flowchart of an operation of the communication terminal device according to the present invention when receiving a call;

FIG. 3 is a flowchart of an operation at the time of calling a communication terminal device of the present invention.

[Explanation of symbols]

 1 Main control unit 2 Printer 4 Operation unit 5 RAM 7 Modem 9 Telephone 11 LAP-B 12 LAP-D 13 PCM codec

Claims (3)

[Claims] 1. A communication terminal device connected to a communication line having a plurality of communication channels, means for transmitting a call setting procedure signal including transmission information to be transmitted to a partner device, and receiving the procedure signal. Means for determining that the communication information has been transmitted to the other device when the other device disconnects the call;
Means for disconnecting the call when the partner device accepts the call. 2. A communication terminal device connected to a communication line having a plurality of communication channels, means for detecting whether or not a received call setup procedure signal includes information transmitted from a calling side, and said procedure. A communication terminal device comprising: means for disconnecting a call while extracting the transmission information from the procedure signal when the signal includes the transmission information. 3. The communication terminal device according to claim 1, wherein the transmission information is information indicating a status of the device.