JPH02262759A - Communication equipment - Google Patents

Abstract

PURPOSE:To refuse reception by refusing an incoming call at a reception side when it is judged that relay is impossibly by a communication terminal at the reception side by transmitting a relay function request from the communication terminal at a communication side to the communication terminal at the reception side after attaching a subaddress switched between two equipment for line connection. CONSTITUTION:The communication equipment judges whether or not the request of a relay instruction is included in a call issuing request generated by instructing transmission by operating a control panel by an operator, or the call issuing request generated by detecting the fact that it arrives at designated time set by the control panel by the operator by communication equipment at a transmission side. When it is the request of the relay instruction, relay instruction information is attached o the subaddress, then the call issuing request is issued to a network 18. In other words, a call is issued to the network 18 after relay instruction information data to instruct an address required for the relay by the facsimile equipment of a transmission destination, information representing the length of the relay instruction information data, and the information of an identifier to represent the existence of the relay instruction information data are attached on the subaddress.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an integrated digital network (ISDN: Int
egrated 5 services Digital
The present invention relates to a communication device connected to a line such as a network, and more specifically relates to a communication device having a relay function.

[Prior Art] Conventionally, in a communication device such as a facsimile machine, image information is sent from one facsimile machine to another facsimile machine via a line, and received image information is transmitted from the other facsimile machine to another facsimile machine. Relay communication is widely practiced. In such relay communication, a relay instruction request is notified when the transmission/reception capabilities of the sending/receiving facsimile devices are negotiated after the line between one sending facsimile machine and another receiving facsimile machine is connected. was.

[Problems to be Solved by the Invention] For this reason, in the above conventional example, since the sending facsimile machine requests the relay function from the receiving facsimile machine after the line is connected, the receiving facsimile machine cannot perform relay communication. There was a problem in that even when it was not possible, extra charges were incurred.

The present invention has been made in view of the above-mentioned conventional example, and transmits a relay request from a transmitting side communication terminal to a receiving side communication terminal by adding a subaddress that is directly exchanged between the two for line connection. The purpose of the present invention is to provide a communication device that can immediately reject an incoming call and refuse reception when the communication terminal on the receiving side determines that relay transmission is not possible, thereby avoiding unnecessary charges. do.

[Means for Solving the Problems] In order to achieve the above object, a communication device of the present invention has the following configuration. That is, in a communication device in which a plurality of communication devices can be connected on a line, and each of them can be identified by subaddress information added to the subscriber number, a relay instruction information section that indicates relay instruction contents in the subaddress information is provided. a calling means for making a call by incorporating a calling means; a determining means for receiving a response signal to the call by the calling means and determining whether or not the incoming call has been rejected; and a determining means for determining whether the incoming call has been rejected by the determining means. If the determination is made, the transmission process is terminated, and if the incoming call is not rejected, the control means is configured to perform control to transmit the image.

According to another invention, in a communication device in which a plurality of communication devices can be connected on a line and each of them can be identified by subaddress information added to a subscriber number, relay instruction information is transmitted from the line. It has an analysis means for receiving the sub-address information included therein and analyzing the relay instruction information, and an execution means for selecting and executing an incoming call rejection process or a relay instruction acceptance process according to the analysis result of the analysis means.

[Operation] In the above configuration, a call is made by incorporating a relay instruction information section indicating relay instruction contents into the subaddress information, and a response signal to the call is received to determine whether or not the incoming call has been rejected. If it is determined that the incoming call has been rejected, the transmission process is terminated, and if the incoming call is not rejected, the image transmission is performed.

According to another configuration of the invention, subaddress information including relay instruction information is received from the line, and the relay instruction information is analyzed. Depending on the result of this analysis, incoming call rejection processing or relay instruction acceptance processing is selected and executed. In this way, after receiving a relay instruction, it operates to perform relay processing according to the contents of the instruction.

[Embodiments] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[Description of facsimile device (Fig. 1)] Fig. 1 is a connection diagram showing a state in which a facsimile device, which is an embodiment of the communication device according to the present invention, is connected to an ISDN network, which is a line. be.

In the figure, 1 is an operation panel section with an array of dials and switches operated by the operator, 2 is a reading section (reader section) that photoelectrically scans the original to be sent and forms an image signal, and 3 is a reader section. For example, it is a printer section that is made up of a dot printer such as a laser beam printer (LBP) or a thermal transfer printer, and converts a received signal sent via a line into a dot pattern on recording paper and records it. Reference numeral 4 denotes a storage section consisting of a non-volatile memory such as a hard disk or a floppy disk.

5 is an operation panel control unit that controls the operation panel unit 1; 6 is a reader control unit that controls the reader unit 2; 7 is an OCR recognition unit that recognizes characters from information read by the reader unit 2;
8 is a printer control unit that controls the printer 3; 9 is a CR output control unit for recording characters in the printer unit according to the character code sent from the line; 10 is a storage unit 4
This is a storage control unit for controlling.

Reference numeral 11 denotes a microprocessor unit that controls the overall operation of this facsimile machine, and includes a ROM that stores a control program shown in FIGS. 2 and 3, which will be described later, and a RAM that temporarily stores various information. .

12 is a number table storage unit that stores information indicating destinations to be relayed; 13 is a buffer memory that stores image information to be relayed sent from the line; and 14 is an encoded and compressed image data read by the reader unit 2. or l5
This is an encoding/decoding unit that decompresses compressed image data sent from the DN (line).

15 is a communication control unit that controls communication between this facsimile device and a plurality of other facsimile devices (not shown) connected to the ISDN line 18 (its configuration is the same as that shown in FIG. 1); 16 is an automatic dialing unit that automatically sends out dialing signals; 17 is a network control unit (NCU); B
L represents a pass line, and as shown in the figure, each component is interconnected via the pass line.

Next, the operation of the communication device shown in the above embodiment will be explained.

FIG. 2 is a flowchart showing the operation of a facsimile machine, which is a transmitting side communication device connected to the 15DN.

A call request is generated when the operator instructs transmission by operating the operation panel, or a call request is generated when the transmitting communication device detects that the specified time set by the operator on the operation panel has been reached. In step S20, it is determined whether or not a request for relay instruction is included. If the call request does not include a relay instruction request, normal call communication processing is performed in step S21. If it is a relay instruction request, in step S22, relay instruction information is added to the subaddress and a call request is made to the network 18. That is, as will be explained later with reference to FIG.
Relay instruction information data that instructs the destination necessary for relaying to the destination facsimile device, information that indicates the length of the relay instruction information data, and information such as an identifier that indicates that the relay instruction information data exists. After assigning it to the subaddress, a call is made to 1lt918.

A response signal from the facsimile machine that requested the relay for such a call is sent via the network, so
The response signal sent back is received in step S23. Next, the process proceeds to step S24, where this response signal is determined to determine whether the destination facsimile machine has approved or rejected the reception (incoming call). If it is determined that the incoming call has been rejected by the destination facsimile machine, it is determined that the relay instruction request has been rejected, and the process proceeds to step S2.
Ends with 6.

If it is determined that the incoming call has been accepted by the destination facsimile machine, the image to be relayed is transmitted in step S25. Note that this image transmission process is the same as conventional image transmission, so a detailed explanation will be omitted.

FIG. 3 is an operation flowchart of the facsimile machine, which is a receiving side communication device connected to the 15DN.

When the receiving side communication device receives in step S30 that the call request from the sending side communication device has been made via the network, relay instruction information data is added to the subaddress included in the call request command in step S31. The presence of an identifier identifies whether the If it is determined that the identifier does not exist and relay is not requested, step S3
2, a conventionally known communication process is performed.

If an identifier indicating the presence of relay instruction information data exists in the subaddress, in step S33, the relay instruction information data is analyzed and the destination to which relay is instructed and the relay destination registration table stored in the number table storage unit 12 are determined. Compare with the number. As a result, if there is a problem, the incoming call is rejected in step S34.

If there is no problem, the process advances to step S35, and the remaining capacity of the buffer memory 13 for storing images for relaying is checked. If there is not enough remaining power, the process advances to step S34 and the incoming call is rejected. If there is sufficient remaining amount, step S36
sends a signal to the network to allow the incoming call. As a result, as described above, image transmission is performed in step S25 of the transmitting side communication device, and the transmitted image is received in step S36, and the received image information is stored in the buffer memory 13.

Note that if the incoming call is rejected in step S34 described above, an incoming call rejection signal is sent from the receiving side communication device to the transmitting side communication device via the network. As a result, the communication device on the sending side determines that the incoming call is rejected in step S24, and ends the process without transmitting the image.

In this way, the relay image information received by the receiving communication device is relayed and transmitted using a conventionally known method.

FIG. 4 is a diagram showing an example of the structure of the ISDN number used in this embodiment, where A1 indicates the 15DN number, B1 is the line type identifier indicating the line type, and B2 is the domestic ISDN number.
This is a domestic subscriber number, which is a number given to those who have subscribed to the SDN.

B3 is a subaddress, and A2 is this subaddress B
3 shows the data structure. B4 is an identifier for identifying sub-address data, B5 is a data length area indicating the length of sub-address data, B6 is sub-address data, B7
is an identifier indicating that the relay instruction information is used in this embodiment, B8 is data indicating the length of the relay instruction information used in this embodiment, and B9 is relay instruction information used in this embodiment. stores the number of the facsimile machine of the relay destination.

As explained above, according to this embodiment, by attaching relay instruction information to the subaddress and communicating, when relay cannot be executed, it can be rejected without connecting the line, so there is an effect that unnecessary charges are not incurred. .

[Effects of the Invention] As explained above, according to the present invention, a relay function request from a communication terminal on the sending side to a communication terminal on the receiving side is attached to a subaddress that is directly exchanged between the two addresses for line connection. By sending a call, if the receiving communication terminal determines that relaying is not possible, it can reject the incoming call and refuse to receive it.
This has the effect of not requiring extra charges.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing an embodiment of the communication device to which the present invention is applied, Fig. 2 is a flowchart showing the operation of the communication device of the embodiment when making a call, and Fig. 3 is a block diagram showing an example of the communication device of the embodiment. FIG. 4 is a flowchart showing the operation when a call is received, and FIG. 4 is a diagram showing an example of the data structure of an ISDN number used in the embodiment. In the figure, 1...operation panel section, 2...league section, 3.
...Printer, 4...Storage unit, 5...Operation panel control unit, 6...League control unit, 7...OCR recognition unit,
8... Printer control unit, 9... OCR output control unit,
DESCRIPTION OF SYMBOLS 10... Storage control unit, 11... Microprocessor unit, 12... Number table storage unit, 13... Buffer memory, 14... Code decoding unit, 16... Automatic dialing unit, 17. ...NCU, 18... It is a line. Patent applicant Canon Co., Ltd. Figure 2

Claims (2)

[Claims] (1) In a communication device in which multiple communication devices can be connected on a line, and each of them can be identified based on subaddress information added to the subscriber number, relay instruction information indicating the contents of the relay instruction in the subaddress information. a calling means for making a call by incorporating a calling means; a determining means for receiving a response signal to the call by the calling means and determining whether the incoming call has been rejected; and a determining means for determining whether the incoming call has been rejected by the determining means. 1. A communication device comprising: control means for controlling the transmission process to be terminated when it is determined that the incoming call has been received, and for controlling the image transmission to be performed if the incoming call has not been rejected. (2) A communication device that can connect multiple communication devices on a line and can identify each one using subaddress information added to the subscriber number receives subaddress information including relay instruction information from the line. and an analysis means for analyzing the relay instruction information, and an execution means for selecting and executing incoming call rejection processing or relay instruction acceptance processing according to the analysis result of the analysis means, and after receiving the relay instruction, A communication device characterized by performing relay processing according to the contents of the instruction.