JP3830717B2 - ISDN terminal equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an ISDN terminal apparatus such as a G4 facsimile apparatus.
[0002]
[Prior art]
When a plurality of ISDN terminal devices are connected to an ISDN line and used, the calling side terminal can specify the called side terminal by calling the call setup message SETUP such as higher layer consistency, lower layer consistency, etc. A method by adding information indicating the type of the terminal on the called side and responding only to a terminal that matches the type of the calling terminal among ISDN terminal devices such as a digital telephone and a G4 facsimile apparatus on the called side. is there.
[0003]
However, this method cannot identify which terminal responds when there are a plurality of terminals of the same type on the called side.
[0004]
When the calling party wants to communicate by designating a specific called terminal, there are a method using a sub address and a method using a dial-in service.
[0005]
Such sub-address and dial-in services are generally used for selecting the called terminal so that only the terminal whose number notified at the time of the incoming call matches the number set in advance in the own device responds. However, the purpose of use is not limited to the selection of the called terminal, and various applications are possible.
[0006]
Specifically, for example, the called terminal registers the telephone number or mail address of each transfer destination in advance in the table in association with the number notified at the time of the incoming call as a subaddress or dyne number, When a subaddress or a dyne-in number is notified at the time of an incoming call, a transfer destination corresponding to the notified subaddress or dial-in number is specified with reference to the table, and the received document is transferred to the specified transfer destination. There are applications to such transfer functions.
[0007]
[Problems to be solved by the invention]
However, in the case of a subaddress, if the calling terminal is a terminal that enters from a PSTN line such as a G3 facsimile apparatus, or if the calling terminal does not have a subaddress function, an incoming call by the subaddress is performed. The terminal cannot be specified.
[0008]
On the other hand, in the dial-in service, the called terminal can be selected and the transfer destination can be specified by the dialing number called by the calling party. For example, the calling terminal is a terminal entering from a PSTN line such as a G3 facsimile machine. Even if there is a call or the calling terminal does not have a sub-address function, the transfer function can be realized, but the service charge for dial-in service is relatively high, which increases the cost burden on the user. There was a point.
[0009]
The present invention has been made in view of such circumstances, and an object of the present invention is to provide an ISDN terminal device that can specify a transfer destination by a dial number on the calling side and can realize a transfer function at a low line contract cost on the called side. And
[0010]
[Means for Solving the Problems]
The ISDN terminal apparatus according to claim 1 is connected to an ISDN network, and in the ISDN terminal apparatus that performs communication through the ISDN network, analyzes facility information added to a call setting message received at the time of an incoming call, A port number obtaining unit for obtaining a port number notified based on an incoming call ringing function provided by the ISDN network; and a port number obtained by the port number obtaining unit for receiving a received document by the received communication. And a received document transfer means for transferring to the transfer destination device specified by
[0011]
The ISDN terminal apparatus according to claim 2 is provided with a port number / transfer destination setting table in which each port number and transfer destination identification information are stored in association with each other in the ISDN terminal apparatus according to claim 1, The document transfer means transfers the received document to a transfer destination specified by comparing the port number acquired by the port number acquisition means with the port number / transfer destination setting table.
[0012]
The ISDN terminal apparatus according to claim 3 is the ISDN terminal apparatus according to claim 1, wherein a port number / transfer enable / disable setting table in which each port number and transfer enable / disable setting information are stored in association with each other, and a transfer destination in advance. And a transfer destination setting table in which the received document transfer unit compares the port number acquired by the port number acquisition unit with the port number / transfer enable / disable setting table to determine whether the transfer is possible. When the setting is a transfer enabled setting, the received document is transferred to a transfer destination set in the transfer destination setting table.
[0013]
The ISDN terminal apparatus according to claim 4 is an ISDN terminal apparatus according to claim 1, further comprising information element acquisition means for acquiring a predetermined information element added to a call setting message received at the time of the incoming call, The received document transfer means transfers the received document to the transfer destination device specified by the port number acquired by the port number acquisition means and the information element acquired by the information element acquisition means. Features.
[0014]
The ISDN terminal apparatus according to claim 5 is the ISDN terminal apparatus according to claim 4, wherein the predetermined information element acquired by the information element acquisition means is called sub-address information.
[0015]
The ISDN terminal device according to claim 6 is the ISDN terminal device according to claim 5, wherein each port number is stored with a port number / subaddress / transfer stored in advance in association with a subaddress and transfer destination identification information corresponding to the subaddress. A destination setting table, wherein the received document transfer means collates the port number acquired by the port number acquisition means and the destination subaddress acquired by the subaddress acquisition means with the port number / subaddress / transfer destination setting table; The received document is transferred to the specified transfer destination.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0017]
Before describing the ISDN terminal apparatus according to the embodiment of the present invention, the incoming call ringing function provided by the ISDN network used by the ISDN terminal apparatus according to the present embodiment, which is the premise of the present invention. A brief description will be given with reference to FIGS. In these figures, the “user” side contracts with the ISDN network operator to use the incoming call ringing function, and naturally supports the incoming call ringing function.
[0018]
The “user” side who has contracted to use the incoming call ringing function receives the allocation of the ringing number corresponding to each port number (number) from the provider of the ISDN network. In the ISDN network, each ringing number and each Know the correspondence with port numbers. In the incoming call ringing function, the subscriber line number with the “user” side becomes the ringing number of the port number “1”, and the ringing number is assigned to the port number “2” and the port number “3”. be able to.
[0019]
FIG. 14 shows the case of transmission.
[0020]
In the outgoing call sequence shown in FIG. 5A, the “user” side that makes a call notifies the ISDN network side of terminal designation information (port number) as the “facility” information element of the call setup message SETUP.
[0021]
The ISDN network side that has received the notification, as shown in FIG. 5B, corresponds to the corresponding ringing previously known from the terminal designation information (in this case, “port 2”) notified from the “user” side. It is converted into a division number (in this case, the number “33-2222-0001”), and the converted ringing division number is notified to the “other user” on the called side as a calling number parameter.
[0022]
FIG. 15 shows the case of an incoming call.
[0023]
In the incoming call sequence shown in FIG. 5A, the “user” side that receives the call is notified of terminal designation information (port number) from the ISDN network side as the “facility” information element of the call setup message SETUP.
[0024]
Specifically, as shown in FIG. 5 (b), the notification is made by the number received by the ISDN network as the called party number parameter from the “other user” on the calling side (in this case, the ringing number: 33− 2222-0001) is converted into corresponding terminal designation information (in this case, “port 2”) that is known in advance, and the converted port number is notified to the “user” on the called side as terminal designation information. Is done.
[0025]
As a result, three different ringing numbers can be set for one subscriber line number, and a service equivalent to a dial-in number that can specify a called terminal by a dial number from the calling party is used at a relatively low contract fee. Can do.
[0026]
Next, the ISDN network 60 of the ISDN terminal apparatus 1 according to the present embodiment, which is compatible with such an incoming call ringing function and has a contract for use of the incoming call ringing function with an operator of the ISDN network, and A connection form to the LAN 50 is shown in FIG.
[0027]
In FIG. 1, an ISDN terminal device 1 is connected to an ISDN network 60 and is connected to the LAN 50 as a network terminal on the LAN 50. On the LAN 50, PCs (personal computers) such as PCs 20a, 20b, and 20c are connected as other network terminals. The email addresses of the PCs 20a, 20b, and 20c are the email addresses “aaa@xxx.co.jp”, “bbb@xxx.co.jp”, and “ccc@xxx.co.jp”, respectively. The ISDN terminal device 1 and each PC 20 exchange e-mails via a mail server device 30 on the LAN 50 using an e-mail protocol such as SMTP protocol or POP protocol over a network protocol such as TCP / IP protocol.
[0028]
FIG. 2 shows a block configuration of the ISDN terminal device 1.
[0029]
In the figure, an ISDN terminal device 1 includes a system control unit 2, ROM 3, RAM 4, scanner 5, plotter 6, operation display unit 7, LAN interface 8, LAN control unit 9, ISDN interface 10, D channel control unit 11, B A channel control unit 12 and a system bus 13 are included.
[0030]
The system control unit 2 is a microcomputer that controls each unit of the apparatus while using the RAM 4 as a work area in accordance with a control program written in the ROM 3.
[0031]
As described above, the ROM 3 is a read-only memory in which a control program for the system control unit 2 to control each unit of the apparatus is stored.
[0032]
The RAM 4 is a random access memory used as a work area for the system control unit 2 as described above. Note that the RAM 4 is backed up by a backup circuit (not shown), and the stored contents are retained even when the apparatus power is shut off.
[0033]
The scanner 5 is for obtaining image information in which an original is a transmission document. The plotter 6 records and outputs the received document on recording paper.
[0034]
The LAN interface 8 is a physical interface with the LAN 50. The LAN control unit 9 controls the LAN interface 8 to control data exchange through a predetermined network protocol such as TCP / IP via the LAN 50.
[0035]
The ISDN interface 10 is a physical interface with the ISDN network 60. The D channel control unit 11 performs ISDN call control via the ISDN interface 10. The B channel control unit 12 controls data exchange on the B channel established by the D channel control unit 11. The system bus 12 is a signal line for the above units to exchange data.
[0036]
Next, embodiments of the present invention will be described separately for the first, second and third embodiments.
[0037]
First, FIG. 3 shows the storage contents of the RAM 4 common to the first and second embodiments. In the storage area 4a, a notified port number, which is a port number notified at the time of an incoming call, is stored. The received document is stored in the storage area 4b.
[0038]
FIG. 4 shows an incoming call processing procedure common to the first and second embodiments.
[0039]
In this figure, the ISDN terminal device 1 monitors whether or not a call setup message SETUP is received via the ISDN network (No loop of decision 101). When the call setup message SETUP is received (Yes in decision 101), the call is made. The presence or absence of the facility information element of the setup message SETUP is confirmed (process 102). If there is no facility information element (No in decision 103), the call control is performed through the communication path established as in the conventional case. The received document is received, and a normal reception process such as recording on the recording paper by the plotter 6 is performed (process 104), the call disconnection control is performed to release the call (process 105), and the process ends.
[0040]
If it is determined in decision 103 that there is a facility information element (Yes in decision 103), it is determined whether the facsimile information element includes a port number (determination 106). If there is no port number (determination 106). No), call disconnection control is performed to release the call (process 105), and the process ends.
[0041]
If there is a port number in decision 106 (Yes in decision 106), the notified port number notified as the facsimile information element is acquired (process 107), and the acquired notified port number is registered in the table. Is determined (decision 108).
[0042]
Here, in the determination 108, the table checked with the notified port number is the port number / transfer destination setting table 4c shown in FIG. 5 in the first embodiment, and shown in FIG. 7 in the second embodiment. The port number / transfer enable / disable setting table 4d will be described later in detail.
[0043]
When the acquired port number to be notified is not registered in the table in the determination 108 (No in the determination 108), the process proceeds to the normal reception process of the process 104 assuming that the transfer destination is not specified.
[0044]
When the acquired notified port number is registered in the table in the determination 108 (Yes in determination 108), the notified port number acquired in the processing 107 is shown in FIG. 3 assuming that the transfer destination is designated. As shown in FIG. 3, the received document is received through the communication path established by performing call control and stored in the storage area 4b of the RAM 4 as shown in FIG. The document reception / storage process is performed (process 110), the call disconnection control is performed, and the call is released (process 111).
[0045]
As described above, when the port number registered in the table is notified, that is, when the transfer destination is designated, the process related to the transfer is further performed after the process 111.
[0046]
The processing related to the transfer is the processing procedure shown in FIG. 6 in the first embodiment, and the processing procedure shown in FIG. 9 in the second embodiment.
[0047]
In the first embodiment, as described above, the table that is collated with the notified port number in the determination 108 of FIG. 4 is the port number / transfer destination setting table 4c that is preset and stored in the RAM 4 shown in FIG. is there. The contents of the table 4c are registered and changed in advance by interactive input from the operation display unit 7, online registration from another PC 20 via the LAN 50, or the like.
[0048]
In FIG. 5, the port number / transfer destination setting table 4c is one in which one or a plurality of transfer destinations and types of the transfer destinations are set in correspondence with each of the port numbers 1 to 3. It is. As the destination type, various types of “own device output” with a value “0”, “network” with a value “1”, or “ISDN” with a value “2” are defined.
[0049]
The value “0” “own device output” indicates that the received document is recorded on the recording paper by the plotter 6 at a special transfer destination. A value “1” “network” indicates that the received document is transferred to each PC 20 via the LAN 50 by e-mail. The value “2” “ISDN” indicates that the received document is transferred to another ISDN terminal on the ISDN network 60 via the ISDN network 60. Note that the value “0” “own device output” is not explicitly registered in the table 4c, but is not registered in the table 4c. You may do it.
[0050]
The current setting in the table 4c shown in FIG. 5 is that the transfer destination corresponding to the port number 1 is not registered, and the transfer destination type is set to “own device output”. Further, the forwarding addresses corresponding to the port number 2 are the mail addresses “aaa@xxx.co.jp” and “bbb@xxx.co.jp”. The forwarding destinations corresponding to the port number 3 are ISDN dial numbers “03-2222-4444” and “03-5555-7777”. Needless to say, “network” and “ISDN” may be mixed as transfer destination types corresponding to the same port number.
[0051]
In the first embodiment, after such a port number / transfer destination setting table 4c is set in advance, the processing procedure related to the transfer shown in FIG. 6 is performed following the processing 111 of FIG.
[0052]
6, first, the notified port number stored in the process 109 in FIG. 4 is checked against the table 4c in FIG. 5 (process 201), and the corresponding transfer destination type is confirmed (process 202). As a result of the confirmation, if the transfer destination type is “0”, that is, “own device output” (Yes in decision 203), the received document stored in the processing 110 is read out by the plotter 6. Recording is output on recording paper (process 204), and the process is terminated.
[0053]
As a result of the confirmation, if the transfer destination type is other than “0” and the transfer destination is “network” or “ISDN” (No in decision 203), the corresponding transfer destination type is “network” or “ISDN”. The received document stored by the processing 110 is transferred to the corresponding email address via the network (LAN 50) by an email in a predetermined format such as MIME format, or ISDN. To the corresponding dial number and transfer it (step 205).
[0054]
Note that the received document transferred in the process 205 may be recorded on a recording sheet by the plotter 6 so that the contents of the transferred document can be confirmed.
[0055]
The contents of the document received and transferred by the ISDN terminal device 1 are not limited to text data and image information, and may be various binary data such as audio data. The present invention is limited by the contents of the document. is not. Therefore, the present invention is not limited by the content of the document exchanged on the B channel via the ISDN network 60 and the protocol of document transmission by the ISDN terminal device 1, and various G4 facsimile protocols and the like can be selected depending on the content of the document. Needless to say, this protocol is applicable.
[0056]
As described above, according to the first embodiment, the calling party simply calls the dial number corresponding to the desired transfer destination, and the ISDN terminal device on the called side sends the port number notified at the time of the incoming call to the port number. The received document can be transferred to a transfer destination according to the transfer destination. For example, a transfer function can be realized even for a terminal that can specify a destination ISDN terminal only by a dial number, such as a G3 facsimile apparatus in which a caller is connected to a PSTN. Will be able to.
[0057]
Next, in the second embodiment, as described above, the table that is collated with the notified port number in the determination 108 of FIG. 4 is the port number / transfer enable / disable setting previously set and stored in the RAM 4 shown in FIG. It is a table 4d. The contents of the table 4d are registered and changed in advance by interactive input from the operation display unit 7, online registration from another PC 20 via the LAN 50, or the like.
[0058]
In FIG. 7, a port number / transfer enable / disable setting table 4d is a transfer enable / disable setting corresponding to each of the port numbers 1 to 3, and the current setting in the table 4d is a transfer enable / disable corresponding to the port numbers 1 and 3, respectively. Both are set to “impossible” indicating that transfer is not allowed, and the transfer enable / disable setting corresponding to the port number 2 is set to “allow” indicating that transfer is allowed.
[0059]
Further, the transfer destination in the case where the transfer enable / disable setting in the table 4d is “permitted” is stored in the transfer destination setting table 4e shown in FIG.
[0060]
The table 4e is configured by correspondence between each transfer destination designated by a mail address or an ISDN dial number and the type of the transfer destination. The definition of the setting value of the transfer destination type in the table 4e is the same as that shown in FIG.
[0061]
In the second embodiment, after such a port number / transfer enable / disable setting table 4d and transfer destination setting table 4e are set in advance, the processing procedure related to the transfer shown in FIG. Do.
[0062]
9, first, the notified port number stored in the process 109 of FIG. 4 is checked against the table 4d of FIG. 7 (process 301), and the corresponding transfer enable / disable setting is confirmed (process 302). As a result of the confirmation, if the transfer is set to “impossible” (No in decision 303), the received document stored in the process 110 is recorded and output on the recording paper by the plotter 6 as a process for the untransferred document ( Process 305).
[0063]
On the other hand, if it is determined in the determination 203 that the transfer is “permitted” (Yes in the determination 203), whether the type of each transfer destination registered in the table 4e is “network” or “ISDN”. In response, the received document stored in the process 110 is transferred to the corresponding e-mail address via the network (LAN 50) by e-mail in a predetermined format such as MIME format, or the corresponding dial number via ISDN. The call is then transferred (process 205). When there are a plurality of corresponding transfer destinations, transfer processing is performed for each transfer destination.
[0064]
Then, as a process for the transferred document, the received document stored in the process 110 is recorded on the recording paper by the plotter 6 (process 305).
[0065]
The processing for untransferred documents and transferred documents may be erased without doing anything, and whether or not to record on the recording paper by the plotter 6 is set in advance. Processing may be performed according to the above. In that case, untransferred documents and transferred documents can be processed in a form desired by the user.
[0066]
As described above, according to the second embodiment, the caller simply calls the desired dial number, specifies whether or not to transfer the transmission document, and to which transfer destination. become able to.
[0067]
Next, a third embodiment will be described.
[0068]
FIG. 10 shows the storage contents of the RAM 4 in the third embodiment. The storage area 4a stores the notified port number, which is the port number notified at the time of the incoming call, and the storage area 4b receives the reception. The document is stored, and in the storage area 4f, a notified subaddress that is a subaddress that is communication management information at the time of an incoming call is stored.
[0069]
FIG. 11 shows an incoming call processing procedure according to the third embodiment.
[0070]
In this figure, the ISDN terminal device 1 monitors whether or not a call setup message SETUP is received via the ISDN network (No loop of decision 401), and receives the call setup message SETUP (Yes in decision 401), the call. If there is a destination subaddress information element of the setup message SETUP (Yes in decision 402), it is stored as a notified subaddress in the storage area 4f of the RAM 4 (process 403), and the process proceeds to process 404. (No in decision 402), the process simply proceeds to process 404.
[0071]
In process 404, the presence / absence of the facility information element of the call setup message SETUP is confirmed. If the confirmation is detected or there is no facility information element (No in decision 405), the received document is received through the communication path established by performing call control as in the conventional case, and the plotter 6 records the recording paper. Normal reception processing such as recording and output is performed (processing 406), call disconnection control is performed to release the call (processing 407), and the processing ends.
[0072]
If there is a facility information element in decision 405 (Yes in decision 405), it is judged whether or not a port number is included as the facsimile information element (decision 408). If there is no port number (decision 408). No), call disconnection control is performed to release the call (process 407), and the process ends.
[0073]
If there is a port number in decision 408 (Yes in decision 408), the notified port number notified as the facsimile information element is acquired (process 409), and the acquired notified port number is registered in the table. Is determined (decision 410).
[0074]
Here, in the determination 410, the table collated with the notified port number is the port number / subaddress / transfer destination type setting table 4g shown in FIG. 12 in the third embodiment. It will be described later.
[0075]
If the acquired port number to be notified is not registered in the table in the determination 410 (No in the determination 410), the process proceeds to the normal reception process of the process 406 assuming that the transfer destination is not specified.
[0076]
In the determination 410, if the acquired notified port number is registered in the table (Yes in the determination 410), the notified port number acquired in the processing 411 is shown in FIG. As shown in FIG. 10, the received document is received through the communication path established by performing call control and stored in the storage area 4b of the RAM 4 as shown in FIG. The document reception / storage process is performed (process 412), the call disconnection control is performed, and the call is released (process 413).
[0077]
As described above, when the port number registered in the table is notified, that is, when the transfer destination is designated, the process related to the transfer is further performed after the process 413.
[0078]
The process related to the transfer is the process procedure shown in FIG. 13 in the third embodiment.
[0079]
In the third embodiment, as described above, the table that is collated with the notified port number in the determination 410 of FIG. 11 is the port number / subaddress / transfer destination setting table that is preset and stored in the RAM 4 shown in FIG. 4g. The contents of the table 4g are registered and changed in advance by interactive input from the operation display unit 7, online registration from another PC 20 via the LAN 50, or the like.
[0080]
In FIG. 12, the port number / subaddress / transfer destination setting table 4g corresponds to each of the port numbers 1 to 3, and if necessary, one or a plurality of subaddresses, transfer destinations corresponding to the subaddresses, The type of the transfer destination is set. The definition of the transfer destination type is the same as in the case of the table 4c shown in FIG. 5, and the “own device output” of the value “0” is not explicitly registered in the table 4g, but is ported in the table 4g. By not registering the number, only the determination 410 in FIG. 11 may be used.
[0081]
The current setting in the table 4g shown in FIG. 12 is that the subaddress and transfer destination corresponding to the port number 1 are not registered, and the transfer destination type is set to “own device output”. The subaddresses corresponding to the port number 2 are “1111” and “2222”, and the forwarding addresses corresponding to the respective subaddresses are the mail addresses “aaa@xxx.co.jp” and “bbb@xxx.co.jp”. Is. The subaddresses corresponding to the port number 3 are “3333” and “4444”, and the forwarding destinations corresponding to the respective subaddresses are ISDN dial numbers “03-2222-4444” and “03-5555-7777”. is there. Needless to say, “network” and “ISDN” may be mixed as transfer destination types corresponding to the same port number. Needless to say, the number of transfer destinations corresponding to the subaddress corresponding to each port number is not limited to one, but may be plural. In addition, a transfer destination may be directly set in association with a port number without registering a subaddress. In this case, the transfer destination is specified only by the port number.
[0082]
In the third embodiment, after such a port number / subaddress / transfer destination setting table 4g is set in advance, the processing procedure related to the transfer shown in FIG. 13 is performed following the processing 413 in FIG.
[0083]
13, first, the notified port number stored in the process 411 of FIG. 11 is checked against the table 4g of FIG. 12 (process 501), and the corresponding transfer destination type is confirmed (process 502). As a result of the confirmation, if the transfer destination type is “0”, that is, “own device output” (Yes in decision 503), the received document stored in the process 412 is read out by the plotter 6. Recording is output on recording paper (process 504), and the process is terminated.
[0084]
As a result of the confirmation, if the transfer destination type is other than “0” and the transfer destination is “network” or “ISDN” (No in decision 503), the notified port number stored in the process 411, The notified subaddress stored in the process 403 is checked against the table 4g to determine whether a transfer destination corresponding to the combination of the notified port number and the notified subaddress is registered in the table 4g (determination 506).
[0085]
If the corresponding transfer destination is not in the table 4g (No in decision 506), the process proceeds to process 504 as the process for the received document whose transfer destination is unknown, and the received document stored in process 412 is read out by the plotter 6. Record output on recording paper.
[0086]
If the corresponding transfer destination is registered in the table 4g (Yes in decision 506), the information is stored by the process 412 depending on whether the type of the corresponding transfer destination is “network” or “ISDN”. The received document is transferred to the corresponding e-mail address via the network (LAN 50) by e-mail in a predetermined format such as MIME format, or the call is transferred by calling the corresponding dial number via ISDN ( Processing 507). When there are a plurality of corresponding transfer destinations, transfer processing is performed for each transfer destination.
[0087]
Note that the received document transferred in the process 507 may be recorded on a recording sheet by the plotter 6 so that the contents of the transferred document can be confirmed.
[0088]
As described above, according to the third embodiment, since the transfer destination can be designated by a combination of the subaddress designated on the calling side and the port number corresponding to the dialed number, the calling side, for example, A specific forwarding destination group can be specified by the dialing number to be called, and a forwarding destination can be designated in such a manner that a specific forwarding destination of the forwarding destination group is designated by the subaddress. The number of transfer destinations can be greatly increased by extending the transfer destination designation with port numbers limited to three.
[0089]
In addition to the destination subaddress added to the call setting message, other information elements such as high or low layer consistency, user user information, and the like are combined with the port number to specify the transfer destination. It is also possible.
[0090]
Thus, according to the present embodiment, various transfer functions can be realized by using the incoming call ringing function.
[0091]
In this embodiment, the transfer destination of the received document is another ISDN terminal device on the ISDN network or another PC 20 on the LAN. However, the transfer destination is not limited to this, and a network on the Internet is also available. Others such as a terminal, a terminal on a PSTN or a dedicated line may be used, and the present invention is not limited by the transfer form and transfer protocol of the received document.
[0092]
【The invention's effect】
According to the first aspect of the invention, by using the incoming call ringing function provided by the ISDN network, the transfer destination designated by the dial number on the caller side is recognized as the port number and the corresponding transfer destination. Thus, it is possible to transfer the received document, and the transfer function can be realized at a relatively low line contract cost.
[0093]
According to the invention according to claim 2, the port number notified at the time of the incoming call can be compared with the port number / transfer destination setting table to identify the corresponding transfer destination, and the received document can be transferred to the specified transfer destination. From the calling side, it is possible to realize a transfer function that allows a transfer destination to be easily specified by a dial number at a relatively low line contract cost.
[0094]
According to the third aspect of the present invention, the caller can simply call a desired dial number by setting in advance whether transfer is possible and transfer destination for each port number. It is possible to specify whether transfer is performed or not, and to which transfer destination, and it is possible to obtain an effect that a highly convenient transfer function can be realized at a relatively low line contract cost.
[0095]
According to the invention according to claim 4, an incoming call ringing function provided by the ISDN network and a notification function of various information elements such as higher layer compatibility and lower layer compatibility are used in combination to make a call. The transfer destination specified by the dial number and the predetermined information element on the side can be specified based on the combination of the port number and the predetermined information element, and the received document can be transferred to the specified transfer destination. As a result, it is possible to specify the transfer destinations hierarchically and to specify the transfer destination exceeding the limit of the number of port numbers.
[0096]
According to the invention according to claim 5, by using a combination of the incoming call ringing function provided by the ISDN network and the called subaddress notification function, the forwarding destination designated by the dialed number and the subaddress on the calling side, The received document can be transferred to the specified transfer destination specified based on the combination of the port number and subaddress, and the caller can specify the transfer destination hierarchically by number and exceed the limit of the number of port numbers The effect that the transfer destination can be specified is obtained.
[0097]
According to the invention of claim 6, the port number and subaddress notified at the time of the incoming call are compared with the port number / subaddress / transfer destination setting table to identify the corresponding transfer destination, and the received document is sent to the specified transfer destination. The transfer function that allows the caller to easily and hierarchically specify transfer destinations by a combination of dial numbers and subaddresses can be realized at a relatively low line contract cost.
[Brief description of the drawings]
FIG. 1 is a diagram showing a connection form of an ISDN terminal apparatus according to an embodiment of the present invention to an ISDN network and a LAN.
FIG. 2 is a diagram showing a block configuration of an ISDN terminal apparatus according to an embodiment of the present invention.
FIG. 3 is a diagram showing contents stored in a RAM according to the first embodiment and the second embodiment of the ISDN terminal apparatus according to the embodiment of the present invention;
FIG. 4 is a flowchart showing a processing procedure common to the first and second embodiments in the ISDN terminal apparatus according to the embodiment of the present invention.
FIG. 5 is a diagram showing a port number / transfer destination setting table according to the first embodiment.
FIG. 6 is a flowchart showing a processing procedure according to the first embodiment performed subsequent to the common processing procedure shown in FIG. 4;
FIG. 7 is a view showing a port number / transfer enable / disable setting table according to the second embodiment.
FIG. 8 is a diagram showing a transfer destination setting table according to the second embodiment.
FIG. 9 is a flowchart showing a processing procedure according to the second embodiment performed subsequent to the common processing procedure shown in FIG. 4;
FIG. 10 is a diagram showing stored contents of a RAM according to a third of the ISDN terminal device according to the embodiment of the present invention;
FIG. 11 is a flowchart showing a processing procedure in the third embodiment of the ISDN terminal device according to the embodiment of the present invention;
FIG. 12 is a view showing a port number / subaddress / transfer destination setting table according to the third embodiment.
FIG. 13 is a flowchart showing the processing procedure in the third embodiment in the ISDN terminal device according to the embodiment of the present invention, which is performed subsequent to the processing procedure shown in FIG. 11;
FIG. 14 is a diagram for explaining an incoming call ringing function provided by the ISDN network;
FIG. 15 is a diagram for explaining an incoming call ringing function provided by the ISDN network together with FIG. 14;
[Explanation of symbols]
1 ISDN terminal equipment
2 System controller
3 ROM
4 RAM
4a Port number to be notified
4b Received document
4c Port number / forwarding destination setting table
4d Port number / transfer availability setting table
4e Transfer destination setting table
4f Sub-address to be notified
4g Port number / sub address / transfer destination setting table
5 Scanner
6 Plotter
7 Operation display
8 LAN interface
9 LAN controller
10 ISDN interface
11 D channel controller
12 B channel controller
13 System bus
20a, 20b, 20c PC (personal computer)
30 Mail server device
50 LAN
60 ISDN network

Claims (6)

In an ISDN terminal device connected to an ISDN network and performing communication via the ISDN network,
Analyzing the facility information added to the call setup message received at the time of the incoming call, and obtaining the port number notified based on the incoming call ringing function provided by the ISDN network; An ISDN terminal device comprising: a received document transfer unit that transfers a received document received by communication to a transfer destination device specified by the port number acquired by the port number acquisition unit. A port number / destination setting table in which each port number and transfer destination identification information are stored in association with each other in advance, and the received document transfer unit includes the port number acquired by the port number acquisition unit; 2. The ISDN terminal apparatus according to claim 1, wherein the received document is transferred to a transfer destination specified by collating with a destination setting table. The received document transfer means further includes a port number / transfer enable / disable setting table in which each port number and transfer enable / disable setting information are stored in association with each other, and a transfer destination set table in which a transfer destination is set and stored in advance. When the port number acquired by the number acquisition means is checked against the port number / transfer enable / disable setting table, and the corresponding transfer enable / disable setting is a transfer enable setting, the transfer set in the transfer destination setting table The ISDN terminal apparatus according to claim 1, wherein the received document is transferred first. Information element acquisition means for acquiring a predetermined information element added to a call setting message received at the time of the incoming call, wherein the received document transfer means includes the port number acquired by the port number acquisition means, and the information element 2. The ISDN terminal apparatus according to claim 1, wherein the received document is transferred to a transfer destination apparatus specified by the information element acquired by the acquisition means. 5. The ISDN terminal apparatus according to claim 4, wherein the predetermined information element acquired by the information element acquisition means is called subaddress information. Each port number further includes a port number / subaddress / transfer destination setting table in which a subaddress and transfer destination identification information corresponding to the subaddress are stored in advance, and the received document transfer means is acquired by the port number acquisition means The received document is transferred to a transfer destination specified by comparing a port number and a destination subaddress acquired by the subaddress acquisition means with the port number / subaddress / transfer destination setting table. The ISDN terminal device according to claim 5.

Images