JP2004320381A - Method and program for public network connection - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automatically terminate a call to an extension terminal different from the mode at originating and automatically identify a communication party at the return termination side. <P>SOLUTION: Originate side extension numbers c related to reporting originate side numbers d and originator identification numbers b, i.e., IDs of originators related to extension numbers f of extension terminals usually used by the originators are previously stored in a memory. The originate side extension numbers c, receive side public network terminal numbers e, and originator identification numbers b, are related and stored in the memory at the time of an originating operation by the originators. The originate side extension number c at the time of the originating operation by the originator is converted to the reporting originate side number d, and sends toward a public network. At terminating as a return to the originating, the reporting originate side number d is converted to the originate side extension number c and the originator identification number b corresponding to the converted originate side extension number c, and the receive side public network terminal number e is retrieved. The retrieved originator identification number b is converted to an extension number f, and a call is terminated at the extension terminal of the converted extension number f. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a public network connection which facilitates return calling in a private branch exchange accommodating an extension.
[0002]
[Prior art]
Conventionally, this type of public network connection is provided with a destination automatic routing table in which the relationship between a caller identifier and a destination terminal number is registered, and based on the caller identifier received from the public network, the destination automatic routing table is created. One or more arbitrary destination terminal numbers are searched for by referring to the terminal, and the terminal having the destination terminal number is preferentially received (refer to Patent Document 1).
[0003]
Also, at the time of an incoming call, the caller identification information and the user user information are stored, and at the time of outgoing call, the caller identification information and the user user information are output in a list, and the caller identification information or the user user information selected from the list is added to the information. A technique for automatically transmitting a call to a line based on any of the included numbers is known (Prior Art 2, for example, see Patent Document 2).
[0004]
[Patent Document 1]
JP-A-10-65808 (pages 1 to 7, FIG. 5)
[Patent Document 2]
JP-A-5-14509 (pages 1-5, FIG. 4)
[0005]
[Problems to be solved by the invention]
However, in the above-described prior art 1, since the relationship between the caller identifier and the destination terminal number needs to be registered in the registered destination automatic routing table in advance, it takes time and is inflexible. There is one problem.
[0006]
Further, for example, when a call is made to the extension from the public network by the public terminal by dialing the source telephone number notified to the public network by the extension A, the received number is converted into only the extension A number. If the operator A using the extension A makes a call to the public network from the extension B, the return call from the public network will call the extension B, and the second call that the extension A cannot be called. There is also a problem.
[0007]
Further, for example, when the operator A who normally uses the extension A makes a call from the extension A to the public network, a return call from the public network is sent to the operator B who has responded to the received extension A to the extension B. There is also a third problem that it is not possible to notify that the transmission of A is the operator A.
[0008]
Further, in the prior art 2, if the number of the terminal asking for a return is indicated in the user user information, by performing an operation of selecting the user user information from the output list at this time, a different call from the time of the transmission is performed. It is assumed that even a terminal can contact a desired caller. However, there is a first problem that since an operation is required at the time of turning back, it takes time and error may occur.
[0009]
Further, for example, when the operator A who normally uses the extension A makes a call from the extension A to the public network, a return call from the public network is sent to the operator B who has responded to the received extension A to the extension B. There is also a second problem that it is not possible to notify that the transmission of A is the operator A.
[0010]
A first object of the present invention is to provide a public network connection method and a public network connection program capable of automatically performing an incoming call to an extension terminal different from the time of calling.
[0011]
A second object of the present invention is to provide a public network connection method and a public network connection program capable of automatically specifying a call partner of a return call destination from a public terminal.
[0012]
[Means for Solving the Problems]
In the first aspect of the present invention, a source extension number c, which is an extension number of an extension terminal on which a caller performs a calling operation, and a notification source number d, which is an extension number for the public network of the source extension number c, are provided. The association and the caller identification number b, which is the ID of the caller, and the extension number f of the extension terminal normally used by the caller are stored in advance in the memory in association with each other. Further, at the time of a calling operation by the caller, the extension number c of the caller, the destination public network terminal number e which is the other party's public terminal number, and the caller identification number b are stored in the memory in association with each other. Then, the sender extension number c at the time of the calling operation by the caller is converted into the notification sender number d, and the call is transmitted to the public network.
[0013]
At the time of receiving a return call, the caller ID d for notification is converted into a caller extension c, and a caller identification number b corresponding to the converted caller extension c and the destination public network terminal number e is searched. . The searched caller identification number b is converted into an extension number f, and the call is received at the extension terminal having the converted extension number f.
[0014]
In the second aspect of the present invention, a source extension number c, which is an extension number of an extension terminal on which a caller performs a calling operation, and a notification source number d, which is an external number of the source extension number c for a public network, are used. Correspondence, and a caller identification number b, which is an ID of the caller, and an extension number f of an extension terminal normally used by the caller are stored in a memory in advance in association with each other. Further, at the time of a calling operation by the caller, the notification source number d, the destination public network terminal number e which is the other party's public terminal number, and the caller identification number b are stored in the memory in association with each other. Then, the sender extension number c at the time of the calling operation by the caller is converted into the notification sender number d, and the call is transmitted to the public network.
[0015]
When an incoming call is returned in response to a call, a caller identification number b corresponding to the notification source number d and the destination public network terminal number e is searched. The searched caller identification number b is converted into an extension number f, and the call is received at the extension terminal having the converted extension number f.
[0016]
According to the third aspect of the present invention, the source extension number c, which is the extension number of the extension terminal on which the caller performs the calling operation, and the notification source number d, which is the extension number of the source extension number c for the public network, are used. Correlation, and a caller identification number b, which is the ID of the caller, and a voice guidance g for the caller are stored in a memory in advance in association with each other. Further, at the time of a calling operation by the caller, the extension number c of the caller, the destination public network terminal number e which is the other party's public terminal number, and the caller identification number b are stored in the memory in association with each other. Then, the sender extension number c at the time of the calling operation by the caller is converted into the notification sender number d, and the call is transmitted to the public network.
[0017]
At the time of receiving a return call, the caller ID d for notification is converted into a caller extension c, and a caller identification number b corresponding to the converted caller extension c and the destination public network terminal number e is searched. . Then, a call is received at the extension terminal of the converted source extension number c, and when the extension terminal responds, the voice guidance g corresponding to the searched caller identification number b is played to designate the called party.
[0018]
According to the fourth aspect of the present invention, the source extension number c, which is the extension number of the extension terminal on which the caller performs the calling operation, and the notification source number d, which is the extension number of the source extension number c for the public network, are used. Correlation, and a caller identification number b, which is the ID of the caller, and a voice guidance g for the caller are stored in a memory in advance in association with each other. Further, at the time of a calling operation by the caller, the notification source number d, the destination public network terminal number e which is the other party's public terminal number, and the caller identification number b are stored in the memory in association with each other. Then, the sender extension number c at the time of the calling operation by the caller is converted into the notification sender number d, and the call is transmitted to the public network.
[0019]
When an incoming call is returned to the call, a caller ID number b corresponding to the notification source number d and a destination public network terminal number e is searched, and the notification source number d is converted into a source extension number c. . Then, a call is received at the extension terminal of the converted source extension number c, and when the extension terminal responds, the voice guidance g corresponding to the searched caller identification number b is played to designate the called party.
[0020]
As described above, according to the present invention, the source extension number and the extension number bound to the caller identification number are separated, and the two are associated with each other by the notification source, the destination public terminal number, and the caller identification number. Therefore, it is possible to automatically perform an incoming call to an extension terminal different from that at the time of calling.
[0021]
In addition, since the caller ID number and the extension number have a one-to-one correspondence or voice guidance for the caller ID number is provided, the call destination of the return call from the public terminal is automatically specified. Can be.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the drawings.
[0023]
FIG. 1 is a block diagram showing the configuration of an ISDN public network connection system according to the present invention. 4 are connected. Although illustration is omitted, a portable telephone, a PHS, a general household telephone contracted with a number display, and other ISDN public networks are connected to the public network 4, and other ISDN public networks are the same as those shown in the figure. May be connected to another private branch exchange to which a plurality of extension terminals are connected. The private branch exchange 1 includes a communication path control device 10, a central processing unit 11, and a storage device 12.
[0024]
[First embodiment]
The storage device 12 includes a caller identification number memory 121, a caller identification information memory 122, a notification number information memory 123, a first public network transmission history information memory 124, and an extension designation information memory 126.
[0025]
As shown in FIG. 2, the caller identification number memory 121 stores in advance a caller identification number notification special number a, which is a number for specifying the present service described below.
[0026]
As shown in FIG. 3, the caller identification information memory 122 stores in advance a caller identification number b, which is the ID of a caller transmitted from the extension terminal 2. A caller who wants to receive the service needs to register the caller identification number b in the caller identification information memory 122. FIG. 3 shows that the caller identification numbers b of the callers A to X are stored.
[0027]
As shown in FIG. 4, the notification number information memory 123 previously stores information in which the extension telephone number (source extension number c) of the extension terminal 2 is associated with the notification source number d. The notification source number d means an external telephone number (usually having a large number of digits) corresponding to the source extension number c (usually with a small number of digits), and is used for notifying the public network 4. is there.
[0028]
The first public network transmission history information memory 124 shown in FIG. 5 stores a caller identification number b, a source extension number c, and a destination public terminal telephone number every time a call is received from the extension terminal 2 for enjoying the service. The information associated with e is stored. The private branch exchange 1 can recognize the source extension number c when the extension terminal 2 makes a call. The caller dials the caller identification number b and the call destination public terminal telephone number e from the extension terminal 2 when making a call.
[0029]
The extension designation information memory 126 shown in FIG. 7 stores an extension number f for each caller identification number b. The extension number f is the extension number of the extension terminal 2 normally used by the caller, and does not always match the extension number c of the extension terminal 2 used when making a call.
[0030]
Now, when the extension terminal 2A on one side (referred to as side A) of the public network 4 talks with the extension terminal 2B on the other side (referred to as side B) (not shown), an extension originating operation and an incoming call from the public network are performed. The operation will be described with reference to FIGS. 9 and 10, respectively.
[0031]
The caller on the A side has a service number (first dial number) for specifying the service content, a caller identification number (second dial number) as an ID of the caller, and a destination public terminal number (third number) for specifying the extension terminal 2B. Dial number). Then, the private branch exchange 1 on the A side executes a process as shown in FIG.
[0032]
First, the caller identification number notification special number a is read from the caller identification number memory 121 (step A1 in FIG. 9), and the caller identification number notification special number a is compared with the first dial number dialed by the extension terminal 2A. (Step A2). If the results are equal, the service has been called.
[0033]
Subsequently, the caller identification information memory 122 is searched (step A3), and it is checked whether any registered caller identification number b matches the second dial number (step A4). In this way, it is determined whether or not the dialer is a target for receiving the service.
[0034]
If there is a caller identification number b that matches the second dial number, it is checked whether the third dial number (destination public terminal number) is an ISDN public connection number (step A5). What kind of destination public terminal number corresponds to the ISDN public connection number can be determined by a known method.
[0035]
When the third dial number is an ISDN public connection number, the source extension number recognized by the private branch exchange 1 (extension number of the extension terminal 2A), the destination public terminal number (third dial number), and the caller identification number (The second dial number) and stores it in the first public network transmission history memory 124 (step A6).
[0036]
Subsequently, the notification number information memory 123 is searched using the transmission source extension number (the extension number of the extension terminal 2A) as a key, and the notification transmission source number d corresponding to the matching one is read (step A7). This is to convert the source extension number to the notification source number d.
[0037]
Finally, the converted notification source number d is transmitted to the ISDN public network 3 together with the destination public terminal number (third dial number) (step A8). This transmission is transmitted to the private branch exchange on the B side and the extension terminal 2B via the ISDN public network 3 and the public network 4.
[0038]
In the above description, if the determination in steps A1 to A3 and step A5 is negative, the process jumps to another transmission process outside this service. This is the same in each of the flowcharts shown in FIGS.
[0039]
If the extension terminal 2B that has received the call from the extension terminal 2A can immediately respond, the communication is performed as it is. When the extension terminal 2B cannot respond immediately because the busy state or the absence of the responder, the private branch exchange 1 on the side A stops transmitting to the ISDN public network 3 and performs the following processing.
[0040]
When the extension terminal 2B can respond, the caller of the extension terminal 2B corresponding to the destination public terminal number dials the notification source number d notified from the extension terminal A5 to make a call. When this call arrives from the ISDN public network 3 to the private branch exchange 1 on the side A, the private branch exchange 1 executes processing as shown in FIG.
[0041]
First, using the dialed notification source number d as a key, the notification number information memory 123 is searched to read the source extension number c corresponding to the matched one (step B1 in FIG. 10). This is for converting the notification source number to the source extension number c, which is the reverse of the conversion in step A7 in FIG.
[0042]
Subsequently, a call is transmitted from the first public network transmission history information memory 124 using the source extension number c read from the notification number information memory 123 and the destination public terminal number notified from the B side as keys. The user identification information b is read (step B2). The caller identification information memory 122 is searched using the read caller identification number b as a key (step B3).
[0043]
As a result, if it is found that the caller identification number b read from the first public network transmission history information memory 124 is registered in the caller identification information memory 122 (step B4), the caller identification number b is changed. The extension number f is read from the extension designation information memory 126 as a key (step B5). This converts the caller identification number b into an extension number f.
[0044]
Finally, the call from the B side is received by the extension terminal having the extension number f (step B6). In this case, as described above, the extension number f does not always match the source extension number c. Therefore, even if a caller makes a call from an extension terminal 2 (source extension number c) different from the extension terminal 2 (extension number f) that the user normally uses, the caller receives a call at the extension terminal 2 (extension number f) that is normally used. can do.
[0045]
In this embodiment, the caller identification number and extension number have a one-to-one correspondence. Therefore, as described above, if the B side dials the notification source number d without paying attention to the called party, the called party on the A side can be specified by receiving a call to the extension number on the A side.
[0046]
[Second embodiment]
The second embodiment is a minor change of the first embodiment, and uses a second public network transmission history information memory 125 shown in FIG. 6 instead of the first public network transmission history information memory 124 shown in FIG. Are different. Therefore, the storage device 12 comprises a caller identification number memory 121, a caller identification information memory 122, a notification number information memory 123, a second public network transmission history information memory 125, and an extension designation information memory 126.
[0047]
The second public network transmission history information memory 125 associates the caller identification number b, the notification source number d, and the destination public terminal telephone number e each time a call is received from the extension terminal 2 for enjoying the service. The stored information is stored. The notification source number d can be obtained by searching the notification number information memory 123 (FIG. 4) using the source extension number c that can be recognized by the private branch exchange 1 when a call is transmitted from the extension terminal 2. In addition, the caller dials the caller identification number b and the destination public terminal telephone number e from the extension terminal 2 when making a call.
[0048]
Operationally, the order of steps A6 and A7 in FIG. 9 showing the extension calling operation is reversed, and the order of step B1 in FIG. 10 showing the receiving operation from the public network is lowered.
[0049]
Now, a case will be described where an extension terminal 2A (referred to as A side) on one side (referred to as A side) of the public network 4 communicates with an extension terminal 2B (referred to as B side), not shown.
[0050]
The caller on the A side has a service number (first dial number) for specifying the service content, a caller identification number (second dial number) as an ID of the caller, and a destination public terminal number (third number) for specifying the extension terminal 2B. Dial number). Then, the private branch exchange 1 on the A side executes a process as shown in FIG.
[0051]
First, the caller identification number notification special number a is read from the caller identification number memory 121 (step C1 in FIG. 11), and the caller identification number notification special number a is compared with the first dial number dialed by the extension terminal 2A. (Step C2). If the results are equal, the service has been called.
[0052]
Subsequently, the caller identification number memory 122 is searched (step C3), and it is checked whether any registered caller identification number b matches the second dial number (step C4). In this way, it is determined whether or not the dialer is a target for receiving the service.
[0053]
If there is a caller identification number b that matches the second dial number, it is checked whether the third dial number (destination public terminal number) is an ISDN public connection number (step C5). What kind of destination public terminal number corresponds to the ISDN public connection number can be determined by a known method.
[0054]
If the third dial number is an ISDN public connection number, the notification number information memory 123 is searched using the transmission source extension number (the extension number of the extension terminal 2A) as a key, and the notification transmission corresponding to the matching one is performed. The source number d is read (step C6). This is to convert the source extension number to the notification source number d.
[0055]
Subsequently, the converted notification source number d, destination public terminal number (third dial number) and caller identification number (second dial number) are stored in the second public network transmission history memory 125 in association with each other. (Step C7).
[0056]
Finally, the converted notification source number d is transmitted to the ISDN public network 3 together with the destination public terminal number (third dial number) (step C8). This call is transmitted to the private branch exchange on the B side and the extension terminal 2B via the ISDN public network 3 and the public network 4.
[0057]
If the extension terminal 2B that has received the call from the extension terminal 2A can immediately respond, the communication is performed as it is. If the extension terminal 2B cannot respond immediately because it is busy or absent, the private branch exchange 1 on the A side stops transmitting to the ISDN public network 3.
[0058]
When the extension terminal 2B can respond, the caller of the extension terminal 2B corresponding to the destination public terminal number dials the notification source number d notified from the extension terminal A5 to make a call. When this call arrives from the ISDN public network 3 to the private branch exchange 1 on the side A, the private branch exchange 1 executes a process as shown in FIG.
[0059]
First, the caller identification number b is read from the second public network transmission history information memory 125 using the notification source number dialed from the B side and the destination public terminal number notified from the B side as keys. (Step D1 in FIG. 12). Then, the caller identification information memory 122 is searched using the read caller identification number b as a key (step D2).
[0060]
As a result, if it is found that the caller identification number b read from the second public network transmission history information memory 125 is registered in the caller identification information memory 122 (step D3), the notification sender number is set as a key. First, a search is made in the notification number information memory 123 to read out the source extension number c corresponding to the matching one (step D4). This converts the notification source number d into a source extension number c.
[0061]
Subsequently, the extension number f is read from the extension designation information memory 126 using the caller identification number b as a key (step D5). This converts the caller identification number b into an extension number f.
[0062]
Finally, the incoming call from the B side is received by the extension terminal having the extension number f (step D6). In this case, as described above, the extension number f does not always match the source extension number c. Therefore, even if a caller makes a call from an extension terminal 2 (source extension number c) different from the extension terminal 2 (extension number f) that the user normally uses, the caller receives a call at the extension terminal 2 (extension number f) that is normally used. can do.
[0063]
Also in this embodiment, the caller identification number and the extension number have a one-to-one correspondence. Therefore, as described above, if the B side dials the notification source number d without paying attention to the called party, the called party on the A side can be specified by receiving a call to the extension number on the A side.
[0064]
[Third embodiment]
The third embodiment is an extension of the first embodiment, and uses a voice guidance information memory 127 instead of the extension designation information memory 126. Therefore, the storage device 12 comprises a caller identification number memory 121, a caller identification information memory 122, a notification number information memory 123, a first public network transmission history information memory 124, and a voice guidance information memory 127. The voice guidance information memory 127 records voice guidance for each caller identification number, as shown in FIG.
[0065]
There is no difference in extension calling operation. Accordingly, FIG. 13 shows a flowchart in which only the reference numerals in FIG. 9 are changed, but the description thereof will be omitted to avoid duplication. Also, the end of the process (steps B5 and B6 in FIG. 10) differs for the incoming operation from the public network. Therefore, FIG. 14 corresponding to FIG. 10 will be described.
[0066]
If the extension terminal 2B that has received the call from the extension terminal 2A can immediately respond, the communication is performed as it is. If the extension terminal 2B cannot respond immediately because it is busy or absent, the private branch exchange 1 on the A side stops transmitting to the ISDN public network 3.
[0067]
When the extension terminal 2B can respond, the caller of the extension terminal 2B corresponding to the destination public terminal number dials the notification source number d notified from the extension terminal A5 to make a call. When this call arrives from the ISDN public network 3 to the private branch exchange 1 on the side A, the private branch exchange 1 executes processing as shown in FIG.
[0068]
First, using the dialed notification source number d as a key, the notification number information memory 123 is searched, and the source extension number c corresponding to the matched one is read (step F1 in FIG. 14). This is to convert the notification source number to the source extension number c, which is the reverse of the conversion in step E7 in FIG.
[0069]
Subsequently, a call is transmitted from the first public network transmission history information memory 124 using the source extension number c read from the notification number information memory 123 and the destination public terminal number notified from the B side as keys. The user identification number b is read (step F2). The caller identification information memory 122 is searched using the read caller identification number b as a key (step F3).
[0070]
As a result, if it is found that the caller identification number b read from the first public network transmission history information memory 124 is registered in the caller identification information memory 122 (step F4), the extension of the caller extension number c is obtained. The terminal 2A receives a call (step F5). Then, when the extension terminal 2A of the source extension number c responds, the voice guidance g is read from the voice guidance information memory 127 using the caller identification number b as a key, and the voice guidance is played (step F6). The name of the called party can be specified by designating the voice guidance. The called party can perform a hooking operation and establish a communication state with the B-side public terminal.
[0071]
According to this embodiment, even if the caller identification number and the extension number do not have a one-to-one correspondence, if the B side dials the notification source number d without being aware of the called party, the A side will An incoming call is received at the extension terminal, from which the callee on the A side can be identified by voice guidance.
[0072]
[Fourth embodiment]
The fourth embodiment is an extension of the second embodiment, and uses a voice guidance information memory 127 instead of the extension designation information memory 126. Therefore, the storage device 12 includes a caller identification number memory 121, a caller identification information memory 122, a notification number information memory 123, a second public network transmission history information memory 125, and a voice guidance information memory 127. The voice guidance information memory 127 records voice guidance for each caller identification number, as shown in FIG.
[0073]
There is no difference in extension calling operation. Therefore, FIG. 15 shows a flowchart in which only the reference numerals in FIG. 11 are changed, but the description is omitted to avoid duplication. Also, the operation of the incoming call from the public network is different at the end of the process (steps D5 and D6 in FIG. 12). Therefore, FIG. 16 corresponding to FIG. 12 will be described.
[0074]
If the extension terminal 2B that has received the call from the extension terminal 2A can immediately respond, the communication is performed as it is. If the extension terminal 2B cannot respond immediately because it is busy or absent, the private branch exchange 1 on the A side stops transmitting to the ISDN public network 3.
[0075]
When the extension terminal 2B can respond, the caller of the extension terminal 2B corresponding to the destination public terminal number dials the notification source number d notified from the extension terminal A5 to make a call. When this call arrives from the ISDN public network 3 to the private branch exchange 1 on the side A, the private branch exchange 1 executes processing as shown in FIG.
[0076]
First, the caller identification number b is read from the second public network transmission history information memory 125 using the notification source number dialed from the B side and the destination public terminal number notified from the B side as keys. (Step H1 in FIG. 16). Then, the caller identification information memory 122 is searched using the read caller identification number b as a key (step H2).
[0077]
As a result, if it is found that the caller identification number b read from the second public network transmission history information memory 125 is registered in the caller identification information memory 122 (step H3), the notification sender number is set as a key. Then, the notification number information memory 123 is searched, and the source extension number c corresponding to the matching one is read out (step H4). This converts the notification source number d into a source extension number c.
[0078]
Then, the extension terminal 2A of the extension number c of the caller is called (step H5), and when the extension terminal 2A responds, the voice guidance g is read out from the voice guidance information memory 127 using the caller identification information b as a key to provide voice guidance. (Step H6). The name of the recipient can be specified by designating the voice guidance. The called party can perform a hooking operation and establish a communication state with the B-side public terminal.
[0079]
According to this embodiment, even if the caller identification number and the extension number do not have a one-to-one correspondence, if the B side dials the notification source number d without being aware of the called party, the A side will An incoming call is received at the extension terminal, from which the callee on the A side can be identified by voice guidance.
[0080]
Note that all the public network connection methods described above can also be performed by executing a program on a computer constituting the private branch exchange 1. These programs cause the computer to perform processing in accordance with the flowcharts shown in FIGS. 9 and 10, FIGS. 11 and 12, FIGS. 13 and 14, or FIGS.
[0081]
【The invention's effect】
A first effect of the present invention is to separate a source extension number and an extension number tied to a caller identification number and associate them with each other by a notification destination source, a destination public terminal number, and a caller identification number. Therefore, it is possible to automatically perform an incoming call to an extension terminal different from that at the time of calling.
[0082]
The second effect of the present invention is that the caller identification number and the extension number have a one-to-one correspondence or that voice guidance for the caller identification number is provided, so that the call partner of the return destination from the public terminal can be used. Can be automatically identified.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an ISDN public network connection system of the present invention.
FIG. 2 is a view showing the contents of a caller identification number memory constituting the storage device in FIG. 1;
FIG. 3 is a diagram showing contents of a sender identification information memory constituting the storage device in FIG. 1;
FIG. 4 is a diagram showing contents of a notification number information memory constituting the storage device in FIG. 1;
FIG. 5 is a diagram showing contents of a first public network transmission history information memory constituting the storage device in FIG. 1;
FIG. 6 is a diagram showing contents of a second public network transmission history information memory constituting the storage device in FIG. 1;
FIG. 7 is a diagram showing the contents of an extension designation information memory constituting the storage device in FIG. 1;
FIG. 8 is a diagram showing the contents of a voice guidance information memory constituting the storage device in FIG. 1;
FIG. 9 is a flowchart showing a transmission process according to the first embodiment of the present invention;
FIG. 10 is a flowchart showing an incoming call process according to the first embodiment of the present invention.
FIG. 11 is a flowchart showing a transmission process according to a second embodiment of the present invention;
FIG. 12 is a flowchart illustrating an incoming call process according to a second embodiment of the present invention;
FIG. 13 is a flowchart showing a transmission process according to a third embodiment of the present invention;
FIG. 14 is a flowchart illustrating an incoming call process according to a third embodiment of the present invention.
FIG. 15 is a flowchart illustrating a transmission process according to a fourth embodiment of the present invention.
FIG. 16 is a flowchart showing an incoming call process according to a fourth embodiment of the present invention.
[Explanation of symbols]
1 Private branch exchange
2 extension terminals
3 ISDN public network
4 Public network
10 Communication path control device
11 Central processing unit
12 Storage device
121 caller identification number memory
122 caller identification information memory
123 Notification number information memory
124 first public network transmission history information memory
125 Second public network transmission history information memory
126 Extension designation information memory
127 Voice guidance information memory

Claims (8)

A source extension number c, which is an extension number of an extension terminal at which a caller performs a calling operation, and a notification source number d, which is an outside line number for the public network of the source extension number c, are stored in advance in association with each other. Instructions and
A procedure of storing a caller identification number b, which is a caller ID, and an extension number f of an extension terminal normally used by the caller in advance in association with each other;
At the time of a call operation by a caller, a procedure for storing the caller extension number c, the callee public network terminal number e, which is the other party's public terminal number, and the caller identification number b in association with each other,
A procedure of converting a source extension number c at the time of a call operation by a caller into the notification source number d and transmitting the call to the public network;
A step of converting the notification source number d into a source extension number c when receiving a return call for the call;
Searching for a caller identification number b corresponding to the converted source extension number c and the destination public network terminal number e;
Converting the searched caller identification number b into the extension number f;
Receiving a call at the extension terminal having the converted extension number f. A source extension number c, which is an extension number of an extension terminal at which a caller performs a calling operation, and a notification source number d, which is an outside line number for the public network of the source extension number c, are stored in advance in association with each other. Instructions and
A procedure of storing a caller identification number b, which is a caller ID, and an extension number f of an extension terminal normally used by the caller in advance in association with each other;
At the time of a calling operation by a caller, a procedure of storing the notification caller number d, the called public network terminal number e that is the other party's public terminal number, and the caller identification number b in association with each other,
A procedure of converting a source extension number c at the time of a call operation by a caller into the notification source number d and transmitting the call to the public network;
A step of searching for a caller identification number b corresponding to the notification source number d and the destination public network terminal number e at the time of receiving a return call for the call;
Converting the searched caller identification number b into the extension number f;
Receiving a call at the extension terminal having the converted extension number f. A source extension number c, which is an extension number of an extension terminal at which a caller performs a calling operation, and a notification source number d, which is an outside line number for the public network of the source extension number c, are stored in advance in association with each other. Instructions and
A procedure of storing a caller identification number b, which is a caller ID, and a voice guidance g for the caller in advance in association with each other;
At the time of a call operation by a caller, a procedure for storing the caller extension number c, the callee public network terminal number e, which is the other party's public terminal number, and the caller identification number b in association with each other,
A procedure of converting a source extension number c at the time of a call operation by a caller into the notification source number d and transmitting the call to the public network;
A step of converting the notification source number d into a source extension number c when receiving a return call for the call;
Searching for a caller identification number b corresponding to the converted source extension number c and the destination public network terminal number e;
Receiving the converted call at the extension terminal having the source extension number c;
A step of issuing the voice guidance g corresponding to the searched caller identification number b when the extension terminal responds, and designating a called party. A source extension number c, which is an extension number of an extension terminal at which a caller performs a calling operation, and a notification source number d, which is an outside line number for the public network of the source extension number c, are stored in advance in association with each other. Instructions and
A procedure of storing a caller identification number b, which is a caller ID, and a voice guidance g for the caller in advance in association with each other;
At the time of a calling operation by a caller, a procedure of storing the notification caller number d, the called public network terminal number e that is the other party's public terminal number, and the caller identification number b in association with each other,
A procedure of converting a source extension number c at the time of a call operation by a caller into the notification source number d and transmitting the call to the public network;
A step of searching for a caller identification number b corresponding to the notification source number d and the destination public network terminal number e at the time of receiving a return call for the call;
Converting the notification source number d into a source extension number c;
Receiving a call to the extension terminal having the converted source extension number c;
A step of issuing the voice guidance g corresponding to the searched caller identification number b when the extension terminal responds, and designating a called party. A public network connection program for causing a computer constituting a private branch exchange to execute the public network connection method according to claim 1. A public network connection program for causing a computer constituting a private branch exchange to execute the public network connection method according to claim 2. A public network connection program for causing a computer constituting a private branch exchange to execute the public network connection method according to claim 3. A public network connection program for causing a computer constituting a private branch exchange to execute the public network connection method according to claim 4.

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