JP5516213B2 - Extension telephone system and extension connection method thereof - Google Patents

Description

  The present invention relates to an extension telephone system using a mobile phone terminal and an extension connection method thereof.

  In recent years, services using a mobile phone terminal as an extension telephone terminal have been provided as solutions for business by each mobile phone company.

  FIG. 1 shows a configuration diagram of an example of an extension telephone system using a mobile phone terminal. A plurality of base stations 2-1, 2-2, 2-3, etc. are connected to the mobile phone network 1. An extension telephone system 3 is installed outside the mobile phone network 1, and the extension telephone system 3 is connected to the mobile phone network 1. Each of the cellular phone terminals 4-1, 4-2, 4-3 is wirelessly connected to each of the base stations 2-1, 2-2, 2-3.

  For example, when an extension number is input from the mobile phone terminal 4-1, a call is made by the extension telephone system 3. The extension telephone system 3 converts the extension number into a mobile number, for example, a mobile phone terminal 4-3 located in the cell of the base station 2-3. Call.

  FIG. 2 shows an operation explanatory diagram of an example of an extension telephone system using a mobile phone terminal. Here, the mobile phone terminal 4-1 (mobile phone terminal B) has a mobile phone number “090-B” and an extension number “2002”, and the mobile phone terminal 4-3 (mobile phone terminal A) has a mobile phone number “090”. -A "and extension number" 2001 ".

  (1) Dial “2001”, which is the extension number of the mobile phone terminal 4-3, from the mobile phone terminal 4-1.

  (2) Since the mobile phone system 5 in the mobile phone network 1 does not start with “2001” starting from “0” or “1”, the mobile phone system 5 is uniformly routed to the extension telephone system 3.

  (3) The mobile extension conversion unit 6 of the extension telephone system 3 refers to the mobile extension conversion DB (database) 7 to determine the extension group name “α” based on the caller mobile phone number “090-B”. The extension number is converted to “2002”. Then, the extension group name “α” is added, and the extension processing unit 8 is routed.

  (4) The extension processing unit 8 refers to the extension subscriber DB 9, processes it as a call from the extension number “2002” with the extension group name “α” to the extension number “2001”, and routes it to the portable extension conversion unit 6. .

  (5) The mobile extension conversion unit 6 refers to the mobile extension conversion DB 7, converts the incoming extension number “2001” to the mobile number “090-A” based on the extension group name “α”, and routes it to the mobile phone system 5. To do.

  (6) The mobile phone terminal 4-3 receives the call from the mobile phone terminal 4-1 having the extension number "2002".

  FIG. 3 shows an operation sequence when the mobile phone terminal 4-3 dials “2002”, which is the extension number of the mobile phone terminal 4-1, contrary to FIG.

  FIG. 4 shows a process flowchart of the mobile extension conversion unit 6. This process is started when a signal is received from the mobile phone system. In step S1, it is determined whether or not the extension group name and extension number have been extracted from the mobile number (calling number) on the caller side. If the extension group name and extension number can be extracted, the mobile phone number on the calling side is converted into an extension number in step S2, the extension group name is added in step S3, and a signal is transmitted to the extension processing unit 8. If the extension group name and extension number cannot be extracted in step S1, the connection is impossible and the process ends.

  FIG. 5 shows a process flowchart of the portable extension conversion unit 6. This process is started when a signal is received from the extension processing unit 8. In step S5, it is determined whether or not a mobile phone number has been extracted from the extension group name and the mobile phone number (incoming extension number) on the called side. If the mobile number can be extracted, the extension number on the called side is converted into a mobile number in step S6, the extension group name is deleted in step S7, and a signal is transmitted to the extension processing unit 8. If the extension group name and extension number cannot be extracted in step S5, the connection is impossible and the process ends.

  By the way, it is a network having an extension service node that accommodates subscriber information of an extension extension device constituting a corporate communication network and a plurality of extension extension devices and manages the extension extension device. A technology is known that, when identified, connects to a public network as a proxy for an outpatient subscriber so that a subscriber accommodated in the public network can communicate in the extension network area (see, for example, Patent Document 1).

  In addition, when the mobile phone moves from the public call zone where the location is registered to the private call zone, the private branch exchange receives an extension to the public telephone number based on the correspondence between the public telephone number and the extension telephone number by the number conversion unit. If the mobile phone stays only in the private call zone, the private branch exchange can register the location in the public call zone at the same time as the location registration in the private call zone of the mobile phone. There is known a technique that can automatically perform and respond to a public telephone number in a self-operated call zone (see, for example, Patent Document 2).

JP 2004-289618 A JP-A-8-9042

  When there is a demand to use one mobile phone terminal in each extension group and use it in each extension group, which extension group the caller belongs to in the conventional extension telephone system shown in FIG. Since the mobile phone number is uniquely determined, there is a problem that one mobile phone terminal cannot belong to a plurality of extension groups.

  Further, in the conventional extension telephone system shown in FIG. 2, since the calling number is uniquely determined from the calling mobile number, when the receiving mobile phone terminal belongs to a plurality of extension groups, the incoming call from which extension group There was a problem that I could not know if it was.

  The disclosed extension telephone system is intended to allow one mobile phone terminal to belong to a plurality of extension groups.

An extension telephone system according to an embodiment of the disclosure is an extension telephone system that uses a mobile phone terminal as an extension telephone terminal,
The source mobile number and the destination extension number transmitted from the mobile phone terminal are supplied from the mobile phone system, and the extension group information and the extension of the source are necessary for identifying the extension group. The number is converted into a number and supplied to the extension processing unit together with the extension number of the destination, and the extension group information, the source extension number, and the extension number of the destination are supplied from the extension processing unit, and the extension number of the destination A mobile extension converter that converts the mobile phone number into a mobile number of the incoming call and supplies the mobile phone system to the mobile phone system;
Call control in which the extension group information of the transmission source, the extension number, and the extension number of the called party are supplied from the portable extension conversion unit, and the call is made from the source extension number corresponding to the extension group information to the called extension number An extension processing unit that supplies the extension group information, a source extension number, and a destination extension number to the mobile extension conversion unit,
When the mobile phone number supplied from the mobile phone system is converted into a plurality of extension group information, the mobile phone extension unit sends the caller mobile phone number from the mobile phone terminal. It is converted into extension group information that matches the extension group information of the called party added to the extension number of the called party and the extension number of the calling party.

  According to this embodiment, one mobile phone terminal can belong to a plurality of extension groups.

It is a block diagram of an example of an extension telephone system. It is operation | movement explanatory drawing of an example of an extension telephone system. It is an operation | movement sequence of another example of an extension telephone system. It is a process flowchart of a portable extension conversion part. It is a process flowchart of a portable extension conversion part. It is a block diagram of one Embodiment of an extension telephone system. It is a block diagram of one Embodiment of portable extension conversion DB. It is a block diagram of one Embodiment of an extension subscriber DB. It is a flowchart of one Embodiment of the process which a portable extension conversion part performs. It is a flowchart of one Embodiment of the process which a portable extension conversion part performs. It is explanatory drawing of the 1st operation | movement of an extension telephone system. It is a figure which shows the sequence of the 1st operation | movement of an extension telephone system. It is explanatory drawing of the 2nd operation | movement of an extension telephone system. It is a figure which shows the sequence of the 2nd operation | movement of an extension telephone system. It is a figure which shows the sequence of the 3rd operation | movement of an extension telephone system. It is a figure which shows the sequence of the 4th operation | movement of an extension telephone system. It is a figure which shows the sequence of the 5th operation | movement of an extension telephone system. . It is a figure which shows the sequence of the 6th operation | movement of an extension telephone system. It is a figure which shows the sequence of the 7th operation | movement of an extension telephone system.

  Embodiments will be described below with reference to the drawings.

<Configuration of extension telephone system>
FIG. 6 shows a configuration diagram of an embodiment of the extension telephone system. In FIG. 6, the extension telephone system 10 has a mobile extension conversion unit 20 that converts a mobile number and an extension number to each other, and an extension processing unit 30 that provides routing and additional services to the called user from the received number. ing. Here, two logical function units are realized, but the portable extension conversion unit 20 may be included in the extension processing unit 30 for construction.

  Here, the user's mobile phone belongs to a plurality of extension groups, and the user adds the destination extension group number to the head of the extension number of the destination and makes a call as an extension phone. At this time, the transmitted user information is the “mobile number” as the calling number and “extension group number + extension number” dialed as the called number, and the calling number and the called number are transmitted to the extension telephone system 10. . In a company's internal telephone system, when an extension group number is assigned to each project and a user is participating in multiple projects, the mobile phone of the user is assigned to multiple extension groups. Will belong.

  The user information from the mobile phone system received by the extension telephone system 10 is supplied to the extension group name determination unit 21 of the mobile extension conversion unit 20. The extension group name determination unit 21 accesses the mobile extension conversion information management unit 23 to determine the extension group name of the destination. The mobile extension conversion information management unit 23 refers to the mobile extension conversion DB (database) 24 with the extension group number supplied from the extension group name determination unit 21 to determine the extension group name of the destination and determines the extension of the determined destination The group name is notified to the mobile number / extension number conversion unit 22.

  FIG. 7 shows a configuration diagram of an embodiment of the portable extension conversion DB 24. The mobile extension conversion DB 24 is provided with a record for each extension number, and each record has items of an extension group number, extension group name, mobile number, and extension number as extension group information.

  The mobile number / extension number conversion unit 22 accesses the mobile extension conversion information management unit 23 in order to convert the mobile number of the calling number into the extension number, and the extension assigned to the mobile number of the calling number from the mobile extension conversion DB 24 Get what the number is. The mobile number / extension number conversion unit 22 converts the mobile number of the calling party number into an extension number based on the result, deletes the extension group number added to the head of the called number, and makes only the extension number of the destination. The extension processing unit 30 is notified of the extension number obtained by converting the mobile number and the extension number of the called party together with the extension group name determined by the extension group name determination unit 21. The mobile number / extension number conversion unit 22 may perform protocol conversion such as conversion from ISUP (ISDN User Part) to SIP (Session Initiation Protocol) as necessary.

  The extension processing unit 30 has a general PBX (private branch exchange) configuration. The signal receiving unit 31 analyzes the signal content received from the portable extension conversion unit 20, receives the received signal content, that is, the source extension number and the destination extension number, and supplies them to the call control unit 32. The call control unit 32 inquires the extension subscriber information management unit 33 about the destination information using the extension number of the destination. The extension subscriber information management unit 33 refers to the extension subscriber DB 34 to read out information such as the call state of the called party and notifies the call control unit 32 of the information.

  FIG. 8 shows a configuration diagram of an embodiment of the extension subscriber DB 34. The extension subscriber DB 34 is provided with a record for each extension number, and each record has items of extension group name, extension number, call state, and additional service as extension group information. The call state may be busy or idle. Additional services include call forwarding service that forwards to the extension number of the forwarding destination that is added when busy, answering machine service, and forwarding to the extension number of the forwarding destination that is added when there is no incoming call after a certain time of calling Such as a response delay service, a message response service that performs a message response, and the like.

  The extension group number may be registered in place of the extension group name in each record of the extension subscriber DB 34, or the extension group number may be registered together with the extension group name. In this case, the mobile extension conversion unit 20 does not need to convert the extension group number and the extension group name. That is, in this embodiment, the extension group number and the extension group name are used as the extension group information.

  The call control unit 32 determines the call state of the destination and the additional service setting status based on the notification from the extension subscriber information management unit 33. If the call control unit 32 is idle, the call control unit 32 instructs the basic service control unit 35 to receive the voice channel. Is transmitted from the signal transmission unit 37 to the portable extension conversion unit 20. Here, both the calling number and the called number are transmitted as extension numbers together with the extension group name. Further, when an additional service is set for the destination, the call control unit 32 causes the additional service control unit 36 to perform the additional service.

  The extension group number determination unit 25 that has received the signal from the signal transmission unit 37 accesses the mobile extension conversion information management unit 23 in order to determine the extension group number of the caller. The mobile extension conversion information management unit 23 determines an extension group number by referring to the mobile extension conversion DB 24 using the extension group name supplied from the extension group number determination unit 25, and the determined extension group number is an extension number / mobile number conversion unit. 26 is notified.

  The extension number / mobile number conversion unit 26 uses the destination extension number to access the mobile extension conversion information management unit 23 to acquire the destination mobile number in order to convert the destination extension number into a mobile number. . The extension number / mobile number conversion unit 26 converts the destination extension number into a mobile number based on the result. Further, when the destination mobile number belongs to a plurality of extension groups, the extension group number determined by the extension group number determination unit 25 is added to the head of the extension number of the transmission source, and the destination mobile phone Send the signal to the mobile phone system. If the mobile number of the called party belongs to only one extension group, it is not necessary to add the extension group number to the head of the extension number of the caller. Note that the extension number / mobile number conversion unit 26 may perform protocol conversion such as conversion from SIP to ISUP, for example, as necessary.

<Processing flowchart of portable extension conversion unit>
FIG. 9 shows a flowchart of an embodiment of processing executed when the mobile extension conversion unit 20 receives a signal from the mobile phone system. This process is started when a signal is received from the mobile phone system. In step S11, it is determined whether or not the extension group and extension number have been extracted from the mobile number of the calling number (calling number). If the extension group and the extension number can be extracted, it is determined whether or not any extension group number corresponding to the extension group extracted in step S12 matches the extension group number at the head of the called number.

  If there is a match, the mobile number of the calling number is converted to the extension number of the extension group that matches the extension group number at the beginning of the called number in step S13, and the extension group number at the beginning of the called number is deleted. For example, if there is no match due to dialing without adding an extension group number at the beginning of the called number, the mobile number of the calling number is converted into an extension number in step S14. After executing step S13 or S14, the extension group name of the called party is added to the extension number of the called party and the calling party in step S15, and the extension group name is transmitted to the extension processing unit 30 and the process is terminated.

  On the other hand, if the extension group and extension number could not be extracted in step S11, the connection is impossible and the process ends.

  FIG. 10 shows a flowchart of an embodiment of processing executed when the mobile extension conversion unit 20 receives a signal from the extension processing unit 30. This process is started when a signal is received from the extension processing unit 30. In step S21, it is determined whether or not the mobile number has been extracted from the extension group name of the signal received from the extension processing unit 30 and the extension number of the destination. If the mobile number can be extracted, it is determined whether or not a plurality of extension groups can be extracted from the converted mobile number in step S23 after converting the extension number (incoming extension number) of the incoming call to a mobile number in step S22. Determine.

  If a plurality of extension groups can be extracted, an extension group number corresponding to the source extension group name of the signal received from the extension processing unit 30 is added to the head of the source extension number (calling number) in step S24. . If a plurality of extension groups cannot be extracted in step S23, the process proceeds to step S25.

  In step S25, the source extension group name is deleted and a signal is transmitted to the mobile phone system. If the extension group and extension number cannot be extracted in step S21, the connection is impossible and the process ends.

<Description of first operation>
FIG. 11 shows an explanatory diagram of the first operation of the extension telephone system using the mobile phone terminal. FIG. 12 shows the sequence of the first operation. Here, the mobile phone terminal 14-1 (mobile phone terminal B) has the mobile phone number “090-B”, the extension number “2002” of the extension group name “α”, and the extension number “of the extension group name“ β ”. 3002 ". Further, it is assumed that the mobile phone terminal 14-3 (mobile phone terminal A) has the mobile phone number “090-A” and the extension number “2001” of the extension group name “α”.

  (1) The mobile phone terminal 14-1 dials "5-2001", which is an extension number with the extension group number "5" of the extension group name "α" of the mobile phone terminal 14-3 added to the head.

  (2) Since the cellular phone system 15 of the cellular phone network 11 does not begin with “0” or “1”, “5-2001” is routed to the extension telephone system 10 uniformly.

  (3) The mobile extension conversion unit 20 of the extension telephone system 10 refers to the mobile extension conversion DB 24 and determines the extension group name “α” based on the leading “5” of the called number and the calling mobile phone number “090-B”. , The calling mobile number is converted into the extension number “2002”. Then, the extension group name “α” is added to the extension numbers of the caller and receiver and the extension processing unit 30 is routed.

  (4) The extension processing unit 30 refers to the extension subscriber DB 34 and processes the call from the extension number “2002” of the extension group name “α” to the extension number “2001” of the same extension group. Route to.

  (5) The mobile extension conversion unit 20 refers to the mobile extension conversion DB 24, converts the extension number “2001” of the destination to the mobile number “090-A” based on the extension group name “α”, and the mobile phone system 15 Route to.

  (6) The mobile phone terminal 14-3 receives a call from the mobile phone terminal 14-1 having the extension number "2002".

  In this way, one mobile phone terminal can belong to a plurality of extension groups, and the extension group number “5” corresponding to the extension group name “α” of the mobile phone terminal 14-3 is added to the head. An extension group can be identified by dialing "5-2001" which is an extension number.

<Description of second operation>
FIG. 13 shows an explanatory diagram of the second operation of the extension telephone system using the mobile phone terminal, and FIG. 14 shows a sequence of the second operation. Here, the mobile phone terminal 14-1 (mobile phone terminal B) has the mobile phone number “090-B”, the extension number “2002” of the extension group name “α”, and the extension number “of the extension group name“ β ”. 3002 ". Further, it is assumed that the mobile phone terminal 14-3 (mobile phone terminal A) has the mobile phone number “090-A” and the extension number “2001” of the extension group name “α”.

  (1) Dial “2002”, which is the extension number of the mobile phone terminal 14-1 (mobile phone terminal B), from the mobile phone terminal 14-3 (mobile phone terminal A). Here, the extension group number is not added.

  (2) Since the mobile phone system 15 of the mobile phone network 11 does not start with “2002” as “0” or “1”, the mobile phone system 15 is uniformly routed to the extension telephone system 10.

  (3) The mobile extension conversion unit 20 of the extension telephone system 10 refers to the mobile extension conversion DB 24, determines the extension group name “α” based on the calling mobile phone number “090-A”, and sets the outgoing mobile phone number to the extension number “2001”. To "". Then, the extension group name “α” is added to the extension numbers of the caller and receiver and the extension processing unit 30 is routed.

  (4) The extension processing unit 30 refers to the extension subscriber DB 34, processes the call from the extension number “2001” with the extension group name “α” to the extension number “2002” of the same extension group, and the mobile extension conversion unit Route to 20.

  (5) The mobile extension conversion unit 20 refers to the mobile extension conversion DB 24 and converts the called extension number “2002” into the mobile number “090-B” based on the extension group name “α”. In addition, since it is confirmed whether or not this mobile number “090-B” belongs to a plurality of extension groups and belongs to a plurality of extension groups, the extension number “2001” of the transmission source An extension group number “5” corresponding to the extension group name “α” is added to the head, and the mobile phone system 15 is used by using the destination mobile number “090-B” and the source extension number “5-2001”. Route to.

  (6) The mobile phone terminal 14-1 receives a call from the mobile phone terminal 14-3 having the extension number “5-2001”.

  In this way, it is possible to know which extension group the incoming call is from even if the destination mobile phone terminal belongs to a plurality of extension groups.

<Third operation sequence>
FIG. 15 shows a third operation sequence of the extension telephone system using the mobile phone terminal.

  (1) Dial “3002” which is the extension number of the extension group name “β” of the mobile phone terminal 14-1 (mobile phone terminal B) from the mobile phone terminal 14-3 (mobile phone terminal A). Here, the extension group number is not added.

  (2) Since the mobile phone system 15 of the mobile phone network 11 does not start with “3002” starting from “0” or “1”, it is uniformly routed to the extension telephone system 10.

  (3) The mobile extension conversion unit 20 of the extension telephone system 10 refers to the mobile extension conversion DB 24, determines the extension group name “α” based on the calling mobile phone number “090-A”, and sets the calling number to the extension number “2001”. Convert to Then, the extension group name “α” is added to the extension numbers of the caller and receiver and the extension processing unit 30 is routed.

  (4) The extension processing unit 30 refers to the extension subscriber DB 34, analyzes the transmission from the extension number “2001” with the extension group name “α” to the extension number “3002”, and sets the extension group name “α” as an extension. Since the number “3002” does not exist, connection is impossible.

<Fourth operation sequence>
FIG. 16 shows a fourth operation sequence of the extension telephone system using the mobile phone terminal.

  (1) Dial the extension number “7-3002” with the extension group number “7” added to the head from the mobile phone terminal 14-3 (mobile phone terminal A).

  (2) Since the mobile phone system 15 of the mobile phone network 11 does not start with “7-3002” starting from “0” or “1”, it is routinely routed to the extension telephone system 10.

  (3) The mobile extension conversion unit 20 of the extension telephone system 10 refers to the mobile extension conversion DB 24, determines the extension group name “α” based on the calling mobile phone number “090-A”, and sets the calling number to the extension number “2001”. Convert to Then, the extension group name “α” is added to the extension numbers of the caller and receiver and the extension processing unit 30 is routed.

  (4) The extension processing unit 30 refers to the extension subscriber DB 34, analyzes the transmission from the extension number “2001” with the extension group name “α” to the extension number “7-3002”, and determines the extension group name “α”. Since the extension number “7-3002” does not exist, connection is impossible.

<Fifth operation sequence>
FIG. 17 shows a fifth operation sequence of the extension telephone system using the mobile phone terminal. Here, the mobile phone terminal 14-1 (mobile phone terminal B) has the mobile phone number “090-B”, the extension number “2002” of the extension group name “α”, and the extension number “of the extension group name“ β ”. 3002 ". The mobile phone terminal 14-2 (mobile phone terminal C) has a mobile phone number “090-C” and has an extension number “3003” of the extension group name “β”.

  (1) Dial “3002”, which is the extension number of the mobile phone terminal 14-1 (mobile phone terminal B), from the mobile phone terminal 14-2 (mobile phone terminal C). Here, the extension group number is not added.

  (2) Since the mobile phone system 15 of the mobile phone network 11 does not start with “3002” starting from “0” or “1”, it is uniformly routed to the extension telephone system 10.

  (3) The mobile extension conversion unit 20 of the extension telephone system 10 refers to the mobile extension conversion DB 24, determines the extension group name “β” based on the calling mobile number “090-C”, and sets the calling number to the extension number “3003”. Convert to Then, the extension group name “β” is added to the extension numbers of the caller and receiver and the extension processing unit 30 is routed.

  (4) The extension processing unit 30 refers to the extension subscriber DB 34, processes the call from the extension number “3003” with the extension group name “β” to the extension number “3002” of the same extension group, and the mobile extension conversion unit Route to 20.

  (5) The mobile extension conversion unit 20 refers to the mobile extension conversion DB 24 and converts the destination extension number “3002” into the mobile number “090-B” based on the extension group name “α”. Further, since the mobile number “090-B” of the destination is confirmed to belong to a plurality of extension groups and belongs to a plurality of extension groups “α”, “β”, The extension group number “7” corresponding to the extension group name “β” is added to the head of the extension number “3003” of the mobile phone, and the mobile number “090-B” of the called party and the extension number “7-3003” of the calling party are added. Is used to route to the mobile phone system 15.

  (6) The mobile phone terminal 14-1 receives a call from the mobile phone terminal 14-3 having the extension number “7-3003”.

<Sixth operation sequence>
FIG. 18 shows a sixth operation sequence of the extension telephone system using the mobile phone terminal.

  (1) An extension number in which the extension group number “7” of the extension group name “β” from the mobile phone terminal 14-1 (mobile phone terminal B) to the mobile phone terminal 14-2 (mobile phone terminal C) is added to the head. Dial "7-3003".

  (2) Since the mobile phone system 15 of the mobile phone network 11 does not start with “7-3003” starting from “0” or “1”, it is uniformly routed to the extension telephone system 10.

  (3) The mobile extension conversion unit 20 of the extension telephone system 10 refers to the mobile extension conversion DB 24 to determine the extension group name “β” based on the leading “7” and the calling mobile number “090-B”. The calling number is converted into the extension number “3002”. Then, the extension group name “β” is added to the extension numbers of the caller and receiver and the extension processing unit 30 is routed.

  (4) The extension processing unit 30 refers to the extension subscriber DB 34, processes the call from the extension number “3002” with the extension group name “β” to the extension number “3003” of the same extension group, and the mobile extension conversion unit Route to 20.

  (5) The mobile extension conversion unit 20 refers to the mobile extension conversion DB 24, converts the extension number “3003” of the destination to the mobile number “090-C” based on the extension group name “β”, and the mobile phone system 15 Route to.

  (6) The mobile phone terminal 14-2 receives a call from the mobile phone terminal 14-1 with the extension number "3002".

<Seventh operation sequence>
FIG. 19 shows a seventh operation sequence of the extension telephone system using the mobile phone terminal.

  (1) Dial “2001” which is the extension number of the extension group name “α” of the mobile phone terminal 14-3 (mobile phone terminal A) from the mobile phone terminal 14-1 (mobile phone terminal B). Here, the extension group number is not added.

  (2) Since the mobile phone system 15 of the mobile phone network 11 does not start with “2001” starting from “0” or “1”, it is uniformly routed to the extension telephone system 10.

  (3) The mobile extension conversion unit 20 of the extension telephone system 10 refers to the mobile extension conversion DB 24 to determine the extension group names “α” and “β” based on the calling mobile phone number “090-B”. Since it is not known to which extension group of “α” and “β”, the connection is impossible.

According to the above embodiment, one mobile phone terminal can belong to a plurality of extension groups, and an extension group can be assigned by dialing an extension number prefixed with the extension group number of the destination mobile phone terminal. Can be identified. Further, even when the destination mobile phone terminal belongs to a plurality of extension groups, it is possible to know which extension group the incoming call is from.
(Appendix 1)
An extension telephone system that uses a mobile phone terminal as an extension telephone terminal,
The source mobile number and the destination extension number transmitted from the mobile phone terminal are supplied from the mobile phone system, and the extension group information and the extension of the source are necessary for identifying the extension group. The number is converted into a number and supplied to the extension processing unit together with the extension number of the destination, and the extension group information, the source extension number, and the extension number of the destination are supplied from the extension processing unit, and the extension number of the destination A mobile extension converter that converts the mobile phone number into a mobile number of the incoming call and supplies the mobile phone system to the mobile phone system;
Call control in which the extension group information of the transmission source, the extension number, and the extension number of the called party are supplied from the portable extension conversion unit, and the call is made from the source extension number corresponding to the extension group information to the called extension number An extension processing unit that supplies the extension group information, a source extension number, and a destination extension number to the mobile extension conversion unit,
When the mobile phone number supplied from the mobile phone system is converted into a plurality of extension group information, the mobile phone extension unit sends the caller mobile phone number from the mobile phone terminal. The extension group information that matches the extension group information of the called party added to the extension number of the called party and the extension number of the calling party are converted.
An extension telephone system characterized by this.
(Appendix 2)
In the extension telephone system described in Appendix 1,
The mobile extension conversion unit, when a plurality of extension group information is obtained corresponding to the mobile number obtained by converting the extension number of the called party supplied from the extension processing unit, the outgoing call supplied from the extension processing unit Adding the extension group information supplied from the extension processing unit to the head of the original extension number and supplying it to the mobile phone system;
An extension telephone system characterized by this.
(Appendix 3)
In the extension telephone system described in Appendix 2,
The mobile extension conversion unit has a mobile extension conversion database in which extension group information and extension group information are registered in advance for each extension number,
The mobile extension conversion unit refers to the mobile extension conversion database with the mobile number of the caller source supplied from the mobile phone system, and converts the extension group information and the caller extension number,
An extension telephone system characterized by this.
(Appendix 4)
In the extension telephone system described in Appendix 3,
The mobile phone conversion unit refers to the mobile phone extension conversion database by referring to the extension group information supplied from the extension processing unit and the extension number of the destination, and converts the database into the mobile number of the destination. system.
(Appendix 5)
An extension connection method for an extension telephone system that uses a mobile phone terminal as an extension telephone terminal.
The extension extension unit of the extension telephone system is supplied from the mobile phone system with the mobile number of the caller and the extension number of the callee sent from the mobile phone terminal, and identifies the mobile number of the caller as an extension group Convert the necessary extension group information and the extension number of the caller to the extension processing unit of the extension telephone system together with the extension number of the called party,
The extension processing unit is supplied with the extension group information and extension number of the transmission source and the extension number of the call destination from the mobile extension conversion unit, and from the extension number of the call source corresponding to the extension group information to the extension number of the call destination Perform call control as outgoing and supply the extension group information, the extension number of the caller, and the extension number of the callee to the mobile extension conversion unit,
The mobile extension conversion unit is supplied with the extension group information, a source extension number, and a destination extension number from the extension processing unit, converts the extension number of the destination into a mobile number of the destination, and converts the mobile phone Supply to the system,
When the mobile phone number supplied from the mobile phone system is converted into a plurality of extension group information, the mobile phone extension unit sends the caller mobile phone number from the mobile phone terminal. The extension group information that matches the extension group information of the called party added to the extension number of the called party and the extension number of the calling party are converted.
An extension connection method characterized by the above.
(Appendix 6)
In the extension connection method described in appendix 5,
The mobile extension conversion unit, when a plurality of extension group information is obtained corresponding to the mobile number obtained by converting the extension number of the called party supplied from the extension processing unit, the outgoing call supplied from the extension processing unit Adding the extension group information supplied from the extension processing unit to the head of the original extension number and supplying it to the mobile phone system;
An extension connection method characterized by the above.
(Appendix 7)
In the extension connection method described in appendix 6,
The mobile extension conversion unit has a mobile extension conversion database in which extension group information and extension group information are registered in advance for each extension number,
The mobile extension conversion unit refers to the mobile extension conversion database with the mobile number of the caller source supplied from the mobile phone system, and converts the extension group information and the caller extension number,
An extension connection method characterized by the above.
(Appendix 8)
In the extension connection method described in appendix 7,
The mobile extension conversion unit refers to the mobile extension conversion database by referring to the extension group information supplied from the extension processing unit and the extension number of the destination, and converts the database into the mobile number of the destination. .

DESCRIPTION OF SYMBOLS 10 Extension telephone system 11 Mobile telephone network 15 Mobile telephone system 20 Mobile extension conversion part 21 Extension group name determination part 22 Mobile number / extension number conversion part 23 Mobile extension conversion information management part 24 Mobile extension conversion DB
25 Extension Group Number Determination Unit 26 Extension Number / Mobile Number Conversion Unit 30 Extension Processing Unit 31 Signal Reception Unit 32 Call Control Unit 33 Extension Subscriber Information Management Unit 34 Extension Subscriber DB
35 Basic Service Control Unit 36 Additional Service Control Unit 37 Signal Transmission Unit

Claims (6)

An extension telephone system that uses a mobile phone terminal as an extension telephone terminal,
The source mobile number and the destination extension number transmitted from the mobile phone terminal are supplied from the mobile phone system, and the extension group information and the extension of the source are necessary for identifying the extension group. The number is converted into a number and supplied to the extension processing unit together with the extension number of the destination, and the extension group information, the source extension number, and the extension number of the destination are supplied from the extension processing unit, and the extension number of the destination A mobile extension converter that converts the mobile phone number into a mobile number of the incoming call and supplies the mobile phone system to the mobile phone system;
Call control in which the extension group information of the transmission source, the extension number, and the extension number of the called party are supplied from the portable extension conversion unit, and the call is made from the source extension number corresponding to the extension group information to the called extension number An extension processing unit that supplies the extension group information, a source extension number, and a destination extension number to the mobile extension conversion unit,
When the mobile phone number supplied from the mobile phone system is converted into a plurality of extension group information, the mobile phone extension unit sends the caller mobile phone number from the mobile phone terminal. The extension group information that matches the extension group information of the called party added to the extension number of the called party and the extension number of the calling party are converted.
An extension telephone system characterized by this. The extension telephone system according to claim 1, wherein
The mobile extension conversion unit, when a plurality of extension group information is obtained corresponding to the mobile number obtained by converting the extension number of the called party supplied from the extension processing unit, the outgoing call supplied from the extension processing unit Adding the extension group information supplied from the extension processing unit to the head of the original extension number and supplying it to the mobile phone system;
An extension telephone system characterized by this. The extension telephone system according to claim 2,
The mobile extension conversion unit has a mobile extension conversion database in which extension group information and extension group information are registered in advance for each extension number,
The mobile extension conversion unit refers to the mobile extension conversion database with the mobile number of the caller source supplied from the mobile phone system, and converts the extension group information and the caller extension number,
An extension telephone system characterized by this. The extension telephone system according to claim 3,
The mobile phone conversion unit refers to the mobile phone extension conversion database by referring to the extension group information supplied from the extension processing unit and the extension number of the destination, and converts the database into the mobile number of the destination. system. An extension connection method for an extension telephone system that uses a mobile phone terminal as an extension telephone terminal.
The extension extension unit of the extension telephone system is supplied from the mobile phone system with the mobile number of the caller and the extension number of the callee sent from the mobile phone terminal, and identifies the mobile number of the caller as an extension group Convert the necessary extension group information and the extension number of the caller to the extension processing unit of the extension telephone system together with the extension number of the called party,
The extension processing unit is supplied with the extension group information and extension number of the transmission source and the extension number of the call destination from the mobile extension conversion unit, and from the extension number of the call source corresponding to the extension group information to the extension number of the call destination Perform call control as outgoing and supply the extension group information, the extension number of the caller, and the extension number of the callee to the mobile extension conversion unit,
The mobile extension conversion unit is supplied with the extension group information, a source extension number, and a destination extension number from the extension processing unit, converts the extension number of the destination into a mobile number of the destination, and converts the mobile phone Supply to the system,
When the mobile phone number supplied from the mobile phone system is converted into a plurality of extension group information, the mobile phone extension unit sends the caller mobile phone number from the mobile phone terminal. The extension group information that matches the extension group information of the called party added to the extension number of the called party and the extension number of the calling party are converted.
An extension connection method characterized by the above. The extension connection method according to claim 5,
The mobile extension conversion unit, when a plurality of extension group information is obtained corresponding to the mobile number obtained by converting the extension number of the called party supplied from the extension processing unit, the outgoing call supplied from the extension processing unit Adding the extension group information supplied from the extension processing unit to the head of the original extension number and supplying it to the mobile phone system;
An extension connection method characterized by the above.

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