JP2016163114A - Telephone exchange and telephone call transfer program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow for effective utilization of the line resource, by releasing the FMC line, when a telephone call is transferred from a FMC terminal to other extension telephone, during telephone conversation of the FMC terminal and an extension telephone.SOLUTION: A private branch exchange 10 accommodates first and second telephones placed on the premise, and accommodates a portable terminal via a network. The storage unit 14 of the private branch exchange 10 stores the extension number of the portable terminal during telephone conversation with the first telephone, and the identification information of the line on the FMC network side used in the telephone conversation, in association (call management data). An exchange control unit 12 refers to the storage unit on the basis of the extension number of the portable terminal, for the incoming call therefrom, and when a corresponding extension number exists, releases the line of the first telephone and the portable terminal according to the identification information of the line corresponding to the extension number.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a telephone exchange and a telephone transfer program, and more particularly to a telephone exchange and a telephone transfer program that effectively use a line between an FMC (Fixed Mobile Convergence) network and a PBX (Private Branch eXchange).

   2. Description of the Related Art In recent years, a service called FMC has been provided that allows a mobile terminal such as a mobile phone to be used as a cordless phone cordless handset at home or a corporate extension phone. Using FMC, for example, you can communicate with a mobile terminal (hereinafter referred to as FMC terminal) anywhere in the company, just like an extension telephone. The extension telephone and the FMC terminal communicate with a private branch exchange (hereinafter referred to as PBX) via the FMC network.

  Also, in Patent Document 1, generally, when an FMC terminal (such as a mobile phone / softphone) transfers during a call, the FMC terminal uses a PBX (private branch exchange) for a call related to the call destination terminal as a call related to the transfer destination terminal. ) Is identified, and PBX (private branch exchange) performs transfer processing.

JP 2011-066655

  When an extension telephone accommodated in a private branch exchange (hereinafter referred to as PBX) and an FMC terminal are in a call, if the call is transferred from the FMC terminal to another extension telephone accommodated in the PBX, it is essentially an extension mutual call within the PBX. Nevertheless, two FMC lines were used. In this way, unnecessary FMC lines were used, which hindered effective use of the lines.

  In the technique disclosed in Patent Document 1, transfer processing is performed by processing of the FMC terminal, and the function of the FMC terminal needs to be updated.

  SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a telephone exchange and a telephone transfer program in which an FMC line is released and line resources can be used effectively when the FMC terminal and the extension telephone are transferred from the FMC terminal to another extension telephone during a call. The purpose is to provide.

  In one aspect of the telephone exchange of the present invention, the telephone exchange includes (a) an extension interface that accommodates the first and second telephones arranged in the premises, and (b) an external line interface that accommodates the portable terminal via the network. And (c) a storage unit for storing the extension number of the mobile terminal in communication with the first telephone and the identification information of the network side line used in the call, and (d) the mobile phone For an incoming call from a terminal, the storage unit is referred to based on the extension number of the mobile terminal, and when there is a corresponding extension number, the first telephone and the first telephone set according to the identification information of the line corresponding to the extension number An exchange control unit that releases a line with the portable terminal is provided.

  In one aspect of the telephone transfer program of the present invention, the telephone transfer program accommodates the first and second telephones arranged on the premises, and is executed by a computer for telephone exchange that accommodates the portable terminal via the network. (A) storing the extension number of the mobile terminal in a call with the first telephone and the identification information of the network-side line used in the call in a storage unit in association with each other; (b) With respect to an incoming call from the mobile terminal, the storage unit is referred to based on the extension number of the mobile terminal, and when the corresponding extension number exists, the first is determined according to the identification information of the line corresponding to the extension number. The telephone transfer program causes the computer to execute a step of releasing a line between the telephone and the portable terminal.

  According to the present invention, when an FMC terminal and an extension telephone are transferred from an FMC terminal to another extension telephone during a call, the FMC line can be released and line resources can be used effectively.

1 is a system configuration diagram of a telephone exchange system in each embodiment. FIG. It is a block diagram of a private branch exchange. It is explanatory drawing of call management data. It is a flowchart of a transfer and line release process. It is a figure which shows the example of the call management data in a transfer and line release process. It is a figure (1) explaining the transfer and line release processing. It is FIG. (2) explaining the transfer and line release processing. FIG. 6C is a diagram (3) illustrating transfer and line release processing. FIG. 6 is a sequence diagram illustrating a procedure for releasing a line according to the first embodiment. FIG. 10 is a sequence diagram illustrating a procedure for releasing a line according to the second embodiment.

  Next, embodiments of a telephone exchange and a telephone transfer program according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a system configuration diagram of a telephone exchange system according to the first embodiment.

  The telephone switching system includes a private branch exchange (PBX) 10, at least two extension telephones 20, an FMC terminal 30, and a gateway 40. In addition, each apparatus may be provided with the number more than illustration.

  The FMC terminal 30 is connected to the private branch exchange 10 via an FMC IP network (hereinafter referred to as FMC network) 50 and a gateway 40. The FMC terminal 30 is a portable terminal that can be carried by the user. For example, the FMC terminal 30 can make a call with the extension telephone 20 via the FMC network 50 both inside and outside the private branch exchange 10.

  The extension telephone 20 is a terminal that is disposed on the premises and accommodated in the private branch exchange 10, for example. The private branch exchange 10 is a device for exchanging calls. The gateway 40 is a device that interfaces between the private branch exchange 10 and the FMC network 50.

  When the FMC terminal 30 transfers during a call, the private branch exchange 10 and the private branch exchange 10 and the FMC are not terminated without terminating the call relating to the extension telephone 20-1 on hold and the call relating to the extension telephone 20-2 being transferred. A termination (DISC) and release (REL) signal is sent to the gateway (GW) 40 interposed between the terminals 30.

  FIG. 2 is a configuration diagram of the private branch exchange 10. The private branch exchange 10 includes an extension interface 11, an exchange control unit 12, an outside line interface 13, and a storage unit 14.

  The extension interface 11 accommodates extension telephones 20-1 and 20-2 arranged on the premises. The external line interface 13 accommodates the FMC terminal 30 via the gateway 40 and the FMC network 50. The storage unit 14 stores call management data. The call management data will be described in detail later.

  In response to an incoming call from the FMC terminal 30, the exchange control unit 12 refers to the call management data stored in the storage unit 14 based on the extension number of the FMC terminal 30 that is a caller telephone number. When there is an extension number corresponding to the call management data, the exchange control unit 12 releases the line used in the call between the extension telephone 20 and the FMC terminal 30 according to the identification information of the line corresponding to the extension number.

  FIG. 3 is an explanatory diagram of call management data. The call management data includes, for example, the extension number of the FMC terminal 30 in communication with the extension telephone 20, the identification number of the call between the extension telephone 20 and the FMC terminal 30, and the identification number of the line being used in the call It is attached. The call identification number and the line identification number may be appropriate identification information other than numbers. The call management data is generated when the extension telephone 20 starts a trunk call, and one call management data, that is, one set of correspondence information exists for one trunk call. The data structure is not limited to the example of FIG. 3 and may be an appropriate structure. When the call management data is retrieved using the extension number assigned to the FMC terminal 30 as a key, a call call between the FMC terminal 30 and the extension telephone 20 is retrieved. It is only necessary to obtain the identification number and the identification number of the line being used in the call.

  Next, a procedure for transferring a call and releasing an FMC line will be described. FIG. 4 is a flowchart of transfer and line release processing in the PBX. FIG. 5 is a diagram illustrating an example of call management data in the transfer and line release processing. 6 to 8 are diagrams for explaining transfer and line release processing, respectively.

  First, the exchange control unit 12 of the private branch exchange 10 sets up a call between the FMC terminal 30 and the extension telephone (first telephone) 20-1 (S101). Here, the FMC terminal 30 is described as transmitting to the extension telephone 20-1 (FIG. 6 (a)), but the extension telephone 20-1 may transmit to the FMC terminal 30. The private branch exchange 10 that has received the call from the FMC terminal 30 via the gateway 40, and the identification number of the call between the FMC terminal 30 and the extension telephone 20-1 and the private branch exchange 10 and the FMC network 50 at appropriate timing Assign the identification number of the line to be used. As an example, the identification number of the assigned call is CALL # 1, and the identification number of the line to be used is CH # 1.

  When the extension telephone 20-1 answers, the exchange control unit 12 of the private branch exchange 10 corresponds to the extension number of the FMC terminal 30 (in this example, the extension number of the caller) as shown in the example of call management data shown in FIG. Then, the identification number of the telephone call and the identification number of the line in use are stored in the storage unit 14 (S102). When making a call from the extension telephone 20-1, the exchange control unit 12 can store the call management data in the storage unit 14 when the FMC terminal 30 responds.

  When the FMC terminal 30 and the extension telephone 20-1 are in a call (FIG. 6 (b)), when the user of the FMC terminal 30 performs a transfer operation to transfer the call with the extension telephone 20-1 to another terminal, Called from the FMC terminal 30 to the transfer destination terminal. Here, the call transfer destination is assumed to be the extension telephone (second telephone) 20-2 (FIG. 6 (c)). The exchange control unit 12 of the private branch exchange 10 detects an incoming call from the FMC terminal 30 (S103). An incoming call from the FMC terminal 30 is received from the gateway 40 through a line (for example, CH # 2) different from the line used for a call with the extension telephone 20-1. The extension telephone 20-1 listens to the hold sound sent from the FMC network 50.

  The exchange control unit 12 that has detected an incoming call from the FMC terminal 30 searches the call management data stored in the storage unit 14 using the extension number of the FMC terminal 30 that is the caller number as a key, and corresponds to the corresponding extension number The call identification number and the identification number of the line in use are acquired (S104). Here, the identification number (CALL # 1) of the call between the FMC terminal 30 and the extension telephone 20-1 stored in advance and the identification number (CH # 1) of the line used between the private branch exchange 10 and the FMC network 50 Is acquired. If the incoming call from the FMC terminal 30 is not related to the call transfer, for example, the call management data related to the FMC terminal 30 is not stored, so that it is processed as a normal call. In this way, the private branch exchange 10 can determine whether or not the incoming call from the gateway 40 is related to call transfer by referring to the call management data.

  When the extension telephone 20-2 as the call transfer destination answers, the extension telephone 20-2 and the FMC terminal 30 enter a call state (FIG. 7 (a)). Conventionally, when the FMC terminal 30 performs a disconnection operation in this state, as shown in FIG. 7 (b), a call between the extension telephones 20 is made between the private branch exchange 10 and the gateway 40 while using two lines. . In the present embodiment, when the exchange control unit 12 detects that the extension telephone 20-2 as a call transfer destination has answered, the exchange identification unit (CALL # 1) is held and the line identification number acquired in step S104 ( The line specified by CH # 1) is released (S105) (FIG. 8 (a)). For example, the exchange control unit 12 transmits a line release request from the call of the extension telephone 20-2 to the call of the extension telephone 20-1. The exchange control unit 12 transmits a disconnection instruction (DISC) to the line having the identification number (CH # 1) specified in step S104 for the call of the extension telephone 20-1. The disconnection instruction is received by the exchange control unit 12 from the FMC network 50 via the line having the identification number CH # 2, and the exchange control unit 12 transmits a release request (REL) to the line having the identification number CH # 2. The release request is received by the exchange control unit 12 via the line having the identification number CH # 1. The exchange control unit 12 returns a release completion notification from the call of the extension telephone 20-1 to the call of the extension telephone 20-2. As a result, the line is released while holding the call.

  The exchange control unit 12 interconnects the communication paths of the extension telephone 20-1 and the extension telephone 20-2 and starts an extension mutual call (S106) (FIG. 8 (b)). At this time, the above-described call identification number (CALL # 1) may be used as an identification number for identifying a call between the extension telephone 20-1 and the extension telephone 20-2. Further, the exchange control unit 12 deletes the call management data related to the released line from the storage unit 14 (S107).

  FIG. 9 is a sequence diagram showing a procedure for releasing a line.

  Here, it is assumed that the extension telephone 20-1 and the FMC terminal 30 are already in a call. When a call transfer operation is performed by the FMC terminal 30, SETUP (setup, call setup request) is transmitted via the gateway 40 and the line CH # 2. The SETUP includes the extension number of the FMC terminal 30 as the calling number and the extension number of the extension telephone 20-2 as the called number. The CALL PROC (call setting acceptance), CONN (response), and CONN ACK (response confirmation) messages are transmitted and received between the exchange control unit 12 and the gateway 40 via the line CH # 2. When the extension telephone 20-2 responds, the exchange control unit 12 retrieves the call management data as described above and issues a line release request. The exchange control unit 12 transmits DISC (disconnect instruction) from the line CH # 1 to the gateway 40, and transmits REL (release request) from the line CH # 2 to the gateway 40 to release the line CH # 1. The exchange control unit 12 issues a release completion notice and connects the extension telephones 20-1 and 20-2.

  Next, a second embodiment will be described.

  In the first embodiment, the search of the call management data by the exchange control unit 12 is triggered by the extension telephone 20 responding to the transmission by the transfer operation of the FMC terminal 30. In the second embodiment, the search of the call management data by the exchange control unit 12 is triggered when the private branch exchange 10 receives a message transmitted when the FMC terminal 30 is disconnected. As such a message, an additional information message (INFO) can be used.

  FIG. 10 is a sequence diagram showing a procedure for releasing a line in the second embodiment. Compared to the sequence diagram in the first embodiment shown in FIG. 9, the difference is that disconnection operation messages N1 and N2 are added. While the FMC terminal 30 in a call with the extension telephone 20-1 makes a call to the extension telephone 20-2 and the extension telephone 20-2 answers and can talk (FIG. 7 (a)), the FMC terminal 30 is disconnected. I do. When the FMC terminal 30 performs a disconnection operation, the FMC terminal 30 transmits disconnection operation messages N1 and N2 via the gateway 40 and the lines CH # 1 and CH # 2. Disconnection operation messages N1 and N2 are unique messages in the present embodiment, and an additional information message such as INFO can be used, for example. The exchange control unit 12 retrieves the call management data as described above when the disconnection operation message is received. As shown in FIG. 7 (b), the disconnection operation is performed after the extension telephones 20-1 and 20-2 can talk using two FMC lines (CH # 1 and CH # 2). May be manipulated. In this case, the exchange control unit 12 releases the two FMC lines to be used. The other processes are the same as those in the first embodiment, and a description thereof will be omitted.

  Next, a modified example will be described. The search of the call management data by the exchange control unit 12 is triggered by the fact that a predetermined time has passed after transferring the call from the FMC terminal 30 to the extension telephone 20, for example, in addition to the triggers according to the above-described embodiments Also good. In this case, two FMC lines are used before the time elapses, but the lines are automatically released after the time elapses and the lines can be used effectively.

  Each of the above-described embodiments and modifications can also be realized by storing a program for executing the above-described processing in a storage unit, and reading and executing the program by the computer (processing unit) of the private branch exchange 10.

  The present invention can be used for call transfer using a private branch exchange.

10 Private branch exchange
12 Exchange control unit
14 Memory
20 extension telephone
30 FMC terminal
40 gateway
50 FMC net

Claims (7)

An extension interface for accommodating first and second telephones disposed on the premises;
An external line interface for accommodating a mobile terminal via a network;
A storage unit for storing the extension number of the portable terminal in communication with the first telephone and the identification information of the network side line used in the call;
In response to an incoming call from the mobile terminal, the storage unit is referred to based on the extension number of the mobile terminal, and when the corresponding extension number exists, the first telephone set according to the identification information of the line corresponding to the extension number And a switching control unit for releasing a line with the portable terminal. The telephone exchange according to claim 1,
The exchange control unit releases the line by referring to the storage unit based on the extension number of the mobile terminal after the second telephone of the destination has responded to the incoming call from the mobile terminal A telephone switch characterized by The telephone exchange according to claim 1,
The exchange control unit, after receiving a message from the mobile terminal, receives a message indicating that the mobile terminal has disconnected the call, and then refers to the storage unit based on the extension number of the mobile terminal and releases the line A telephone switch characterized by that. The telephone exchange according to any one of claims 1 to 3,
The exchange control unit, after releasing the line, deletes the extension number of the portable terminal and the identification information of the line from the storage unit. The telephone switch according to any one of claims 1 to 4,
The exchange control unit receives an incoming call from the mobile terminal.
A telephone exchange characterized in that when the corresponding extension number exists in the storage unit, the first telephone is connected to the second telephone of the destination. The telephone exchange according to any one of claims 1 to 5,
The storage unit further stores identification information of a call between the mobile terminal and the first telephone corresponding to the extension number of the mobile terminal,
When there is an extension number corresponding to the storage unit for an incoming call from the mobile terminal, the line is released while maintaining the call indicated by the identification information of the call corresponding to the extension number. A telephone exchange. A telephone transfer program that is executed by a computer for telephone exchange that accommodates first and second telephones arranged on the premises and accommodates a portable terminal via a network,
Storing the extension number of the mobile terminal in communication with the first telephone and the identification information of the network-side line used in the call in a storage unit;
For an incoming call from the mobile terminal, the storage unit is referred to based on the extension number of the mobile terminal, and if there is a corresponding extension number, the first telephone and the first telephone according to the identification information of the line corresponding to the extension number A telephone transfer program for causing the computer to execute a step of releasing a line with the portable terminal.

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