JP6221595B2 - Telephone system - Google Patents

Description

  The present invention relates to a telephone control technique, and more particularly, to a telephone control technique for performing cooperative control of accommodated extension telephone terminals and radio telephone terminals.

  In business phones and PBX systems, along with the widespread use of IP telephone functions using wireless LAN in wireless telephone terminals such as smart phones and mobile phones, these wireless telephone terminals are connected via a wireless LAN base station to a main device or a telephone control device such as a PBX. In the same way as an extension telephone terminal accommodated in a telephone line and accommodated via an extension line, a technology for controlling as a telephone terminal under a telephone control apparatus is being put into practical use.

  Conventionally, as a telephone control technology for one user to use such an extension telephone terminal and a radio telephone terminal properly, one individual incoming call number is assigned to the extension telephone terminal and the radio telephone terminal that are related to each other. Thus, there has been proposed a terminal cooperation function capable of responding to an incoming call for the individual incoming call number by either an extension telephone terminal or a wireless telephone terminal (see, for example, Patent Document 1).

JP 2011-188160 A

  In general, wireless telephone terminals such as smartphones and mobile phones having an IP telephone function use a number of call control servers provided in the IP telephone network as in the case of IP telephone terminals when making a call using the IP telephone network. Of these, it is necessary to execute a registration process for requesting call control to a call control server specified in advance.

On the other hand, in the terminal cooperation technology, the wireless telephone terminal is actually accommodated in the telephone control device, and the cooperative telephone number consisting of the IP telephone number of the wireless telephone terminal is commonly assigned as the individual telephone number of any extension telephone terminal, When a common telephone number is shared between a telephone terminal and an extension telephone terminal, the telephone control device normally controls the wireless telephone terminal so that it is exchanged between the wireless telephone terminal and the IP telephone network. Call control messages such as outgoing and incoming calls need to be relayed by the telephone control device.
For this reason, the telephone control device executes registration processing of the wireless telephone terminal with respect to the IP telephone network instead of the wireless telephone terminal.

  In such a registration process, it is necessary to respond to an authentication request from the IP telephone network. For this reason, in order for the telephone control device to execute the registration process on behalf of the wireless telephone terminal, an ID or password required for authentication may be returned from the telephone control device to the IP telephone network. Therefore, a method is conceivable in which an individual ID and a password are set in advance in the telephone control device for each IP telephone terminal.

However, since the ID and password for the IP telephone network of such a wireless telephone terminal suppress unauthorized use, it is necessary to sufficiently consider security in the setting. For this reason, there is a problem in that a complicated setting operation is required when setting an ID and a password in the telephone control device.
In addition, when cooperatively controlling a wireless telephone terminal that is personally owned by a user, an IP telephone network ID or password, which is personal information, is set in a telephone system of a company or the like used by many people. Therefore, there is a problem that some users may feel resistance.

  The present invention is for solving such problems, and provides a telephone control technology capable of cooperatively controlling a wireless telephone terminal without requiring a complicated setting operation and without causing a user to feel resistance. The purpose is that.

In order to achieve such an object, a telephone system according to the present invention includes a telephone control device and a radio base station connected to a LAN line, a router that relay-connects the LAN line and the IP telephone network, and the radio system. At least one wireless telephone terminal connected to the router via a base station, and the telephone control apparatus accommodates at least one extension telephone terminal, and is registered in advance among these extension telephone terminals and wireless telephone terminals A telephone that performs call control between a telephone terminal and a wireless telephone terminal that are in a coordinated relationship, by commonly assigning a cooperative telephone number consisting of the IP telephone number of the wireless telephone terminal as an individual telephone number of the extension telephone terminal In the system, the router transfers a call control message addressed to the network transmitted from the wireless telephone terminal to the IP telephone network to the telephone control device. The telephone control device includes, among the call control messages addressed to the network transferred from the router, the call control message addressed to the network related to the registration processing of the wireless telephone terminal with respect to the IP telephone network, and is included in the call control message addressed to the network After changing the source address information to the address information of its own device, the call control message addressed to the terminal from the IP telephone network transmitted from the LAN line to the IP telephone network and received from the LAN line accordingly. A transfer control unit is provided that transmits destination address information included in the call control message addressed to the terminal to address information of the wireless telephone terminal, and then transmits the address information to the wireless telephone terminal from the LAN line.

  Also, in one configuration example of the telephone system according to the present invention, the transfer control unit includes a network related to a call processing of the radio telephone terminal to the IP telephone network among the call control messages addressed to the network transferred from the router. For the addressed call control message, the source address information included in the call control message addressed to the network is changed to the address information of its own device, and then transmitted from the LAN line to the IP telephone network, and accordingly, from the LAN line For the received call control message addressed to the terminal from the IP telephone network, the destination address information included in the call control message addressed to the terminal is changed to the address information of the wireless telephone terminal, and then from the LAN line to the wireless telephone terminal. It is intended to be transmitted.

  Also, in one configuration example of the telephone system according to the present invention, the transfer control unit sends an authentication request message from the IP telephone network from the LAN line in response to a call control message addressed to the network transmitted to the IP telephone network. Is received, the transmission destination address information included in the authentication request message is changed to the address information of the wireless telephone terminal, then transmitted from the LAN line to the wireless telephone terminal, and received from the LAN line accordingly. For the call control message addressed to the authenticated network from the wireless telephone terminal, the source address information included in the call control message addressed to the authenticated network is changed to the address information of the own device, and then the IP telephone network is connected from the LAN line. To send to.

Further, examples of the configuration of such the telephone system in the present invention, the transfer control unit, when transmitting the network addressed to a call control message transferred from the router to the front Symbol I P telephone network, the network addressed call control A call control message addressed to the network is transmitted to the IP telephone network only when the wireless telephone terminal that is the message transmission source is a wireless telephone terminal that has been previously set in cooperation with one of the extension telephone terminals. It is what I did.

  In addition, one configuration example of the telephone system according to the present invention is provided in the extension telephone terminal that is linked to the wireless telephone terminal when the call control message addressed to the terminal indicates a successful registration process of the wireless telephone terminal. It further includes a cooperation control unit that assigns a cooperation line key for selecting a cooperation line corresponding to a cooperation telephone number shared between the wireless telephone terminal and the extension telephone terminal to any one of the function keys.

  Also, one configuration example of the telephone system according to the present invention relates to registration update processing of the radio telephone terminal for the IP telephone network in the call control message addressed to the network by the transfer control unit. The call control message addressed to the network is transmitted from the LAN line to the IP telephone network after the source address information included in the call control message addressed to the network is changed to the address information of the own device.

  According to the present invention, the IP telephone network NW can be obtained based on the registration message transmitted from the wireless telephone terminal to the IP telephone network NW only by registering in advance in the telephone control device that the wireless telephone terminal is subject to the cooperation control. When the incoming call request is notified from the IP telephone network NW, the transfer control unit sends a call control message related to the incoming call process to the IP telephone network NW. The address is transferred between the mobile phone and the wireless telephone terminal.

  Therefore, the telephone control device can control the radio telephone terminal and the extension telephone terminal in a coordinated manner without requiring a complicated setting operation for setting the ID and password and without causing the user to feel resistance. it can.

It is a block diagram which shows the structure of the telephone system concerning 1st Embodiment. It is a structural example of terminal cooperation information. It is an external view of an extension telephone terminal. It is a sequence diagram which shows the radio | wireless telephone terminal registration operation | movement of the telephone system concerning 1st Embodiment. It is a sequence diagram which shows the radio | wireless telephone terminal incoming call operation | movement of the telephone system concerning 2nd Embodiment. It is a sequence diagram which shows the extension telephone terminal incoming call operation | movement of the telephone system concerning 2nd Embodiment. It is a sequence diagram which shows the radio | wireless telephone terminal transmission operation | movement of the telephone system concerning 3rd Embodiment. It is a sequence diagram which shows the call terminal switching operation | movement of the telephone system concerning 3rd Embodiment. It is a sequence diagram which shows the registration update operation | movement of the telephone system concerning 4th Embodiment.

Next, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
First, a telephone system 1 according to a first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing the configuration of the telephone system according to the first embodiment.

  The telephone system 1 includes a telephone system such as a business phone or a PBX system, and includes a router RT, a telephone control device 10, an extension telephone terminal 20, a radio base station AP, and a radio telephone terminal 30.

  The telephone control device 10 includes a telephone control device used as a main device of a business phone or a PBX of a PBX system, and accommodates a plurality of extension telephone terminals 20 via an extension line 21 and is connected via a radio base station AP. A plurality of wireless telephone terminals 30 and a function of switching and connecting the extension telephone terminal 20 and the wireless telephone terminal 30 to the IP telephone network NW via the LAN line L1, the router RT, and the network line L2; Among the telephone terminal 20 and the wireless telephone terminal 30, between the extension telephone terminal 20 and the wireless telephone terminal 30 that are registered in advance, a cooperative telephone number consisting of the IP telephone number of the wireless telephone terminal 20 is assigned to the extension. It has a function of performing call control by assigning them in common as individual telephone numbers of telephone numbers. The number of extension telephone terminals 20 and radio telephone terminals 30 is not limited to a plurality, and the present invention can be applied if at least one is accommodated.

  The router RT is a general router that transfers packets between the LAN line L1 and the network line L2, which are IP lines, and is a call control message addressed to the network transmitted from the radio telephone terminal 30 to the IP telephone network NW. Is filtered by destination address information such as an IP address and a MAC address, and transferred to the telephone control device 10. At this time, the call control message to be transferred is a packet addressed to a preset call control server in the IP telephone network NW. Specifically, the registration process of the wireless telephone terminal 30 with respect to the IP telephone network NW, Call control messages addressed to the network related to outgoing processing, incoming processing, etc. are subject to transfer.

The extension telephone terminal 20 is a telephone system such as a business phone or a PBX system, and is a general extension telephone that is placed on a table and used.
The wireless base station AP is a general wireless base station connected to the LAN line L1, and has a function of connecting a plurality of wireless telephone terminals 30 accommodated via the wireless LAN to the LAN line L1.
The radio telephone terminal 30 is a general radio telephone terminal such as a smartphone or a mobile phone, and in addition to a call using a public radio telephone network, for example, an IP telephone number (secondary telephone number) starting with “050” is used for radio communication. It has an IP telephone function for making a call using a LAN.

The IP telephone network NW includes an IP telephone network that provides an IP telephone service by exchanging call control messages with various IP telephone terminals using a plurality of call control servers (not shown).
The partner telephone terminal 40 is a general IP telephone terminal connected to the IP telephone network NW. Specifically, the telephone terminal 40 is a single telephone terminal, an extension telephone terminal accommodated in the telephone system, or a call using a wireless LAN. There are wireless telephone terminals such as smart phones and mobile phones having an IP telephone function.

[Telephone control device]
The telephone control device 10 is provided with a network I / F unit 11, an extension I / F unit 12, a storage unit 13, and a control unit 14 as main functional units.

  The network I / F unit 11 includes an interface circuit for communication, and various call control messages such as outgoing call, incoming call, and registration with the IP telephone network NW via the LAN line L1, the router RT, and the network line L2. Exchanges packets including call voice and various call control messages such as outgoing call, incoming call, registration, etc. between the function of exchanging packets including voice and the radio telephone terminal 30 via the LAN line L1 and the radio base station AP. It has the function to do.

  The extension I / F unit 12 is composed of a dedicated communication circuit and has a function of exchanging data such as call control messages such as outgoing calls and incoming calls and data such as call voices with the extension telephone terminal 20 via the extension line 21. doing.

The storage unit 13 includes a storage device such as a hard disk or a semiconductor memory, and has a function of storing processing data and a program 13P used for control processing in the control unit 14.
The program 13P is a program that implements various processing units by being read and executed by the CPU of the control unit 14.

The main processing data stored in the storage unit 13 is call control data 13A. The call control data 13A includes, for the LAN line L1, the network line L2, the extension telephone terminal 20, and the radio telephone terminal 30, status data indicating various operation states, setting data indicating various setting contents, and the extension telephone terminal 20 And terminal cooperation information indicating a cooperation relationship between the wireless telephone terminal 30 and the like.
FIG. 2 is a configuration example of terminal cooperation information. Here, the extension telephone terminal 20 and the radio telephone terminal 30 are registered as a set for each of the cooperation telephone numbers composed of the IP telephone numbers of the radio telephone terminals 30 used as the cooperation lines. As a result, the IP telephone number of the wireless telephone terminal 30 is assigned as the individual telephone number of the extension telephone terminal 20, that is, the external telephone number (network side telephone number) that can be used individually when making and receiving calls and calls on the extension telephone terminal 20. It is done.

The control unit 14 is composed of a computer having a CPU and its peripheral circuits, and implements various processing units by reading and executing the program 13P of the storage unit 13, and between the IP telephone network NW and the radio telephone terminal 30. Thus, by exchanging various call control messages based on a call control protocol such as SIP (Session Initiation Protocol), and by exchanging control messages based on various control protocols with the extension telephone terminal 20, the extension telephone terminal 20 and a function of performing call control related to the radio telephone terminal 30.
As main processing units realized by the control unit 14, there are a transfer control unit 14A and a cooperation control unit 14B.

  Of the call control messages addressed to the network transferred from the router RT, the transfer control unit 14A, regarding the call control message addressed to the network related to the registration processing of the radio telephone terminal 30 with respect to the IP telephone network NW, the IP included in the call control message addressed to the network. A function of changing source address information such as an address and a MAC address to address information of the own device, a function of transmitting a call control message addressed to the network to which the change is applied, from the LAN line L1 to the IP telephone network NW; Accordingly, for the call control message addressed to the terminal from the IP telephone network NW received from the LAN line L1, the destination address information such as the IP address and MAC address included in the call control message addressed to the terminal is used as the address information of the radio telephone terminal 30. The function to be changed and the call control message addressed to the terminal to which this change is applied are And a function of transmitting from the line L1 to the radio telephone terminal 30.

  When the transfer control unit 14A receives an authentication request message from the IP telephone network NW from the LAN line L1 in response to the call control message addressed to the network transmitted to the IP telephone network NW, the IP address included in the authentication request message A function of changing the destination address information such as the MAC address to the address information of the wireless telephone terminal 30, a function of transmitting an authentication request message to which the change is applied from the LAN line L1 to the wireless telephone terminal 30, and In response to the call control message addressed to the authenticated network from the wireless telephone terminal 30 received from the LAN line L1, the source address information such as the IP address and MAC address included in the call control message addressed to the authenticated network is stored in the local apparatus. A function for changing to address information and a call control message addressed to an authenticated network to which this change is applied Di, and a function of transmitting the LAN line L1 to the IP telephone network NW.

  When the transfer control unit 14A transmits a call control message addressed to the network transferred from the router RT to the IP telephone network NW, the wireless telephone terminal 30 that is a transmission source of the call control message addressed to the network Only when the wireless telephone terminal 30 is set to have a cooperative relationship with any one of 20, it has a function of transmitting a call control message addressed to the network to the IP telephone network NW.

  After the registration processing of the wireless telephone terminal 30 with respect to the IP telephone network NW, the cooperation control unit 14B responds to an incoming call from the LAN line L1 to the cooperative telephone number from the IP telephone network NW, and the extension telephone terminal corresponding to the cooperative telephone number 20 and the wireless telephone terminal 30 and when the call control message addressed to the terminal indicates that the registration process of the wireless telephone terminal 30 is successful, the extension telephone terminal 20 associated with the wireless telephone terminal 30 One of the function keys has a function of assigning a link line key for selecting a link line corresponding to the link phone number shared between the radio telephone terminal 30 and the extension telephone terminal 20.

  FIG. 3 is an external view of the extension telephone terminal. In addition to dial keys, the extension telephone terminal 20 is provided with a plurality of function keys 20A that can be used by arbitrarily assigning various functions. The cooperation control unit 14B assigns the cooperation line key 20B to any one of these function keys 20A. Each function key 20A is provided with a lamp such as an LED for performing display related to the function, and the cooperation control unit 14B controls the display state of the lamp of the cooperation line key 20B to indicate the use state of the cooperation line. Identification display. Thereby, it is possible to notify the user not only of the usage status of the cooperative line by the extension telephone terminal 20 but also the usage status of the cooperative line by the wireless telephone terminal 30 having a cooperative relationship.

[Operation of First Embodiment]
Next, the radio telephone terminal registration operation of the telephone system 1 according to the present embodiment will be described with reference to FIG. FIG. 4 is a sequence diagram showing a radio telephone terminal registration operation of the telephone system according to the first embodiment.
Here, a registration process to the IP telephone network NW by the wireless telephone terminal 30 which is a target for cooperation control will be described.

In order to perform registration processing for the IP telephone network NW, the radio telephone terminal 30 intermittently transmits a call control message related to the registration processing, that is, a registration message (REGISTER) (step 100).
The router RT confirms the transmission destination of the call control message addressed to the network transmitted from the wireless telephone terminal 30, and confirms whether the transmission destination is a preset call control server of the IP telephone network NW (step 101). .
Here, when the destination is the call control server of the IP telephone network NW set in advance, the call control message addressed to the network is transferred to the telephone control apparatus 10 instead of the IP telephone network NW (step 102). If the destination is not a call control server of the IP telephone network NW that is set in advance, the packet is transferred to the IP telephone network NW.

  The transfer control unit 14A of the telephone control device 10 receives the call control message addressed to the network transferred from the router RT via the LAN line L1 and the network I / F unit 11, and performs call control on the call control message addressed to the network. With reference to the terminal cooperation information of the data 13A, the wireless telephone terminal 30 that is the transmission source of the call control message addressed to the network confirms whether or not the cooperation relation with any of the extension telephone terminals 20 is set in advance (step) 103).

Here, when a cooperative relationship is set for the wireless telephone terminal 30 that is the transmission source of the call control message addressed to the network, the source address information included in the call control message addressed to the network is changed to the address information of the own device. (Step 104), the network I / F unit 11 and the LAN line L1 transmit to the IP telephone network NW (step 105).
As a result, a registration message (REGISTER) from the radio telephone terminal 30 whose source is the address of the telephone control device 10 is transmitted to the IP telephone network NW via the router RT and the network line L2. Note that if the linkage relationship is not set, the address information is transmitted to the IP telephone network NW without being changed.

  When the authentication request message (407) is transmitted from the IP telephone network NW to the telephone control apparatus 10 that is the transmission source of the registration request in response to the registration message (REGISTER) (step 110), the transfer control unit 14A Receives the authentication request message (407) via the network line L2, the router RT, the LAN line L1, and the network I / F unit 11. Then, based on the identification information such as the telephone number of the registration request source included in the authentication request message (407), the registration request source radio telephone terminal 30 is specified, and the transmission destination address information of the authentication request message (407). Is changed to the address information of the radio telephone terminal 30 (step 111), and then transmitted from the network I / F unit 11 and the LAN line L1 to the radio telephone terminal 30 via the radio base station AP (step 112).

As a result, the authentication request message (407) from the IP telephone network NW having the address of the telephone control device 10 as the transmission source is transferred to the wireless telephone terminal 30.
In response to this, a registration message with authentication (REGISTER) is called from the wireless telephone terminal 30 as a call control message addressed to the authenticated network including the ID and password for the IP telephone network NW of the wireless telephone terminal 30 required for the authentication processing. It is transmitted to the control device 10 (step 113).
The transfer control unit 14A changes the source address information included in the message to the address information of its own device (step 114) and transmits it to the IP telephone network NW (step 115).

Thereafter, when the authentication is successful in the IP telephone network NW, a call control message addressed to the terminal, here, a registration success message (200 OK) is transmitted from the IP telephone network NW to the telephone control device 10 (step 120).
The transfer control unit 14A transmits the registration success message (200 OK) to the wireless telephone terminal 30 after changing the transmission destination address information to the address information of the wireless telephone terminal 30 (step 121).

  Further, since the registration success message (200 OK) indicates that the registration process of the wireless telephone terminal 30 is successful, the cooperation control unit 14B uses the function key provided in the extension telephone terminal 20 that is in cooperation with the wireless telephone terminal 30. A key assignment message for assigning a link line key for selecting a link line to one of them, and a lamp control message for instructing the lamp corresponding to the link line key to be turned off are sent from the extension I / F unit 12 to the extension line. It transmits to the extension telephone terminal 20 via the line 21 (steps 123 and 124). As a result, the link line key is assigned as one of the function keys of the extension telephone terminal 20, and the lamp is turned off.

[Effect of the first embodiment]
As described above, in the present embodiment, the router RT transfers the call control message addressed to the network transmitted from the radio telephone terminal 30 to the IP telephone network NW to the telephone control device 10, and the transfer control unit 14 </ b> A of the telephone control device 10. However, among the call control messages addressed to the network transferred from the router RT, the source address information included in the message regarding the registration processing of the wireless telephone terminal 30 with respect to the IP telephone network NW has been changed to the address information of the own device. After the call control message addressed to the terminal from the IP telephone network NW transmitted to the IP telephone network NW and received in response thereto, the destination address information included in the message is changed to the address information of the wireless telephone terminal 30 The data is transmitted to the radio telephone terminal 30.

As a result, only by registering in advance in the telephone control device 10 that the wireless telephone terminal 30 is subject to linkage control, the IP address is set based on the registration message (REGISTER) transmitted from the wireless telephone terminal 30 to the IP telephone network NW. Registration processing of the radio telephone terminal 30 with respect to the telephone network NW is performed via the telephone control device 10.
Accordingly, the telephone control device 10 controls the radio telephone terminal 30 and the extension telephone terminal 20 in a coordinated manner without requiring a complicated setting operation for setting an ID and a password and without causing the user to feel resistance. It becomes possible to do.

[Second Embodiment]
Next, a telephone system 1 according to a second embodiment of the present invention will be described with reference to FIG. FIG. 5 is a sequence diagram showing an incoming call operation of the radio telephone terminal of the telephone system according to the second embodiment.
In the present embodiment, a case will be described in which an incoming call request is notified from the IP telephone network NW after the registration processing of the radio telephone terminal 30 for the IP telephone network NW described in the first embodiment is executed.

  In this embodiment, when the transfer control unit 14A of the telephone control device 10 receives a call control message addressed to a terminal related to incoming processing from the LAN line L1 to the linked telephone number from the IP telephone network NW, call control addressed to the terminal. A function of changing the destination address information included in the message to the address information of the radio telephone terminal 30, a function of transmitting a call control message addressed to the terminal to which the change is applied, from the LAN line L1 to the radio telephone terminal 30; In response to the call control message addressed to the network from the wireless telephone terminal 30 received from the LAN line L1, the function for changing the source address information included in the call control message to the address information of the own device and the change are applied. The call control message is transmitted from the LAN line L1 to the IP telephone network NW.

[Operation of Second Embodiment]
Next, with reference to FIG. 5, the radio telephone terminal incoming operation of the telephone system 1 according to the present embodiment will be described.
Here, in response to an incoming request from the IP telephone network NW, a case will be described in which both the extension telephone terminal 20 and the radio telephone terminal 30 that are the subject of linkage control are notified of the incoming call, and the radio telephone terminal 30 responds to the incoming call. .

  When a call control message addressed to the terminal related to the incoming call processing, here, an incoming request message (INVITE) is notified from the IP telephone network NW in response to a call origination operation for the linked telephone number at the other party telephone terminal 40 (step 200) The transfer control unit 14A of the apparatus 10 receives this incoming request message (INVITE) via the network line L2, the router RT, the LAN line L1, and the network I / F unit 11.

Then, the transfer control unit 14A identifies the destination wireless telephone terminal 30 with reference to the terminal cooperation information in the call control data 13A based on the cooperation telephone number indicating the destination included in the incoming request message (INVITE). Then, after the destination address information included in the incoming request message (INVITE) is changed to the address information of the radio telephone terminal 30 (step 201), the network I / F unit 11 and the LAN line L1 are passed through the radio base station AP. To the wireless telephone terminal 30 (step 202).
As a result, the incoming call display is performed on the radio telephone terminal 30 (step 203).

Further, the cooperation control unit 14B refers to the terminal cooperation information in the call control data 13A based on the cooperation telephone number indicating the destination, identifies the extension telephone terminal 20 that is in cooperation with the wireless telephone terminal 30, and the other party telephone An incoming request message indicating an incoming call from the terminal 40 is generated and transmitted to the extension telephone terminal 20 via the extension I / F 12 and the extension line 21 (step 204), and the link line key lamp blinks red (there is an incoming call) ) Is transmitted to the extension telephone terminal 20 (step 205).
As a result, an incoming call is displayed on the extension telephone terminal 20 (step 206). At this time, the lamp of the link line key is displayed in red flashing (with incoming call).

In this way, both the radio telephone terminal 30 and the extension telephone terminal 20 that are in a cooperative relationship display the incoming call, and the radio telephone terminal 30 returns a call control message addressed to the network, here, an incoming message (180). At the same time (step 210), an incoming call message is returned from the extension telephone terminal 20 (step 211).
For the incoming message (180) from the wireless telephone terminal 30, the transfer control unit 14A changes the source address information included in the message to the address information of its own device (step 212), and the incoming message to which this change is applied. (180) is transmitted from the LAN line L1 to the IP telephone network NW (step 213).

Thereafter, when a response operation for the incoming call is performed in the radio telephone terminal 30 before the extension telephone terminal 20 (step 220), a call control message addressed to the network from the radio telephone terminal 30, here a response message (200 OK) is sent. It is transmitted (step 221).
For the response message (200 OK) from the wireless telephone terminal 30, the transfer control unit 14A changes the source address information included in the message to the address information of its own device (step 222), and the response message (200 OK) to which this change is applied. ) Is transmitted from the LAN line L1 to the IP telephone network NW (step 223).

Further, the cooperation control unit 14B refers to the terminal cooperation information of the call control data 13A in response to the response message (200 OK) from the wireless telephone terminal 30, and specifies the extension telephone terminal 20 that is in a cooperative relationship with the wireless telephone terminal 30. Then, an incoming call cancellation message instructing cancellation of the incoming call request is transmitted to the extension telephone terminal 20 (step 224), and a lamp control message for turning on the link line key lamp in orange (during a call on the wireless telephone terminal) is set to the extension telephone. It transmits to the terminal 20 (step 225).
As a result, the incoming call display is stopped at the extension telephone terminal 20 (step 226), and at this time, the lamp of the link line key is displayed in orange (during a call on the wireless telephone terminal).

In this way, an incoming call response at the radio telephone terminal 30 is notified to the IP telephone network NW, and a call is started between the counterpart telephone terminal 40 and the radio telephone terminal 30 (step 227).
During this call, the extension telephone terminal 20 in cooperation with the radio telephone terminal 30 performs a call operation using the cooperation line key (step 230), and a call request message using the cooperation line is transmitted from the extension telephone terminal 20. (Step 231).

The cooperation control unit 14B confirms the use state of the cooperation line designated by the call request message by the call control data 13A (step 232), and in this case, the wireless telephone terminal 30 that is in cooperation with the extension telephone terminal 20 However, since the link line is used, a call rejection message is returned (step 233).
When the number of channels of the cooperation line is 2 or more, after confirming that there is a usable channel, a call request from the extension telephone terminal 20 is notified to the IP telephone network NW. Also good.

[Extension phone terminal incoming call operation]
Next, with reference to FIG. 6, the extension telephone terminal incoming call operation of the telephone system 1 according to the present embodiment will be described. FIG. 6 is a sequence diagram showing an extension telephone terminal incoming call operation of the telephone system according to the second embodiment.
Here, in response to an incoming call from the IP telephone network NW to the linked telephone number, both the extension telephone terminal 20 and the radio telephone terminal 30 that are the subject of linkage control are notified of the incoming call, and the extension telephone terminal 20 responds to the incoming call. The case will be described. Note that the procedure up to step 213 is the same as that in FIG. 5, and the description thereof is omitted here.

After the incoming message (180) is transmitted to the IP telephone network NW, if the extension telephone terminal 20 performs a response operation to the incoming call before the wireless telephone terminal 30 (step 250), the extension telephone terminal 20 A response message is transmitted (step 251).
The transfer control unit 14A generates a response message (200 OK) indicating the response of the extension telephone terminal 20 in response to the response message (200 OK) from the extension telephone terminal 20, and transmits the response message to the IP telephone network NW from the LAN line L1. (Step 252).

  Further, the cooperation control unit 14B refers to the terminal cooperation information of the call control data 13A in response to the response message (200 OK) from the extension telephone terminal 20, and specifies the radio telephone terminal 30 that has a cooperation relationship with the extension telephone terminal 20. Then, an incoming call cancellation message (CANCEL) instructing cancellation of the incoming call request is transmitted from the LAN line L1 to the wireless telephone terminal 30 (step 253). As a result, the incoming call display is stopped at the wireless telephone terminal 30 (step 254).

  Further, the cooperation control unit 14B controls the network I / F unit 11 in response to the response message (200 OK) from the extension telephone terminal 20 to connect the communication path between the partner telephone terminal 40 and the extension telephone terminal 20. Then, a lamp control message for turning on the lamp of the link line key green (during a call of the own terminal) is transmitted to the extension telephone terminal 20 (step 255). As a result, the link line key lamp of the extension telephone terminal 20 is displayed in green (during a call).

In this way, an incoming call response at the extension telephone terminal 20 is notified to the IP telephone network NW, and a call is started between the partner telephone terminal 40 and the extension telephone terminal 20 (step 256).
When a call operation is performed in the radio telephone terminal 30 that is linked to the extension telephone terminal 20 during this call (step 260), a call request message (INVITE) is transmitted from the radio telephone terminal 30 (step 261). ).

The cooperation control unit 14B confirms the use state of the cooperation line designated by the call request message from the call control data 13A (step 262), and the extension telephone terminal 20 that is in cooperation with the radio telephone terminal 30 uses the cooperation line. Since it is used, an outgoing call rejection message is returned (step 263).
When the number of channels of the link line is 2 or more, after confirming that there is a usable channel, a call request from the radio telephone terminal 30 is notified to the IP telephone network NW. Also good.

[Effect of the second embodiment]
As described above, in the present embodiment, when the transfer control unit 14A receives a call control message addressed to a terminal related to the incoming call processing from the LAN line L1 to the linked telephone number from the IP telephone network NW, the call control message addressed to the terminal. A function for changing the destination address information included in the address to the address information of the radio telephone terminal 30, a function for transmitting a call control message addressed to the terminal to which the change is applied, from the LAN line L1 to the radio telephone terminal 30, and In response to the call control message addressed to the network from the wireless telephone terminal 30 received from the LAN line L1, the function of changing the source address information included in the call control message to the address information of the own device and this change were applied. A call control message is transmitted from the LAN line L1 to the IP telephone network NW.

  As a result, after the registration process of the wireless telephone terminal 30 with respect to the IP telephone network NW described in the first embodiment is executed, the transfer control is performed when the incoming request to the linked telephone number is notified from the IP telephone network NW. In unit 14A, the call control message related to the incoming call processing is transferred after IP address conversion between IP telephone network NW and radio telephone terminal 30. Therefore, for example, it is possible to notify both the extension telephone terminal 20 and the radio telephone terminal 30 that are in a cooperative relationship, and to start a call between the telephone terminal that has responded first and the counterpart telephone terminal 40, and to process the incoming call processing. , The extension telephone terminal 20 and the radio telephone terminal 30 can be smoothly coordinated and controlled.

[Third Embodiment]
Next, a telephone system 1 according to a third embodiment of the present invention will be described with reference to FIG. FIG. 7 is a sequence diagram showing a radio telephone terminal transmission operation of the telephone system according to the third embodiment.
In the present embodiment, a case will be described in which a transmission request is notified from the wireless telephone terminal 30 after the registration processing of the wireless telephone terminal 30 for the IP telephone network NW described in the first embodiment is executed.

  In the present embodiment, the transfer control unit 14A of the telephone control device 10 relates to the call control message addressed to the network related to the call processing of the radio telephone terminal 30 to the IP telephone network NW among the call control messages addressed to the network from the router RT. A function of changing the source address information included in the call control message addressed to the network to the address information of the own device, and a function of transmitting the call control message addressed to the network to which the change is applied from the LAN line L1 to the IP telephone network NW And a function to change the destination address information included in the call control message addressed to the terminal from the IP telephone network NW received from the LAN line L1 to the address information of the radio telephone terminal 30 in response to this. Then, a call control message addressed to the terminal to which this change is applied is sent from the LAN line L1 to the wireless telephone terminal. And a function of transmitting to 30.

  Further, the transfer control unit 14 </ b> A transmits the terminal from the extension telephone terminal 20 to the terminal in response to a cooperative line key operation in the extension telephone terminal 20 that is in cooperation with the wireless telephone terminal 30 while the wireless telephone terminal 30 is in a call with the counterpart telephone terminal 40. When a switch request message is transmitted, it has a function of requesting the IP telephone network NW to change the terminal address, and a function of switching the call of the partner telephone terminal 40 from the radio telephone terminal 30 to the extension telephone terminal 20 thereafter. Yes.

[Operation of Third Embodiment]
Next, with reference to FIG. 7, the radio telephone terminal transmission operation of the telephone system 1 according to the present embodiment will be described.
Here, a case will be described in which a call request is notified to the IP telephone network NW in response to a call request from the radio telephone terminal 30 that is the target of cooperation control.

  In the radio telephone terminal 30, when a call operation to the other telephone terminal 40 is performed (step 300), a call control message addressed to the network, here, a call request message (INVITE) is transmitted from the radio telephone terminal 30 (step 301). ).

The router RT confirms the transmission destination of the packet transmitted from the wireless telephone terminal 30, and confirms whether the transmission destination is a preset call control server of the IP telephone network NW (step 302).
Here, if the destination is a preset call control server of the IP telephone network NW, the call control message addressed to the network is transferred to the telephone control apparatus 10 instead of the IP telephone network NW (step 303). If the destination is not a call control server of the IP telephone network NW that is set in advance, the packet is transferred to the IP telephone network NW.

  The transfer control unit 14A of the telephone control device 10 receives the call control message addressed to the network transferred from the router RT via the LAN line L1 and the network I / F unit 11, and performs call control on the call control message addressed to the network. With reference to the terminal cooperation information of the data 13A, the wireless telephone terminal 30 that is the transmission source of the call control message addressed to the network confirms whether or not the cooperation relation with any of the extension telephone terminals 20 is set in advance (step) 304).

  Here, if a cooperative relationship is set for the wireless telephone terminal 30 that is the transmission source of the call control message addressed to the network, the use state of the cooperative line designated by this call request message is indicated by the call control data 13A. Confirm (step 305). Here, when the extension telephone terminal 20 in cooperation with the wireless telephone terminal 30 is using a cooperative line, a call rejection message is returned to the wireless telephone terminal 30 to reject the call.

On the other hand, when the link line is not used, the source address information included in the call control message addressed to the network is changed to the address information of the own device (step 306), and then from the network I / F unit 11 and the LAN line L1. Transmission to the IP telephone network NW (step 307).
As a result, a call request message (INVITE) from the radiotelephone terminal 30 whose source is the address of the telephone control device 10 is transmitted to the IP telephone network NW via the router RT and the network line L2. If it is not set as a target for cooperation control, the address information is transmitted to the IP telephone network NW without being changed.

  When the authentication request message (407) is transmitted from the IP telephone network NW to the telephone control device 10 that is the transmission source of the call request in response to the call request message (INVITE) (step 310), the transfer control unit 14A receives this authentication request message (407) via the network line L2, the router RT, the LAN line L1, and the network I / F unit 11. Then, based on the identification information such as the telephone number of the call originator included in the authentication request message (407), the radio telephone terminal 30 that is the call originator is specified, and the destination address information of the authentication request message (407) Is changed to the address information of the radio telephone terminal 30 (step 311), and then transmitted from the network I / F unit 11 and the LAN line L1 to the radio telephone terminal 30 via the radio base station AP (step 312).

As a result, the authentication request message (407) from the IP telephone network NW having the address of the telephone control device 10 as the transmission source is transferred to the wireless telephone terminal 30.
In response to this, a registration message with authentication (REGISTER) is sent from the wireless telephone terminal 30 as a call control message addressed to the authenticated network including the ID and password for the IP telephone network NW of the wireless telephone terminal 30 necessary for the authentication processing. It is transmitted to the telephone control apparatus 10 (step 313).

The transfer control unit 14A changes the source address information included in the message to the address information of its own device (step 314) and transmits it to the IP telephone network NW (step 315).
Also, the transfer control unit 14A identifies the extension telephone terminal 20 that is in cooperation with the wireless telephone terminal 30 based on the terminal cooperation information in the call control data 13A in response to the transmission of the registration message with authentication, and the cooperation line A lamp control message for turning on the key lamp orange (during a call on the wireless telephone terminal) is transmitted to the extension telephone terminal 20 (step 316).

  As a result, the incoming call display is started at the other party telephone terminal 40, and a call control message addressed to the terminal, here an incoming call message (180) is transmitted from the IP telephone network NW to the telephone control apparatus 10 (step 320). The transfer control unit 14A changes the destination address information of the incoming message (180) to the address information of the wireless telephone terminal 30 (step 321), and then transmits it to the wireless telephone terminal 30 (step 322).

  Thereafter, in response to a response operation at the other party telephone terminal 40, a call control message addressed to the terminal, here a response message (200 OK) is transmitted from the IP telephone network NW to the telephone control apparatus 10 (step 330). ). The transfer control unit 14A changes the transmission destination address information to the address information of the radio telephone terminal 30 (step 331) and transmits the response message (200 OK) to the radio telephone terminal 30 (step 332).

  In this way, an incoming call response at the other party telephone terminal 40 is notified from the IP telephone network NW to the radio telephone terminal 30 via the telephone control device 10, and a call is started between the other party telephone terminal 40 and the radio telephone terminal 30. (Step 333).

[Call terminal switching operation]
Next, the call terminal switching operation of the telephone system 1 according to the present embodiment will be described with reference to FIG. FIG. 8 is a sequence diagram illustrating a call terminal switching operation of the telephone system according to the third embodiment.
Here, in the extension telephone terminal 20 that is linked to the radio telephone terminal 30 during a call between the counterpart telephone terminal 40 and the radio telephone terminal 30, a call terminal that communicates with the other telephone terminal 40 is connected from the radio telephone terminal 30 to the extension. A case of switching to the telephone terminal 20 will be described.

  When the wireless telephone terminal 30 is in a call with the other telephone terminal 40 (step 350), when the terminal switching operation is performed with the cooperation line key in the extension telephone terminal 20 in cooperation with the wireless telephone terminal 30 (step 351). A terminal switching message is transmitted from the extension telephone terminal 20 (step 352).

In response to the terminal switching message, the cooperation control unit 14B sends a media change request message (re-INVITE) for requesting a change of the terminal address (port) for a call between the partner telephone terminal 40 and the wireless telephone terminal 30. It is generated and transmitted to the IP telephone network NW (step 353).
In response, a response message (200 OK) is transmitted from IP telephone network NW to telephone control device 10 (step 354).

  In the router RT, when the telephone control device 10 and the radio telephone terminal 30 are connected via the LAN line L1, dedicated ports are assigned in advance to perform packet transfer control. Therefore, when a packet used for a call with the other party telephone terminal 40 is switched from the radio telephone terminal 30 to the telephone control device 10 (extension telephone terminal 20), the packet transmitted from the IP telephone network NW is included in the destination address. A change regarding the port number on the LAN line L1 side may be requested to the IP telephone network NW by a media change request message (re-INVITE).

  In response to the response message (200 OK) to the media change request message (re-INVITE), the cooperation control unit 14B transmits a disconnect message (BYE) to the wireless telephone terminal 30 (step 355), and then the network I / F. The control unit 11 is controlled to connect the communication path between the other party telephone terminal 40 and the extension telephone terminal 20 and to the extension telephone terminal 20 a lamp control message for turning on the lamp of the link line key green (during a call of the own terminal). Transmit (step 356). As a result, the link line key lamp of the extension telephone terminal 20 is displayed in green (during a call).

  In this way, the call between the partner telephone terminal 40 and the radio telephone terminal 30 is switched to the extension telephone terminal 20, and the call is started between the partner telephone terminal 40 and the extension telephone terminal 20 (step 357). ).

[Effect of the third embodiment]
As described above, according to the present embodiment, the transfer control unit 14A uses the network-related call control message related to the transmission processing of the wireless telephone terminal 30 to the IP telephone network NW among the network-addressed call control messages transferred from the router RT. The source address information included in the call control message addressed to the network is changed to the address information of the own device, and the call control message addressed to the network to which the change is applied is transmitted from the LAN line L1 to the IP telephone network NW. For the call control message addressed to the terminal from the IP telephone network NW received from the LAN line L1, the destination address information included in the call control message addressed to the terminal is changed to the address information of the radio telephone terminal 30, and this change is applied. A call control message addressed to the terminal is transmitted from the LAN line L1 to the wireless telephone terminal 30.

  Thereby, after executing the registration process of the radio telephone terminal 30 for the IP telephone network NW described in the first embodiment, when a call origination request is notified from the radio telephone terminal 30, the transfer control unit 14A makes a call. A call control message related to the process is transferred between the IP telephone network NW and the radio telephone terminal 30 with address conversion. Therefore, even when an authentication request is notified from the IP telephone network NW at the time of outgoing call processing, a complicated setting operation for setting an ID and a password is not required in advance, and the user does not feel resistance. Authentication processing can be executed.

  In the present embodiment, the transfer control unit 14 </ b> A responds to the linked line key operation in the extension telephone terminal 20 that is linked to the wireless telephone terminal 30 while the wireless telephone terminal 30 is in a call with the counterpart telephone terminal 40. When a terminal switching request message is transmitted from the extension telephone terminal 20, the terminal address change is requested to the IP telephone network NW, and thereafter, the call of the partner telephone terminal 40 is switched from the radio telephone terminal 30 to the extension telephone terminal 20. May be.

  As a result, even if the wireless telephone terminal 30 responds to the incoming call from the other party telephone terminal 40 first, it is possible to switch to the extension telephone terminal 20 and make a call with an extremely simple operation of pressing the link line key thereafter. Can do. For this reason, for example, after making a call using the telephone directory of the wireless telephone terminal 30, it is possible to use abundant call services such as hold, transfer, and conference provided by the telephone system 1 with the extension telephone terminal 20.

Further, in the present embodiment, the call operation according to the call request from the radio telephone terminal 30 has been described as an example, but the call operation according to the call request from the extension telephone terminal 20 that is linked to the radio telephone terminal 30. Is equivalent to a call processing in a general telephone system, and a description thereof is omitted here.
In addition, regarding the extension telephone terminal 20 and the radio telephone terminal 30 that are in a cooperative relationship, when one telephone terminal is using the cooperative line, the call using the cooperative line by the other telephone terminal is described with reference to FIG. This is the same as FIG. 6 and will not be described here.

[Fourth Embodiment]
Next, a telephone system 1 according to a fourth embodiment of the present invention will be described with reference to FIG. FIG. 9 is a sequence diagram illustrating a registration update operation of the telephone system according to the fourth embodiment.
In the present embodiment, a case will be described in which a registration update request is notified from the radio telephone terminal 30 after the registration process of the radio telephone terminal 30 with respect to the IP telephone network NW described in the first embodiment is executed.

  In the present embodiment, the transfer control unit 14A of the telephone control device 10 among the call control messages addressed to the network from the router RT, the call control message addressed to the network relating to the registration update processing of the radio telephone terminal 30 for the IP telephone network NW. , The function of changing the source address information included in the call control message addressed to the network to the address information of the own device, and the call control message addressed to the network to which the change is applied are transmitted from the LAN line L1 to the IP telephone network NW. It has a function.

  In addition, even if a predetermined monitoring time elapses after receiving the call control message addressed to the network related to the registration update process from the radio telephone terminal 30, the cooperation control unit 14B creates a new network related to the registration update process from the radio telephone terminal 30. A function of transmitting to the extension telephone terminal 20 a key assignment message for deleting a cooperation line key assigned to the extension telephone terminal 20 associated with the wireless telephone terminal 30 when the addressed call control message is not received; doing.

[Operation of Fourth Embodiment]
Next, the registration update operation of the telephone system 1 according to the present embodiment will be described with reference to FIG.
Here, a case will be described in which a registration update request is notified to the IP telephone network NW in response to a registration update request from the radiotelephone terminal 30 that is the target of cooperation control.

  The wireless telephone terminal 30 intermittently transmits a registration update message (LifeCheck [reREG]) in order to perform a registration update process for the IP telephone network NW after the registration process to the IP telephone network NW (step 400).

The router RT confirms the transmission destination of the packet transmitted from the radio telephone terminal 30, and confirms whether the transmission destination is a preset call control server of the IP telephone network NW (step 401).
Here, when the destination is the call control server of the IP telephone network NW set in advance, the call control message addressed to the network is transferred to the telephone control apparatus 10 instead of the IP telephone network NW (step 402). If the destination is not a call control server of the IP telephone network NW that is set in advance, the packet is transferred to the IP telephone network NW.

  The transfer control unit 14A of the telephone control device 10 receives the call control message addressed to the network transferred from the router RT via the LAN line L1 and the network I / F unit 11, and performs call control on the call control message addressed to the network. With reference to the terminal cooperation information of the data 13A, the wireless telephone terminal 30 that is the transmission source of the call control message addressed to the network confirms whether or not the cooperation relation with any of the extension telephone terminals 20 is set in advance (step) 403).

  Here, when a cooperative relationship is set for the wireless telephone terminal 30 that is the transmission source of the call control message addressed to the network, the call control message addressed to the network is a registration update message (LifeCheck [reREG]). Then, the transfer control unit 14A updates the registration update date and time of the radio telephone terminal 30 stored in the storage unit 13 with the date and time at the time point (step 404), and sends a registration update success message indicating the success of the registration update to the radio communication terminal 14A. It returns to the telephone terminal 30 (step 405).

Further, the transfer control unit 14A changes the source address information included in the call control message addressed to the network from the wireless telephone terminal 30 to the address information of the own device (step 406), and then the network I / F unit 11 and the LAN. Transmission is made from the line L1 to the IP telephone network NW (step 407).
In response to this, a registration update success message (200 OK) is transmitted from the IP phoneprint NW (step 408).

  On the other hand, the cooperation control unit 14B periodically checks the elapsed time after the registration update based on the registration update date and time of the wireless telephone terminal 30 stored in the storage unit 13 (step 410).

  Here, even if this elapsed time has passed from the predetermined monitoring time and the predetermined monitoring time has elapsed after receiving the registration update message from the wireless telephone terminal 30, a new registration update is performed from the wireless telephone terminal 30. When the message is not received (step 411), the cooperation control unit 14B transmits a key assignment message indicating the deletion of the cooperation line key to the extension telephone terminal 20 in cooperation with the wireless telephone terminal 30 ( Step 412).

  Thereby, when the radio telephone terminal 30 moves out of the range of the radio base station AP due to the user's going out or the like, the extension line cannot be used in the extension telephone terminal 20 that is in a cooperative relationship.

[Effect of the fourth embodiment]
As described above, according to the present embodiment, the transfer control unit 14A relates to the network-addressed call control message related to the registration update processing of the radiotelephone terminal 30 for the IP telephone network NW among the call control messages addressed to the network from the router RT. The source address information included in the call control message addressed to the network is changed to the address information of the own apparatus, and then transmitted from the LAN line L1 to the IP telephone network NW.

As a result, the registration update message (LifeCheck [reREG]) transmitted from the wireless telephone terminal 30 to the IP telephone network NW is simply registered in advance in the telephone control device 10 to indicate that the wireless telephone terminal 30 is subject to cooperation control. Based on this, registration update processing of the radio telephone terminal 30 for the IP telephone network NW is performed via the telephone control device 10.
Therefore, cooperative control between the wireless telephone terminal 30 and the extension telephone terminal 20 is performed by the telephone control device 10 without requiring a complicated setting operation for setting an ID and a password and without causing the user to feel resistance. Can be automatically continued.

  Further, in the present embodiment, even if a predetermined monitoring time elapses after the cooperation control unit 14B receives a call control message addressed to the network related to the registration update process from the radio telephone terminal 30, the registration is performed from the radio telephone terminal 30. When a call control message addressed to a new network related to the update process has not been received, a key assignment message for deleting the associated line key assigned to the extension telephone terminal 20 associated with the wireless telephone terminal 30 is sent to the extension telephone terminal 20. You may make it transmit to.

  As a result, when the wireless telephone terminal 30 moves out of the range of the wireless base station AP due to the user's going out or the like, the cooperative line is automatically disabled at the cooperative extension telephone terminal 20, and the cooperative line is managed. High security can be obtained.

[Extended embodiment]
The present invention has been described above with reference to the embodiments, but the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention. In addition, each embodiment can be implemented in any combination within a consistent range.

  In the first to third embodiments, the case where the router RT is formed of a device separate from the telephone control device 10 has been described as an example. However, the present invention is not limited to this. For example, the router RT and the LAN line L1 may be taken in as an internal configuration of the telephone control apparatus 10 and the radio base station AP may be connected to the LAN line. According to such a configuration, various messages exchanged with the router RT in the above description are exchanged inside the telephone control device 10, but the actual operation is the same as described above. The same effects as described above can be obtained.

  At this time, the function of the router RT may be realized by the network I / F unit 11 and the radio base station AP may be connected to the network I / F unit 11 via a LAN line. According to such a configuration, various messages exchanged with the router RT in the above description are replaced with internal control commands between the control unit 14 in the telephone control device 10 and the network I / F unit 11. However, the actual operation is the same as described above, and the same effects as described above can be obtained.

  DESCRIPTION OF SYMBOLS 1 ... Telephone system, 10 ... Telephone control apparatus, 11 ... Network I / F part, 12 ... Extension I / F part, 13 ... Memory | storage part, 13A ... Call control data, 13P ... Program, 14A ... Transfer control part, 14B ... Cooperation control unit, 20 ... extension telephone terminal, 21 ... extension line, 30 ... radio telephone terminal, 40 ... partner telephone terminal, NW ... IP telephone network, L1 ... LAN line, L2 ... network line.

Claims (6)

A telephone control device and a radio base station connected to a LAN line; a router that relay-connects the LAN line and an IP telephone network; and at least one radio telephone terminal connected to the router via the radio base station; The telephone control apparatus accommodates at least one extension telephone terminal, and among the extension telephone terminal and the wireless telephone terminal, between the extension telephone terminal and the wireless telephone terminal that are in a registered relationship in advance, A telephone system that performs call control by commonly assigning a linked telephone number consisting of an IP telephone number of the wireless telephone terminal as an individual telephone number of the extension telephone terminal ,
The router forwards a call control message addressed to the IP telephone network transmitted from the wireless telephone terminal to the telephone control device;
The telephone control device includes, in the call control message addressed to the network, the call control message addressed to the network related to the registration processing of the wireless telephone terminal with respect to the IP telephone network among the call control messages addressed to the network transferred from the router. The source address information to be transmitted to the IP telephone network from the LAN line, and in response to the call control message addressed to the terminal from the IP telephone network received from the LAN line accordingly A telephone system comprising: a transfer control unit configured to change transmission destination address information included in a call control message addressed to the terminal to address information of the wireless telephone terminal, and then transmit the address information to the wireless telephone terminal from the LAN line. . The telephone system according to claim 1, wherein
The transfer control unit includes, among the call control messages addressed to the network transferred from the router, the call control message addressed to the network related to the call processing of the radio telephone terminal for the IP telephone network, and is included in the call control message addressed to the network After changing the source address information to the address information of its own device, the call control message addressed to the terminal from the IP telephone network transmitted from the LAN line to the IP telephone network and received from the LAN line accordingly. A telephone system, wherein the destination address information included in the call control message addressed to the terminal is changed to the address information of the wireless telephone terminal, and then transmitted from the LAN line to the wireless telephone terminal. The telephone system according to claim 1 or 2,
When the transfer control unit receives an authentication request message from the IP telephone network from the LAN line in response to a call control message addressed to the network transmitted to the IP telephone network, a transmission destination address included in the authentication request message After the information is changed to the address information of the wireless telephone terminal, the call control message addressed to the authenticated network from the wireless telephone terminal transmitted from the LAN line to the wireless telephone terminal and received from the LAN line accordingly. The telephone system, wherein the source address information included in the call control message addressed to the authenticated network is changed to the address information of the own apparatus, and then transmitted from the LAN line to the IP telephone network. The telephone system according to any one of claims 1 to 3,
The transfer control unit, when transmitting the network addressed to a call control message transferred from the router to the front Symbol IP telephone network, a wireless telephone terminal as the transmission source of the network addressed to a call control message, advance the extension telephone terminal A telephone system characterized by transmitting a call control message addressed to the network to the IP telephone network only when the wireless telephone terminal is set to have a cooperative relationship with any of the above. The telephone system according to any one of claims 1 to 4,
If the call control message addressed to the terminal indicates that the registration process of the wireless telephone terminal is successful, any one of the function keys of the extension telephone terminal that is linked to the wireless telephone terminal may include these wireless telephone terminal and extension. A telephone system, further comprising a cooperation control unit that assigns a cooperation line key for selecting a cooperation line corresponding to a cooperation telephone number shared between telephone terminals. The telephone system according to any one of claims 1 to 5,
The transfer control unit includes, among the call control messages addressed to the network transferred from the router, the call control message addressed to the network related to the registration update processing of the radiotelephone terminal for the IP telephone network. The telephone system is characterized in that the transmission source address information is changed to the address information of its own apparatus, and then transmitted from the LAN line to the IP telephone network.

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