JP6809261B2 - Telephone control device - Google Patents

Description

The present invention relates to a telephone control technique for making a call from a telephone control device to a remote terminal in response to a call request from a mobile wireless terminal connected via a telephone network and a data communication network.

Conventionally, in telephone systems such as business phones and PBXs, pre-registered mobile wireless phones such as mobile phones and smartphones are accommodated via the mobile phone network and data communication network, and in response to a call request from the mobile wireless terminal. , By calling from the telephone control device to the mobile wireless terminal and the other party's terminal and making a relay connection between the mobile wireless terminal and the other party's terminal, the telephone service is provided from the telephone control device to the mobile wireless terminal even when away from home. (For example, refer to Patent Document 1 and the like). As a result, the call charge of the mobile wireless terminal can be borne by the telephone controller, and even when the mobile wireless terminal is used for business when going out, it is possible to make a call without worrying about the call charge. Become.

Japanese Unexamined Patent Publication No. 2014-120967

"Super Kakeho", au official site, KDDI, https://www.au.com/mobile/charge/smartphone/plan/s-kakeho/

However, in the above-mentioned conventional technology, although the call charge of the mobile phone terminal is reduced, the telephone control device side is burdened with the call charge not only to the other party terminal but also to the mobile phone terminal. There was a problem that it increased.
The present invention is intended to solve such a problem, and an object of the present invention is to provide a telephone control technique capable of reducing a call charge burden not only on the mobile phone terminal side but also on the telephone control device side.

In order to achieve such an object, the telephone control device according to the present invention accommodates the mobile wireless terminal by connecting to a mobile wireless terminal registered in advance via a telephone network and a data communication network. A telephone control device that provides a telephone service, and in response to a call request from the mobile wireless terminal, a first call path is provided between the mobile wireless terminal and the mobile wireless terminal, for which the call charge is free for a certain period of time from the start of the call. After the establishment in, a call is made from the mobile wireless terminal to the designated other party terminal, a other party communication path is established with the other party terminal in response to the response from the other party terminal, and the first communication path is established. A relay processing unit that realizes a voice call between the mobile wireless terminal and the other party terminal by relaying the other party's communication path, and the elapse of the fixed time after the establishment of the first communication path are timed. An update instruction unit that notifies the mobile wireless terminal of an update instruction instructing the mobile wireless terminal to update the call path at the time of the call path update immediately before the call charge of the first call path is switched to a charge after the lapse of a certain period of time. After notifying the update instruction, the first call path is disconnected, and a second call path is newly established in response to a re-call from the mobile wireless terminal in response to the update instruction. The mobile wireless terminal is updated with an update processing unit that relays and connects the second call path and the other party call path, and the call path update time point is described from the notification of the update instruction. It is a time point that goes back from the elapse of the fixed time by the time required for the establishment of the second call path, and is preset in the update instruction unit .

Further, in one configuration example of the telephone control device according to the present invention, after the update processing unit notifies the update instruction, the other party's telephone path is suspended, the first call path is disconnected, and the update is performed. After establishing the second call path by responding to a re-call from the portable wireless terminal in response to the instruction, the hold of the other party call path is released so that the second call path is relayed and connected. It was done.

Further, in one configuration example of the telephone control device according to the present invention, the update processing unit responds to a re-call from the portable wireless terminal in response to the update instruction, so that the first call path is used. The second call path is separately established, the other party call path is switched and connected from the first call path to the second call path, and then the first call path is disconnected. is there.

Further, in one configuration example of the telephone control device according to the present invention, the update instruction unit notifies the mobile wireless terminal of a re-update instruction for instructing the re-update of the telephone path after the completion of the switching connection. By responding to the re-call from the mobile radio terminal in response to the re-update instruction, the update processing unit reestablishes the original first call path with the mobile radio terminal, and the above-mentioned After switching and connecting the other party's call path from the second call path to the first call path, the second call path is disconnected.

According to the present invention, immediately before the call charge of the first call path is switched to the charge, the first call path is disconnected and newly established based on the update instruction from the telephone control device to the mobile wireless terminal. become. Therefore, it is possible to significantly reduce the telephone charges incurred in the first call path between the mobile wireless terminal and the telephone control device, and compared with the conventional callback method, not only on the mobile phone terminal side but also on the mobile phone terminal side. It is possible to reduce the burden of call charges on the telephone control device side.

It is a block diagram which shows the structure of a telephone system. It is the schematic of the call path update operation which concerns on 1st Embodiment. It is a sequence diagram which shows the relay connection operation which concerns on 1st Embodiment. It is a sequence diagram which shows the call path update operation which concerns on 1st Embodiment. It is the schematic of the call path update operation which concerns on 2nd Embodiment. It is a sequence diagram which shows the relay connection operation which concerns on 2nd Embodiment. It is a sequence diagram which shows the call path update operation which concerns on 2nd Embodiment. It is the schematic of the call path update operation which concerns on 3rd Embodiment. It is a sequence diagram which shows the relay connection operation which concerns on 3rd Embodiment. It is a sequence diagram which shows the call path update operation which concerns on 3rd Embodiment.

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

[Telephone system]
The telephone system 1 is composed of a telephone system such as a business phone or a PBX system, and the telephone system 1 is composed of a telephone control device 10, an extension terminal 20, and a mobile wireless terminal 21, and is a public telephone via a communication line L1. It is connected to a general telephone network 31 such as a network (PSTN: Public Switched Telephone Network), ISDN (Integrated Services Digital Network), and IP (Internet Protocol) telephone network, and data such as the Internet via a communication line L2. It is connected to the communication network 32.

The mobile phone networks 33A and 33B are general mobile phone networks such as 3G (3rd generation mobile communication system) and 4G (4th generation mobile communication system) provided by various mobile carriers, and are gateway devices (shown). It is interconnected with the telephone network 31 and the data communication network 32 via (1).
The wireless communication network 34 is a general wireless communication network such as Wi-Fi or a public wireless LAN, and is interconnected with the telephone network 31 and the data communication network 32 via a gateway device (not shown).

When the mobile wireless terminal 21 makes a call with the telephone control device 10 using the mobile phone networks 33A and 33B, the telephone control device is provided via the telephone network 31 by the voice call service of the mobile phone networks 33A and 33B and the telephone network 31. Communication paths PA and PB are established with 10.
On the other hand, when the mobile wireless terminal 21 makes a call with the telephone control device 10 using the wireless communication network 34, the wireless communication network 34 and the data communication network 32 are provided by the IP telephone service of the wireless communication network 34 and the data communication network 32. A communication path PC is established with the telephone control device 10 via the telephone control device 10.

Further, when the mobile wireless terminal 21 uses the mobile phone networks 33A and 33B to perform data communication with the telephone control device 10, the data communication network 32 is provided by a data communication service such as LTE or WiMAX of the mobile phone networks 33A and 33B. A data communication line is established with the telephone control device 10 via the telephone control device 10.
On the other hand, when the mobile wireless terminal 21 uses the wireless communication network 34 to perform data communication with the telephone control device 10, the wireless communication network 34 and the data communication network 32 are provided by the data communication services of the wireless communication network 34 and the data communication network 32. A data communication line is established with the telephone control device 10 via the above.

The communication path connecting the mobile wireless terminal 21 and the telephone control device 10 is not limited to PA, PB, and PC. For example, the IP telephone service of the data communication network 32 may be used to establish a communication path from the mobile telephone networks 33A and 33B via the data communication network 32. Further, the voice call service of the telephone network 31 may be used to establish a communication path from the wireless communication network 34 via the telephone network 31.

In the telephone system 1, the telephone control device 10 is a call control device called a main unit or PBX, and calls the extension terminal 20 by performing data communication with the extension terminal 20 accommodated in the extension line via the extension line LE. It has a function of providing various telephone services such as a voice call between the other party terminal 30 and the extension terminal 20 using the telephone network 31 and a voice call between the extension terminals 20 by controlling the telephone network 31.

The mobile wireless terminal 21 is composed of a mobile terminal such as a smartphone, a tablet, or a mobile phone, and is connected to the telephone control device 10 via the telephone network 31 and the data communication network 32, and the telephone book data provided by the telephone control device 10 is provided. It has the function of using various telephone services such as acquisition service, relay connection service, and authentication service for using these services.

The relay connection service is a service in which a telephone control device 10 calls a remote terminal 30 in response to a call request from the mobile wireless terminal 21 to relay-connect the mobile wireless terminal 21 and the remote terminal 30. As a result, it is possible to make a voice call with the other party terminal 30 via the telephone control device 10 even when going out. By installing software such as a telephone service application on the mobile wireless terminal 21, these telephone services may be made available on the general-purpose mobile wireless terminal 21.

[Principle of the present invention]
In recent years, as a call service for mobile wireless terminals, a mobile carrier has provided a low-charge call service in which a call charge is free if each call is made within a specified time (see, for example, Non-Patent Document 1). .. In such a low-charge call service, there is no limit to the number of calls within a specified time, and once the call is disconnected and reconnected, it can be used repeatedly. Therefore, it is conceivable to reduce the call charge between the mobile wireless terminal and the telephone control device by using such a low-charge call service at the time of the relay connection service.

However, when the call charge between the mobile wireless terminal and the telephone control device is reduced by using such a low-charge call service, the mobile wireless terminal disconnects the call before the specified time elapses from the start of the call. There is a need to. Further, when the call is made beyond the specified time, it is necessary to make a call again and reconnect with the other terminal to continue the call. Therefore, in order to use such a low-priced call service, a large operation burden is generated on the user of the mobile wireless terminal.

In the relay connection service, the telephone control device 10 measures the specified time specified in such a low-charge call service, and the telephone is immediately before the specified time arrives and the call charge is switched to the charge. The control device 10 notifies the mobile wireless terminal 21 of a call path update instruction, then disconnects the call path, and the telephone control device 10 responds to a re-call from the mobile wireless terminal 21 in response to the update instruction. Therefore, a new communication path is established to make a relay connection with the other party terminal 30.

[Telephone control device]
Next, with reference to FIG. 1, the configuration of the telephone control device 10 according to the present embodiment will be described in detail.
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 call control unit 14 as main functional units.

The network I / F unit 11 is composed of a general communication module, and by performing data communication with the telephone network 31 and the other party terminal 30 via the communication line L1, control signals, messages, and calls related to call control are performed. Control signals and messages related to call control, voice signals and voice data related to calls, by performing data communication with the data communication network 32 via the communication line L2 and the function of transmitting and receiving voice signals and voice data related to It has a function to send and receive mail and memo recording data.

The extension I / F unit 12 is composed of a general communication circuit, and has a function of transmitting and receiving a message related to call control and voice data related to a call with the extension terminal 20 connected via the extension line LE. There is.

The storage unit 13 is composed of a storage device such as a hard disk or a semiconductor memory, and contains various call control data 13A used for call control in the call control unit 14 and telephone directory data of users of the extension terminal 20 and the mobile wireless terminal 21. The telephone directory DB 13B registered as a database is stored.

The call control unit 14 includes an arithmetic processing unit realized by the cooperation of a microprocessor and a program, and is provided with various processing units that perform call control. The call control unit 14 is provided with a mobile control unit 14A, a relay processing unit 14B, an update instruction unit 14C, and an update processing unit 14D as main processing units.

The mobile control unit 14A has a function of determining whether or not the mobile wireless terminal is a pre-registered wireless mobile terminal in response to an authentication request from the mobile wireless terminal 21, and responds to a phonebook acquisition request from the mobile wireless terminal 21 after successful authentication. Therefore, it has a function of reading the corresponding telephone directory data from the telephone directory DB 13B of the storage unit 13 and transmitting the corresponding telephone directory data to the mobile wireless terminal 21.

The relay processing unit 14B has a function of establishing a first call path with the mobile wireless terminal 21 in which the call charge is free for a certain period of time from the start of the call in response to the call request from the mobile wireless terminal 21. After the first call path is established, the mobile wireless terminal 21 makes a call to the designated other party terminal 30, establishes the other party call path with the other party terminal 30 in response to the response from the other party terminal 30, and the first call path is established. It has a function of realizing a voice call between the mobile wireless terminal 21 and the other party terminal 30 by relay-connecting the call path and the other party's call path.

The update instruction unit 14C updates the first call path to the mobile wireless terminal 21 at the time of the call path update immediately before the call charge of the first call path is switched to the charge after the establishment of the first call path. It has a function to notify the update instruction to be instructed. Regarding the call path update time point, the time point retroactive from the specified time when the call charge of the first call path is free is calculated for the time required from the notification of the update instruction to the mobile wireless terminal 21 to the completion of the actual call path update. Then, it may be set in advance.

After notifying the update instruction by the update instruction unit 14C, the update processing unit 14D disconnects the first call path and responds to a re-call from the mobile wireless terminal 21 in response to the update instruction to obtain a second call. It has a function of newly establishing a call path and relay-connecting the second call path and the other party's call path.

[Operation of the first embodiment]
Next, the operation of the telephone control device 10 according to the present embodiment will be described with reference to FIGS. 2 to 4. FIG. 2 is a schematic view of the call path updating operation according to the first embodiment. FIG. 3 is a sequence diagram showing a relay connection operation according to the first embodiment. FIG. 4 is a sequence diagram showing a call path updating operation according to the first embodiment.

Here, in response to a call request from the mobile wireless terminal 21, the telephone control device 10 establishes a first call path with the mobile wireless terminal 21 in which the call charge is free for a certain period of time from the start of the call. At the same time, the other party terminal 30 is established with the other party terminal 30, the first call path and the other party call path are relay-connected, and immediately before the call charge of the first call path is switched to the charge. The case where the call path is updated by establishing the second call path after temporarily holding the above and disconnecting the first call path will be described.

Specifically, as shown in FIG. 2, the other party's call path is composed of the other party's call path PX between the other party's terminal 30 connected to the telephone network 31, and the first call path is the mobile wireless network. An example will be described in which the telephone path PA is established via the 33A and the telephone network 31.

The first and second communication paths between the mobile wireless terminal 21 and the telephone control device 10 are not limited to the communication path PA via the mobile phone network 33A, but only for a certain period of time from the start of the call. As long as the call path is free of charge, for example, the call path PB via the mobile phone network 33B may be used. Further, the case where the calling destination of the mobile wireless terminal 21 is the other party terminal 30 connected to the telephone network 31 which is not under the control of the telephone system 1 will be described as an example, but the calling destination is the telephone system 1. Even in the extension terminal 20 under control, the present embodiment can be applied in the same manner, and the same effect can be obtained.

First, as shown in FIG. 3, in response to the login request from the mobile wireless terminal 21 (step 100), the mobile control unit 14A authenticates whether the mobile wireless terminal 21 is a registered terminal, and responds to the successful authentication. Return the login success (step 101). At this time, the mobile wireless terminal 21 and the telephone control device 10 exchange authentication data, telephone book data, and call control data via a data communication line established via the wireless communication network 34 and the data communication network 32. It shall be.
Subsequently, in response to the telephone directory acquisition request from the mobile wireless terminal 21 (step 102), the mobile control unit 14A reads the corresponding telephone directory data from the telephone directory DB 13B of the storage unit 13 and transmits the corresponding telephone directory data to the mobile wireless terminal 21. (Step 103).

After that, in response to a telephone directory call request using the other party's telephone directory registered in the telephone directory data from the mobile wireless terminal 21 (step 104), the relay processing unit 14B is assigned for relay connection. A call instruction including the relay telephone number of the telephone control device 10 is returned to the mobile wireless terminal 21 (step 105).
In response to the call from the mobile wireless terminal 21 to the relay telephone number (step 106), the relay processing unit 14B returns a response (step 107) and communicates with the mobile wireless terminal 21. Establish a PA (first call path) (step 108).

Next, the relay processing unit 14B makes a call to the other party's telephone number indicating the other party's terminal 30 specified in the telephone directory call request from the mobile wireless terminal 21 (step 110), and responds to the response from the other party's terminal 30. Correspondingly (step 111), the other party's telephone path PX is established with the other party terminal 30 (step 112).
After that, the relay processing unit 14B realizes a voice call between the mobile wireless terminal 21 and the other party terminal 30 by relay-connecting the call path PA and the other party's call path PX (step 113).

On the other hand, as shown in FIG. 4, the update instruction unit 14C makes a call after the voice call between the mobile wireless terminal 21 and the other party terminal 30 is started (step 120) and immediately before the call charge of the call path PA is switched to the charge. In response to the arrival of the road update time point (step 121), the mobile wireless terminal 21 is notified of the update instruction instructing the call path update (step 122).
In response to this, in response to the hold request notified from the mobile wireless terminal 21 (step 123), the update processing unit 14D holds the other party's call path PX with the other party terminal 30 (step 124), and the mobile wireless terminal The communication path PA with 21 is disconnected (step 125).

After that, in response to the hold response request notified from the mobile wireless terminal 21 (step 130), the update processing unit 14D issues a call instruction including the relay telephone number of the telephone control device 10 assigned for the relay connection. It is returned to the mobile wireless terminal 21 (step 131).
In response to the call from the mobile wireless terminal 21 to the relay telephone number (step 132), the relay processing unit 14B returns a response (step 133).

After that, the update processing unit 14D releases the hold of the other party's call path PX (step 134), and reestablishes the call path PA (first call path) with the mobile wireless terminal 21 (step 135). By relay-connecting the call path PA and the other party's call path PX (step 136), the voice call between the mobile wireless terminal 21 and the other party terminal 30 is resumed (step 137).

[Effect of the first embodiment]
As described above, in the present embodiment, at the time when the update instruction unit 14C updates the call path immediately before the call charge of the first call path is switched to the charge after the establishment of the first call path with the mobile wireless terminal 21. , The mobile wireless terminal 21 is notified of the update instruction for instructing the update of the call path, and the update processing unit 14D disconnects the first call path after notifying the update instruction and responds to the update instruction. The call path with the mobile wireless terminal 21 is updated by newly establishing a second call path in response to the re-call from the mobile wireless terminal 21, and the new second call path and the other party's call path are relayed. It is intended to be connected.

As a result, immediately before the call charge of the first call path is switched to the charge, the first call path is disconnected and newly established based on the update instruction from the telephone control device 10 to the mobile wireless terminal 21. Become. Therefore, it is possible to significantly reduce the telephone charges generated in the first call path between the mobile wireless terminal 21 and the telephone control device 10, and only the mobile phone terminal 21 side is compared with the conventional callback method. Instead, it is possible to reduce the burden of call charges on the telephone control device 10 side.

Further, in the present embodiment, after notifying the mobile wireless terminal 21 of the update instruction, the update processing unit 14D suspends the other party's call path, disconnects the first call path, and carries the mobile phone in response to the update instruction. After establishing a new second call path by answering the re-call from the wireless terminal 21, the hold of the other party call path may be released to make a relay connection with the new second call path.
As a result, the original first telephone network that established the first communication path can be reused as the second communication path, and it is not necessary to separately use a mobile phone network different from the first telephone network. Therefore, even a general mobile wireless terminal 21 that has only a service contract with one mobile carrier can update the communication path between the mobile wireless terminal 21 and the telephone control device 10.

[Second Embodiment]
Next, the telephone system 1 according to the second embodiment of the present invention will be described with reference to FIG. FIG. 5 is a schematic view of the call path updating operation according to the second embodiment.
In the first embodiment, as a specific example of updating the first communication path between the mobile wireless terminal 21 and the telephone control device 10, the telephone control device 10 temporarily suspends the other party's communication path with the other party terminal 30. Then, the case of updating the first communication path with the mobile wireless terminal 21 has been described as an example.
In the present embodiment, when updating the first call path, the telephone control device 10 sets the first call path to the mobile wireless terminal 21 and the second call path separately from the first call path. Will be described as an example in the case where is newly established and updated by switching the other party's call path from the first call path to the second call path.

That is, in the present embodiment, the update processing unit 14D is different from the first telephone network used in the first call path by responding to the re-call from the portable wireless terminal 21 in response to the update instruction. A function of establishing a second call path using the second telephone network and a function of switching the other call path from the first call path to the second call path and then disconnecting the first call path. Have.
The other configurations in the present embodiment are the same as those in the first embodiment, and the description thereof will be omitted here.

[Operation of the second embodiment]
Next, the operation of the telephone control device 10 according to the present embodiment will be described with reference to FIGS. 5 to 7. FIG. 6 is a sequence diagram showing a relay connection operation according to the second embodiment. FIG. 7 is a sequence diagram showing a call path updating operation according to the second embodiment.

Here, in response to a call request from the mobile wireless terminal 21, the telephone control device 10 establishes a first call path with the mobile wireless terminal 21 in which the call charge is free for a certain period of time from the start of the call. At the same time, a mobile wireless terminal is established immediately before the other party's call path is established, the first call path and the other party's call path are relayed, and the call charge of the first call path is switched to a charge. A second call path is newly established with the 21 call path separately from the first call path, and the other call path is switched from the first call path to the second call path to connect to the call path. After that, a third call path is newly established separately from the second call path, and the other call path is switched from the second call path to the third call path for connection. The case of updating the call path will be described.

Specifically, as shown in FIG. 5, the other party's call path is composed of the other party's call path PX with the other party terminal 30 connected to the telephone network 31, and the first call path is the mobile wireless network. The second call path consists of the mobile radio network 33B and the call path PB established via the telephone network 31, and the third call path consists of the call path PA established via 33A and the telephone network 31. An example will be described in which the call path PA (first call path) reestablished via the mobile wireless network 33A and the telephone network 31 is formed, and the call charge of the second call path is always charged. At this time, it is assumed that the mobile wireless terminal 21 is compatible with dual SIM and has a contract with two mobile carriers.

The first call path between the mobile wireless terminal 21 and the telephone control device 10 is not limited to the call path PA via the mobile phone network 33A, and the call charge is charged only for a certain period of time from the start of the call. As long as it is a free call path, it may be a call path PB via the mobile phone network 33B, for example. Further, the case where the calling destination of the mobile wireless terminal 21 is the other party terminal 30 connected to the telephone network 31 which is not under the control of the telephone system 1 will be described as an example, but the calling destination is the telephone system 1. Even in the extension terminal 20 under control, the present embodiment can be applied in the same manner, and the same effect can be obtained.

First, as shown in FIG. 6, in response to the login request from the mobile wireless terminal 21 (step 200), the mobile control unit 14A authenticates whether the mobile wireless terminal 21 is a registered terminal, and responds to the successful authentication. Return the login success (step 201). At this time, the mobile wireless terminal 21 and the telephone control device 10 exchange authentication data, telephone book data, and call control data via a data communication line established via the wireless communication network 34 and the data communication network 32. It shall be.
Subsequently, in response to the telephone directory acquisition request from the mobile wireless terminal 21 (step 202), the mobile control unit 14A reads the corresponding telephone directory data from the telephone directory DB 13B of the storage unit 13 and transmits the corresponding telephone directory data to the mobile wireless terminal 21. (Step 203).

After that, in response to a telephone directory call request using the other party's telephone number registered in the telephone directory data from the mobile wireless terminal 21 (step 204), the relay processing unit 14B is assigned for relay connection. A call instruction including the relay telephone number of the telephone control device 10 is returned to the mobile wireless terminal 21 (step 205).
In response to the call from the mobile wireless terminal 21 to the relay telephone number (step 206), the relay processing unit 14B returns a response (step 207) and communicates with the mobile wireless terminal 21. Establish a PA (first call path) (step 208).

Next, the relay processing unit 14B makes a call to the other party's telephone number indicating the other party's terminal 30 specified in the telephone directory call request from the mobile wireless terminal 21 (step 210), and responds to the response from the other party's terminal 30. Correspondingly (step 211), the other party's telephone path PX is established with the other party terminal 30 (step 212).
After that, the relay processing unit 14B realizes a voice call between the mobile wireless terminal 21 and the other party terminal 30 by relay-connecting the call path PA and the other party's call path PX (step 213).

On the other hand, as shown in FIG. 7, the update instruction unit 14C makes a call after the voice call between the mobile wireless terminal 21 and the other party terminal 30 is started (step 220) and immediately before the call charge of the call path PA is switched to the charge. In response to the arrival of the road update time point (step 221), the mobile wireless terminal 21 is notified of the update instruction instructing the update of the call path (step 222).
In response to the call from the mobile wireless terminal 21 to the relay telephone number (step 223), the update processing unit 14D returns a response (step 224) to the mobile wireless terminal 21. Establish a call path PB (second call path) (step 225).

Subsequently, the update processing unit 14D switches and connects the other party's call path PX with the other party terminal 30 from the call path PA (first call path) to the call path PB (second call path) (step 226). ), The voice call between the mobile wireless terminal 21 and the other party terminal 30 is continued (step 227), and the communication path PA with the mobile wireless terminal 21 is disconnected (step 228).

After disconnecting the call path PA, the update instruction unit 14C notifies the mobile wireless terminal 21 of an update instruction instructing the update of the call path PB (step 230).
In response to the call from the mobile wireless terminal 21 to the relay telephone number (step 231), the update processing unit 14D returns a response (step 232) to the mobile wireless terminal 21. The call path PA (first call path) is reestablished (step 233).

After that, the update processing unit 14D switches and connects the other party's call path PX with the other party terminal 30 from the call path PB (second call path) to the call path PA (first call path) (step 234). ), The voice call between the mobile wireless terminal 21 and the other party terminal 30 is continued (step 235), and the communication path PB with the mobile wireless terminal 21 is disconnected (step 236).

[Effect of the second embodiment]
As described above, in the present embodiment, the update processing unit 14D responds to the re-call from the portable wireless terminal 21 in response to the update instruction, so that the second call path is set separately from the first call path. After establishing and switching and connecting the other party's call path from the first call path to the second call path, the first call path is disconnected.

As a result, the first call path and the second call path are temporarily established in parallel, so that the other call path is instantaneously switched and connected from the first call path to the second call path. Can be done. Therefore, unlike the first embodiment, it is not necessary to temporarily hold the other party's call path, so that the call path can be updated with almost no interruption in the voice call.

Further, in the present embodiment, the update instruction unit 14C re-updates the call path to the mobile wireless terminal 21 after completing the switching connection from the first call path to the second call path to the other party call path. By notifying the re-update instruction to be instructed and the update processing unit 14D responding to the re-call from the mobile wireless terminal 21 in response to the re-update instruction, the third call path is set separately from the second call path. It may be established with the mobile wireless terminal 21, and after switching and connecting the other party's call path from the second call path to the third call path, the second call path may be disconnected. Further, after that, the process of switching and connecting the other party's call path from the third call path to the second call path and then switching and connecting to the third call path again is repeated according to the arrival of the call path update time. It may be.

As a result, the period during which the second call path is used can be shortened, and even when the voice call on the second call path is charged, the required call charge can be suppressed. At this time, if the call charge for the second call path is always charged, the mobile wireless terminal 21 is immediately charged upon completion of the switching connection from the first call path to the second call path. By notifying the renewal instruction of instructing the renewal of the call path, the required call charge can be minimized. Further, as the third call path, the original first call path or the same call path as the first call path in which the call charge is free for a certain period of time from the start of the call is used, so that after the renewal. Call charges can be significantly reduced.

[Third Embodiment]
Next, the telephone system 1 according to the third embodiment of the present invention will be described with reference to FIG. FIG. 8 is a schematic view of the call path updating operation according to the third embodiment.
In the first embodiment, as a specific example of updating the first communication path between the mobile wireless terminal 21 and the telephone control device 10, the telephone control device 10 temporarily suspends the other party's communication path with the other party terminal 30. Then, the case of updating the first communication path with the mobile wireless terminal 21 has been described as an example.
In the present embodiment, when updating the first call path, the telephone control device 10 makes a second call path between the first call path and the mobile wireless terminal 21 for an IP telephone different from the first call path. An example will be described in which a new call path is established and the other party call path is updated by switching from the first call path to the second call path.

That is, in the present embodiment, the update processing unit 14D responds to the re-call from the mobile wireless terminal 21 in response to the update instruction, so that the IP is different from the first telephone network used in the first call path. It has a function of establishing a second call path for a telephone and a function of disconnecting the first call path after switching and connecting the other party path from the first call path to the second call path. ..
The other configurations in the present embodiment are the same as those in the first embodiment, and the description thereof will be omitted here.

[Operation of the third embodiment]
Next, the operation of the telephone control device 10 according to the present embodiment will be described with reference to FIGS. 8 to 10. FIG. 9 is a sequence diagram showing a relay connection operation according to the third embodiment. FIG. 10 is a sequence diagram showing a call path updating operation according to the third embodiment.

Here, in response to a call request from the mobile wireless terminal 21, the telephone control device 10 establishes a first call path with the mobile wireless terminal 21 in which the call charge is free for a certain period of time from the start of the call. At the same time, a mobile wireless terminal is established immediately before the other party's call path is established, the first call path and the other party's call path are relayed, and the call charge of the first call path is switched to a charge. When a second call path is newly established with 21 using the IP telephone service and the call charge is free, and the call path is updated by switching the other party's call path PX from PA to PC. Will be described.

Specifically, as shown in FIG. 8, the other party's call path is composed of the other party's call path PX with the other party terminal 30 connected to the telephone network 31, and the first call path is the mobile wireless network. The second communication path is composed of a communication path PC for an IP telephone established via the wireless communication network 34 and the data communication network 32, and is composed of a communication path PA established via 33A and the telephone network 31. An example in which the call path 3 is composed of a call path PA (first call path) reestablished via the mobile wireless network 33A and the telephone network 31, and the call charge of the third call path is always free. It is explained as.

The first call path between the mobile wireless terminal 21 and the telephone control device 10 is not limited to the call path PA via the mobile phone network 33A, and the call charge is charged only for a certain period of time from the start of the call. As long as it is a free call path, it may be a call path PB via the mobile phone network 33B, for example. Further, the case where the calling destination of the mobile wireless terminal 21 is the other party terminal 30 connected to the telephone network 31 which is not under the control of the telephone system 1 will be described as an example, but the calling destination is the telephone system 1. Even in the extension terminal 20 under control, the present embodiment can be applied in the same manner, and the same effect can be obtained.

First, as shown in FIG. 9, in response to the login request from the mobile wireless terminal 21 (step 300), the mobile control unit 14A authenticates whether the mobile wireless terminal 21 is a registered terminal, and responds to the successful authentication. Return the login success (step 301). At this time, the mobile wireless terminal 21 and the telephone control device 10 exchange authentication data, telephone book data, and call control data via a data communication line established via the wireless communication network 34 and the data communication network 32. It shall be.
Subsequently, in response to the telephone directory acquisition request from the mobile wireless terminal 21 (step 302), the mobile control unit 14A reads the corresponding telephone directory data from the telephone directory DB 13B of the storage unit 13 and transmits the corresponding telephone directory data to the mobile wireless terminal 21. (Step 303).

After that, in response to the telephone directory call request using the other party's telephone directory registered in the telephone directory data from the mobile wireless terminal 21 (step 304), the relay processing unit 14B is assigned for relay connection. A call instruction including the relay telephone number of the telephone control device 10 is returned to the mobile wireless terminal 21 (step 305).
In response to the call from the mobile wireless terminal 21 to the relay telephone number (step 306), the relay processing unit 14B returns a response (step 307) and communicates with the mobile wireless terminal 21. Establish a PA (first call path) (step 308).

Next, the relay processing unit 14B makes a call to the other party's telephone number indicating the other party's terminal 30 specified in the telephone directory call request from the mobile wireless terminal 21 (step 310), and responds to the response from the other party's terminal 30. Correspondingly (step 311), the other party's telephone path PX is established with the other party's terminal 30 (step 312).
After that, the relay processing unit 14B realizes a voice call between the mobile wireless terminal 21 and the other party terminal 30 by relay-connecting the call path PA and the other party's call path PX (step 313).

On the other hand, as shown in FIG. 10, the update instruction unit 14C makes a call after the voice call between the mobile wireless terminal 21 and the other party terminal 30 is started (step 320) and immediately before the call charge of the call path PA is switched to the charge. In response to the arrival of the road update time point (step 321), the mobile wireless terminal 21 is notified of the update instruction for instructing the update of the call path (step 322).
In response to the call from the mobile wireless terminal 21 to the relay telephone number (step 323), the update processing unit 14D returns a response (step 324) to the mobile wireless terminal 21. A call path PC (second call path) is established (step 325).

Subsequently, the update processing unit 14D switches and connects the other party's call path PX with the other party terminal 30 from the call path PA (first call path) to the call path PC (second call path) (step 326). ), The voice call between the mobile wireless terminal 21 and the other party terminal 30 is continued (step 327), and the communication path PA with the mobile wireless terminal 21 is disconnected (step 328).

After disconnecting the call path PA, the update instruction unit 14C notifies the mobile wireless terminal 21 of an update instruction instructing the update of the call path PC (step 330).
In response to the call from the mobile wireless terminal 21 to the relay telephone number (step 331), the update processing unit 14D returns a response (step 332) to the mobile wireless terminal 21. The call path PA (first call path) is reestablished (step 333).

After that, the update processing unit 14D switches and connects the other party's call path PX with the other party terminal 30 from the call path PC (second call path) to the call path PA (first call path) (step 334). ), The voice call between the mobile wireless terminal 21 and the other party terminal 30 is continued (step 335), and the communication path PC with the mobile wireless terminal 21 is disconnected (step 336).

[Effect of the third embodiment]
As described above, in the present embodiment, the update processing unit 14D responds to the re-call from the mobile wireless terminal 21 in response to the update instruction, so that the second call path for the IP telephone is separated from the first call path. The call path is established, the other party's call path is switched from the first call path to the second call path, and then the first call path is disconnected.

As a result, the first call path and the second call path are temporarily established in parallel, so that the other call path is instantaneously switched and connected from the first call path to the second call path. Can be done. Therefore, unlike the first embodiment, it is not necessary to temporarily hold the other party's call path, so that the call path can be updated with almost no interruption in the voice call. Further, since the second call path is for an IP phone, the call quality is lower than that of the first call path using the mobile phone network, but the call charge is basically free, so the call path. It will be possible to make the required call charges free even after updating.

Further, in the present embodiment, the update instruction unit 14C re-updates the call path to the mobile wireless terminal 21 after completing the switching connection from the first call path to the second call path to the other party call path. By notifying the re-update instruction to be instructed and the update processing unit 14D responding to the re-call from the mobile wireless terminal 21 in response to the re-update instruction, the third call path is set separately from the second call path. It may be established with the mobile wireless terminal 21, and after switching and connecting the other party's call path from the second call path to the third call path, the second call path may be disconnected. Further, after that, the process of switching and connecting the other party's call path from the third call path to the second call path and then switching and connecting to the third call path again is repeated according to the arrival of the call path update time. It may be.

As a result, the period during which the second call path is used can be shortened, and even if the voice call of the second call path is a call path for an IP telephone with low call quality, the third call path The call quality can be restored by using the same or equivalent call path as the original first call path using the mobile phone network. Further, by using the same or equivalent call path as the first call path in which the call charge is free for a certain period of time from the start of the call as the third call path, the call charge after the renewal can be significantly reduced.

Further, upon completion of the switching connection from the first call path to the second call path, the mobile wireless terminal 21 is immediately notified of the re-update instruction for instructing the re-update of the call path. Good. In particular, in the case of a mobile carrier that disconnects the voice call on the IP phone line in order to give priority to the incoming call from the mobile phone network during the voice call on the IP phone line. , The time to use the second call path can be shortened to the minimum, and the call disconnection due to the incoming call from the mobile phone network can be avoided.

[Extension of Embodiment]
Although the present invention has been described above with reference to the embodiments, 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 structure 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.

Further, in each of the above-described embodiments, regarding the start of the call path update process, the update instruction unit 14C of the telephone control device 10 notifies the mobile wireless terminal 21 of the update instruction according to the arrival of the call path update time. Although the case of doing so has been described as an example, the present invention is not limited to this. For example, the mobile wireless terminal 21 may autonomously make a call to the telephone control device 10 after the first call path is established and when the call path update time arrives.

Further, in each of the above-described embodiments, when the telephone control device 10 provides the relay connection service in parallel to the plurality of mobile wireless terminals 21, the telephone directory call request from the mobile wireless terminals 21 is received. It is necessary to associate with the call to the telephone control device 10. In such a case, the association may be performed based on the identification information of the mobile wireless terminal 21 acquired at the time of the authentication process of the mobile wireless terminal 21 or the telephone directory call request, for example, the telephone number of the mobile wireless terminal 21.

Further, in the first embodiment described above, after suspending the other party's call path, the second call path (PA) using the same mobile phone network as the first call path (PA) is reestablished. The case of relay connection with the other party's call path that has been released from hold has been described as an example, but the second call path is not limited to the call path using the same mobile phone network as the first call path (PA). Absent. For example, it may be a call path (PB) using a mobile phone network different from the first call path, or may be a call path (PC) for an IP telephone.

1 ... Telephone system, 10 ... Telephone control device, 11 ... Network I / F unit, 12 ... Extension I / F unit, 13 ... Storage unit, 13A ... Call control data, 13B ... Telephone book DB, 14 ... Call control unit, 14A ... mobile control unit, 14B ... relay processing unit, 14C ... update instruction unit, 14D ... update processing unit, 20 ... extension terminal, 21 ... mobile wireless terminal, 30 ... partner terminal, 31 ... telephone network, 32 ... data communication network , 33A ... Mobile phone network (A), 33B ... Mobile phone network (B), 34 ... Wireless communication network, L1, L2 ... Communication line, LE ... Extension line, PA, PB, PC ... Call path, PX ... Road.

Claims (4)

A telephone control device that accommodates the mobile wireless terminal and provides a telephone service by connecting to a pre-registered mobile wireless terminal via a telephone network and a data communication network.
In response to a call request from the mobile wireless terminal, a first call path is established with the mobile wireless terminal so that the call charge is free for a certain period of time from the start of the call, and then designated by the mobile wireless terminal. By making a call to the other party terminal, establishing the other party's call path with the other party terminal in response to the response from the other party terminal, and relay-connecting the first call path and the other party's call path. A relay processing unit that realizes a voice call between a mobile wireless terminal and the other party terminal,
After the establishment of the first call path, the passage of the fixed time is timed, and at the time of the call path update immediately before the fixed time elapses and the call charge of the first call path is switched to the charge, the mobile radio An update instruction unit that notifies the terminal of an update instruction that instructs the terminal to update the call path,
After notifying the update instruction, the first call path is disconnected, and a second call path is newly established in response to a re-call from the mobile wireless terminal in response to the update instruction. It is provided with an update processing unit that updates the call path with the mobile wireless terminal and relay-connects the second call path and the other party call path .
The call path update time point is a time point that goes back from the elapse of the fixed time by the time required from the notification of the update instruction to the establishment of the second call path, and is preset in the update instruction unit. A telephone control device characterized by. In the telephone control device according to claim 1,
After notifying the update instruction, the update processing unit suspends the other party's call path, disconnects the first call path, and responds to a reissue call from the mobile wireless terminal in response to the update instruction. A telephone control device characterized by releasing the hold of the other party's telephone path and making a relay connection with the second telephone path after establishing the second telephone path. In the telephone control device according to claim 1,
The update processing unit establishes the second call path separately from the first call path by responding to the re-call from the portable wireless terminal in response to the update instruction, and the other party call path. A telephone control device, characterized in that, after switching and connecting from the first communication path to the second communication path, the first communication path is disconnected. In the telephone control device according to claim 3,
After the switching connection is completed, the update instruction unit notifies the mobile wireless terminal of a re-update instruction instructing the re-update of the telephone path.
By responding to the re-call from the mobile radio terminal in response to the re-update instruction, the update processing unit reestablishes the original first call path with the mobile radio terminal, and the other party A telephone control device comprising switching and connecting a communication path from the second communication path to the first communication path and then disconnecting the second communication path.

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