JP2014120970A - Telephone control device and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To record an incoming history on a radio terminal if a response to an incoming call from a telephone network by a radio terminal becomes unnecessary and calling is canceled.SOLUTION: After transmitting a calling message to a radio terminal 30 using a communication channel in response to an incoming call from a telephone network NW1, and before a calling message is returned from the radio terminal 30 according to the calling message, if the incoming cancellation of the incoming call is notified from the telephone network NW1, a call control unit 14B, after confirming the reception of the calling message returned from the radio terminal 30, transmits to the radio terminal 30 a disconnection message to cancel the calling according to the calling message.

Description

  The present invention relates to a telephone control technique, and more particularly to a call control technique for recording an incoming call history related to an incoming call from a telephone network in a wireless terminal accommodated in the telephone control apparatus.

  Conventionally, in a telephone system such as a business phone or a PBX system, a telephone control device including a main device or a PBX is connected to a wireless terminal such as a smartphone or a mobile phone via a wireless communication network, and the extension terminal is connected to the wireless terminal. Has been proposed (see, for example, Patent Document 1).

JP 2002-101437 A

  In such a telephone system according to the prior art, similarly to the extension terminal, an incoming call from the telephone network can be notified to a wireless terminal connected to the telephone control device. Such an incoming call notification function for a wireless terminal is, for example, an extension terminal and a wireless terminal included in the terminal group in response to a group incoming call from the telephone network in which a terminal group including an extension terminal and a wireless terminal is designated as a destination. This is used when notifying the terminal of an incoming call, or when setting to transfer the incoming call to the extension terminal to the wireless terminal when leaving the seat.

Here, in the telephone system according to the prior art, when the incoming call is notified to the wireless terminal, first, the telephone control device captures an empty line and calls the wireless terminal via the wireless telephone network.
At this time, if congestion occurs in the wireless communication network, or if the wireless terminal is located outside the radio range or in a place where radio waves are difficult to reach, a delay occurs in calling. If there is no free line, the system waits until a free line is generated, causing a delay in calling. In addition, when the wireless terminal is in a call, an incoming call cannot be notified.

If there is a certain delay when calling the wireless terminal, or if the incoming call cannot be notified, the wireless terminal does not need to respond to the incoming call from the telephone network, and the telephone control device calls the wireless terminal. May be canceled.
For example, when a call stop operation is performed at the calling terminal, the telephone control device stops calling the wireless terminal in response to canceling the incoming call from the telephone network. In addition, when the extension terminal that is calling in parallel with the wireless terminal responds first, the calling of the wireless terminal is stopped.
Therefore, unnecessary calls to the wireless terminal can be avoided by canceling calls to the wireless terminal.

However, when the incoming call from the telephone network is no longer required and the response to the wireless terminal is not required, and the call to the wireless terminal is stopped, the incoming call history regarding the incoming call from the telephone network may not be recorded in the wireless terminal.
In other words, the incoming call history at the wireless terminal is not recorded at the wireless terminal because the incoming call history is recorded at the wireless terminal only after the call reaches the wireless terminal, as with a general telephone device. In this case, the incoming call history is not recorded in the wireless terminal. Accordingly, the wireless terminal user cannot know that there is an incoming call from the telephone network and cannot take an appropriate response to the incoming call.

  The present invention is for solving such a problem, and even when the call of the wireless terminal is canceled in response to the cancellation of the incoming call from the telephone network, the history of the incoming call can be reliably recorded in the wireless terminal. It aims to provide call control technology.

  In order to achieve such an object, a telephone control apparatus according to the present invention is a telephone control apparatus that exchanges and connects a wireless terminal connected via a wireless communication network to a plurality of telephone lines connected to the telephone network. A network I / F unit for establishing a communication line with the wireless terminal via the wireless communication network, and a call for notifying the wireless terminal of the incoming call in response to an incoming call from the telephone network After the message is transmitted to the wireless communication network using the communication line, the call message indicating that the call is being made at the wireless terminal is returned from the wireless communication network in response to the call message. When the incoming call cancellation is notified for the incoming call from the network, a disconnect message for canceling the calling of the wireless terminal is transmitted to the wireless communication network in response to the confirmation of the reception of the calling message thereafter. And a call control unit.

  Also, in one configuration example of the telephone control device according to the present invention, when the call control unit stops the transmission of the call message when the wireless terminal is out of service area at the time of the incoming call, When the communication line is established with the wireless terminal by the network I / F unit, the call message is transmitted to the wireless communication network, and the ringing message corresponding thereto is transmitted. The disconnect message is transmitted in response to the reception confirmation.

  Further, in the configuration example of the telephone control device according to the present invention, when the call control unit stops the transmission of the call message because the wireless terminal is talking through the telephone control device at the time of the incoming call. Transmits the call message to the wireless terminal when the call of the wireless terminal is terminated after the cancellation of the incoming call is notified, and disconnects in response to the reception confirmation of the in-call message in response thereto A message is sent.

  Also, in one configuration example of the telephone control device according to the present invention, the call control unit calls the radio terminal from the radio communication network in response to the call message transmitted to the radio terminal in response to the incoming call. When a busy message indicating that the call is in progress is received, the incoming call inquiry message is notified from the wireless terminal via the communication line after the incoming call cancellation is notified. A new call message for notifying an incoming call is transmitted to the wireless communication network, and the disconnect message is transmitted in response to the reception confirmation of the in-call message.

  Also, in one configuration example of the telephone control device according to the present invention, the call control unit measures the incoming date and time when the incoming call is notified and the incoming time from the notification of the incoming call to the cancellation of the incoming call, When the call message is transmitted to the wireless terminal after notification of cancellation of the incoming call from the telephone network, the reception date and time and the incoming time are notified to the wireless terminal by the call message.

  Further, the program according to the present invention is a program for causing a computer to function as each unit constituting any one of the above-described telephone control devices.

According to the present invention, the disconnect message is not immediately transmitted to the wireless terminal in response to the cancellation of the incoming call from the telephone network, but is disconnected in response to the reception confirmation of the in-call message indicating the in-call state at the wireless terminal. A message is transmitted to notify the wireless terminal of the termination of the incoming call.
Therefore, in the wireless terminal, in response to an incoming message from the wireless communication network, a ringing message is returned and an incoming history is recorded, and then a disconnect message arrives from the wireless communication network. For this reason, even when the call of the wireless terminal is canceled in response to the cancellation of the incoming call from the telephone network, the incoming call history can be reliably recorded in the wireless terminal.

It is a block diagram which shows the structure of the telephone control apparatus concerning 1st Embodiment. It is a structural example of the status data which shows the line state of a telephone line. It is a structural example of the setting data regarding a wireless terminal. It is a structural example of the location information regarding a wireless terminal. It is a block diagram which shows the structure of the radio | wireless terminal concerning 1st Embodiment. It is a sequence diagram which shows operation | movement of the telephone control apparatus concerning 1st Embodiment, and a radio | wireless terminal. It is a sequence diagram which shows operation | movement of the telephone control apparatus and radio | wireless terminal concerning 2nd Embodiment. It is an example of a structure of the incoming call history recorded with a radio | wireless terminal. It is a sequence diagram which shows operation | movement of the telephone control apparatus and radio | wireless terminal concerning 3rd Embodiment. It is a sequence diagram which shows operation | movement of the telephone control apparatus and radio | wireless terminal concerning 4th Embodiment.

Next, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
First, a telephone control device 10 according to a first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a block diagram illustrating a configuration of the telephone control device according to the first embodiment.
The telephone control device 10 includes a telephone control device used as a main device or PBX in a telephone system 1 such as a business phone or a PBX system, and is connected to the telephone network NW1 via a line L1 and wirelessly via a line L2. It has a function of switching and connecting a plurality of extension terminals 20 connected to the communication network NW2 via the extension line 21 to the lines L1 and L2.

  The telephone network NW1 includes a general telephone network such as a PSTN (Public Switched Telephone Network), an ISDN (Integrated Services Digital Network), and an IP telephone network. The counterpart terminal 40 is a general terminal connected to the telephone network NW1.

  The wireless communication network NW2 includes a mobile communication network such as 3G (3rd Generation), a general wireless communication network such as Wi-Fi (Wireless Fidelity) using a wireless LAN, and WiMAX (Worldwide Interoperability for Microwave Access). The wireless terminal 30 is a general wireless wireless terminal such as a smartphone or a mobile phone connected to the wireless communication network NW2, and establishes a communication line with the telephone control device 10 via the wireless communication network NW2.

[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 is composed of a communication interface circuit, and has a function of exchanging various call control messages such as an incoming call notification with the telephone network NW1 via the line L1, and a line L1 and the telephone network NW1. A function for exchanging call voice with the counterpart terminal 40, a function for exchanging various call control messages such as a call request with the wireless communication network NW2 via the line L2, and a line L2 and the wireless communication network NW2. It has a function of performing data communication with the wireless terminal 30 and a function of exchanging call voice with the wireless terminal 30 via the line L2 and the wireless communication network NW2.

At this time, it is assumed that the line L1 includes one or more telephone lines, and these telephone lines may be analog telephone lines or digital lines such as IP lines or ISDN lines.
As for the line L2, when voice is exchanged by analog communication, the line L2 may be configured from an analog telephone line for voice communication and an IP line for data communication. When voice is exchanged by digital communication, it can be constituted by a single line L2 composed of a digital line such as an IP line or an ISDN line. Further, the network I / F unit 11 is provided with a wireless communication function, and the line L2 is configured by a wireless line directly connected to the wireless communication network NW2. Similarly to the wireless terminal 30, communication lines for data communication and voice communication are provided. It may be established through the line L2.

  The extension I / F unit 12 includes a dedicated communication circuit, and has a function of exchanging data such as a call control message such as an incoming call notification and a call voice with the extension terminal 20 via the extension line 21. Yes.

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 status data indicating various operation states, setting data indicating various setting contents, and the like for the lines L1 and L2, the extension terminal 20, and the wireless terminal 30.

FIG. 2 is a configuration example of status data indicating a line state of a telephone line. Here, for each line ID for identifying each call line accommodated in the telephone control device 10, various line states such as incoming call, outgoing call, call, hold, and empty are registered for the call line.
FIG. 3 is a configuration example of setting data regarding a wireless terminal. Here, for each terminal ID for identifying the wireless terminal 30, the wireless terminal telephone number and the IP address of the wireless terminal 30 are registered as a set.

  FIG. 4 is a configuration example of location information regarding a wireless terminal. Here, for each terminal ID for identifying the wireless terminal 30, whether or not the wireless terminal 30 is located in the wireless communication area of the wireless communication network NW2, that is, in-zone information indicating the area / out of area is registered. . The location information is updated by a location confirmation unit 14C described later.

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 in addition to the telephone control device 10, the extension terminal 20 and wireless It has a function of controlling the operation of the terminal 30.
As main processing units realized by the control unit 14, there are a radio terminal control unit 14A, a call control unit 14B, and a location check unit 14C.

  The wireless terminal control unit 14A communicates with the wireless terminal 30 such as the line state of the call line based on the line state of the call line registered in the call control data 13A of the storage unit 13 shown in FIG. It has a function of exchanging various data and various messages such as incoming inquiry described later.

  The call control unit 14B performs call control of various operations such as outgoing call, incoming call, hold, and transfer by the extension terminal 20 using a telephone line accommodated in the telephone control device 10, and the state of the telephone line by these call controls. 2 has the function of updating the line state of the telephone line registered in the call control data 13A of the storage unit 13 shown in FIG.

  Further, the call control unit 14B notifies the wireless terminal 30 of the incoming call as a function group for recording the incoming call history in the wireless terminal 30 when starting the calling of the wireless terminal 30 in response to the incoming call from the telephone network NW1. A function for transmitting a call message to be transmitted from the network I / F unit 11 to the wireless communication network NW2 using a communication line, and a call-in-progress message indicating that the call is being made at the wireless terminal 30 in response to the call message. If the incoming call cancellation is notified from the telephone network NW1 before being returned from the network NW2, a call for canceling the calling of the wireless terminal 30 is performed in response to the reception confirmation of the calling message thereafter. A function of transmitting a message to the wireless communication network NW2.

The located area confirmation unit 14C has a function of confirming whether or not the wireless terminal 30 is located within the wireless communication area of the wireless communication network NW2. As a method for confirming the location of the wireless terminal 30, a general known technique may be used.
For example, a calling message is transmitted from the location confirmation unit 14C to the wireless terminal 30 via the network I / F unit 11, and the calling message is returned after a certain waiting time elapses from the transmission of this calling message. Depending on whether or not, it may be determined whether the area is within or outside the area.

Further, when the telephone control device 10 is set and registered as a management server of the wireless terminal 30, since the location registration message is periodically notified from the wireless terminal 30, the location confirmation unit 14C receives the location registration message. What is necessary is just to determine in-range / out-of-range based on the situation.
Further, when the base station of the wireless communication network NW2 is set and registered as the management server of the wireless terminal 30, the located area confirming unit 14C may make an inquiry to the base station to confirm the in-range / out-of-range.

[Wireless terminal]
Next, with reference to FIG. 5, the radio | wireless terminal 30 concerning this Embodiment is demonstrated. FIG. 5 is a block diagram of the configuration of the wireless terminal according to the first embodiment.
The wireless terminal 30 is composed of a general wireless wireless terminal such as a smartphone or a mobile phone as a whole, and includes a wireless I / F unit 31, an audio processing unit 32, a storage unit 33, a control unit 34, an operation unit as main functional units. An input unit 35 and a screen display unit 36 are provided.

The wireless I / F unit 31 includes an interface circuit for wireless communication, and has a function of establishing a communication line with the telephone control device 10 via the wireless communication network NW2.
The audio processing unit 32 includes a speaker and a microphone. The audio processing unit 32 has a function of decoding audio data received from the communication line by the wireless I / F unit 31 into an audio signal and outputting the audio signal from the speaker, and an audio signal input from the microphone as audio data. And a function of outputting to the communication line from the wireless I / F unit 31.

The storage unit 33 includes a storage device such as a semiconductor memory, and has a function of storing processing data and a program 33P used for control processing in the control unit 34.
The program 33P is a program that implements various processing units by being read and executed by the CPU of the control unit 34.

  The main processing data stored in the storage unit 33 is call control data 33A. The call control data 33A includes status data indicating the operating states of the lines L1 and L2 and the extension terminal 20, setting data indicating setting contents, and the like. The status data includes data indicating the line status of each telephone line accommodated in the telephone control device 10 as shown in FIG. This data is notified from the telephone control device 10 using a communication line and stored in the storage unit 33.

The control unit 34 is composed of a computer having a CPU and its peripheral circuits, and has a function of controlling the operation of the wireless terminal 30 by realizing various processing units by reading and executing the program 33P of the storage unit 33. ing.
As main processing units realized by the control unit 34, there are a line control unit 34A and a call control unit 34B. Among these, the call control unit 34B is a basic function that is standardly provided as a call application in the general wireless terminal 30, but the line control unit 34A is not a basic function. For this reason, the line control unit 34A may be realized by an additional application added to the wireless terminal 30, and the program may be provided to the user.

The line control unit 34A has a function of exchanging various data such as a line state of a telephone line and various messages such as an incoming inquiry described later with the telephone control apparatus 10 using a communication line.
The call control unit 34B establishes a call path with the telephone control device 10 via a communication line, and implements a voice call between the partner terminal 40 and the extension terminal 20 that are relay-connected by the telephone control device 10. The screen display unit 36 has a function of displaying the incoming call history and the call history recorded in the storage unit 33 in response to a user operation.

The operation input unit 35 includes an operation input device such as a touch panel provided on the display screen of the screen display unit 36 and various operation switches, and has a function of detecting a user operation and outputting it to the control unit 34. doing.
The screen display unit 36 has a function of displaying a line status screen output from the control unit 34 and various screens such as an incoming call history and a call history.

[Operation of First Embodiment]
Next, operations of the telephone control device 10 and the wireless terminal 30 according to the present embodiment will be described with reference to FIG. FIG. 6 is a sequence diagram illustrating operations of the telephone control device and the wireless terminal according to the first embodiment.

  Here, in the situation in which the incoming call cancellation is notified from the telephone network NW1 while the call of the wireless terminal 30 corresponding to the incoming call from the telephone network NW1 is delayed due to congestion in the wireless communication network NW2, the incoming call history is notified. An incoming call history recording operation for recording the message in the wireless terminal 30 will be described. In the present invention, a case where the call control message exchanged between the telephone control device 10 and the radio terminal 30 via the radio communication network NW2 is exchanged based on SIP (Session Initiation Protocol) will be described as an example.

  In response to an incoming call from the telephone network NW1 detected by the network I / F unit 11 (Step 100), the call control unit 14B of the telephone control device 10 calls the wireless terminal 30 from the network I / F unit 11 to the communication line. Then, a call message (INVITE) for notifying the wireless terminal 30 of the incoming call is transmitted to the wireless communication network NW2 (step 101). This call message includes caller information notified by an incoming call from the telephone network NW1.

Here, it is assumed that congestion occurs in the wireless communication network NW2 (step 102), and the transmission of the incoming message (INVITE) notified from the wireless communication network NW2 to the wireless terminal 30 in response to this call message is delayed. .
Due to this delay, in response to the calling message transmitted to the wireless terminal 30, a disconnect message indicating cancellation of the incoming call is notified from the telephone network NW1 before the ringing message (180Ringing) is returned from the wireless terminal 30. In the case (step 103), the call control unit 14B waits to receive the ringing message (180 Ringing) returned from the wireless terminal 30 (step 104).

Thereafter, when an incoming message (INVITE) is notified from the wireless communication network NW2 to the wireless terminal 30 via the communication line in response to the call message transmitted from the telephone control device 10 (step 110), the call of the wireless terminal 30 The control unit 34B returns a ringing message (180 Ringing) indicating that the wireless terminal 30 is in a calling state to the wireless communication network NW2 via the communication line (step 111).
In addition, the call control unit 34B performs an incoming call display using the caller information included in the incoming message on the screen display unit 36 in response to the incoming message from the wireless communication network NW2 (step 112). The incoming call history including the information is recorded in the storage unit 33 (step 113).

When the network I / F unit 11 confirms the reception of the ringing message from the wireless communication network NW2, the call control unit 14B of the telephone control device 10 receives the wireless communication network from the network I / F unit 11 via the communication line. A disconnect message (Cancel) corresponding to cancellation of incoming call from the telephone network NW1 is transmitted to the NW2 (step 114).
The call control unit 34B of the wireless terminal 30 ends the incoming call display in response to this disconnection message, and thus the series of incoming call history recording operations ends.

[Effect of the first embodiment]
As described above, according to the present embodiment, the call control unit 14B transmits a call message for notifying the wireless terminal 30 of the incoming call to the wireless communication network NW2 using the communication line in response to the incoming call from the telephone network NW1. Then, in response to the call message, the call network NW1 notifies that the incoming call is canceled before the call message indicating that the call is being made at the wireless terminal 30 is returned from the wireless communication network NW2. Is configured to transmit a disconnection message for canceling the calling of the wireless terminal 30 to the wireless communication network NW2 in response to the reception confirmation of the message being called.

As a result, the disconnect message is not immediately transmitted to the radio terminal 30 in response to the cancellation of the incoming call from the telephone network NW1, but is disconnected in response to the reception confirmation of the in-call message indicating the in-call state at the radio terminal 30. A message is transmitted to notify the wireless terminal 30 of the cancellation of the incoming call.
Therefore, the wireless terminal 30 returns a ringing message and records an incoming call history in response to an incoming message from the wireless communication network NW2, and then receives a disconnect message from the wireless communication network NW2. For this reason, even when the call of the wireless terminal 30 is canceled in response to the cancellation of the incoming call from the telephone network NW1, the wireless terminal 30 can reliably record the incoming call history.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 7 is a sequence diagram illustrating operations of the telephone control device and the wireless terminal according to the second embodiment.

  In the first embodiment, a case has been described in which a call message is transmitted from the telephone network NW1 to the wireless terminal 30 in response to an incoming call, and then an incoming call cancellation is notified from the telephone network NW1. In the present embodiment, when the incoming call from the telephone network NW1 is received and the incoming call cancellation is notified from the telephone network NW1 in a state where the wireless terminal 30 is located outside the range of the wireless communication network NW2 and the calling message cannot be transmitted. explain.

  In the present embodiment, the call control unit 14B is notified of the termination of the incoming call from the telephone network NW1 when the wireless terminal 30 is located outside the service area when the incoming call is received from the telephone network NW1 and the transmission of the call message is stopped. After that, when a communication line is established with the wireless terminal 30 by the network I / F unit 11, a function for transmitting a call message to the wireless communication network NW2 and a reception confirmation of the in-call message corresponding thereto And a function of transmitting a disconnect message in response to.

  In addition, the call control unit 14B sends a call message to the wireless terminal 30 after receiving an incoming call date and time, a function for measuring an incoming time from the incoming call notification to the incoming call cancellation, and an incoming call cancellation notice from the telephone network NW1. When transmitting to the wireless terminal 30, it has a function of notifying the wireless terminal 30 of the incoming date and time and the incoming time by the call message. It should be noted that the functions related to the incoming date and time and the incoming time can be similarly applied to the embodiment in which the call message is transmitted to the wireless terminal 30 after the notification of the cancellation of the incoming call, that is, the third and fourth embodiments described later. .

  As shown in FIG. 7, the call control unit 14B of the telephone control device 10 calls the wireless terminal 30 in response to an incoming call from the telephone network NW1 detected by the network I / F unit 11 (step 200). Before transmitting the call message to the terminal 30, the presence confirmation unit 14C confirms the presence / absence of the wireless terminal 30 (step 201).

  If it is confirmed that the wireless communication network NW2 is located outside the service area, the call control unit 14B stops transmission of the call message and executes call error processing for the incoming call (step 202). As general call error processing, in addition to processing for returning a busy message, out-of-service notification processing for sending out-of-service notification voice guidance to the partner terminal 40 and message recording processing for recording the partner message are executed.

  Subsequently, when a disconnect message indicating cancellation of the incoming call is notified from the telephone network NW1 (step 203), the call control unit 14B confirms that the wireless terminal 30 is located within the service area by the area check unit 14C. (Step 204).

Thereafter, when the presence confirmation unit 14C confirms that the wireless terminal 30 is located within the area (step 210), the call control unit 14B calls a call message (notifying the wireless terminal 30 of the previous incoming call) ( INVITE) is transmitted from the network I / F unit 11 to the wireless communication network NW2 via the communication line (step 211).
At this time, the call control unit 14B measures the incoming date and time when the incoming call is notified from the telephone network NW1, and the incoming time from the notification of the incoming call to the cancellation of the incoming call, and includes the incoming date and time and the incoming time in the call message. To the wireless terminal 30.

  When the call control unit 34B of the wireless terminal 30 is notified of the incoming message (INVITE) from the wireless communication network NW2 to the wireless terminal 30 via the communication line in response to the call message transmitted from the telephone control device 10 (step S40). 212), a ringing message (180 Ringing) is returned to the wireless communication network NW2 via the communication line (step 213).

In addition, the call control unit 34B performs an incoming call display using the caller information included in the incoming message on the screen display unit 36 in response to the incoming message from the wireless communication network NW2 (step 214), and the caller The incoming call history including the information is recorded in the storage unit 33 (step 215).
FIG. 8 is a configuration example of the incoming call history recorded in the wireless terminal. Here, for each incoming call, the incoming date and time, the incoming time, the caller telephone number, and the caller name are recorded as a set.

When the network I / F unit 11 confirms the reception of the ringing message from the wireless communication network NW2, the call control unit 14B of the telephone control device 10 receives the wireless communication network from the network I / F unit 11 via the communication line. A disconnect message (Cancel) corresponding to cancellation of the incoming call from the telephone network NW1 is transmitted to the NW2 (step 216).
The call control unit 34B of the wireless terminal 30 ends the incoming call display in response to this disconnection message, and thus the series of incoming call history recording operations ends.

[Effect of the second embodiment]
As described above, according to the present embodiment, when the call control unit 14B stops the transmission of the call message when the wireless terminal 30 is located outside the service area when the call is received from the telephone network NW1, the call stop is notified. After that, when the communication line is established with the wireless terminal 30 by the network I / F unit 11, the call message is transmitted to the wireless communication network NW2, and the reception of the in-call message corresponding to this is confirmed. A disconnect message is transmitted.

As a result, when the wireless terminal 30 is located outside the service area and the incoming call cancellation is notified from the telephone network NW1, a call message is transmitted when the wireless terminal 30 returns to the service area. After confirming receipt of the ringing message, a disconnect message is sent.
Therefore, the wireless terminal 30 returns a ringing message and records an incoming call history in response to an incoming message from the wireless communication network NW2, and then receives a disconnect message from the wireless communication network NW2. For this reason, even when the call of the wireless terminal 30 is canceled in response to the cancellation of the incoming call from the telephone network NW1, the wireless terminal 30 can reliably record the incoming call history.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 9 is a sequence diagram illustrating operations of the telephone control device and the wireless terminal according to the third embodiment.

  In the first embodiment, the case has been described in which the call cancellation is notified from the telephone network NW1 after the call message is transmitted to the wireless terminal 30. In the present embodiment, a case will be described in which incoming call cancellation is notified from the telephone network NW1 in a state in which the wireless terminal 30 is busy and transmission of a call message is stopped.

  In the present embodiment, the call control unit 14B receives a call from the telephone network NW1 when the wireless terminal 30 is in a call via the telephone control device 10 and stops sending a call message when an incoming call is received from the telephone network NW1. A function for transmitting a call message to the wireless terminal 30 at the time when the call of the wireless terminal 30 is terminated after the cancellation of the incoming call is notified, and a disconnect message is transmitted in response to the reception confirmation of the in-call message corresponding to this It has the function to do.

  As shown in FIG. 9, the call control unit 14B of the telephone control device 10 calls the wireless terminal 30 in response to an incoming call from the telephone network NW1 detected by the network I / F unit 11 (step 300). Before transmitting a call message to the terminal 30, the call state of the wireless terminal 30 is confirmed with reference to the call control data 33A in the storage unit 33 (step 301).

  Here, when the wireless terminal 30 is in a call via the telephone control device 10, the call control unit 14B stops the transmission of the call message and executes a call error process for the incoming call (step 302). As a general call error process, in addition to a process of returning a busy message, a busy notification process of sending a busy notification voice guidance to the partner terminal 40 and a message recording process of recording the partner message are executed.

  Subsequently, when a disconnect message indicating cancellation of the incoming call is notified from the telephone network NW1 (step 303), the call control unit 14B waits until the end of the call of the wireless terminal 30 is confirmed (step 304). ).

  Thereafter, when it is confirmed that the call of the wireless terminal 30 is completed (step 310), the call control unit 14B sends a call message (INVITE) for notifying the wireless terminal 30 of the previous incoming call to the network I. The data is transmitted from the / F unit 11 to the wireless communication network NW2 via the communication line (step 311).

  When the call control unit 34B of the wireless terminal 30 is notified of the incoming message (INVITE) from the wireless communication network NW2 to the wireless terminal 30 via the communication line in response to the call message transmitted from the telephone control device 10 (step S40). 312), a ringing message (180 Ringing) is returned to the wireless communication network NW2 via the communication line (step 313).

  Further, the call control unit 34B performs an incoming call display using the caller information included in the incoming message on the screen display unit 36 in response to the incoming message from the wireless communication network NW2 (step 314), and the caller The incoming call history including the information is recorded in the storage unit 33 (step 315).

When the network I / F unit 11 confirms the reception of the ringing message from the wireless communication network NW2, the call control unit 14B of the telephone control device 10 receives the wireless communication network from the network I / F unit 11 via the communication line. A disconnect message (Cancel) corresponding to cancellation of the incoming call from the telephone network NW1 is transmitted to the NW2 (step 316).
The call control unit 34B of the wireless terminal 30 ends the incoming call display in response to this disconnection message, and thus the series of incoming call history recording operations ends.

[Effect of the third embodiment]
As described above, in the present embodiment, when the call control unit 14B receives a call from the telephone network NW1, the wireless terminal 30 is in a call via the telephone control device 10 and stops transmitting the call message. After the call cancellation is notified, when the call of the wireless terminal 30 is terminated, a call message is transmitted to the wireless terminal 30 and a disconnect message is transmitted in response to the reception confirmation of the in-call message corresponding thereto. It is a thing.

Thus, when the wireless terminal 30 is making a call via the telephone control device 10 and a call cancellation is notified from the telephone network NW1, a call message is transmitted when the call of the wireless terminal 30 ends. After confirming the reception of the in-call message in response to this, the disconnect message is transmitted.
Therefore, the wireless terminal 30 returns a ringing message and records an incoming call history in response to an incoming message from the wireless communication network NW2, and then receives a disconnect message from the wireless communication network NW2. For this reason, even when the call of the wireless terminal 30 is canceled in response to the cancellation of the incoming call from the telephone network NW1, the wireless terminal 30 can reliably record the incoming call history.

[Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 10 is a sequence diagram illustrating operations of the telephone control device and the wireless terminal according to the fourth embodiment.

  In the first embodiment, the case has been described in which the call cancellation is notified from the telephone network NW1 after the call message is transmitted to the wireless terminal 30. In the present embodiment, a case will be described in which incoming call cancellation is notified from the telephone network NW1 in a state where busy is notified from the wireless terminal 30.

  In the present embodiment, the call control unit 14B indicates that the wireless terminal 30 is in a call from the wireless communication network NW2 in response to a call message transmitted to the wireless terminal 30 in response to an incoming call from the telephone network NW1. When a busy message is received, the incoming call cancellation message is notified from the telephone network NW1, and then the incoming call inquiry message is notified from the wireless terminal 30 via the communication line. A function for transmitting a new paging message to the wireless communication network NW, and a function for transmitting a disconnect message in response to the reception confirmation of the mid-calling message.

As shown in FIG. 10, the call control unit 14B of the telephone control apparatus 10 calls the wireless terminal 30 in response to an incoming call from the telephone network NW1 detected by the network I / F unit 11 (step 400). The / F unit 11 transmits a call message (INVITE) to the wireless communication network NW2 via the communication line (step 401).
Here, when the wireless terminal 30 is talking to another terminal via the wireless communication network NW2 without going through the telephone control device 10 (step 402), a busy message is returned from the wireless communication network NW2. (Step 403).

  In response to the busy message, the call control unit 14B executes a call error process for the incoming call (step 404). As a general call error process, in addition to a process of returning a busy message, a busy notification process of sending a busy notification voice guidance to the partner terminal 40 and a message recording process of recording the partner message are executed.

  Subsequently, when a disconnect message indicating cancellation of the incoming call is notified from the telephone network NW1 (step 405), the call control unit 14B terminates the call of the wireless terminal 30 and notifies the incoming call inquiry from the wireless terminal 30. (Step 406).

  Thereafter, when the call of the wireless terminal 30 is ended (step 410), the incoming call inquiry message transmitted via the communication line is confirmed by the wireless terminal control unit 14A by the line control unit 34A of the wireless terminal 30. (Step 411), the call control unit 14B transmits a call message (INVITE) for notifying the wireless terminal 30 of the previous incoming call from the network I / F unit 11 to the wireless communication network NW2 via the communication line ( Step 412).

  When the call control unit 34B of the wireless terminal 30 is notified of the incoming message (INVITE) from the wireless communication network NW2 to the wireless terminal 30 via the communication line in response to the call message transmitted from the telephone control device 10 (step S40). 413), a ringing message (180 Ringing) is returned to the wireless communication network NW2 via the communication line (step 414).

  In addition, the call control unit 34B performs an incoming call display using the caller information included in the incoming message on the screen display unit 36 in response to the incoming message from the wireless communication network NW2 (step 415), and the caller The incoming call history including the information is recorded in the storage unit 33 (step 416).

When the network I / F unit 11 confirms the reception of the ringing message from the wireless communication network NW2, the call control unit 14B of the telephone control device 10 receives the wireless communication network from the network I / F unit 11 via the communication line. A disconnect message (Cancel) corresponding to cancellation of the incoming call from the telephone network NW1 is transmitted to the NW2 (step 417).
The call control unit 34B of the wireless terminal 30 ends the incoming call display in response to this disconnection message, and thus the series of incoming call history recording operations ends.

[Effect of the fourth embodiment]
As described above, according to the present embodiment, the call control unit 14B is busy on a call from the radio communication network NW2 in response to a call message transmitted to the radio terminal 30 in response to an incoming call from the telephone network NW1. When a busy message indicating that there is a message is received, the incoming call is notified to the wireless terminal 30 when the incoming call inquiry message is notified from the wireless terminal 30 via the communication line after the cancellation of the incoming call is notified. A new paging message is transmitted to the wireless communication network NW2, and a disconnect message is transmitted in response to the reception confirmation of the in-calling message.

As a result, when the wireless terminal 30 is making a call without going through the telephone control device 10, and a call cancellation is notified from the telephone network NW 1, a new call is made in response to the incoming inquiry message from the wireless terminal 30. After the message is transmitted and the reception of the in-call message corresponding to the message is confirmed, the disconnect message is transmitted.
Therefore, the wireless terminal 30 returns a ringing message and records an incoming call history in response to an incoming message from the wireless communication network NW2, and then receives a disconnect message from the wireless communication network NW2. For this reason, even when the call of the wireless terminal 30 is canceled in response to the cancellation of the incoming call from the telephone network NW1, the wireless terminal 30 can reliably record the incoming call history.

[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.

  DESCRIPTION OF SYMBOLS 1 ... Telephone system, 10 ... Telephone control apparatus, 11 ... Network I / F part 11, 12 ... Extension I / F part, 13 ... Memory | storage part, 13A ... Call control data, 13P ... Program, 14 ... Control part, 14A ... Wireless terminal control unit, 14B ... call control unit, 14C ... location check unit, 20 ... extension terminal, 21 ... extension line, 30 ... wireless terminal, 31 ... wireless I / F unit, 32 ... voice processing unit, 33 ... storage 33A ... call control data, 33P ... program, 34 ... control unit, 34A ... line control unit, 34B ... call control unit, 35 ... operation input unit, 36 ... screen display unit, 40 ... party terminal, NW1 ... phone network , NW2 ... wireless communication network, L1, L2 ... lines.

Claims (6)

A telephone control device for switching and connecting a wireless terminal connected via a wireless communication network to a plurality of telephone lines connected to a telephone network,
A network I / F unit that establishes a communication line with the wireless terminal via the wireless communication network;
In response to an incoming call from the telephone network, a call message for notifying the wireless terminal of the incoming call is transmitted to the wireless communication network using the communication line, and then a call is made at the wireless terminal according to the call message. If the incoming call cancellation is notified from the telephone network before the in-call message indicating the inside is returned from the wireless communication network, A telephone control device comprising: a call control unit that transmits a disconnect message for canceling a call of a wireless terminal to the wireless communication network. The telephone control device according to claim 1, wherein
If the wireless terminal is out of service area and stops transmitting the call message when the incoming call is received, the call control unit is notified by the network I / F unit and then the wireless terminal The call message is transmitted to the wireless communication network when the communication line is established with the communication line, and the disconnect message is transmitted in response to the reception confirmation of the in-call message in response thereto. Phone control device to do. The telephone control device according to claim 1 or 2,
If the wireless terminal is in a call via the telephone control device at the time of the incoming call and stops transmitting the call message, the call control unit is notified of the cancellation of the incoming call, and then The telephone control device, wherein when the call is finished, the call message is transmitted to the wireless terminal, and the disconnect message is transmitted in response to the reception confirmation of the message being called. The telephone control device according to any one of claims 1 to 3,
In response to the call message transmitted to the wireless terminal in response to the incoming call, the call control unit receives a busy message indicating that the wireless terminal is busy from the wireless communication network. When the incoming call inquiry message is notified from the wireless terminal via the communication line after the incoming call cancellation is notified, a new call message for notifying the wireless terminal of the incoming call is transmitted to the wireless communication network. The telephone control device transmits the disconnection message in response to the reception confirmation of the in-call message in response thereto. The telephone control device according to any one of claims 2 to 4,
The call control unit measures an incoming date and time when the incoming call is notified and an incoming time from the incoming call notification to the incoming call cancellation, and sends the call message to the wireless communication after the incoming call cancellation notification from the telephone network. When transmitting to a terminal, the telephone control apparatus characterized by notifying the wireless terminal of the incoming date and time and the incoming time by the call message.   The program for functioning a computer as each part which comprises the telephone control apparatus as described in any one of Claims 1-5.

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