WO2011093344A1

WO2011093344A1 - Line switching device and interphone system provided with same

Info

Publication number: WO2011093344A1
Application number: PCT/JP2011/051506
Authority: WO
Inventors: 博文中島
Original assignee: パナソニック電工株式会社
Priority date: 2010-01-26
Filing date: 2011-01-26
Publication date: 2011-08-04
Also published as: JP5942239B2; JP2011155337A

Abstract

A line switching device is configured in such a manner as to establish the call between an interphone device for obtaining visitor's information and a call device by being connected to the interphone device via an IP network, and connected to the call device via a telecommunication network. The line switching device is provided with a first communication unit, a second communication unit, and a line unit for controlling the first communication unit and the second communication unit. The line unit is provided with a calling section and a control section. The calling section is configured in such a manner as to create a call-back message for requesting the call device to make the call back to the interphone device using the visitor's information, and control the second communication unit to transmit the created call-back message to the call device. The control section is configured in such a manner as to establish the call between the interphone device and the call device by controlling the first communication unit and the second communication unit.

Description

Circuit switching apparatus and intercom system including the same

The present invention relates to a circuit switching apparatus that controls connection of a plurality of lines and an interphone system including the circuit switching apparatus, and more particularly to a circuit switching apparatus that uses a callback as a calling method and an interphone system including the circuit switching apparatus.

Conventionally, when requesting a callback, it is common to place a call for a callback request to the other party, hang up, and wait for a call back from the other party. If set in advance, a series of callback procedures can be automatically performed. Advantages of performing the callback include that it is possible to avoid an excessive burden on the terminal side, and that it is possible to authenticate the user by the telephone number that requested the return contact.

By the way, a technique for making a call to a mobile phone of a user who is going out from an interphone device installed at a front door or the like in order to have a conversation with a visitor who is away is known (Reference 1 (Japanese Published Patent Publication). 2003-333198), Document 2 (Japan Published Patent Publication 2004-207798), Document 3 (Japan Published Patent Publication 2004-304535)). For example, Document 1 describes that an image of a visitor is captured by an interphone device, and when the captured image matches a pre-registered image, the image is transmitted to a mobile phone.

However, according to the prior art, there is a problem that a circuit switching device cannot be easily introduced for the following reasons. In other words, according to the conventional callback, it is unknown how long it takes to hang up the phone and receive a return call from the other party, and it is not known whether the call is actually returned. In addition, when the other party's mobile phone is out of service area or the like, it is expected that the other party does not operate normally when the other party is absent. Further, since it is necessary to connect a line to the other party and call the other party, the service provider (circuit switching operator) must bear the call fee.

Here, when the conventional callback is applied to the techniques disclosed in the above documents 1-3, the interphone device calls the mobile phone of the user who is out, so the system side (service provider) Must bear the call charges. Also, because of the incoming voice call, the mobile phone user cannot know who the visitor is. The user has to answer the call to know who the visitor is, and cannot choose whether to respond by the visitor. It is also conceivable that the service provider charges the user for a call charge. In this case, all call charges are borne by the user. Therefore, the user must bear the call charge even when the visitor is pushing. Furthermore, according to the conventional method of collating an image captured by an intercom device with a pre-registered image, it is appropriate for a visitor who needs a response even if a different person is required each time, such as a courier company. There is also a problem that it cannot be handled. Furthermore, a visitor becomes a callback requester, but there is also a request that the visitor wants to respond as if he / she is responding from the intercom device in the house without knowing the mobile phone number of the callback side. is there.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a circuit switching apparatus capable of reducing the cost required for providing a circuit switching service and an interphone system including the circuit switching apparatus.

A first form of the circuit switching device of the present invention is connected to an intercom device that acquires visitor information through an IP network and is connected to a communication device through a telecommunication network, and the interphone device and the communication device are connected to each other. A circuit switching device for establishing a communication between the first communication unit, the first communication unit for communicating with the intercom device through the IP network, the second communication unit for communicating with the communication device through the telecommunication network, and the first communication. A line connection unit that controls the unit and the second communication unit. The line connection unit includes a calling unit and a control unit, and the calling unit receives a first call request from the interphone device. And when the first communication unit receives the visitor information, the call device is connected to the interphone device. The control unit is configured to generate a callback message for requesting back using the visitor information, control the second communication unit, and transmit the created callback message to the call device. Determines whether the second communication unit has received a second call request from the call device while the communication state between the interphone device and the first communication unit is maintained, and the interphone device And when the second communication unit receives the second call request from the call device while the communication state between the first communication unit and the first communication unit is maintained, the first communication unit and the second communication unit To establish a call between the intercom device and the call device.

In a second form of the circuit switching apparatus of the present invention, in the first form, the visitor information is an image of the visitor.

In a third aspect of the circuit switching device of the present invention, in the first or second aspect, the IP network is an extension telephone network.

According to a fourth aspect of the circuit switching apparatus of the present invention, in the first to third aspects, the line connection unit receives the first call request from the interphone device when the first communication unit receives the first call request. A holding unit that controls the first communication unit to maintain the communication state between the intercom device and the first communication unit for a predetermined period is provided.

A fifth form of the circuit switching device of the present invention is connected to an intercom device that acquires visitor information through an IP network and is connected to a communication device through an electric communication network, and the interphone device and the communication device are connected to each other. A circuit switching device for establishing a communication between the first communication unit, the first communication unit for communicating with the intercom device through the IP network, the second communication unit for communicating with the communication device through the telecommunication network, and the first communication. A line connection unit that controls the unit and the second communication unit. The line connection unit includes a calling unit, a holding unit, and a control unit, and the calling unit is called from the interphone device. When the first communication unit receives the call signal and the visitor information notifying that the call has been made, A callback message for requesting a callback to the intercom device is created using the visitor information and the second communication unit is controlled to transmit the created callback message to the calling device. The holding unit receives the call request from the call device after transmitting the callback message from the call unit, and controls the second communication unit to control the call device and the second communication unit. When the call unit receives the call request from the call device after transmitting the callback message, the calling unit controls the first communication unit and the interphone device. The communication unit is configured to start communication with the first communication unit, and the control unit includes the interphone device and the first communication unit. When communication with the communication unit is started, configured to establish a call between said first and controls the communication unit and the second communication unit the intercom device and the communication device.

A first form of an intercom system according to the present invention is a circuit switching device that establishes a call between an interphone device and the interphone device that is connected to the interphone device through an IP network and that is connected to the intercom device and a telecommunications network. And the intercom device includes a device communication unit that communicates with the circuit switching device and the extension telephone network, a call button, a control unit, and an information acquisition unit that acquires visitor information. When the call button is operated, the control unit controls the device communication unit to exchange the first call request together with the visitor information acquired by the information acquisition unit through the IP network. Configured to transmit to the device, the circuit switching device and the interphone device A first communication unit that communicates through an IP network; a second communication unit that communicates with the telephone device through the telecommunication network; and a line connection unit that controls the first communication unit and the second communication unit. The line connection unit includes a calling unit and a control unit. When the first communication unit receives the first call request and the visitor information from the interphone device, the calling unit receives the first communication request. Create a callback message requesting the call device to call back to the intercom device using the visitor information, and control the second communication unit to send the created callback message to the call device The controller is configured to maintain a communication state between the intercom device and the first communication unit. When the second call request is received from the call device during the period, the first communication unit and the second communication unit are controlled to establish a call between the intercom device and the call device. The

In a second form of the intercom system of the present invention, the visitor information is an image of the visitor in the first form.

1 is a configuration diagram of a circuit switching apparatus according to a first embodiment of the present invention. It is a block diagram which paid its attention to a part of circuit switching apparatus in the said 1st Embodiment. It is a flowchart which shows operation | movement of the circuit switching apparatus in the said 1st Embodiment. It is a block diagram which paid its attention to a part of circuit switching apparatus in the said 1st Embodiment. It is a flowchart which shows operation | movement of the circuit switching apparatus in the said 1st Embodiment. It is a block diagram which paid its attention to a part of circuit switching apparatus in the said 1st Embodiment. It is a flowchart which shows operation | movement of the circuit switching apparatus in the said 1st Embodiment. It is a block diagram which paid its attention to a part of circuit switching apparatus in the said 1st Embodiment. It is a flowchart which shows operation | movement of the circuit switching apparatus in the said 1st Embodiment. It is a block diagram of the circuit exchange apparatus in the said 1st Embodiment. It is a figure for demonstrating the circuit switching apparatus in the 2nd Embodiment of this invention. It is a block diagram of the circuit switching apparatus in the said 2nd Embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a configuration diagram of a circuit switching device 20 according to the first embodiment of the present invention. Here, the direction of the call is indicated by an arrow. As shown in this figure, the circuit switching device 20 is a PBX (private branch exchange) that controls the connection of two types of lines on the extension side using an intercom device or the like as a calling device and on the outside line using a mobile phone or the like as a receiving device. Functionally, the server is a line holding unit 4, a line control unit 5, a device management unit 6, an exclusive control unit 7, a line call invitation unit 8, a data management unit 9, and data processing. Unit 10, session management unit 11, and IP distribution unit 12.

When the call is received from the extension, the line holding unit 4 holds (holds) the extension connection in a standby state for a certain period of time. Also, when a call is received from an extension, the line holding unit 4 sends a call command to the line call invitation unit 8 in cooperation with other functions. The line control unit 5 connects the extension line to the outside line when a callback is made from the outside line while the connection of the extension line is held by the line holding unit 4. The line control unit 5 includes a function for maintaining and managing a call by connecting an internal line and an external line, a database device for recording data, and the like. The device management unit 6 manages user telephone numbers and the like. The device management unit 6 operates in cooperation with the data management unit 9, the data processing unit 10, and the like. The exclusive control unit 7 realizes a function of not accepting a call to an extension side device other than a user-registered mobile phone registered in advance. The exclusive control unit 7 operates in cooperation with the line call invitation unit 8, the data management unit 9, and the like. When there is a call from an extension, the line call invitation unit 8 transmits a message to call back the extension to the external line associated with the extension. Specifically, the user of the mobile phone is prompted to call back to the visitor by e-mail distribution or the like. The line call invitation unit 8 operates in cooperation with the data management unit 9, the data processing unit 10, the IP distribution unit 12, and the like. The data management unit 9 is a database device that can read / write, store, and delete data. The data processing unit 10 operates data in the database device. The session management unit 11 manages line holding and connection, and operates in cooperation with other functions. The IP distribution unit 12 makes a callback request. Specifically, when the call is an e-mail, an e-mail delivery function is realized, and when the call is a mobile application, various operations are performed on the mobile carrier server.

The terminal device (interphone device, mobile phone, etc.) is connected to the circuit switching device 20 via a plurality of lines. Here, three lines 1-3 will be described as an example.

Line 1 is an example of a first line according to the present invention. That is, the line 1 is an extension line and is a line on which IP communication is performed. An intercom device is connected to the line 1. This intercom device is connected to the Internet, and implements a voice call using the IP protocol or the like using an extension function. When a visitor such as a home delivery company presses a call button on the interphone device, the IP phone calls and issues a callback request. The line 2 is an example of a second line according to the present invention. The line 2 is connected to a user's own mobile phone (resident of the intercom equipment installation dweller). By using this mobile phone, the user can receive e-mail and the like on the go through the carrier network, and can make a call as a voice call. The line 3 is connected to a mobile phone owned by a person other than the user (resident of the intercom device installation dweller). The function of the line 3 is the same as that of the line 2. In the following, the circuit switching device 20 and the terminal device (interphone device, mobile phone, etc.) may be collectively referred to as an “interphone system”.

Hereinafter, the configuration of the circuit switching apparatus 20 according to the first embodiment of the present invention will be described along with its operation.

First, the operation from when the call button of the intercom device is pressed until callee information is acquired will be described with reference to FIGS. That is, when a visitor presses the call button of the intercom device (FIG. 3, S20), the intercom device transmits an extension telephone (line 1), and visitor information such as a visitor's photograph or video is sent to the circuit switching device 20. Transmit (S21 in FIG. 3). As a result, the line holding unit 4 that has received the call holds (holds) the line 1 without disconnecting it, and activates the line call invitation unit 8 during that time (FIG. 3, S22 → S23 → S24). At this time, using the extension number of the line 1 that has been reached as an extension, call destination information (calling destination mobile phone number, mail address, messenger ID, mobile application, etc.) registered in advance in association with the extension number ) Is acquired from the data processing unit 10 (FIG. 3, S25 → S26). Here, while the line 1 is held, it is possible to repeatedly send a guidance to that effect by voice. It is also possible to acquire visitor information and store it in the circuit switching device 20 when the line 1 arrives (FIG. 3, S24).

Next, using FIG. 4 and FIG. 5, the operation from obtaining the callee information until receiving the callback will be described. That is, when the line call invitation unit 8 acquires the call destination information, the line call invitation unit 8 performs IP communication for the mobile phone number indicated by the call destination information. When the call destination information is a mail address, a mail indicating that there is a visitor is transmitted (FIG. 5, S30 → S31). At this time, it is also possible to add visitor information to the mail. When the user receives this e-mail at a place where he / she goes out, the user confirms the event of the visit based on the text of the e-mail and visitor information, and determines whether to respond to the call (FIG. 5, S32 → S33). When responding to the call, a voice call (callback) is made from the mobile phone to the telephone number designated by e-mail or the like. As a result, the line 2 makes a call and the line control unit 5 receives the callback (FIG. 5, S34 → S35). On the other hand, if the call is not answered, if the telephone is not called, the holding of the line 1 is released after a predetermined time, and the visitor correspondence is ended (S36 in FIG. 5). In this way, if the callback guidance is an invitation system by mail delivery or the like, the service provider does not have to bear the outgoing call charges. Contrary to the case of immediate connection, it is possible to determine whether or not the other party (service user) calls back.

Next, using FIG. 6 and FIG. 7, the operation from the reception of the callback to the end of the visitor correspondence will be described. That is, when the user calls back from the mobile phone, the line control unit 5 that receives the incoming call acquires the caller's phone number and determines whether the acquired phone number is a pre-registered phone number ( FIG. 7, S40). Here, since the incoming call is from a telephone number registered in advance, the callback line (line 2) is held and connected to the line holding unit 4 (FIG. 7, S41 → S42). The line holding unit 4 confirms the state of the line 1 and connects the line 2 and the line 1 when the line 1 is held (held) (FIG. 7, S43 → S44). As a result, a voice conversation is established between the visitor and the user on the go (S45 in FIG. 7). The visitor merely pushes the intercom device, and it is the same as when talking with a user at home. The visitor has a conversation in which the user's mobile phone number is kept secret. If a certain period of time has passed since

lines

1 and 2 were connected, or if

lines

1 or 2 were explicitly disconnected, the line holding was canceled and the remaining

lines

1 or 2 were also disconnected to handle visitors The process ends (FIG. 7, S46). Here, the cost related to the outgoing call is a telephone charge while the user is making a call to the circuit switching device 20 using the mobile phone. This telephone fee is the user's own mobile phone fee, and there is no outgoing / incoming cost on the system side. That is, it is possible to realize a system that suppresses the communication charge burden on the service provider.

Next, the exclusive control function of the circuit switching device 20 will be described with reference to FIGS. It is also assumed that the system side receives an incoming call from a telephone number other than that registered in advance. Therefore, by authenticating using pre-registered data, incoming calls other than users of the line 2 are not connected to the line 1. That is, when there is an incoming call from the line 3, the exclusive control unit 7 determines that the incoming telephone number is other than the registered number, and does not connect the line 3 to the line 1 (FIG. 9A, S50 → S51 → S52). In addition, it also has a function of disconnecting the line 1 when a predetermined time elapses while the line 1 is held (held) (FIG. 9B, S22 → S53).

The circuit switching device 20 of the first embodiment described above is connected to the first call device 30 connected to the first telecommunication network 60 and the second telecommunication network 70 as shown in FIG. It is configured to establish a call with the second call device 40. Here, the first telecommunication network 60 is an IP network and is used as an extension telephone network. The second telecommunication network 70 is a wireless communication network. The circuit switching device 20 constitutes an intercom system together with the first call device (interphone device) 30. That is, the interphone system is connected to the interphone device through the interphone device (first communication device 30) and the extension telephone network (first telecommunications network 60), and is connected to the interphone device and the telecommunications network (second telecommunications network 70). And a circuit switching device 20 for establishing a call with the connected call device (second call device 40).

The first call device 30 is, for example, an intercom device installed at the entrance of a house. Note that the interphone device may be composed of an interphone slave unit installed at the entrance of a house and an interphone master unit installed in the house. The first call device 30 is connected to the circuit switching device 20 through the first telecommunication network 60. The line (first line) 1 described above is a line assigned to the first call device 30 when the first call device 30 communicates with the circuit switching device 20.

The first call device 30 includes a device communication unit 31, a call button 32, a control unit 33, an information acquisition unit 34, and a call unit 35.

The equipment communication unit 31 is a communication interface for communicating with the circuit switching device 20 through the first telecommunication network 60.

The call button 32 is a button for a visitor to call a resident.

The information acquisition unit 34 is configured to acquire predetermined information. The predetermined information is, for example, visitor information. The information acquisition unit 34 includes, for example, an imaging device (not shown) such as a CCD camera, and is configured to photograph the visitor by the imaging device when the visitor operates the call button 32. In this case, the predetermined information is a visitor's image.

The call unit 35 includes a speaker and a microphone (not shown). The call unit 35 is used for a visitor to make a call with a resident using the first call device 30. The call unit 35 converts the voice input to the microphone into a voice signal that is an electrical signal and outputs the voice signal to the control unit 33. In addition, the call unit 35 converts the audio signal received from the control unit 33 into audio using a speaker and outputs the audio.

When the call button 32 is operated, the control unit 33 controls the device communication unit 31 to make a call request (first call request) for requesting a call with a resident through the first telecommunication network 60. Configured to send to. In particular, in the first embodiment, the control unit 33 sends the first call request to the circuit switching device 20 through the first telecommunication network 60 together with the predetermined information (visitor image) acquired by the information acquisition unit 34. Configured to transmit.

Further, when the call button 33 is operated, the control unit 33 notifies the visitor that the call is being made. For example, the control unit 33 causes the speaker to periodically output a ringing sound (for example, a sound such as “ping-pong”) while calling.

The second call device 40 is, for example, a mobile phone device owned by a resident of a house where the first call device 30 is installed. In the circuit switching device 20, the second call device 40 is associated with the first call device 30. The second call device 40 is connected to the circuit switching device 20 through the second telecommunication network 70. The above-described line (second line) 2 is a line assigned to the second call device 40 when the second call device 40 communicates with the circuit switching device 20.

The third call device 50 is, for example, a mobile phone device possessed by a person other than the resident. In the circuit switching device 20, the third call device 50 is not associated with the first call device 30. The third call device 50 can use the second telecommunication network 70 in the same manner as the second call device 40. The line (third line) 3 described above is a line assigned to the third call device 50 when the third call device 50 communicates with the circuit switching device 20.

The line switching apparatus 20 includes a first communication unit 21, a second communication unit 22, and a line connection unit 23 that controls the first communication unit 21 and the second communication unit 22.

The first communication unit 21 is a communication interface for communicating with the first call device 30 through the first telecommunication network 60.

The second communication unit 22 is a communication interface for communicating with the second call device 40 through the second telecommunication network 70. Such a second communication unit 22 is configured to communicate with a communication device that can be connected to the second telecommunication network 70. Therefore, the second communication unit 22 is configured to communicate with the third call device 50 through the second telecommunication network 70.

The line connection unit 23 includes a holding unit 231, a calling unit 232, and a control unit 233.

When the first communication unit 21 receives the first call request from the first call device 30, the holding unit 231 controls the first communication unit 21 to communicate between the first call device 30 and the first communication unit 21. Is configured to be maintained for a predetermined period. That is, when the first communication unit 21 receives the first call request from the first call device 30, the holding unit 231 maintains the state where the first line 1 is assigned to the first call device 30 for the predetermined period. The holding unit 231 ends the communication between the first call device 30 and the first communication unit 21 when the predetermined period has elapsed since the first communication unit 21 received the first call request from the first call device 30. That is, the holding unit 231 disconnects the first line 1. The predetermined time is, for example, described later in the circuit switching device 20 using the second call device 40 after considering whether or not the resident should make a callback by looking at a later-described callback message received by the second call device 40. Is longer than the time required to send the second call request. Such a holding unit 231 is realized by the line holding unit 4, the session management unit 11, and the like.

When the first communication unit 21 receives the first call request from the first call device 30, the calling unit 232 creates a callback message requesting the second call device 40 to call back to the first call device 30. Configured as follows. The calling unit 232 is configured to control the second communication unit 22 and transmit the created callback message to the second call device 40. The calling unit 232 transmits a callback message to the second call device 40 using e-mail, for example. A short message or a mobile phone application may be used instead of the e-mail. The callback message is, for example, a message that notifies a telephone number for callback (for example, a telephone number assigned to the circuit switching device 20) and visitor information. In the case of an e-mail, a telephone number for callback and a message notifying that there has been a visit are described in the body of the e-mail. In this way, the circuit switching device 20 does not make a call to the second call device 40 but transmits a callback message using e-mail or the like. Therefore, unlike the case of making a call, a plurality of call devices can be associated with the first call device (interphone device) 30. In particular, in the first embodiment, when the first communication unit 21 receives the first call request from the first call device 30 and the predetermined information (visitor information), the calling unit 232 receives the second call device. A callback message for requesting a callback to the first call device 30 is created at 40 using the predetermined information. That is, visitor information is added to the callback message. The visitor information is, for example, a visitor image. For example, when a callback message is transmitted by e-mail, a visitor's image is attached to the e-mail. Thereby, the user can select a visitor and call back. Such a calling unit 232 is realized by the line holding unit 4, the device management unit 6, the line call invitation unit 8, the data management unit 9, the session management unit 11, the IP distribution unit 12, and the like.

The control unit 233 receives the first call from the second call device 40 while the communication state between the first call device 30 and the first communication unit 21 is maintained (that is, while the first line 1 is held). It is configured to determine whether the second communication unit 22 has received a two-call request. That is, the control unit 233 sends a second call request from the second call device 40 to the second communication unit 22 while the holding unit 231 maintains the communication state between the first call device 30 and the first communication unit 21. Is received. The second call request is a call request designating a telephone number for callback from the second call device 40 (that is, a call request from the second call device 40 to the circuit switching device 20).

The control unit 233 sends a second call request from the second call device 40 to the second communication while the communication state between the first call device 30 and the first communication unit 21 is maintained (that is, within the predetermined period). When it is determined that the unit 22 has received, the first communication unit 21 and the second communication unit 22 are controlled to establish a call between the first call device 30 and the second call device 40. That is, the control unit 233 connects the second line 2 assigned to the second call device 40 to the first line 1. When the control unit 233 connects the second line 2 to the first line 1, the control unit 233 controls the first communication unit 21 to transmit a first response signal to the first call device 30, and to change the second communication unit 22. The second response signal is transmitted to the second call device 40 under control.

The control unit 33 activates the call unit 35 when the device communication unit 31 receives the first response signal from the circuit switching device 20. During the activation of the call unit 35, the control unit 33 outputs the audio signal from the second call device 40 received by the device communication unit 31 to the call unit 35, and the audio signal from the call unit 35 is output by the device communication unit 31. 1 Outputs to the circuit switching device 20 via the telecommunications network 60. While the communication state between the first communication device 30 and the first communication unit 21 is maintained (that is, within the predetermined period), the control unit 33 notifies the visitor that the call is being made.

When the second call device 40 receives the second response signal from the circuit switching device 20, the second call device 40 starts a call operation. That is, during this call operation, the second call device 40 converts the received voice signal from the first call device 30 into a voice and outputs it, and converts the input voice into a voice signal and converts it into the second telecommunications network. The data is output to the circuit switching device 20 via the network 70.

In a state where the second line 2 is connected to the first line 1, the control unit 233 controls the second communication unit 22 to control the voice signal from the first call device 30 received by the first communication unit 21. The voice signal from the second call device 40 transmitted to the second call device 40 and received by the second communication unit 22 is transmitted to the first call device 30 by controlling the first communication unit 21. Thereby, the control unit 233 establishes a call between the first call device 30 and the second call device 40.

The control unit 233 is configured not to accept a call request designating a telephone number for callback from a call device other than the second call device 40 (for example, the third call device 50). In the first embodiment, the control unit 233 stores the telephone number of the second call device 40, and when the second communication unit 22 receives the call request, the telephone number of the transmission source of the received call request is the first number. It is comprised so that it may determine whether it corresponds with the telephone number of the 2 telephone apparatus 40. FIG. If the telephone number of the transmission source of the received call request matches the telephone number of the second call device 40, the control unit 233 holds the line (second line 2) and sets the second line 2 as the first number. Connect to line 1. On the other hand, if the telephone number of the transmission source of the received call request does not match the telephone number of the second call device 40, the control unit 233 disconnects the line (for example, the third line 3), and the third line 3 is not connected to the first line 1.

Such a control unit 233 is realized by the line control unit 5, the device management unit 6, the exclusive control unit 7, the data management unit 9, the data processing unit 10, the session management unit 11, and the like.

FIG. 11 is a diagram for explaining the circuit switching device 20 according to the second embodiment of the present invention. The circuit switching device 20 includes a processing unit similar to that shown in FIG. 1, but further includes a function of incorporating a pre-procedure. That is, the line holding unit 4 holds the connection of the line 2 in a standby state when there is a callback from the line 2 after a call is made without making a voice call from the line 1. The line call invitation unit 8 sends a message to the line 2 to call back to the line 1 when a call is made without making a voice call from the line 1, and there is a callback from the line 2 In this case, a control message is transmitted to the line 1 so that the line 1 is automatically called. The line control unit 5 connects the line 1 and the line 2 when the line 1 is automatically called.

Hereinafter, the configuration of the circuit switching apparatus 20 according to the second embodiment of the present invention will be described together with its operation. First, as indicated by (1) in FIG. 11, when a call is made from the line 1 to the line switching apparatus 20 without making a voice call, the line 1 enters a standby state. Therefore, the line call invitation unit 8 transmits a message to the line 2 to call back to the line 1 as indicated by (2) in FIG. As a result, as indicated by (3) in FIG. 11, when the line 2 calls and the line control unit 5 receives the callback, the line holding unit 4 holds the connection of the line 2 in a standby state. Further, as indicated by (4) in FIG. 11, the line call invitation unit 8 transmits a control message to the line 1 to automatically call the line 1. Thereby, as shown by (5) in FIG. 11, the line control unit 5 connects the voice line from the line 1 and the voice line from the line 2 to establish a conversation. In this way, since the connection time between the line 1 and the line switching apparatus 20 while the line 1 is waiting for the callback is shortened, the processing load on the line switching apparatus 20 can be reduced, and the line 1 Band consumption of the access line to the exchange device 20 can be suppressed.

The circuit switching device 20A of the second embodiment described above is different from the circuit switching device 20 of the first embodiment in a circuit connection unit 23A as shown in FIG. The first call device 30A of the second embodiment is different from the first call device 30 of the first embodiment in a control unit 33A.

When the call button 32 is operated, the control unit 33A controls the device communication unit 31 to receive a signal indicating that a call has been made (call signal for notifying that the call has been called from the first call device 30A). 1 It is configured to transmit to the circuit switching device 20A through the telecommunications network 60. That is, unlike the first embodiment, the control unit 33A does not transmit a call request (first call request) to the circuit switching device 20A even when the call button 32 is operated. The control unit 33A is configured to transmit a call signal to the circuit switching device 20A through the first telecommunication network 60 together with the visitor information (visitor image) acquired by the information acquisition unit.

The line connection unit 23A includes a holding unit 231A, a calling unit 232A, and a control unit 233A.

When the first communication unit 21 receives the calling signal from the first calling device 30A, the calling unit 232A creates a callback message requesting the second calling device 40 to call back to the first calling device 30A. Composed. In addition, the calling unit 232A is configured to control the second communication unit 22 and transmit the created callback message to the second call device 40. Also in the second embodiment, when the first communication unit 21 receives the call message from the first call device 30A and the visitor information, the call unit 232A uses the caller message as the visitor information. Configured to create.

When the holding unit 231A receives a call request (second call request) from the second call device 40 after transmission of the callback message of the calling unit 232A, the holding unit 231A controls the second communication unit 22 and the second call device 40 and the second call device 40. 2 is configured to maintain a communication state with the communication unit 22. That is, when the second communication unit 22 receives the second call request from the second call device 40, the holding unit 231A maintains the state where the second line 2 is assigned to the second call device 40. That is, the holding unit 231A holds the second line 2.

When the second communication unit 22 receives the second call request from the second call device 40 after transmitting the callback message, the calling unit 232A controls the first communication unit 21 to perform the first communication with the first call device 30A. It is comprised so that communication with the unit 21 may be started. For example, when the second communication unit 22 receives the second call request from the second call device 40 after transmitting the callback message, the calling unit 232A controls the first communication unit 21 to issue the call to the first call device 30A. A call signal (control message) is transmitted.

When the device communication unit 31 receives the call signal (control message) from the circuit switching device 20A, the control unit 33A controls the device communication unit 31 to send a call request to the circuit switching device 20A through the first telecommunication network 60. Configured to transmit.

When the first communication unit 21 receives a call request from the first call device 30A, the holding unit 231A controls the first communication unit 21 to start communication between the first call device 30A and the first communication unit 21. Configured as follows. That is, the holding unit 231A maintains a state where the first line 1 is assigned to the first call device 30A (the holding unit 231A holds the first line 1).

When communication between the first call device 30A and the first communication unit 21 is started, the control unit 233A controls the first communication unit 21 and the second communication unit 22 to control the first call device 30A and the second call device. 40 is configured to establish a call with 40. That is, the control unit 233A connects the second line 2 assigned to the second call device 40 to the first line 1. When the control unit 233A connects the second line 2 to the first line 1, the control unit 233A controls the first communication unit 21 to transmit a first response signal to the first call device 30A, and to connect the second communication unit 22 to the first communication unit 30A. The second response signal is transmitted to the second call device 40 under control.

When the device communication unit 31 receives the first response signal from the circuit switching device 20A, the control unit 33A performs the same operation as the control unit 33 described above.

As described above in detail, according to the embodiment (the first embodiment or the second embodiment) of the present invention, the cost required for providing the circuit switching service can be reduced, and as a result, it is easily introduced. It is possible to provide a circuit switching device that can perform such an operation and an intercom system including the same. That is, according to the circuit switching device 20 in the embodiment of the present invention, since the connection of the line 1 is held in a standby state for a certain period of time, even if a call is made to a partner that is difficult to respond immediately, Can be recognized. Further, since the line 1 is an extension, the cost required for the line 1 can be reduced. Further, since the line 1 is a line on which IP communication is performed, the cost required for the line 1 can be reduced. In addition, since the information acquired by the interphone device is transmitted to the line 2, the user of the line 2 can determine whether or not a callback is necessary based on the information acquired by the interphone device. In addition, if there is no callback even after a certain time has elapsed, it is possible to prepare for the next call, so that, for example, if the line 1 is an interphone device, the convenience to the next visitor can be increased. In addition, since the connection time between the line 1 and the line switching apparatus 20 while the line 1 is waiting for the callback is shortened, the processing load on the line switching apparatus 20 can be reduced and the circuit switching apparatus 20 can be reduced. The bandwidth consumption of the access line can be suppressed.

The above embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and various modifications can be made depending on the design and the like as long as the technical idea according to the present invention is not deviated from this embodiment. Of course, it is possible to change.

Claims

A circuit switching device that is connected to an intercom device that acquires visitor information through an IP network and is connected to a call device through a telecommunication network, and establishes a call between the interphone device and the call device,
A first communication unit for communicating with the intercom device through the IP network;
A second communication unit for communicating with the call device via the telecommunications network;
A line connection unit for controlling the first communication unit and the second communication unit;
The line connection unit includes a calling unit and a control unit,
When the first communication unit receives the first call request from the interphone device and the visitor information, the calling unit sends a callback message requesting the call device to call back to the interphone device. Created using the information of the person, and configured to control the second communication unit and send the created callback message to the call device,
The control unit determines whether the second communication unit has received a second call request from the call device while the communication state between the intercom device and the first communication unit is maintained, When it is determined that the second communication unit has received the second call request from the call device while the communication state between the intercom device and the first communication unit is maintained, the first communication unit and the first communication unit 2. A circuit switching device configured to control a communication unit to establish a call between the intercom device and the call device.
The circuit switching device according to claim 1, wherein the visitor information is an image of the visitor.
3. The circuit switching apparatus according to claim 1, wherein the IP network is an extension telephone network.
When the first communication unit receives the first call request from the interphone device, the line connection unit controls the first communication unit to change the communication state between the interphone device and the first communication unit. The circuit switching device according to any one of claims 1 to 3, further comprising a holding unit configured to maintain for a predetermined period.
A circuit switching device that is connected to an intercom device that acquires visitor information through an IP network and is connected to a call device through a telecommunication network, and establishes a call between the interphone device and the call device,
A first communication unit for communicating with the intercom device through the IP network;
A second communication unit for communicating with the call device via the telecommunications network;
A line connection unit for controlling the first communication unit and the second communication unit;
The line connection unit includes a calling unit, a holding unit, and a control unit,
When the first communication unit receives a call signal for notifying that the call has been called from the interphone device and the visitor information, the call unit requests the call device to call back to the interphone device. Creating a message using the visitor information, and controlling the second communication unit to send the created callback message to the call device;
When the holding unit receives a call request from the call device after transmitting the callback message from the call unit, the holding unit controls the second communication unit to control the communication state between the call device and the second communication unit. Is configured to maintain
When the call unit receives the call request from the call device after transmitting the callback message, the call unit controls the first communication unit to start communication between the intercom device and the first communication unit. Configured,
When the communication between the intercom device and the first communication unit is started, the control unit controls the first communication unit and the second communication unit to perform a call between the interphone device and the call device. A circuit switching device configured to establish a circuit.
Intercom equipment,
A circuit switching device that is connected to the interphone device through an IP network and establishes a call between the interphone device and a call device connected to a telecommunication network,
The intercom device has a device communication unit that communicates with the circuit switching device through the extension telephone network, a call button, a control unit, and an information acquisition unit that acquires visitor information.
When the call button is operated, the control unit controls the device communication unit to send a first call request together with the visitor information acquired by the information acquisition unit through the IP network to the circuit switching device. Configured to send to
The circuit switching device
A first communication unit for communicating with the intercom device through the IP network;
A second communication unit for communicating with the call device via the telecommunications network;
A line connection unit for controlling the first communication unit and the second communication unit;
The line connection unit includes a calling unit and a control unit,
When the first communication unit receives the first call request and the visitor information from the interphone device, the calling unit sends a callback message requesting the call device to call back to the interphone device. Created using visitor information, configured to control the second communication unit and send the created callback message to the call device;
When the control unit receives a second call request from the call device while the communication state between the intercom device and the first communication unit is maintained, the control unit switches the first communication unit and the second communication unit. An intercom system configured to control and establish a call between the interphone device and the call device.
The interphone system according to claim 6, wherein the visitor information is an image of the visitor.