JP2003061122A - Communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a communication system by which a call of a mobile terminal can automatically be connected to a caller of an incoming call even when the caller of the mobile terminal does not know the caller of the incoming call in the case that the speech of the incoming call once received is finished and the called party makes a return call. SOLUTION: A management device 11 for incoming call information of an absence party is provided with a storage means 31 that stores a caller number notified by a mobile terminal 15 whose call is connected to an analog line terminal 14 at the arrival of an incoming call from a public network 21 as absence party addressed incoming call information. A line controller 10 extracts a caller number stored in the storage means, makes a call to the caller number via the analog line terminal at the arrival of a call from a mobile terminal 16 other than the mobile terminal connected at the arrival of an incoming call from the public network 21, automatically makes a call to the caller of the absence party addressed incoming call information and connects the call to the line so as to easily make a return call to the caller of the incoming call whose speech is finished.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication system having an automatic connection function for making a return call to an originator of an incoming call which has completed a call in a private telephone system.

[0002]

2. Description of the Related Art In a telephone system including a conventional private telephone system, a service utilizing the caller ID notification function of a public network when receiving a call is used to connect to a network control device such as a server and then first respond to the network control device. Depending on the availability of the corresponding telephone on the called side, if there is space, connect to the telephone, if there is no space, make a response until an idle telephone occurs and connect to the telephone when it becomes available, When the caller disconnects the call, from the telephone number acquired by the caller number notification function of the public network stored in the server,
The call was connected to the caller by automatically calling and connecting the call.

Further, the technique of notifying and displaying the caller's number to the receiving terminal when receiving a call, as in the mobile phone system, also provides a service for displaying the caller's phone number when receiving a call, as described in Japanese Patent No. 3081504. is there.

[0004]

However, the above method is
It can be installed in a large-scale server system such as a call center that has a large number of outside calls and allocates incoming calls in the order in which free terminals are generated. Once connected, the next incoming call cannot be accepted. It is possible to register the caller number of only unanswered incoming calls by preparing a storage device of a certain size on the server side, but to make outgoing calls again for calls that have completed incoming / answered calls. , It is necessary to store the caller ID notification information of all incoming calls including the incoming call information in the storage device of the network control device that is the server, and to store the caller telephone number at the time of all incoming calls. It requires a large capacity and is not realistic.

The caller number display service disclosed in Japanese Patent No. 3081504 is used when calling between individual users in a public communication network or when an incoming call is received from the individual user on the receiving side equipped with the caller number display service. Since the person's telephone number is the same as the personal telephone number, the caller can be identified. However, in a private telephone system where the originator's place of call is used in a company or the like, it has a plurality of public network telephone numbers and a plurality of private network telephone numbers, and the private telephone system uses the public network telephone number and the private network telephone. Number 1
In many cases, it does not correspond to pair 1, and when making a call from the private network telephone number, the public network telephone number is displayed on the called side. However, the local network telephone number, which is the calling number of the caller, cannot be specified in the display service because the caller cannot reach the called party. In addition, if the called party does not go off-hook (call connection) for the incoming call, services such as voice mail function and history retention are
At present, it has already been realized in the public or in-house telephone network systems, but no service is provided for the user to confirm the call again for the communication once received.

The present invention has been made in view of the above points, and even if the received incoming call is completed and the connection is disconnected, the caller of the incoming call is sent from the receiving side of the incoming call. It is an object of the present invention to obtain a communication system having an automatic connection function that allows a call to be made without calling the connection identification address of the other party such as the caller's telephone number when making a call.

[0007]

In order to solve the above-mentioned problems, a communication system having an automatic connection function according to the present invention,
The LAN connected to the public network and the L base via a wireless base station.
In a communication system comprising a plurality of mobile terminals connected to an AN, line control means for performing call control between an external terminal connected to the LAN and connected to the public network, and a mobile terminal connected to the LAN , When the mobile terminal that should originally receive the incoming call from the external terminal cannot receive the incoming call, if the mobile terminal that replaces the incoming call receives the incoming call, enter the ID of the original mobile terminal on the alternative mobile terminal that received the incoming call. However, the line control means further comprises storage means for storing the input ID and the telephone number of the external terminal included in the incoming call as a pair. When a call including the terminal ID is executed from any mobile terminal including the original and alternative mobile terminals, an external terminal having the telephone number stored as a pair with the ID in the storage means. By providing a means for transmitting the call to, after the incoming call to the sender that sent the incoming call to the absence, in which automatically connects a call folded.

By doing so, even if the call once accepted is completed and the call is returned, even if the caller of the mobile terminal does not know the outgoing call, the incoming call is automatically received. It is possible to provide a service that enables automatic connection to the sender.

The storage means is either connected to the LAN or provided inside the line control means.

[0010]

1 is a block diagram showing the configuration of a communication system having an automatic connection function according to the present invention.
As shown in FIG. 1, a communication system having an automatic connection function according to the present invention is LA which is a communication path as a network.
A line control device 10 for controlling call connection of a private telephone system using N (or WAN) 20 as a communication path, and an absentee incoming call information management device for communicating with the line control device 10 and managing absentee incoming call information. 11 is an interface with wireless base stations 12 and 13 that perform wireless communication with mobile terminals 15 and 16, and a general public network 21 that is a communication path connected to a public line control device having a caller number notification function. The analog line terminal 14 is provided.

Here, the absentee incoming call information management device 11
Is a communication control unit 3 that communicates with the line control device 10.
0, a first storage unit 31 that temporarily stores a caller number, and a second storage unit 32 that stores absentee incoming call information. Further, one mobile terminal 15 and 16 is assigned to each staff member, and each mobile terminal 15 and 16 is provided with a display device.

Next, the operation of the above configuration will be described with reference to the sequence diagrams shown in FIGS. First,
FIG. 2 is a sequence diagram showing an example of a communication protocol of a procedure for storing incoming information for an absentee at the time of an incoming call in the communication system shown in FIG. Note that, in FIG. 2, for convenience of explanation, the public network 21 shown in FIG.
4 is designated as B2, the line control unit 10 is designated as B3, the absentee incoming call information management unit 11 is designated as B4, the radio base station 12 is designated as B5, and the mobile terminal 15 is designated as B6.

In addition, phase T1 shown in FIG. 2 is a time for performing a call connection protocol when a call arrives, and phase T2 is
The time during which a voice call is performed between the public network and the mobile terminal, the phase T3 is the time during which the absentee address information is stored during the call in the phase T2, and the phase T4 is the time when the call is completed and the call disconnection protocol is performed. Show.

Further, in phase T1, I1 is
It is an incoming call notification from the public network B1 and also includes an incoming call signal and a caller number. I2 to I7 are IP packets constituting a call connection protocol at the time of incoming call, I2 is an incoming call notification to the line controller B3 (caller number is also included in the packet), and I3 is an incoming call to the wireless base station B5. Notice, I4
Ring communication to the mobile terminal B6, I5 is an off-hook response notification, I6 is a response notification from the radio base station B5, and I7 is
This is a connection response notification.

In the phase T2, I8 to I
10 is the exchange of voice data of IP packets,
I8 is a voice call part of the public network, I9 is a call part using voice packets on the LAN, and I10 is a voice call part of a wireless section.

Further, in phase T3, I11 to I20 are IP packets forming a protocol for storing the absentee incoming call information during a call, and I11 is the absent incoming call information from the mobile terminal B6. Registration start code notification, I12 is registration start notification, I13 is code acceptance response, I14 is acceptance response notification to mobile terminal B6, I1
5 is an absentee ID notification, I16 is an absentee ID notification from the radio base station B5, I17 is an absentee ID notification, I18
Is an absentee-destined call information creation completion notice, I19 is an absentee-destined call information creation completion notice, and I20 is also an absentee-destined call information creation completion notice.

Further, in the phase T4, I21 to I27 are IP packets constituting the call disconnection protocol, I21 is on-hook notification, and I22 is
Disconnection notification, I23 is disconnection notification, I24 is public network B1
Is a disconnection notification, I25 is a disconnection response notification, I26 is a disconnection completion notification, and I27 is a disconnection completion response notification.

The absentee-addressed incoming call information storage processing at the time of an incoming call will be described with reference to FIG. First, in phase T1, when an incoming call is generated from the public network B1, a call between the analog line terminal B2 and the mobile terminal B6 is performed according to the call connection protocol procedure from the incoming call notification I1 to the connection response notification I7 in FIG. The connection is made. At this time, the line control device B3 notifies the absentee incoming call information management device B4 of the caller number notification included in the incoming call notification I2. The absentee incoming call information management device B4 is the absentee incoming call information management device 11 shown in FIG. 1, and extracts the caller number from the notification I0 accepted by the communication control unit 30 shown in FIG. First to show
It is stored in the storage unit 31 of.

When the protocol up to the connection response notification I7 is completed, the process proceeds to phase T2, where I8 to I1.
A voice call path of 0 is established, and a voice call is started.

Next, in the phase T3, the mobile terminal B6
Then, when the key input example “# 1069 #” is input as the absentee incoming call information registration start code notification I11, the key input value is notified to the wireless base station B5 by the registration start code notification I11. The radio base station B5 starts waiting for the registration reception process from the code notification, and transmits the registration start notification I12 to the line controller B3. The line controller B3
When the registration start notification I12 is received, the registration process standby is started, and the code acceptance response notification I13 is transmitted to the radio base station B5. The radio base station B5 receives the code acceptance response notification I
When receiving 13, the acceptance response notification I1 is sent to the mobile terminal B6.
4 is transmitted. The mobile terminal B6 receives the acceptance response notification I14.
Is received, the preparation OK is displayed on the display device.

Next, the extension number of this telephone system is keyed in as an ID number of the absentee from the mobile terminal B6.
The input number is transmitted to the mobile terminal B6 as the absentee ID notification I15. Since the wireless base station B5 is already ready for the registration process standby, it transmits the received input value to the line controller B3 by placing it on the absentee ID notification I16.
Upon receiving the absentee ID notification I16, the line control device B3 transmits the absentee ID notification I17 with an ID number to the absentee incoming call information management device B4.

When the absentee incoming call information management device B4 receives the absentee ID notification I17, the communication controller 3 shown in FIG.
At 0, the ID number is acquired from the received data, the absentee ID is stored in the second storage unit 32 of FIG. 1, and then the caller stored in the first storage unit 31 shown in FIG. Store the phone number. When the storage is completed, an absentee-destined incoming call information creation completion notification I18 is transmitted to the line controller B3.

The line controller B3, which has received the absentee-destined call information creation completion notice I18, stops the registration process standby process and sends the absentee-destined call information creation completion notice I19 to the radio base station B5. Upon receiving the absentee-addressed incoming call information creation completion notification I19, the wireless base station B5 stops the registration process standby process and transmits an absentee-addressed incoming call information creation completion notification I20 to the mobile terminal B6. The mobile terminal B6 which has received the absentee incoming call information creation completion notice I20 sends a completion code to the display device.

Thereafter, upon completion of the call, in a phase T4, the call disconnection processing is performed by the call disconnection protocol of I21 to I27. That is, when the on-hook notification I21 is transmitted from the mobile terminal B6 to the radio base station B5,
The radio base station B5 notifies the line control device B3 of the disconnection notification I22.
And the line control device B3 sends the analog line terminal B2.
The disconnection notice I23 is sent to the analog line terminal B2,
The disconnection notice I24 is transmitted to the public network B1. After that, the analog line terminal B2 sends a disconnection response notification I25 to the public network B1 to the line control device B3, the line control device B3 sends a disconnection completion notification I26 to the radio base station B5, and the line from the radio base station B5. Disconnection completion response notification I27 to control device B3
The disconnection process ends by sending "."

Next, FIG. 3 is a sequence diagram showing an example of a communication protocol of a procedure for confirming incoming information addressed to an absentee / automatic transmission in the communication system shown in FIG. In FIG. 3, for convenience of explanation, the mobile terminal 16 shown in FIG.
Radio base station 13 is C2, line control device 10 is C3, absentee incoming call information management device 11 is C4, analog line terminal 1
4 is designated as C5 and the public network 21 is designated as C6.

Further, T5 shown in FIG. 3 is a call connection protocol phase at the time of confirming information, T6 is a call phase, and T7 is a call disconnection protocol phase for a call connected call due to information confirmation.

Further, in phase T5, I30 and I31 are call notifications, I32 is a destination acquisition notification, and I30.
33 is a caller acquisition response notification, I34 is a call notification, I
Reference numeral 35 is a call signal to the public network C6, and I36 is a public network C6.
6 is a connection signal, I37 is a call response notification, I38
Is a call connection notification, and I39 is a call connection response notification.

In the call phase T6, I40
Is a voice call portion in a wireless section, I41 is a voice packet call portion on a LAN, and I42 is a voice call portion with a public network.

Further, in phase T7, I43
Is an on-hook notification, I44 is a call disconnection notification, I45
Is a call completion information deletion notification, I46 is an information deletion completion notification, I47 is a call disconnection notification, I48 is a disconnection signal to the public network, I49 is a disconnection response notification, I50 is a disconnection completion notification, and I51 is , A disconnection completion response notification.

The incoming call information confirmation / automatic transmission process for the absentee will be described with reference to FIG. In Phase T5,
A procedure for confirming an incoming call at the mobile terminal C1 will be described.
The telephone number assigned to the absentee incoming call information management device C4 is "9900", and the ID of the mobile terminal C1 is "5002".
And

First, the mobile terminal C1 calls "9900". The mobile terminal C1 adds the telephone number "9900" and the telephone number "500" as its own terminal ID in the call notification I30.
2 ”is added and transmitted. Upon receiving the call notification I30, the radio base station C2 acquires the connection destination telephone number "9900" and the caller telephone number "5002" from the call notification I30, and sends the call notification I31 to the line control device C3. The acquired telephone number is added and transmitted.

Upon receiving the call notification I31, the line control device C3 acquires the connection destination telephone number, and the acquired telephone number is
If it matches the telephone number assigned to the absentee incoming call information management device C4, the transmission source telephone number is added to the transmission destination acquisition notification I32 for transmission. Upon receiving the destination acquisition notification I32, the absentee incoming call information management device C4 retrieves the additional information (source ID) of the destination acquisition notification I32 from the second storage unit 32 shown in FIG. To get.
Then, the caller number is added to the caller acquisition response notification I33 and transmitted. Upon receiving the caller acquisition response notification I33, the line control device C3 extracts the additional telephone number, adds the extracted telephone number to the analog line terminal C5, and transmits the call notification I34.

The analog line terminal C5 sends a call notification I34.
When receiving the call, the additional telephone number is extracted, and the calling signal I35 is extracted.
As a result, the public telephone network C6 is dialed up by the additional telephone number. The public network C6 immediately responds, and the connection signal I3
Returns 6 Upon receiving the connection signal I36, the analog line terminal C5 transmits a calling response notification I37. Upon receiving the call response response I37, the line control device C3 transmits a call connection notice I38. Upon receiving the call connection notice I38, the radio base station C2 transmits the call connection response notice I39 to the line control device C3.

After that, the call phase T6 is reached, and the voice call can be performed by establishing the call path.

Next, the protocol processing at the end of the call will be described. First, in order for the mobile terminal C1 to complete the call,
When the on-hook is performed, the on-hook notification I43 is transmitted. Upon receiving the on-hook notification I43, the radio base station C2 transmits the call disconnection notification I44. Line control device C3
Upon receiving the call disconnection notification I44, transmits a call completion information deletion notification I45 to the absentee incoming call information management device C4. Upon receiving the outgoing call information deletion notification I45, the absentee incoming call information management device C4 deletes the telephone number of the incoming call information used for the call connection. When the deletion is completed, the information deletion completion notice I46 is transmitted. The line controller C3
When the information deletion completion notice I46 is received, the call disconnection notice I4
7 is transmitted to the analog line terminal C5.

The analog line terminal C5 sends the call disconnection notification I4.
When 7 is received, a disconnection signal I48 is transmitted to the public network C6 to perform disconnection processing, and a disconnection response notification I49 is transmitted to the line control device C3. Upon receiving the disconnection response notification I49, the line control device C3 transmits a disconnection completion notification I50 to the radio base station C2. Radio base station C2
Upon receiving the disconnection completion notice I50, initializes the call connection state and transmits a disconnection completion response notice I51. Upon receiving the disconnection completion response notification I51, the line control device C3 initializes the call connection state of line control.

Here, when the response result of the callee acquisition notice I32 is no information in the line control device C3, the disconnection completion notice I50 is transmitted to perform the disconnection process.

The line connection function in the communication system according to the present invention described above is summarized as follows. IS
When an incoming call to an absentee is taken off-hook by using the caller number notification function of the public network 21 including the DN, first, the analog line terminal 14 that receives the incoming call is the line control device 10
Send the caller ID notification phone number data to.

Next, the line control device 10 transmits the received caller number to the device that stores the absentee-destined incoming call information if the device stores the received call information to the LAN 20.
If the above-mentioned absentee incoming call information management device 11 is provided with a device for storing absentee-addressed incoming call information, the absentee incoming call information management device (hereinafter also simply referred to as an information management device) 11 is provided with a caller number as information data. To send as.

Further, the line control device 10 controls the call connection toward the radio base stations 12 and 13 and the mobile terminals 15 and 16 so that the incoming call can be communicated.

When the mobile terminals 15 and 16 take off-hook the incoming call, the call is started. The mobile terminals 15 and 16 that have accepted the incoming call confirm the desired caller from the call with the caller. At this time, if the caller is not the person who received the off-hook and the transfer function cannot be used for the desired caller, the mobile terminal 1 that accepts the incoming call
Keys 5 and 16 are used to enter the recording start code and the extension number of the caller. Mobile terminals 15, 1
6 uses the input key code as a base code for the radio base stations 12, 13
Send to.

Upon receiving the recording start code, the radio base stations 12 and 13 store the subsequent extension code.
Next, the radio base stations 12 and 13 transmit the recording start code and the extension number to the line control device 10 as, for example, information of the status response in the call control protocol.

When the line control device 10 receives the recording start code and the extension code as the status response information,
The device that manages the incoming call information addressed to the absentee is the line control device 1.
If 0, the absentee incoming call information is stored. Or LAN
It is transmitted to the above information management device 11. The line control device 10 or the information management device 11, which has received the recording start code and the extension number code, creates the information table data by using the extension telephone code as the search header in the caller number data stored at the time of the first incoming call. This information table data is used as incoming call information for the absentee.

Next, it is assumed that the callee of the incoming call is ready to make an extension call. The person having the extension number makes a call from the mobile terminal device so as to make a normal call to a call number assigned in advance for information confirmation. The mobile terminal device is connected to a radio base station on the LAN, and the radio base station sends a call notification of the mobile terminal to the line control device 10. The line control device 10 that has accepted the call causes the information management device 11 to determine the line control device 1 from the received extension number of the transmission source.
If it is 0, the extension number is transmitted and the sender number is searched and acquired. If the information management device 11 is a device on the LAN, the extension number is transmitted to the information management device 11 on the LAN to notify the search.

Further, the line control device 10 receives the caller number as a response notice after the above-mentioned search is completed. The line control device 10 controls the call from the received caller number to the analog line terminal on the LAN in the same manner as a normal call.

By doing so, when another person receives an incoming call addressed to himself and the call cannot be made even by processing such as transfer, and the call is disconnected, no matter where he is at his mobile terminal, Within the wireless space of the local wireless telephone system,
You can automatically talk with the other party just by confirming the incoming call.

Further, since no human work such as a contact work such as a memo is involved, erroneous contact can be eliminated.

[0048]

As described above, according to the present invention, when an incoming call is made from the public network, the caller number notified by the mobile terminal connected to the analog line terminal is sent to the absentee incoming call information. The caller number stored in the storage means is extracted by the line control device when a call is made from a mobile terminal other than the mobile terminal connected to the call when an incoming call is made from the public network. A call is accepted via the analog line terminal, the call is automatically sent to the source of the incoming call information for the absentee, and the line connection is established.The call once accepted is completed and the call is returned to the source of the incoming call. When making a telephone call, even if the caller of the mobile terminal does not know the outgoing call, it is possible to automatically connect to the originator of the incoming call.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a communication system having an automatic connection function according to the present invention.

FIG. 2 is a sequence diagram showing a communication protocol example of a procedure for storing incoming information for an absentee at the time of an incoming call in the communication system shown in FIG.

FIG. 3 is a sequence diagram showing an example of a communication protocol of an absentee addressee incoming information confirmation / automatic transmission procedure in the communication system shown in FIG. 1;

[Explanation of symbols]

10 Line control device 11 Absent person incoming call information management device 12, 13 Wireless base station 14 Analog line terminal 15, 16 Mobile terminal 20 LAN 21 public network 30 Communication control unit 31 First Storage Unit (Storage Means) 32 Second storage unit

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Claims (2)

[Claims] 1. A LAN connected to a public network, a plurality of mobile terminals connected to the LAN via a wireless base station, an external terminal connected to the LAN and connected to the public network, and an external terminal connected to the public network. In a communication system including a line control means for performing call control with a mobile terminal, when a mobile terminal that should originally receive an incoming call from the external terminal cannot receive the call, a mobile terminal that replaces the incoming call can receive the call. Storage means for inputting the ID of the original mobile terminal at a mobile terminal that has received the incoming call, and for storing the input ID and the telephone number of the external terminal included in the incoming call as a pair And the line control means is the ID of the original mobile terminal that the incoming call wishes to connect to.
Is executed from any mobile terminal including the original and alternative mobile terminals, the I
By providing means for transmitting the outgoing call to the external terminal having the telephone number stored as a pair with D, it is possible to return the incoming call to the sender who has transmitted the incoming call when he / she is absent. A communication system configured to automatically connect outgoing calls. 2. The communication system according to claim 1, wherein the storage means is provided in connection with the LAN or provided inside the line control means.