KR101313270B1 - Method and apparatus for providing one number service in enterprise communication environment - Google Patents

Abstract

Disclosed are a method and apparatus for providing a one number service in an enterprise communication environment. The one-number service application server according to the present invention stores an interworking phone number and a mobile phone number, and when a call is initiated through the company phone number, if the state of a channel corresponding to the company phone number is inactive, Connect the call between terminals with the mobile phone number linked with the phone number. If the channel state is active, connect the call with the internal phone number. Accordingly, even when a user who uses a private exchange in a corporate communication environment is connected to an external communication system instead of a private exchange, the user can receive a call using an internal telephone number.

Description

Method and apparatus for providing one number service in enterprise communication environment {Method and apparatus for providing one number service in enterprise communication environment}

One aspect of the present invention relates to a communication network service technology, and more particularly, to a call control technology between terminals connected through a combination of a private network and a public network.

Companies are adopting and using private branch exchanges (“PBXs”) for intra-company communications. In particular, due to the development of communication technology and the proliferation of IP networks, many companies are adopting IPPBX. In the case of using a PBX, a call can be initiated by using only an extension number without a station number in the company, and a call can be initiated by using a station number and extension number inside the company. In this case, the station number is assigned by the telecommunication network service provider connected to the PBX (regular communication service provider, separate telecommunication service provider).

In the case of having an in-company communication system based on the PBX, the terminal is fixed and fixed at a specific location in the company and thus cannot be used while moving. If IPPBX is introduced, fixed terminals can be installed and used, but VoIP softphones can be installed and used in notebook computers or smartphones, so that the company's telephone system can be used outside the company through an Internet connection.

When the VoIP softphone is installed and used in the smartphone, the user has two telephone numbers. The mobile phone number (e.g. 010-1111-1111) issued by the telecommunications network provider that provides communication service to the smartphone and the internal phone number (e.g. 042-111-1111) used in the company's telephone network using VoIP softphone will be. As more and more smartphones use an open platform where software installation and removal is open to users, it is easy to install and use VoIP softphones in smartphone type mobile terminals.

If a user installs a VoIP softphone in a mobile terminal of a smartphone type and uses a telephone system in a company, there is a limitation that the user must be connected to an IP network in advance. When a user using a smart phone wants to make a call, even if the user is not currently connected to the IP network, the user can connect to the IP network and execute the VoIP software.

However, when an external caller makes a call and the smartphone user is incoming, the terminal is not connected if the IP network is not connected or if the VoIP softphone is not running. Standby smartphones are not only connected to the IP network, but are often not running a VoIP softphone. If the call is not connected, the external caller has to find the user's mobile number and call again. Moreover, if an external caller does not know your mobile phone number, you will not be able to connect.

According to an aspect, a call control technique capable of receiving calls using an internal telephone number even when a user who uses a private exchange in an enterprise communication environment is connected to an external communication system rather than a private exchange is proposed.

One number service application server for controlling a call connection between terminals through an external communication network using a private exchange in a corporate communication environment according to an aspect, a database that stores the interworking phone number and the mobile phone number, and from the private exchange When the call is requested through the phone number, if the state of the channel corresponding to the internal telephone number is inactive, the control unit requests the private exchange to connect the terminal to the mobile phone number interworking with the internal telephone number by searching the database. Include.

Meanwhile, the method for providing a one number service according to another aspect includes storing the interworking phone number and the mobile phone number and in case the call is initiated through the internal phone number, the state of the channel corresponding to the internal phone number is deactivated. If the interworking between the terminal and the mobile phone number interworking with the phone number, and if the state of the channel active state includes the step of connecting the call to the company phone number.

According to the present invention, even when a user who uses a private exchange in an enterprise communication environment is connected to an external communication system instead of a private exchange, the call can be received using the internal telephone number. Therefore, it is possible to provide convenience for an external caller to contact a user who uses a private exchange at any time with only the internal telephone number.

Furthermore, by providing mobility to VoIP phones and allowing them to be called for 24 hours, users can overcome the problems of mobility constraints and conditional use (requires IP network connection and VoIP softphone execution) for users using private exchanges. . Therefore, it is possible to maximize the activation of the business model used by connecting to a private exchange using a smartphone.

In addition, it is possible to reduce the communication cost by using a communication service connected to the internal telephone network from the outside.

1 is a configuration diagram of an enterprise communication system according to an embodiment of the present invention;
2 is a flowchart illustrating a corporate communication process performed between elements of a corporate communication system according to an embodiment of the present invention;
3 is a flowchart illustrating a method of determining an activation state of a channel in a private exchange according to an embodiment of the present invention;
4 is a configuration diagram of a one number service application server according to an embodiment of the present invention;
5 is a flowchart illustrating a one number service method performed in a one number service application server according to an embodiment of the present invention;
6 is a reference diagram illustrating a control message transmitted between a private exchange and a one number service application server according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention of the user, the operator, or the custom. Therefore, the definition should be based on the contents throughout this specification.

1 is a configuration diagram of an enterprise communication system 1 according to an embodiment of the present invention.

Referring to FIG. 1, the enterprise communication system 1 includes a one number service application server 110, a private exchange 120, an internal network interworking communication network 130, a public telephone network 140, a mobile communication network 150, and an originating terminal. 160, a mobile terminal 170, an in-house terminal 180, and the Internet 190.

A private branch exchange (PBX) 120 is a device or software that performs circuit switching between terminals in an IP network. The private exchange 120 is linked to the internal network interworking communication network 130 provided by the internal network interworking provider.

The internal network interworking communication network 130 is interworked with various other communication networks including a Public Switched Telecommunication Network (PSTN) 140 and a mobile communication network 150 to enable communication between terminals internally and externally and externally. Let's do it.

The corporate communication system 1 includes an in-house terminal 180 or a mobile terminal 170 for communication within a workplace, and the aforementioned terminal is implemented in hardware or software form. A user purchases a mobile terminal 170 in the form of a smartphone from a specific communication network operator to use a communication service using a private exchange 120 outside the company, and installs and executes a VoIP softphone on the mobile terminal 170. In addition, the private exchange 120 may be used inside the internal network as well as outside the internal network.

The user can use two phone numbers for the mobile terminal 170. One is an internal telephone number A 171 assigned from the internal telephone network, and the other is a mobile telephone number B 172 assigned from the mobile communication network. However, in the case of the mobile phone number B is always a phone number at any time, in the case of the company phone number A, the mobile terminal 170 is connected to the IP network, and the VoIP softphone is running on the mobile terminal 170. You can only make calls to this number. In this case, the IP network connection of the mobile terminal 170 may be made using an access network of the mobile communication network 150 or through an access network of a separate IP network operator.

In general, when the mobile terminal 170 of the user is not connected to the IP network or connected to the IP network but the VoIP softphone is not running, the call is started from the calling terminal 160 using the internal telephone number A as the called number. If the call does not connect. If the caller only knows the user's phone number A 171, the call cannot be retried, and if the caller knows the user's mobile number B 172, then again using the mobile number B 172. The hassle of having to call.

In order to solve the above-mentioned problem, when the caller initiates a call to the internal telephone number A 171, the call connection can be made regardless of whether the mobile terminal 170 can connect to the VoIP call. To this end, the present invention interoperates the one number service application server 110 with the private exchange 120. The one-number service application server 110 monitors the incoming call to the internal telephone number A 171, and then checks whether the VoIP call is possible in the mobile terminal 170, and if the VoIP call is possible, the mobile terminal ( The call is connected to the VoIP softphone of 170, and the call is relayed to the mobile phone number B 172 if the VoIP call is not possible.

2 is a flowchart illustrating a corporate communication process performed between elements of a corporate communication system according to an embodiment of the present invention.

Referring to FIG. 2, the calling terminal 21 initiates a call using an internal telephone number (eg, 042-111-1111) (201). The call initiation request is forwarded to the private exchange 24 via the originating network 22 and the interworking interworking network 23 (202, 203).

The private exchange 24 notifies the one number service application server 25 that there is a call initiation request to the called party (204). The one number service application server 25 queries the private switching center 24 with the called channel status to determine the current state of the called party (205). The private exchange 24 returns the status of the queried caller channel to the one number service application server 25 (206).

The one number service application server 25 checks the state of the channel. As a result of the check, when the state of the channel is "inactive", the private exchange 24 sends a request message to connect the call to the mobile phone number (eg, 011-1111-1111) of the mobile terminal 27 stored in advance. (207). In contrast, when the state of the channel is "active", a request is sent to the private exchange 24 to connect the call to the original called number, and then a normal call connection procedure is executed (not shown).

The private exchange 24 receiving the call connection request transmits the call initiation request with the mobile number as the called number to the internal network interworking communication network 23 (208). The call initiation request is transmitted to the mobile terminal 27 via the mobile communication network 26 (209 and 210). Subsequently, when the mobile terminal 27 responds to the call initiation request, the call response message is transmitted to the private exchange 24 via the mobile communication network 26 and the internal network interworking communication network 23 (211, 212, 213). Subsequently, when the private exchange 24 sends the call response request to the calling terminal 21 through the calling network 22, the call is connected and communication between the calling terminal 21 and the mobile terminal 27 is performed (214, 215). .

3 is a flowchart illustrating a method of determining an activation state of a channel in a private exchange according to an embodiment of the present invention.

Referring to FIG. 3, the private exchange 33 sets a state of a channel corresponding to an internal telephone number to a default state of “inactive” (201). When the mobile terminal 31 is connected to the IP network 32 and executes a VoIP softphone to transmit a register message to the private exchange 33 (202, 203), the private exchange 33 follows the SIP protocol standard procedure. The registration is processed and a 200 OK message is sent to the mobile terminal 31 (304, 305). In this case, an expiration time must be described in the register message.

The private exchange 33 completes the register message processing, changes the channel state to an "active" state, and sets the valid time to the expiration time included in the register message (306). The private exchange 33 then changes the channel state back to the "inactive" state (208) when the elapsed time (e.g., 10 minutes) elapses (207), and changes the "inactive" state until the next register message is received. I never do that. Accordingly, when not responding to the channel state query 210, the channel state will be in an "inactive" state, and in response to the channel state query 210, the channel state will be in an "active" state.

4 is a configuration diagram of a one number service application server 40 according to an embodiment of the present invention.

Referring to FIG. 4, the one number service application server 40 includes a database 400, a communication unit 410, and a control unit 420.

The database 400 stores interworking company phone numbers and mobile phone numbers. That is, the database 400 stores the value of the internal telephone number versus the mobile telephone number as a pair, and at the same time stores a flag value of whether to provide one number service to the corresponding telephone number.

The communication unit 410 receives a notification message indicating that a call is initiated for a specific number from the private exchange 42 through the private exchange interworking protocol, and transmits a call connection request message to the private exchange 42 to control the call. Works with (42).

When the controller 420 receives a call start request from the private exchange 42 through the communication unit 410 to the internal telephone number, the controller 420 grasps a state of a channel corresponding to the internal telephone number. If the state of the identified channel is inactivated, the database 400 is searched to request a call connection to the private exchange 42 so that the call is connected to the mobile telephone number linked with the internal telephone number. On the contrary, if the state of the identified channel is activated, the call is requested to the private exchange 42 so that the call is connected to the internal telephone number.

In addition, the controller 420 manages the function of the manager 44 to store, delete, or modify the value of the internal telephone number versus the mobile telephone number, and manages whether to provide one number service to a specific telephone number.

5 is a flowchart illustrating a one number service method performed in a one number service application server according to an embodiment of the present invention.

Referring to FIG. 5, when the one number service application server receives a call initiation request notification message from a private exchange (501), the recipient number is extracted from the received message (502), and it is checked whether the called party subscribes to the one number service. (503). In this case, the called party number is assumed to be an internal telephone number.

As a result of the check, if the state is subscribed, the one-number service application server inquires the state of the channel corresponding to the called number to the private exchange (504), and if not, sends a request message to the private exchange to connect the call to the original called number. Transmit 508.

If the channel status query 504 results in the "inactive" state, the one-number service application server acquires a mobile phone number interoperating with the company phone number (506) and connects the call to the obtained mobile phone number. The request message is sent to the private exchange (507). In contrast, if the channel state query 504 result is "active", a request message is sent to the private exchange to connect the call to the original called party (508).

6 is a reference diagram illustrating a control message transmitted between a private exchange and a one number service application server according to an embodiment of the present invention.

Referring to FIG. 6, the call initiation notification message 601 is a message informing that the private exchange has a start request for a call corresponding to a specific number, and is transmitted from the private exchange to the one number service application server. The incommingChannel parameter of the call initiation notification message 601 is the channel number of the incoming call, the callingNumber parameter is the calling party number, the calledNumber parameter is the called party number, and the outgoingCannel parameter is the channel number of the outgoing call. Will be listed respectively.

The channel status query message 602 is a message for retrieving the status of a specific channel and is sent from the one number service application server to the private exchange. The channel parameter contains the channel number.

The call connection request message 603 is a message requesting a connection between an incoming call and an incoming call. The call connection request message 603 is transmitted from the one number service application server to the private exchange. The first message is used when the channel of an incoming call is set, and the second message is used when the channel of an incoming call is determined at the private exchange by the called party. When a request is made to connect a call to a mobile terminal, a second message is used. The parameters are as described in call initiation notification message 601.

The embodiments of the present invention have been described above. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is defined by the appended claims rather than by the foregoing description, and all differences within the scope of equivalents thereof should be construed as being included in the present invention.

Claims (10)

A one-number service application server for controlling call connection between terminals through an external communication network using a private exchange in a corporate communication environment,
A database for interlocking the internal telephone number and the mobile telephone number;
A communication unit receiving a call initiation notification message from the private exchange and transmitting a call connection request message to the private exchange; And
Check whether the called number extracted from the call initiation message received through the communication unit is subscribed to the one number service, and if the called number is subscribed to the one number service, the channel corresponding to the called number to the private exchange through the communication unit. Inquire the status, if the called number is an internal telephone number, if the status of the channel corresponding to the internal telephone number is inactive, search the database to obtain the mobile telephone number associated with the internal telephone number and obtain the mobile telephone number through the obtained mobile telephone number. A control unit for transmitting a call connection request message to the private exchange through the communication unit;
One number service application server comprising a. The apparatus of claim 1,
If the communication unit receives a call initiation notification message from the private exchange, and extracts the called number from the received call initiation notification message,
If the extracted called number is an internal telephone number, the channel state query result is received by inquiring the state of the channel corresponding to the called number to the private exchange through the communication unit.
If the channel state query result is inactive, the mobile phone number associated with the internal telephone number is obtained from the database, and a call connection request message through the obtained mobile telephone number is transmitted to the private exchange through the communication unit.
And transmitting the call connection request message through the original called number to the private exchange through the communication unit if the channel state query result is activated. The apparatus of claim 1,
One number service application server according to the result of the check whether or not subscribed to the one number service, if the state is not subscribed to the one number service, the call connection request message through the original destination number is transmitted to the private exchange through the communication unit. . The method of claim 1,
Wherein the call initiation notification message comprises at least one of a channel number of an incoming call, a calling party number, a called party number, and a channel number of an outgoing call. The method of claim 1,
The call connection request message is a message requesting a connection between an incoming call and an outgoing call.
If the channel of outgoing call is defined, include channel number, caller's phone number and called party's number of incoming call,
And the channel number of the incoming call, the calling party's telephone number, the called party's telephone number, and the channel number of the outgoing call, when the channel of the outgoing call is to be determined at the private exchange by the called number. A method for providing a one number service of a one number service application server for controlling a call connection between terminals through an external communication network using a private exchange in a corporate communication environment,
Storing the interworking phone number and the mobile phone number in association; And
When receiving the call initiation notification message through the internal telephone number from the private exchange, it is checked whether the telephone number extracted from the received call initiation notification message is subscribed to the one number service, and if the state is subscribed to the one number service. Query the state of the channel corresponding to the internal telephone number to the private exchange, and if the state of the channel corresponding to the internal telephone number is inactive, the private exchange connects the call between terminals to the mobile telephone number linked with the internal telephone number, Sending a call connection request message to the private exchange to connect a call to an internal telephone number if the state of the channel is active;
One number service providing method comprising a. 7. The method of claim 6, wherein sending the call connection request message to the private exchange comprises:
And, if not in the subscribed state, sending a call connection request message through the original called number to the private exchange according to the result of the check. In the enterprise communication environment in connection with the one number service application server in the private number exchange providing method of the number switch between the terminals through an external communication network,
Transmitting a call initiation notification message to the one number service application server according to a call initiation request through an internal telephone number of a calling terminal;
Set the status of the channel corresponding to the internal telephone number to the default status of inactive, and when receiving a register message containing the expiration time from the mobile terminal, process registration and change the channel status to active according to the SIP protocol standard procedure. Setting the validity time to an expiration time included in the register message;
Receiving a message for querying a status of a channel corresponding to an internal telephone number from the one number service server and providing a channel status query result; And
If the channel status query result is deactivated, the call connection request message through the mobile phone number associated with the internal telephone number is transmitted to the internal network interworking communication network connected with the calling terminal. Transmitting a call connection request message to the internal network interworking communication network;
One number service providing method comprising a. delete The method of claim 8, wherein providing the channel state query result comprises:
When the channel status query message is received from the one number service application server within the valid time, the channel status query result indicating activation is provided, and when the valid time elapses, the channel status is changed back to inactive and when the next register message is received. Not changing the deactivation state until;
One number service providing method comprising a.

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