KR20110082350A - Method for call forwarding - Google Patents

Abstract

PURPOSE: A method for call forwarding and capable of preventing error due to call forwarding is provided to supply call forwarding information and communication terminal service state information. CONSTITUTION: A call forwarding service server(70) receives a call forwarding service request signal from a call forwarding setting user. The call forwarding service server collects call forwarding information of a call forwarding service request number. The call forwarding service server determines whether it is possible to be a call forwarding service.

Description

Call forwarding method {Method for call forwarding}

The present invention relates to a mobile communication service, and more particularly, to a call forwarding method.

Mobile communication terminals are becoming an essential means of communication in modern life. A user may accidentally leave the mobile communication terminal in a place such as a home or an office, or may turn off the power due to insufficient battery of the mobile communication terminal. In this case, it is impossible to receive a call or data using the communication terminal. If other people call the person who does not have a mobile communication terminal and the call is not connected, the caller continues to try to connect the call until the user hears a prompt message. In addition, when the call is not connected, the user who makes the call makes a call again after a while and attempts to connect the call, thereby increasing communication traffic. In order to solve these problems, an incoming telephone number change service has been disclosed.

Incoming phone number change service is registered in the call forwarding service server to register the telephone number of the landline phone or mobile communication terminal that can make a call when the user subscribed to the incoming phone number change service does not have a mobile communication terminal, the call forwarding service The server refers to a service that connects a call to a registered call forwarding phone number to a phone number that is no longer possessed. Services targeted for call forwarding services include wired and wireless communication services such as voice call, short message, multimedia message, instant messenger, and voice mail.

1 is a configuration diagram schematically showing the principle of the incoming telephone number change. The terminal B 120 is a terminal registered in the incoming telephone number change service, and is a terminal which is not held by the user. A user who is unable to possess terminal B 120 may call the terminal C 130 or any other communication terminal with the telephone number of the terminal C 130 through the network communication network 140 and the called telephone number for the terminal B 120. Register with Therefore, when a call attempt is generated from the terminal A 110 to the terminal B 120, the network communication network 140 attempts to call the terminal C 130 without making a call attempt to the terminal B 120. Here, the network communication network 140 is a concept including a mobile communication network and a public switched telephone network including a wireless base station and a telephone switching center.

On the other hand, the incoming telephone number change service is generally provided in two ways. One is a conditional incoming telephone number change service. When a call attempt from terminal A 110 to terminal B 120 occurs, a call from terminal B 120 rings for a certain period of time, and then a response from terminal B 120 is answered. If not, the call is attempted by the terminal C (130) registered as the incoming phone number.

Of course, this case will be possible when the power of the terminal B (120) is on. The other is an unconditional incoming phone number change service. When a call attempt from the terminal A 110 to the terminal B 120 occurs, a call attempt is made to the terminal C 130 registered as the called phone number. Of course, an unconditional incoming phone number change service is mainly used due to the nature of the incoming phone number change service.

 When the call forwarding service is set up according to the existing call forwarding service, the call forwarding service server checks only the validity of the subscription / authorization of the call forwarding subscriber and the subscription validity of the forwarding phone number to which the incoming call is forwarded. Therefore, the call forwarding service server does not check the actual incoming call number and the service availability state of the last call forwarding communication terminal when the call forwarding setting is set by the user, and the communication terminal having the actual forwarding number only in the process of call forwarding. Since the service state is recognized, the following problem may occur, causing inconvenience to the user.

First, when the forwarding phone number is re-directed, the user recognizes that the incoming call is forwarded to the forwarding number set by the user. Therefore, there is a case where the actual call forwarding number may not be recognized. For example, assume that a user of terminal A who does not know when terminal B is forwarded to terminal C wants to transfer to terminal B. At this time, the user of the terminal A does not recognize that the terminal B has already transferred the call to another communication terminal. Therefore, the user of terminal A recognizes that the call is transferred to the terminal B telephone number. As such, when re-routing occurs, it is necessary to inform the end call forwarding phone number information to the user who attempts to set up call forwarding.

Second, when the mobile communication terminal of the call forwarding phone number does not receive the communication service due to low battery or power off, call forwarding cannot be performed, but a user who tries to set up call forwarding does not recognize this.

An object of the present invention is to provide a call forwarding method that can prevent errors due to call forwarding.

Another object of the present invention is to provide a call forwarding method that can prevent an error that may occur when setting a call forwarding service of a communication service.

Still another object of the present invention is to provide a call forwarding method that can indicate communication state information of a call forwarding phone number.

It is still another object of the present invention to provide a call forwarding method that can indicate a substantial serviceable state of a call forwarding phone number.

A call forwarding method according to the present invention for achieving the above objects comprises the steps of: a call forwarding service server receiving a call forwarding service request signal from a call forwarding setter; Collecting, by the call forwarding service server, information on whether the call forwarding service request number is re-directed; If the call forwarding service request number is a call forwarding number, returning the call forwarding service server to a step for determining whether call forwarding service is available using the call forwarding number, and performing a corresponding operation; And when the call forwarding service request number is not the re-directed number, the forwarding service server according to the service setting, transmitting a message including the last forwarded call forwarding number information to the forwarding setter. It is done.

Another feature of the call forwarding method according to the present invention further includes the step of transmitting a signal for requesting information on whether the call forwarding service server retransfers to another communication network when the call forwarding service request number is another communication network number. will be.

Another feature of the call forwarding method according to the present invention is that the call forwarding service server provides the call forwarding setter with information according to any one of a method of announcement, short message (SMS), and the display of the call number.

Another feature of the call forwarding method according to the present invention is that the call forwarding service server provides the communication terminal service state information of the call forwarding number to the call forwarding setter.

Another feature of the call forwarding method according to the present invention is that the call forwarding service server has power-off, power roaming, international roaming, do-not-disturb, incoming call screening, and call forwarding. It is to provide communication terminal service state information including the state of any one of the cycling.

Another feature of the call forwarding method according to the present invention is that the call forwarding service request signal is provided to the call forwarding service server through any one of a mobile communication network, a public switched telephone network (PSTN), and the Internet.

The call forwarding method according to the present invention has the following effects.

First, the call forwarding setter can be provided with information on the actual call forwarding number.

Second, it is possible to provide the communication terminal service status information of the call forwarding number to the call forwarding setter.

1 is a schematic diagram illustrating a general call forwarding service.
2 is a system configuration diagram for the implementation of the call forwarding method according to the present invention.
3 is a flowchart showing the progress of the call forwarding method according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted for simplicity of explanation, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise. In addition, the terms “… unit”, “… unit”, “module”, “block”, etc. described in the specification mean a unit that processes at least one function or operation, which is hardware or software or a combination of hardware and software. It can be implemented as.

2 is a system configuration diagram for the implementation of the call forwarding method according to the present invention. As shown, the application of the call forwarding service may be implemented by various methods. The call forwarding request signal using the mobile communication terminal 10 is transmitted to the call forwarding service server 70 via the base station 40. The call forwarding service setting signal by the general home telephone 20 is transmitted to the call forwarding service server 70 through the general public telephone network (PSTN) 50. The internet phone 30 is connected to the call forwarding service server 70 through the Internet network 60. The call forwarding service server 70 is connected to a database storing call forwarding service usage information. In addition, a home location register (HLR) 82 and a visitor location register (VLR) 81 are connected to the call forwarding service server 70. The call forwarding service server 70 may transmit a communication status information request signal to the third party communication network server 90 if necessary. A third party communication network server 90 is connected to a database 91 in which call forwarding information is stored.

The call forwarding service server 70 can not only receive a setting signal from each communication terminal 10, 20, 30, but also transmit a call signal by call forwarding and a signal for processing a communication service using the same communication path. Can be.

3 is a flowchart showing the progress of the call forwarding method according to the present invention. The call forwarding setter transmits the call forwarding setting signal to the call forwarding service server 70 by using any one of the communication terminal devices of the mobile communication terminal 10, the home general telephone 20, or the Internet phone 30.

The call forwarding service server 70 uses the database 71 to confirm that the user of the mobile communication terminal having the call forwarding telephone number is the call forwarding service subscriber.

If the user is not a service subscriber, the call forwarding service server 70 sends a notification signal indicating service unavailable to the user's communication terminal device, which may be displayed in the form of a voice message or a text message. On the other hand, in the case of a normal service subscriber, the call forwarding service server 70 checks whether the call forwarding phone number is a phone number of another mobile communication company.

 On the other hand, if the phone number of another mobile communication company, the call forwarding service server 70 transmits a signal requesting the status information of the call forwarding phone number to the management server of the other mobile communication company. The management server 90 of the other mobile carrier checks whether the service is subscribed through the database 91, checks the communication status information of the current forwarding phone number, and transfers the status information response signal based on the result. Transfer to server 70.

If the forwarding phone number uses its own communication service, check whether the incoming call is re-sent. That is, it is to check whether the call forwarding phone number requested by the user is already forwarded. For example, when the user requests to forward a call signal that is forwarded to the "A" number to the "B" number, the call forwarding service server 70 with confirmation of the current communication status of the "B" number , Checks whether the "B" number is set to call forwarding to another number.

As such, there may be a variety of "re-sent" conversions. For example, there is a case where the user forgets to cancel after setting the previous call to the "B" telephone number to switch to the "C" number. Due to frequent overseas travel, the user may not cancel the call setup after performing the international roaming service.

As described above, in the case of the call forwarding, the call forwarding operation is fed back to the step where the user requests call forwarding setting. That is, the call forwarding operation returns to the service subscription status and status information retrieval process for the phone number for which the user was last forwarded by re-incoming, rather than the service subscription status and status information retrieval for the phone number that the user requested for the first call transfer. do. For example, the call forwarding service is to perform the call forwarding setup process for the target phone number is set to the call forwarding in the "B" terminal, rather than the telephone number "B" that the user requested the call forwarding.

When the state information of the last forwarded phone number is extracted, the call forwarding service server transmits a response signal including the final call forwarding phone number and the status information of the communication terminal to the setup request user. The response signal may be provided in the form of a voice message or a text message. The communication state information may include any one state information of power-off, international roaming, do-not-disturb (DND), incoming call screening, and call forwarding cycling.

Therefore, the call forwarding user can know the correct information about the call forwarding number finally set at the call forwarding setting time.

10: mobile communication terminal 20: home telephone
30: Internet phone 60: Internet network
70: call forwarding service server 81: VLR
82: HLR 90: third party communication server
71, 91: DB

Claims (6)

Receiving, by the call forwarding service server, a call forwarding service request signal from a call forwarding setter;
Collecting, by the call forwarding service server, information on whether the call forwarding service request number is re-directed;
If the call forwarding service request number is a call forwarding number, returning the call forwarding service server to a step for determining whether call forwarding service is available using the call forwarding number, and performing a corresponding operation; And
And if the call forwarding service request number is not a re-forwarding number, the forwarding service server transmits a message including the last forwarded forwarding number information to the forwarding setter according to the service setting. Call forwarding method. The call forwarding service server of claim 1, further comprising: when the call forwarding service request number is another communication network number, the call forwarding service server transmitting a signal for requesting information on whether the call forwarding service is redirected to another communication network. How to switch. The call forwarding method of claim 1, wherein the information that the call forwarding service request number provides to the call forwarding setter is one of a method of announcement, short message (SMS), and call forwarding number display. 2. The call forwarding method of claim 1, wherein the information that the call forwarding service request number provides to the call forwarding setter includes communication terminal service state information of the call forwarding number. 5. The method of claim 4, wherein the communication terminal service state information is any one of power-off, international roaming, do-not-disturb, incoming call screening, and call forwarding cycling. Call forwarding method comprising the state. The call forwarding method of claim 1, wherein the call forwarding service request signal is provided to a forwarding service server through any one of a mobile communication network, a public switched telephone network (PSTN), and the Internet.

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