KR101174139B1 - Method for providing auto-switching call management by optimizing the cost and call connection reliability in smart-terminals, and computer-readable recording medium for storing auto-switching call management program for the same - Google Patents

Abstract

PURPOSE: An automatic call connection switching management method and computer readable recording medium therefor are provided to promote user convenience by syntagmatically managing an address application and a free call application. CONSTITUTION: When a call connection is not completed, a call connection management application converts access numbers using created access number lists(S26,S27). When the call connection using the converted access number is not completed within set threshold time, the call connection management application processes a call connection attempt as failure. The call connection management application connects to a target terminal using an infrastructure communication network(S28).

Description

Automatic switching call connection management method for optimizing call charge and call stability in a smart terminal, and a computer-readable recording medium recording an automatic switching call connection management program for this purpose {Method for providing auto-switching call management by optimizing the cost and call connection reliability in smart-terminals, and computer-readable recording medium for storing auto-switching call management program for the same}

The present invention relates to an automatic switching call connection management technology that is operated in a manner that optimizes in consideration of both call charge and call stability to the user in a smart terminal. More specifically, the present invention provides a call connection and a call connection through the main communication network so that the call cost is optimized in consideration of the user's plan conditions, the current usage conditions, and the communication environment in which the smart terminal is placed in the application (app) of the smart terminal. It provides automatic selective call management between call transfers through the operator, and if the call connection is unstable while attempting such a selective call connection, it immediately changes the call transfer policy to ensure the stability of the call connection. It is about.

The present invention discloses a methodology for minimizing call cost of a user through a call connection management program (application) installed in a smart terminal. In addition, the present invention, if it is determined that the lowest cost call connection is unstable while attempting such a method, by immediately changing the call connection policy, by connecting the call through a backbone network where the call connection is most certain even though the cost is high. A methodology is disclosed to ensure that the least costly side effects are not manifested.

The information referred to in the call connection management program of the present invention includes all or part of the following five items.

1) Smart terminal performance.

2) Call environment available to users through the carrier.

3) Call rate by call type that is paid or not included in the basic rate when the user exceeds the basic rate of the call type and rate plan that the user subscribes to the carrier (i.e., 'term communication product condition').

5) The call charge for each currency type used by the user to pay a monthly fee (basic fee) to the telecommunications carrier and the call fee for each currency type that is paid when the user exceeds the monthly fee or is not included in the monthly rate plan (ie, 'Special telecommunication product condition' ).

6) The probability of establishing a call connection lowering the certainty of the call connection due to the side effects of the call charge minimization.

The present invention is to minimize the call cost of the user by comprehensively considering the various factors as described above.

In general, the rate system of smart terminals (particularly smart phones) is provided by differentially providing basic services according to the rate system. For example, if you look at the plan provided by KT, a Korean mobile operator, the Light plan (basic fee 45,000 won) will provide 200 minutes of voice calls, 300 messages and 500 MB of data, and the medium plan (basic fee 65,000 won) It provides 400 minutes of voice calls, 400 messages, and unlimited data. The premium plan (basic fee of 95,000 won) provides 800 minutes of voice calls, 1000 messages, and unlimited data. If you exceed the built-in capacity, you will be charged a relatively expensive fee, so users choose their own plan to fit their usage.

On the other hand, in recent years, many people make international calls using smart terminals. At this time, some people make international calls using the subscriber network of the smart terminal (ie, main communication network), but since they are very expensive, most of them are relatively inexpensive international calls through separate call connection providers (eg, separate carriers). Use Conventionally, calling cards have been used, but in recent years, international phone applications (eg, EggTok) are often installed on smart terminals. These telephony service providers provide call connection services at a much lower cost for domestic calls as well as international calls, and are gradually expanding their bases.

As such, users of smart terminals select a plan according to their call type and select an international call type. However, when choosing a plan, it is only a rough estimate of how much call you will make in the future, which is often not the case. In particular, the type of call is not always constant. There are times when you will be charged a lot.

1 illustrates various call connection environments. In addition to basic telecommunication network services such as SKT, KT and LG-U + in Korea, separate call service providers provide domestic / international call connection services at a much lower cost. The user can select various types of currency, and since these methods have various applicable conditions and charging conditions, it is virtually impossible for the general user to remember them and apply them optimally every time they attempt a call. As a result, most users make free calls within the toll-free fraction provided by the plan, and then pay the high cost of communication.

Accordingly, the applicant of the present invention is optimized for the user's call plan, the current use state, and the specific situation of making the current call, and the technology that causes the call rate to be minimized occurs. Presented in 2012-0018205.

However, a call connection method other than the main communication network (hereinafter, referred to as a "free call application") has a disadvantage in that the call connection price is lower than that of the main communication network, but the reliability of the call connection is relatively low.

The lack of connection certainty of these toll-free apps may be due to poor connection quality of the data network or high load on the service server. Since network status changes from time to time, call failures caused by this factor occur intermittently and are difficult to predict. In addition, these free call applications provide free calls when both the caller and the caller have installed the corresponding application, and the call counterpart (the caller) has deleted or installed the free call application in the past or the other party upgrades the software. Otherwise, even if the versions are different, the telephone connection will not work properly.

Even when the call is not properly connected, the caller (caller) often hears dialing tones as if they were continuously trying to call. The user waits for a long time for a connection, and nevertheless, the call is not connected, and the overall reliability of the free call application is low. On the other hand, even if the system detects a call connection failure early and gives the user a FAILURE NOTICE, a perfect voice service is provided when the 3G, 4G, LTE, etc. networks provided by the backbone carrier are low in traffic. Considering the fact that the WIFI network, which is increasing in popularity, provides a perfect voice service, it is not able to prevent the need for use of a free call application. Therefore, there is an urgent need for a technology capable of maximally suppressing complaints that may occur on the user side due to instability of the call connection while continuously utilizing these free calling applications.

[Related Technical Literature]

1. Patent application No. 10-2000-0031461, title of the invention "Service connecting the cheapest telecommunication operators according to the rate system"

2. Patent application No. 10-2002-0011389, title of the invention "lowest rate telephone connection method"

3. Patent Application No. 10-2004-0029208, title of the invention "Method of performing calls with optimal rates"

4. Patent application No. 10-2010-0111884, title of the invention "Advertisers select and classify the desired target ads automatically received by the mobile phone user using a smartphone to use the phone for free via the Internet phone Letting system "

An object of the present invention is to make a call connection and communication service provider through the main communication network so that the user's call cost is optimized in consideration of the user's plan conditions, the current usage status, and the communication environment in which the smart device is placed through the application installed in the smart terminal. It is a technology that optimizes the communication cost of users by automatically managing the selective call connection between call connection through the connection, while minimizing the dissatisfaction that can occur at the user side due to the failure of the lowest cost call connection for various reasons. To provide.

According to an aspect of the present invention, there is provided an automatic switching call connection management method for optimizing call charge and call stability in a smart terminal, comprising: a first step of receiving a term communication product condition of a user; A second step of the basic dialer module generating a CallBroadcast event in response to a user inputting an object number through the basic dialer module of the smart terminal; A third step of catching a call broadcast event while the call connection management module of the smart terminal monitors an event occurrence; A fourth step of determining, by the call connection management module, the call usage of the smart terminal; A fifth step of comparing, by the call connection management module, the target number extracted from the call broadcast event to the conditional communication product condition and the call usage to determine whether a free voice call is possible; A sixth step of determining whether or not to make an international call if a free voice call is possible as a result of the fifth step; A seventh step of executing a call connection with the destination terminal according to the destination number through the main communication network when the domestic phone is determined as the sixth step; An eighth step of setting a city rate access number in case of an international call as a result of the sixth step; A ninth step of setting a toll-free access number if the free voice call is impossible as a result of the fifth step; A tenth step of accessing an external call connection server through the set access number and executing a call connection with the destination terminal according to the destination number; If the call connection does not succeed within a predetermined threshold time, the call connection failure processing, and automatically switching the call connection setting to the main communication network to perform the call connection to the target terminal again; an eleventh step.

In the automatic switching call connection management method according to the present invention, in the case where the free voice call is not possible as a result of the determination in the fifth step, the access number list is generated in the order of the lowest price and the lowest value is set as the toll-free access number. The eleventh step may include: if the call connection is not successful within the threshold time, failing the call connection, automatically switching to a next access number in the access number list, and re-connecting the call with the target terminal; If the reconnection of the call does not succeed within the preset final threshold time, failing the call connection through the access number list and automatically switching the call connection setting to the main communication network to redo the call connection to the target terminal; Can be configured.

Automatic switching call connection management method according to the present invention comprises the steps of: identifying a short-range wireless communication environment available, including short-range wireless communication of the smart terminal; Determining whether a free call connection is possible in a short range wireless communication environment; As a result, when the free call connection is possible, the step of executing a call connection with the target terminal through the free call connection in the short-range wireless communication environment; may be configured to further include.

The fifth step in the automatic switching call connection management method according to the present invention comprises the steps of: comparing the free voice call time of the call product conditions and the identified call usage; Determining whether the free voice call time remains above a preset threshold time compared to the call usage; and the sixth step is to determine whether to attempt an international call by recognizing the first three digits of the destination number. It is preferable.

In the automatic switching call connection management method according to the present invention, the tenth step may include: A1 step of determining whether or not a current communication environment of the smart terminal is available for call connection through data communication; In a communication environment in which call connection is not possible through data communication as a result of the determination of step A1, dialing the access number set above to access the call connection server to perform a call connection with the target terminal; As a result of the determination in step A1, in a communication environment in which a call connection is possible through data communication, A3 provides call-related information to the call connection server through data communication and executes a call connection with the target terminal under the control of the call connection server. It is configured to include, wherein A3 step, A31 step of providing a destination number to the external IP connection server through the data communication, and determines the line code through this; If the circuit code is determined to be Call_Type A, dialing the set access number to access the call connection server to perform a call connection with the target terminal; Step A33, if the circuit code is determined to be Call_Type B, providing an identifier of the smart terminal through data communication, and performing a call connection with the target terminal by performing an automatic call reception when a callback call connection is provided from the call connection server; It may be configured to include.

In the automatic switching call connection management method according to the invention, the fourth step, the call connection management module to determine the call usage by checking the call log of the smart terminal; Determining, by the call connection management module, the call usage of the smart terminal by automatically connecting an external server company; It may be configured to perform one or more of the.

On the other hand, the computer-readable recording medium according to the present invention records the automatic switching call connection management program for performing the automatic switching call connection management method for optimizing the call charge and call stability in the smart terminal according to any one of the above. .

According to the present invention, the user of the smart terminal can make a call at the lowest price by using the application of the smart terminal without any effort. That is, the call fee or operator's cost is automatically calculated according to the communication plan for each means of communication, the wireless LAN and other communication environment available on the smart terminal, the communication environment available at the time of call connection, and the consumer is automatically As a result, operators can maximize their operating profits.

In addition, according to the present invention, while maintaining the user's cost as low as the lowest price, the frequency of call connection failure is significantly lowered, which greatly increases the user's satisfaction with the free call application.

In addition, according to the present invention, since the user can utilize the free call app while utilizing the basic dialer and contact app provided by the smart terminal as it is, the user does not need to learn how to use the contact information in the prior art and the basic contact app and free call app. There is an advantage that the convenience of the user is greatly improved by the inconvenience that had to be managed in duplicate.

1 is a diagram illustrating various call connection environments.
2 is a diagram illustrating a configuration of a smart terminal in which an automatic switching call connection management method is implemented according to optimization of call charge / call connection stability in a smart terminal according to the present invention.
FIG. 3 is a diagram illustrating an automatic call connection system in which an automatic switching call connection management method according to optimization of call charge / call connection stability is implemented in a smart terminal according to the present invention. FIG.
4 is a view for explaining the access number used by the first connection means or the second connection means of the automatic switching call connection management method according to the optimization of call rate / call connection stability in the smart terminal according to the present invention.
5 is a flowchart illustrating an automatic switching call connection management method according to the optimization of call charge / call connection stability in a smart terminal according to the present invention.
6 is a view showing the flow of the access number connection method using dialing in the present invention.
7 is a view showing the flow of the access number connection method using data communication in the present invention.
8 is a view showing the flow of the callback connection method using the data communication in the present invention.
9 is a diagram illustrating an example of a smart terminal screen in the connection method of FIGS. 6 to 8.

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

2 is a diagram illustrating an internal configuration of a smart terminal 10 in which an automatic switching call connection management method according to optimization of call charge / call connection stability according to the present invention is implemented. The smart terminal 10 should be understood as a concept including not only a smart phone (eg, iPhone, Galaxy S) but also a smart pad (eg, iPad, Galaxy Tab), smart TV, smart set-top box, etc. ), A control unit 12, a memory unit 13, a storage unit 18, and a transceiver unit 19.

The input / output unit 11 includes an input unit and an output unit, and may include a touch module, a touch pad, a keypad, a CRT, an LCD, an LED, a PDP, and the like.

The control unit 12 controls the overall configuration of the smart terminal 10, in particular, the call connection management application 14, the dialing application 15, the VoIP application 16, the calling application (installed in the memory unit 13) 17) Minimize call charges by making the best use of free voice call time and free data usage provided during billing period according to user's plan, and remove instability of call connection by pursuing minimum fee Do this.

The transceiver 19 performs voice signal transmission or IP data transmission and reception with an external system in response to a control operation of the controller 12.

Meanwhile, FIG. 3 is a diagram illustrating an automatic call connection system in which an automatic switching call connection management method according to optimization of call fee / call connection stability according to the present invention is implemented. The automatic call connection system includes a main communication network 20, a call connection server 30, and an IP connection server 40 to connect a call between the smart terminal 10 and the target terminal 50. The call connection between the smart terminal 10 and the target terminal 50 may be made through the main communication network 20, or may be made through a call connection server 30 operated by a call connection provider (for example, a separate telecommunication company). In addition, an IP connection server 40 is provided to be used for information exchange between the smart terminal 10 and the call connection server 30 or used as a control path therebetween.

Referring back to FIG. 2, the call connection management application 14 is a target terminal 50 through co-operation with the dialing application 15, the VoIP application 16, and the calling application 17. Perform a call connection to. Hereinafter, the present invention focuses on the functions of the call connection means 14a, the first connection means 14b, the second connection means 14c, and the automatic switching means 14d constituting the call connection management application 14. Look specifically.

The call connection management application 14 performs domestic and international call connection to the target terminal 50 through the main communication network 20 which is the basic dialing route of the smart terminal 10 through the dialing application 15. In addition, the call connection management application 14 performs a telephone connection to the target terminal 50 through the data communication network (Wireless LAN, 3G, 4G) to which the smart terminal 10 belongs via the VoIP application 16. In addition, the call connection management application 14 performs a domestic call and an international call service through a separate call connection operator using an access number through the calling app 17.

That is, the call connection management application 14 uses the free voice call time and the free data usage information provided during the billing period of the plan selected by the user of the smart terminal 10 to minimize the call charge by using the dialing app 15 and VoIP. The control sequences for the app 16 and the calling app 17 are automatically combined to provide the user with an optimal automated call management process.

Looking at an example, the call connection means 14a is provided with a term communication product condition according to the user's plan and then set in the application, the basic dialer module corresponding to the selection of the basic dialer icon implemented in the input / output unit 11 of the user Is implemented in the input / output unit 11. On the other hand, the call product conditions include billing period information, free voice call time information, free data usage information, can be provided from the user or from the main carrier. According to the embodiment, it may be configured to further receive a special telecommunications call product condition regarding the special telecommunications call product condition as well as the special telecommunications call product condition and use it for the call connection.

Thereafter, the call connection means 14a receives the object number corresponding to the object terminal 50 from the user through the basic dialer provided by the smart terminal 10, and then detects the press of the call button, for example, the basic dialer module. When a CallBroadcast event according to the operating system (OS) occurs, the event is monitored and the call broadcast event is caught. Since the object number is included as a parameter (parameter or argument) in the message of the call broadcast event, the object number is obtained from the message.

That is, the present invention does not employ a unique dialing method that was provided separately for each free call application in the prior art, and is integrated into a basic dialer module that is basically provided when the smart terminal 10 is released to provide a user-friendly UI. It is one feature to use. To this end, the object number is input through the basic dialer of the smart terminal 10 and configured to catch (intercept) an intermediate call broadcast event that occurs when a call is made.

As such, as integrated with the basic dialer, the linkage operation between the basic dialer and the basic contact module provided by the smart terminal 10 may be continuously utilized. Accordingly, the user can continue to use the basic dialing UI screen of the smart terminal 10 that is already used, and has the advantage of being able to integrate and manage contact management. In the prior art, it was difficult to manage by providing a dialing module and a contact module independently for each free call application.

On the other hand, if the call connection means 14a dials the destination number through the basic dialer implemented in the input / output unit 11 (for example, 010-4038-96XY), the call plan means 14a corresponds to the subscription plan for the main communication network 20. Check to see if there is any free call time remaining for the billing period (ie, that month). In this case, in order to confirm whether free talk time remains, the call connection means 14a uses the call product conditions for the user described above. These currency product conditions include billing period information (e.g., from 10th to 9th of next month), free voice call time information according to the plan, and free data usage information (e.g., 500MB). Currency product conditions may be provided by the user or by the main carrier.

In addition, the call connection means 14a additionally grasps the user's call usage (phonic call usage, data usage) in real time, preferably in the billing period, and compares the currency product conditions and the call usage to enable the current free call. It can be determined whether or not the state. The call connection management application 14 controls the dialing application 15, the VoIP application 16, and the calling application 17 according to the determination result.

In addition, the call connection means 14a generates an access number list in case the lowest cost call connection path in operation currently fails. That is, a toll-free access number (e.g., 080-870-0700) mainly used by the smart terminal 10 user is set as an access number to be used later, and an access number list for setting call connection paths in the order of low price. It generates and stores in the storage unit 18.

On the other hand, the first connection means 14b controls the dialing application 15 to connect the call connection server 30 using the access number, thereby making a domestic or international call connection to the target terminal 50. To this end, the call connection server 30 is provided with softswitch or gateway equipment to provide a dialing connection.

The second connection means 14c connects to the call connection server 30 by using IP data communication and thereby establishes a call connection. That is, the second connection means 14c performs data communication with the call connection server 30 through the IP connection server 40, thereby quickly achieving information exchange for call connection. The call connection provided by the second connection means 14c may use an access number or another method, for example, a callback connection method.

In comparison, since the second connecting means 14c utilizes data communication, there is an advantage that the call connection can be achieved very quickly compared to the first connecting means 14b using the dialing (DTMF), while the data network has a voice. Since the connection stability is lower than that of the network, the second connection means 14c has a disadvantage in that a situation in which the call connection is unstable or at all impossible occurs more often. Therefore, in the present invention, the priority of the second connecting means 14c is set higher than that of the first connecting means 14b, except that the first connecting means when the call connection through the second connecting means 14c is impossible or fails. Attempting to make a call through 14b is presented as a preferred embodiment.

When the automatic switching means 14d does not succeed in the call connection attempt on the call connection path proposed as the lowest cost in the current state according to the judgment at the call connection means 14a (when it is determined as a failure) It also performs the operation of automatically switching to another call connection path, the call cost is increased but the stability of the call connection is good.

In the first embodiment of such an operation, if the call connection attempt through the lowest cost call connection path is unsuccessful, the call connection is failed, and the call connection setting is automatically switched to the main communication network having the highest call connection stability. Re-establish the call connection to the target terminal. In the second embodiment, the connection attempt may be sequentially performed within a threshold time by changing to another access number included in the access number list. This method can suppress the increase of the call connection cost to a minimum in the aspect of attempting to make a call while gradually increasing the call cost, but it takes a relatively long time until the call connection is successful. . Accordingly, in the second embodiment, the final threshold time is set so that, if the call connection is unsuccessful within this threshold time, the switch is automatically switched to the main communication network in spite of the access number list and re-established the call connection to the target terminal. can do.

On the other hand, [Figure 4] is connected to the call connection server 30 using the access number in the automatic switching call connection management method according to the optimization of call rates / call connection stability according to the present invention, through which domestic / international calls It is a figure for demonstrating conceptually the process to achieve. First, as shown in (b) of FIG. 4, the access number (080-988-XUXZ) is dialed, and then temporarily waited for a connection with the call connection server 30 ('P'), and a menu button or an addition is added. The function buttons provide appropriate selections. Subsequently, when the object number (010-1XX-XCCX) is input and the '#' symbol and the menu button or the call button are pressed, the call connection server 30 executes a call connection with the target terminal 50. When making a call connection with an access number, this process usually takes a lot of time. Accordingly, in the automatic switching call connection management method according to the optimization of call charge / call connection stability according to the present invention, after inputting only the objective number (010-1XX-XCCX) through the basic dialer as shown in (b) of FIG. When the menu button or the call button is pressed, the call connection server 30 automatically executes a call connection with the target terminal 50.

5 is a flowchart illustrating a connection management method according to call charge optimization in a smart terminal according to the present invention. The call connection management application 14 provides an optimal call connection management process so that the call charge is calculated to the minimum by using the free voice call time and the free data usage according to the user's plan.

In the present invention, the call charge of the user is calculated at the same time and at the same time aims for a seamless connection with respect to the call quality. Therefore, when a call connection request is received from the user, the first priority is to check whether a free call is possible. For example, when an IP PBX can be used, a free telephone call through the IP exchange can be used by accessing the IP exchange through short-range wireless communication (eg, WLAN, Bluetooth) of the smart terminal 10. As such, it is possible to see if this free call is available and achieve free call connection if it is possible. On the other hand, if it is determined that the free or low-cost call connection has failed due to various situations at present, the following procedure is performed to remove the uncertainty of the call connection while minimizing the increase in call charges.

The call connection management application 14 receives a conditional communication call product condition according to the user's plan and sets it in the application (S11). The call product condition includes billing period information, free voice call time information, and free data usage information, and can be obtained from a user or by automatically accessing a server of a main communication company. According to the embodiment, it may be configured to further receive a special telecommunications call product condition regarding the special telecommunications call product condition as well as the special telecommunications call product condition and use it for the call connection.

After the step (S11), the call connection management application 14 implements the basic dialer according to the basic dialer icon selected on the user's input and output unit 11, the target number corresponding to the target terminal 50 from the user It receives an input (S12).

When a call broadcast event occurs from the basic dialer module according to the input of the object number in step S12, the call connection management application 14 monitors the occurrence of the event and catches (intercepts) the call broadcast event. Then, the call connection management application 14 obtains the destination number from the parameter set in association with the call broadcast event (S13).

Subsequently, the call usage (voice / data) of the user is determined in the billing period of the user (S14). The call usage may be accurately accumulated by real-time management in the call connection management application 14 or by automatically accessing a server of a main communication company at regular intervals. Checking the call usage in real time is an important element of the present invention, as a technique for checking the call log of the smart phone (call log) and the amount of usage up to that time by accessing the service server of the service provider of the subscription It is possible to check.

Subsequently, it is determined whether or not the free voice call is currently possible by comparing the currency product condition and the usage amount of the call (S15). In particular, it compares the information of the free voice call time and the current voice call usage of the conditions of the call product, but it may be determined that the free voice call is possible as long as the remaining free voice call exists, but more preferably the free voice call remaining time. It is determined that the free voice call is possible only when the preset threshold is 30 seconds or 1 minute or longer.

If it is determined in step S15 that the free voice call is possible, the next step is to determine whether the call connection currently attempted by the user is an international call (S16). At this time, the determination of whether the call is an international call can be made by examining whether the first three digits of the object number are a national identification number. As a result of the determination in step (S16), if the call is not an international call but a domestic call, processing is possible in the remaining free time of the voice call, so that the call is connected through the main communication network 20 (S17).

As a result of the determination in step S16, in case of an international call, a local rate access number (for example, 1666-0622) that allows international calls to be made at the local rate is set as an access number to be used later (S18).

On the other hand, if the free voice call is not possible as a result of the determination in step S15, a toll-free access number (e.g., 080-870-0700) mainly used by the calling card is set as an access number to be used later (S19). Logically, in step S19, it is reasonable to establish a call connection path with a lower-cost communication service by comparing the conditional communication product condition and the separate communication product condition. However, it is difficult to think that there is only a separate telecommunication call connection, which is more expensive than the charge rate for exceeding the free voice call time in the main telecommunication network. There is no need to compare and make a call through separate communication. On the other hand, in step (S19) after the call connection management application 14 generates a list for setting the call connection path for the communication service in the order of the lowest price and store in the storage unit 18, the smart terminal through data communication If it is impossible to set the call connection path of the lowest price among the call connection paths between the 10 and the target terminal 50, the connection attempt may be sequentially performed within a threshold time.

On the other hand, since the access number for using the service of the call connection service provider (for example, a separate carrier) through the previous step, since the preferred embodiment for executing a call connection through the call connection service provider.

First, it is checked whether the communication environment in which the smart terminal 10 is currently placed is in a state capable of data communication (S20). In this case, it is preferable to determine that the data communication is practically impossible if not only the data communication is completely impossible but also the data communication is physically possible but the communication strength is too weak or the connection state is unstable.

As a result of the determination in step S20, when the communication environment of the smart terminal 10 is not possible for data communication, the previously set access number is dialed by, for example, DTMF (Dual-Tone Multi-Frequency), and the call connection server of the call connection provider 30 ), And the call connection is executed (S21).

If the data communication is possible as a result of the determination in step (S20), it is preferable to check the optimal line code (S21) and to change the call connection method accordingly. In the present invention, the optimal line code is determined according to the difference in the call charge policy. In general, it is the cheapest to connect the terminal and the terminal directly, which is called 'Call_Type A'. However, in some countries, the fee for connecting two mobile communication terminals is set to be very expensive, exceeding twice the fee for connecting a mobile communication terminal and a wired terminal. In such a case, it will be described later with reference to FIG. 8. Likewise, it is cheaper to mediate a wired terminal in the middle than directly connecting two mobile communication terminals, which is called 'Call_Type B'.

Accordingly, to determine the optimal line code between the smart terminal 10 and the target terminal (50) (S23), if the optimal line code is Call_Type A (S23), the smart terminal 10 performs an access number call connection using IP data. This is executed (S24), which will be described with reference to FIG.

On the contrary, when the optimum line code is Call_Type B as a result of the determination in step S23, the smart terminal 10 executes a callback type call connection using IP data (S25). Explain.

When managing the call connection in the call connection management application 14 installed in the smart terminal 10 through the above procedure it is possible to keep the communication cost imposed on the user to the minimum.

Meanwhile, the smart terminal 10 executes an access number call connection using IP data according to Call_Type A in step S24 or the callback using IP data by smart terminal 10 according to Call_Type B in step S25. It is determined whether the call connection is completed within a preset threshold time when executing the call connection of the method (S26).

If the call connection is not completed as a result of the determination in step (S26), the call connection management application 14 uses the access number list generated in (S19), although the call cost is relatively high, but the call connection stability is better to another access number. After the change, a call connection is attempted to the target terminal 50 (S27). Meanwhile, after changing the access number using the access number list to a preset threshold time, the access number list may be repeatedly or sequentially performed within the threshold time.

After the step (S27), if the call connection to the target terminal 50 using the changed access number within the preset threshold time is not completed, the call connection management application 14 fails to handle the call connection attempt through the access number and automatically Switching performs a call connection to the target terminal 50 through the main communication network 20 (S28). Optionally, if the call connection is not successful within the threshold time in step S26, the existing call connection may be processed immediately and automatically switched to perform a call connection to the target terminal 50 through the main communication network 20. .

FIG. 6 is a diagram illustrating a flow of an access number connection method using dialing in the present invention, and FIG. 9A is a diagram illustrating an example of a smart terminal screen.

The smart terminal 10 automatically dials the access number to the call connection server 30 according to the destination number dial of the target terminal 50 using the user's basic dialer, and thereby the smart terminal 10 and the call connection server 30. If the call is connected between the), then the call connection server 30 waits for the smart terminal 10 to provide the object number, that is, the telephone number of the object terminal 50 in a DTMF manner. More specifically, a user inputs an object number with a basic dialer implemented in the smart terminal 10, and a call broadcast event occurs by the operating system OS of the smart terminal 10 according to the input. According to the call broadcast event occurrence, the smart terminal 10 designates the destination number as one parameter and stores or temporarily stores it in the storage unit 18, and then calls the destination number when establishing a call between the call connection servers 30. After extracting through the broadcast catch, it is provided to the call connection server 30 in a DMTF manner.

When the smart terminal 10 provides the destination number to DTMF, the call connection server 30 attempts to connect to the destination number, and as a result, the call is connected between the smart terminal 10 and the destination terminal 50.

This method has the advantage that it can be used in a communication environment where IP data communication is not possible because it uses dialing. On the other hand, the call connection time is very long, about 15 seconds, and the destination number (for example, 010-2790-48XX) that is the call target is displayed on the dialing screen of the smart terminal 10 as shown in (a) of FIG. 9. An access number (eg, 1666-0622) is displayed. In addition, in some smart terminals 10, DTMF tones may be heard by the user.

7 is a diagram illustrating a flow of an access number connection method using data communication executed when the optimal line code is Call_Type A in the present invention, and FIG. 9B is an example of a smart terminal screen. It is a figure which shows.

FIG. 7 illustrates that the call connection process of FIG. 6 is performed as it is, but the object number is stored as one parameter according to the call broadcast event generated in step S13 of FIG. The smart terminal 10 provides the destination number to the call connection server 30 through the IP data network according to a call broadcast event catch occurrence corresponding to a wake-up of the stored data in the unit 18. By doing so, there is a difference in that the process of providing the object number to DTMF is unnecessary as compared to the process of FIG. In order to provide data communication through the IP data network, the IP connection server 40 may intervene between the smart terminal 10 and the call connection server 30, as described in FIG. 3.

Since the time required to provide the destination number to the call connection server 30 through the IP data network is short enough to be negligible compared to inputting with DTMF as shown in FIG. 6, the method of FIG. It has the advantage that the call connection time is very short, about 4-5 seconds. On the other hand, when the smart terminal 10 is placed in a communication environment in which data communication is impossible, it cannot be utilized, as shown in (b) of FIG. 9, the telephone of the smart terminal 10 as in FIG. 6. There is a disadvantage in that an access number (eg, 1666-0622) is displayed on the dialing screen instead of an object number (eg, 010-2790-48XX).

FIG. 8 is a view illustrating a flow of a callback connection method using data communication executed when the optimal line code is Call_Type B in the present invention, and FIG. 9C illustrates an example of a smart terminal screen. It is a figure which shows.

In this method, the object number is stored in the storage unit 18 as a parameter according to the call broadcast event generated in step S13 of FIG. 5 from the smart terminal 10 to the call connection server 30. It provides the destination number according to the call broadcast event catch occurrence corresponding to wake-up. When the smart terminal 10 provides the CID (caller ID) together with the object number, the call connection server 30 attempts to connect the call to the smart terminal 10 and the object terminal 50, respectively. . That is, after the call connection server 30 sets up the state of the call connection with the smart terminal 10 and the target terminal 50, respectively, the call connection server 30 performs an intermediary operation so that the smart terminal 10 and the target terminal. 50 is the way to talk.

This method is used when two lines are connected, but the two line rates are much cheaper than the direct call connection between the smart terminal 10 and the target terminal 50 due to a special tariff applied in some countries. do.

This callback connection method has a relatively short connection time of about 7 to 8 seconds, and in particular, an object number (eg, 010-2790-48XX) is displayed on the dialing screen of the smart terminal 10. Referring to (c) of FIG. 9, when the user enters a destination number '010-2790-4845' on the dialing screen and makes a call, the destination number is displayed on the call connection standby screen and the call screen. have.

On the other hand, as in the method of FIG. 7, the callback connection method cannot be utilized when the smart terminal 10 is placed in a communication environment in which data communication is not possible, and a dial lug ([FIG. 9] is connected to the screen of the smart terminal 10. ] (C) 'connecting to remote call') is displayed even though it is displayed for a while.

On the other hand, with respect to the terms used in the present specification when explaining the basic concept for convenience of understanding as follows.

1) Telecommunication company: Install the telecommunication line equipment and use it to determine the kind and contents of the Ministry of Information and Communication, such as telecommunication and telephone service, taking into account the public interest, the impact on the national industry, and the necessity of providing stable service. Provider of telecommunication services.

2) Separate telecommunication company: A business that provides basic telecommunication services using telecommunication line facilities, etc. of a person who has permission for a telecommunication business, or installs or uses telecommunication facilities in a premises prescribed by Ordinance of the Ministry of Information and Communication. Operators providing telecommunication services.

3) Call type: Local, long distance, international, mobile, special call.

In addition, various call environments that can be utilized by the smart terminal in the present invention may be classified into a call environment using a main communication network and other call environments. First, the call environment using the main communication network is as follows.

1) 3G, 4G voice calls over backbone networks.

2) 3G, 4G data network-based IP calls over a backbone network.

Next, other call environments utilized by the smart terminal are as follows.

1) WLAN (free) based IP call. The purpose of enabling the IP, PSTN, mobile, and other calls of the destination through the relay of the dedicated telecommunications exchanger after connecting to the telecommunications operator's exchange using 3G, 4G, wireless LAN, and various other IP data networks that can be used by the smart terminal. Method of making a call connection with a terminal (telephone, etc.).

2) Toll-free access number to connect to the telecommunications company's switchboard and then connect to the destination terminal's IP, PSTN, mobile and other target terminals (telephones, etc.) through the relay of the telecommunications carrier's switch. In this case, 'tol free access' refers to a form of service in which a specific telecommunication company bears a cost for a consumer to access an exchange of a telecommunications company for a customer who wants to use the telecommunications service.

3) After connecting to the telecommunications company's exchange with the paid access number, connecting to the destination terminal (telephone, etc.) capable of making IP, PSTN, mobile, and other calls through the relay of the telecommunications company's exchange. In this case, 'paid access' refers to a type of service in which a user bears a cost for a consumer to access an exchange of a telecommunications company for a customer who wants to use the telecommunications service. In general, the cost is the local rate of the backbone network.

4) A method using a smart terminal application that connects a call using a backbone network or carrier network. At this time, the smart terminal application provider receives a fee from the charges charged by the carrier or carrier, or earns through so-called 'Carrier Access Billing' that mutual settlement between the operators. This revenue enables the application of the smart terminal to provide the international call service free or very inexpensively (international call cost <fee or settlement amount).

The invention can also be embodied in the form of computer readable codes on a computer readable recording medium. At this time, the computer-readable recording medium includes all kinds of recording devices in which data that can be read by a computer system is stored.

Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, which may be implemented in the form of a carrier wave (eg, transmission over the Internet). . The computer readable recording medium can also store and execute computer readable code in a distributed manner over networked computer systems. And functional programs, codes, and code segments for implementing the present invention can be easily inferred by programmers in the technical field to which the present invention belongs.

As described above, embodiments of the present invention have been disclosed in the specification and drawings, although specific terms have been used, which are merely used in a general sense to easily explain the technical contents of the present invention and to help understanding of the present invention. It is not intended to limit the scope of the invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention in addition to the embodiments disclosed herein are possible.

10: smart terminal
11: input / output unit
12: control unit
13: memory
14: call connection management application
14a: call connection means
14b: first connecting means
14c: second connecting means
14d: automatic switching means
15: dialing app
16: VoIP application
17: Calling App
18: storage unit
19: transceiver
20: backbone network
30: Call Server
40: IP connection server
50: destination terminal

Claims (8)

An automatic switching call connection management method for optimizing call charge and call stability in a smart terminal,
A first step of receiving a conditional communication product condition of a user;
A second step of generating, by the basic dialer module, a CallBroadcast event in response to a user inputting an object number through the basic dialer module of the smart terminal;
A third step of catching the call broadcast event while the call connection management module of the smart terminal monitors an event occurrence;
A fourth step of determining, by the call connection management module, the call usage of the smart terminal;
A fifth step of determining, by the call connection management module, whether the free voice call is possible by comparing the term communication product condition and the call usage with respect to the destination number extracted from the call broadcast event;
A sixth step of determining whether an international call is attempted when a free voice call is possible as a result of the fifth step;
A seventh step of executing a call connection with the destination terminal according to the destination number through the main communication network when the domestic telephone is determined as the sixth step;
An eighth step of setting a city fee type access number if the call is an international call as a result of the sixth step;
A ninth step of setting a toll-free access number if the free voice call is not possible as a result of the fifth step;
A tenth step of accessing an external call connection server through the set access number and executing a call connection with a destination terminal according to the destination number;
An eleventh step of failing the call connection if the call connection does not succeed within a preset threshold time, and automatically re-switching the call connection setting to a main communication network to re-connect the call to a target terminal;
Automatic switching call connection management method is configured to include.
The method according to claim 1,
In the ninth step, if the free voice call is not possible as a result of the determination in the fifth step, the access number list is generated in the order of the lowest price, and the lowest value is set as the toll-free access number.
The eleventh step is
If the call connection does not succeed within the threshold time, failing the call connection, automatically switching to a next access number in the access number list, and reestablishing a call connection with a target terminal;
If the redo of the call connection does not succeed within a preset final threshold time, failing the call connection through the access number list and automatically switching the call connection setting to a main communication network to redo the call connection to a target terminal;
Auto-switching call connection management method comprising a.
The method according to claim 2,
Identifying a short range wireless communication environment available through short range wireless communication of the smart terminal;
Determining whether a free call connection is possible in the short range wireless communication environment;
If it is determined that the free call connection is possible, executing the call connection with the target terminal through the free call connection in the short-range wireless communication environment;
The automatic switching call connection management method further comprises.
The method according to claim 2,
The fifth step,
Comparing the free voice call time of the currency product condition with the identified call usage amount;
Determining whether the free voice call time remains above a preset threshold time compared to the call usage;
It is configured to include,
And the sixth step determines whether an international call is attempted by recognizing the first three digits of the destination number.
The method of claim 4,
The tenth step is
A step A1 of determining whether the current communication environment of the smart terminal is a situation where a call connection is possible through data communication;
A second step of executing a call connection with a target terminal by accessing the call connection server by dialing the set access number if the communication environment is impossible to make a call connection through data communication as a result of the determination of step A1;
As a result of the determination of step A1, in case of a communication environment in which call connection is possible through data communication, the call-related information is provided to the call connection server through data communication, and the call connection with the target terminal is executed under the control of the call connection server. A3 step;
Auto-switching call connection management method comprising a.
The method according to claim 5,
The A3 step,
A31 step of providing the destination number to the external IP connection server through the data communication, and determines the line code through this;
If the line code is determined to be Call_Type A, dialing the set access number to access the call connection server to perform a call connection with a target terminal;
If the line code is determined to be Call_Type B, providing the identifier of the smart terminal through data communication, and when receiving the callback call connection from the call connection server, performs an automatic call answering to execute a call connection with the target terminal. step;
Auto-switching call connection management method comprising a.
The method of claim 6,
The fourth step,
Checking the call usage by the call connection management module by checking the call log of the smart terminal;
Determining, by the call connection management module, the call usage of the smart terminal by automatically connecting an external telecommunication company server;
Auto-switching call connection management method, characterized in that configured to perform one or more of the.
A computer-readable recording medium recording an automatic switching call connection management program for performing the automatic switching call connection management method according to any one of claims 1 to 7.

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