KR100833297B1 - Method and system for connecting call on reciprocity calling - Google Patents

Abstract

A voice call connection system and a method thereof are provided to increase the call success rate by granting the order of priority to each MSC(Mobile Switching Center) so that a low-priority MSC can give up a call attempt in case two users make calls to each other at the same time. An originating MSC, if a call request signal and a destination number are received from a calling terminal, confirms whether a called terminal is a mobile terminal(S110). If so, the originating MSC requests an HLR(Home Location Register) to provide information about a serving MSC which can connect a call to the called mobile terminal(S120). The originating MSC attempts a call connection to the called mobile terminal(S130). At this moment, the originating MSC judges whether the called mobile terminal is in the middle of making a call attempt(S140). If so, the originating MSC confirms whether the called mobile terminal is making a call attempt to the calling terminal(S150). If so, the originating MSC compares its own call priority order with the call priority order of the serving MSC(S160). In case the call priority order of the originating MSC is lower than the call priority order of the serving MSC, the serving MSC interrupts the call attempt from the originating MSC and makes a call attempt to the originating MSC according to the called mobile terminal's request(S170).

Description

Method and system for connecting call on reciprocity calling}

1 is a diagram illustrating a configuration of a voice call connection system for mutual transmission according to a first embodiment of the present invention.

2 is a flowchart illustrating a method of connecting a voice call to each other according to a first embodiment of the present invention.

FIG. 3 is a signal flow diagram between components of a system when a called terminal is a mobile terminal in a method of connecting a voice call during mutual transmission according to a first embodiment of the present invention.

Figure 4 is a signal flow diagram between the components of the system when the destination terminal is a wired terminal in the voice call connection method according to the first embodiment of the present invention.

5 is a configuration diagram of a voice call connection system at the time of mutual transmission according to the second embodiment of the present invention.

6 is a flowchart illustrating a method for connecting voice calls to each other according to a second embodiment of the present invention.

7 is a signal flow diagram between components of a system in a method of connecting a voice call during mutual transmission according to a second embodiment of the present invention.

The present invention relates to a voice call connection system and method for mutual calling, which gives priority to a mobile communication exchange period to terminate a call of a low priority exchange during mutual calling and maintains a call of a high exchange to connect a call. The invention is a system and method.

Cross-calling means that when a caller tries to talk to the called party and the caller tries to talk to the caller, the caller only signals that they are busy and the call is not connected. Both the caller and the called party want to talk to the other party. The call is not possible even if it exists.

In general, users try to make a call again after a certain time when the other party is busy while trying to make a call.In the case of mutual calling, the caller and the called party want to talk to each other. There was often a case of mutual origination.

Therefore, methods for connecting a call between a caller and a called party during mutual calling have been developed.

The conventional method of connecting a call between the caller and the called party during mutual calling is to check whether the called party is busy at the called party exchange through the home location register at the calling party exchange and attempting to call the caller if the called party is busy. If you are trying to make a call to the caller, you can connect the call between the called party and the caller.

However, the conventional method of connecting a call between a caller and a called party during mutual calling uses a home location register to check the status of the called party's terminal, so that the called terminal can be used only when the mobile terminal requires a home location register. Since call origination can occur between a mobile communication terminal and a wired terminal, or between a wired terminal and a wired terminal, there is a disadvantage in that a call cannot be connected when mutual call originating from a mobile communication terminal and a wired terminal or a wired terminal and a wired terminal.

In addition, since there is no designation for the exchange to connect the call, the caller who stops the call attempt from the side who tried to call later than the other party receives the call connected from the other party, but the caller confirms at the exchange when the caller and the called party attempt the call at about the same time. The caller appears to be in a call and the caller appears to be in a call, so both the caller and the caller decide to call later than the other party, so that the caller stops the call and attempts to receive a call from the other party. There was a problem.

The present invention has been made to solve the inconvenience of the prior art as described above,

SUMMARY OF THE INVENTION An object of the present invention is to provide a system and method capable of communicating at the time of mutual transmission even in a wired telephone network by determining mutual transmission in a switch commonly used in wired and wireless communication networks.

It is another object of the present invention to provide a system and method for making a call even when a caller and a called party try to call at the same time by giving a call priority to each exchange so that an exchange having a lower priority gives up the call when mutual calling occurs. It is.

In order to achieve the above object, the voice call connection system according to the present invention comprises an originating exchange that makes a call to a destination exchange that can be connected to a destination terminal according to a call request from an originating terminal, and a destination city incoming call of the originating exchange. Confirm that the terminal is in call, and if the call is in progress, check whether the caller is the calling terminal.If the caller is the calling terminal, stop the call of the called terminal and connect the call with the called terminal according to the call of the calling terminal. It characterized in that it comprises a called terminal.

According to the present invention, a voice call connection method according to the present invention includes a first step in which the calling exchange makes a call to the called exchange and transmits call priority information of the calling exchange, and the called exchange is busy or calling in the called terminal. Step 2 of checking the call, and the call exchange of the call exchange of the call exchange receiving the call priority of the call destination of the destination terminal, and the call exchange of the call destination of the called terminal in step 1 A step 4 comparing with and a step 5 in which the destination exchange confirming that the call priority of the destination exchange is high in step 4 ends the call flow from the originating exchange and makes a call to the originating exchange at the request of the called terminal; The terminating exchange, which has confirmed that the call priority of the originating exchange is high in step 4, from the originating exchange. Maintaining the call attempt, and step 6, and to stop the call attempt of a caller exchanger according to the request of the destination terminal; It characterized in that it comprises a seven steps that the call is connected between the calling terminal and the called terminal.

In the mutual calling according to the present invention, a method of connecting a voice call may include the first step of the user terminal transmitting a call number and a call request signal of a counterpart terminal to a mobile communication switch, and the mobile communication exchange information of a counterpart terminal to a home location register. A second step of requesting a third step, and a third step of transmitting, by the home location register, information on the other party's mobile communication exchange connected to the other party's terminal and information on the other party's terminal to the mobile communication exchange according to the request in the second step; Step 4 of the mobile communication exchange confirming whether the other party is busy or attempting to make a call from the information on the counterpart terminal transmitted in step 3; and from the information on the counterpart terminal transmitted by the mobile communication exchange in step 3. Step 5 of checking whether the other party's call attempt is the user terminal; The mobile communication exchange and the other party's mobile communication exchange compare the call priority of the other party's mobile communication exchange with the call priority of the caller's mobile communication exchange, and in step 6, the call priority of the mobile communication exchange is high. A step 7 in which the mobile communication exchange stops the call view to receive the call view of the other party's mobile communication exchange; and in step 6, the other party mobile communication exchange confirms that the call priority of the other mobile communication exchange is low. And step 8 to receive a call diagram of the mobile communication switch. And nine steps in which a call is connected between the user terminal and the counterpart terminal.

Hereinafter, a look at the voice call connection system and method in mutual transmission according to the present invention through a preferred embodiment in more detail.

1 is a structural diagram of a voice call connection system during mutual transmission according to a first embodiment of the present invention.

The voice call connection system at the time of mutual transmission according to the present invention is a voice call connection system at the time of mutual call in a wired / wireless communication network, as shown in FIG. 1, with a caller terminal 110, a caller switch 120, and a home location register 130. The receiver mobile communication switch 140, the receiver mobile terminal 150, the receiver wired switch 160 and the receiver wired terminal 170 is configured.

The caller terminal 110 is a terminal that transmits a signal for requesting a telephone call to the called party's mobile terminal 150 or the called party's terminal 170 according to the caller's input.

The caller switch 120 is a communication switch having a call priority set, and transmits the information about the caller mobile terminal 150 to the home location register 130 according to a signal requesting a phone call transmitted from the caller terminal 110. Request and make a call to the called party mobile communication switch 140 according to the information of the called mobile terminal 150 transmitted from the home location register 130.

The caller switch 120 is a communication switch with a call priority set, and if the signal requesting a phone call transmitted from the caller terminal 110 is a signal for a call with the called party's wired terminal 170, the wired telephone. The receiver terminal 170 is connected to the receiver wired switch 160 connected to the call.

The caller switch 120 transmits information on the call priority of the caller city switcher 120 to the callee mobile communication switch 140 or the caller wired switch 160 together.

The home location register 130 is a server that stores information of the terminal and the mobile communication exchanger. The location of the caller terminal 110 and the called mobile terminal 150 and the caller exchanger 120 to be connected with the caller terminal 110 accordingly. Information about the called-party mobile communication exchange 140 for connecting with the called-party mobile terminal 150 is stored.

The called party mobile communication exchanger 140 checks the information of the called party mobile terminal 150, which is the target of the call view, according to the call view of the caller exchange 120 with the mobile communication switch having the call priority set, and the called party mobile terminal ( If 150 is attempting to make a call to the caller terminal 110, the call priority of the caller switch 120 is increased by comparing the call priority of the caller switch 120 transmitted from the caller switch 120 with a preset call priority. If the call priority is higher than the preset call priority, the call is stopped from the called party's mobile terminal 150 to the caller's terminal 110 so that the call is connected according to the call view of the caller's exchange 120, and the call priority of the caller's exchange 120 is established. If the priority is lower than a preset call priority, the call termination of the caller switch 120 is stopped and the caller terminal 110 is connected to the caller mobile terminal 150. Ensure that the road views are connected.

The called party mobile terminal 150 is a terminal that transmits a signal for requesting a telephone call to the calling party terminal 110 according to the called party's input.

The called party wired switch 160 confirms the information of the called party wired terminal 170 that is the target of the call according to the call diagram of the caller switch 120 with the wired communication switch having the call priority set, and the called party wired terminal 170. ) Is attempting to make a call to the caller terminal 110, the call priority of the caller switch 120 is compared with the call priority of the caller switch 120 transmitted from the caller switch 120 to a preset call priority. If it is higher than the set call priority, the call is suspended from the called party's wired terminal 170 to the caller terminal 110 so that the call is connected according to the call view of the caller switch 120, and the call priority of the caller switch 120 is set. If it is lower than the preset call priority stops the call of the caller switch 120 to the caller terminal 110 to the caller terminal 110. Ensure that the diagrams are connected.

The called party's wired terminal 170 is a wired terminal that transmits a signal for requesting a telephone call to the caller's terminal 110 in response to a receiver's input.

2 is a flowchart illustrating a method of connecting a voice call at the time of mutual transmission according to the first embodiment of the present invention, and FIG. 3 is a case where a called terminal is a mobile terminal in the method of connecting a voice call at the time of mutual transmission according to the first embodiment of the present invention. 4 is a signal flow diagram between the components of the system, and FIG. 4 is a signal flow diagram between the components of the system when the called terminal is a wired terminal in the voice call connection method according to the first embodiment of the present invention.

In the mutual call according to the present invention, as shown in FIG. 2, the method of confirming whether the called party terminal is a mobile terminal (S110), checking the called party terminal information step (S120), calling step (S130), and called party terminal Checking whether the call is in progress (S140), whether the called party is calling the calling party's terminal (S150), or checking whether the call priority of the called party's mobile communication switch is higher than the call priority of the calling party's mobile communication exchange (S160). ), The end of the call view of the caller exchange step (S170), the step of maintaining the call view of the caller switch (S175) and the call step (S180).

Confirming whether the called terminal is a mobile terminal (S110), when the caller switch 120 receives a signal for requesting a telephone call from the calling terminal 110 and the called party's telephone number, the called terminal is transferred from the called party's telephone number to the mobile terminal. It is a step of confirming whether the terminal 150 or the wired terminal (caller wired terminal 170).

Recipient terminal information check step (S120) is a home terminal register 130, if the caller terminal 120 is a mobile terminal (recipient mobile terminal 150) in the step (S110) to determine whether the caller terminal is a mobile terminal. A step of requesting and receiving information about a called mobile communication exchange 140 that can connect a call to the called mobile terminal 150 is received.

The call view step S130 is a step in which the caller switch 120 attempts to connect a call for a phone call to the called party's terminal.

In the call diagram step S130, the caller switch 120 is a called party mobile communication exchanger 140 transmitted by the home location register 130 in the called party terminal information checking step S120 if the called party terminal is the called party mobile terminal 150. ), And if the called terminal is the called wired terminal 170, the called wired switch (160).

When the called terminal is a wired terminal, since the exchange connected to the terminal is specified, the home location register 130 does not require a request for information on the exchange.

Check whether the called party terminal is busy (S140) checks the information on whether the called party terminal is busy or call attempts that the called party is called in the call attempt step (S130), and the called terminal is busy or calling If not, it is a step of making a call by connecting a call with the called terminal.

The called party terminal is a terminal to which the calling party terminal 110 wants to talk. The called party's mobile terminal 150 or the called party's wired terminal 170. The called party's exchange is connected to a called party's terminal to which the calling party terminal 110 wants to talk. Depending on the type of called terminal, the called mobile communication exchange 140 or the called wired switch.

Confirmation step (S150) that the called party is called by the called party terminal caller terminal is the caller terminal of the called party terminal that the called party terminal confirms that the called party is busy in the step (S140) caller terminal (110) Checking the authorization, if not the calling party terminal 110, and sends a signal to the caller switch 120, and stops the call (call call connection effort) to the called party terminal.

The step of checking whether the call priority of the called party exchanger is higher than the call priority of the calling party exchange (S160) is that the called party terminal is present at the calling party terminal (S150). When it is confirmed that the caller terminal 110 attempts to call, the call priority of the called party exchanger is compared with the call priority of the caller exchanger 120.

Confirming whether the called terminal is a mobile terminal (S110), checking the information on the called terminal (S120), calling step (S130), checking whether the called terminal is busy (S140), the called party is calling the caller terminal Authorization check step (S150), whether the call priority of the called party mobile communication switch is higher than the call priority of the caller mobile communication exchange step (S160) is the caller switch 120 in the opposite direction (sender-> called party, called party) -> Caller) This is the same step.

The call termination end step (S170) of the caller exchange is performed by the called party exchanger confirming that the call priority of the called party exchange is higher than the call priority of the caller exchange (S160). As shown in FIG. 4, the call view is terminated from the caller switch 120 and the call switch 120 is called at the request of the called party's terminal.

The call view maintaining step of the caller exchange (S175) may be performed by the called party exchanger which has confirmed that the call priority of the caller exchanger 120 is high in step S160, wherein the call priority of the caller exchanger is higher than the call priority of the caller exchanger. As shown in FIG. 3 and FIG. 4, the call view is maintained from the caller switch 120, and the call view to the caller switch 120 is stopped at the request of the called party's terminal.

The call step (S180) is a step in which only one of the caller mobile communication exchanger 120 and the caller mobile communication exchanger 140 makes a call call so that the call is connected and the call is connected between the caller terminal 110 and the caller terminal.

5 is a structural diagram of a voice call connection system at the time of mutual transmission according to the second embodiment of the present invention.

The voice call connection system for mutual calling according to the second embodiment of the present invention is a voice call connection system for mutual calling for a mobile communication network, as shown in FIG. 5, as shown in FIG. 5, a caller terminal 210, a caller mobile communication switch 220, and a home. Location register 230, called-party mobile communication exchange 240, and called-terminal 250.

The caller terminal 210 is a terminal that transmits a signal for requesting a telephone call to the called party terminal 250 according to the caller's input.

The caller mobile communication switch 220 is a mobile communication switch with a call priority set to the home terminal register 230 for the caller terminal 250 according to a signal requesting a phone call transmitted from the caller terminal 210. If the information is requested and the information on the called party terminal 250 transmitted from the home location register 230 includes information indicating that the called party terminal 250 is attempting to make a call to the calling party terminal 210, the called mobile communication exchanger 240 If the call priority of the called party's mobile communication switch 240 is further set by comparing the call priority with the preset call priority, the call termination is stopped.

When the caller mobile communication switch 220 requests information about the called party terminal 250 from the home location register 230, a call to the called party terminal 250 is displayed on the information of the calling party terminal 210 stored in the home location register 230. Update the information on the way.

The home location register 230 is a server that stores information of the terminal and the mobile communication exchanges. The location information of the caller terminal 210 and the called party terminal 250, information of whether the user is busy and the call party is stored, and the caller mobile communication exchange ( Call priorities of all mobile communication exchanges, including 220 and recipient mobile communication exchange 240, are stored, so that the call priority of the recipient mobile communication exchange 240 is transmitted to the caller mobile communication exchange 220 during mutual transmission. In addition, the called party mobile communication switch 240 transmits the call priority of the caller mobile communication switch 220 so that the call view can be stopped at the low priority mobile communication switch.

The called party mobile communication switch 240 is a mobile communication switch having a call priority set to the home location register 230 for the calling party terminal 210 according to a signal requesting a telephone call transmitted from the called party terminal 250. When the information is requested and the information of the caller terminal 210 transmitted from the home location register 230 includes information that the caller terminal 210 is attempting to call the called party terminal 250, the caller mobile communication exchange 220 If the call priority of the caller mobile communication switch 220 is further set by comparing the call priority with the preset call priority, the call termination is stopped.

The called party terminal 250 is a terminal that transmits a signal requesting a phone call to the calling party terminal 210 according to the called party's input.

6 is a flowchart illustrating a method of connecting a voice call at the time of mutual transmission according to the second embodiment of the present invention, and FIG. 7 is a signal flow diagram between components of the system in the method of connecting a voice call at the time of mutual transmission according to the second embodiment of the present invention. to be.

In the mutual call according to the present invention, the voice call connection method as shown in FIG. 2 is called by the receiver terminal information request step (S210), the receiver terminal information transmission step (S220), the caller terminal confirms that the caller is busy (S230), the called party. Checking whether the party to be called by the terminal is the calling party terminal (S240), Call priority of the called mobile communication exchange is higher than the call priority of the calling mobile communication exchange (S250), Stopping the call view of the caller mobile communication exchange (S260), the call view maintaining step (S265) and the call step (S270) of the caller mobile communication exchange.

In the receiver terminal information request step (S210), the caller mobile communication switch 220 receiving the call request signal and the telephone number of the called party terminal 250 from the caller terminal 210 homes the telephone number of the called party terminal 250. Transmitting to the location register 230 to request information about the called party terminal (250).

In the callee terminal information request step (S210), the home location register 230 receiving the telephone number of the called party terminal 250 calls the caller terminal 210 to the called party terminal 250 in the information about the caller terminal 210. Update the information that you want to connect.

Recipient terminal information transmission step (S220) is the home location register 230 is connected to the receiver terminal according to the telephone number of the called party terminal 250 received in the receiver terminal information request step (S210) mobile communication switch 240 ) And information about the called party's terminal 250 is transmitted to the caller's mobile communication switch 220.

In the receiver terminal information transmitting step (S220), the information on the called party mobile communication exchanger 240 transmitted by the home location register 230 includes information on the call priority of the called party mobile communication exchanger 240.

The information on the called party terminal 250 transmitted by the home location register 230 in the called party terminal information transmitting step (S220) includes information on whether the called party terminal 250 is busy and information on a counterpart attempting to make a call. It includes.

Checking whether the called party's terminal is busy (S230) is performed by the caller mobile communication switch 220 in the information about the called party's terminal 250 transmitted in the called party's terminal information transmitting step (S220). Checking the information on whether the call is in progress or if the call is not attempting to make a call, it is a step of making a call with the called party terminal 250 by connecting a call with a called mobile communication exchange.

At step S240, the caller terminal attempts to make a call by the called party's terminal 250, in which the calling party's mobile communication switch 220 confirms that the called party's terminal is busy. Checking whether the other party is the calling party terminal 210, and if the calling party terminal 210 is not a call to the caller terminal 210 is a step of stopping the call (call call effort).

The step of checking whether the call priority of the called party mobile communication switch is higher than the call priority of the calling party mobile communication exchange (S250) is performed by the caller mobile communication exchange 220 to determine whether the called party is the caller terminal. In step S240, when the called party terminal 250 confirms that the current caller terminal 210 wants to make a call, comparing the call priority of the called party mobile communication switch 240 with the call priority of the caller mobile communication switch 220. to be.

The called party terminal information request step (S210), the called party terminal information sending step (S220), the caller terminal checks whether the call is in operation (S230), the caller terminal checks whether the called party is the caller terminal (S240), and the caller moves. The step of checking whether the call priority of the communication exchanger is higher than the call priority of the caller mobile communication exchange (S250) proceeds in the same manner by reversing the target (caller-> caller, caller-> caller) in the called mobile communication switchboard 240 as well. It is a step.

Call priority stopping step of the caller mobile communication switch (S260) is the call priority of the caller mobile communication exchange is higher than the call priority of the caller mobile communication switch in the step (S250) call priority of the recipient mobile communication exchange 240 As shown in FIG. 7, the caller mobile communication switch 220 confirming that the value is high stops the call view to the receiver mobile communication switch 240 so as to receive the call view of the receiver mobile communication switch 400.

In the call view maintenance step of the caller mobile communication switch (S265), the call priority of the caller mobile communication exchange is higher than the call priority of the caller mobile communication switch (S250). The caller mobile communication switch 220 confirming that the number is high maintains a view to the receiver mobile communication switch as shown in FIG. 7 so that the call diagram from the receiver mobile communication switch 240 to the caller mobile communication switch 220 is maintained. When the call is stopped, the call is connected.

The call step (S270) is a step in which only one of the caller mobile communication exchanger 220 and the caller mobile communication exchanger 240 attempts a call so that the call is connected and the call is connected between the caller terminal 210 and the caller terminal 250. .

Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. You will understand that. Accordingly, the embodiments described above are exemplary in all respects and not restrictive.

The system and method for connecting a voice call at the time of mutual transmission according to the present invention as described above are connected to each other in a wired telephone network by judging mutual transmission at a switch commonly used in wired and wireless communication networks. There is a possible effect.

In addition, call priority is given to each exchange so that exchanges having lower priorities abandon the call when mutual calling conditions occur, so that the call can be made even when the caller and the called party attempt to call at the same time.

Claims (11)

An originating exchange that makes a call to a destination exchange that can be connected to a destination terminal according to a call request from the originating terminal, Confirm that the called terminal of the calling exchange is in the hoshido, and if it is in the hoshido, check whether the called party is the calling terminal, and if the calling party is the calling terminal, stop the calling of the called terminal and follow the call of the calling terminal. A voice call connection system for mutual calling, comprising: a called terminal for connecting a call with a called terminal. An originating exchange that requests information of the destination exchange that can be connected to the destination terminal at the home location register according to a call request from the originating terminal, and makes a call according to the information of the destination exchange; A home location register which stores information of a destination exchange that can be connected to a destination terminal and transmits information of the destination exchange to the originating exchange at the request of the originating exchange; Confirm that the called terminal of the calling exchange of the calling exchange is in the hoshido, if the calling party is the calling terminal, and if the calling party is the calling terminal, the call of the calling terminal is stopped and the call of the calling terminal is stopped. A voice call connection system for mutual calling, comprising: a called terminal for connecting a call with a called terminal according to an attempt. The method according to claim 1 or 2, The originating exchange and the destination exchange are exchanges in which call priority is set. The calling exchange transmits information on the call priority of the calling city switching exchange, The called exchanger compares the call priorities of the calling exchange and the called exchange when the called terminal is in call and the call counterpart is the calling terminal. Voice call connection system for mutual calling, characterized in that to connect the call in accordance with the visibility of the high-ranking exchange. The calling exchange that makes a call to the called exchange that can be connected to the called terminal according to the call request from the calling terminal, and confirms that the called terminal of the calling city of the calling exchange is in the middle of the call. In the system including the called terminal which stops the calling view of the called terminal and connects the call with the called terminal according to the calling diagram of the calling terminal when the called party is the calling terminal, A step 1 in which the originating exchange makes a call to the destination exchange and transmits call priority information of the originating exchange; A step 2 in which the called exchange checks whether the called terminal is busy or in a call; Step 3, wherein the called exchange checks whether the called party of the called terminal is the calling terminal; Step 4 in which the called exchange compares the call priority of the called exchange with the call priority of the originating exchange received in step 1; A step 5 in which the destination exchange confirms that the call priority of the destination exchange is high in step 4, ending the call flow from the originating exchange and performing a call to the originating exchange at the request of the called terminal; A sixth step in which the destination exchange, which has confirmed that the call priority of the calling exchange is high in step 4, maintains a view from the originating exchange and stops the call to the calling exchange in response to a request of the called terminal; Method of connecting a voice call at the mutual call, characterized in that it comprises a seven steps that the call is connected between the calling terminal and the called terminal. The method according to claim 4, Step 8, wherein the calling exchange checks whether the called terminal is a mobile terminal or a wired terminal from a called telephone number; In step 8, if the originating exchange is a destination terminal, the mobile terminal further comprises nine steps of receiving and requesting information on a called mobile communication exchange capable of connecting a call to a destination mobile terminal at a home location register. How to connect voice call when outgoing. An outgoing mobile communication exchange that requests information of a destination exchange that can be connected to a destination terminal at a home location register according to a call request from a calling terminal to a mobile communication switch having a call priority set; A home location register which stores information of a destination exchange that can be connected to a destination terminal and transmits information of the destination exchange to the originating exchange at the request of the originating exchange; A destination mobile communication exchange that requests information of an originating exchange that can be connected to an originating terminal to a home location register according to a call request from a destination terminal to a mobile communication exchange having a call priority set, The outgoing mobile communication exchange and the incoming mobile communication exchange have a priority of call by comparing call priorities of respective mobile communication exchanges when a mutual call situation occurs in which each terminal wants to make a call from each other based on information transmitted from a home location register. A voice call connection system, wherein a call is connected by interrupting a call attempt at a low mobile communication exchange. The method according to claim 6, The information stored in the home location register includes the location of the terminal, whether the call is in progress, information on the call partner, and the call priority of the mobile communication switch. An outgoing mobile communication switch that requests information on a destination exchange that can be connected to a destination terminal at a home location register according to a call request from a calling terminal to a mobile communication switch having a set call priority, and a destination exchange that can be connected to a destination terminal. A home location register for storing information and transmitting information of the destination exchange to the originating exchange at the request of the originating exchange; A voice call is connected to each other in a system including an inbound mobile communication exchange that requests information of an outgoing exchange that can be connected to a calling terminal at a home location register according to a call request from a called terminal to a mobile communication switch having a set call priority. Way, Step 1, wherein the originating mobile communication exchange requests information on a counterpart terminal from a home location register; Transmitting, by the home location register, information on the incoming mobile communication switch connected to the called terminal and information on the called terminal to the calling mobile communication switch according to the request in step 1; Step 3, wherein the originating mobile communication exchange checks whether the other party is busy or attempts to make a call from the information on the called terminal transmitted in step 2; Step 4, wherein the originating mobile communication exchange determines whether the call attempt counterpart of the called terminal is the calling terminal from the information on the called terminal transmitted in step 2; Step 5 in which the outgoing mobile communication exchange compares the call priority of the incoming mobile communication exchange with the call priority of the outgoing mobile communication exchange; A sixth step in which the outgoing mobile communication exchange, which has confirmed that the call priority of the incoming mobile communication exchange is high in step 5, stops the call view and receives the call view of the incoming mobile communication exchange; A seventh step in which the outgoing mobile communication exchange having confirmed that the call priority of the incoming mobile communication exchange is low in step 5 is waiting for the call of the incoming mobile communication exchange to be stopped while maintaining the view; 8. The method of claim 1, wherein the call is connected between the calling terminal and the called terminal. 8. The method of claim 8, In step 1, the home location register is a voice call connection method for mutual calling, characterized in that for updating the information that the calling terminal to the call to the destination terminal to the information on the calling terminal. The method of claim 8, And the information on the incoming mobile communication exchange transmitted by the home location register in step 3 includes information on the call priority of the counterpart mobile communication exchange. The method of claim 9, In the step 3, the information on the counterpart terminal transmitted by the home location register includes information on whether the counterpart terminal is busy and information on the counterpart to which the counterpart terminal attempts to make a call. How to connect.

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