KR20060050101A - Method for processing call establishment by using character string - Google Patents

Abstract

A call connection request method in which a telephone user inputs a name of a party to which he / she wants to call in a string form and immediately requests a call to the exchange system, and the call processing of the exchange system for a call connection request by such string dialing Way. The string call processing program loaded and executed on the terminal first accepts the string input by the user in place of the called party identifier through the keypad and displays it on the display in real time. Recognizing that the originating key is pressed in the keypad, the character string call processing program converts each character constituting the input character string into a plurality of digits by a predetermined rule, for example, according to a digit-to-character mapping rule defined on the keypad. Then, the character string call processing program includes the numeric string converted with the character string and a predetermined character dialing identifier to transmit a call connection request message to the switching system via the base station of the wireless network through the call processing circuit. If the call connection request message includes a text dialing identifier, the switching system reads the called terminal number registered in the storage means in advance by using the called party identification code included in the call connection request message, and the called terminal and the called terminal. Set up a call path between terminals.

Text Entry Dialing, Text Dialing, Text Dialing, Text Entry Calling

Description

Call handling method suitable for string dialing {METHOD FOR PROCESSING CALL ESTABLISHMENT BY USING CHARACTER STRING}

1 shows an embodiment of a wireless communication system for implementing the method of the present invention.

Figure 2 is a table showing an example of the number-character arrangement rule on the keypad of the wireless terminal.

FIG. 3 is a table showing a number-character arrangement rule lookup table stored in the service control point shown in FIG. 1; FIG.

FIG. 4 is a table illustrating a field configuration of a string database stored in a service control point shown in FIG. 1. FIG.

5 is a flowchart showing a string registration process in a string registration server.

6 is a flowchart schematically illustrating a call connection request and call processing process using string dialing according to the present invention.

7 is a flowchart illustrating a string call connection request process in a calling terminal in detail.

8 is a diagram illustrating an idle screen of a number dialing mode and a string dialing mode in a calling terminal.

9 and 10 are flow diagrams showing in detail the call processing process in the originating exchange.

11 is a flowchart illustrating a short message transmission process using string dialing according to the present invention.

FIG. 12 is a table illustrating an example of field configuration of a wireless Internet access string database operated by a swap gateway server shown in FIG.

FIG. 13 is a flowchart schematically illustrating a process of requesting and processing a wireless Internet connection by string dialing according to the present invention. FIG.

14 illustrates another embodiment of a wireless communication system for implementing the method of the present invention.

Figure 15 shows another embodiment of a wireless communication system for implementing the method of the present invention.

16 is a diagram illustrating a mapping table in which a target character and a mapping number are recorded according to another embodiment of the present invention.

17 is a diagram illustrating a called party database in which a called party string and a called number are recorded according to another embodiment of the present invention.

18 is a flowchart illustrating a flow of a method for controlling a call connection of a switching system according to another embodiment of the present invention.

FIG. 19 illustrates a flow of a method for generating a second sequence of numbers of a calling terminal according to another embodiment of the present invention when the number of characters of a string input by a user is greater than or equal to a predetermined value.

20 is a flowchart illustrating a call connection control method of a switching system receiving a call connection request message including a second string of numbers having a number of characters of a character string input by a user according to another embodiment of the present invention. drawing.

The present invention relates to a call processing process in a communication system, and more particularly, to a method in which a communication terminal requests a call connection to a switching system and a method in which a switching system receiving a call connection request performs a call processing. will be.

In order to make a phone call with a desired party via a telephone, you must dial the other party's phone number. In this case, when the called party's phone number is not remembered, the caller typically checks the other party's phone number by referring to the phone book recorded in a notebook or other recording medium. By the way, in the case of a mobile phone which is often used while moving, the user often has difficulty in making a call since the user does not have such a notebook or diary. In this case, the telephone user may check the called party's telephone number by sending a call to the telephone number guide system, but in many cases, it is impossible to verify because the individual has many people with the same name and the internal number of the company is not guided. There is a problem that the burden of call charges increases.

Since the latest called-in number is stored in the mobile phone, telephone users often use this number to make calls. However, there are usually only a few dozens of incoming and outgoing calls stored on the phone, and you have to navigate through the scroll keys to find the one you want. Therefore, this method is suitable for checking the number of the person who has just called, but it is inconvenient for the other party who has passed the call time since the phone number is deleted from the memory and cannot be retrieved or the scroll keys must be operated a lot. In addition, the search takes a considerable time.

It is also widely practiced for telephone users to store telephone numbers or important telephone numbers of people they frequently call in the telephone directory directly along with their owners' names and use them to make calls. When the stored telephone number is to be searched, it is possible to search by various criteria such as all or part of a name, a speed dial number, and a group name. However, since it is virtually impossible to set up a speed dial number and remember a speed dial number for many people, it is common to set up speed dials and search using only a few of them. Or search using the group name. However, when searching in this way, there is a problem that it is quite cumbersome because the phone menu having a hierarchical structure must be searched sequentially or step by step.

First of all, it is a very cumbersome and tedious task for a telephone user to save all the phone numbers that he or she might use in the future for later use, as well as having to re-enter all the phone numbers, especially if the device changes. There is this. In order to save the trouble of re-input when changing the terminal, the service that the user saves a large number of telephone numbers to the server through the network has been suggested several times, but it is inconvenient to synchronize the information stored in the telephone and the dialing process performed on the telephone. It is not practically used because it does not fundamentally improve the hassle of.

The present invention is to solve such a problem, the caller who makes a call to the service user to enter the user's name in the form of a string and immediately request the call to the exchange system, and thus by dialing the string The technical problem is to provide a call processing method that enables the exchange system to perform call processing when a call connection request occurs.

The present invention also converts a character string input by the sender into a predetermined sequence of strings by referring to a mapping table in which mapping numbers corresponding to each character that the caller can input through the calling terminal are recorded and transmitted to the switching system. It is therefore a technical object of the present invention to provide a call processing method capable of requesting a call call more effectively.

According to one aspect of the present invention for achieving the above technical problem, a call processing method is used in which a switching system mediates a call connection between a calling terminal and a called terminal. First, the switching system stores (a) the corresponding information of the substitute identifier designated by the called terminal user and the called terminal telephone number in predetermined storage means. In this state, when (b) the call connection request message is received from the originating terminal, the exchange system determines whether (c) the call connection request message includes a predetermined character dialing identifier. (d) If the call connection request message includes a text dialing identifier, the exchange system reads the called terminal phone number from the storage means using the called party identification information included in the call connection request message, and (e) the calling terminal. Set the call path between the call and the called terminal.

In the exchange system storing the substitute identifier and the called terminal number in the storage means in step (a), the substitute identifier and the called telephone number, which are strings, are stored in the string table of the storage means, and on the keypad for each terminal. Preferably, the string representation of the string according to the alpha-numeric correspondence rule is stored in a look-up table of the storage means. In this case, in step (b), the exchange system accepts a call connection request message including called party identification information in the form of a numeric string representation of the substitute identifier according to the alpha-numeric correspondence rule of the calling terminal, and (d). In the above, the caller identification information in the form of a numeric string representation of the replacement identifier is converted into a string replacement identifier by referring to the lookup table, and the recipient terminal telephone number is read out from the string table using the string replacement identifier.

According to another aspect of the present invention for achieving the above technical problem, the call processing method is used by the text message transmission system to send a text message requesting the transmission from the calling terminal to the called terminal. First, the transmission system stores (a) the corresponding information of the substitute identifier designated by the called terminal user and the called terminal telephone number in predetermined storage means. In this state, (b) upon receiving the text message transmission request message from the originating terminal, the transmission system determines whether (c) the text message transmission request message includes a predetermined text dialing identifier. (d) if the text message request message includes a text dialing identifier, the transmission system reads the called terminal number from the storage means using the called party identification information included in the text message request message, and (e) Send a text message to the called terminal.

According to another aspect of the present invention for achieving the above technical problem, the call processing method is used for the wireless Internet access mediation system to support the terminal to access resources on the wireless Internet. First, the system first stores (a) the corresponding resource identifier in place of the resource identifier of the resource and the corresponding information of the resource identifier in predetermined storage means. In this state, (b) upon receiving the connection request message from the terminal, the system determines whether (c) the predetermined message dialing identifier is included in the connection request message. (d) if the connection request message includes a text dialing identifier, the system reads the resource identifier from the storage means using the resource identification code included in the connection request message, and (e) terminates the connection of the terminal with the resource. Redirects to allow the terminal to access the resource.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 shows an embodiment of a wireless communication system for implementing a call connection request method and a call processing method of the present invention. The illustrated system includes a wireless communication network 20 and a string registration server 60 connected to the wireless communication network 20 and to which the user clients 10 and 12 can connect through the wired and wireless Internet.

A terminal call processing program for string dialing is installed and executed in a terminal 10 for performing a call connection request by string dialing of the present invention. The character string call processing program of the calling terminal 10 converts each character constituting the input character string into a string of characters according to a predetermined rule when the user inputs a character string in a string dialing mode and presses a call key, that is, a "call" button. The call connection request message is then sent to the originating exchange 26 through the base stations 22 and 24 of the radiotelephone network with an identifier indicating the character dialing. In a preferred embodiment, the character string call processing program converts the character string input by the user of the originating terminal 10 into a string of numbers according to the number-character arrangement rule defined on the keypad. For example, Figure 2 shows a number-character arrangement rule on the keypad according to the Hangul input method adopted by most mobile phones of Samsung Electronics Co., Ltd., the string call processing program is a number string according to these rules. Convert to

In order to handle call connection requests by string dialing, each switch 26, 36 of the wireless communication network 20 has a number-letter arrangement rule for terminals of all manufacturers, including the number-letter arrangement rule shown in FIG. Is stored in the form of a lookup table. 3 shows a number-character array lookup table operated by exchanges 26 and 36. In addition, each switch 26, 36 of the wireless communication network 20 is provided with a database for storing the character string-called party identification number mapping information registered in advance by each user. 4 shows an example of the field configuration of the character string database operated by the exchanges 26 and 36. Each record stored in the character string database may include fields such as a character string registered by the user, a MIN number of the user who registered the character string, a registration date, and the like, and may also include a field indicating a validity period of registration granted by the user or the system operator. Here, the character string is a representative name of each user's real name or an alias assigned by the user, and two or more character strings may be registered for one user.

The originating exchange 26, when the call connection request from the originating terminal 10 includes a string dialing identifier, extracts a string of numbers included as a called party code in the call connection request message, and from this the lookup table of FIG. Reference to restore the character string entered by the user of the calling terminal 10, and confirms the recipient telephone number (for example, MIN number or landline telephone number) registered in advance by the receiver for this character string in the database of FIG. Then, the originating exchange 26 checks the position of the terminating terminal 50 from the home location register 34 in a conventional manner, and then addresses the terminating exchange 36 which manages the terminating terminal 50. The call processing for the called terminal 50 is performed.

The string registration server 60 may be connected from the user client 12 through the wired Internet, and is suitable for each user to express himself / herself to others. Allows you to register a. The string registration may be performed from the wireless terminal 50 through, for example, the wireless Internet based on a wireless application protocol (WAP). That is, the user of the terminal 50 may access the WAP gateway server 40 such as NATE server of SK Telecom Co., Ltd., navigate the menu, select the string registration menu, and register the string. The string registration server 60 provides the string information registered by the user to the SCP 28 either actively or in response to the request of the SCP 28, so that the SCP 28 stores it in a database and requests a call connection by dialing the string. This information can be used to verify the called party identification number (eg, MIN number) upon receipt. On the other hand, the user may access the string registration server 60 through the wired or wireless Internet to delete or change the registered string.

In the wireless communication network 20, a base station transceiver (BTS) 22 transmits and receives a radio signal with the terminal 10, modulates and demodulates a signal transmitted and received, and a radio channel setting request message and a call request message received from the calling terminal 10. And the like, to the switching center (MSC) 26 via the base station controller (BSC) 24, and establishes a wireless channel with the calling terminal 10 in accordance with the wireless channel setting command from the base station controller 24. The base station controller 24 controls the radio channel setting and release of the originating terminal 10 of the base station transmitter 22, the transmission output of the base station transmitter 22, and the like, and determines whether to perform a handoff. And control the wireless connection of the calling terminal 10.

In one embodiment, the wireless connection between the terminal 10 and the base station transceiver 22 is an IS-95 A / B / C, CDMA 2000 1x EV-DO / EV-DV, WCDMA, GSM, or fourth generation mobile communication network. According to the specification of ALL-IP network. Similarly, the wired connection between the base station transceiver 22 and the switch 26 conforms to the IS-95 series standard, the GSM standard or the AAL signaling standard, corresponding to the connection standard between the terminal 10 and the base station transceiver 22. On the other hand, although omitted for simplicity, the terminating exchange 36 for providing a service to the terminating terminal 50 also has a similar technical configuration as the originating exchange 26, and is received through a base station controller and a base station transmitter not shown. It may be connected to the terminal 50.

The service switching point (SSP) 28 of the originating exchange 26 performs a service switching function for handling incoming and outgoing calls of subscribers, and a call control function for handling location registration procedures and handoff procedures. In addition, wireless base stations are controlled to be efficiently operated. In the SSP 28, a trigger point for recognizing an intelligent network service call is set, and processes an additional service of a subscriber under the control of a service control point (SCP) 30. Particularly, in the present invention, the SSP 28 has a trigger point for detecting an identifier indicating that the call connection request is a request by string dialing. When the trigger point is detected, the SSP 28 is triggered together with the calling party MIN number and the called party code. Signals are provided to SCP 30 for service control from SCP 30.

The service control point (SCP) 30 is connected to the SSP 28 through the No. 7 signal network, and performs a service control function based on the information registered in the database at the request of the SSP 28. Control the operation. In particular, in the present invention, when the SCP 30 receives the string dialing trigger signal from the SSP 28, the character string input by the originating terminal 10 user from the numeric string transmitted from the terminal as the called party code is shown in FIG. The lookup table is restored and the called party number registered in advance by the user is checked for this character string in the database of FIG. 3B. SCP 30 then provides the called party identification number to SSP 28 so that SSP 28 can continue the call.

Home Location Register (HLR) 34 is a register having an in-network database function that manages subscriber information and location information for a home subscriber, as is well known, and a Visitor Location Register (VLR) 32. ) Is a register that temporarily stores subscriber information and location information about the subscriber.

The WAP gateway server 40 is connected to the originating exchange 26 through an interworking function 38. The IWF 38 is a gateway that allows a wireless communication network and a wired communication network to be connected. Since the IWF 38 is a device well known to operators in the wireless communication field, detailed description thereof will be omitted. WAP gateway server 40 (40) is a server that provides information based on, for example, a wireless application protocol (WAP), such as a NATE server operated by SK Telecom Co., Ltd. Provide content provided by external CP servers 80a to 80n to the client. A short message service center (SMSC: 46, 48) is connected to the originating exchange 26 and the destination exchange 36 to provide a short message service. Store and send short messages to send and receive.

On the other hand, the base station controller 24 of the radiotelephone network 20 may be directly connected to the WAP gateway server 28 via the IP network. In this case, the base station controller 24 connects the packet data service node (PDSN, not shown), and transmits the data transmitted from the terminal to the wireless network and the data transmitted from the wireless network to the terminal 10. Through the IP network via the packet unit.

5 shows a string registration process in the string registration server 60. A user who wants to register a character string for character string dialing, for example, a receiver terminal 50 user, accesses the character string registration server 60 using a data terminal 52 such as a PC to register the character string. Here, after the user accesses the WAP gateway server 40 through the wireless Internet using the calling terminal 50, the string registration server 60 is selected by selecting a string registration menu from a menu provided by the WAP gateway server 40. You can also register a string by accessing.

When the user accesses in step 100, the character string registration server 60 performs a service subscriber authentication procedure (step 102). When the user is connected through the wired Internet client 12, the string registration server 60 may perform the subscriber authentication by requesting an ID and password and comparing the registered information with the information input from the user. In this case, the string registration server 60 may perform a member registration procedure after guiding the member registration for the user who is not registered. On the other hand, when the user is connected via the wireless Internet using the terminal 50, the caller identification number included in the access request message can be extracted to perform the authentication operation without a separate ID and password input process.

After the subscriber authentication is completed, the user may make a string registration request to the string registration server 60. When the registration request is received (step 106), the string registration server 60 determines whether the registration requested string does not overlap with the previously registered string (step 108). If a registration request is made for a string that overlaps with a previously registered string, the string registration server 60 provides a message informing that the string is a registered string and requests the user to modify the input string (step 110). .

If it is determined in step 108 that the strings requested to be registered are not previously registered, the string registration server 60 determines whether each string has a valid length (step 112). In the preferred embodiment, the length of each string is completely included as a caller identification code in the call connection request message within the range of Message Capsule Size defined in the standard supported by the wireless network when converted into a numeric string. It is preferable. If the converted numeric string is registered for a string exceeding the message capsule size, the string registration server 60 may provide a message to inform the user that the length of the string exceeds the criteria and request the user to modify the string shortly. (Step 114).

When it is determined in step 112 that all of the requested strings have a valid length, the string registration server 60 stores the requested string in its database and informs the user that the registration is completed (step 116). Then, the string registration server 60 provides the newly registered or modified string periodically or aperiodically to the SCP 28 so that the SCP 28 stores it in the database and receives it when receiving a call connection request by string dialing. In this case, the identification number of the called party can be confirmed (step 118). On the other hand, when the string registration server 60 provides the registered or modified string to the SCP 28, it is provided in response to the request when the string registration information request is received directly from the SCP 28 or via another agent. You may. On the other hand, in FIG. 5, the determination operation of steps 108 and 112 may be performed as one step, and thus the guide operation of steps 110 and 114 may also be performed as one step.

As mentioned above, in registering the character strings, a predetermined expiration date may be registered together with the registration fee that the user desires or the user pays for each character string. In this case, when the validity period has elapsed, the string is deleted from the database of the string registration server 60 and the SCP 30. On the other hand, this validity period may be set by the character string registration server 60 on a user basis or on a character string basis. The validity period is particularly suitable when the service according to the present invention is provided for a fee. In this case, when the service is provided for a fee, the string registration server 60 performs a corresponding period of time before the validity of the registration of the registered string expires. Information can be provided to the application for extension of registration of character strings. Here, the information on the application for registration extension includes information such as registration validity period information and registration extension cost of the character string. When the registration extension request is received from the user, the registration validity period for the character string is updated, and the updated registration information is again provided to SCP 30.

When a caller who knows this string makes a call to a called party whose string has been registered, the caller may make a call connection request by inputting a string on his terminal 10, and the calling exchange 26 may correspond to the caller. Call processing is performed. 6 schematically shows a call connection request and call processing process by string dialing of the present invention.

When the user inputs a string instead of a phone number for a call connection, the calling terminal 10 converts the input string into a string of numbers according to a predetermined rule without referring to a separate address book table and processes a string call. The program is loaded and run. When the caller enters the caller's string on the standby screen and presses the call key (step 200 and step 202), the string call processing program converts the caller's input string into the numeric string (step 204) and the character along with the numeric string A resource allocation request is requested by adding a predetermined identifier indicating dialing to the call exchange request message through the base stations 22 and 24 of the radiotelephone network to the originating exchange 26 (step 206).

The originating exchange 26 receiving the call connection request message checks whether the message includes the string dialing identifier (step 210). If the call connection request message includes a string dialing identifier, the originating exchange 26 checks the called party's telephone number from the lookup table of FIG. 3 and the string table of FIG. 4 from the numeric string inserted as the called party identification code in the message. Then, call processing is performed (steps 212 and 214).

FIG. 7 shows a string call connection request process by a string call processing program on the originating terminal 10 in more detail.

In a preferred embodiment, the caller first enters a string dialing mode by pressing a specific key or key combination on the keypad, for example, by pressing and holding the "# " key for at least 1 second when the caller wishes to dial the string. The string call processing program continuously monitors whether there is a key input (step 250), and if there is a key input, determines whether the key input is a string dialing mode entry key input (step 252). If the key input is not for entering the string dialing mode, the corresponding function is performed (step 254). However, if it is determined that the key input is for entering the string dialing mode, the standby screen is shown in FIG. The call connection process by string dialing in steps 256 to 262 is performed after the screen is changed from the screen to the screen (b) indicating that the character string is dialed.

In step 256, the text call processing program accepts a character input through a keypad and causes the text to be displayed on the display in real time. This step continues until the caller presses a calling key, that is, a "call" button or gives up a call connection attempt. do. The program continuously monitors whether the calling key is pressed (step 258), and if it is recognized that the calling key is pressed, each character constituting the input string is looked up according to the number-character arrangement rule defined on the keypad. According to the table is converted into a plurality of numbers (step 260). For example, according to the conversion example of FIG. 2, when the caller presses the caller key after inputting "Wider", the input string "Wider" is converted into "0 23 12 0 1 6 21". Then, the program includes a string of numbers into which the keyed character string is converted and adds a character dialing identifier to transmit a call connection request message to the exchange 26 through the base stations 22 and 24 of the wireless telephone network (step 262). ). The identifier may be indicated by setting a reserved field in the call connection request message, or may be added to the front of the numeric string.

On the other hand, the terminal 10 has a 'string call management program' that can store and retrieve the outgoing records sent by using a string in a separate list such as the 'recent outgoing string' list instead of the basic 'recent outgoing number' list. It is mounted. However, in an embodiment in which such an embodiment is modified, the recent call string may be stored in a conventional 'last call number' list. In such a case, the string call processing program may not recognize the name of the character string registered in the address book. It is desirable to add and store a certain tag to indicate that it is used for string dialing according to the invention. When the caller wants to dial using a string stored in the 'recently dialed number' list, the string call processing program recognizes that the string is used for string dialing by the tag and performs a call connection request in the manner described above.

The originating terminal 10 shown in FIG. 1 may be any one of a cellular phone, a PCS phone, a PDA, a hand-held PC, and a notebook computer. In addition, the call connection request method by the string dialing of the present invention is not limited to a wireless communication terminal, but may be applied to a general PC capable of VoIP (Voice over Internet Protocol) communication, and also to a wired telephone receiving communication service through a wired telephone network. Can be applied. In this case, the string call processing program described above should be installed in the PC or the landline phone.

Next, a call processing method at the originating exchange 26 will be described with reference to FIGS. 9 and 10.

When the originating terminal 10 requests a radio access assignment to the base station 22 by attempting a call connection request (step 300), the base station 22 allocates radio resources to the originating terminal 10 in response. (Step 302). At this time, when the caller requests a radio resource assignment in step 300, the caller terminal 10 includes a string of numbers converted from the caller's input string as a caller identification code. The message is sent with the dialing identifier included. In step 304, the base station 22 requests wired resource allocation to the SSP 28 of the originating exchange 26. In response to the wired resource allocation request, the SSP 28 of the originating exchange 26 allocates the wired resource to the corresponding base station 22 (step 306).

In the SSP 28 of the originating exchange 26, a trigger point for detecting a string dialing identifier that may be included in the call connection request message is set. When the trigger point is detected in step 308, the SSP 28 determines the originator MIN. The service identification is requested by providing the SCP 30 with trigger identification information indicating character string dialing together with the number and called party identification code (step 310). The SCP 30 converts the called party identification code included in the service processing request, that is, the string of numbers, into a string inputted by the caller into the terminal 10 at the time of dialing using the lookup table of FIG. 3 (step 312). Subsequently, SCP 30 checks the called party's telephone number, that is, the MIN number or the wired telephone number, which the called party registered in advance in the string database of FIG. 4 (step 314). In step 316, SCP 30 provides the called party's telephone number to the SSP 28 in response to the service processing request in step 310, so that the SSP 28 can continue the call progress.

Hereinafter, in the description of steps 318 to 332, it is assumed that the called terminal is a wireless terminal which receives a service through the same network as the calling terminal 10. However, those skilled in the art to which the present invention pertains are similarly applicable to the case in which the illustrated call processing method is not limited thereto, but is also a case where the called terminal is a wireless terminal belonging to another wireless telephone network or a wired telephone receiving a service through a wired communication network. I can understand that.

In step 318, the SSP 28 of the originating exchange 26 requests the recipient location information from the HLR 34. In response to this request, the HLR 34 requests routing information from the destination exchange 36 corresponding to the destination terminal 50. The destination exchange 36 responds to the request of the HLR 34 with routing information including the Temporary Local Directory Number (TLDN). Here, the TLDN is an identifier temporarily assigned to the called terminal during call setup. In step 320, the HLR 34 responds to the SSP 28 of the originating exchange 26 with the called location information including routing information.

When the terminating terminal 50 is powered off or busy, the originating exchange 26 will provide a guide message or a corresponding tone to the originating terminal 10. However, when the terminating terminal 50 is powered on and not in a call, the originating exchange 26 attempts an ISUP call by sending an initial address message (IAM) to the terminating exchange 36 based on the terminating location information. (Step 322). In response, the destination exchange 36 sends an address termination message (ACM) to the SSP 28 of the originating exchange 26 (step 324).

Subsequently, the destination exchange 36 causes the ringback tone to be reproduced at the originating terminal 10 via the originating exchange 26 through the ringback tone signal (step 326), and performs paging to the called terminal 50. (Step 328). When the called terminal 50 responds to the paging (step 330), the called exchange 36 checks the called party identification information included in the response message, and then transmits a response message (ANM) to the calling exchange 26, and sends the call. By forming a call path between the exchange 26 and the called terminal 50, the calling terminal 10 and the called terminal 50 can transmit and receive a call message (step 332).

On the other hand, the string dialing according to the present invention can be utilized not only for voice call processing but also for short message transmission. 11 shows a process of transmitting a short message by string dialing.

When the short message is to be transmitted by string dialing, the sender selects a text message transmission menu at the calling terminal 10, enters a message, and then inputs a called party identifier. Instead of entering a telephone number as the called party identifier, After entering the string dialing mode, the user enters a string representing the called party. After entering the recipient display string and pressing the transmit key, the string call processing program assigns each character constituting the recipient display string to a plurality of numbers according to the number-character arrangement rule determined on the keypad, that is, according to the lookup table of FIG. Convert to Subsequently, the terminal 10 transmits the short message to the originating exchange 26 through the base stations 22 and 24 by including the numeric string converted with the character string as the called party identification code and adding the character dialing identifier (step 400). ).

In step 402, the originating exchange 26 requests the short message to be sent to the calling SMSC 42. The originating SMSC 42 sends a response message to the originating exchange 26 (step 404), and in response, the originating exchange 26 sends the response message to the originating terminal 10 via the base stations 24 and 22. FIG. Transmit (step 406).

When the calling SMSC 42 detects the string dialing identifier in the short message transmission request message (step 408), the calling party SMSC 42 provides the called party identification code, that is, a string of numbers, to the SCP 30 or a separate conversion server to translate the called party number A request is made (step 410). The conversion server converts the string of numbers into a string that the caller input into the terminal 10 at the time of dialing by using the lookup table of FIG. 3, and checks the called party's telephone number registered in advance by the receiver for the string in the string database. In operation 412, the called party's telephone number is provided to the calling party's SMSC 42. Upon receiving the called party's phone number, the calling party SMSC 42 includes the received phone number in the short message and sends a short message request to the called party's SMSC 44 (step 414). After the called party SMSC 36 responds to the request for transmission (step 416), it transmits a short message to the destination terminal 50 through steps 418 to 424.

In FIG. 11, there are two SMSCs involved in the transmission of the short message. However, it is also possible for the calling SMSC 42 to transmit the short message to the destination terminal 50 through the destination exchange 36. In addition, the short message process illustrated in FIG. 11 may be similarly applied to a long message service (LMS), a multimedia messaging service (MMS), and a unified messaging service (UMS). have. In the following description and claims, the term "text message" is used to include all types of messages transmitted through such a messaging service.

On the other hand, the string dialing according to the present invention can be used for wireless Internet navigation in addition to voice call processing and short message transmission. In order to allow a wireless Internet user to access a wireless Internet page by a string, the wireless Internet content provider (CP) or a separate wireless internet server operator may send a text registration server 60 to the string registration server 60 through a process similar to that shown in FIG. You can register the page you provide and the string to use to specify this page. The string registration server 60 stores the wireless Internet connection string registered by the user in the form illustrated in FIG. 12 and provides the string to the WAP gateway server 40 so that the WAP gateway server 40 stores the information in the database. To handle connection request by string dialing. Even in this case, the character string registration can be performed via the wired internet or the wireless internet.

In the state where the character string is registered as described above, the wireless Internet user can input the character string registered in advance for the WAP page to which he / she wants to access on his terminal 10 to request the wireless Internet access, and the call exchanger 26 And the WAP gateway server 40 perform the corresponding processing so that the calling terminal 10 can directly access the corresponding page. FIG. 13 schematically illustrates a wireless internet access request and a process by string dialing according to the present invention.

When the terminal user presses a specific key or key combination while the calling terminal 10 is in the idle screen or connected to the wireless Internet, the terminal enters a string dialing mode. When the user inputs a pre-registered character string for the content page to be accessed in the character string dialing mode and presses the access key (steps 500 and 502), the string call processing program uses the character string input by the user as a string of numbers. In step 504, a sequence string and a text dialing identifier are added to transmit an access request message to the originating exchange 26 through the base stations 22 and 24 of the wireless telephone network (step 506). The originating exchange 26 establishes a call path between the originating terminal 10 and the WAP gateway server 40 for the wireless Internet access call.

Upon receiving the access request message, the WAP gateway server 40 checks whether the string dialing identifier is included in the message (step 510). In the preferred embodiment, the WAP gateway server 40 has its own lookup table of FIG. 3 and string table of FIG. If it is determined in step 510 that the access request message includes the string dialing identifier, the WAP gateway server 40 may check the lookup table of FIG. 3 and the string table of FIG. 12 from the numeric string inserted as the caller identification code in the message. After confirming the incoming URL from the server, the calling terminal 10 accesses the corresponding content page by redirecting the call to the destination URL (steps 512 and 514).

According to such an embodiment, the WAP gateway server 40 may perform keyword marketing that receives registration of character strings in the form of a flat fee or in the form of a pay-as-you-go fee to differentiate rates based on connection.

In the above description, the SCP 28 of the originating exchange 26 directly includes and maintains the numeric-character arrangement rule lookup table of FIG. 3 and the string database of FIG. The information is converted to the called party's telephone number with reference to the information, and this called party identification number is provided to the SSP 28 so that the SSP 28 can continue the call progress. However, in another embodiment of the present invention, the number-letter arrangement lookup table and string database may be operated by a separate intelligent peripheral (IP). 14 shows such an embodiment.

In the embodiment of FIG. 14, IP 527 stores a numeric-letter sequence lookup table having a structure similar to that shown in FIG. In addition, the IP 527 receives the string information registered by the user in the string registration server 60 through the wired / wireless Internet from the string registration server 60 and stores it in the string database having a structure similar to that shown in FIG. In this state, when the SSP 528 of the originating exchange 526 detects the string dialing trigger point and transmits a trigger signal to the SCP 530 together with the calling party MIN number and the called party code, the SCP 530 receives an IP 527. ) To request the called party's phone number by providing the calling party's MIN number and called party code, and the IP 527 responds to provide the called party's phone number to SCP 530, and SCP 530 sends this called party identification number to the SSP ( 528 to cause the SSP 528 to continue the call progress.

Meanwhile, in another embodiment of the present invention in which this embodiment is modified, the IP may be connected to the SSP instead of the SCP. 15 shows such an embodiment. In the embodiment of FIG. 15, when the SSP 628 of the originating exchange 626 detects the string dialing trigger point and sends a trigger signal to the SCP 630, the SCP 630 determines that the SSP 628 is an IP 627. )). When the SSP 628 connects and provides the calling party MIN number and the called party code, the IP 627 refers to the numeric-character arrangement lookup table and the string database to convert the called party code into the called party number and then to the SSP 528. SSP 528 uses this number to continue the call progress.

Those skilled in the art to which the present invention pertains will understand that the present invention may be embodied in other specific forms without changing the technical spirit or essential features.

On the other hand, in the above description, it has been described that keyword marketing can be carried out for registration of character strings in the form of a flat rate only or in the form of a pay-as-you-go rate scheme for different rates according to the connection. The same can be applied to. For example, in the character string database of FIG. 4, as in FIG. 12, the telecommunications carrier or its agent may use a general word (for example, words such as "flower", "flower delivery", "moving", "moving"). Recruitment of operators who want to register the called party number for the character string, it is possible to collect the usage fee from each operator in the form of a pay-per-click system, that is, CPC (Cost Per Call) to differentiate the rate according to the number of string access. When the call exchange request message includes the string dialing identifier in the call connection request message, the call exchanger 26 connects the connection request to the called party number corresponding to the string, so that the caller of the service provider 10 contracts to use the string. To be connected.

On the other hand, in the above description, the character string call processing program converts the character string input by the user into a string of numbers according to the number-character arrangement rule on the keypad. However, in the modified embodiment, the character string call processing program is used. RAM may convert strings to numeric strings according to standardized Korean code systems, such as complete or combined.

In addition, according to another embodiment of the present invention, the string call processing program may convert a string into a string using a mapping table in which mapping numbers are recorded corresponding to each of N target characters.

16 is a diagram illustrating a mapping table in which a target character and a mapping number are recorded according to another embodiment of the present invention.

The mapping table 1600 shown in FIG. 16 may be recorded in the memory means of the exchanges 26 and 36, respectively in a predetermined application form in the memory means of one or more client terminals using the string call processing service of the present invention. Can be.

In the mapping table 1600, at least one target character and a mapping number corresponding to each target character are recorded. The target character may include all kinds of letters, numbers, various symbols and the like, such as Korean, English, numbers, and symbols. In addition, the target character may be composed of syllable units, that is, one letter, number, and symbol unit.

The mapping number may include a number from 1 to N according to the number of the target characters. For example, when the total number of the target characters is 2400, the mapping number may include a total of 2400 numbers from 0 to 2399, and the numbers may be recorded corresponding to the respective target characters in order. Can be.

In general, Hangul may include up to 2350 characters, and English may include 26 characters. That is, in the case of Hangul, 2,350 letters (syllable units) may be generated by combining all consonants and vowels such as "ga, b, da, la, ... 컥, cook". In the case of English, since the number of the alphabet is 26, it may include the number of 26 syllable units.

As described above, the number of all characters that can be input through the general terminal may be determined as 2400 characters including 2350 Korean characters and 26 English characters and various numbers and symbols. In FIG. 16, a mapping table 1600 in which a total of 2400 target characters and mapping numbers correspond to each other is recorded as an example.

As illustrated in the mapping table 1600, the mapping number "1" may be mapped to the target character "A", and the mapping number "50" may be mapped and recorded on the target character "A". In addition, the mapping number "2400" may be mapped to the target letter "k".

According to a preferred embodiment of the present invention, a mapping number having a small digit corresponds to a target character that is expected to be frequently used as described above, and a mapping number having a large digit is assigned to a target character that is not expected to be frequently used. Can match. By differentiating the digits of the mapping number according to the expected frequency of use as described above, it is possible to prevent the overload of the system according to various operations, and to reduce the capacity of frequently transmitted data.

Also, for each of the N target characters recorded in the mapping table 1400, a frequency of reading a mapping number corresponding to each target character for a predetermined period of time is read, and a read probability of each target character is read according to the read frequency. Can be calculated. The correspondence between the target character of the mapping table 1600 and the mapping number may be updated by associating mapping numbers from 1 to N to each target character in order of the calculated read probability.

Therefore, by mapping a small number of mapping numbers to frequently used target characters, the effect of coding with a more effective compression algorithm can be obtained. The correspondence update between the target character of the mapping table 1600 and the mapping number, such as the calculation of the read probability, may be implemented using a Huhffman coding scheme.

17 is a diagram illustrating a called party database in which a called party string and a called number are recorded according to another embodiment of the present invention.

At least one called party string and a corresponding called number may be recorded in the called number database 1700, respectively. The called party string may be set to be the same as the string input through the calling terminal when the calling terminal user uses the string call processing service according to the present invention.

The called number may be crumpled by the terminal number of the user who inputs the called party string. That is, the terminal number of the user corresponding to the called party string "Sophia" may be "010-111-1111", and the terminal number of the user corresponding to the called party string "JAYAYA" may be "011-9085-7821".

The called party string may be input from the user's terminal through the wireless communication network 20 or the Internet. The called number database 1700 may be configured to be included in the exchanges 26 and 36, or may be configured independently from the outside separately from the exchanges 26 and 36. In addition, the called number database 1700 may be configured in the same manner as the character string database shown in FIG. 3B.

Hereinafter, a call connection control of a switching system including a mapping table 1600 shown in FIG. 16 and a called number database 1700 shown in FIG. 17 according to another embodiment of the present invention with reference to FIGS. 18 to 20. Explain how.

17 is a flowchart illustrating the flow of a method for controlling a call connection of a switching system according to another embodiment of the present invention.

According to another embodiment of the present invention, the originating terminal and the switching system maintain the same mapping table respectively (step 1811, step 1817). In addition, the exchange system maintains a called party database in which the called party string and the called number respectively input from the user are recorded (step 1818).

The target character and the mapping number recorded in the mapping table are the same, and the correspondence between the target character and the mapping number is also the same. In addition, the number of the target character and the mapping number recorded in the mapping table will be described with an example of 2500 each.

The originating terminal receives a predetermined string from the originating user (step 1812). For example, the character string "I love you" may be input from the calling user.

The calling terminal reads out the mapping number corresponding to the received character string by referring to the mapping table recorded in a predetermined memory means (step 1813). That is, a target character identical to each character included in the character string may be identified with reference to the mapping table, and a mapping number corresponding to the identified target character may be read. In the above example, in the received string "I love you", mapping number "10" corresponding to the target character "Sa", mapping number "8" corresponding to "Rang", and mapping number corresponding to "Sea" 5 "may be read from the mapping table, respectively.

The calling terminal combines the read mapping numbers in the string order to generate an N-decimal numeric string (step 1814). In the above example, a mapping number corresponding to each character of the character string "I love you" may be combined in the order of the character string to generate an N-decimal numeric string "1085". In the present exemplary embodiment, since 2500 target characters and mapping numbers are recorded in the mapping table as an example, the "1085" may be implemented as a 2500 decimal numeric string.

The calling terminal converts the generated N-decimal number string into a decimal number string (step 1815). In the above example, the 2500 decimal numeric string "1085" can be converted into a decimal numeric string. That is, the 2500 decimal numeric string "1085" may be converted into a decimal numeric string "62520005" through the expression "10 * 2500 ² + 8 * 2500 ¹ + 5 * 2500 ⁰ ".

The originating terminal transmits a call connection request message including the converted decimal number string and a character dialing identifier representing a string call processing service according to the present invention (step 1816). The call connection request message may be implemented as a DTMF (Dual Tone Multi-Frequency) signal.

The switching system receives the call connection request message from the originating terminal (step 1819). The switching system reads whether the received call connection request message includes the text dialing identifier (step 1820).

When the call connection request message does not include the text dialing identifier in step 1820, the switching system may control the connection according to a general call processing process.

In step 1820, if the call connection request message includes the text dialing identifier, the exchange system reads a predetermined sequence of numbers from the call connection request message (step 1822). In the above example, the decimal number string “62520005” generated by the originating terminal may be read from the call connection request message.

The exchange system converts the read numeric string into an N decimal number to generate a first N-decimal numeric string (step 1823). That is, in the above example, the exchange system may generate the first 2500 decimal numeric string "1085" by converting the decimal string "62520005" which is a decimal number into 2500 decimal.

The exchange system reads one or more N-decimal digits corresponding to each digit of the generated first N-decimal digit string in descending order, respectively, and refers to the read one or more N-decimal digits with reference to the mapping number of the mapping table. A corresponding one or more target characters are read, and the read target characters are arranged in the descending order to generate a first string (step 1824).

In the above example, the exchange system reads the 2500 decimal digits corresponding to each digit of the 2500 decimal notation from the generated first 2500 decimal digit number. That is, it is possible to read "10" as the number corresponding to 2500 ^two digits, "8" as the number corresponding to 2500 ^one digit, and to read "5" as the number corresponding to 2500 ^zero digit, respectively. have. The exchange system can read the number corresponding to each digit in the order of 10, 8, 5 in descending order.

The exchange system reads the target character corresponding to each of 10, 8, and 5 by referring to the mapping table. That is, the corresponding character "four" corresponding to the mapping number "10", the corresponding character "lang" corresponding to the mapping number "8", and the target character "solution" corresponding to the mapping number "5" may be respectively read. .

The exchange system may generate the first character string “love” by arranging each of the read target characters in the descending order. The generated first string is the same as the string that the calling terminal receives from the calling user.

The exchange system reads the called number corresponding to the generated first string by referring to the called party string of the called number database (step 1825). In the above example, the called number " 011-9085-7821 " corresponding to the generated first character string " loved sea " can be read from the called number database.

The switching system may control a call connection of the calling terminal according to the read called number. That is, in the above example, the call connection between the calling terminal and the called terminal corresponding to the called number of "011-9085-7821" can be controlled.

FIG. 19 is a flowchart illustrating a method for generating a second string of numbers of a calling terminal according to another embodiment of the present invention when the number of characters of a string input by a user is greater than or equal to a predetermined value.

According to another embodiment of the present invention, when the number of characters of the input string is M, the number string may have K digits satisfying 10 ^K or more than N ^M, which is a value obtained by multiplying the number N of the mapping characters. .

For example, when 2350 Korean characters, 26 English characters, 10 numbers, and various symbols are set as target characters, the number may be 2400. As such, when 2400 target characters are used and the number of characters input from the user is 7, the number of 7-digit combinations of the 2400 target characters may be 2400 ⁷ = 458647142400000000000000. Since 458647142400000000000000 is a total of 24 digits, it is less than 10 ²⁶ .

Therefore, all the strings that can form 2400 target characters in seven digits have the number of cases smaller than 10 ²⁶ , and therefore all of them can be matched with decimal numbers from 1 to 10 ²⁶ . That is, when the string is converted to the first string of numbers, the first string of numbers may have a maximum of 26 digits.

As described above, when the number of characters in the string is set to seven and the number of digits in the first numeric string is set to 26, if the number of the strings received from the user exceeds seven, the calling terminal has a hash function built in the terminal. The excess characters can be converted into a predetermined hashing number using.

For example, when an 8-digit string is input from the user, the calling terminal converts up to 6 characters into a string of numbers by referring to the mapping table as above, and uses the hash function for the remaining 2 characters. To generate a predetermined hashing number.

In this case, when the 6-digit character is converted to a string of numbers, 2400 ⁶ = 191102976000000000000, and thus may be represented by a maximum of 21 digits. In addition, the hashing number may be generally implemented as a 5-digit number. Therefore, even when an 8-digit string is input from the user as described above, a total of 26 digits can be configured by adding 21 digits of mapping strings and 5 digits of hashing numbers, and thus increasing computation time according to the increase in the number of digits. Or system overload can be prevented.

Referring to FIG. 19, the calling terminal reads the number of characters of a character string input from a user (step 1911). If the number of characters read is less than or equal to K (step 1912), the calling terminal converts the string into a number string according to the method of generating a number string according to FIG. 18 (step 1913).

In step 1912, if the number of characters read exceeds K, a mapping number corresponding to K-1 characters is read out from the mapping table (step 1914). The K-1 characters may include characters from the first digit to the K-1 digit of the string. For example, when the received character is a total of 8 character strings of "Wyder Dan Co., Ltd.", the mapping number corresponding to each character of "Wyder Dan Stock", which is up to 6 characters, may be read from the mapping table.

The originating terminal generates a second N-decimal numeric string from the read mapping number (step 1915). The method of generating the second N-numbered numeric string may be implemented in the same manner as the method of generating the N-numbered numeric string described with reference to FIG. 18. In the above example, 1,2,3,4,5,6 may be read as a mapping number corresponding to "Wider Dan's stock" to generate a second N-decimal numeric string "12345".

The calling terminal converts the generated second N-decimal number string into a decimal number to generate a second decimal number string (step 1916). In the above example, when the second N-decimal number string “12345” is converted into 2400 decimal numbers, a total of 12 digits of the second 2400 decimal number strings of “999999999999” may be generated. In the present embodiment, the calling terminal may configure the second 2400 decimal numeric string as a total of 21 digit numeric strings. That is, by inserting 0 at the beginning of the numeric string, a 21 digit second 2400 binary numeric string of "000000000999999999999" can be generated.

The calling terminal extracts each character after the Kth digit of the input string, and converts the extracted one or more characters into a predetermined hashing number using a hash function built in the calling terminal (step 1917). . In the above example, the calling terminal extracts the characters "time" and "four" which are seven characters after the string, and converts the "company" into a five-digit hashing number "55555" using the hash function. Can be.

The originating terminal generates a second numeric string by combining the generated second decimal numeric string and the hashing number in the string order (step 1918). In the above example, the calling terminal combines the generated second decimal number string "00000000099999999999" and the generated hashing number "55555" in the order of a string to represent a total of 26 decimal digits "00000000099999999999955555". You can create two strings of numbers.

The originating terminal may transmit a call connection request message including a second character dialing identifier including the generated second numeric string and information indicating that the number of characters of the character string received from the user exceeds 7 ( Step (1919)).

As described above, even when the number of strings input from the user is more than K, the strings may be generated by converting the strings into numeric strings using the hash function built in the terminal, thereby generating a numeric string not exceeding a predetermined number of digits.

20 is a flowchart illustrating a call connection control method of a switching system receiving a call connection request message including a second string of numbers having a number of characters of a character string input by a user according to another embodiment of the present invention. Drawing.

The call connection control method of the switching system according to FIG. 20 is characterized in that the call connection request message including the second string of characters and the second character dialing identifier generated by the calling terminal according to FIG. 19 is received.

The switching system receives a predetermined call connection request message from the calling terminal (step 2011). The switching system reads whether the received call connection request message includes a second character dialing identifier (step 2012), and if the second character dialing identifier is not included, the switching system reads the message. The numeric string included in the call connection request message may be converted into a string according to the string conversion method described with reference to FIG. 18.

In step 2012, if the call connection request message includes the second character dialing identifier, the switching system reads a second sequence of numbers from the call connection request message, and the last five digits of the second sequence of numbers. The number is converted into a third string through a hash function (step 2014).

For example, the exchange system described with reference to FIG. 19 may convert “55555”, which is the last five digits of the second numeric string “00000000099999999999955555”, into a third character string “company” through a hash function. The number / character correspondence of the hash function is identical to the number / character correspondence of the hash function built in the calling terminal.

The calling terminal generates a second string by converting the remaining numeric string except for the last five digits of the second numeric string to N-number. In the above example, the exchange system may convert the string "000000000999999999999" excluding the last five digit string "55555" into 2400 digits to generate a second string of "Wider Dan's formula".

The exchange system generates the first string by combining the generated second string and the third string in order (step 2016). In the above example, the exchange system may combine the second string "Wider Dan Stock" and the third string "Company" in order to generate a first string "Wider Dan Stock Company".

The exchange system reads the called number corresponding to the first string generated by referring to the called number database (step 2017), and controls the call connection of the calling terminal according to the read called number (step). (2018)). In this example, the switching system reads the called number " 02-223-4567 " corresponding to the first character string, and establishes a call connection between the called terminal and the calling terminal corresponding to the " 02-223-4567 ". Can be controlled.

The string conversion method according to another embodiment of the present invention described with reference to FIGS. 16 to 20 may be applied to all call processing methods suitable for string dialing according to the wireless communication system described with reference to FIGS. 1 to 15. That is, in the present invention, the string input by the user may be converted into a string of numbers according to the number-character arrangement rule of the calling terminal. As described with reference to FIGS. 16 to 20, the user may refer to the mapping table 1600. You can also convert the entered string to a string of numbers. All call processing methods except the string conversion method of the string may be applied in the same manner.

In the description of Figs. 16 to 20, the exchange system maintains the mapping table 1600 and the called party database 1700, converts the information string transmitted from the calling terminal into the called party number, and converts the called party number. It is described as processing a call connection request. However, in another embodiment of the present invention, the mapping table and the called number database may be operated by separate intelligent peripherals (IP) as described in FIG. 14.

As described above, according to the present invention, the telephone user can input the name of the counterpart to whom he / she wants to call in the form of a string, and immediately request a call origination to the switching system, and the switching system thus connects the call by string dialing. You can call on request.

Accordingly, even if the caller does not know the other party's telephone number, the caller can easily make a call, send a text, or access a site by inputting the character string.

In addition, the WAP gateway server operator can realize additional revenue by providing a service that registers a string that is likely to be commonly used by everyone at an advertiser's request.

In addition, according to the present invention, the exchange system by converting the character string input by the caller to a predetermined sequence of strings with reference to the mapping table in which the mapping number corresponding to each character that the caller can input through the calling terminal is recorded; By transmitting to the call, there is an effect that can make a more efficient call request.

Claims (15)

In a switching system that mediates a call connection between a calling terminal and a called terminal, (a) storing corresponding information of the substitute identifier designated by the called terminal user and the called terminal telephone number in predetermined storage means; (b) receiving a call connection request message from the calling terminal; (c) determining whether the call connection request message includes a predetermined text dialing identifier; (d) when the call connection request message includes the text dialing identifier, reading the called terminal number from the storage means by using called party identification information included in the call connection request message; And (e) establishing a call path between the calling terminal and the called terminal; Call processing method comprising a. The method of claim 1, In the step (a), the alternative identifier and the called telephone number, which are strings, are stored in a string table of the storage means, and a string representation of the strings according to an alphanumeric correspondence rule on the keypad for each terminal is stored. Stored in the lookup table of the storage means, In the step (b), accepting the call connection request message containing the called party identification information in the form of the numeric string representation of the substitute identifier according to the alpha-numeric correspondence rule of the calling terminal, In the step (d), the called party identification information in the form of the numeric string representation of the replacement identifier is converted into the string replacement identifier by referring to the lookup table, and the character string replacement identifier is converted from the string table using the string replacement identifier. A call processing method for reading a called terminal number. The method of claim 1, In the step (a), the numeric string representation of the substitute identifier and the called telephone number of the substitute identifier is stored in a string table of the storage means, In the step (d), the call processing method for reading the called terminal number from the character string table using the called party identification code in the numeric string. In the text message transmission system for transmitting a text message requesting the transmission terminal to the called terminal, (a) storing corresponding information of the substitute identifier designated by the called terminal user and the called terminal telephone number in predetermined storage means; (b) receiving a text message transmission request message from the calling terminal; determining whether the text message transmission request message includes a predetermined text dialing identifier; (d) if the text message transmission request message includes the text dialing identifier, reading the called terminal number from the storage means by using called party identification information included in the text message transmission request message; And (e) transmitting the text message to a called terminal; Text message transmission method comprising a. The method of claim 4, wherein In the step (a), the alternative identifier and the called telephone number, which are strings, are stored in a string table of the storage means, and a string representation of the strings according to an alphanumeric correspondence rule on the keypad for each terminal is stored. Stored in the lookup table of the storage means, In the step (b), accepts the text message transmission request message including the called party identification information in the form of the numeric string representation of the substitute identifier according to the alpha-numeric correspondence rule of the calling terminal, In the step (d), the called party identification information in the form of the numeric string representation of the replacement identifier is converted into the string replacement identifier by referring to the lookup table, and the character string replacement identifier is converted from the string table using the string replacement identifier. Sending text message to read the terminal number. The method of claim 4, wherein In the step (a), the numeric string representation of the substitute identifier and the called telephone number of the substitute identifier is stored in a string table of the storage means, In the step (d), using the called party identification code of the numeric string to read the called terminal number from the text table. A system for mediating a terminal to access a resource on a wireless Internet based on a wireless network, (a) storing, in a predetermined storage means, a substitute resource identifier assigned in place of the resource identifier of the resource and corresponding information of the resource identifier; (b) receiving a connection request message from the terminal; determining whether the connection request message includes a predetermined text dialing identifier; (d) if the text dialing identifier is included in the access request message, reading the resource identifier from the storage means by using the resource identification information included in the access request message; And (e) redirecting the connection of the terminal to the resource so that the terminal accesses the resource; Wireless Internet access mediating method comprising a. The method of claim 7, wherein In step (a), the substitute resource identifier and the resource identifier, which are strings, are stored in a string table of the storage means, and a string representation of the strings according to an alphanumeric correspondence rule on the keypad for each terminal is represented. Stored in the lookup table of the storage means, In the step (b), accepting the connection request message including the resource identification information in the form of the numeric string representation of the alternative resource identifier according to the alpha-numeric correspondence rule of the terminal, In the step (d), the resource identification information in the form of the numeric string representation of the replacement resource identifier is converted into the replacement resource identifier with reference to the lookup table, and is converted from the string table using the replacement resource identifier. A wireless Internet connection mediating method for reading the resource identifier. The method of claim 7, wherein In step (a), storing the string representation of the substitute resource identifier and the resource identifier in the character string table of the storage means, In the step (d), using the resource identification code of the numeric string to read the resource identifier from the string table. In the call connection control method of the switching system, Maintaining a mapping table in which mapping numbers are recorded corresponding to N target characters and each of the target characters, wherein the mapping numbers are N-decimal digits including numbers from 1 to N; Maintaining a called party number database in which at least one called party string and a called number corresponding to each of the called party strings are recorded; Receiving a call connection request message from a predetermined calling terminal; Determining whether the call connection request message includes a predetermined text dialing identifier; If the call connection request message includes the text dialing identifier, reading a predetermined sequence of numbers from the call connection request message; Generating a first N-decimal numeric string by converting the read numeric string into an N-number; Read one or more N-number numbers corresponding to each digit of the first N-number string in descending order, and refer to one or more target characters corresponding to the read one or more N-number numbers with reference to the mapping number of the mapping table. Reading and arranging the read target character in the descending order to generate a first character string; Reading a called number corresponding to the first string by referring to a called character string of the called number database; And Controlling a call connection of the calling terminal according to the called number Including, The calling terminal converts the string input from the calling user into the string of numbers, and transmits the call connection request message including the string of numbers and the text dialing identifier to the switching system. Control method. The method of claim 10, The calling terminal maintains the mapping table in a predetermined memory means, receives the string from the calling user, reads one or more mapping numbers corresponding to the string by referring to a target character of the mapping table, A call of the exchange system, comprising combining N or more mapping numbers in the order of the strings to generate an N-numbered numeric string, and transmitting the numeric string converted from the N-numbered numeric string to decimal in the form of DTMF to the switching system. Connection control method. The method of claim 11, The number string has K digits satisfying 10 ^K or more than N ^M, which is a value obtained by multiplying the number N of the mapping characters by M, when the number of characters of the input character string is M. . The method of claim 12, Reading the number of characters of the received character string; If the number of characters is larger than K, one or more mapping numbers corresponding to each of the extracted K-1 characters are extracted by referring to K-1 characters included in the character string in order and referring to a target character of the mapping table. Reading out; Combining the read one or more mapping numbers in the string order to generate a second N-decimal number string; Generating a second decimal number string by converting the second N-number string to a decimal number; Extracting Kth or later characters from the character string and generating a predetermined hashing number corresponding to the extracted Kth or later characters by using a hash function built in the calling terminal; Generating a second numeric string by combining the second decimal numeric string and the hashing number in the string order; Sending a call connection request message including the second string of numbers and a second character dialing identifier to the switching system; More, And the second string of numbers has the K digits and the hashing number has the last five digits of the second string of numbers. The method of claim 13, When the switching system extracts the second character dialing identifier from the call connection request message received from the originating terminal, the last five digits of the second string of numbers are converted to a third value using a hash function built into the switching system. Converts to a character string, except for the last five digits, converts to N-number, reads a target character corresponding to each N-decimal number from the mapping table, and generates a second string; And a first string is generated by combining the three strings in order. The method of claim 10, Reading the frequency with which the mapping number corresponding to each target character is read out for each of the N target characters recorded in the mapping table for a predetermined period of time; Calculating a read probability of each target character according to the read frequency; And Updating the mapping table by associating mapping numbers from 1 to N to each target character in order of the calculated read probability. Call connection control method of the exchange system further comprising.

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