KR20050035728A - Method of transferring ums message using personal number - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to an integrated messaging service message delivery method using a lifetime number and a computer-readable recording medium recording a program for realizing the method.

2. The technical problem to be solved by the invention

The present invention solves the limitation of the message delivery method and terminal location using the lifetime number in delivering the UMS message, and also integrates using the lifetime number to provide UMS as an additional service for the lifetime number service, which is an intelligent network service. A messaging service message delivery method and a computer readable recording medium having recorded thereon a program for realizing the method.

3. Summary of the Solution of the Invention

According to an aspect of the present invention, there is provided a method of delivering a Unified Messaging Service (UMS) message in a message delivery system, comprising: a first step in which an intelligent supplementary service device (ISN) receives a lifetime number and a message transmission type; A second step of the intelligent supplementary service device (ISN) querying the lifetime number database based on the lifetime number and analyzing the message transmission type; And the intelligent supplementary service device (ISN) extracts a first called number for the lifetime number based on the message transmission type and transmits the first called number for the lifetime number to a UMS system, whereby the UMS system sends the first called number. And sending the UMS message to a third party.

4. Important uses of the invention

The present invention is used for UMS supplementary service or lifetime number supplementary service.

Description

Integrated messaging service message delivery method using lifetime number {Method of transferring UMS message using personal number}

The present invention relates to a method of delivering a Unified Messaging Service (UMS) message using a lifetime number, and to a computer readable recording medium having recorded thereon a program for realizing the method.

In general, UMS refers to a solution in which various types of messages such as text, voice, fax, and e-mail can be stored in one logical mailbox and accessed through a telephone or a PC. Therefore, UMS integrates Fax, E-Mail, and telephone which are frequently used in work, so that the message can be checked using various media such as telephone, computer, and facsimile regardless of time and place.

As such, the UMS message delivery service delivers various types of messages such as voice, text, and facsimile to the desired number of service subscribers, but only attempts to deliver them to registered numbers. Since there is no attempt, the call completion rate is inevitably dropped, and the registrant (caller) must know the exact number according to the message type in advance. That is, a specific number such as a general telephone number, a mobile telephone number, a fax number is required according to a transmission method of voice, text, and facsimile. In addition, in the case of an emergency message, if the location of the target terminal of the delivery number is away from the called party or another person is talking to the terminal, the message may not be received.

Therefore, the UMS message delivery method requires inquiring information such as general phone number, mobile phone number and fax number for the called party in consideration of the delivery method, the location and the real-time state of the terminal, and furthermore, only the registered number is delivered. Since it attempts, if the message delivery fails, the call completion rate is greatly reduced because the message is not attempted to be delivered to another number.

However, the lifetime number service stores the information (ie, information such as a general phone number, a mobile phone number and a fax number for the called party in consideration of a delivery method, a location and a real-time state of the terminal) for the subscriber.

Therefore, Lifetime Number Service is a service that allows each individual to receive a phone number that does not change for a lifetime, so that they can receive a call on a regular or mobile phone in the region they moved to. It is divided into B type (plus type), and A type automatically connects to the 1st and 2nd number sequentially when the other party calls, and the B type guide menu when the other party calls. For example, listen to office 1, mobile 2, home 3, fax 4, etc.) to make a call. Therefore, in the life-time number subscriber DB, type 1 and 2 are registered without type of transmission type in the case of type A, and type B is classified into general telephone (home, office) number, fax number, and mobile phone number. have.

However, the lifetime number service delivers the message depending on the terminal of the sender (FAX message → FAX message, voice message → voice message). Therefore, it is impossible for a forwarder to deliver a message by changing the type of terminal. In addition, the lifetime number service is an INBOUND type service provided by subscribers directly by phone. In the case of type A, it is limited to the incoming type of voice message. In the case of type B, the message type is classified according to the message type. The caller needs to select a subscriber's call number. Therefore, a separate system implementation is required to transfer text messages from type A, or to provide outgoing type OUTBOUND type services for type A and type B, which are incoming type INBOUND type services. In addition, the lifetime number service is operated in the No. 7 network based on the PSTN network in advance, it is necessary to implement a separate system to implement the message transmission provided by the existing UMS, such as text messages.

Thus, in the current UMS message delivery method or lifetime number service method, solving the limitation problem according to the message delivery method and terminal location using the lifetime number in delivering the UMS message, and addition to the lifetime number service which is an intelligent network service By providing UMS as a service, it is essential to develop a new market for UMS providers without increasing development costs and periods, and to generate revenue by increasing lifetime number subscribers.

The present invention has been proposed to meet the above demands, and solves the problem of limiting the message delivery method and terminal location by using lifetime number in delivering UMS message, and also for lifetime number service which is an intelligent network service. It is an object of the present invention to provide a method for delivering an integrated messaging service message using a lifetime number for providing UMS as an additional service, and a computer-readable recording medium recording a program for realizing the method.

According to an aspect of the present invention, there is provided a Unified Messaging Service (UMS) message delivery method in a message delivery system, comprising: a first step in which an intelligent supplementary service device (ISN) receives a lifetime number and a message transmission type; A second step of the intelligent supplementary service device (ISN) querying the lifetime number database based on the lifetime number and analyzing the message transmission type; And the intelligent supplementary service device (ISN) extracts a first called number for the lifetime number based on the message transmission type and transmits the first called number for the lifetime number to a UMS system, whereby the UMS system sends the first called number. And a third step of transmitting the UMS message.

In addition, the present invention, if the message transmission failure, the intelligent additional service device (ISN) according to the retransmission request of the UMS system based on the message transmission type retransmission request, retransmission number, lifetime number according to the service number And extracting a second called number for the second called number and transmitting the same to the UMS system, thereby allowing the UMS system to send the UMS message to the second called number.

In addition, the present invention provides a Unified Messaging Service (UMS) message delivery method in a message delivery system, comprising: a first step in which a UMS system receives a lifetime number and a UMS message; Transmitting, by the UMS system, the lifetime number and transmission type of the message to an intelligent supplementary service device (ISN); A third step of the intelligent additional service device (ISN) querying the lifetime number database based on the lifetime number and analyzing a message transmission type; A fourth step of extracting a first called number for the lifetime number according to the lifetime number service type based on the message transmission type and transmitting the extracted first called number to the UMS system; And a fifth step of transmitting, by the UMS system, the UMS message to the first called number.

In addition, the present invention is the sixth step of the UMS system requesting a delivery number (called number) for retransmission of the message to the intelligent additional service device (ISN), when the message transmission fails; A seventh step of the intelligent additional service device (ISN) querying the lifetime number database based on the lifetime number and analyzing the message transmission type; An eighth step of the intelligent additional service device (ISN) extracting a second called number for the lifetime number according to the retransmission request, the number of retransmissions, and the lifetime number service type based on the message transmission type and transmitting the extracted second called number to the UMS system; ; And a ninth step of causing the UMS system to transmit the UMS message to a second called number.

On the other hand, the present invention provides a message delivery system with a processor for delivering a Unified Messaging Service (UMS) message using a lifetime number, a first function for receiving an intelligent lifetime service device (ISN) input the lifetime number and message transmission type; A second function of the intelligent supplementary service device (ISN) querying the lifetime number database based on the lifetime number and analyzing the message transmission type; And the intelligent supplementary service device (ISN) extracts a first called number for the lifetime number based on the message transmission type and transmits the first called number for the lifetime number to a UMS system, whereby the UMS system sends the first called number. A computer readable recording medium having recorded thereon a program for implementing a third function of transmitting the UMS message is provided.

In addition, the present invention, if the message transmission failure, the intelligent additional service device (ISN) according to the retransmission request of the UMS system based on the message transmission type retransmission request, retransmission number, lifetime number according to the service number A computer readable recording of a program for further implementing a fourth function of causing the UMS system to transmit the UMS message to the second called number by extracting a second called number for the UMS system; Provide the medium.

In addition, the present invention provides a message delivery system having a processor for delivering a Unified Messaging Service (UMS) message using a lifetime number, the first function of which a UMS system receives a lifetime number and a UMS message; A second function of transmitting, by the UMS system, the lifetime number and a transmission type of the message to an intelligent supplementary service device (ISN); A third function of the intelligent supplementary service device (ISN) querying the lifetime number database based on the lifetime number and analyzing a message transmission type; A fourth function of extracting a first called number for the lifetime number according to the lifetime number service type based on the message transmission type and transmitting the extracted first called number to the UMS system; And a computer-readable recording medium having recorded thereon a program for implementing the fifth function of transmitting the UMS message to the first called number by the UMS system.

The present invention also provides a sixth function of requesting a delivery number (called number) for retransmitting a message to an intelligent additional service device (ISN) by the UMS system when a message transmission fails; A seventh function of the intelligent additional service device (ISN) querying the lifetime number database based on the lifetime number and analyzing the message transmission type; An eighth function of the intelligent supplementary service device (ISN) extracting a second called number for the lifetime number according to the retransmission request, the number of retransmissions, and the lifetime number service type based on the message transmission type and transmitting it to the UMS system; ; And a computer readable recording medium having recorded thereon a program for further implementing a ninth function for causing the UMS system to transmit the UMS message to a second called number.

The present invention associates a UMS with a lifetime number service, registers a plurality of numbers in one number, and delivers a UMS message to the corresponding number registered in the lifetime number according to a message type (voice, text, facsimile, etc.) If UMS message delivery fails, it tries to deliver UMS message to other number registered in lifetime number.

That is, in the present invention, when a UMS service subscriber enters a lifetime number without having to input a separate delivery number according to a message delivery method such as voice, text, and facsimile, the lifetime number information (lifetime number) Searched for other registered number information), extracts the number corresponding to the message delivery method, delivers the message, and extracts the first called number and fails to send the message if it fails when sending the message.

At this time, if the delivery number for delivering the message is a lifetime number, the UMS system queries the lifetime number DB and delivers the UMS message according to the UMS message delivery method, the physical location of the phone, and a real-time state (such as a call). Therefore, if the UMS provider accepts the lifetime number as the delivery number, in delivering the message to the lifetime number, the UMS provider requests the lifetime number DB inquiry to extract and transmit the number according to the message delivery method, and if the delivery fails, the DB By extracting and re-delivering other numbers stored in the B, it is possible to improve the message delivery success rate.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exemplary configuration diagram of a message delivery system to which the present invention is applied and shows a UMS message delivery system linked to a lifetime number service.

As shown in FIG. 1, a UMS message delivery system associated with a lifetime number service to which the present invention is applied includes an integrated messaging service (UMS) system 10 capable of transmitting various UMS messages, and a UMS system 10. Intelligent additional service device (ISN) that can be accessed and retrieves the lifetime number subscriber database 30, extracts the number (called number) according to the message delivery method requested by the UMS system 10, and delivers it to the UMS system 10 (ISN). : Intelligent Service Node (20), a lifetime number subscriber database (30) storing lifetime number subscriber information, and a public switched telephone network (PSTN) 40 for transmitting voice and FAX messages in association with the UMS system 10. And a mobile communication network 50 for transmitting voice and text messages in association with the UMS system 10.

In delivering the voice, text, and fax message requested by the subscriber, the UMS system 10 converts the actual delivery number (called number) according to the message delivery method when the delivery number is a lifetime number (ISN) 20 Request, and transmits the UMS message to the called party number through the existing interworking network (PSNT 40, mobile communication network 50, etc.) according to the message type, such as voice, text, fax.

The intelligent supplementary service device (ISN) 20 is connected to the UMS system 10 and the external network, and queries the lifetime number subscriber database 30 through the internal network, to the message delivery method requested by the UMS system 10. Extract the number according to the UMS system 10 to pass. That is, the intelligent supplementary service device 20 authenticates the requested UMS system 10 when a lifetime number inquiry request comes from the UMS system 10, and authenticates the subscriber for the lifetime number in the lifetime number subscriber database 30 after the authentication operation. After inquiring, in transmitting the request result, the called party number is selected and transmitted to the UMS system 10 according to the message delivery method, whether or not the re-delivery request is requested, the number of re-delivery, and the lifetime number service. At this time, the intelligent additional service device 20 authenticates the UMS system 10 in order to secure the lifetime number subscriber information in providing the service to the various UMS systems 10.

Then, the UMS system 10 transmits the UMS message to the called number (primary called number) received from the intelligent supplementary service device 20, and requests the intelligent supplementary service device 20 to send another called number when the transmission fails. Resend UMS message to secondary called number). For example, if the voice message fails to deliver, that is, if the lifetime number service type is basic type (A type), if the message fails to be delivered to the primary called number (transmission failure number), it attempts to re-deliver to the secondary called number. In the case of the positive type (B type), if the message fails to be delivered to the office telephone number (primary called number), the mobile phone number (second called number) and mobile phone number (third called number) are attempted to be re-delivered. Here, the intelligent supplementary service device 20 receives one call according to the message delivery method, re-delivery request, re-delivery number, and lifetime number service type for each request (first request or re-transmission request) of the UMS system 10 as described above. Select the number ((Primary Calling Number or Secondary Calling Number, or Office Phone Number (Primary Calling Number)) or Home Phone Number (Second Calling Number) or Mobile Phone Number (Primary Calling Number)). 10) as well as at least one called number (first and second called number, or office telephone number (primary called number), depending on the message delivery method, re-delivery request, re-delivery frequency and lifetime number service type, The home telephone number (secondary called number) and the mobile phone number (third called number) may be selected and transmitted to the UMS system 10 at once.

The lifetime number subscriber database 30 is a database storing lifetime number subscriber information, and the intelligent supplementary service device 20 can access the lifetime number subscriber database 30 through an internal network.

2 is a flowchart illustrating a method for delivering a Unified Messaging Service (UMS) message using a lifetime number according to the present invention.

First, in delivering the voice, text, and FAX message requested by the subscriber, the UMS system 10, when the number to be transmitted is a lifetime number (201), an intelligent additional service to obtain an actual delivery number (called number) according to the message type. The called party requests the device 20 (202). In this case, along with the lifetime number, the message delivery type, retransmission status, and the number of retransmissions are transmitted.

Thereafter, the intelligent additional service device 20 authenticates the requested UMS system 10 for the security of lifetime number subscriber information in providing the service to various UMS systems 10, and then receives the call using SQL NET. The number is extracted (203), and the extracted called number is transmitted to the UMS system 10 (204).

Then, the UMS system 10 delivers the UMS message to the received destination number and receives the delivery result.

At this time, if delivery fails, the delivery message type is searched, and if the delivery message type is a text message, the delivery result is stored and the delivery is terminated. On the other hand, if the delivery message type is a voice or FAX message, the intelligent supplementary service device 20 requests a delivery number (called number) for message re-delivery (205). At this time, the lifetime number and the type of the delivery message, whether or not the re-delivery request and the number of re-delivery. Afterwards, if the incoming number is received as the response result from the intelligent additional service device 20, the forwarded number is retransmitted to the corresponding destination number. If not, the latest delivery result is stored and the delivery of the lifetime number is terminated.

3 is a detailed flowchart illustrating a delivery number extraction process for a lifetime number in a Unified Messaging Service (UMS) message delivery method using a lifetime number according to the present invention.

First, the intelligent supplementary service device 20 queries the lifetime number subscriber database 30 according to the delivery number request of the UMS system 10 (301), and if the lifetime number type is basic type (type A), voice message and FAX. In the case of a message, it retrieves whether the request is re-delivered and the number of re-deliverys. Then, the first called number and the second called number are selected according to the re-delivery request and the number of re-delivery (302 and 304). Meanwhile, in the case of a text message, the mobile phone number of the first and second called numbers is searched and transmitted to the UMS system 10 (303). At this time, if the number of requests is exceeded or if the delivery message type is a text message or there is no mobile phone number, or in the case of the facsimile, if the called number is a mobile phone number, a message indicating that the called number was not found is transmitted to the UMS system 10.

On the other hand, if the type of lifetime number is a plus type (B type) (301), in the case of voice messages and fax messages, the forwarding number is searched in the order of office phone number, home phone number, and mobile phone number (except facsimile), and then forwarded again. According to the request and the number of re-delivery to the UMS system 10 (305,307). However, in the case of a text message, the mobile phone number is retrieved and transmitted to the UMS system 10 (306). At this time, in the plus type like the basic type, when the number of requests is exceeded or when the forwarding message type is a text message, there is no mobile phone number, or in the case of the facsimile, when the called number is a mobile phone number, the message was not found. ).

The method of the present invention as described above may be implemented as a program and stored in a computer-readable recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.).

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

As described above, the present invention enables a subscriber to deliver various types of messages to a single number, thereby delivering a message by using a lifetime number in a UMS system that delivers various messages. Even if the terminal to be physically separated from the sender or on the phone is available to be re-delivered to another number, the UMS provider can increase profits by improving the message delivery success rate, and the UMS user delivers important messages By increasing the likelihood, there is an effect that can increase the utilization rate and service satisfaction.

In addition, the present invention reduces the probability of not receiving various types of important messages coming to the lifetime number subscribers, and by providing a UMS as a supplementary service for lifetime number from the lifetime number service provider, there is no separate development cost and period It is possible to create new markets for UMS providers and generate revenue by increasing the number of lifetime subscribers.

1 is an exemplary configuration of a message delivery system to which the present invention is applied.

Figure 2 is an embodiment flow diagram for a method for delivering a Unified Messaging Service (UMS) message using a lifetime number according to the present invention.

3 is a detailed flowchart illustrating an embodiment of a delivery number extraction process for a lifetime number in a Unified Messaging Service (UMS) message delivery method using a lifetime number according to the present invention.

* Explanation of symbols on the main parts of the drawing

10: Unified Messaging Service (UMS) System 20: Intelligent Supplementary Service Device (ISN)

30: lifetime number subscriber DB 40: public switched telephone network (PSTN)

50: mobile communication network

Claims (12)

In the Unified Messaging Service (UMS) message delivery method in a message delivery system, A first step of receiving, by an intelligent supplementary service device (ISN), a lifetime number and a message transmission type; A second step of the intelligent supplementary service device (ISN) querying the lifetime number database based on the lifetime number and analyzing the message transmission type; And The intelligent additional service device (ISN) extracts the first called number for the lifetime number according to the lifetime number service type based on the message transmission type and transmits the first called number to the UMS system so that the UMS system transfers the first called number. A third step of transmitting the UMS message Integrated messaging service message delivery method using a lifetime number comprising a. The method of claim 1, If the message transmission fails, the intelligent additional service device (ISN) according to the retransmission request of the UMS system based on the message transmission type, the second call to the lifetime number according to the retransmission request, the number of retransmissions, the lifetime number service type Extracting a number and transmitting the number to the UMS system, thereby causing the UMS system to transmit the UMS message to the second called number; Integrated messaging service message delivery method using a lifetime number further including. In the Unified Messaging Service (UMS) message delivery method in a message delivery system, A first step in which the UMS system receives a lifetime number and a UMS message; Transmitting, by the UMS system, the lifetime number and transmission type of the message to an intelligent supplementary service device (ISN); A third step of the intelligent additional service device (ISN) querying the lifetime number database based on the lifetime number and analyzing a message transmission type; A fourth step of extracting a first called number for the lifetime number according to the lifetime number service type based on the message transmission type and transmitting the extracted first called number to the UMS system; And A fifth step of transmitting, by the UMS system, the UMS message to the first called number; Integrated messaging service message delivery method using a lifetime number comprising a. The method of claim 3, wherein A sixth step of requesting, by the UMS system, a delivery number (called number) for retransmitting a message to the intelligent supplementary service device (ISN) when the message transmission fails; A seventh step of the intelligent additional service device (ISN) querying the lifetime number database based on the lifetime number and analyzing the message transmission type; An eighth step of the intelligent additional service device (ISN) extracting a second called number for the lifetime number according to the retransmission request, the number of retransmissions, and the lifetime number service type based on the message transmission type and transmitting the extracted second called number to the UMS system; ; And A ninth step of causing the UMS system to transmit the UMS message to a second called number; Integrated messaging service message delivery method using a lifetime number further including. The method according to any one of claims 1 to 4, The UMS system, Before transmitting the UMS message to the lifetime number, in requesting the intelligent recipient service number for the lifetime number to the intelligent supplementary service device (ISN), the lifetime number, message transmission type, whether to send the retransmission request and the number of retransmissions Integrated messaging service message delivery method using a lifetime number, characterized in that. The method of claim 5, wherein The UMS system, After forwarding the message to the first destination number, requesting a delivery number (second destination number) for retransmission according to the delivery result, searching for a message transmission type when transmission fails, and storing the delivery result in the case of a text message. Ending the delivery, integrated messaging service message delivery method using a lifetime number, characterized in that for the voice message or facsimile message requesting the delivery number (second destination number) for the retransmission request to the intelligent additional service device (ISN) . The method according to any one of claims 1 to 4, The intelligent additional service device (ISN), In extracting the actual called number according to the message transmission type, the retransmission request, and the number of retransmissions for the lifetime number, if the service type of the lifetime number is the basic type, the voice message and the facsimile message are searched for the retransmission request and the number of retransmissions. And, depending on whether or not re-transmission request, select the primary or secondary destination number, and in the case of text messages, the mobile phone number of the first and second destination number is searched and transmitted to the UMS system, but the number of requests is exceeded or the message If the transmission type is a text message, there is no mobile phone number, or in the case of a fax message, if the called number is a mobile phone number, the integrated messaging service message using a lifetime number, characterized in that a message that the caller could not be found is delivered to the UMS system. Delivery method. The method according to any one of claims 1 to 4, The intelligent additional service device (ISN), In extracting the actual called number according to the message transmission type, retransmission request, and the number of retransmissions for the lifetime number, when the service type of the lifetime number is a plus type, the office telephone number and the home telephone number in the case of voice message and facsimile message Search for a delivery number in the order of a mobile phone number (except for a fax) and deliver it to the UMS system according to the retransmission request and the number of retransmissions.In the case of a text message, the mobile phone number is retrieved and transmitted to the UMS system, but the number of requests If the message transmission type is exceeded or the message transmission type is not a mobile phone number, or in the case of a fax message, if the called number is a mobile phone number, the integration using a lifetime number, which delivers a message indicating that the called number was not found to the UMS system. Messaging service message delivery method. In the message delivery system having a processor for delivering a Unified Messaging Service (UMS) message using a lifetime number, A first function of receiving, by an intelligent supplementary service device (ISN), a lifetime number and a message transmission type; A second function of the intelligent supplementary service device (ISN) querying the lifetime number database based on the lifetime number and analyzing the message transmission type; And The intelligent additional service device (ISN) extracts the first called number for the lifetime number according to the lifetime number service type based on the message transmission type and transmits the first called number to the UMS system so that the UMS system transfers the first called number. A third function to send the UMS message A computer-readable recording medium having recorded thereon a program for implementing the program. The method of claim 9, If the message transmission fails, the intelligent additional service device (ISN) according to the retransmission request of the UMS system based on the message transmission type, the second call to the lifetime number according to the retransmission request, the number of retransmissions, the lifetime number service type A fourth function that causes the UMS system to transmit the UMS message to the second called number by extracting a number and transmitting the number to the UMS system; A computer-readable recording medium having recorded thereon a program for further implementing the program. In the message delivery system having a processor for delivering a Unified Messaging Service (UMS) message using a lifetime number, A first function of receiving, by the UMS system, a lifetime number and a UMS message; A second function of transmitting, by the UMS system, the lifetime number and a transmission type of the message to an intelligent supplementary service device (ISN); A third function of the intelligent supplementary service device (ISN) querying the lifetime number database based on the lifetime number and analyzing a message transmission type; A fourth function of extracting a first called number for the lifetime number according to the lifetime number service type based on the message transmission type and transmitting the extracted first called number to the UMS system; And A fifth function of transmitting, by the UMS system, the UMS message to the first called number; A computer-readable recording medium having recorded thereon a program for implementing the program. The method of claim 11, A sixth function of requesting, by the UMS system, a delivery number (called number) for retransmitting a message to the intelligent additional service device (ISN) when the message transmission fails; A seventh function of the intelligent additional service device (ISN) querying the lifetime number database based on the lifetime number and analyzing the message transmission type; An eighth function of the intelligent supplementary service device (ISN) extracting a second called number for the lifetime number according to the retransmission request, the number of retransmissions, and the lifetime number service type based on the message transmission type and transmitting it to the UMS system; ; And A ninth function of causing the UMS system to transmit the UMS message to a second called number; A computer-readable recording medium having recorded thereon a program for further implementing the program.