JP4983325B2 - How to provide a nickname telephone service using mobile Internet technology - Google Patents

Description

  The present invention relates to a method for providing a nickname telephone service using mobile Internet technology.

  Conventionally, in community sites such as chat, blog, and auction on the Internet, communication between users is mainly performed by characters, and there is a need to perform communication by voice. However, when using a telephone terminal or a mobile phone terminal, it is necessary to exchange each other's telephone number, and voice communication cannot be achieved while maintaining anonymity between users.

Patent Document 1 describes a service that allows a telephone number of a connection partner to be searched from a nickname and makes a call to the telephone number of the connection partner using the search result. Further, in Patent Document 2, a member's mobile phone number and identification number are stored in a database in association with each other, and when a member designates an identification number of another member and information is transmitted, the database is stored. A service configured to transmit information from the member to another member's mobile phone by reference is described. Thereby, communication can be aimed at using a mobile phone terminal, maintaining each other's anonymity.
JP 2001-177661 A JP 2001-188724 A

  However, in the service described in Patent Document 1, it is possible to make a call to the other party simply by specifying a nickname. However, there is nothing about making a call without notifying the other party of the telephone number of the caller. Not considered. Therefore, the nickname telephone service described in Patent Document 1 has a problem that voice communication cannot be performed while anonymity of the transmission source and the transmission destination is maintained. The service described in Patent Document 2 only transmits and receives information between members, and cannot communicate in real time using voice while maintaining anonymity.

  The present invention has been made in view of such problems, and it is a nickname telephone service that can make a voice call with peace of mind while maintaining the anonymity of a caller and a callee between users of a community site. An object is to provide a providing method.

  One aspect of the method for providing a nickname telephone service according to the present invention is that a voice call can be made without notifying each other's actual mobile phone number from a mobile phone terminal A of a user A to a mobile phone terminal B of a user B on the other side A nickname phone service providing method for providing a nickname phone service, wherein the nickname phone service from the user A to the user B is unique to the nickname phone call from the user A to the user B. Is assigned to the mobile phone terminal B, and the mobile phone terminal A is assigned an alternative number TB different from the mobile phone number B, and the call from the mobile phone terminal A to the alternative number TB is sent from the user B to the user A. The mobile phone terminal B is notified of an alternative number TA that is uniquely set for the nickname phone and is different from the mobile phone number A of the mobile phone terminal A It is intended to incoming call from the mobile telephone terminal A to the mobile telephone terminal B Te.

  Thus, since user A makes a nickname call using the alternative number TB uniquely set for the nickname call from user A to user B, mobile phone number B of user A is Since it is not known and the mobile phone number A of the user A is not known in order to notify the user B of the alternative number TA that is uniquely set for the nickname call from the user B to the user A, the anonymity is bi-directional. Since the alternative number TA is notified to the user B, the user B can make a call with peace of mind.

  Another aspect of the method for providing a nickname telephone service according to the present invention is the above-described nickname telephone service provision method, wherein a call to the alternative number TB is transferred from the mobile phone terminal A to the telephone for transferring the nickname telephone. A call continuation number UB, which is an unused number, is transferred to the mobile phone terminal B via an unused call continuation number UB, and a call from the mobile phone terminal B to the alternative number TA is unused. The call is transferred to the mobile phone terminal A via some other call continuation number UA. In this way, by using the call continuation number during a call, it is possible to make a nickname call without using an alternative number during a call.

  Further, according to another aspect of the method for providing a nickname telephone service according to the present invention, in the method for providing a nickname telephone service, the alternative numbers TA and TB are specified for a plurality of users belonging to a certain group. It is shared as a telephone number of a call destination for making the nickname call to one user. In this way, by sharing an alternative number within a group, it is not necessary to prepare an alternative number for all users' mobile phone terminals.

  According to another aspect of the method for providing a nickname telephone service according to the present invention, in the nickname telephone service provision method, the nickname B is referred to by referring to the nickname B that identifies the user B designated by the user A. The mobile phone number B corresponding to the mobile phone number B is acquired, and the substitute number TB that is uniquely set is assigned to the nickname call from the mobile phone number A to the mobile phone number B. In this way, by acquiring the mobile phone number B corresponding to the nickname B, the user A can make a nickname call to the user B by designating the nickname B.

  Another aspect of the nickname telephone service providing method according to the present invention is the nickname telephone service providing method, wherein the alternative number TA and the cellular phone number B notified to the cellular phone terminal B are referred to. The mobile phone number A is acquired, and the nickname A that identifies the user A corresponding to the mobile phone number A is acquired. In this way, by acquiring the nickname A with reference to the alternative number TA and the mobile phone number B notified to the mobile phone terminal B, the nickname A is displayed on the mobile phone terminal B to notify the incoming call from the user A. be able to.

  Also, one aspect of the nickname telephone service system according to the present invention is a nickname telephone service system that provides a nickname call for performing a voice call without notifying each other's actual mobile phone number, and for the mobile phone terminal Unlike an actual mobile phone number, a number assignment function for assigning a substitute number uniquely set for the nickname call from the calling-side mobile phone terminal to the called-side mobile phone terminal, and calling to the substitute number A call control function for receiving a call; and a switching function for transferring a call from the mobile phone terminal to the call control function.

  In another aspect of the nickname telephone service system according to the present invention, the nickname call service system includes an alternative number correspondence table storing the alternative numbers, and the number assignment function refers to the alternative number correspondence table. Then, the substitute number corresponding to the mobile phone terminal is given.

  In another aspect of the nickname call service system according to the present invention, in the nickname call service system, the number assignment function can be used when there is no substitute number corresponding to the substitute number correspondence table. A number is assigned as the alternative number and registered in the alternative number correspondence table. In addition, the alternative number correspondence table can set the same alternative number for different incoming side telephone terminals as long as the outgoing side telephone terminals are different, and the outgoing side telephone terminal Are different, it is possible to set different alternative numbers for the same called telephone terminal.

  Another aspect of the nickname telephone service system according to the present invention further includes a profile table in which the nickname for identifying the users is associated with the mobile phone number of the mobile phone terminal of the user. . By providing the profile table in this way, the nickname of the other user can be acquired.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a diagram showing a configuration example of the entire system that implements a nickname telephone service using mobile Internet technology according to an embodiment of the present invention. This system comprises a mobile phone terminal 11, a community site 12, and a mobile operator management system 13.

  The mobile phone terminal 11 includes an application for a nickname call service in addition to a mobile phone function such as a normal phone function, a mail function, and a browser function for browsing a web page. The application for the nickname call service includes a nickname acquisition function 14 for acquiring a nickname of a partner who performs a nickname call, and an alternative number acquisition function for acquiring a substitute number of itself and the partner when performing a nickname call. The alternative number is a number assigned to the mobile phone terminal on the caller side and the callee side when performing a nickname call, and is a number different from the actual mobile phone terminal number (hereinafter referred to as a real number). The mobile phone terminal 11 is configured to access the community site 12 using the mobile Internet function, perform a nickname call request (calling user), obtain a nickname when a call arrives, automatically register in the phone book, and make a call. Yes. It is assumed that the mobile phone terminal of the calling user A who is the calling side user who performs the nickname call is 11A, and the mobile phone terminal of the receiving user B who is the receiving side user is 11B.

  The community site 12 is a site that provides a community that can be used anonymously such as chat, blog, auction, etc., used by the calling user A and the receiving user B. The calling user A and the receiving user B are both subscribed to the community site 12 and automatically access the community site 12 by a unique ID assigned by an ID assigning means or the like installed in the mobile phone terminal. Authenticated. In the community site 12, users are identified by nicknames. The community site 12 performs user management from a user account, and authentication is required for access to the community site 12. The community site 12 has a secure network with the mobile operator management system 13 and can stably access the mobile operator management system 13.

  The community site 12 includes a profile table 24 and a nickname / phone number conversion function 25. The profile table 24 has its own profile registered by a user who uses the community site 12. As shown in FIG. 2, the profile table 24 stores a user ID, a nickname, and a real number of the mobile phone terminal 11 in association with each other. The user ID is automatically assigned by the mobile phone terminal 11 when accessing the community site 12 and is not disclosed. The nickname is an identification means for identifying users on the community site 12 and is disclosed in the community site 12. The real number is an actual telephone number of the mobile phone terminal 11 possessed by each user and is not disclosed in the community site 12. Disclosure of information about the user can be set separately by each user, and at least the user ID, the nickname, and the real number of the mobile phone terminal 11 shown in FIG. 2 are registered.

  The mobile operator management system 13 includes a mobile network 16, a nickname call system 17, a busy number management table 21, and an alternative number correspondence table 22. The mobile network 16 is a network such as a mobile phone line network or a packet communication network. The mobile operator management system 13 can access the community site 12 via the mobile network 16 from the browser function of the mobile phone terminal 11. The mobile operator management system 13 is configured to connect a nickname telephone service and a call path through a circuit switching network during nickname telephone communication. It is also possible to provide additional services such as transferring a call during a call to another user.

  The nickname call system 17 has the same function as the mobile network 16 and is recognized as a destination network from the mobile network 16. The nickname call system 17 includes a number assignment function 18, a switching function 19, and a call control function 20. The nickname call system 17 pools a plurality of dedicated mobile phone numbers used for nickname calls. The pooled mobile phone numbers are assigned to the alternative number groups T1 to Tn and the call continuation number groups U1 to Um, respectively. The alternative number Tn is a telephone number indicating a destination at the start of the nickname call, and the call continuation number Um is a telephone number for performing transfer when the nickname call is continued.

  The alternative number Tn is a temporary telephone number of the other party to be notified to the mobile phone terminal 11, and is a telephone number different from the real numbers A and B. The alternative number Tn is managed by the alternative number correspondence table 22 as shown in FIG. The substitute number correspondence table 22 stores the real number of the caller mobile phone terminal 11, the substitute number Tn, which is a temporary mobile phone number, and the real number of the mobile phone terminal that finally receives the call. The alternative number Tn is uniquely associated with the combination of the source number and the last number. Since the alternative number Tn is set for the combination of the calling user and the incoming user, if the outgoing user is different, the primary arrival alternative number Tn may be different even if the incoming user is the same. Further, if the calling users are different, the telephone numbers of the final arrival may be different even if the alternative number Tn of the primary arrival is the same. That is, the number of the alternative number groups T1 to Tn is the maximum number that one user can register as a partner for the nickname call. In the following, as shown in the top table of FIG. 3, the actual number of the transmission source is number A, the alternative number is number TB, and the final incoming number is number B. The correspondence table 22 is described as “source = number A, primary arrival = alternate number TB, final arrival = number B”.

  The alternative number Tn can also be configured to be shared within the same group G1 of the community site 12. That is, the substitute number Tn of the user A can be set as the substitute number TA for all users belonging to the same group of the community site 12. At the same time, this alternative number TA can be set as an alternative number for user B for all users belonging to group G2 different from group G1. Thus, the alternative number Tn is shared by different combinations of the calling user and the called user.

  The call continuation number Um is a temporary telephone number of a transfer destination during a call in which a call transmitted from the real number A to the alternative number Tn at the start of the call is transferred when the call is continued. That is, the number of call continuation numbers Um is the maximum number of mobile phone terminals 11 that can be simultaneously connected to the nickname call system 17. The call continuation number Um is managed by the busy number management table 25 as shown in FIG. In the in-use number management table 25, the call continuation number Um is associated with its use state. For example, if the call continuation number U1 is used for a nickname call, the usage status indicates “in use”, and if the call continuation number U2 is not used, “unused” is indicated.

  The number assignment function 18 refers to the substitute number correspondence table 22 at the start of the nickname call, transmits the corresponding substitute number groups T1 to Tn to the mobile phone terminal 11, and refers to the busy number management table 21 when the nickname call is continued. The call continuation number Um that is not used is assigned to a nickname telephone as a transfer telephone number. The switching function 19 is configured to transfer a call from the mobile phone terminal 11 to the alternative number Tn to the call continuation number Um when the nickname call starts.

  Next, a method for providing a nickname telephone service in the system configured as described above will be described. 5 to 9 are sequence diagrams relating to a method for providing a nickname telephone service when a nickname call is made from the mobile phone terminal 11A of the calling user A to the mobile phone terminal 11B of the incoming user B. FIG.

  As shown in FIG. 5, first, (1) the calling user A accesses the alternative call number acquisition page prepared on the page of the community site 12 via the mobile phone terminal 11A, and the partner who wants to make a nickname call. Specify nickname B. The calling user A is automatically authenticated by the user ID transmitted by the ID assigning means when accessing the community site 12. After this authentication, it is possible to specify the person of the calling user A based on the user ID. The cellular phone terminal 11A requests acquisition of the alternative number B of the incoming user B having the nickname B.

  Next, (2) the nickname / phone number conversion function 25 of the community site 12 refers to the profile table 24 using the user ID of the calling user A as a key, and the real number of the mobile phone terminal 11A of the calling user A accessing Get A. The nickname / phone number conversion function 25 acquires the real number B of the mobile phone terminal 11B of the called user B corresponding to the nickname B of the other party specified by the calling user A. (3) The nickname / phone number conversion function 25 of the community site 12 transmits the number A, which is a caller number, and the number B, which is a callee number, to the number assignment function 18 of the nickname call system 17.

  Next, (4) the number allocation function 18 that has received the number A which is the transmission source number and the number B which is the transmission destination number, obtains “calling = number A, final arrival = number B” from the alternative number correspondence table 22. Search the table you have. When there is a table corresponding to “calling = number A, final arrival = number B”, the number assignment function 18 assigns a number corresponding to the primary arrival included in the table as an alternative number TB. If there is no table corresponding to “source = number A, final destination = number B”, an unassigned number is selected from the pooled alternative number groups T1 to Tn and assigned as the alternative number TB, and the alternative number correspondence table 22 records “departure = number A, primary arrival = number TB, final arrival = number B”.

Next, (5) the nickname call system 17 responds by transmitting the assigned alternative number TB to the community site 12. (6) The community site 12 receives this response by the nickname / phone number conversion function 25, and transmits the substitute number TB to the mobile phone terminal 11A of the calling user A and responds. (7) When the mobile phone terminal 11A of the calling user A receives the alternative number TB, the nickname B and the alternative number TB are automatically associated and registered in the telephone directory. (8) A call is made from the mobile phone terminal 11A to the alternative number TB by the terminal operation of the calling user A.
(9) A call to the alternative number TB of the mobile phone terminal 11A is routed to the nickname call system 17. The switching function 19 causes the call control function 20 to receive a call to the alternative number TB.

  Subsequently, as shown in FIG. 6, (10) the call control function 20 refers to the alternative number correspondence table 24 and searches the table corresponding to the received “calling = number A, primary arrival = number TB”. The “last arrival = number B” of the table is acquired. If there is no table corresponding to “calling = number A, primary arrival = number TB” in the alternative number correspondence table 24 and “final arrival = number B” cannot be acquired, the table does not belong to the community site 12. The sequence is terminated when it is determined that the call is from a person.

Next, (11) the call control function 20 obtains a call continuation number that can be used from the call continuation numbers U1 to Um by the number assignment function 18, and is in use since the use state of the call continuation number UB can be used. The call is transferred to the call continuation number UB. After the call is disconnected, the number assignment function 18 changes the use state of the call continuation number UB to be usable. As a result, the call continuation number UB can be assigned to another calling user. (12) The switching function 19 transfers the call for the call continuation number UB to the call control function 20. As a result, a session is established between the calling user A and the nickname call system 17.

  Next, (13) the call control function 20 refers to the alternative number correspondence table 24 as “source = number B, final destination = number A”, and acquires “primary destination = alternate number TA” from the corresponding table. . When the table corresponding to “calling = number B, final arrival = number A” is not registered in the substitution number correspondence table 24, the call control function 20 assigns the substitution number TA to the number allocation function 18. Request. The number assigning function 18 selects an unassigned number from the pooled alternate called party number groups T1 to Tn and assigns it as an alternate number TA. Thereafter, the number assignment function 18 records “calling = number B, primary arrival = number TA, final arrival = A” in the alternative number correspondence table 22. Next, (14) the call control function 20 that acquired the alternative number TA sends the call to the real number B. (15) The switching function 19 of the nickname call system 17 transfers the call of the call control function 20 to the mobile phone terminal 11B via the mobile network 16.

  Subsequently, as shown in FIG. 7, (16) the nickname acquisition function 14 of the mobile phone terminal 11 </ b> B transmits the alternative number TA of the calling user A together with the user ID of the incoming user B to the nickname inquiry page of the community site 12. (17) The nickname / phone number conversion function 25 acquires the real number B from the user ID of the incoming user B. (18) The nickname / telephone number conversion function 25 transmits the real number B, which is the transmission source number, and the alternative number TA, which is the transmission destination number To, to the number assignment function 18 of the nickname call system 17. (19) The number allocation function 18 refers to the alternative number correspondence table 22 and searches using “calling = number B, primary arrival = alternative number TA” as a key, and obtains “last arrival = real number A” from the corresponding table. Then, it responds to the nickname / phone number conversion function 25.

  Next, (20) the nickname / phone number conversion function 25 searches the profile table 24 to obtain the nickname A corresponding to the real number A, and returns the nickname A to the mobile phone terminal 11B of the incoming user B. To do. (21) The nickname acquisition function 14 of the mobile phone terminal 11B automatically registers the nickname A in the phone book of the mobile phone terminal 11B. (22) The nickname acquisition function 14 of the mobile phone terminal 11B displays the nickname A on the screen display unit of the mobile phone terminal 11B of the incoming user B and notifies the incoming user B that the incoming call is from the nickname A.

  Then, as shown in FIG. 8, (23) when a call is made from nickname A by terminal operation of incoming user B, incoming user B enters a call state with nickname call system 17. Here, a session between the real number A and the call continuation number UB is established, and a session between the alternative number TA and the real number B is established. (24) The call control function 20 of the nickname call system 17 selects an unused telephone number from the call continuation number groups U1 to Um via the number assignment function 18 and acquires the call continuation number UA. Thereafter, the number assignment function 18 changes the usage state of the call continuation number UA from unused to in use. (25) The nickname call system 17 transfers the call for the real number B of the alternative number TA to the call continuation number UA. This transfer can use a conventional transfer mechanism during a call. Thereby, a session between the real number A and the call continuation number UB is established, and a session between the call continuation number UA and the real number B is established.

  Next, (26) the call control function 20 instructs the audio media to be transmitted and received between the numbers A and B. Note that this third party call control can be used for transmission / reception of the audio media. Thereby, a call between the calling user A and the receiving user B is started. Specifically, a session between the real number A and the call continuation number UB is established, a session between the call continuation number UA and the real number B is established, and a voice call between the number A and the number B is established.

  Next, as shown in FIG. 9, (27) the call is terminated and the calling user A disconnects the call by operating the mobile phone terminal 11A (or the incoming user B operates the mobile phone terminal 11B to call Cutting). (28) Thereby, the call control function 20 automatically transmits the call of the other party to the mobile phone terminal 11B by the disconnection request mobile NW. (29) The number assignment function 18 changes the use state of the call continuation numbers UA and UB from being used to being usable.

  The substitute number TB associated with the nickname B of the called user B is registered in the phone book of the calling user A's mobile phone terminal 11A, and the calling user A's phone book of the calling user A's mobile phone terminal 11B contains the substitute number TB. Since the alternative number TA associated with the nickname A is registered, when calling the calling user A from the calling user A again or when calling the calling user A from the calling user B, It is possible to make a call by reading out a corresponding user from the telephone directory. In this case, each procedure may be performed from sequence (8).

  In the nickname telephone service providing method configured as described above, the calling user A is not aware of the number of the mobile phone terminal 11 and ensures anonymity, while the incoming user B is notified of the nickname A. , People can be identified and calls can be made with peace of mind.

  In addition, the nickname call system 17 and the community site 12 cooperate to arbitrarily set whether or not the call is allowed. For example, it is possible to make a call between people belonging to the same group in the community and to reject incoming calls from other people.

  In addition, a dedicated IP (Internet Protocol) telephone device and software are not required for the nickname call, and the calling user A and the receiving user B, which are end users, have the browser function and By using the mail function, you can easily make nickname calls. For example, the present invention can be implemented by externally attaching an expansion system to a mobile communication network such as an existing GSM (Global System for Mobile Communications).

  In addition, since the users can talk anonymously, it is easy for the users to increase the number of parties to talk with, and communication between users is promoted. Further, for example, if the alternative numbers TA and TB are shared by users belonging to the same group of the community site 12, it is not necessary to prepare alternative numbers Tn for the users. During a nickname call, since the call is transferred by the call continuation number Um, the alternative number Tn is used only at the start of the call, so the alternative number Tn to be pooled can be reduced.

  In addition, since the alternative number TA (TB) associated with the nickname A (B) is registered in the telephone directory of each mobile phone terminal 11B (11A), each time a nickname call is made, the community site 12 There is no need to access the WEB page.

  Further, since the alternative numbers TA and TB are different from the real numbers A and B, the user can easily receive incoming calls to the alternative numbers TA and TB to the mobile phone terminals 11A and 11B by canceling the nickname telephone service contract. Can be stopped.

  Further, since the alternative numbers TA and TB are uniquely associated with the combination of the source number and the final destination number, the alternative number correspondence table 22 indicates “source = real number A, primary destination = alternate number”. When TB, final arrival = actual number B ", when the other calling user C who is not the calling user A calls the alternative number TB, the user who is not the receiving user B answers the call. Therefore, it is possible to maintain high anonymity with respect to other outgoing users C.

It is a figure which shows the example of 1 structure of the nickname call system 10 which implemented the nickname telephone service using the mobile internet technique which concerns on this invention. It is a figure which shows the profile table. It is a figure which shows the alternative number corresponding table. It is a figure which shows the number management table 21 in use. It is a sequence diagram in the provision method of a nickname telephone service. FIG. 6 is a sequence diagram in the nickname telephone service providing method following FIG. 5. FIG. 7 is a sequence diagram in the nickname telephone service providing method following FIG. 6. FIG. 8 is a sequence diagram in the nickname telephone service providing method following FIG. 7. FIG. 9 is a sequence diagram in the nickname telephone service providing method following FIG. 8.

Explanation of symbols

11 ... Mobile phone terminal 12 ... Community site 13 ... Mobile operator management system 14 ... Nickname acquisition function 16 ... Mobile network
17 ... Nickname call system 18 ... Number assignment function 19 ... Switching function 20 ... Call control function 21 ... In-use number management table 22 ... Alternate number correspondence table 24 ... Profile table 25 ... Nickname / phone number conversion function

Claims (9)

This is a method for providing a nickname telephone service that provides a nickname telephone for performing a voice call without notifying each other's actual mobile phone number from a mobile phone terminal A of a user A to a mobile phone terminal B of a user B on the other side. And
In the nickname call system that controls the nickname call between the mobile phone terminal A and the mobile phone terminal B, the nickname call request from the user A to the user B is sent from the user A to the user B. Uniquely set for the nickname phone, assigning an alternative number TB different from the mobile phone number B of the mobile phone terminal B, and notifying the mobile phone terminal A,
The nickname call system is uniquely set for the nickname call from the user B to the user A for the call from the mobile phone terminal A to the alternative number TB, and the mobile phone terminal A Notifying the mobile phone terminal B of an alternative number TA different from the telephone number A,
A call from the mobile phone terminal A to the alternative number TB is sent to the mobile phone terminal B via an unused call continuation number UB in the call continuation number group that is a telephone number for transferring the nickname phone. And forward to
A method for providing a nickname telephone service in which a call from the mobile phone terminal B to the alternative number TA is transferred to the mobile phone terminal A via another unused call continuation number UA.   2. The nickname call system according to claim 1, wherein the alternative numbers TA and TB are shared by a plurality of users belonging to a certain group as a telephone number of a destination to which the specific one user makes the nickname call. How to provide nickname phone service. The nickname calling system is
Obtaining the mobile phone number B corresponding to the nickname B identifying the user B specified by the user A;
The method for providing a nickname telephone service according to claim 1 or 2, wherein, for the nickname telephone from the mobile phone number A to the mobile phone number B, the mobile phone number B is assigned the substitute number TB that is uniquely set. The nickname calling system is
Obtaining the mobile phone number A with reference to the alternative number TA and the mobile phone number B notified to the mobile phone terminal B;
The nickname telephone service providing method according to any one of claims 1 to 3, wherein a nickname A that identifies the user A corresponding to the mobile phone number A is acquired. A nickname telephone service system that provides a nickname phone that makes a voice call without notifying each other's actual mobile phone number,
In response to a request for the nickname call from the user A to the user B, the mobile phone number B of the user B's mobile phone terminal B is uniquely set for the nickname call from the user A to the user B. A different alternative number TB is allocated and notified to the mobile phone terminal A of the user A, and the nickname call from the user B to the user A is made in response to a call from the mobile phone terminal A to the alternative number TB. A number assignment function that is uniquely set for the mobile phone terminal A and notifies the mobile phone terminal B of an alternative number TA different from the mobile phone number A of the mobile phone terminal A;
The call control function for receiving a call to the alternative number and causing the incoming mobile phone terminal to receive a call via a call continuation number that is a transfer telephone number;
A nickname telephone service system having a switching function for transferring a call from the mobile phone terminal to the alternative number to the call continuation number. An alternative number correspondence table storing the alternative number in association with the calling side telephone terminal and the incoming side telephone terminal;
The nickname telephone service system according to claim 5, wherein the number assignment function assigns the alternative number corresponding to the calling side telephone terminal and the called side telephone terminal with reference to the alternative number correspondence table. The alternative number correspondence table is:
If the calling telephone terminal is different, it is possible to set the same alternative number for the different receiving telephone terminal,
7. The nickname telephone service system according to claim 6 , wherein if the calling telephone terminal is different, a different alternative number can be set for the same called telephone terminal.     8. The nickname telephone according to claim 7, wherein when there is no alternative number corresponding to the alternative number correspondence table, the number assignment function assigns a usable telephone number as the alternative number and registers it in the alternative number correspondence table. Service system.     The nickname telephone service system according to any one of claims 5 to 8, further comprising a profile table in which a nickname for identifying the users is associated with a mobile phone number of a mobile phone terminal of the user.

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