JP3681719B2 - Communication service system and communication service program - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a communication service system, a communication service method, and a communication service program that provide a communication service for performing communication according to the situation of a communication partner.
[0002]
[Prior art]
Conventionally, as means for performing communication, a fixed telephone using an analog line or a digital line, a mobile phone in which a terminal can be moved, a VoIP (Voice over IP) telephone, and e-mail or chat using the Internet or the like are known. ing.
On the other hand, when referring to a homepage on the Internet, an advertisement system that displays an advertisement and gives an incentive when the number of times the advertisement has been viewed reaches a predetermined number is known (Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-015205
[0004]
[Problems to be solved by the invention]
  However, since each of the communication means described above is independent, even if the user is the same person as the incoming user (communication partner), a different address is required for each communication means (especially communication protocol) and each terminal. Therefore, there is a problem that it is a burden on the calling user. In addition, there is a problem that the calling user cannot easily communicate when the calling user is not ready to receive calls or has no environment for receiving calls using the communication means sent by the calling user.The
[0005]
  The present invention has been made in view of such circumstances, and it is possible to perform communication according to the situation of the communication partner.it canCommunication service systemas well asAn object is to provide a communication service program.
[0006]
[Means for Solving the Problems]
  BookThe present invention is a communication service system that controls communication means on behalf of a party that performs communication using a communication terminal, the communication service system comprising:SaidTerminal status detection means for detecting the status of the communication terminal;Referring to the detection result of the terminal status detection means, a determination means for determining whether the communication means selected from the communication terminal on the caller side can be used on the communication terminal on the callee side, and the determination by the determination means As a result, if it can be used, a terminal selection unit that selects a communication terminal on the receiving side when the selected communication unit is used, and an address acquisition unit that acquires terminal addresses of the communication terminal on the sender side and the receiving side And a communication start means for starting communication by the selected communication means between the terminal addresses of the communication terminals on the caller side and the receiving side, and detecting that the communication terminal is down by the terminal status detection means A communication terminal switching means for selecting another usable communication terminal by the terminal selection means and switching to the selected communication terminal to continue communication;It is characterized by comprising.
[0007]
  BookThe inventionCommunication means that can be used by both parties out of predefined communication means candidates when other usable communication terminals cannot be selected by the terminal selection means when the communication terminal is detected to be down A communication means selection means for selecting the communication terminal, and a communication terminal that can use the communication means selected by the communication means selection means is selected by the terminal selection means.It is characterized by that.
[0018]
  BookThe invention is a communication service program for controlling a communication means on behalf of a party who wants to communicate using a communication terminal, the communication service program comprising:SaidA terminal status detection process for detecting the status of the communication terminal;A determination process for determining whether the communication means selected from the communication terminal on the caller side is usable on the communication terminal on the called party side with reference to the detection result of the terminal status detection process, and the determination based on the determination process As a result, if it can be used, a terminal selection process for selecting a communication terminal on the receiving side when using the selected communication means, and an address acquisition process for acquiring terminal addresses of the communication terminal on the caller side and the receiving side And detecting that the communication terminal is down by the communication start process for starting communication by the selected communication means and the terminal status detection process between the terminal addresses of the caller side and the caller side communication terminals. A communication terminal switching process for selecting another usable communication terminal by the terminal selection process, switching to the selected communication terminal, and continuing communication.It is characterized by having a computer perform.
[0019]
  BookThe inventionCommunication means that can be used by both parties out of predefined communication means candidates when other usable communication terminals cannot be selected by the terminal selection means when the communication terminal is detected to be down The communication means selection process for selecting the communication means is performed by the computer, and the communication terminal that can use the communication means selected by the communication means selection process is selected by the terminal selection process.It is characterized by that.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a communication service system according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the embodiment. In this figure, reference numeral 1 denotes a communication server, a presence management unit 11 that manages presence, and a presence presence agent 12 that negotiates with other users' agents on the basis of presence information and performs various communication controls on behalf of the user. A maintenance operation unit 13 that provides a maintenance operation function, and a user information database 14 that holds various types of information related to users. Reference numeral 2 denotes a service providing server, which includes a VoIP service unit 21, a mail service unit 22, a chat service unit 23, an instant message (hereinafter referred to as IM) service unit 24, and a content distribution service unit 25. Reference numerals A and B denote user terminals, which include web browsers 31 and 41 and VoIP terminals 32 and 42, respectively. The user terminals A and B, the communication server 1 and the service providing server 2 are connected by a communication line.
Note that there are as many logical presence agents 12 as there are user terminals connected to the communication server 1. Here, since the user terminals A and B are connected to the communication server 1, it is assumed that there are two presence agents. The user terminal A is used by the user A, and the user terminal B is used by the user B.
[0025]
Next, the operation of the communication service system shown in FIG. 1 will be described with reference to FIGS. First, the login operation of the user terminal A will be described with reference to FIG.
First, the user A inputs a login (user account name, password, etc.) from the user terminal A (step S1). Then, the user terminal A makes a login request using the standard protocol (http) (step S2). This request is accepted by the presence agent 12, and the presence agent 12 loads a file for establishing a unique session to the user terminal A (step S3). Subsequently, the user terminal A establishes a session for a unique protocol (steps S4 and S5). Thereby, a unique session for presence is established between the user terminal A and the presence agent 12 of the communication server 1 (step S6).
[0026]
Next, with reference to FIG. 3, the operation for displaying the portal of the communication partner will be described. Here, the portal is a screen of the Web browser 31 and is used for grasping the status of other users and controlling various communications from this screen. First, when the user A wants to know about the user B, the user A makes a portal display request from the user terminal A (step S11). This request is accepted by the presence agent 12 for user A. In response to this, the presence agent 12 for user A makes a presence information request to the presence agent 12 for user B (step S12). In response to this, the presence agent 12 for the user B detects the situation of the user terminal B and notifies the presence agent 12 for the user A of this situation (step S13). Then, the presence agent 12 for the user A displays the portal on the user terminal A (step S14).
As described above, even when the user A wants to know the situation of the user B, the presence agent 12 can cope with the situation, so that the burden on the user B can be reduced.
[0027]
Next, with reference to FIG. 4, the operation when a communication partner adds a new communication means will be described. First, the presence agent 12 for the user B notifies the presence agent 12 for the user A of the presence information change (step S21). For example, the VoIP terminal 42 is added. In response to this, the presence agent 12 for the user A sends a presence information change notification to the user terminal A using a unique protocol (step S22). Upon receiving this notification, the user terminal A makes a request for presence information acquisition to the presence agent 12 using a standard protocol, and acquires presence information (steps S23 and S24). Then, the user terminal A displays the acquired new presence information (step S25). Thereby, the user A can know that a new communication means has been added to the user B.
[0028]
Next, with reference to FIG. 5, the operation | movement which starts communication between the user terminal A and the user terminal B is demonstrated. First, the user A clicks the “Perform VoIP communication with the user B” button on the screen of the user terminal A (step S31). In response to this, the user terminal A makes a VoIP connection request between the user A and the user B to the presence agent 12 for the user A (step S32). Upon receiving this connection request, the presence agent 12 determines whether the caller (here, user A) can use the communication means (here, VoIP) (step S33). As a result, when it cannot be used, the fact is notified to the user terminal A.
[0029]
On the other hand, if it can be used, the presence agent 12 for the user A makes a connection request to the presence agent 12 for the user B. In response to this, the presence agent 12 for the user B executes a terminal selection function (step S34) and selects a terminal of a communication partner (here, user B). Details of this terminal selection function will be described later.
[0030]
  Next, the presence agent 12 for the user A determines whether the communication flag that is the output of the terminal selection function is “OK” (step S35). If the result of this determination is not “OK”, the fact is notified to the user terminal A. On the other hand, when the communication flag is “OK”, the presence agent 12The address of the terminal that this caller owns the caller's distinguished name(Step S36). Thereby, VoIP communication is started between the user A and the user B (steps S37, S38, S39).
[0031]
Next, the operation of the terminal selection function described above will be described with reference to FIGS. The operations shown in FIGS. 6 to 8 are three diagrams from the illustrated relationship, but these are a series of operations.
First, the terminal selection function starts processing with “communication means”, “sender”, and “recipient” as arguments (step S41). Then, the presence agent 12 refers to the user information database 14 and checks the incoming user's incoming call rejector list to determine whether or not the user B is registered in the incoming call rejector list (steps S42 and S43). . As a result, if user B is registered in the incoming call rejection list, the communication flag is set to “NG” (step S44), and the process is terminated.
[0032]
On the other hand, if it is not registered in the incoming call rejection list, the presence agent 12 checks the status of the incoming user and determines whether or not the user terminal B of the user B can communicate (steps S45 and S46). The situation referred to here is either “communication state” or “incoming call ready”. As a result, if the user terminal B is not communicable, the communication flag is set to “NG” (step S47), and the process ends.
[0033]
On the other hand, if communication is possible, the presence agent 12 reads the terminal list of the user B from the user information database 14 (step S48). The terminal list is a list in which “terminal name”, “location”, and “priority” owned by the user B are associated. Here, the terminal names are “terminals B1 to B4”, the locations are “company”, “answer machine service”, “mobile phone”, and “home”, respectively, and priority levels 1 to 4 are assigned to them. Has been granted.
[0034]
Next, the presence agent 12 refers to the user information database 14 and determines whether the terminal selection function based on the communication history is set to “ON” (step S49). If it is not set as a result, the next step is skipped. On the other hand, if the terminal selection function based on the communication history is set to “ON”, the presence agent 12 refers to the user information database 14 and reads the communication history of the incoming user, and the terminal previously read from this communication history. The priority of the list is changed (step S50). In this priority change process, the location is inferred from time / space locality, and the priority is changed. For example, when the user B is logged in using a certain terminal, since there is a high possibility that the user B is in the vicinity of the terminal, the priority of the terminal is increased (the numerical value of the priority is decreased). In addition, if the user B has been communicating very recently, there is a high possibility that the user B is in the vicinity of the terminal using the communication, so the priority of the terminal is increased.
[0035]
Next, the presence agent 12 refers to the user information database 14 and determines whether the terminal selection function based on the schedule is set to “ON” (step S51). If it is not set as a result, the next step is skipped. On the other hand, if the terminal selection function based on the schedule is set to “ON”, the presence agent 12 refers to the user information database 14 and reads the schedule of the incoming user, and the terminal list previously read based on this schedule Is changed (step S52). In this priority change process, the location is estimated from the schedule of the incoming user on the day, and the priority is changed. For example, if the current time is 10 o'clock, as shown in FIG. 7, the user B's schedule indicates that the user B is in the vicinity of the terminal B1 because the user B is likely to be in the company. Increase the priority of. Also, when traveling, the priority of the mobile phone terminal is increased.
[0036]
Next, the presence agent 12 refers to the user information database 14 and determines whether the terminal selection function according to the user status is set to “ON” (step S53). If it is not set as a result, the next step is skipped. On the other hand, if the terminal selection function according to the user status is set to “ON”, the presence agent 12 detects the status of the user terminal B and changes the priority of the terminal list read out earlier based on the detection result. (Step S54). This priority change process is to change the priority by analogizing the location (sitting, leaving, etc.) according to the status of the terminal. For example, when the load on the CPU is high or there is a keyboard input, there is a high possibility that the user is seated, so the priority of the terminal is increased. Also, when there is no keyboard input or when the screen saver is activated, the priority of the terminal is lowered.
[0037]
Next, the presence agent 12 checks whether or not each terminal can be used (step S55). As a result, the terminal that is down is deleted from the terminal list. For example, when the terminal B4 is down, the terminal B4 in the terminal list is deleted.
[0038]
Next, the presence agent 12 converts the location of the called party into a terminal address (step S56). As a result, the terminal list becomes a list in which “terminal name”, “address”, and “priority” are associated with each other. Then, the presence agent 12 sets the communication flag to “OK” (step S57), returns the contents of the terminal list as the output of this function, and ends the processing.
[0039]
Next, with reference to FIGS. 9 and 10, the operation of terminal switching when the terminal is down will be described. First, when the VoIP terminal 42 of the user B goes down (step S61), the presence agent 12 for the user B detects the terminal down. Then, the presence agent 12 for user B turns off the VoIP terminal 42 (step S62). Subsequently, the presence agent 12 determines whether communication is currently being performed (step S63). As a result, if not in communication, the process proceeds to step S69. When communication is in progress, the next connection destination candidate is searched based on the previously created terminal list (step S64), and it is determined whether there is a terminal candidate (step S65). As a result, if there is another terminal candidate, that terminal is connected to the VoIP terminal 32 of user A (steps S66 and S67), and communication is continued.
[0040]
On the other hand, if it is determined in step S63 that there is no communication, the presence agent 12 searches for the next candidate for the terminal (step S69) and determines whether there is a terminal candidate (step S70). As a result, if there is a candidate, the process is terminated. If there is no candidate, the medium (VoIP) is turned off (step S71). Then, the presence agent 12 determines whether or not the user A is activating the portal (step S72). As a result, if not activated, the process is terminated. If it is active, the presence agent 12 for the user B notifies the presence agent 12 for the user A that the VoIP terminal is turned off (step S73). In response to this, the presence agent 12 for the user A notifies the user terminal A that the VoIP terminal has been turned off (step S74) and also acknowledges the presence agent 12 for the user B. (Step S75).
[0041]
If there is no terminal candidate in the determination in step S65, the presence agent 12 turns off the media (VoIP) (step S76). Then, the presence agent 12 for the user B disconnects the communication with the VoIP terminal 32 of the user A (step S77), and notifies the presence agent 12 for the user A that the terminal is down (step S78). . In response to this, the presence agent 12 for the user A ends the VoIP communication with the user B (step S79), and notifies the presence agent 12 for the user B to that effect (step S80). Then, the presence agent 12 for the user B ends the VoIP communication with the user A (step S81), and performs automatic selection by agent connection (step S82). This automatic selection will be described later.
[0042]
  Next, with reference to FIG. 11, an operation of automatically selecting a terminal and performing communication will be described. First, user A displays “user B” on the screen of user terminal A.And communicationClick the “Perform” button (Step S91). At this time, no communication means is designated. In response to this, the user terminal A makes a connection request between the user A and the user B to the presence agent 12 for the user A (step S92). Upon receiving this connection request, the presence agent 12 for user A makes a connection request to the presence agent 12 for user B. In response to this, the presence agent 12 for the user B acquires a list of communication means candidates for the incoming user (step 93) and notifies the presence agent 12 for the user A. In this list of communication means candidates, priority is given to each communication means.
[0043]
  Next, the presence agent 12 for user A selects the communication means candidate list in descending order of priority, and repeats the processing up to step S97 for the number of communication means candidates (step S94). Subsequently, the presence agent 12 for the user A determines whether the caller (here, the user A) can use the communication means (step S95). As a result, if it cannot be used, the next step is skipped. On the other hand, if it can be used, the presence agent 12 for the user A makes a terminal selection request to the presence agent 12 for the user B. In response to this, the presence agent 12 for user B executes a terminal selection function (step S96) and selects a communication partner terminal. The details of this terminal selection function are as described above. Next, the presence agent 12 for the user A determines whether or not the communication flag that is the output of the terminal selection function is “OK” (step S98). If the result of this determination is not “OK”, the fact is notified to the user terminal A. On the other hand, when the communication flag is “OK”, the presence agent 12The address of the terminal that this caller owns the caller's distinguished name(Step S99). As a result, between user A and user BBy means of communication automatically selected inCommunication is started (steps S100, S101, S102).
[0044]
As described above, even when the communication means is not designated, the communication means that can automatically communicate is selected, so that the burden on the user can be greatly reduced.
[0045]
Next, another embodiment will be described. FIG. 12 is a block diagram showing the configuration of another embodiment. In this figure, the same parts as those in the apparatus shown in FIG. The apparatus shown in this figure is different from the apparatus shown in FIG. 1 in that an advertisement service providing server 5 and an advertisement pool DB (database) 53 including an advertisement publisher portal 51 and an advertisement service providing application 52 are provided, and an advertisement service is provided. It is a point to do.
[0046]
Next, the operation of the advertisement service will be described with reference to FIGS. First, when the advertiser 7 logs into the advertisement service providing server 5 and registers his / her advertisement, the advertisement service providing server 5 registers the advertisement content in the advertisement pool DB 53 (step S111).
[0047]
Next, after the advertisement publisher (user A) logs in to the advertisement service providing server 5 from the user terminal A and selects an advertisement registered in the advertisement pool DB 53 (step S112), the advertisement service providing server 5 The advertisement is displayed on the presence display portal of the advertisement publisher (user A) (step S113). At this time, the advertisement service providing application 52 holds an advertisement publisher, an advertiser, and time therein. The advertisement publisher (user A) selects an advertisement in the advertisement pool DB 53 in consideration of information such as the form of the advertisement fee and the number of advertisement publishers.
[0048]
Next, when the advertisement viewer (user B) views the advertisement publisher portal 51 using the user terminal B, the HTTP access log 54 is held in the advertisement service providing server 5 (step S114). Then, when the advertisement viewer (user B) clicks on the advertisement on the advertisement publisher portal 51 and moves to the site of the advertiser 7 to refer to the detailed content of the advertisement, the information that the click has been made is the advertisement service providing server 5. (Step S115). At this time, the advertisement service providing application 52 stores therein the user who clicked the advertisement, the advertisement publisher, and the advertiser.
[0049]
Next, when the advertisement viewer (user B) performs a purchase activity on the site of the advertiser 7, the advertiser 7 reports to the advertising service provider 6 how much sales have been made (step S116). At this time, the advertisement service providing application 52 internally retains the user who clicked the advertisement of the advertisement service and the action at the advertisement site.
[0050]
Next, the advertiser 7 pays the advertisement fee to the advertisement service provider 6 according to the form of the advertisement fee (step S117). Then, the advertisement service provider 6 distributes the advertisement fee to a plurality of advertisement publishers (including the user A) according to the payment from the advertiser 7 (step S118). From the HTTP access log of the service providing server 5, the following four types ((1) to (4)) are given to an advertisement publisher who has been accessed by a user who has made a purchase activity on the advertiser 7 site. The distribution rate can be set according to the access.
(1) An advertisement was placed on the publisher's portal.
(2) I accessed the publisher's portal, but did not click on the advertisement.
(3) Accessed the advertiser's portal and clicked on the advertisement to move to the advertiser's site.
(4) By accessing the advertisement publisher's portal and clicking on the advertisement, he went to the advertiser's site and conducted purchasing activities.
[0051]
Further, the advertising fee can be set by combining the advertiser 7 and the following four ((5) to (8)).
(5) The time when the advertisement was placed (calculated from the time when the advertisement publisher selected the advertisement).
(6) The number of times an advertisement is posted, accessed by someone, and the advertisement is viewed (calculated from the HTTP access log).
(7) Number of clicks on the advertisement.
(8) The number of times that a user who clicked an advertisement has made purchases on the advertiser's site.
[0052]
In this way, since the advertisement is posted on the callee's portal and is always opened when trying to realize communication with the callee by various services such as VoIP, the caller communicates with the callee. , You can always see ads.
[0053]
In addition, since the callee can directly explain or recommend the contents of the advertisement in the communication started immediately after the caller sees the advertisement, the effect of the advertisement can be improved. In addition, it is not a broadcast type from a publisher to a viewer such as an Internet advertisement, but the caller (viewer) is interested because the caller starts communication with the caller who is the advertiser immediately after viewing the advertisement. Even for advertisements that do not have a URL, it is possible to appeal from the recipient (publisher), so the click rate can be improved. In addition, since the caller is recommended about the content of the advertisement by a callee who has a known relationship for communication, the reliance on the advertisement is enhanced, and the purchaser and the service are easily used.
[0054]
Further, by using the log that the caller has accessed to the portal of the callee, the number of times the callee (advertisement publisher) has seen the advertisement can be counted to generate an incentive that the advertisement has been seen. Further, by using the HTTP access log, it becomes possible to easily manage the number of times an advertisement has been viewed, and it becomes possible to distribute incentives more accurately in combination with conventional incentive methods.
[0055]
Note that a communication service is obtained by recording a program for realizing the processing shown in FIGS. 2 to 11 and 14 on a computer-readable recording medium, causing the computer system to read and execute the program recorded on the recording medium. Processing may be performed. Here, the “computer system” includes an OS and hardware such as peripheral devices. Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used. The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Further, the “computer-readable recording medium” refers to a volatile memory (RAM) in a computer system that becomes a server or a client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. In addition, those holding programs for a certain period of time are also included.
[0056]
The program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line. The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, and what is called a difference file (difference program) may be sufficient.
[0057]
【The invention's effect】
  As described above, according to the present invention, the user can grasp the status of the called party in real time. Further, when performing communication, it is not necessary for the caller to know each communication means of the called party and the address of each terminal, and communication is possible only by selecting the communication means. In addition, it is possible for the called party to perform optimal communication without notifying the other party of his / her situation and without checking the situation of the other party in advance. Further, when the terminal goes down, the communication can be continued without the trouble of re-establishing the communication. As a result, the burden on the user at the time of communication is greatly reduced, and since communication can be easily established, there is an effect that the probability of establishing communication can be improved.The
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention.
FIG. 2 is a diagram showing an operation of the communication service system shown in FIG.
3 is a diagram showing an operation of the communication service system shown in FIG. 1. FIG.
4 is a diagram showing an operation of the communication service system shown in FIG. 1. FIG.
FIG. 5 is a diagram showing an operation of the communication service system shown in FIG. 1;
6 is a diagram showing an operation of the communication service system shown in FIG. 1. FIG.
7 is a diagram showing an operation of the communication service system shown in FIG.
8 is a diagram showing an operation of the communication service system shown in FIG.
FIG. 9 is a diagram showing an operation of the communication service system shown in FIG.
10 is a diagram showing an operation of the communication service system shown in FIG. 1. FIG.
11 is a diagram showing an operation of the communication service system shown in FIG.
FIG. 12 is a block diagram showing a configuration of another embodiment of the present invention.
13 is a diagram showing an operation of the communication service system shown in FIG.
14 is a diagram showing an operation of the communication service system shown in FIG.
[Explanation of symbols]
1 Communication server
11 ... Presence Management Department
12 ... Presence agent
13 ... Maintenance Operation Department
14 ... User information database
2. Service providing server
21 ... VoIP Service Department
22 ... Mail Service Department
23 ... Chat service department
24 ... IM Service Department
25. Content distribution service department
A: User terminal
31 ... Web browser
32 ... VoIP terminal
B ... User terminal
41 ... Web browser
42 ... VoIP terminal
5 ... Server for providing advertisement services
51 ・ ・ ・ Advertiser Portal
52. Application for providing advertisement services
53 ... Advertising pool DB (database)

Claims (4)

A communication service system that controls communication means on behalf of a party that attempts communication using a communication terminal,
The communication service system includes:
A terminal status detecting means for detecting the status of said communication terminal,
With reference to the detection result of the terminal status detection means, a determination means for determining whether the communication means selected from the communication terminal on the caller side can be used on the communication terminal on the callee side,
As a result of determination by the determination unit, if usable, a terminal selection unit that selects a communication terminal on the receiving side when using the selected communication unit; and
Address acquisition means for acquiring terminal addresses of the communication terminals on the caller side and the callee side;
A communication start means for starting communication by the selected communication means between the terminal addresses of the caller side and the callee side communication terminals;
When the terminal status detection unit detects that the communication terminal is down, the terminal selection unit selects another usable communication terminal and switches to the selected communication terminal to continue communication. communication service system characterized in that a means. Communication means that can be used by both parties from predefined communication means candidates when the terminal selection means cannot select another usable communication terminal when the communication terminal is down detected. Communication means selection means for selecting
The communication service system according to claim 1, wherein a communication terminal capable of using the communication means selected by the communication means selection means is selected by the terminal selection means . A communication service program that controls a communication means on behalf of a party that attempts communication using a communication terminal,
The communication service program is:
A terminal state detection process of detecting the status of said communication terminal,
With reference to the detection result of the terminal status detection process, a determination process for determining whether the communication means selected from the communication terminal on the caller side can be used on the communication terminal on the callee side;
As a result of determination by the determination process, if it is usable, a terminal selection process for selecting a communication terminal on the receiving side when using the selected communication means; and
Address acquisition processing for acquiring terminal addresses of the communication terminals on the caller side and the receiver side;
A communication start process for starting communication by the selected communication means between the terminal addresses of the caller side and the callee side communication terminals;
When the terminal status detection process detects that the communication terminal is down, the terminal selection process selects another usable communication terminal and switches to the selected communication terminal to continue communication. A communication service program that causes a computer to perform processing . Communication means that can be used by both parties from predefined communication means candidates when the terminal selection means cannot select another usable communication terminal when the communication terminal is down detected. A communication means selection process for selecting
The communication service program according to claim 3 , wherein a communication terminal that can use the communication means selected by the communication means selection process is selected by the terminal selection process .

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