Abstract:
Call control of a mobile telephone device and so on used for a plurality of carriers (telephone lines) is provided for acquisition of carrier information and notification thereof to improve serviceability, wherein carrier information of a call destination is stored, carrier information is exchanged during the telephone call, and, when notified carrier information is different from stored carrier information, which is notified or a connection is suppressed. In addition, when a carrier of a call destination is not a specific carrier, after which is notified and carrier information of the call destination is also notified to an outgoing call side, a connection with the call destination is initiated at a request from the outgoing call side.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    This application is a continuation of International Application No. PCT/JP2006/305510, filed on Mar. 20, 2006, now pending, herein incorporated by reference. 
     
    
     BACKGROUND OF THE INVENTION 
       [0002]    1. Field of the Invention 
         [0003]    The present invention relates to acquisition of telephone line (carrier) information and to call control. Specifically, the present invention relates to a mobile telephone device that uses acquired carrier information of an opposite destination for call control, a communication server apparatus, a control method thereof, a control program and a recording medium. 
         [0004]    2. Description of the Related Art 
         [0005]    In a mobile telephone device, a telephone line (carrier) used by a mobile telephone device of the other end of the line can be surmised from a telephone number of the opposite destination. Or in a mobile telephone device, it is known as mechanism of outgoing call restriction corresponding to a telephone line to restrict international roaming, an out of town call, a cap of telephone call rates, an outgoing call except a station-to-station call, etc. By utilizing them, a connection not intended by a user can be prevented at an outgoing caller side. 
         [0006]    Concerning a telephone line, in Japanese Patent Application Laid-open Publication No. 2001-36641 (paragraph No. 0036, FIG. 1, etc.), a technique on a public telephone network and an exchanger thereof is disclosed, for example; a database storing information whether an outgoing caller and an incoming caller subscribe to an internet service, a kind of a telephone, etc. is accessed, and whether an internet communication network or the public telephone network is passed is selected by subscriber information obtained from the database on the basis of a telephone number of the incoming caller that is dialed by the outgoing caller. 
         [0007]    By registration of a telephone number of a specific the other end, a carrier provides services such as call rates and discount for the telephone number. When a carrier of a connection destination is different from a carrier of an outgoing caller side, the case may occur that conditions set by the carrier are different so that out of discount, decrease of discount, etc. occur. 
         [0008]    On the basis of such condition, a user inquires a used carrier from a call destination, searches a carrier from a telephone number, certifies by a carrier in advance whether a specific service can be received and registers information on the carrier with the telephone number. Such operation is troublesome for a user who has many connection destinations. 
         [0009]    Because of introduction of Number Portability which allows mobile phone users to continue to use the same telephone number even after changing carriers, it is assumed that even if a telephone number is the same, a carrier except a carrier assumed from the telephone number executes a call connection. Therefore, a user may not receive a service with an expecting condition of a carrier. 
         [0010]    According to such problems, there is no disclosure or suggestion in Japanese Patent Application Laid-open Publication No. 2001-36641, and there is no disclosure or suggestion about structure and so on to solve the same. 
       SUMMARY OF THE INVENTION 
       [0011]    An object of the present invention relates to a mobile telephone device used for a plurality of carriers (telephone lines) and is to improve serviceability by acquisition of carrier information and notification thereof. 
         [0012]    Another object of the present invention relates to a mobile telephone device used for a plurality of lines and is to enable call control by notification of carrier information. 
         [0013]    The present invention relates to a mobile telephone device comprising structure that by storing carrier information of a call destination and transmitting and receiving carrier information in a call, if notified carrier information is different from the stored carrier information, which is notified or a connection is stopped. From the structure, the objects described above can be achieved. 
         [0014]    The present invention relates to a communication server apparatus intervening between the mobile telephone devices, comprising structure that if a carrier of a call destination is not a specific carrier, which is notified to an outgoing call side and carrier information of the carrier is notified thereto, after that, a connection with the call destination is made to start by a request from the outgoing call side. From such structure, the objects described above can be achieved. 
         [0015]    To achieve the above objects, according to a first aspect of the present invention there is provided a mobile telephone device comprising: a storage part that stores carrier information of a call destination; a determination part that determines in a call whether carrier information notified from the call destination coincides with carrier information which exists in the storage part; and a notification part that notifies the determination if the determination part determines that the carrier information notified from the call destination is different from the carrier information in the storage part. In the first aspect, carrier information is transmitted and received between mobile telephone devices making a call. By notification of the carrier information, a user can determine whether a call is made. 
         [0016]    In the above mobile telephone device, preferably, the notification part may comprise a display part displaying the carrier information notified from the call destination. 
         [0017]    Preferably, the above mobile telephone device may comprise a call deterrence part that suppresses a call if the carrier information notified from the call destination is different from the carrier information in the storage part. 
         [0018]    Preferably, the above mobile telephone device may comprise a storing control part that writes the carrier information notified from the call destination into the storage part or updates the storage part by a connection with the call destination. 
         [0019]    To achieve the above objects, according to a second aspect of the present invention there is provided a control method of a mobile telephone device comprising: storing carrier information of a call destination in a storage part; determining in a call whether carrier information notified from the call destination coincides with carrier information which exists in the storage part; and notifying the determination if it is determined that the carrier information notified from the call destination is different from the carrier information in the storage part. From such structure, the above objects can be achieved. 
         [0020]    Preferably, the above control method of a mobile telephone device may comprising: displaying the carrier information notified from the call destination on a display part. 
         [0021]    Preferably, the above control method of a mobile telephone device may comprise: suppressing a call if the carrier information notified from the call destination is different from the carrier information in the storage part. 
         [0022]    Preferably, the above control method of a mobile telephone device may comprise: writing the carrier information notified from the call destination into the storage part or updating the storage part by a connection with the call destination. 
         [0023]    To achieve the above objects, according to a third aspect of the present invention there is provided a computer-readable recording medium storing a control program of a mobile telephone device, the program comprising the steps of: storing carrier information of a call destination in a storing part; determining in a call whether carrier information notified from the call destination coincides with carrier information which exists in the storage part in a call; and notifying the determination if it is determined that the carrier information notified from the call destination is different from the carrier information in the storage part. From such structure, the above objects can be achieved. 
         [0024]    In the above recording medium, preferably, the program may comprise the step of displaying the carrier information notified from the call destination on a display part. 
         [0025]    In the above recording medium, preferably, the program may comprise the step of suppressing a call if the carrier information notified from the call destination is different from the carrier information in the storage part. 
         [0026]    In the above recording medium, preferably the program may comprise the step of writing the carrier information notified from the call destination into the storage part or updating the storage part by a connection with the call destination. 
         [0027]    To achieve the above objects, according to a fourth aspect of the present invention there is provided a mobile telephone device comprising: a storage part that stores carrier information; and a notification part that notifies in a call the carrier information existing in the storage part to a call destination. In the aspect, carrier information is notified to an outgoing call side in a call. A change of a carrier and so on can be notified to the other end and call serviceability by the medium of carrier information can be enhanced. 
         [0028]    Preferably, the above mobile telephone device may comprise a setting part that sets whether the carrier information is notified to the call destination, wherein the notification part notifies the carrier information or rejects notification of the carrier information by the setting of the setting part. 
         [0029]    To achieve the above objects, according to a fifth aspect of the present invention there is provided a communication server apparatus that is connected to a mobile telephone device, comprising: a notification part that specifies a carrier of a receiving side designated by an outgoing call side and notifies carrier information of the receiving side to the outgoing call side. In the aspect, carrier information is provided from the communication server apparatus intervening between the mobile telephone devices, and call serviceability by the medium of a carrier can be enhanced. 
         [0030]    preferably, the above communication server apparatus may comprise a connection part that connects the outgoing call side with the receiving side after the notification part notifies the carrier information. 
         [0031]    To achieve the above objects, according to a sixth aspect of the present invention there is provided a control method of a mobile telephone device, comprising: storing carrier information in a storage part; and notifying in a call the carrier information existing in the storage part to a call destination. From such structure, the above objects can be achieved. 
         [0032]    Preferably, the above control method of a mobile telephone device may comprise: setting whether the carrier information is notified to the call destination; and notifying the carrier information or rejecting notification of the carrier information by the setting. 
         [0033]    To achieve the above objects, according to a seventh aspect of the present invention there is provided a control method of a communication server apparatus connected to a mobile telephone device, the method comprising: specifying a carrier of a receiving side designated by an outgoing call side and notifying carrier information of the receiving side to the outgoing call side. From such structure, the above objects can be achieved. 
         [0034]    Preferably, the above control method of a communication server apparatus may comprise: connecting the outgoing call side with the receiving side after notification of the carrier information. 
         [0035]    To achieve the above objects, according to an eighth aspect of the present invention there is provided a computer-readable recording medium storing a control program of a mobile telephone device, the program comprising the steps of: storing carrier information in a storage part; and notifying in a call the carrier information existing in the storage part to a call destination. From such structure, the above objects can be achieved. 
         [0036]    In the above recording medium, preferably the program may comprise the steps of: setting whether the carrier information is notified to the call destination; and notifying the carrier information or rejecting notification of the carrier information by the setting. 
         [0037]    To achieve the above objects, according to a ninth aspect of the present invention there is provided a computer-readable recording medium storing a control program of a communication server apparatus connected to a mobile telephone device, the program comprising the step of: specifying a carrier of a receiving side designated by an outgoing call side and notifying carrier information of the receiving side to the outgoing call side. From such structure, the above objects can be achieved 
         [0038]    In the above recording medium, preferably the program may comprise the step of: connecting the outgoing call side with the receiving side after notification of the carrier information. 
         [0039]    The features and advantages of the present invention are as follows. 
         [0040]    (1) Concerning a mobile telephone device used for a plurality of lines (carriers), carrier information of a call destination can be obtained at an outgoing call side, a call can be made according to a carrier of the outgoing call side or an opposite destination, and convenience thereof can be enhanced. 
         [0041]    (2) A call can be controlled like connection deterrence according to notified carrier information. Thus, convenience of a call can be enhanced. 
         [0042]    (3) By notification of carrier information, a service set by each carrier can be received. For example, when a service of discount call rates is used, it can be known that whether a call applies to discount in starting the call even if a call opposition uses Number Portability and changes one&#39;s carrier to another one with the same telephone number. Thus, convenience of a call by the medium of a carrier, for example by preventing increase of call rates for a call out of discount with no intension, can be enhanced. 
         [0043]    Other objects, features and advantages of the present invention will be more clear by referring to the accompanying drawings and each embodiment. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0044]      FIG. 1  depicts a call control system according to a first embodiment; 
           [0045]      FIG. 2  depicts structure of a mobile telephone device; 
           [0046]      FIG. 3  depicts structure of an aspect unit of a mobile telephone device; 
           [0047]      FIG. 4  is a flowchart showing processing procedure of a mobile telephone device at an outgoing call side; 
           [0048]      FIG. 5  is a flowchart showing processing procedure of the mobile telephone device at the outgoing call side; 
           [0049]      FIG. 6  depicts a message display screen; 
           [0050]      FIG. 7  depicts a message display screen; 
           [0051]      FIG. 8  depicts a message display screen; 
           [0052]      FIG. 9  depicts a message display screen; 
           [0053]      FIG. 10  depicts a dialog display screen; 
           [0054]      FIG. 11  depicts a dialog display screen; 
           [0055]      FIG. 12  is a flowchart showing processing procedure of a mobile telephone device at a receiving side; 
           [0056]      FIG. 13  depicts a dialog display screen; 
           [0057]      FIG. 14  depicts a call control system and an example of processing contents according to a second embodiment; 
           [0058]      FIG. 15  depicts a call control system according to a third embodiment; 
           [0059]      FIG. 16  depicts a call control system according to a fourth embodiment; 
           [0060]      FIG. 17  depicts a call control system according to other embodiments; and 
           [0061]      FIG. 18  depicts a call control system according to other embodiments. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     First Embodiment 
       [0062]    A first embodiment of the present invention will be described with reference to  FIGS. 1 ,  2  and  3 .  FIG. 1  depicts a call control system according to a first embodiment,  FIG. 2  depicts structure of a mobile telephone device and  FIG. 3  depicts structure of an aspect unit of the mobile telephone device. 
         [0063]    In a call control system  21  of the first embodiment, about mobile telephone devices  61  and  62  which are mediated through a mobile telephone communication network  41  as a communication server apparatus, by notification of carrier information, in case that the notified carrier information is different from registered carrier information, notification thereof and/or control of connection deterrence are executed. Here, the mobile telephone communication network  41  is all of communication line networks provided by a lot of telecommunication companies. Carrier information is information representative of a communication line provided by a telecommunication company. 
         [0064]    In the call control system  21 , as shown in  FIG. 1 , an outgoing call  8  of the mobile telephone device  61  at an outgoing call side is received by the mobile telephone communication network  41 , and the mobile telephone device  62  of an incoming call side (the other end of the line) receives an incoming call  10  from the mobile telephone communication network  41 . With this occasion, after carrier information notification  12  sent from the mobile telephone device  62  is transferred to the mobile telephone device  61  via the mobile telephone communication network  41 , call connections  14  and  16  are executed. 
         [0065]    Carrier information of the other end of the line is registered in the mobile telephone device  61 . If notified carrier information is different from carrier information of the other end of the line that is registered in the mobile telephone device  61 , notification to the mobile telephone device  61  side that carrier information is different and/or deterrence of connection to the mobile telephone device  62  is executed. The notification of different carrier information is executed by, for example, screen display or an alarm. The notification and connection deterrence can be changed by setting at the mobile telephone device  61  side. 
         [0066]    In such call control system  21 , as shown in  FIG. 2 , the mobile telephone devices  61  and  62  include, for example, a control part  102 , and, as various function units, a phone book setting part  104 , a phone book storing part  106 , an alarm setting part  108 , an alarm notification part  110 , a speaker  112 , a communication control part  114 , a carrier information notification setting part  116 , a carrier information storing part  118 , a carrier information sending part  120 , a display  122 , a storage  124 , an operation input part  126 , etc. 
         [0067]    The control part  102  is configured by a CPU (Central Processing Unit) and soon, and controls various function parts such as the phone book setting part  104  by executing a program stored in the storage  124 . The control part  102  is also a determination part determining whether carrier information notified from a call destination coincides with carrier information in the carrier information storing part  118  by comparison of the both, and executes control based on the determination. 
         [0068]    The phone book setting part  104  sets information on the other end of the line such as a name, a telephone number and a mail address by input of the operation input part  126  on the basis of control of the control part  102 . The phone book storing part  106  is configured, for example, by a non-volatile memory, and stores information on the other end of the line set in the phone book setting part  104  by control of the control part  102 . 
         [0069]    The alarm setting part  108  sets whether an alarm is generated or not by control of the control part  102 . The alarm notification part  110  is a notification part notifying an alarm about carrier information, and outputs an alarm signal given from the control part  102 . The speaker  112  converts the alarm signal into a voice. 
         [0070]    The communication control part  114  is controlled by the control part  102 , includes an antenna  128 , sends a wireless signal to the mobile telephone communication network  41 , and receives the wireless signal form the mobile telephone communication network  41 . The communication control part  114  sends a call signal and a packet data signal superimposed on a carrier wave as a wireless signal, and reproduces the call signal and the packet data signal from the received wireless signal. The communication control part  114  also configures a call deterrence part because of call deterrence operation thereof. 
         [0071]    The carrier information notification setting part  116  is controlled by the control part  102 , and sets carrier information to be notified to the other end of the line. The carrier information storing part  118  is a storage storing carrier information, is configured, for example, by a non-volatile memory, and stores carrier information set in the carrier information notification setting part  116  by control of the control part  102 . In this case, the carrier information storing part  118  and the phone book storing part  106  are related correspondingly by the other end of the line, and for example, a registration table in correspondence relationship is included. That is, the carrier information storing part  118  and the phone book storing part  106  are in relationship that if the other end of the line is determined, a telephone number and mail address are read out from the phone book storing part  106  and carrier information is read out from the carrier information storing part  118 . Then, it may be structured that the carrier information storing part  118  is united with the phone book storing part  106 , and carrier information is stored by a telephone number. 
         [0072]    The carrier information sending part  120  is a notification part notifying carrier information to a call destination, is controlled by the control part  102 , reads out from the carrier information storing part  118  carrier information to be sent when a call is incoming, and notifies the carrier information to the communication control part  114 . The display  122  is a notification part notifying carrier information and information on the carrier information, is configured, for example, by an LCD (Liquid Crystal Display), is controlled by the control part  102  and displays carrier information and so on that are outputted from the carrier information sending part  120 . 
         [0073]    The storage  124  is configured by a ROM (Read-Only Memory)  1241 , a RAM (Random-Access Memory)  1242 , a non-volatile memory  1243 , etc. The ROM  1241  stores a carrier information notification program  1281 , a carrier information display program  1282 , a connection control program  1283  and other programs  1284 . The RAM  1242  configures a working area. In the embodiment, the phone book storing part  106  and the carrier information storing part  118  are configured separately from the storage  124 . It may be configured that the phone book storing part  106  and the carrier information storing part  118  are united to the non-volatile memory  1243  in the storage  124 , or are stored in a portable recording medium such as a SIM (Subscriber Identity Module) card to be attachable and detachable to the mobile telephone devices  61  and  62 . 
         [0074]    The operation input part  126  is configured by a keyboard and so on used for information input to the control part  102 , and includes symbol keys such as numerals and characters, cursor keys for operating a cursor displayed on the display  122  and a decision key corresponding to a message of a dialog display screen. 
         [0075]    In the mobile telephone devices  61  and  62 , first and second housings  130  and  132  are linked by a hinge part  134  to be openable and closable as shown in  FIG. 3 . In the housing  130 , symbol keys  136 , cursor keys  138 , a decision key  140 , a connection start key  142 , an end key  144  of the operation input part  126 , and a microphone  146 , etc. are installed. In the housing  132 , the display  122 , the speaker  112  and the antenna  128 , etc. are installed. 
         [0076]    A process of the mobile telephone device  61  at an outgoing call side in the call control system  21  will be described with reference to  FIG. 4 .  FIG. 4  is a flowchart showing processing procedure of the mobile telephone device  61  at an outgoing call side. 
         [0077]    In the mobile telephone device  61 , a telephone number of the other end of the line and carrier information of a connection destination are set by a user. 
         [0078]    To start a call with an opposite destination, the mobile telephone device  61  is started up, a telephone number of the other end of the line is obtained from the phone book storing part  106  and if carrier information exists in the carrier information storing part  118 , the carrier information is obtained (step S 1 ). The telephone number and the carrier information are displayed on the display  122  (step S 2 ). An outgoing call is started, a call connection with the other end of the line is waited (step S 3 ), in case of a stop, a call connection process is canceled and in case of a connection, reception of carrier information data from the other end of the line is waited (step S 4 ). If data reception is succeeded, the carrier information received from the other end of the line and the carrier information obtained from the carrier information storing part  118  are compared (step S 5 ) and as a result of the comparison, if the carrier information is different, it is displayed on a screen of the display  122  that the carrier information is different (step S 6 ). In this case, on the screen of the display  122 , a message  206  thereabout is displayed as shown in  FIG. 6 . A user of the mobile telephone device  61  can know that a carrier of the other end of the line is different, from the message  206  in advance of a call. 
         [0079]    Whether an alarm is set is determined (step S 7 ), if it is set (YES of step S 7 ), an alarm is given from the speaker  112  (step S 8 ) and it is notified that a carrier of the other end of the line is different by the alarm. A call is made (step S 9 ), if the call is ended, carrier information in the carrier information storing part  118  is updated (step S 10 ) and the process is ended. About the updating of carrier information, if carrier information is not stored in the carrier information storing part  118  first, the process is ended by writing carrier information into the carrier information storing part  118  with a call ended. 
         [0080]    In step S 4 , if carrier information data from the other end of the line is not received thus communication is missed or time for the communication is up, it is displayed on the screen of the display  122  that carrier is unknown (Step S 11 ). In this case, on the display screen of the display  122 , as shown in  FIG. 7 , a message  210  thereabout is displayed and a user of the mobile telephone  61  can know that a carrier of the other end of the line is unknown, from the message  210  in advance of a call. 
         [0081]    In step  5 , as a result of the comparison of the carrier information, if the carrier information coincides, it is displayed on the screen of the display  122  that the carrier coincides (step S 12 ). In this case, on the display  122 , as shown in  FIG. 8 , a display screen  212  showing the same carrier is displayed, then as shown in  FIG. 9 , a display screen  216  of a carrier is displayed. A user of the mobile telephone  61  can know that a carrier of the other end of the line coincides, from a message  214  displayed on the display screen  212 , and can know a carrier from a message  218  concerning carrier displayed on the screen display  216  in advance of a call. 
         [0082]    If there is no carrier information of the other end of the line in the carrier information storing part  118 , carrier information is stored in the carrier information storing part  118  with a call ended. 
         [0083]    In this case, as shown in  FIG. 5 , if the carrier information is different as a result of the comparison of the carrier information, it may be processed that a call deterrence process (step S 13 ) is executed and a start of a call is ended. 
         [0084]    In this case, in the call deterrence process, a dialog display screen  224  ( FIG. 10 ) is displayed on the display  122 , an inquiry whether a call is started or not is executed (step S 14 ), if a call is started, the process returns to step S 9  ( FIG. 4 ) and if a call is ended, a call can be ended by pressing the end key  144  of the operation input part  126 . 
         [0085]    At a start of a call, if a carrier is different, as shown in  FIG. 6 , a display screen  202  is displayed on the display  122 . On the display screen  202 , the message  204  representing “calling” and the message  206  concerning a carrier are displayed. In this case, in the message  206 , “A carrier of the other end of the line is different from setting of the phone book.” is displayed. 
         [0086]    If a carrier is unknown, as shown in  FIG. 7 , a display screen  208  is displayed on the display  122 . On the display screen  208 , the message  204  representing “calling” and the message  210  concerning a carrier are displayed. In this case, in the message  210 , “A carrier of the other end of the line is unknown.” is displayed. 
         [0087]    If a carrier of a connection destination is the same, as shown in  FIG. 8 , a display screen  212  is displayed on the display  122 . On the display screen  212 , the message  204  representing “calling” and the message  214  concerning a carrier are displayed. In this case, in the message  214 , 
         [0088]    “A carrier of the other end of the line is the same.” is displayed. 
         [0089]    If a carrier of a connection destination is the same, as shown in  FIG. 9 , a display screen  216  is displayed on the display  122 . On the display screen  216 , the message  204  representing “calling” and the message  218  concerning a carrier are displayed. In this case, in the message  218 , information representing a carrier is displayed. And in this case, in a pict area  220 , an icon  222  representing calling is displayed. 
         [0090]    On a dialog display screen  224 , as shown in  FIG. 10 , a message  226  inquiring a call is displayed, and buttons  228  and  230  representing “YES” and “NO” respectively are displayed. In this case, the message  226 , for example, displays “Is a call started?”. As a response of the dialog, by assigning the end key  144  to the button  230  for example, a call can be ended with a press of the end key  144 . 
         [0091]    Concerning change of an automatic or a manual, for example, as shown in  FIG. 11 , it may be configured that a dialog display screen  232  is displayed on the display  122 , on the dialog display screen  232 , a message  234  that carrier information is changed and buttons  236  and  238  for determining an automatic or a manual are displayed, then from selection thereof, an automatic or a manual change is set. 
         [0092]    A process of the mobile telephone device  62  at a receiving side of the call control system  21  will be described with reference to  FIG. 12 .  FIG. 12  is a flowchart showing processing procedure of the mobile telephone device  62  at a receiving side. 
         [0093]    In the mobile telephone device  62  at the receiving side, an incoming call is waited (step S 21 ). If an incoming call arrives, it is confirmed whether sending carrier information is permitted (step S 22 ). If the sending is permitted, it is confirmed whether an individual setting for the other end of the line (an outgoing caller) is executed in the phone book storing part  106  (step S 23 ). If the setting is done, it is confirmed whether sending permission setting of carrier information for the outgoing caller is set (step S 24 ). If the sending permission is set, carrier information is sent to the mobile telephone device  61  that is the outgoing caller side (step S 25 ), and a call is started (step S 26 ). 
         [0094]    In step S 22 , if sending carrier information is not permitted, or in step S 24 , if there is no sending permission setting of carrier information for the outgoing caller, a call is started (step S 26 ). In step S 23 , if an individual setting of an outgoing call permission for the outgoing caller is not set, the process moves to step S 25 , carrier information is sent (step S 25 ) and a call is started. 
         [0095]    For a normal call, if inconsistency of carrier information causes outgoing call restriction or call deterrence, a call function is prevented when an emergency call. Therefore, it may be configured that after display of carrier information, a dialog display screen  240  is displayed on the display  122  as shown in  FIG. 13 , for example in case of a call outgoing in a predetermined procedure, a message  242  of cancelling connection deterrence is displayed on the dialog display screen  240 , buttons  244  and  246  for determining whether to cancel or not are displayed, and by selection of these responses (YES and NO), outgoing call restriction by a carrier of the other end of the line is canceled then a start of a call is preceded. 
         [0096]    As described above, the processing contents are summarized as follows. 
         [0097]    (1) A user sets carrier information of a connection destination in the carrier information storing part  118  in response to registration of a name, a telephone number, etc. of the other end of the line in the phone book storing part  106  of the mobile telephone devices  61 ,  62 , etc. 
         [0098]    (2) In a connection with the mobile telephone devices  61  and  62 , in an outgoing call, carrier information sent from the mobile telephone device  62  is transferred to the mobile telephone device  61  at an outgoing call side by the medium of the mobile telephone communication network  41 . 
         [0099]    (3) At the mobile telephone device  61  side, carrier information sent from the mobile telephone device  62  is displayed on the display  122 . The sent carrier information is compared with carrier information of a connection destination stored in the carrier information storing part  118  at the mobile telephone device  61  side. If carrier information is different, an alarm is given at a start of a call, and it is notified that the carrier information is different. 
         [0100]    (4) At an end of a call, input carrier information can be reflected automatically for utilizing next communication by updating registration information in the carrier information storing part  118  or, newly registering information and so on, from carrier information notified from the other end of the line. Thus, a user needs not to set manually and the latest carrier information can be maintained. 
         [0101]    (5) If an incoming call side does not want to inform carrier information to an outgoing caller side, carrier information can be kept secret. This setting may be configured that notification permission or notification rejection is set toward a specific the other end of the line, a group, or all of them that are stored in the phone book storing part  106 . In this case, it may be configured that about carrier information, setting information is held at the mobile telephone communication network  41  by using a browser and so on and notification deterrence of carrier information to an outgoing caller is executed at the mobile telephone communication network  41  side. 
       Second Embodiment 
       [0102]    A second embodiment of the present invention will be described with reference to  FIG. 14 .  FIG. 14  depicts a call control system and an example of processing contents according to the second embodiment. 
         [0103]    In a call control system  22  of this embodiment, about mobile telephone devices  61  and  62  which use a mobile telephone communication network  42  as a communication server apparatus, it is executed that notification of carrier information of the other end of the line from the mobile telephone communication network  42  and/or control of connection deterrence. In the call control system  22 , since the mobile telephone devices  61  and  62  shown in  FIGS. 2 and 3  are used and structure thereof is as described above, the explanation is omitted. 
         [0104]    In the call control system  22 , a database  152  is installed along with a control part  150  in the mobile telephone communication network  42 . The control part  150  is configured by a computer. Specific connection destination designation information is stored in the database  152 . The specific connection destination designation is, for example, that the mobile telephone device  61  subscribes to a station-to-station discount service and so on. Thus, in the mobile telephone communication network  42 , when an outgoing call  154  is received from the mobile telephone device  61 , the database  152  is retrieved as to an outgoing caller and it is retrieved whether the mobile telephone device  61 , which is an outgoing caller, is registered as a specific connection destination or not. 
         [0105]    If the mobile telephone device  61  is registered as a specific connection destination, a carrier is checked by referring to the database  152  (step S 31 ) and it is specified which carrier the mobile telephone device  62  of the connection destination belongs to (step S 32 ). If a specified carrier is not a carrier for receiving a specific service, connection guidance is sent from the mobile telephone communication network  42  to the mobile telephone device  61  (step S 33 ). The mobile telephone device  61  receives guidance voice notification  156  from the mobile telephone communication network  42 . 
         [0106]    In the mobile telephone device  61 , for starting a connection after confirmation of the guidance voice notification  156  or by skipping the guidance voice, the connection start key  142  ( FIG. 3 ) of the operation input part  126  ( FIG. 2 ) of the mobile telephone device  61  is pressed. From this, the mobile telephone device  61  starts a connection with the mobile telephone device  62  at an incoming call side via the mobile telephone communication network  42  (step S 34 ) so carrier information notification  158  of the mobile telephone device  62  of a call connection destination is sent from the mobile telephone communication network  42  and call connections  160  and  162  are established between the mobile telephone devices  61  and  62 . After the start of the call, carrier information of a connection destination is displayed on a screen of a display  122  of the mobile telephone device  61  based on the carrier information notification  158  notified from the mobile telephone communication network  42  ( FIG. 9 ). 
         [0107]    In this case, for example, in case of a carrier out of the station-to-station discount service as a result of retrieval, it may be configured that voice guidance for this call to be out of a discount service is published to an outgoing caller. As selection designation of carrier condition, whether the domestic or the foreign may be selection condition or call deterrence and so on can be executed with condition of a foreign roaming call. 
         [0108]    After a call is ended, carrier information of a connection destination can be reflected in the phone book storing part  106  automatically. From this, there is no need to set manually individually and keeping the latest state automatically can be done. An automatic or a manual change can be designated by setting. 
         [0109]    In the second embodiment, for a normal call, if inconsistency of carrier information causes outgoing call restriction or call deterrence, a call function is prevented when an emergency call. In case of a call outgoing in predetermined procedure, it may be configured that outgoing call restriction by a carrier of the other end of the line is canceled then a start of a call is preceded. 
         [0110]    In the second embodiment, if carrier information is not wanted to be informed to an outgoing caller side, carrier information can be kept secret. This setting may be configured that notification permission or notification rejection is set toward a specific the other end of the line, a group, or all of them that are stored in the phone book storing part  106 . In this case, it may be configured that about carrier information, setting information is held at the mobile telephone communication network  42  side by using a browser and so on and notification deterrence of carrier information to an outgoing caller is executed at the mobile telephone communication network  42  side. 
       Third Embodiment 
       [0111]    A third embodiment of the present invention will be described with reference to  FIG. 15 .  FIG. 15  depicts a call control system according to a third embodiment. Same reference numerals are used in  FIG. 15  for the same constituents in  FIG. 14 . 
         [0112]    In this call control system  23 , a plurality of mobile telephone devices  621 ,  622  and  623  are assumed as a call destination of a different carrier for a mobile telephone device  61 . Between the mobile telephone device  61  and the mobile telephone devices  621 - 623 , a mobile telephone communication network  43  and a line exchanger  70  are provided as a communication server apparatus, and communication network systems  71 ,  72  and  73  are provided for every carrier to which the mobile telephone devices  621 - 623  subscribe. Here, as to “other carriers” and “one&#39;s own carrier”, a carrier which is the same as a carrier to which the mobile telephone device  61  subscribes is called one&#39;s own carrier, and a carrier which is different from that is called other carriers. 
         [0113]    The mobile telephone communication network  43  is provided with a control part  150  as well as the mobile telephone communication network  42  of the second embodiment. For the control part  150 , a carrier retrieval part  164 , a guidance notification part  166 , a connection destination designation retrieval part  168  and a call connection part  170  are provided. The call connection part  170  comprises call deterrence part because of including a call deterrence function. 
         [0114]    In the mobile telephone communication network  43 , an outgoing call  154  is received from the mobile telephone device  61  and a carrier is retrieved in the carrier retrieval part  164 . The connection destination designation retrieval part  168  accesses the database  152 , and connection destination designation information is retrieved. A result thereof is notified to the guidance notification part  166 . If the retrieved carrier is a carrier out of contract, guidance voice notification  156  indicating that effect is transmitted to the mobile telephone device  61 . If there is no request for connection deterrence from the mobile telephone device  61  or the mobile telephone device  61  is a connection designation destination, connection permission is sent to the call connection part  170 , then call connections  160  and  162  between the mobile telephone device  61  and, in this case, the mobile telephone device  621  are established. Other structure is the same as the second embodiment, and description thereof is omitted. 
       Fourth Embodiment 
       [0115]    A fourth embodiment of the present invention will be described with reference to  FIG. 16 .  FIG. 16  depicts a call control system according to the fourth embodiment. Same reference numerals are used in  FIG. 16  for the same constituents in  FIG. 15 . 
         [0116]    In a call control system  24 , a line exchanger  70  and an assist server apparatus  180  are disposed instead of the above described mobile telephone communication network  42  or the mobile telephone communication network  43 . The assist server apparatus  180  is configured by a computer. In the embodiment, a CPU  182 , a ROM  184 , a RAM  186 , a communication control part  188  and a storage  190  are provided. Since the communication control part  188  includes a call deterrence function, the communication control part  188  configures a call deterrence part. 
         [0117]    The CPU  182  starts up an operating system (OS) stored in the storage  190  by an operating system (OS) start up program  1842  stored in the ROM  184  and executes various programs stored in the storage  190 , then controls the communication control part  188  and so on. The RAM  186  is used for a working area. The communication control part  188  is controlled by the CPU  182  and switches the line exchanger  70 . 
         [0118]    Various programs and the above described OS are stored in the storage  190 . For example, the storage  190  is configured by a hard disk device and stores a carrier determination program  1901 , a carrier information notification program  1902  and a database  1903 . Connection destination information such as carrier information of a connection destination is stored in the database  1903 . 
         [0119]    From such structure, by execution of the carrier determination program  1901 , a carrier is determined, connection destination information stored in the database  1903  is accessed and if a carrier of a connection destination is different from that of an outgoing call side, it is notified by execution of the carrier information notification program  1902  that carrier information is different. 
       Other Embodiments 
       [0120]    In the above embodiment, the mobile telephone devices  61 ,  62 , etc. are exemplified and described. The present invention can apply to a call control system  25  applied to call control between personal digital assistants (PDA)  631  and  632  as shown in  FIG. 17 , for example, and a call control system  26  applied to call control between personal computers (PC)  641  and  642  as shown in  FIG. 18 . As the call control system, the present invention applies to a call connection between a mobile telephone device and a PDA, between a mobile telephone device and a PC and between a PDA and a PC, and is not limited by the structure of the above embodiments. In  FIGS. 17 and 18 , the same numerals are given to the same part as  FIG. 1  or  14 , and description thereof is omitted. 
       Other Inventive Matters 
       [0121]    Technical ideas extracted from the above-mentioned embodiments are enumerated as follows. 
         [0122]    (ADDITIONAL REMARK 1) A mobile telephone device comprising: 
         [0123]    a storage part that stores carrier information of a call destination; 
         [0124]    a determination part that determines in a call whether carrier information notified from the call destination coincides with carrier information which exists in the storage part; and 
         [0125]    a notification part that notifies the determination if the determination part determines that the carrier information notified from the call destination is different from the carrier information in the storage part. 
         [0126]    (ADDITIONAL REMARK 2) The mobile telephone device of ADDITIONAL REMARK 1, wherein 
         [0127]    the notification part comprises a display part displaying the carrier information notified from the call destination. 
         [0128]    (ADDITIONAL REMARK 3) The mobile telephone device of ADDITIONAL REMARK 1, comprising: 
         [0129]    a call deterrence part that suppresses a call if the carrier information notified from the call destination is different from the carrier information in the storage part. 
         [0130]    (ADDITIONAL REMARK 4) The mobile telephone device of ADDITIONAL REMARK 1, comprising: 
         [0131]    a storing control part that writes the carrier information notified from the call destination into the storage part or updates the storage part by a connection with the call destination. 
         [0132]    (ADDITIONAL REMARK 5) A mobile telephone device comprising: 
         [0133]    a storage part that stores carrier information; and 
         [0134]    a notification part that notifies in a call the carrier information existing in the storage part to a call destination. 
         [0135]    (ADDITIONAL REMARK 6) The mobile telephone device of ADDITIONAL REMARK 5, comprising: 
         [0136]    a setting part that sets whether the carrier information is notified to the call destination, wherein 
         [0137]    the notification part notifies the carrier information or rejects notification of the carrier information by the setting of the setting part. 
         [0138]    (ADDITIONAL REMARK 7) A communication server apparatus that is connected to a mobile telephone device, comprising: 
         [0139]    a notification part that specifies a carrier of a receiving side designated by an outgoing call side and notifies carrier information of the receiving side to the outgoing call side. 
         [0140]    (ADDITIONAL REMARK 8) The communication server apparatus of ADDITIONAL REMARK 7, comprising: 
         [0141]    a connection part that connects the outgoing call side with the receiving side after the notification part notifies the carrier information. 
         [0142]    (ADDITIONAL REMARK 9) A control method of a mobile telephone device comprising: 
         [0143]    storing carrier information of a call destination in a storage part; 
         [0144]    determining in a call whether carrier information notified from the call destination coincides with carrier information which exists in the storage part; and 
         [0145]    notifying the determination if it is determined that the carrier information notified from the call destination is different from the carrier information in the storage part. 
         [0146]    (ADDITIONAL REMARK 10) The control method of a mobile telephone device of ADDITIONAL REMARK 9, comprising: 
         [0147]    displaying the carrier information notified from the call destination on a display part. 
         [0148]    (ADDITIONAL REMARK 11) The control method of a mobile telephone device of ADDITIONAL REMARK 9, comprising: 
         [0149]    suppressing a call if the carrier information notified from the call destination is different from the carrier information in the storage part. 
         [0150]    (ADDITIONAL REMARK 12) The control method of a mobile telephone device of ADDITIONAL REMARK 9, comprising: 
         [0151]    writing the carrier information notified from the call destination into the storage part or updating the storage part by a connection with the call destination. 
         [0152]    (ADDITIONAL REMARK 13) A control method of a mobile telephone device, comprising: 
         [0153]    storing carrier information in a storage part; and 
         [0154]    notifying in a call the carrier information existing in the storage part to a call destination. 
         [0155]    (ADDITIONAL REMARK 14) The control method of a mobile telephone device of ADDITIONAL REMARK 13, comprising: 
         [0156]    setting whether the carrier information is notified to the call destination; and 
         [0157]    notifying the carrier information or rejecting notification of the carrier information by the setting. 
         [0158]    (ADDITIONAL REMARK 15) A control method of a communication server apparatus connected to a mobile telephone device, the method comprising: 
         [0159]    specifying a carrier of a receiving side designated by an outgoing call side and notifying carrier information of the receiving side to the outgoing call side. 
         [0160]    (ADDITIONAL REMARK 16) The control method of a communication server apparatus of ADDITIONAL REMARK 15, comprising: 
         [0161]    connecting the outgoing call side with the receiving side after notification of the carrier information. 
         [0162]    (ADDITIONAL REMARK 17) A computer-readable recording medium storing a control program of a mobile telephone device, the program comprising the steps of: 
         [0163]    storing carrier information of a call destination in a storing part; 
         [0164]    determining in a call whether carrier information notified from the call destination coincides with carrier information which exists in the storage part in a call; and 
         [0165]    notifying the determination if it is determined that the carrier information notified from the call destination is different from the carrier information in the storage part. 
         [0166]    (ADDITIONAL REMARK 18) The recording medium of ADDITIONAL REMARK 17, the program comprising the step of: 
         [0167]    displaying the carrier information notified from the call destination on a display part. 
         [0168]    (ADDITIONAL REMARK 19) The recording medium of ADDITIONAL REMARK 17, the program comprising the step of: 
         [0169]    suppressing a call if the carrier information notified from the call destination is different from the carrier information in the storage part. 
         [0170]    (ADDITIONAL REMARK 20) The recording medium of ADDITIONAL REMARK 17, the program comprising the step of: 
         [0171]    writing the carrier information notified from the call destination into the storage part or updating the storage part by a connection with the call destination. 
         [0172]    (ADDITIONAL REMARK 21) A computer-readable recording medium storing a control program of a mobile telephone device, the program comprising the steps of: 
         [0173]    storing carrier information in a storage part; and 
         [0174]    notifying in a call the carrier information existing in the storage part to a call destination. 
         [0175]    (ADDITIONAL REMARK 22) The recording medium of ADDITIONAL REMARK 21, the program comprising the steps of: 
         [0176]    setting whether the carrier information is notified to the call destination; and 
         [0177]    notifying the carrier information or rejecting notification of the carrier information by the setting. 
         [0178]    (ADDITIONAL REMARK 23) A computer-readable recording medium storing a control program of a communication server apparatus connected to a mobile telephone device, the program comprising the step of: 
         [0179]    specifying a carrier of a receiving side designated by an outgoing call side and notifying carrier information of the receiving side to the outgoing call side. 
         [0180]    (ADDITIONAL REMARK 24) The recording medium of ADDITIONAL REMARK 23, the program comprising the step of: 
         [0181]    connecting the outgoing call side with the receiving side after notification of the carrier information. 
         [0182]    While the present invention has been described with the preferred embodiments, the description is not intended to limit the present invention. Various modifications of the embodiments based on the subject matters and objects described in claims or disclosed in this specification will be apparent to those skilled in the techniques, and such modifications rightfully fall within the true scope of the present invention. 
         [0183]    The present invention relates to obtaining telephone line (carrier) information and to call control. By the present invention, carrier information of the other end of the line can be obtained and convenience of a call such as a call depending on a carrier can be enhanced. Thus the present invention has usability.