JP4459919B2 - Server apparatus and communication system - Google Patents

Description

  The present invention relates to a server device that provides a communication service to a communication terminal that can be connected to a plurality of communication networks, and a communication system.

  In recent years, mobile phone terminals that have a function of connecting to a mobile phone carrier as a so-called mobile phone and a function of connecting to a wireless LAN called WiFi (Wireless Fidelity) are known. Can be connected to other communication networks. Further, it is possible to make a call by VoIP (Voice Over IP) by connecting to the wireless LAN without using the communication network of the mobile phone carrier. However, in the case of a communication terminal that can be connected to a plurality of communication networks as described above, a telecommunications carrier assigns a telephone number of a different system to a subscriber's communication terminal, and thus has a plurality of telephone numbers. It was.

In order to make a call from another terminal to be received by a communication terminal having a plurality of telephone numbers, first, a telephone number (hereinafter referred to as a subscriber number) assigned to one of the subscribers by one of the carriers. Is set as a table number that can be transmitted through the communication networks of a plurality of communication carriers. When there is a call, the location where the communication terminal exists (hereinafter referred to as the location location) is detected, and if the location location detected is a communication network of another communication carrier, it is transferred to the corresponding communication network. To do. Also, in the communication network on the transferred side, the telephone number assigned to the communication terminal in its own communication network, that is, the back number with respect to the front number is detected from the table number, and the communication terminal receives the call with the detected back number. By doing so, cooperation between communication carriers has been performed (see, for example, Patent Document 1 and Patent Document 2).
JP 2005-244463 A JP 2002-152805 A

  However, as described above, in order to link communication among a plurality of communication carriers, it is necessary to manage subscriber numbers of other communication carriers. When there is a change in subscriber number or suspension of service, there is a problem that information about the service has to be distributed among the communication carriers.

  Further, when a call is made from a communication terminal to which a plurality of telephone numbers are assigned, the telephone number assigned in the communication network used at the time of outgoing call is displayed on the communication terminal on the receiving side. For this reason, if a call is returned by the displayed telephone number at the communication terminal on the receiving side, and the communication terminal of the caller does not belong to the communication network when the call is made, it can be connected. There was a problem that I could not.

  The present invention has been made to solve the above problems, and its purpose is to provide a communication terminal with a specific telephone number when providing a communication service to a communication terminal that can be connected through a plurality of communication networks. It is to provide a server apparatus and a communication system that can be easily managed between communication networks by being given, and can make and receive calls by the specific telephone number.

  In order to solve the above problem, the present invention is provided for each of a plurality of communication networks to which uniquely identifiable communication network identification information is allocated, and in-communication network terminal identification information is assigned to each of the communication networks. A server device that provides communication between the plurality of communication networks for a communication terminal to which one specific terminal identification information is given, and when receiving a registration request including the terminal identification information in the communication network from the communication terminal, The information which combined the communication network terminal identification information contained in the registration request and the communication network identification information of the own communication network and the communication network terminal identification information are associated with each other and recorded in the state management storage means. Generating notification information including recording means, the specific terminal identification information corresponding to the terminal identification information in the communication network included in the registration request, and the communication network identification information of the own communication network; When the notification information is received from another server device and the status notification means for notifying the device, information combining the specific terminal identification information and the communication network identification information included in the notification information, and the notification information A second recording means for associating the terminal identification information in the communication network with the specific terminal identification information contained in the state management storage means and recording the connection request including the specific terminal identification information to the communication terminal; The communication network to which the communication terminal is connected based on the receiving means for receiving, the specific terminal identification information included in the connection request received by the receiving means, and the information stored in the state management storage means If the detected communication network is a local communication network, the connection request is transmitted to the communication terminal. If the detected communication network is other than the local communication network, the server is connected to another server device corresponding to the detected communication network. And connecting means for transferring the serial connection request, a server apparatus characterized by comprising a.

  According to the present invention, in the invention described above, the connection unit includes the specific terminal identification information included in the connection request received by the reception unit from the state management storage unit based on the terminal identification information in the local communication network. A determination unit that searches the communication network terminal identification information for the own communication network identification information, and a determination that determines whether the communication network identification information searched by the search unit matches the communication network identification information of the own communication network. And the communication terminal connecting the connection request to the local communication network when the determination unit determines that the communication network identification information searched by the search unit matches the communication network identification information of the local communication network. And when the determination means determines that the communication network identification information searched by the search means and the communication network identification information of the own communication network do not match, the other server device corresponding to the communication network identification information Said contact And communication processing means for transferring the request, characterized by comprising a.

  According to the present invention, in the above-described invention, when the receiving unit receives the connection request, the receiving unit sends specific terminal identification information corresponding to the terminal identification information in the communication network included in the connection request. It is characterized by rewriting as the sender information.

  The present invention is provided for each of a plurality of communication networks to which uniquely identifiable communication network identification information is assigned, and each communication network is provided with terminal identification information within the communication network and with one specific terminal identification information. A communication system that provides communication between the plurality of communication networks to a communication terminal, and a registration request including terminal identification information in the communication network is transmitted from the communication terminal to any one of the communication networks In the communication network, state management information in which information in combination with the communication network terminal identification information included in the registration request and the communication network identification information of the communication network is associated with the communication network terminal identification information. The registration request for the specific terminal identification information corresponding to the terminal identification information in the communication network included in the registration request in a communication network other than the communication network to which the registration request is transmitted. But In-communication network terminal identification information in a communication network other than the received communication network is detected, and information obtained by combining the specific terminal identification information and the communication network identification information of the communication network to which the registration request is transmitted is detected. A connection request including the specific terminal identification information to the communication terminal is received by the second storage unit that stores state management information in association with the terminal identification information in the communication network and any communication network. Then, it detects terminal identification information in the communication network corresponding to the specific terminal identification information included in the connection request, refers to the state management information based on the detected terminal identification information in the communication network, and detects the detected communication network A connection processing means for transmitting the connection request to the communication terminal from a communication network that stores, as state management information, information that is a combination of the communication network identification information and the communication network identification information that is the same as the internal terminal identification information; The Is a communication system characterized in that there was e.

  According to the present invention, when receiving a registration request including in-communication network terminal identification information from a communication terminal, the server apparatus obtains the in-communication network terminal identification information included in the registration request and the communication network identification information of the own communication network. The combined information and the terminal identification information in the communication network are associated and recorded in the state management storage means, and the specific terminal identification information corresponding to the terminal identification information in the communication network included in the registration request and the communication network identification of the own communication network Notification information including the information is generated, and the generated notification information is notified to another server device. In addition, when notification information is received from another server device, information corresponding to the specific terminal identification information included in the notification information and information combining the specific terminal identification information included in the notification information and the communication network identification information The terminal identification information in the network is associated and recorded in the state management storage means. Further, when a connection request including specific terminal identification information to the communication terminal is received, the communication terminal is connected based on the specific terminal identification information included in the connection request and the information stored in the state management storage unit. If the detected communication network is a local communication network, a connection request is transmitted to the communication terminal. If the detected communication network is other than the local communication network, another server device corresponding to the detected communication network Forward connection request to. Accordingly, the server device manages the identification information of the communication terminal to which one specific terminal identification information is assigned, and identifies the terminal in the communication network assigned by the specific terminal identification information, the communication network identification information, and the corresponding communication network. Therefore, it is not necessary to manage in-communication network terminal identification information given to a communication terminal by a server device provided in another communication network. Therefore, when the service is registered or changed, it is not necessary to distribute information related to the identification information with a communication carrier of another communication network, and maintenance can be facilitated. Further, in the communication process for the communication terminal to which the specific terminal identification information is given, it is possible to connect to the communication terminal with one specific terminal identification information in a plurality of communication networks.

  Further, according to the present invention, the server apparatus corresponds to the in-communication network terminal identification information from the state management storage unit based on the in-communication network terminal identification information corresponding to the specific terminal identification information included in the received connection request. The communication network identification information is searched, and it is determined whether or not the searched communication network identification information matches the communication network identification information of the own communication network. When it is determined that the retrieved communication network identification information matches the communication network identification information of the own communication network, a connection request is transmitted to the communication terminal connected to the own communication network, and the retrieved communication network identification information and the own communication network If it is determined that the communication network identification information does not match, the connection request is transferred to another server device corresponding to the communication network identification information. Therefore, in a call connection process for a communication terminal to which specific terminal identification information is given, it is possible to connect to the communication terminal with one specific terminal identification information in a plurality of communication networks.

  Further, according to the present invention, when receiving a connection request, the server device rewrites the specific terminal identification information corresponding to the terminal identification information in the communication network of the transmission source included in the connection request as the information of the transmission source of the connection request. . Therefore, when making a call from a communication terminal to which specific terminal identification information is assigned, it is possible to rewrite the communication network terminal identification information given in the communication network of the transmission source to the specific terminal identification information. Therefore, the communication terminal on the receiving side stores the specific terminal identification information as the incoming call history, and since the specific terminal identification information can be used when calling back, the communication to which the specific terminal identification information is given. As long as the terminal is connected to one of the communication networks, a call can be made.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic block diagram showing a communication system 1 in the present embodiment. The communication system 1 provides a communication service such as a call to the mobile phone terminal 200 by the communication carrier X, the communication carrier Y, and the communication carrier Z. In the communication system 1, the communication carrier X provides a communication service to the fixed telephone terminal 300 through the fixed telephone network 31, and is connected to the IP network 30X by a wireless LAN via a VoIP router 40X disposed indoors. Provides VoIP telephone communication services. The telecommunications carrier Z is connected to the IP network 30Z and provides a VoIP telephone communication service using a wireless LAN via an AP (Access Point) 50Z disposed outdoors such as an airport or a station. The communication carrier Y provides a mobile phone communication service through the base station device 41 by a connection method such as a PDC (Personal Digital Cellular) method or a CDMA (Code Division Multiple Access) method. The communication carriers X, Y, and Z give different telephone numbers to one mobile phone terminal 200. For example, the communication carrier X uses the OABJ number system used in the so-called fixed telephone communication service. No. 03-AAAAA-BBBB is assigned, and the carrier Y gives 0A0 number type 090-CCCC-DDDD used in the mobile phone communication service, and the carrier Z also uses the 0A0 used in the VoIP service. A numbering system of 050-PPPP-QQQQ is given.

  Further, the communication carriers X, Y, and Z are provided with server systems 100X, 100Y, and 100Z for providing a telephone communication service to the mobile phone terminal 200. Each of the server systems 100X, 100Y, and 100Z includes SIP servers 20X, 20Y, and 20Z that perform call connection processing by SIP (Session Initiation Protocol) in order to perform call connection processing by VoIP. Each of the server systems 100X, 100Y, and 100Z includes position information management servers 10X, 10Y, and 10Z for managing the position information of the mobile phone terminals 200 having a plurality of telephone numbers. The SIP servers 20X, 20Y, and 20Z are connected to the corresponding location information management servers 10X, 10Y, and 10Z, respectively, and when there is a call from another terminal, for example, a general telephone terminal 300 to the mobile phone terminal 200 Next, the location information of the mobile phone terminal 200, that is, the location information is obtained from the location information management servers 10X, 10Y, and 10Z, and the connection request is transferred to the SIP server of the communication network to which the mobile phone terminal 200 belongs. To do. In FIG. 1, the communication carrier Y has the SIP server 20Y connected to the base station apparatus 41, but the PDC or CDMA exchange and the base station apparatus 41 are connected, and the SIP system call connection is made. An interconnection device or the like that performs processing may be connected to the exchange and further connected to the SIP servers 20X and 20Z from the interconnection device.

  As described above, the mobile phone terminal 200 is managed in common among the communication carriers X, Y, and Z in addition to being given different telephone numbers (terminal identification information in the communication network) by a plurality of communication carriers. The FMC number to which one FMC (Fixed Mobile Convergence) number (specific terminal identification information) is assigned is different from a number already assigned such as a mobile phone or VoIP in the 0A0 number system, for example. 060-FFFF-GGGG or the like is assigned. The FMC number is not stored in the mobile phone terminal 200, but is stored in the location information management servers 10X, 10Y, and 10Z of the respective communication carriers X, Y, and Z.

  In addition, the mobile phone terminal 200 is connected to the base station device 41 of the mobile phone carrier by the PDC method or the CDMA method by connecting to the VoIP router 40X or the AP 50Z by the wireless LAN by WiFi described above. And a plurality of call functions such as a function for making a call. In addition, when the mobile phone terminal 200 is carried by a user, for example, when it exists indoors, the mobile phone terminal 200 detects a radio signal from the VoIP router 40X, connects to the communication network of the communication carrier X, and outdoors. When moving, when a radio signal from the base station device 41 is detected, connected to the mobile phone communication network of the carrier Y, and a radio signal of the AP 50Z of the wireless LAN arranged outdoors is detected Then, processing such as connection to the communication network of the communication carrier Z is performed.

  In the following description, a device that is connected to the mobile phone terminal 200 wirelessly, such as the VoIP router 40X, the AP 50Z, and the base station device 41, and a device that is connected to the fixed phone terminal by wire are representatively described. Is described as a VoIP termination device, and in a case where the VoIP termination device is distinguished for each carrier, the VoIP termination device belonging to the communication carrier X is referred to as a VoIP termination device X and the VoIP termination device belonging to the communication carrier Y is referred to as a VoIP termination device Y. It describes as follows.

  FIG. 2 is a diagram illustrating an internal configuration of the server system 100. The server systems 100X, 100Y, and 100Z have the same internal configuration. In FIG. 2, the subscripts X, Y, and Z are omitted, and the internal functional units will be described. In the description after FIG. 2, when the individual functional units of the server systems 100X, 100Y, and 100Z are indicated, the reference numerals in FIG. 2 are given X, Y, and Z. Hereinafter, the internal configuration of the server system 100 will be described with reference to FIG.

  The location information management server 10 and the SIP server 20 of the server system 100 are given domain information as identification information that can be uniquely recognized, and are stored in the domain information storage units 17 and 25, respectively. For example, as shown in FIG. 3, domain information such as “ss-x@ss.x.com” is assigned to the SIP server 20X, and similarly, “ss-y @ ss” is assigned to the SIP server 20Y. Domain information such as “.y.com” is assigned in advance. Further, domain information such as “pr-x@pr.x.com” and “pr-y@pr.y.com” is assigned to the location information management servers 10X and 10Y, respectively. Since information that can identify the communication network of the communication carrier is assigned to the part before “@”, the corresponding information is the same in the corresponding SIP server and location information management server. The part after “@” is given information “ss” or “pr” for identifying whether the third domain is a SIP server or a location information management server. Information “x” or “y” or the like that can identify the communication network is provided, and a common domain “com” is assigned to the first domain.

  In the following description, a domain below “@” given to the location information management server 10 is described as location information management server domain information, and a domain below “@” given to the SIP server 20 is a SIP server domain. Information (communication network identification information) is described. Further, communication between the location information management server 10 and the SIP server 20 is performed using INVITE, which is a SIP message.

  Next, in the location information management server 10, the number mapping table 14 has a data structure of “subscriber”, “own network contract number”, and “FMC number” as shown in the number mapping table 14X of FIG. The subscriber identification information given by the telecommunications carrier, the telephone number given to the mobile phone terminal 200 by the telecommunications carrier, and the FMC number assigned in advance to the mobile phone terminal 200 are associated with each other. Remember.

  Note that the “subscriber” column and the subscriber identification information set in the “subscriber” column are not essential information, and the present embodiment may be configured by excluding these items. Good.

  As shown in the state management table 15X of FIG. 3, the state management table 15 has a data structure of “own network contract number” and “visit area information”. In the “own network contract number”, a telephone number assigned by a communication carrier is stored in advance. In the “location information”, when the mobile phone terminal 200 is connected to the communication network of the location information management server 10, the telephone number of the communication network given to the mobile phone terminal 200 and the communication network The information obtained by combining the SIP server domain information of “@”, for example, “03-AAAAA-BBBB@ss.x.com” is stored. Further, in the “location information”, when the mobile phone terminal 200 does not belong to the communication network of the location information management server 10, the FMC number and the SIP server domain information of the communication network to which the mobile phone terminal 200 is connected. Are combined by “@”, for example, “060-FFFF-GGGG@ss.y.com” is stored.

  The notification destination table 13 has a data structure of “FMC number” and “notification destination” as shown in the notification destination table 13X of FIG. In the “FMC number”, the FMC number of the mobile phone terminal 200 is stored. The “notification destination” manages the FMC number in association with the FMC number in order to notify the other location information management server 10 that the mobile phone terminal 200 is connected to its own communication network. Location information management server domain information is stored.

  The communication unit 16 transmits / receives status notification information described later to / from other location information management servers. The search unit 11 receives a search request from the SIP server 20 when a call to the mobile phone terminal 200 is generated by the FMC number, converts the FMC number to the own network contract number by the number mapping table 14, and converts The location information corresponding to the self network contract number is detected from the state management table 15. When the mobile phone terminal 200 is newly connected, the update unit 12 rewrites the “location information” in the state management table 15, generates state notification information, and transmits another position information management server through the communication unit 16. Send to. Further, when the status notification information is received from another location information management server, the update unit 12 rewrites the “location information” in the status management table 15 based on the received status notification information.

  Next, in the SIP server 20, the location table 23 has a data structure of “subscriber identification information”, “phone number”, and “IP address” as shown in the location table 23X in FIG. In “subscriber” and “telephone number”, subscriber identification information and a telephone number given in advance by a communication carrier are stored. In the “IP address”, the mobile phone terminal 200 detects a radio signal from the VoIP terminal device, and the “IP address” given by the VoIP terminal device by DHCP (Dynamic Host Configuration Protocol) or the like is the mobile phone terminal. It is memorized by being notified from 200.

  The communication processing unit 24 is connected to the VoIP terminator on the one hand, and connected to the SIP server 20 of another server system on the other hand, and transmits / receives a message for call connection processing by the SIP system, and sets or disconnects the communication path. Perform the process. In addition, when the communication processing unit 24 receives a connection request from a VoIP terminal device or another SIP server, the communication processing unit 24 obtains the location information of the FMC number included in the connection request from the location information management server 10, Send.

  When the registration request transmitted from the mobile phone terminal 200 via the VoIP terminator is received by the communication processing unit 24, the authentication processing unit 21 receives the registration request transmitted from the mobile phone terminal 200 based on the information included in the received registration request. Authentication is performed to determine whether or not to provide a communication service. Further, when the authentication is successful, the authentication processing unit 21 displays the IP address included in the registration request in the row of the location table 23 that matches the subscriber identification information and the telephone number included in the registration request in order to start the communication service. Record.

  The determination unit 22 receives a search response corresponding to the search request transmitted from the communication processing unit 24 to the location information management server 10, and the SIP server domain information portion of the location information included in the search response is the domain information storage unit. It is determined whether or not it matches the SIP server domain information stored in 25. If they match, it is determined that the mobile phone terminal 200 is connected to the local communication network, and a connection request is sent to the communication processing unit 24 as a VoIP termination point. Have it transferred to the device. Further, if they do not match, the determination unit 22 determines that the mobile phone terminal 200 is connected to another communication network, and transfers the connection request to another SIP server to be connected. When there are a plurality of other SIP servers to be connected, a route search table that associates the SIP server domain information with the transmission port is provided, and a connection request is transferred according to the route search table.

  Next, the location information registration processing to the location information management server 10 will be described with reference to FIG. As a premise, “03-AAAAA-BBBB” is assigned to the mobile phone terminal 200 as a fixed IP telephone network contract number, that is, a telephone number given by the communication carrier X, and “060-FFFF” is assigned as an FMC number. -GGGG "is assigned.

  First, when the mobile phone terminal 200 detects a radio signal from the VoIP terminator X, an IP address (10.10.10.10) is given to the mobile phone terminal 200 by DHCP of the VoIP terminator X. A registration request REGISTER including the subscriber identification information “A” and the telephone number “03-AAAAA-BBBB” is transmitted to the SIP server 20X. When receiving the REGISTER, the communication processing unit 24X of the SIP server 20X transmits the received REGISTER to the authentication processing unit 21X. The authentication processing unit 21X includes a combination of subscriber identification information and telephone number information stored in the items “subscriber” and “telephone number” stored in the location table 23X, and subscriber identification information included in REGISTER. Are compared with the telephone number information to determine whether or not there is matching information. Since the combination of the subscriber identification information “A” and the telephone number “03-AAAAA-BBBB” exists in the location table 23X in FIG. 3, the authentication processing unit 21 determines that they match and the IP address included in the REGISTER (10.10.10.10) is recorded in the “IP address” item of “A” in the “subscriber” item of the location table 23X and “03-AAAAA-BBBB” in the item of “telephone number” ( Step Sa1).

  Next, the authentication processing unit 21X includes the telephone number for which the IP address is registered in the location table 23X, that is, “03-AAAAA-BBBB”, and “@” of the domain information stored in the domain information storage unit 25. The subsequent information, that is, “@ ss.x.com” is read out, combined with the telephone number to generate “03-AAAAA-BBBB@ss.x.com” information, and as a REGISTER of the registration request including the generated information It transmits to the update unit 12 of the location information management server 10X (step Sa2).

  The update unit 12X of the location information management server 20X that has received the REGISTER uses “03-AAAAA-BBBB” before “@” included in the REGISTER based on the “own network contract number” item of the state management table 15X. Corresponding rows are detected, and “03-AAAAA-BBBB@ss.x.com” included in REGISTER is recorded in the “in-zone information” item of the detected rows (step Sa3). Next, the update unit 12 detects the FMC number “060-FFFF-GGGG” corresponding to “03-AAAAA-BBBB” before “@” included in REGISTER from the number mapping table 14X (step Sa4). Then, the update unit 16 detects the information of the location information management server of the notification destination corresponding to the detected FMC number from the notification destination table 13X. Here, the location information management server 10Y of the communication carrier Y is detected as the destination (step Sa5). Then, the updating unit 12 obtains the FMC number, the location information “060-FFFF-GGGG@ss.x.com” that combines the corresponding SIP server domain information “@ ss.x.com”, and the FMC number. The associated state notification information is generated, and the generated state notification information is transmitted to the position information management server 10Y detected from the notification destination table 13X (step Sa6).

  The update unit 12Y of the location information management server 10Y receives the state notification information through the communication unit 12Y, and searches the number mapping table 14Y for the FMC number included in the received state notification information. When there is a matching FMC number by the search, the updating unit 12Y determines that the FMC number included in the status notification information is managed by the location information management server 10Y, and the local network corresponding to the FMC number The contract number “090-CCCC-DDDD” is read out from the number mapping table 14Y (step Sa7). Next, the updating unit 12Y detects a row corresponding to the read own network contract number from the state management table 15Y, and includes “060-FFFF” included in the state notification information in the item “location information” of the detected row. -GGGG@ss.x.com "is recorded (step Sa8).

  Thereby, the location information management servers 10X and 10Y can manage the location information of the mobile phone terminal 200 only by the FMC number without managing the phone numbers assigned to the mobile phone terminal 200 by each other.

Next, the procedure of call connection processing using FMC numbers between different communication carriers by the SIP server 20 will be described with reference to FIGS.
FIG. 4 is a flowchart showing an overview of the procedure related to the call connection processing of the SIP server 20. First, the communication processing unit 24 of the SIP server 20 receives INVITE, which is a connection request by the SIP method (step S1). The communication processing unit 24 determines whether or not the destination telephone number included in the received INVITE is an FMC number (step S2). If the destination telephone number is not an FMC number, that is, if it is a number other than the 060 number system (for example, OABJ, 090, 050), etc., the SIP server 20 described above is provided internally in order to perform normal call connection processing. Based on the route search table or the like, it is determined whether a communication terminal is connected to the own communication network or is connected to another communication network, and it is necessary to transfer INVITE to another SIP server 20, Routing information for transmitting INVITE is set. Then, the communication processing unit 24 transmits INVITE according to the set routing information (step S8).

  On the other hand, if it is determined that the destination telephone number is an FMC number, the communication processing unit 24 requests the location information management server 10 for location information where the mobile phone terminal 200 is located (step S3). ). When the location information is received from the location information management server 10, the determination unit 22 determines whether the mobile phone terminal 200 is connected to the own communication network or is connected to another communication network. It is determined whether the INVITE needs to be transferred to the SIP server 20, and the communication processing unit 24 sets routing information for transmitting the INVITE based on the determination result (step S5). Then, the communication processing unit 24 transmits INVITE according to the set routing information (step S6).

  The procedure shown in FIGS. 5 to 8 described below is a procedure corresponding to the processes of steps S3 to S6 in the case of the FMC number as a result of the number determination in step S2 of the above flowchart.

  FIGS. 5 and 6 show a case where the communication terminal 300 that is the fixed telephone of the caller and the mobile phone terminal 200 that is the destination of the FMC number are connected to the communication network operated by the same carrier X The procedure of the call connection process is shown.

  In the diagrams shown in FIGS. 5 and 6, prior to the processing shown in FIGS. 5 and 6, the location information registration processing in the location information management server 10 </ b> X described with reference to FIG. 3 is completed. It shall be. In addition, it is described that the mobile phone terminal 200 directly transmits and receives SIP messages, but as described above, these messages are performed by the VoIP terminator to which the mobile phone terminal 200 is connected. Shall. The communication terminal 300 is a SIP telephone terminal that is directly connected to the IP network in the examples of FIGS. 5 and 6, but may be a fixed telephone terminal connected to a VoIP router or the like. Hereinafter, the steps in FIG. 5 are used as titles, and the detailed procedure will be described according to the steps in FIG.

(Step Sb1: Call)
First, transmission is performed from the communication terminal 300 using the FMC number (060-FFFF-GGGG) as a destination. As a result of transmission from the communication terminal 300, the communication terminal 300 transmits INVITE including the FMC number (060-FFFF-GGGG) as an incoming call destination to the SIP server 20X (step Sc1). When receiving the INVITE, the SIP server 20X transmits a provisional response 100 “Trying” to the communication terminal 300 (step Sc2).

(Step Sb2: Number determination)
When receiving the INVITE, the communication processing unit 24X of the SIP server 20X reads the destination telephone number (060-FFFF-GGGG), and determines whether or not the telephone number is the FMC number as described in FIG. Judgment is made. Here, it is determined that the FMC number.

(Step Sb3: Position inquiry)
The communication processing unit 24X reads the destination FMC number (060-FFFF-GGGG) included in the received INVITE and acquires the location information of the mobile phone terminal 200, and the location information management server including the read FMC number An INVITE message addressed to 10X is generated, and the generated INVITE is transmitted to the location information management server 10X (step Sc3).

(Step Sb4: Location position detection)
When receiving the INVITE transmitted from the communication processing unit 24X, the search unit 11X of the location information management server 10X reads the destination FMC number (060-FFFF-GGGG) included in the received INVITE, and sets the read FMC number to the read FMC number. Based on this, the number mapping table 14X is searched, and the local network contract number (03-AAAAA-BBBB) of the matching line is read from the number mapping table 14X. Then, the search unit 11X searches the status management table 15X based on the read own network contract number, and stores the location information (03-AAAAA-BBBB@ss.x.com) of the matching row by the search. Read from 15X (step Sc5).

(Step Sb5: position information notification)
When the search unit 11X reads the location information (03-AAAAA-BBBB@ss.x.com) from the state management table 15X, the search unit 11X generates a response message 302 including the read location information and transmits it to the SIP server 20X. (Step Sc6). When receiving the response message 302, the SIP server 20X transmits ACK to the location information management server 10X (step Sc7).

(Step Sb6: Incoming call)
When the determination unit 22 of the SIP server 20X receives the response message 302, the SIP server domain information (ss.x.com) of the location information included in the received response message 302 is stored in the domain information storage unit 25X. It is determined whether the domain information matches the SIP server domain information. Here, since the SIP server domain information matches, it is determined that the mobile phone terminal 200 is connected to the local communication network (step Sc8). Then, the communication processing unit 24X that has received the determination result from the determination unit 22X, next corresponds to the telephone number (03-AAAAA-BBBB) before “@” of the location information included in the response message 302. The IP address (10.10.10.10) to be read is read with reference to the location table 23X (step Sc9).

  The communication processing unit 24X transmits the INVITE received from the communication terminal 300 based on the read IP address (10.10.10.10) to the VoIP terminator to which the mobile phone terminal 200 is connected (Step Sc10). The VoIP terminating device that has received INVITE transmits a provisional response 100 “Trying” to the SIP server 10X (step Sc11). After transmitting the provisional response 100, the VoIP terminating device transmits a call response 180 “Ringing” to the communication terminal 300, whereby the mobile phone terminal 200 is notified of the ringing tone, and the communication terminal 300 transmits the ring back tone. A sound is output (step Sc12). When the user operates the mobile phone terminal 200 to receive an incoming call, the VoIP terminal device connected to the mobile phone terminal 200 transmits an incoming call response 200 “OK” to the communication terminal 300 (step Sc13). When receiving the incoming response 200 “OK”, the communication terminal 300 transmits ACK to the VoIP terminal device (step Sc14). Then, a call is established between the communication terminal 300 and the mobile phone terminal 200 (step Sc15).

  Next, a procedure for call connection processing between the mobile phone terminal 200 and the mobile phone terminal 400 to which FMC numbers are assigned between different carriers X and Y will be described with reference to FIGS. .

  7 and 8, the mobile phone terminal 200 detects a radio signal of the VoIP terminal device X of the communication carrier X from the state in which the mobile phone terminal 200 is connected to the communication carrier Y, and FIG. As described above, registration processing is performed on the location information management server 10X, and status notification information is also transmitted to the location information management server 10Y of the carrier Y, and registration is completed. . Moreover, although it has been described that the mobile phone terminal 200 and the mobile phone terminal 400 directly transmit and receive a SIP message, as described above, these messages are transmitted to the VoIP terminator to which the mobile phone terminal 200 is connected. It is assumed that data is transmitted and received by the VoIP terminator Y to which X and the mobile phone terminal are connected. As for the mobile phone terminal 200, (060-FFFF-GGGG) is assigned as the FMC number as in the above-described embodiment, and (03-AAA-BBBB) is assigned as the contract number of the communication carrier X. It is assumed that (090-RRRR-SSSS) is assigned as the contract number of the communication carrier Y. The mobile phone terminal 400 is assigned (060-HHHH-IIII) as the FMC number, and (090-JJJJ-KKKK) is assigned as the contract number of the communication carrier Y. It is assumed that (03-LLLL-MMMM) is assigned as the contract number of X. In the following, the steps in FIG. 7 are used as titles, and the detailed procedure will be described according to the steps in FIG.

(Step Sd1: Call)
First, a call is made from the mobile phone terminal 400 with the FMC number (060-FFFF-GGGG) as the destination. By calling from the mobile phone terminal 400, the VoIP terminal device Y of the mobile phone terminal 400 transmits INVITE including the FMC number (060-FFFF-GGGG) as the destination to the SIP server 20Y (step Se1). When receiving the INVITE, the SIP server 20Y transmits a provisional response 100 “Trying” to the VoIP terminal device Y of the mobile phone terminal 400 (step Se2).

(Step Sd2: Number determination)
When receiving the INVITE, the communication processing unit 24Y of the SIP server 20Y reads the destination telephone number (060-FFFF-GGGG) and determines whether the telephone number is the FMC number as described in FIG. Judgment is made. Here, it is determined that the FMC number.

(Step Sd3: Position inquiry)
The communication processing unit 24Y reads the destination FMC number (060-FFFF-GGGG) included in the received INVITE and acquires the location information of the mobile phone terminal 200, and the location information management server including the read FMC number An INVITE message addressed to 10Y is generated, and the generated INVITE is transmitted to the location information management server 10Y (step Se3).

(Step Sd4: Location position detection)
When receiving the INVITE transmitted from the communication processing unit 24Y, the search unit 11Y of the location information management server 10Y reads the destination FMC number (060-FFFF-GGGG) included in the received INVITE and sets the read FMC number to the read FMC number. Based on this, the number mapping table 14Y is searched, and the local network contract number (090-CCCC-DDDD) of the matching row is read from the number mapping table 14Y. Then, the search unit 11Y searches the status management table 15Y based on the read own network contract number, and stores the location information (060-FFFF-GGGG@ss.x.com) of the matching row by the search. Read from 15X (step Se5).

(Step Sd5: Location information notification)
When the search unit 11Y reads the location information (060-FFFF-GGGG@ss.x.com) from the state management table 15Y, the search unit 11Y generates a response message 302 including the read location information and transmits the response message 302 to the SIP server 20Y. (Step Se6). Upon receiving the response message 302, the SIP server 20Y transmits ACK to the location information management server 10Y (step Se7).

(Step Sd6: Routing control)
When the determination unit 22Y of the SIP server 20Y receives the response message 302, the SIP server domain information (ss.x.com) of the location information included in the received response message 302 is stored in the domain information storage unit 25Y. It is determined whether the domain information matches the SIP server domain information. Here, since the SIP server domain information of the domain information stored in the domain information storage unit 25Y is (ss.y.com), it is determined that they do not match (step Se8). Therefore, the communication processing unit 24Y that has received the determination result from the determination unit 22Y receives the ss. x. The SIP server 20X corresponding to “com” is detected from the route search table stored therein, and the R-URI of INVITE received from the VoIP terminal device Y of the mobile phone terminal 400 is set to “060-FFFF-GGGG@ss.x. com ". At this time, the source telephone number included in INVITE, that is, the contractor number (090-JJJJ-KKKK) in the communication carrier Y of the mobile phone terminal 400 is rewritten to the FMC number. The search unit 11Y responds to the communication processing unit 24Y of the SIP server 20Y with (060-HHHH-IIII) detected from the number mapping table 14Y. The communication processing unit 24Y rewrites “090-JJJJ-KKKK”, which is the value of “Display-name” and “User identifier” of INVITE, to “060-HHHH-IIII” (Step Se9). ). Then, the communication processing unit 24 transmits INVITE to the SIP server 20X of the communication carrier X (Step Se11). When receiving the INVITE, the communication processing unit 24X of the SIP server 20X of the communication carrier X returns a provisional response 100 “Trying” (Step Se12).

  In addition to the configuration described above, the SIP server 20Y is provided with a calling number notification service function, etc., in addition to the configuration described above, so that the FMC number is transmitted from a contract user. May be rewritten uniformly with the FMC number stored in the SIP server 20Y in advance.

(Step Sd7: position inquiry)
The communication processing unit 24X reads the destination FMC number (060-FFFF-GGGG) included in the INVITE received from the SIP server 20Y in order to acquire the location information of the mobile phone terminal 200, and includes the read FMC number An INVITE message addressed to the location information management server 10X is generated, and the generated INVITE is transmitted to the location information management server 10X (step Se13).

(Step Sd8: Location position detection)
When receiving the INVITE transmitted from the communication processing unit 24X, the search unit 11X of the location information management server 10X reads the destination FMC number (060-FFFF-GGGG) included in the received INVITE, and sets the read FMC number to the read FMC number. Based on this, the number mapping table 14X is searched, and the local network contract number (03-AAAAA-BBBB) of the matching line is read from the number mapping table 14X. Then, the search unit 11X searches the status management table 15X based on the read own network contract number, and stores the location information (03-AAAAA-BBBB@ss.x.com) of the matching row by the search. Read from 15X (step Se14).

(Step Sd9: position information notification)
When the search unit 11X reads the location information (03-AAAAA-BBBB@ss.x.com) from the state management table 15X, the search unit 11X generates a response message 302 including the read location information and transmits it to the SIP server 20X. (Step Se16). When receiving the response message 302, the SIP server 20X transmits ACK to the location information management server 10X (step Se17).

(Step Sd10: Incoming call)
When the determination unit 22X of the SIP server 20X receives the response message 302, the SIP server domain information (ss.x.com) of the location information included in the received response message 302 is stored in the domain information storage unit 25X. It is determined whether the domain information matches the SIP server domain information. Here, since the SIP server domain information matches, it is determined that the mobile phone terminal 200 is connected to the local communication network (step Se18). Then, the communication processing unit 24X that has received the determination result from the determination unit 22X, next corresponds to the telephone number (03-AAAAA-BBBB) before “@” of the location information included in the response message 302. The IP address (10.10.10.10) to be read is read with reference to the location table 23X (step Se19).

  The communication processing unit 24X transmits the INVITE received from the SIP server 20Y to the VoIP terminator X to which the mobile phone terminal 200 is connected based on the read IP address (10.10.10.10) (Step Se20). . The VoIP terminal device X that has received INVITE transmits a provisional response 100 “Trying” to the SIP server 10X (step Se21). After transmitting the provisional response 100, the VoIP terminal device X transmits a call response 180 “Ringing” to the VoIP terminal device Y to which the mobile phone terminal 400 is connected, so that the mobile phone terminal 200 is notified of the ringing tone. The mobile phone terminal 400 outputs a ringback tone sound (step Se22). When the user operates the mobile phone terminal 200 to receive an incoming call, the VoIP terminal device X connected to the mobile phone terminal 200 transmits an incoming call response 200 “OK” to the VoIP terminal device Y (step Se23). When receiving the incoming response 200 “OK”, the VoIP terminal device Y transmits ACK to the VoIP terminal device X (step Se24). Then, a call is established between the mobile phone terminal 400 and the mobile phone terminal 200 (step Se25). At this time, the FMC number (060-HHHH-IIII) of the calling-side mobile phone terminal 400 included in INVITE is recorded in the incoming call history of the mobile phone terminal 200.

  With the configuration of the above embodiment, in a call connection process for a mobile phone terminal, it is possible to connect to the mobile phone terminal with one FMC number in a communication network of a plurality of communication carriers. This eliminates the need for each telecommunications carrier to manage the telephone numbers assigned by other telecommunications carriers within its own communications network, and provides information to and from other telecommunications carriers when registering or changing services. There is no need for distribution, and maintenance can be facilitated.

  Further, since the number management in the mobile phone terminal to which the FMC number is assigned is performed by the location information management server, the mobile terminal to which the FMC number is assigned without changing the number management of the communication terminal of the existing local communication network. Only telephone terminal number management can be added.

  In addition, even if the number of telecommunications carriers to be linked increases, the information for number management does not increase, and only one location information managed in correspondence with the telephone number of the local communication network is managed by one telecommunications carrier. Can be managed with.

  Further, in the case of a mobile phone terminal to which an FMC number is given, the telephone number of the caller can be rewritten to the FMC number at the time of outgoing call. Therefore, the FMC number is stored in the incoming call terminal as the incoming call history. Because the FMC number can be used when calling back, as long as the mobile phone terminal to which the FMC number is assigned is connected to the communication network of one of the contracted carriers. It becomes possible to make a call.

  In addition, when a table number is used to specify a location, such as an OABJ number adopted in a conventional fixed telephone terminal, the incoming call is received on the mobile phone communication network without the user on the calling side knowing. Therefore, there was a possibility of being charged at a high call charge. However, by making a call using the FMC number as in the above embodiment, for example, the connection destination is connected from the SIP server to a fixed telephone communication network that has a fixed charge compared to the mobile telephone, or the mobile telephone communication network. It is possible to inform the user in advance of which charge system the communication network is connected to by letting the communication terminal on the caller side announce before connecting.

  Further, when the mobile phone terminal 200 is connected to the networks of two or more communication carriers, the mobile phone terminal 200 may be distributed based on a predetermined priority. For example, when a wireless signal of a public wireless LAN and a cellular phone network is detected, the connection is made based on a wireless signal of a public wireless LAN with a low charge.

  In the above-described embodiment, a series of processing steps by the above-described SIP server, location information management server, and the like are stored in a computer-readable recording medium in the form of a program. By executing this, the above processing is performed. That is, each processing means and processing unit in the SIP server and the location information management server is such that a central processing unit such as a CPU reads the above program into a main storage device such as a ROM or RAM, and executes information processing / arithmetic processing. By doing so, it is realized.

  Here, the computer-readable recording medium means a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like. Alternatively, the computer program may be distributed to the computer via a communication line, and the computer that has received the distribution may execute the program.

It is a block diagram which shows the communication system provided with the server system by one Embodiment of this invention. It is the block diagram which showed the internal structure of the server system by this embodiment. It is the figure which showed the registration process of the location information by this embodiment. It is the flowchart which showed the process of number determination in the SIP server by this embodiment. 6 is a flowchart showing call connection processing to an FMC number mobile phone terminal in the same communication network according to the present embodiment. It is the sequence diagram which showed the call connection process to the mobile telephone terminal of the FMC number in the same communication network by this embodiment. It is the flowchart which showed the call connection process to the mobile telephone terminal of the FMC number between the different communication networks by this embodiment. It is the sequence diagram which showed the call connection process to the mobile telephone terminal of the FMC number between the different communication networks by this embodiment.

Explanation of symbols

10 location information management server 11 search unit (search means)
12 Update unit (first recording means, second recording means)
13 Notification destination table 14 Number mapping table 15 Status management table (status management storage means)
16 Communication unit (status notification means)
17 domain information storage unit 20 SIP server 21 authentication processing unit 22 determination unit (determination means)
23 Location table 24 Communication processing unit (communication processing means)
25 Domain information storage unit 100 Server system (server device)

Claims (4)

Provided for each of a plurality of communication networks to which uniquely identifiable communication network identification information is assigned, and for each communication network to which communication terminal identification information is assigned and one specific terminal identification information is assigned for each communication network A server device for providing communication between the plurality of communication networks,
When receiving a registration request including terminal identification information in the communication network from the communication terminal, information combining the terminal identification information in the communication network and the communication network identification information of the own communication network included in the registration request, and the communication First recording means for associating and recording in the state management storage means with in-network terminal identification information;
Generate notification information including the specific terminal identification information corresponding to the terminal identification information in the communication network included in the registration request and the communication network identification information of the own communication network, and notify the generated notification information to another server device. Status notification means;
When the notification information is received from another server device, the combination of the specific terminal identification information included in the notification information and the communication network identification information and the specific terminal identification information included in the notification information Second recording means for associating with the terminal identification information in the communication network and recording in the state management storage means;
Receiving means for receiving a connection request including the specific terminal identification information to the communication terminal;
Based on the specific terminal identification information included in the connection request received by the receiving unit and the information stored in the state management storage unit, the communication network to which the communication terminal is connected is detected and detected. When the communication network is a local communication network, the connection request is transmitted to the communication terminal. When the detected communication network is other than the local communication network, the connection request is transferred to another server device corresponding to the detected communication network. Connection means;
A server device comprising: The connecting means includes
Search for retrieving own communication network identification information from the state management storage means to the terminal identification information in the communication network based on the terminal identification information in the own communication network in the specific terminal identification information included in the connection request received by the receiving means Means,
Determination means for determining whether or not the communication network identification information searched by the search means matches the communication network identification information of the own communication network;
When the determination means determines that the communication network identification information searched by the search means matches the communication network identification information of the local communication network, the connection request is transmitted to the communication terminal connected to the local communication network. If the determination means determines that the communication network identification information searched by the search means does not match the communication network identification information of the own communication network, the connection request is sent to another server device corresponding to the communication network identification information. Communication processing means for transferring
The server apparatus according to claim 1, further comprising: The receiving means includes
When the connection request is received, the specific terminal identification information corresponding to the terminal identification information in the communication network of the transmission source included in the connection request is rewritten as the transmission source information of the connection request. 2. The server device according to 2. Provided for each of a plurality of communication networks to which uniquely identifiable communication network identification information is assigned, and for each communication network to which communication terminal identification information is assigned and one specific terminal identification information is assigned for each communication network A communication system providing communication between the plurality of communication networks,
When a registration request including the in-communication network terminal identification information is transmitted from any of the communication terminals to any of the communication networks, the in-communication network terminal identification information included in the registration request and the communication First storage means for storing state management information in which information obtained by combining communication network identification information of a network and terminal identification information in the communication network are associated with each other;
In a communication network other than the communication network to which the registration request is transmitted, a communication network other than the communication network to which the registration request for the specific terminal identification information corresponding to the terminal identification information in the communication network included in the registration request is transmitted And detecting the terminal identification information in the communication network, and combining the specific terminal identification information and the communication network identification information of the communication network to which the registration request is transmitted, and the detected terminal identification information in the communication network. Second storage means for storing the associated state management information;
When a connection request including the specific terminal identification information to the communication terminal is received in any communication network, the terminal identification information in the communication network corresponding to the specific terminal identification information included in the connection request is detected. And referring to the state management information based on the detected in-communication network terminal identification information, and combining the in-communication network terminal identification information with the detected in-communication network terminal identification information and the information in the communication network identification information. Connection processing means for transmitting the connection request from the communication network stored as management information to the communication terminal;
A communication system comprising:

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