JP4578368B2 - VoIP communication system and transmission control method - Google Patents

Description

  The present invention relates to a technology for providing a VoIP dial-in service using a private branch exchange (PBX), and in particular, a technology for individually informing a callee of a telephone number of a calling telephone terminal in a VoIP dial-in service. It is about.

  FIG. 1 shows a conventional system configuration for providing a dial-in service using a VoIP network. As shown in FIG. 1, VoIP terminals 1 and 2 are connected to a private branch exchange 10 to which a plurality of telephones are connected, and the VoIP terminals 1 and 2 are connected to a VoIP network 20. The private branch exchange 10 is a general private branch exchange having a function of providing a dial-in service by connecting to a public telephone line such as an ISDN line. Further, the telephone number of the calling telephone terminal can be individually transmitted by using the ISDN line.

  The VoIP terminals 1 and 2 are for connecting the private branch exchange 10 and the VoIP network 20, and are used for voice / IP packet conversion, a signaling function for establishing a communication channel on the VoIP network, and a connection with the private branch exchange 10. Interface function and the like. The VoIP network 10 is an IP network including a call control server (CA) 21 that performs call connection control or the like by, for example, SIP.

  In the system shown in FIG. 1, two access lines are connected to the private branch exchange 10 via two VoIP terminals 1 and 2, and a representative dial-in service is realized by these two lines. For example, when a call is made to 050-3387-1001 from an outside line, the call control server 21 functions to notify the private branch exchange 10 of the incoming call number, and the incoming call to the telephone terminal 050-3387-1001 can be made.

  In this system, each VoIP terminal holds a telephone number set as a basic contract number and an ID and a password set in association with the telephone number. The call control server 21 also holds a set of telephone number / ID / password set in each VoIP terminal.

  For example, when a telephone terminal having a telephone number 050-3387-1001 makes a call, the private branch exchange 10 searches for an available line (a line between the private branch exchange 10 and the VoIP terminal), and sends a call request to the VoIP terminal via the line. Send. Here, it is assumed that a transmission request is sent to the VoIP terminal 1. The VoIP terminal 1 sends a call request including the telephone number 050-3387-1000 set in the VoIP terminal 1 and the ID and password associated therewith to the VoIP network 20.

  Upon receiving the call request, the call control server 21 uses the telephone number / ID / password combination stored in the call control server 21 to set the telephone number / ID / password combination included in the call request. It is determined whether or not it is correct, and if it is correct, call connection processing is performed. By making such a determination, it is possible to authenticate that the caller is the correct caller in VoIP communication.

Note that there is a technique described in Patent Document 1 as an example of a conventional technique related to a private branch exchange having a dial-in function.
JP 2000-134330 A

  However, in the above example, there is a problem that the receiving side is notified of the basic contract number 1 050-3387-1000 instead of the telephone number 050-3387-1001 of the calling telephone terminal. In the system for providing the dial-in service shown in FIG. 1, a technique for individually transmitting the telephone number of the calling telephone terminal is required.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a technique for individually transmitting a telephone number of a calling telephone terminal in a dial-in service using VoIP.

The above problem is a VoIP communication system comprising a call control device in a VoIP network and a VoIP device for connecting a private branch exchange to the VoIP network , wherein the VoIP device stores authentication information in which authentication information is stored. Means for receiving a telephone number of the calling telephone terminal sent from the private branch exchange and sending a call request including the telephone number and authentication information stored in the authentication information storage means to the VoIP network. The call control device includes a telephone number storage unit that stores a group of telephone numbers of a plurality of telephone terminals for each predetermined group, an authentication information storage unit for each group that stores an authentication information group in association with the group, It is determined whether or not the telephone number of the calling telephone terminal included in the call request received from the VoIP device is stored in the telephone number storage means. A determination means for determining whether or not authentication information included in the call request exists in an authentication information group associated with the group to which the telephone number belongs, and the authentication information group by the determination means wherein when the authentication information included in the call request is determined to exist, are solved by the VoIP communication system is characterized in that a call control means for performing call connection processing based on the call request in the The

  According to the present invention, the VoIP device receives the telephone number of the calling telephone terminal sent from the private branch exchange, and sends a call request including the telephone number and previously stored authentication information to the VoIP network. The call control device holds the telephone number group and the authentication information group in association with each other, and the call control device includes the authentication information group corresponding to the group to which the telephone number of the calling telephone terminal included in the call request belongs. The originating terminal is authenticated by checking whether or not the authentication information included in the call request exists. By adopting such a configuration, each VoIP terminal can perform individual call number notification in VoIP only by having authentication information without having a pair of authentication information and telephone number.

  Embodiments of the present invention will be described below with reference to the drawings.

(Example of a system for realizing individual number transmission)
In order to notify the number of the calling telephone terminal individually, the configuration shown in FIG. 2 can be considered first.

  In this system, a telephone number / ID / password pair is determined for each telephone terminal accommodated in the private branch exchange 10. Each VoIP terminal holds a set of telephone numbers / ID / passwords of all telephone terminals under the private branch exchange 10. The call control server 21 also holds similar information.

  Each of the VoIP terminal 1 and the VoIP terminal 2 must hold a set of telephone numbers / IDs / passwords of all the telephone terminals because the outgoing call from the telephone terminal is performed by the private branch exchange 10 between the VoIP terminal 1 and the VoIP terminal 2. This is because there is a possibility of being connected to either one. The private branch exchange 10 used here has a function of transmitting the telephone number of the calling telephone terminal to the outside line. This function is a function generally possessed by a private branch exchange that can provide a dial-in service using an ISDN line.

  In this system, it is assumed that a telephone terminal of 050-3387-1001 makes a call and is connected to the VoIP terminal 1. In this case, the telephone number 050-3387-1001 is notified to the VoIP terminal 1. In the VoIP terminal 1, the ID and password corresponding to 050-3387-1001 are included in the call request together with the telephone number and transmitted to the VoIP network 20 from the stored information.

  The call control server 21 that has received the call request performs authentication from the received telephone number / ID / password and stored information, and performs call connection processing when the authentication is successful. In the call connection process, 050-3387-1001, which is the calling telephone number, is notified to the called party.

  In this way, the telephone number of the calling telephone terminal can be individually notified by the configuration as shown in FIG. However, in the configuration shown in FIG. 2, the telephone number / ID / password combination of all telephone terminals must be set in all VoIP terminals. Therefore, every time a telephone terminal is added or a telephone number is changed, all VoIP terminals are changed. You must change the terminal settings. Further, depending on the memory capacity, some VoIP terminals may not be able to set the telephone number / ID / password pairs of all telephone terminals. Next, a system according to the present invention that solves such a problem will be described.

(Embodiment of the system according to the present invention)
FIG. 3 shows a system according to an embodiment of the present invention. The hardware configuration of this system is the same as that shown in FIG. 2, but the data held by the VoIP terminals 1 and 2 and the call control server 21 and the processing contents are different from those shown in FIG.

  As shown in FIG. 2, in this system, each VoIP terminal holds a set of ID / password. The call control server 21 holds a telephone number group of telephone terminals accommodated in the private branch exchange 10 and an authentication information (ID / password) group, and associates the telephone number group with the authentication information group. It has been. The telephone number group is stored in the telephone number database, and the authentication information group is stored in the authentication information database. This grouping is performed for each user private branch exchange, for example, but a plurality of groups may be assigned to one private branch exchange.

  The operation of this system will be described with reference to the sequence chart of FIG. Here, it is assumed that the telephone terminal 050-3387-1001 makes a call and is connected to the VoIP terminal 1.

  First, when the telephone terminal of 050-33870-1001 performs a transmission operation, the private branch exchange 10 recognizes the telephone number of the calling telephone terminal from the accommodation position (step S1). The calling telephone terminal may transmit its own telephone number, and the private branch exchange 10 may recognize the telephone number of the calling telephone terminal by receiving the telephone number.

  Next, the private branch exchange 10 searches for an available line between the VoIP terminals 1 and 2 and the private branch exchange 10, and the telephone number of the calling telephone terminal is connected to the VoIP terminal (VoIP terminal 1 in this embodiment) connected to the line. A call request including 050-33870-1001 is transmitted (step S2).

  The VoIP terminal 1 that has received the call request from the private branch exchange 10 sends a call request including the telephone number of the calling telephone terminal notified from the private branch exchange 10 and the ID / password set in the VoIP terminal 1 to the VoIP network. 20 (step S3). If the private branch exchange 10 does not have a function of notifying the VoIP terminal of the calling telephone number, it includes a telephone number (for example, 050-3387-1000) preset in the VoIP terminal and an ID / password. A call request is sent to the VoIP network 20. In this case, although it is not possible to notify the individual calling number, it is possible to establish a call connection even when the private branch exchange 10 does not have a function of notifying the VoIP terminal of the calling telephone number.

  Subsequently, when the call control server 21 receives a call request including the calling telephone number / ID / password from the VoIP terminal 1, it performs authentication (step S4). In the authentication, first, the telephone number database is searched, and the calling telephone number received from the VoIP terminal 1 is searched. Then, when the outgoing telephone number exists in the telephone number database, each ID / password in the authentication information group associated with the telephone number group to which the outgoing telephone number belongs, and the ID / password received from the VoIP terminal 1 If the ID / password received from the VoIP terminal 1 is included in the authentication information group, it is determined that the authentication is successful, the call request is accepted, and the call connection process is performed (step S5). The calling telephone number is notified to the called party during the call connection process.

(About the functional configuration of each device)
The functional configuration of each device will be described below. Since the private branch exchange 10 can use an existing one, the VoIP terminal 1 and the call control server 21 will be described below. The VoIP terminal 2 has the same configuration as the VoIP terminal 1.

  FIG. 5 shows a functional configuration of the VoIP terminal 1. As shown in the figure, the VoIP terminal 1 includes an IP network interface unit 11, a call control unit 12, a voice communication unit 13, a private branch exchange interface unit 14, and a storage unit 15.

  The IP network interface unit 11 is a functional unit for performing data communication on the VoIP network 20 as an IP network. The call control unit 12 establishes a voice channel on the VoIP network by transmitting / receiving various call control signals to / from the VoIP network 20 based on a signal received from the private branch exchange 10, and makes a call connection to the private branch exchange 10 A function of transmitting a signal according to the state of the device. Further, it has a function of generating a call request including the calling telephone number received from the private branch exchange 10 and the ID / password read from the storage unit 15 and sending it to the VoIP network 20.

  The voice communication unit 13 is a functional unit for performing voice communication using the voice channel established by the call control unit 12, and includes functions such as voice data / IP packet conversion. The private branch exchange interface unit 14 is a functional unit for transmitting and receiving signals to and from the private branch exchange 10. The storage unit 15 stores an ID / password pair as shown in FIG. In addition, a predetermined telephone number may be stored in preparation for the case where the private branch exchange 10 does not send a calling telephone number.

  The above VoIP terminal has the same configuration as the existing VoIP terminal shown in FIG. 1 except that the call control unit 12 includes the outgoing telephone number received from the private branch exchange 10 and sends it to the VoIP network 20. is there.

  A VoIP terminal can be realized by creating each of the above functional units as a hardware circuit, or can be implemented in a general computer equipped with a CPU, a storage device, etc. for communication with a private branch exchange or an IP network. It can also be realized by installing hardware and a program for realizing each of the functional units.

  Next, the functional configuration of the call control server 21 is shown in FIG. The call control server 21 of this embodiment includes a communication interface unit 211, a call control unit 212, an authentication unit 213, and a storage unit 214. The communication interface unit 211 is a functional unit for performing IP communication on the VoIP network 20. The call control unit 212 is a functional unit that performs call connection processing between terminals. The authentication unit 213 is a functional unit for authenticating the calling terminal by referring to the data shown in FIG. The storage unit 214 stores a telephone number database and an authentication information database. FIG. 6 shows functions related to the present invention in the call control server 21. The call control server 21 is provided with functions necessary for realizing the VoIP service in addition to the functional units shown in FIG. Needless to say.

  The call control device can be realized by installing a program for realizing each of the functional units in a general computer including a CPU, a storage device, a communication device, and the like.

  FIG. 7 shows an example of the contents of the telephone number database (a) and the authentication information database (b). As shown in FIG. 7A, the telephone number database stores telephone numbers in association with identification information for identifying groups. Similarly, the authentication information database stores an ID / password in association with identification information for identifying a group. Based on this identification information, the telephone number group and the authentication information group are associated with each other.

  Next, the operation of the VoIP terminal will be described with reference to the flowchart shown in FIG. First, a call request is received from the private branch exchange 10 (step S11). The VoIP terminal checks whether or not the calling telephone number is included in the call request (step S12), and if included, includes the telephone number and the ID / password read from the storage unit 15. A call request is sent to the VoIP network 20 (step S13). In step S12, if the outgoing call number is not included in the outgoing call request, the outgoing call request including the telephone number set in the storage unit 15 and the ID / password is sent to the VoIP network ( Step S14).

  Next, the operation of the call control server 21 will be described with reference to the flowchart shown in FIG. The call control server 21 first receives a call request from the VoIP terminal (step S21). Then, it is checked by searching the telephone number database whether the telephone number of the calling telephone terminal included in the call request is stored in the telephone number database (step S22). If there is a telephone number of the calling telephone terminal in the telephone number database, the ID corresponding to the identification information using the identification information of the group associated with the telephone number and the ID / password included in the call request Whether or not the password is in the authentication information database is checked by searching the authentication information database (step S23). If it is determined in step S23 that the ID / password included in the call request is present in the authentication information database in association with the calling telephone number group, call connection processing based on the call request received in step S21 is executed. (Step S24).

  If the outgoing telephone number does not exist in the telephone number database in step S22, or if the ID / password included in the outgoing call request does not exist in the authentication information database in association with the outgoing telephone number group in step S23, the connection is rejected. A message indicating that this is to be returned is returned to the VoIP terminal (step S25).

  With such a configuration, it is possible to individually notify the calling telephone number by setting only one ID / password in the ID / password group registered in the authentication information database in each VoIP terminal. It becomes possible. Even if a new calling telephone number is added, it is not necessary to make any changes to each VoIP terminal.

  The present invention is not limited to the above-described embodiment, and various modifications and applications can be made within the scope of the claims.

1 is a conventional system configuration diagram for providing a dial-in service using a VoIP network. FIG. It is an example of the system for implement | achieving individual number transmission. It is a figure which shows the system which concerns on one Embodiment of this invention. It is a sequence chart for demonstrating operation | movement of the system shown in FIG. It is a function block diagram of a VoIP terminal. It is a function block diagram of a call control server. It is a figure which shows the example of the content of a telephone number database and an authentication information database. It is a flowchart for demonstrating operation | movement of a VoIP terminal. It is a flowchart for demonstrating operation | movement of a call control server.

Explanation of symbols

1, VoIP terminal 10 Private branch exchange (PBX)
20 VoIP network 21 Call control server (CA)
11 IP network interface unit 12 Call control unit 13 Voice communication unit 14 Private branch exchange interface unit 15 Storage unit 211 Communication interface unit 212 Call control unit 213 Authentication unit 214 Storage unit

Claims (2)

A VoIP communication system comprising a call control device in a VoIP network, and a VoIP device for connecting a private branch exchange and the VoIP network,
The VoIP device
Authentication information storage means for storing authentication information;
Means for receiving a telephone number of a calling telephone terminal sent from the private branch exchange and sending a call request including the telephone number and authentication information stored in the authentication information storage means to a VoIP network;
The call control device includes:
Telephone number storage means for storing a group of telephone numbers of a plurality of telephone terminals for each predetermined group;
Authentication information storage means for each group for storing an authentication information group in association with the group;
It is determined whether or not the telephone number of the calling telephone terminal included in the call request received from the VoIP device is stored in the telephone number storage means, and if it is stored, it corresponds to the group to which the telephone number belongs Determining means for determining whether or not authentication information included in the call request is present in the attached authentication information group;
Call control means for performing call connection processing based on the call request when the determination means determines that the authentication information included in the call request exists in the authentication information group. VoIP communication system. A call origination control method in a VoIP communication system comprising a call control device in a VoIP network and a VoIP device for connecting a private branch exchange to the VoIP network,
The VoIP device includes authentication information storage means for storing authentication information, and the call control device includes telephone number storage means for storing a telephone number group of a plurality of telephone terminals for each predetermined group, and an authentication information group. A group-by-group authentication information storing means for storing in association with a group, and the transmission control method includes:
The VoIP device receives the telephone number of the calling telephone terminal sent from the private branch exchange, and sends a call request including the telephone number and authentication information stored in the authentication information storage means to the VoIP network. When,
The call control device determines whether or not the telephone number of the calling telephone terminal included in the call request received from the VoIP device is stored in the telephone number storage means. A determination step of determining whether or not authentication information included in the call request is present in an authentication information group associated with a group to which a number belongs;
A call control step for performing a call connection process based on the call request when the call control device determines that the authentication information included in the call request exists in the authentication information group in the determination step; ,
An outgoing call control method characterized by comprising:

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