JP4850120B2 - Call control system, call control device, call control method, and call control program - Google Patents

Description

  The present invention relates to a technique for transferring a call from a terminal connected to an IP telephone network or a general telephone network to which a telecommunication number is assigned to an IP telephone terminal connected to the Internet network.

  In a telephone service provided by a telecommunications carrier, a network for providing the telephone service has a certain call quality condition in order to be assigned a telecommunication number (so-called telephone number, hereinafter also referred to as a telephone number). It is necessary to satisfy. Therefore, in the case of an Internet telephone using an Internet network in which call quality management is difficult, it has been impossible to connect a terminal using a telecommunication number.

  However, in response to the report (Non-Patent Document 1) of the “Study Group on Telecommunication Numbers in the IP Age” in the Ministry of Internal Affairs and Communications, by performing a call transfer operation (insertion of pre-transfer guidance) that satisfies certain conditions, An outgoing call from the IP telephone network or the general telephone network made by dialing the destination telecommunication number can be received by a terminal connected to the Internet network.

  In the present specification and claims, the “IP telephone network” is a network that satisfies the call quality conditions and is assigned a telecommunication number, and the “general telephone network” is a fixed telephone network and a portable telephone network. It is assumed that the telephone network is a general telephone network that is not an IP telephone, and the “Internet network” is a general Internet network in which call quality is not particularly managed.

  As a conventional technique for realizing the above-described pre-transfer guidance insertion, a new VoIP (Voice over IP) server is installed in the Internet network, and the IP telephone network and the Internet network are connected by a transfer gateway device to a predetermined level. There is a technique for performing transfer processing. FIG. 1 shows the system configuration of this prior art.

  As shown in FIG. 1, the Internet telephone network 3 is configured by providing the VoIP server 1 in the Internet network, and the Internet telephone network 3 is connected to the IP telephone network 7 via the transfer gateway device 5. The IP telephone network 7 includes an original VoIP server 9, and the general telephone network 11 includes an exchange 10. The IP telephone network 7 and the general telephone network 11 are connected via a gateway device 13.

  Referring to the sequence chart of FIG. 2, the calling terminal 15 connected to the general telephone network 11 or the IP telephone network 7 (general telephone network 11 in the example of FIG. 2) is connected to the called terminal 17 connected to the Internet telephone network 3. A sequence when an incoming call is made will be described.

  First, as preprocessing, the assigned telephone number of the called terminal 17 is registered in the VoIP server 9 of the IP telephone network 7, the terminal ID and telephone number of the called terminal 17 are registered in the transfer gateway device 5, and the VoIP of the Internet telephone network 3 is registered. The terminal ID of the destination terminal 17 is registered in the server 1 (steps 1 to 3). Note that “register” includes storing information in a storage device.

  Thereafter, when the destination terminal 17 connects to the Internet telephone network 3, an IP address is assigned to the destination terminal 17, and a registration request (register) including the IP address and the terminal ID is transmitted to the VoIP server 1 (step 4, 5). When the destination terminal 17 connects to the VoIP server 1, authentication using an ID, a password, or the like is performed. Further, the transfer gateway device 5 transmits a registration request including its own terminal ID 'and IP address to the VoIP server 1 of the Internet telephone network 3, and also includes a registration including the telephone number of the called terminal 17 and its own IP address. The request is transmitted to the VoIP server 9 of the IP telephone network 7 (steps 6 and 7). The VoIP server 1 of the Internet telephone network 3 and the VoIP server 9 of the IP telephone network 7 perform registration (steps 8 and 9), respectively. When the transfer gateway device 5 is always connected and operating, information such as “terminal ID '& IP” and “telephone number & IP” is registered in advance in each server, so that the above registration process (FIG. 2) is performed. Steps 6 and 7) can be omitted.

  FIG. 3A shows an example of data after registration in the VoIP server 9 of the IP telephone network 7. As shown in FIG. 3A, the telephone number of the called terminal 17 and the IP address of the transfer gateway device 5 are stored in association with each other. FIG. 3B is an example of data registered in the transfer gateway device 5 and stores the telephone number of the destination terminal 17 and the terminal ID of the destination terminal 17. FIG. 3C is an example of data registered in the VoIP server 1 of the Internet telephone network 3 and stores the terminal ID and IP address of the destination terminal 17. Hereinafter, it is assumed that the telephone number of the destination terminal 17 is 05033001235, the terminal ID is Bob, and the IP address is 150.1.2.3. It is assumed that the IP address of the transfer gateway device 5 is 122.1.2.3.

  Thereafter, the calling terminal 15 transmits a call connection request in response to a calling operation by dialing the telephone number assigned to the called terminal 17 (step 10). The VoIP server 9 of the IP telephone network 7 uses the telephone number (05033001235) of the called terminal 17 in the received call connection request, searches the data shown in FIG. 122.1.2.3) is acquired (step 11), and a call connection request including the telephone number of the destination terminal 17 is transmitted to the transfer gateway device 5 (step 12). As a result, the transfer gateway device 5 receives an incoming call from the calling terminal 15.

  The transfer gateway device 5 that has received the call connection request obtains the terminal ID of the called terminal 17 by searching the data in FIG. 3B using the telephone number of the called terminal 17 and starts the transfer process (step). 13). The transfer gateway device 5 once responds to the incoming call (steps 14 and 15), and uses the communication path between the transfer gateway device 5 and the calling terminal 15 connected by the response to the calling terminal 15 before transferring ("Internet" "Transfer to the telephone service." Etc.) is transmitted (step 16).

  When the transmission of the pre-transfer guidance is completed, the transfer gateway device 5 makes a call to the destination terminal 17 of the Internet telephone network 3. That is, a call connection request including the terminal ID is transmitted (step 17). The VoIP server 1 obtains the IP address of the destination terminal 17 by searching the data shown in FIG. 3C using the terminal ID included in the call connection request (step 18), and makes a call connection request to the destination terminal 17. Is transmitted (step 19). The called terminal that has received the call connection request performs a call operation (step 20), and returns a response indicating that the call is being made (step 21). The gateway device 13 that has received the response transmits a ringback tone (RBT) (step 22).

When the called terminal 17 goes off-hook (step 23), a connection response indicating a successful connection is transmitted (step 24), a call connection is established between the called terminal and the calling terminal, and a call is performed (step 25).
"Study Group Second Report on Telecommunication Numbers in the IP Age", Ministry of Internal Affairs and Communications, June 2006, Internet <URL: http://www.soumu.go.jp/s-news/2006/ pdf / 060616_1_houkoku.pdf>

In the above prior art for realizing the transfer of a call to the Internet network, a transfer gateway device is installed between the Internet telephone network and the IP telephone network, and both are connected, so the following (1) to ( There was the problem of 4).
(1) It is necessary to set subscriber data and the like for a plurality of devices when a user starts to use a service, stops using the service, sets an additional service, etc., which complicates service operation work.
(2) Realization of additional services requires cooperation between a plurality of devices, which increases development costs.
(3) The equipment cost for the VoIP server and management operation function and the transfer gateway device in the Internet telephone network, and the operation and maintenance cost of these additional devices are required.
(4) Since both networks are connected in the transfer gateway device, there is a possibility that the call quality and the connection quality are deteriorated.

  Furthermore, there are the following problems in the above prior art. In the above prior art, when the called user is connected to the Internet telephone network, a call to the telecommunications number is fixed in the IP telephone network in order to enable an incoming call with a 050 number or the like. The information is transferred to the transfer gateway device, and at the same time, a guidance to connect to the Internet telephone network is sent to the caller. For this reason, even if the called user is connected to the IP telephone network, calls to that telecommunications number will always be connected via the Internet telephone network, and the caller will always receive guidance. Has been sent out.

  The present invention has been made in view of the above points, and is intended for more appropriate, simple and efficient connection of a call using a telecommunication number from an IP telephone network or a general telephone network to the Internet network. The purpose is to provide technology.

  The above-described problem is a call control system in an IP telephone network to which telecommunications numbers are assigned, from a calling terminal connected to the IP telephone network or the general telephone network to the Internet network or the IP telephone network. The IP telephone terminal receives a call connection request for the connected IP telephone terminal, and the IP telephone terminal is based on the telecommunication number of the IP telephone terminal included in the call connection request and the information stored in the storage means of the call control system. Determining means for determining whether or not connected to the Internet network, and transferring a call to the Internet network when the determining means determines that the IP telephone terminal is connected to the Internet network Guidance transmitting means for transmitting a guidance for notifying the calling terminal to the calling terminal, and sending the call connection request to the IP telephone terminal, Are solved by the call control system, characterized in that a call connection control means for performing call connection between the calling terminal.

  According to the present invention, in a call control system in an IP telephone network, when a call connection request is received from a calling terminal, it is determined whether or not the destination IP telephone terminal is connected to the Internet network. When it is determined that it is connected to the Internet, the guidance for notifying the transfer of the call to the Internet network is sent to the calling terminal, so that the electric communication from the IP telephone network or the general telephone network to the Internet network Call connection using numbers can be realized more appropriately, simply and efficiently.

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

(Outline of the embodiment)
First, the system configuration and basic operation in the present embodiment will be described with reference to FIG. As shown in FIG. 4, the system according to the present embodiment is different from the configuration of the prior art shown in FIG. 1 in that no VoIP server is installed in the Internet network 21 and no transfer gateway device is installed. That is, in the configuration of FIG. 4, terminals in the Internet network 21 can be directly connected to the VoIP server 25 of the IP telephone network 23 at the IP layer. When connecting to the VoIP server 25, authentication using an ID, a password, or the like is performed.

  The IP telephone network 23 is provided with a pre-transfer guidance sending terminal 27 for sending pre-transfer guidance. Of course, the VoIP server 25 and the pre-transfer guidance sending terminal 27 may be configured as one device.

  Next, the basic operation will be described. In the present embodiment, it is assumed that an IP telephone terminal 29 to which an electric communication number is assigned in the IP telephone network 23 is connected to the Internet network 21 or the IP telephone network 23. FIG. 4 shows a case where the IP telephone terminal 29 is connected to the Internet network 21.

  When the VoIP server 25 receives a call connection request from the calling terminal 33 connected to the general telephone network 31 or the IP telephone network 23 (general telephone network 31 in FIG. 4) to the destination terminal (IP telephone terminal 29) (step 31). The VoIP server 25 determines whether the IP telephone terminal 29 corresponding to the destination telephone number included in the call connection request is connected to the IP telephone network 23 or the Internet network 21, and If it is determined that the telephone network 23 is connected, normal call connection processing is performed. If it is determined that it is connected to the Internet network 21, the pre-transfer guidance is sent to the calling terminal 33 (steps 32 and 33), and then the call connection processing to the IP telephone terminal 29 that is the called terminal is performed. (Step 34), the IP telephone terminal 29 and the calling terminal 33 are connected by call and a call is made.

  There are the following methods for determining whether the IP telephone terminal 29 is connected to the IP telephone network 23 or the Internet network 21 in order to determine whether or not to transmit the pre-transfer guidance.

<Method 1>
When the IP telephone terminal 29 registers (registers) with the VoIP server 25 of the IP telephone network 23, whether the IP telephone terminal 29 itself is currently connected to the IP telephone network 23 or the Internet network 21. VoIP server 25 is notified of the identification result (called Internet connection status), and VoIP server 25 holds the Internet connection status in association with the telephone number and IP address of IP telephone terminal 29. When a call connection request is made to the IP telephone terminal 29, the determination is made by referring to the Internet connection state.

<Method 2>
When the IP telephone terminal 29 registers (registers) with the VoIP server 25 of the IP telephone network 23, the IP telephone terminal 29 uses the IP address received from the IP telephone terminal 29 so that the IP telephone terminal 29 is currently Identifying whether it is connected to the telephone network 23 or the Internet network 21, and holding the identification result (Internet connection state) in association with the telephone number and IP address of the IP telephone terminal 29; When a call connection request is made to the IP telephone terminal 29, the determination is made by referring to the Internet connection state.

<Method 3>
When receiving a call connection request to the IP telephone terminal 29, the VoIP server 25 refers to the IP address of the IP telephone terminal 29 registered by the registration request to the VoIP server 25 by the IP telephone terminal 29. It is determined whether the previous IP telephone terminal 29 is currently connected to the IP telephone network 23 or the Internet network 21.

<Method 4>
The IP phone terminal 29 is classified into a terminal that can be connected not only from the IP phone network 23 but also from the Internet network 21 (Internet connection IP phone terminal) and a terminal that can be connected only from the IP phone network 23 (IP phone dedicated terminal). Separately, when setting subscriber data in the VoIP server 25 of the IP telephone network 23 by application from the user, the type of IP telephone terminal used by the user (Internet connection IP telephone terminal or IP telephone dedicated terminal) Is set in the VoIP server 25 in advance. When a call connection request to the IP telephone terminal 29 is received, the determination is made with reference to the type. Note that this method does not determine whether the IP telephone terminal 29 is actually connected to the IP telephone network 23 or the Internet network 21, but the terminal type is an IP telephone dedicated terminal. If the terminal type is an Internet connection IP telephone terminal, it is assumed that it is connected to the Internet network 21.

<Method 5, 6, 7>
In addition to the method 4, the Internet connection state is further identified, and the determination is made from both the type of the IP telephone terminal 29 and the Internet connection state. There are methods 1, 2, and 3 as methods for identifying the Internet connection state, which correspond to methods 5, 6, and 7, respectively.

<Summary of sending guidance before transfer>
In each of the above methods, a table summarizing whether or not guidance transmission before transfer is performed for each state is shown in FIGS.

  FIG. 5 is a diagram corresponding to the methods 1, 2, and 3. In this case, if it is determined that the destination IP telephone terminal 29 is connected to the IP telephone network 23, call connection processing for incoming is performed without sending the pre-transfer guidance, and the destination IP When it is determined that the telephone terminal 29 is connected to the Internet network 21, a pre-transfer guidance is transmitted to perform call connection processing for incoming calls.

  FIG. 6 is a diagram corresponding to the method 4. In this case, if the destination IP phone terminal 29 is an “IP phone dedicated terminal”, the call connection processing for the incoming call is performed without sending the pre-transfer guidance, and the destination IP phone terminal 29 performs “Internet connection”. If it is an “IP telephone terminal”, it transmits a pre-transfer guidance and performs call connection processing for incoming calls.

  In addition, since method 4 does not identify the Internet connection status, it cannot be identified when an IP phone dedicated terminal is connected to the Internet network 21, but this can be prevented by a non-technical method such as a usage rule. Will do. Also, when an Internet-connected IP telephone terminal is connected to the IP telephone network 23, the pre-transfer guidance is sent to the caller, but it is considered that there is no problem in terms of caller protection.

  FIG. 7 corresponds to the methods 5, 6, and 7. In this case, the operation as shown in FIG. 7 is performed in each combination of states. If it is determined that the IP phone dedicated terminal is connected to the Internet network 21, registration is rejected or registration is allowed and only incoming calls are rejected. In addition, since registration cannot be rejected in method 7, registration is once accepted, but incoming calls are rejected.

(Detailed operation)
Next, operations corresponding to the respective methods will be described in detail with reference to FIGS.

<< Method 1 >>
FIG. 8 is a diagram showing a sequence of Method 1 when an incoming call is made from an originating terminal 33 connected to the general telephone network 31 to an IP telephone terminal 29 (hereinafter referred to as a called terminal) connected to the Internet network 21. is there.

  First, the telephone number of the destination terminal 29 is registered in the VoIP server 25 as a pre-process (step 41). Thereafter, the destination terminal 29 connects to the Internet network 21 and detects the assigned IP address (step 42). Then, the destination terminal 29 determines the Internet connection state. A method for determining the Internet connection state will be described later.

  In this example, since the destination terminal is connected to the Internet network, the Internet connection state is determined to be “inside the Internet network” (step 43). In step 44, the destination terminal 29 transmits a registration request including a telephone number, an IP address, and an Internet connection status to the VoIP server 25.

  The VoIP server 25 that has received the registration request stores the IP address and the Internet connection state in the storage device as a table in association with the telephone number (step 45). An example of a table stored in the VoIP server 25 is shown in FIG. The table shown in FIG. 9 indicates that the IP address of the terminal whose telephone number is 05033001234 is 66.1.2.3 and the Internet connection state is “Internet network connection”. Note that the terminal with the telephone number 05033001236 indicates that the terminal is not registered. That is, even if there is a call connection request to this terminal, no incoming call is made to this terminal.

  Returning to FIG. 8, when a calling operation is performed by dialing the telephone number of the called terminal 29 at the calling terminal 33, a call connection request including the telephone number of the called terminal 29 is sent from the calling terminal 33. The call connection request is sent to the VoIP server via the gateway device 35 that connects the general telephone network 31 and the IP telephone network 23 (step 46).

  The VoIP server 25 that has received the call connection request searches the table shown in FIG. 9 using the telephone number of the destination terminal 29 included in the call connection request, so that the Internet connection state of the destination terminal 29 is “Internet network”. "Inside" is detected (step 47).

  Since the Internet connection state is “inside the Internet”, the VoIP server 25 determines to send the pre-transfer guidance to the calling terminal 33, sends a guidance transmission instruction to the pre-transfer guidance sending terminal 27, and A provisional response is returned to the terminal (steps 48 and 49).

  Receiving the guidance transmission instruction, the pre-transfer guidance transmission terminal 27 transmits the pre-transfer guidance (“transfer to Internet telephone service”, etc.) (step 50). The pre-transfer guidance is media-converted by the gateway device 35, sent to the calling terminal 33, and listened to by the user of the calling terminal (steps 51 and 52). When the transmission of the pre-transfer guidance is completed, the pre-transfer guidance transmission terminal 27 transmits a guidance end signal to the VoIP server 25 (step 53), and transmits a sound during transfer or silence (step 54).

  Note that the above-mentioned guidance before transfer is so-called early media, and charging related to sending the guidance before transfer is not made to the calling terminal 33.

  In step 55, the VoIP server obtains the IP address of the destination terminal 29 by searching the table shown in FIG. 9 using the telephone number included in the call connection request, and uses the IP address for the destination terminal 29. A call connection request is transmitted (step 56).

  The called terminal 29 that has received the call connection request makes a call and sends a response indicating that the call is being made to the VoIP server 25 (steps 57 and 58). This response is transmitted to the gateway device 35 via the VoIP server 25. The gateway device 35 that has received the response transmits a ringback tone (RBT) to the calling terminal 35, and the user of the calling terminal 33 listens to it (steps 59 and 60). Further, the connection is released from the VoIP server 25 to the pre-transfer guidance transmission terminal 27 (step 61).

  When the destination terminal 29 detects off-hook (step 62), the destination terminal 29 transmits a connection response indicating that the connection is successful (step 63). Thereafter, a call connection is made between the called terminal 29 and the calling terminal 33 and a call is made (step 64).

  Another example of the method 1 sequence is shown in FIG. In the example of FIG. 8 described above, the pre-transfer guidance is transmitted as early media. However, in the example of FIG. 10, the pre-transfer guidance is transmitted by performing the same process as the connection process for a normal call. Since step 47 and subsequent steps are different from those in FIG. 8, only step 47 and thereafter will be described.

  In step 47, after determining that the Internet connection state is “inside the Internet”, the VoIP server 25 transmits an incoming call request (call connection request) to the pre-transfer guidance transmission terminal 27 (step 71). The pre-transfer guidance sending terminal 27 sends a response indicating that it is calling (step 72), and the response is sent to the gateway device 35 via the VoIP server 25, and the gateway device 35 generates a ringback tone. The user of the calling terminal 33 listens to the ringback tone (steps 73 and 74). Thereafter, the pre-transfer guidance transmission terminal 27 returns a connection response indicating that the connection is successful (step 75). The pre-transfer guidance sending terminal 27 sends pre-transfer guidance to the calling terminal 33, and the user of the calling terminal 33 listens to the pre-transfer guidance (steps 76 and 77).

  When the transmission of the pre-transfer guidance is completed, the pre-transfer guidance transmission terminal 27 transmits a guidance end signal to the VoIP server 25 (step 78), and transmits a sound during transfer or silence (step 79).

  In step 80, the VoIP server 25 acquires the IP address of the destination terminal 29 using the telephone number included in the call connection request, and transmits the call connection request to the destination terminal 29 using the IP address (step 81). ).

  The called terminal 29 that has received the call connection request makes a call and transmits a response indicating that the call is being made to the VoIP server (steps 82 and 83). Upon receiving this response, the VoIP server 25 transmits an RBT transmission instruction to the pre-transfer guidance transmission terminal 27 (step 84), and the pre-transfer guidance transmission terminal 27 transmits a ringback tone to the calling terminal 33. The user of the calling terminal 33 listens to it (steps 85 and 86).

  When the destination terminal 29 detects off-hook (step 87), the destination terminal 29 transmits a connection response indicating that the connection is successful (step 88). The VoIP server 25 that has received the connection response transmits an RBT stop instruction to the pre-transfer guidance transmission terminal 27 and also transmits a connection response including a media switching instruction to the gateway device 35 (steps 89 and 90). Thereafter, a call is made between the called terminal 29 and the calling terminal 33 via the gateway device 35 (step 91). Also, a disconnection signal for terminating the connection is sent from the VoIP server 25 to the pre-transfer guidance sending terminal 27 (step 92).

<Processing for normal incoming calls>
For reference, FIG. 11 shows a sequence when the called terminal is connected to the IP telephone network in Method 1. The process shown in FIG. 11 is the same as the process shown in FIG. 8 except that the Internet connection state is “inside the IP telephone network” and the process related to the pre-transfer guidance is not performed.

<Example of Internet connection status determination method>
In Method 1, as a method for the destination terminal 29 to determine the Internet connection state, an ICMP (Internet Control Message Protocol) echo request is made for an IP address that can be accessed only from within the IP telephone network using the Ping function in the destination terminal 29. A method for performing message transmission will be described.

  In this method, as shown in FIG. 12, when a source of an IP packet is outside the IP telephone network, a server 42 that responds to Ping is installed on the IP telephone network 23 through a firewall 40 that does not allow the packet to communicate. . A sequence in this method will be described with reference to FIG.

  When the IP telephone terminal 29 connected to the Internet network 21 transmits an echo request message to a predetermined IP address (step 121), the firewall 40 has an IP address of the source IP telephone terminal 29 of a terminal outside the IP telephone network 23. The IP address is determined and the echo request message is not transmitted to the server 42. The IP telephone terminal 29 that has transmitted the echo request message determines that it is connected to the Internet network 21 because there is no reply to the echo response message.

When the IP telephone terminal 29 connected to the IP telephone network 23 sends an echo request message to a predetermined IP address (step 122), the firewall 40 communicates the message (step 123) and the server 42 sends an echo response message. Is returned to the IP telephone terminal 29 (steps 124 and 125), and the IP telephone terminal 29 determines that it is connected to the IP telephone network 23.
<< Method 2 >>
Next, the method 2 is demonstrated with reference to the sequence chart of FIG. The difference from Method 1 will be mainly described.

  After the destination terminal 29 connects to the Internet network 21 and detects the assigned IP address (step 131), the destination terminal 29 transmits a registration request including a telephone number and an IP address to the VoIP server 25 (step 132). ).

  The VoIP server 25 that has received the registration request associates the telephone number with the IP address and stores it in the storage device as a table (step 133). Further, the VoIP server 25 determines the Internet connection state of the called terminal 29 from the IP address of the called terminal 29, and stores it in the storage device in association with the telephone number and the IP address (step 134). Here, for example, the VoIP server 25 holds a range of IP addresses in the IP telephone network, and the Internet connection state is determined based on whether or not the IP address of the destination terminal 29 is within that range. An example of the table held by the VoIP server 25 at this time is as shown in FIG.

  Thereafter, a call connection request including the telephone number of the destination terminal 29 is sent from the calling terminal 33 (step 135), and the VoIP server 25 that has received the request uses the telephone number of the destination terminal 29 included in the call connection request. By searching the table shown in FIG. 9, it is detected that the Internet connection state of the destination terminal 29 is “in the Internet” (step 136). Subsequent processing is the same as that of Method 1 (FIG. 8 or FIG. 10).

<< Method 3 >>
Next, the method 3 is demonstrated with reference to the sequence chart of FIG. In the following, parts different from method 1 will be mainly described.

  After the destination terminal 29 connects to the Internet network 21 and detects the assigned IP address (step 141), the destination terminal 29 transmits a registration request including a telephone number and an IP address to the VoIP server 25 (step 142). ). The VoIP server 25 that has received the registration request associates the telephone number with the IP address and stores it in the storage device as a table (step 143). An example of the table is as shown in FIG.

  Thereafter, a call connection request including the telephone number of the destination terminal 27 is transmitted from the calling terminal 33 (step 144), and the VoIP server 25 that receives the request uses the telephone number of the destination terminal 29 included in the call connection request. The IP address of the called terminal 29 is obtained by searching the table shown in FIG. 16 (step 145), and the Internet connection status of the called terminal 29 is determined from the IP address (step 146). The determination can be performed by the method described in Method 2. In this example, it is detected that the Internet connection state of the destination terminal 29 is “in the Internet”. Subsequent processing is the same as that of Method 1 (FIG. 8 or FIG. 10).

<< Method 4 >>
Next, the method 4 is demonstrated with reference to the sequence chart of FIG. In the following, parts different from method 1 will be mainly described.

  In the method 4, at the pre-processing stage, the telephone number of the called terminal 29 and the Internet connection terminal identification information are stored in the storage device in association with the VoIP server 25 (step 151). Here, “Internet connection IP telephone terminal” is stored as the Internet connection terminal identification information.

  After the destination terminal 29 connects to the Internet network 21 and detects the assigned IP address (step 152), the destination terminal 29 transmits a registration request including a telephone number and an IP address to the VoIP server 25 (step 153). ).

  The VoIP server 25 that has received the registration request associates the telephone number with the IP address and stores it in the storage device as a table (step 154). An example of a table stored in the VoIP server at this time is shown in FIG. The table in method 4 corresponds to a table in which “Internet connection status” in the table in method 1 and 2 (FIG. 9) is replaced with “Internet connection terminal identification information”.

  Thereafter, a call connection request including the telephone number of the called terminal 29 is transmitted from the calling terminal 33 (step 155), and the VoIP server 25 that has received the request uses the telephone number of the called terminal 29 included in the call connection request. By searching the table shown in FIG. 18, it is detected that the destination terminal 29 is an “Internet connection IP telephone terminal” (step 156). As a result, the VoIP server 25 determines to transmit the pre-transfer guidance and performs subsequent processing. Subsequent processing is the same as that of Method 1 (FIG. 8 or FIG. 10).

<< Method 5 >>
Next, method 5 will be described. In Method 5, there are two types of destination terminals and two types of networks to which the destination terminal is connected, so there are a total of four types.

<First case>
First, with reference to FIG. 19, a case will be described in which the type of the destination terminal 29 is an IP telephone dedicated terminal and it is connected to the IP telephone network 23.

  At the pre-processing stage, the telephone number of the called terminal 29 and the Internet connection terminal identification information are associated with the VoIP server 25 and stored in the storage device. Here, "IP phone dedicated terminal" is stored as the Internet connection terminal identification information.

  After the destination terminal 29 connects to the IP telephone network 23 and detects the assigned IP address (step 162), the destination terminal 29 determines the Internet connection state in the same manner as described in the method 1 (step 163). . In this example, since the destination terminal 29 is connected to the IP telephone network, it is determined that the Internet connection state is “inside the IP telephone network”. In step 164, the called terminal transmits a registration request including a telephone number, an IP address, and an Internet connection status to the VoIP server.

  The VoIP server 25 that has received the registration request stores the telephone number, IP address, and Internet connection status in the storage device in association with the Internet connection terminal identification information (step 165). An example of a table stored in the VoIP server 25 at this time is shown in FIG.

  In this example, since an IP telephone dedicated terminal is connected to the IP telephone network 23 as the destination terminal 29, normal incoming call processing is executed in the same manner as the processing in FIG. 11 without performing pre-transfer guidance.

<Second case>
Next, a case where the type of the destination terminal 29 is an IP telephone dedicated terminal and it is connected to the Internet network 21 will be described with reference to FIG.

  At the pre-processing stage, the telephone number of the called terminal 29 and the Internet connection terminal identification information are associated with the VoIP server 25 and stored in the storage device. Here, "IP phone dedicated terminal" is stored as the Internet connection terminal identification information.

  After the destination terminal 29 connects to the Internet network 21 and detects the assigned IP address (step 172), the destination terminal 29 determines the Internet connection state in the same manner as described in Method 1. In this example, since the destination terminal is connected to the Internet network, it is determined that the Internet connection state is “inside the Internet network” (step 173). Then, the destination terminal 29 identifies that it is an “IP phone dedicated terminal” from its registration information, and decides not to perform the registration process (step 174). As a result, the destination terminal 29 cannot make or receive calls unless the destination network is changed to the IP telephone network 23.

  In place of such processing, registration processing is performed in the same manner as in FIG. 19, and when the VoIP server 25 receives a call connection request from the calling terminal 33, an IP telephone is obtained from the Internet connection terminal identification information and the Internet connection state. It is determined that the dedicated terminal is connected to the Internet network 21 and the incoming call connection to the called terminal 29 is not performed, and it is not possible to connect the call to the called terminal 29. It is good also as notifying. It is also possible to connect to an answering machine service or a forwarding telephone service.

<Third case>
Next, a case where the type of the destination terminal 29 is an Internet connection IP telephone terminal and it is connected to the IP telephone network 23 will be described with reference to FIG.

  At the pre-processing stage, the telephone number of the called terminal 29 and the Internet connection terminal identification information are associated with the VoIP server 25 and stored in the storage device. Here, "Internet connection IP telephone terminal" is stored as the Internet connection terminal identification information.

  After the destination terminal 29 connects to the IP telephone network 23 and detects the assigned IP address (step 182), the destination terminal 29 determines the Internet connection state in the same manner as described in the method 1.

  In this example, since the destination terminal 29 is connected to the IP telephone network 23, it is determined that the Internet connection state is “inside the IP telephone network” (step 183). In step 184, the called terminal 29 transmits a registration request including the telephone number, IP address, and Internet connection status to the VoIP server 25.

  The VoIP server 25 that has received the registration request stores the telephone number, IP address, and Internet connection state in the storage device in association with the Internet connection terminal identification information (step 185). Thereafter, normal incoming call processing is executed without performing pre-transfer guidance.

<4th case>
Next, a case where the type of the destination terminal 29 is an Internet-connected IP telephone terminal and is connected to the Internet network 21 will be described with reference to FIG.

  In the pre-processing stage, the telephone number of the called terminal and the Internet connection terminal identification information are stored in the storage device in association with the VoIP server 25 (step 191). Here, "Internet connection IP telephone terminal" is stored as the Internet connection terminal identification information.

  After the destination terminal 29 connects to the Internet network 21 and detects the assigned IP address (step 192), the destination terminal 29 determines the Internet connection state in the same manner as described in the method 1.

  In this example, since the destination terminal 29 is connected to the Internet network 21, it is determined that the Internet connection state is “inside the Internet network” (step 193). In step 194, the destination terminal 29 transmits a registration request including the telephone number, IP address, and Internet connection status to the VoIP server 25.

  The VoIP server 25 that has received the registration request stores the telephone number, IP address, and Internet connection state in the storage device in association with the Internet connection terminal identification information (step 195). Thereafter, in the same way as in method 1, incoming processing including guidance transmission before transfer is performed.

<< Method 6 >>
Next, method 6 will be described. In method 6 as well, there are two types of destination terminals and two types of networks to which the destination terminal is connected, so there may be a total of four types. Hereinafter, the registration of the telephone number and the Internet connection terminal identification information in the pre-processing is the same as that in the method 5, and thus will not be particularly described.

<First case>
First, referring to FIG. 24, a case will be described in which the type of the destination terminal is an IP telephone dedicated terminal and it is connected to the IP telephone network.

  After the destination terminal 29 connects to the IP telephone network 23 and detects the assigned IP address (step 202), the destination terminal 29 transmits a registration request including the telephone number and the IP address to the VoIP server 25 (step 202). 203).

  The VoIP server 25 that has received the registration request determines that the Internet connection status of the called terminal 29 is “within the IP telephone network” in the same manner as in the method 2 from the IP address of the called terminal 29 (step 204), and the telephone number and IP address. Then, the Internet connection state is stored in the storage device in association with the Internet connection terminal identification information (step 205). In the method 6, the table held by the VoIP server 25 is as shown in FIG. Thereafter, normal incoming call processing is executed without performing pre-transfer guidance.

<Second case>
Next, a case where the type of the destination terminal 29 is an IP telephone dedicated terminal and is connected to the Internet network 21 will be described with reference to FIG.

  After the destination terminal 29 connects to the Internet network and detects the assigned IP address (step 212), the destination terminal 29 transmits a registration request including the telephone number and the IP address to the VoIP server 25 (step 213). .

  The VoIP server 25 that has received the registration request determines that the Internet connection state of the destination terminal 29 is “in the Internet” from the IP address of the destination terminal 29 (step 214). The VoIP server 25 identifies that the destination terminal 29 is an “IP phone dedicated terminal”, and transmits a registration rejection signal to the destination terminal 29 (step 215).

  In place of such processing, registration processing is performed in the same manner as in FIG. 24, and when the VoIP server 25 receives a call connection request from the calling terminal 33, an IP telephone is obtained from the Internet connection terminal identification information and the Internet connection state. It is determined that the dedicated terminal is connected to the Internet network 21 and the incoming call connection to the called terminal 29 is not performed, and it is not possible to connect the call to the called terminal 29. It is good also as notifying. It is also possible to connect to an answering machine service or a forwarding telephone service.

<Third case>
Next, with reference to FIG. 26, a case will be described in which the type of the destination terminal 29 is an Internet-connected IP telephone terminal and it is connected to the IP telephone network 23.

  After the destination terminal 29 connects to the IP telephone network 23 and detects the assigned IP address (step 222), the destination terminal 29 transmits a registration request including the telephone number and the IP address to the VoIP server 25 (step 222). 223).

  The VoIP server 25 that has received the registration request determines that the Internet connection state of the called terminal is “within the IP telephone network” from the IP address of the called terminal 29 (step 224), and the telephone number, IP address, and Internet connection state are connected to the Internet. The information is stored in the storage device in association with the terminal identification information (step 225). Thereafter, normal incoming call processing without transfer guidance is executed.

<4th case>
Next, with reference to FIG. 27, the case where the type of the destination terminal 29 is an Internet-connected IP telephone terminal and it is connected to the Internet network 21 will be described.

  After the destination terminal 29 connects to the Internet network 21 and detects the assigned IP address (step 232), the destination terminal 29 transmits a registration request including a telephone number and an IP address to the VoIP server 25 (step 233). ).

  The VoIP server 25 that has received the registration request determines that the Internet connection status of the destination terminal 29 is “inside the Internet” from the IP address of the destination terminal 29 (step 234), and the telephone number, IP address, and Internet connection status are connected to the Internet. It is stored in the storage device in association with the terminal identification information (step 235). Thereafter, similarly to the method 1, the incoming call processing with the transfer guidance is executed.

<< Method 7 >>
Next, method 7 will be described. In method 7 as well, there are two types of destination terminals and two types of networks to which the destination terminal is connected, so there are four types in total. Hereinafter, the registration of the telephone number and the Internet connection terminal identification information in the pre-processing is the same as that in the method 5, and thus will not be particularly described.

<First case>
First, with reference to FIG. 28, a case will be described in which the type of the called terminal 29 is an IP telephone dedicated terminal and is connected to the IP telephone network 23.

  After the destination terminal 29 is connected to the IP telephone network 23 and detects the assigned IP address (step 242), a registration request including the telephone number and the IP address is transmitted to the VoIP server 25 (step 243).

  The VoIP server 25 that has received the registration request stores the telephone number and IP address in the storage device as a table in association with the Internet connection terminal identification information (step 244). An example of a table in method 7 is shown in FIG.

  Thereafter, a call connection request including the telephone number of the destination terminal 29 is transmitted from the calling terminal 33 (step 245), and the VoIP server 25 that has received the request uses the telephone number of the destination terminal 29 included in the call connection request. The IP address of the called terminal 29 is obtained by searching the table shown in FIG. 29 (step 246), and it is determined from the IP address that the Internet connection state of the called terminal 29 is “inside the IP telephone network” (step 246). 247). Then, a call connection request is transmitted to the destination terminal 29 using the IP address (step 248). Thereafter, as in FIG. 11, normal incoming call processing without pre-transfer guidance is performed.

<Second case>
Next, a case where the type of the destination terminal 29 is an IP telephone dedicated terminal and it is connected to the Internet network 21 will be described with reference to FIG.

  After the destination terminal 29 connects to the Internet network 21 and detects the assigned IP address (step 252), it transmits a registration request including the telephone number and the IP address to the VoIP server 25 (step 253). The VoIP server 25 that has received the registration request stores the telephone number and IP address in the storage device as a table in association with the Internet connection terminal identification information (step 254).

  Thereafter, a call connection request including the telephone number of the called terminal 29 is transmitted from the calling terminal 33 (step 255), and the VoIP server 25 that has received the call connection table uses the telephone number of the called terminal 29 included in the call connection request. The IP address of the called terminal 29 is acquired by searching (step 256), and it is determined from the IP address that the Internet connection state of the called terminal 29 is “in the Internet” (step 257).

  When the VoIP server 25 identifies that the called terminal 29 is an “IP phone dedicated terminal”, it sends a disconnection signal to reject the call connection request from the calling terminal 33 (step 258). In addition, it is good also as notifying to the calling terminal 33 by a busy sound or a guidance that a call cannot be connected to the receiving terminal 29 now. If there is an additional service contract such as an answering machine service or a forwarding telephone service, the additional service may be activated here.

<Third case>
Next, a case where the type of the destination terminal 29 is an Internet connection IP telephone terminal and it is connected to the IP telephone network 23 will be described with reference to FIG.

  After the destination terminal 29 connects to the IP telephone network 23 and detects the assigned IP address (step 262), a registration request including the telephone number and the IP address is transmitted to the VoIP server 25 (step 263). The VoIP server 25 that has received the registration request stores the telephone number and IP address in the storage device as a table in association with the Internet connection terminal identification information (step 264).

  Thereafter, a call connection request including the telephone number of the called terminal 29 is transmitted from the calling terminal 33 (step 265), and the VoIP server 25 that has received the call connection request uses the telephone number of the called terminal 29 included in the call connection request. By searching the table, the IP address of the called terminal 29 is acquired (step 266), and it is determined from the IP address that the Internet connection state of the called terminal 29 is “within IP telephone network” (step 267). Then, a call connection request is transmitted to the destination terminal 29 using the IP address (step 268). Thereafter, as in FIG. 11, normal incoming call processing without pre-transfer guidance is performed.

<4th case>
Next, with reference to FIG. 32, a case will be described in which the type of the destination terminal 29 is an Internet connection IP telephone terminal and it is connected to the Internet network 21.

  After the destination terminal 29 connects to the Internet network 21 and detects the assigned IP address (step 272), a registration request including the telephone number and the IP address is transmitted to the VoIP server 25 (step 273). The VoIP server 25 that has received the registration request stores the telephone number and IP address in the storage device in association with the Internet connection terminal identification information as a table (step 274).

  Thereafter, a call connection request including the telephone number of the called terminal 29 is transmitted from the calling terminal 33 (step 275), and the VoIP server 25 that has received the call connection request uses the telephone number of the called terminal 29 included in the call connection request. By searching the table, the IP address of the called terminal 29 is acquired (step 276), and it is determined from the IP address that the Internet connection state of the called terminal 29 is “in the Internet” (step 277). Thereafter, in the same manner as in Method 1, incoming call processing with pre-transfer guidance is performed.

(Functional configuration example of VoIP server)
FIG. 33 shows a functional configuration example of the VoIP server 25. As shown in FIG. 33, the VoIP server 25 includes a network communication unit 251, a registration processing unit 252, a determination processing unit 253, a call connection control unit 254, and a data storage unit 255.

  The network communication unit 251 is a functional unit for transmitting and receiving data via the network. The registration processing unit 252 performs a registration process in which each data is stored in the data storage unit 255 in response to a registration request from the terminal. It is a functional part. Corresponding to methods 2 and 6, there is also a function of identifying the connection destination network of the terminal from the IP address.

  After receiving the call connection request from the calling terminal, the determination processing unit 253 determines whether the destination terminal is connected to the IP telephone network or the Internet network by the above-described methods, and before the transfer A function is provided for determining whether or not guidance transmission is required, and for transmitting guidance before transfer to the pre-transfer guidance transmission terminal 27 when it is necessary to transmit guidance before transfer. The call connection control unit 254 is a functional unit that performs processing for call connection between terminals. The data storage unit 255 stores various data related to processing.

  The functional configuration of the VoIP server 25 is not limited to that shown in FIG. 33, and any configuration may be used as long as the operations described so far can be realized. The VoIP server 25 may be provided with a pre-transfer guidance transmission function.

  The VoIP server 25 can be realized by causing a general computer having a CPU, a storage device, and the like to execute a program describing processing corresponding to the operations described so far. The program can be downloaded from a network, stored in a computer-readable recording medium such as a CD-ROM or memory, and distributed.

(Effect of embodiment)
By using the configuration described in the present embodiment, the network configuration for providing the service without using the VoIP server and the transfer gateway device of the Internet telephone network, which was necessary in the prior art, is simplified and viewed from the service user. In some cases, functions equivalent to those of the prior art are provided. This has the following effects.
(1) When a user starts using, stops using, or sets an additional service, it is only necessary to make settings only for the VoIP server of the IP telephone network, which simplifies and increases the efficiency of service operation.
(2) Since the development of additional services requires mainly development of the IP telephone network, development costs are reduced.
(3) The equipment cost for the VoIP server and the management operation function and the transfer gateway device in the Internet telephone network and the operation / maintenance cost of these additional devices, which are necessary in the prior art, are unnecessary.
(4) By eliminating the transfer gateway device and simplifying the connection between the Internet network and the IP telephone network, call quality and connection quality can be reduced or minimized.
(5) It is possible to realize a terminal and a service for making a call by freely moving between the IP telephone network and the Internet network.

  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.

It is a figure which shows the system configuration | structure of a prior art. It is a sequence chart which shows operation | movement of the system in a prior art. It is a figure which shows the example of registration data in a prior art. It is a figure for demonstrating the system configuration | structure and basic operation | movement in embodiment of this invention. FIG. 11 is a summary diagram of pre-transfer guidance transmission operations corresponding to methods 1, 2, and 3; It is a summary figure of the guidance transmission operation before the transfer corresponding to the method 4. FIG. 10 is a summary diagram of pre-transfer guidance transmission operations corresponding to methods 5, 6, and 7; 6 is a sequence chart for explaining an operation in Method 1. It is a figure which shows an example of the table which a VoIP server stores in the methods 1 and 2. FIG. 10 is a sequence chart for explaining another example of the operation in the method 1; It is a sequence chart which shows a normal incoming call process. It is a figure for demonstrating the method for discriminating an internet connection state in the methods 1 and 5. FIG. It is a figure for demonstrating the method for discriminating an internet connection state in the methods 1 and 5. FIG. 10 is a sequence chart for explaining an operation in Method 2. 10 is a sequence chart for explaining an operation in Method 3. 10 is a diagram illustrating an example of a table stored by a VoIP server in Method 3. FIG. 10 is a sequence chart for explaining an operation in Method 4. It is a figure which shows an example of the table which a VoIP server stores in the method 4. FIG. 10 is a sequence chart for explaining an operation in a first case in Method 5. It is a figure which shows an example of the table which a VoIP server stores in the methods 5 and 6. FIG. 10 is a sequence chart for explaining the operation in the second case in Method 5. 10 is a sequence chart for explaining the operation in the third case in method 5. 10 is a sequence chart for explaining the operation in the fourth case in method 5. 10 is a sequence chart for explaining an operation in a first case in Method 6. 10 is a sequence chart for explaining the operation in the second case in Method 6. 10 is a sequence chart for explaining the operation in the third case in method 6. 10 is a sequence chart for explaining the operation in the fourth case in method 6. 10 is a sequence chart for explaining an operation in a first case in method 7. It is a figure which shows an example of the table which a VoIP server stores in the method 7. FIG. 10 is a sequence chart for explaining the operation in the second case in Method 7. 10 is a sequence chart for explaining the operation in the third case in method 7. 10 is a sequence chart for explaining the operation in the fourth case in method 7. It is a figure which shows the function structural example of a VoIP server.

Explanation of symbols

3 Internet telephone network 5 Transfer gateway device 7, 23 IP telephone network 1, 9, 25 VoIP server 10, 32 Exchange 11, 31 General telephone network 13, 35 Gateway device 21 Internet network 29 IP telephone terminal, destination terminal 27 Guidance before transfer Sending terminal 33 Calling terminal 251 Network communication unit 252 Registration processing unit 253 Determination processing unit 254 Call connection control unit 255 Data storage unit

Claims (12)

A call control system in an IP telephone network to which a telecommunication number is assigned,
A call connection request for the IP telephone terminal connected to the Internet network or the IP telephone network is received from the calling terminal connected to the IP telephone network or the general telephone network, and the IP telephone terminal included in the call connection request Determining means for determining whether the IP telephone terminal is connected to the Internet network based on a telecommunication number and information stored in the storage means of the call control system;
Guidance transmission means for transmitting a pre-transfer guidance to the calling terminal when the determination means determines that the IP telephone terminal is connected to the Internet network;
And a call connection control means for performing call connection between the calling terminal and the IP telephone terminal by transmitting a call connection request to the IP telephone terminal,
The storage means includes terminal type information indicating whether the IP telephone terminal is an IP telephone dedicated terminal that can be used only in an IP telephone network or an Internet connection IP telephone terminal that can be used not only in the IP telephone network but also in the Internet network. It is stored in association with the telecommunications number of the IP phone terminal,
When the terminal type information associated with the telecommunications number of the IP telephone terminal is information indicating the Internet-connected IP telephone terminal, the determining means is that the IP telephone terminal is connected to the Internet network The call control system characterized by determining . A call control system in an IP telephone network to which a telecommunication number is assigned,
A call connection request for the IP telephone terminal connected to the Internet network or the IP telephone network is received from the calling terminal connected to the IP telephone network or the general telephone network, and the IP telephone terminal included in the call connection request Determining means for determining whether the IP telephone terminal is connected to the Internet network based on a telecommunication number and information stored in the storage means of the call control system;
Guidance transmission means for transmitting a pre-transfer guidance to the calling terminal when the determination means determines that the IP telephone terminal is connected to the Internet network;
And a call connection control means for performing call connection between the calling terminal and the IP telephone terminal by transmitting a call connection request to the IP telephone terminal,
The storage means includes terminal type information indicating whether the IP telephone terminal is an IP telephone dedicated terminal that can be used only in an IP telephone network or an Internet connection IP telephone terminal that can be used not only in the IP telephone network but also in the Internet network. It is stored in association with the telecommunications number of the IP phone terminal,
When it is determined that the IP telephone terminal is connected to the Internet network, and the IP telephone terminal is the IP telephone dedicated terminal, the call control system does not perform processing for call connection. Feature call control system. A call control system in an IP telephone network to which a telecommunication number is assigned,
A registration request including the telecommunication number and IP address of the IP telephone terminal is received from an Internet network or an IP telephone terminal connected to the IP telephone network, and the IP telephone terminal is connected to the Internet network from the IP address. A registration unit that stores the determination result in the storage unit of the call control system in association with the telecommunication number and the IP address;
From the IP telephone network or public telephone connected master station to network, the IP telephone receives a call connection request to the terminal, said the said the call connection telecommunication number of the IP telephone terminals in the request call control system Determining means for determining whether or not the IP telephone terminal is connected to the Internet network based on information stored in a storage means;
Guidance transmission means for transmitting a pre-transfer guidance to the calling terminal when the determination means determines that the IP telephone terminal is connected to the Internet network;
And a call connection control means for performing call connection between the calling terminal and the IP telephone terminal by transmitting a call connection request to the IP telephone terminal,
The storage means includes terminal type information indicating whether the IP telephone terminal is an IP telephone dedicated terminal that can be used only in an IP telephone network or an Internet connection IP telephone terminal that can be used not only in the IP telephone network but also in the Internet network. It is stored in association with the telecommunications number of the IP phone terminal,
When it is determined by the registration means that the IP telephone terminal is connected to the Internet network, and the IP telephone terminal is the IP telephone dedicated terminal, the registration means includes the IP telephone terminal IP A call control system , wherein a registration process for storing an address in the storage means is not performed . A call control device in an IP telephone network to which a telecommunication number is assigned,
A call connection request for the IP telephone terminal connected to the Internet network or the IP telephone network is received from the calling terminal connected to the IP telephone network or the general telephone network, and the IP telephone terminal included in the call connection request Determining means for determining whether the IP telephone terminal is connected to the Internet network based on a telecommunication number and information stored in the storage means of the call control device;
Guidance transmission instruction means for instructing the guidance transmission apparatus to transmit the pre-transfer guidance when the determination means determines that the IP telephone terminal is connected to the Internet network;
And a call connection control means for performing call connection between the calling terminal and the IP telephone terminal by transmitting a call connection request to the IP telephone terminal,
The storage means includes terminal type information indicating whether the IP telephone terminal is an IP telephone dedicated terminal that can be used only in an IP telephone network or an Internet connection IP telephone terminal that can be used not only in the IP telephone network but also in the Internet network. It is stored in association with the telecommunications number of the IP phone terminal,
When the terminal type information associated with the telecommunications number of the IP telephone terminal is information indicating the Internet-connected IP telephone terminal, the determining means is that the IP telephone terminal is connected to the Internet network A call control device characterized by determining . A call control device in an IP telephone network to which a telecommunication number is assigned,
A call connection request for the IP telephone terminal connected to the Internet network or the IP telephone network is received from the calling terminal connected to the IP telephone network or the general telephone network, and the IP telephone terminal included in the call connection request Determining means for determining whether the IP telephone terminal is connected to the Internet network based on a telecommunication number and information stored in the storage means of the call control device;
Guidance transmission instruction means for instructing the guidance transmission apparatus to transmit the pre-transfer guidance when the determination means determines that the IP telephone terminal is connected to the Internet network;
And a call connection control means for performing call connection between the calling terminal and the IP telephone terminal by transmitting a call connection request to the IP telephone terminal,
The storage means includes terminal type information indicating whether the IP telephone terminal is an IP telephone dedicated terminal that can be used only in an IP telephone network or an Internet connection IP telephone terminal that can be used not only in the IP telephone network but also in the Internet network. It is stored in association with the telecommunications number of the IP phone terminal,
When it is determined that the IP telephone terminal is connected to the Internet network, and the IP telephone terminal is the IP telephone dedicated terminal, the call control device does not perform processing for call connection. A call control device. A call control device in an IP telephone network to which a telecommunication number is assigned,
A registration request including the telecommunication number and IP address of the IP telephone terminal is received from an Internet network or an IP telephone terminal connected to the IP telephone network, and the IP telephone terminal is connected to the Internet network from the IP address. A registration unit that stores the determination result in the storage unit of the call control device in association with the telecommunication number and the IP address;
From the IP telephone network or public telephone connected master station to network, receiving said call connection request to the IP telephone terminal, the telecommunication number and the call control device of the IP telephone terminal included in the call connection request Determining means for determining whether or not the IP telephone terminal is connected to the Internet network based on information stored in a storage means;
Guidance transmission instruction means for instructing the guidance transmission apparatus to transmit the pre-transfer guidance when the determination means determines that the IP telephone terminal is connected to the Internet network;
And a call connection control means for performing call connection between the calling terminal and the IP telephone terminal by transmitting a call connection request to the IP telephone terminal,
The storage means includes terminal type information indicating whether the IP telephone terminal is an IP telephone dedicated terminal that can be used only in an IP telephone network or an Internet connection IP telephone terminal that can be used not only in the IP telephone network but also in the Internet network. It is stored in association with the telecommunications number of the IP phone terminal,
When it is determined by the registration means that the IP telephone terminal is connected to the Internet network, and the IP telephone terminal is the IP telephone dedicated terminal, the registration means includes the IP telephone terminal IP A call control apparatus characterized by not performing registration processing for storing an address in said storage means . A call control method executed by a call control system in an IP telephone network to which a telecommunication number is assigned,
A call connection request for the IP telephone terminal connected to the Internet network or the IP telephone network is received from the calling terminal connected to the IP telephone network or the general telephone network, and the IP telephone terminal included in the call connection request A determination step of determining whether the IP telephone terminal is connected to the Internet network based on a telecommunication number and information stored in the storage means of the call control system;
A guidance transmission step of transmitting a pre-transfer guidance to the calling terminal when it is determined that the IP telephone terminal is connected to the Internet network;
And a call connection control step of performing a call connection between the calling terminal and the IP telephone terminal by transmitting a call connection request to the IP telephone terminal,
The storage means includes terminal type information indicating whether the IP telephone terminal is an IP telephone dedicated terminal that can be used only in an IP telephone network or an Internet connection IP telephone terminal that can be used not only in the IP telephone network but also in the Internet network. It is stored in association with the telecommunications number of the IP phone terminal,
In the determining step, when the terminal type information associated with the telecommunications number of the IP telephone terminal is information indicating the Internet connection IP telephone terminal, the call control system is configured so that the IP telephone terminal A call control method characterized in that it is determined that the connection is established . A call control method executed by a call control system in an IP telephone network to which a telecommunication number is assigned,
A call connection request for the IP telephone terminal connected to the Internet network or the IP telephone network is received from the calling terminal connected to the IP telephone network or the general telephone network, and the IP telephone terminal included in the call connection request A determination step of determining whether the IP telephone terminal is connected to the Internet network based on a telecommunication number and information stored in the storage means of the call control system;
A guidance transmission step of transmitting a pre-transfer guidance to the calling terminal when it is determined that the IP telephone terminal is connected to the Internet network;
And a call connection control step of performing a call connection between the calling terminal and the IP telephone terminal by transmitting a call connection request to the IP telephone terminal,
The storage means includes terminal type information indicating whether the IP telephone terminal is an IP telephone dedicated terminal that can be used only in an IP telephone network or an Internet connection IP telephone terminal that can be used not only in the IP telephone network but also in the Internet network. It is stored in association with the telecommunications number of the IP phone terminal,
When it is determined that the IP telephone terminal is connected to the Internet network, and the IP telephone terminal is the IP telephone dedicated terminal, the call control system does not perform processing for call connection. A call control method. A call control method executed by a call control system in an IP telephone network to which a telecommunication number is assigned,
A registration request including the telecommunication number and IP address of the IP telephone terminal is received from an Internet network or an IP telephone terminal connected to the IP telephone network, and the IP telephone terminal is connected to the Internet network from the IP address. A registration step of determining whether or not and storing the determination result in the storage means of the call control system in association with the telecommunication number and the IP address;
From the IP telephone network or public telephone connected master station to network, the IP telephone receives a call connection request to the terminal, said the said the call connection telecommunication number of the IP telephone terminals in the request call control system A determination step of determining whether or not the IP telephone terminal is connected to the Internet network based on information stored in a storage means;
A guidance transmission step of transmitting a pre-transfer guidance to the calling terminal when it is determined that the IP telephone terminal is connected to the Internet network;
And a call connection control step of performing a call connection between the calling terminal and the IP telephone terminal by transmitting a call connection request to the IP telephone terminal,
The storage means includes terminal type information indicating whether the IP telephone terminal is an IP telephone dedicated terminal that can be used only in an IP telephone network or an Internet connection IP telephone terminal that can be used not only in the IP telephone network but also in the Internet network. It is stored in association with the telecommunications number of the IP phone terminal,
In the registration step, when it is determined that the IP telephone terminal is connected to the Internet network, and the IP telephone terminal is the IP telephone dedicated terminal, the call control system is configured to provide an IP address of the IP telephone terminal. A call control method characterized by not performing registration processing for storing an address in said storage means . A program for causing a computer to function as a call control device in an IP telephone network to which a telecommunication number is assigned, the computer comprising:
A call connection request for the IP telephone terminal connected to the Internet network or the IP telephone network is received from the calling terminal connected to the IP telephone network or the general telephone network, and the IP telephone terminal included in the call connection request Determining means for determining whether or not the IP telephone terminal is connected to the Internet network based on a telecommunication number and information stored in the storage means of the call control device;
Guidance transmission instruction means for instructing the guidance transmission apparatus to transmit a pre-transfer guidance when the determination means determines that the IP telephone terminal is connected to the Internet network;
A program that functions as call connection control means for performing call connection between the IP telephone terminal and the calling terminal by transmitting a call connection request to the IP telephone terminal ,
The storage means includes terminal type information indicating whether the IP telephone terminal is an IP telephone dedicated terminal that can be used only in an IP telephone network or an Internet connection IP telephone terminal that can be used not only in the IP telephone network but also in the Internet network. It is stored in association with the telecommunications number of the IP phone terminal,
When the terminal type information associated with the telecommunications number of the IP telephone terminal is information indicating the Internet-connected IP telephone terminal, the determining means is that the IP telephone terminal is connected to the Internet network judge
A program characterized by that . A program for causing a computer to function as a call control device in an IP telephone network to which a telecommunication number is assigned, the computer comprising:
A call connection request for the IP telephone terminal connected to the Internet network or the IP telephone network is received from the calling terminal connected to the IP telephone network or the general telephone network, and the IP telephone terminal included in the call connection request Determining means for determining whether or not the IP telephone terminal is connected to the Internet network based on a telecommunication number and information stored in the storage means of the call control device;
Guidance transmission instruction means for instructing the guidance transmission apparatus to transmit a pre-transfer guidance when the determination means determines that the IP telephone terminal is connected to the Internet network;
A program that functions as call connection control means for performing call connection between the IP telephone terminal and the calling terminal by transmitting a call connection request to the IP telephone terminal ,
The storage means includes terminal type information indicating whether the IP telephone terminal is an IP telephone dedicated terminal that can be used only in an IP telephone network or an Internet connection IP telephone terminal that can be used not only in the IP telephone network but also in the Internet network. It is stored in association with the telecommunications number of the IP phone terminal,
When it is determined that the IP telephone terminal is connected to the Internet network and the IP telephone terminal is the IP telephone dedicated terminal, the call connection control means does not perform a process for call connection
A program characterized by that . A program for causing a computer to function as a call control device in an IP telephone network to which a telecommunication number is assigned, the computer comprising:
A registration request including the telecommunication number and IP address of the IP telephone terminal is received from an Internet network or an IP telephone terminal connected to the IP telephone network, and the IP telephone terminal is connected to the Internet network from the IP address. Registering means for determining whether or not to store the determination result in the storage means of the call control device in association with the telecommunication number and the IP address;
From the IP telephone network or public telephone connected master station to network, receiving said call connection request to the IP telephone terminal, the telecommunication number and the call control device of the IP telephone terminal included in the call connection request Determining means for determining whether or not the IP telephone terminal is connected to the Internet network based on information stored in a storage means;
Guidance transmission instruction means for instructing the guidance transmission apparatus to transmit a pre-transfer guidance when the determination means determines that the IP telephone terminal is connected to the Internet network;
A program that functions as call connection control means for performing call connection between the IP telephone terminal and the calling terminal by transmitting a call connection request to the IP telephone terminal ,
The storage means includes terminal type information indicating whether the IP telephone terminal is an IP telephone dedicated terminal that can be used only in an IP telephone network or an Internet connection IP telephone terminal that can be used not only in the IP telephone network but also in the Internet network. It is stored in association with the telecommunications number of the IP phone terminal,
When it is determined by the registration means that the IP telephone terminal is connected to the Internet network, and the IP telephone terminal is the IP telephone dedicated terminal, the registration means includes the IP telephone terminal IP No registration process to store the address in the storage means
A program characterized by that .

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