JP2010232830A - Call control server device and method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a call control server device which reduces a communication amount per call, thereby suppressing communication loads and stabilizing the communication state of a VOIP (Voice Over Internet Protocol) telephone system. <P>SOLUTION: A telephone call request reception means 1 receives a telephone call request from a subscriber on a calling side, a connection information acquisition means 2 obtains the connection information of the subscriber from the telephone call request, and a registration means 4 registers the connection information in subscriber information 3a by a storage part 3. When receiving the telephone call request from the subscriber for the second time and thereafter, a registration confirmation means 5 confirms whether or not the connection information of the subscriber is registered on the basis of the subscriber information 3a, an IP connection means 6 connects a subscriber on a called side on the basis of the registered connection information, and a change reception means 7 receives the contract change of the subscriber. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a call control server apparatus that establishes a call between subscribers by performing call control, and more particularly to a call control server apparatus that reduces a communication load by improving a processing sequence.

  2. Description of the Related Art In recent years, a VOIP (Voice Over Internet Protocol) telephone system that relays images and voices as packet data in real time via an IP (Internet Protocol) network has become widespread. In this VOIP telephone system, SIP (Session Initiation Protocol) is widely used as a communication protocol. In addition, a SIP server is normally used as a server terminal that performs call control of a VOIP telephone system according to the SIP protocol.

  In recent years, SIP servers and WEB servers have been linked as call control server devices, and based on requests from WEB servers based on WEB screen operations from subscribers (subscribers), SIP servers can be used for subscribers and destination telephones. A “Click to Dial” service is provided to make calls and generate phone calls. This service is also called “Click to Call” and can be called simply by clicking on the phone number displayed as an icon or link on the PC screen. For this reason, for example, call center Have been used.

  The call control server device includes a SIP server and provides various call processing services. However, the amount of information included in one call tends to increase, and the communication load of the entire system including the call control server device is increased. It is growing.

  As a conventional call control server device, when the "Click to Dial" service is executed, the memory processing of the SIP server is reduced by executing the control process in cooperation between the SIP server device and the phone book server device. A technique that enables this is known (for example, see Patent Document 1).

JP 2006-333220 A

  However, the conventional call control server device increases the amount of information contained in one call and increases the amount of communication per call, increasing the communication load and making the communication state of the VOIP telephone system unstable. It has a problem of making it happen.

  The present invention has been made to solve the above-described problems, and it is an object of the present invention to provide a call control server device that suppresses the communication load by reducing the communication amount per call and stabilizes the communication state of the VOIP telephone system. And

  When the call control server device disclosed in the present application receives a call request from a subscriber, the connection information of the subscriber is registered as subscriber information, and when a call request is received from the subscriber for the second time or later, Based on the registered connection information, a connection is made with the called subscriber.

  When a call request is received from a subscriber, the call control server device disclosed in the present application can omit inquiring the connection information from the subscriber each time, thereby reducing the communication load and stabilizing the communication state of the VOIP telephone system. It can be made.

The block diagram which shows the structure of the call control server apparatus which concerns on the 1st Embodiment of this invention. Data example of call control server apparatus according to first embodiment of the present invention 1 is an overall configuration diagram of a call control server device according to a first embodiment of the present invention. The flowchart at the time of the first call request of the call control server apparatus which concerns on the 1st Embodiment of this invention The flowchart at the time of the second and subsequent call requests of the call control server device according to the first embodiment of the present invention. FIG. 3 is a sequence diagram of the call control server device according to the first embodiment of the present invention. FIG. 3 is a sequence diagram of the call control server device according to the first embodiment of the present invention during an initial call. Flowchart of registration change of call control server device according to the first embodiment of the present invention The block diagram which shows the structure of the call control server apparatus which concerns on other embodiment of this invention.

(First embodiment of the present invention)
Hereinafter, a call control server device according to a first embodiment of the present invention will be described with reference to FIGS.
1 is a block diagram showing a configuration of a call control server apparatus according to a first embodiment of the present invention, FIG. 2 is an example of data of the call control server apparatus described in FIG. 1, and FIG. 3 is described in FIG. The whole block diagram of the call control server apparatus made is shown.

4 is a flowchart when the call control server apparatus described in FIG. 1 makes an initial call request. FIG. 5 is a flowchart when the call control server apparatus described in FIG. 6 shows a sequence diagram of the call control server apparatus described in FIG.
FIG. 7 is a sequence diagram of the call control server device described in FIG. 1 at the time of the initial call, and FIG. 8 is a flowchart of registration change of the call control server device described in FIG.

  In FIG. 1, a call control server device 10 according to this embodiment includes a call request accepting means 1, a connection information obtaining means 2, a storage unit 3, subscriber information 3a, a registration means 4, and a registration confirmation means 5. And an IP connection means 6 and a change accepting means 7. The call request accepting unit 1 accepts a call request 100a transmitted from the calling party PC 100.

  The connection information acquisition means 2 inquires and acquires connection information regarding the subscriber based on the call request reception means 1. This subscriber information 3a includes connection information of a plurality of subscribers. The storage unit 3 stores and reads subscriber connection information in the subscriber information 3a. Based on the connection information acquisition unit 2, the registration unit 4 registers the subscriber information 3 a related to the connection information of each subscriber in the storage unit 3.

  The registration confirmation means 5 confirms whether the connection information of the calling subscriber who has made the call request 100a is registered based on the subscriber information 3a stored by the registration means 4. . The IP connection means 6 connects the calling side and the called side subscribers based on the connection information. Further, the change receiving means 7 receives a change request 100b transmitted from the subscriber's contractor PC 100, thereby receiving a change in the contract relating to the subscriber.

  Further, as shown in FIG. 2, the subscriber information 3a includes a subscriber registration number item, a telephone number item, a subscriber address item, and an SDP information item. This subscriber registration number item indicates a registration number for uniquely identifying a subscriber. This telephone number item indicates the telephone number of this subscriber. This subscriber address item indicates an IP address unique to the calling party contractor PC 100. The SDP information item indicates information related to Session Description Protocol (SDP). This SDP is a protocol that describes a multimedia session for the purpose of starting a multimedia session having a form such as session announcement, session invitation, and the like.

  In addition, as shown in FIG. 3, the overall configuration including the call control server device of the present embodiment is the call control server device 10, the subscriber PC 100, the subscriber A's IP telephone terminal 200A, and the subscriber B's IP. Phone terminal 200B. The call control server device 10 includes a WEB cascon (WEB customer control) 10a, a SIP server (ACT) 10b, and a SIP server (SBY) 10c. The contractor PC 100 is a personal computer terminal owned by the subscriber A.

  This WEB Cascon 10a is a terminal with a WEB customer control function that allows you to access the WEB site via the Internet and make various settings and changes freely. Hyper Text Transfer Protocol; makes a call request to the SIP server via HTTP put out.

  The SIP server (ACT) 10b is an active (active) SIP server among duplexed SIP servers. The SIP server (SBY) 10c is a SIP server in a standby state (standby state) among duplexed SIP servers.

  The SIP server (ACT) 10b includes a WEB cascon reception unit 21, a call processing request unit 22, a SIP signal transmission / reception unit 23, a subscriber information extraction unit 24, a SIP signal generation unit 25, and subscriber information. A table 26 and a subscriber information registration unit 27 are provided. The SIP server (SBY) 10c has the same configuration as the SIP server (ACT) 10b.

  The WEB cascon reception unit 21 functions as the call request reception means 1 and receives a call request from the WEB cascon 10a. The call processing request unit 22 makes a request for SIP signal generation. The SIP signal transmission / reception unit 23 functions as the IP connection unit 6 and the change reception unit 7 and receives registration of new subscriber information and transmits / receives a SIP signal to the subscriber when the contractor PC 100 is changed.

The subscriber information extraction unit 24 functions as the connection information acquisition unit 2 and extracts connection information registered in the subscriber information table 26 based on the SIP signal received from the subscriber.
The SIP signal generator 25 functions as the registration confirmation unit 5 and generates a SIP signal based on connection information registered in the subscriber information table 26.

  The subscriber information table 26 stores connection information of the subscriber 200 as the subscriber information 3a. The subscriber information registration unit 27 functions as the storage unit 3 and the registration unit 4 and registers subscriber connection information in the subscriber information table 26.

  In addition, the SIP server (ACT) 10b and the SIP server (SBY) 10c provide information on call processing from the SIP server (ACT) 10b in order to maintain a duplex configuration system in preparation for system switching at an arbitrary time. Always transfer (inter-system transfer) to the SIP server (SBY) 10c.

The operation of the call control server device according to this embodiment based on the above configuration will be described below.
First, as shown in FIG. 4, the WEB Cascon 10a makes a call request to the SIP server (ACT) 10b based on the first WEB click from the contractor PC 100 (S101). Based on the call request, the WEB cascon reception unit 21 of the SIP server (ACT) 10b notifies the call processing request unit 22 of the call processing request (S102).

  The call processing request unit 22 refers to the subscriber information table 26, confirms that there is no connection information of the IP telephone terminal 200A, and confirms that it is the first call request from the contractor PC 100 ( S103). Here, the call processing request unit 22 searches the subscriber information table 26 using the telephone number included in the data received from the WEB Cascon 10a as a key, and the telephone number registered in the subscriber information table 26. Is not present, it is determined that there is no connection information of the IP telephone terminal 200A.

  The call processing request unit 22 sends a SIP signal generation request according to the “Click to dial” sequence from the call processing request to the SIP signal generation unit 25 (S104). The SIP signal generator 25 generates a SIP signal and transmits it to the IP telephone terminal 200A from the SIP signal transmitter / receiver 23 (S105). The SIP signal transmission / reception unit 23 receives data from the IP telephone terminal 200A and notifies the subscriber information extraction unit 24 (S106).

  The subscriber information extraction unit 24 extracts the connection information of the IP telephone terminal 200A based on the received data, and notifies the subscriber information registration unit 27 (S107). The subscriber information registration unit 27 registers the connection information of the IP telephone terminal 200A in the subscriber information table 26 (S108).

  Next, as shown in FIG. 5, the WEB Cascon 10a makes a call request to the SIP server (ACT) 10b based on the second and subsequent WEB clicks from the contractor PC 100 (S201). Based on the call request, the WEB cascon reception unit 21 of the SIP server (ACT) 10b notifies the call processing request unit 22 of the call processing request (S202).

  The call processing request unit 22 refers to the subscriber information table 26, confirms that the connection information of the IP telephone terminal 200A is present, and confirms that it is a second or subsequent call request from the contractor PC 100. (S203). Here, the call processing request unit 22 searches the subscriber information table 26 using the telephone number included in the data received from the WEB Cascon 10a as a key, and the telephone number registered in the subscriber information table 26. If it matches, it is determined that the connection information of the IP telephone terminal 200A exists.

  The call processing request unit 22 requests the SIP signal generation unit 25 to send INVITE, which is a signal for notifying the information of the IP telephone terminal 200A, to the IP telephone terminal 200B (S204). The SIP signal generator 25 generates INVITE to be sent to the IP telephone terminal 200B from the information of the IP telephone terminal 200A (S205). The SIP signal transmitting / receiving unit 23 transmits the generated INVITE to the IP telephone terminal 200B, and establishes a Real-time Transport Protocol; RTP (Real Time Streaming Protocol) session in the IP telephone terminal 200A and the IP telephone terminal 200B ( S206).

  As shown in FIG. 6, the SIP server (ACT) 10b and the SIP server (SBY) 10c perform two inter-system transfers for establishing the RTP session in S206. As shown in the figure, when the connection information (offer1) of the IP telephone terminal 200A is held in the subscriber information table 26 in S206, the SIP signal transmitting / receiving unit 23 converts the INVITE into the IP Exchange with the telephone terminal 200B (S1 to S4).

  In S1 to S4, the SIP server (ACT) 10b transmits an INVITE related to connection information (offer1) to the IP telephone terminal 200B (S1), and receives this response from the IP telephone terminal 200B (S2). ACK is transmitted to the IP telephone terminal 200B (S4). The SIP server (ACT) 10b and the SIP server (SBY) 10c perform the inter-system transfer once for the series of exchanges of S1 to S4 (S3).

  Next, the SIP signal transmission / reception unit 23 exchanges INVITE with the IP telephone terminal 200A (S5 to S8). In S5 to S8, the SIP server (ACT) 10b transmits an INVITE related to the SDP information (answer1) obtained in the response of S2 to the IP telephone terminal 200A (S5), and the IP telephone terminal 200A transmits the INVITE. A response is received (S6), and ACK is transmitted to the IP telephone terminal 200A (S7). The SIP server (ACT) 10b and the SIP server (SBY) 10c perform the inter-system transfer once for the series of exchanges of S5 to S8 (S8).

  In this way, when the subscriber 200 receives a second or subsequent call request, it is not necessary to execute the INVITE transmission in S105 every time a call request is received. As a result, the communication load can be reduced. Further, the reduction in communication load accompanying the reduction in intersystem transfer increases the maximum call volume as a system, and the number of users that can be accommodated under the SIP server can be increased. In addition, since the message sequence related to RTP session establishment that is not directly related to the call call connection is minimized, the call call itself is not affected, and communication load can be reduced while ensuring communication quality. it can.

  In the above description, the first WEB click only registers the connection information of the IP telephone terminal 200A in the subscriber information table 26, but no call is made. However, the first WEB click makes a call. It is also possible to do so. In this case, the SIP server (ACT) 10b, as shown in FIG. 7, has no connection information (offer1) of the IP telephone terminal 200A in the subscriber information table 26, so INVITE transmission is performed (S9 to S12).

  In S9 to S12, the SIP server (ACT) 10b transmits INVITE related to connection information (offer1) to the IP telephone terminal 200A (S9), and receives this response from the IP telephone terminal 200A (S10). ACK is transmitted to the IP telephone terminal 200B (S11). The SIP server (ACT) 10b and the SIP server (SBY) 10c perform the intersystem transfer once for the series of exchanges of S9 to S12 (S12).

  Next, the SIP signal transmitting / receiving unit 23 exchanges INVITE with the IP telephone terminal 200B (S13 to S15). In S13 to S15, the SIP server (ACT) 10b transmits INVITE to the IP telephone terminal 200B (S13), and receives this response as INVITE of connection information (offer2) from the IP telephone terminal 200B (S14). ). The SIP server (ACT) 10b and the SIP server (SBY) 10c perform the inter-system transfer once for the series of exchanges of S13 to S15 (S15).

  The SIP server (ACT) 10b performs INVITE transmission to notify the IP telephone terminal 200A of the connection information (offer2) of the IP telephone terminal 200B (S16 to S20).

  In S16 to S20, the SIP server (ACT) 10b transmits an INVITE related to connection information (offer2`) to the IP telephone terminal 200A (S16), and receives this response from the IP telephone terminal 200A (S17). ACK is transmitted to the IP telephone terminal 200B (S18). The SIP server (ACT) 10b transmits ACK to the IP telephone terminal 200A (S19). The SIP server (ACT) 10b and the SIP server (SBY) 10c perform the inter-system transfer once for the series of exchanges of S16 to S20 (S20).

  In this way, when a call is made with the first WEB click, as shown in FIG. 7, two INVITE transmissions (A, B) and inter-system transfer (S12) associated with the IP telephone terminal 200A are performed. , S20) occurs, but the second and subsequent web clicks result in one INVITE transmission and intersystem transfer. Thus, even when a call is made with the first WEB click, the second WEB click does not require the INVITE transmission in S105 to be performed every time a call request is received. The communication load can be reduced.

  Further, as shown in FIG. 8, when the IP telephone terminal 200A is changed to the subscriber C200C, the contractor PC 100 performs a web click (S301). By this WEB click, the WEB Cascon 10a receives a REGISTER (registration) signal from the subscriber C200C and sends this signal to the SIP signal transmitting / receiving unit 23 (S302).

  The SIP signal transmitting / receiving unit 23 receives the REGISTER signal and notifies the subscriber information extracting unit 24 (S303). The subscriber information extraction unit 24 notifies the subscriber information registration unit 27 of the connection information of the subscriber C200C (S304). The subscriber information registration unit 27 registers the connection information of the subscriber C200C in the subscriber information table 26 (S305).

As described above, even when the subscriber changes, the subscriber information registration unit 27 can reflect the change of the subscriber in the subscriber information table 26 by the REGISTER signal, so that the call between the new subscriber and the existing subscriber can be performed. The message sequence in establishment can be reduced.
The hardware configuration of the call control server device according to this embodiment includes a CPU, a memory, an input device, and a bus connecting the above-described units.

(Other embodiments of the present invention)
A call control server device according to another embodiment of the present invention will be described with reference to FIG. 9 with respect to a portion changed from the first embodiment.
FIG. 9 is a block diagram showing a configuration of a call control server device according to another embodiment of the present invention.

  In FIG. 1, the call control server device 10 according to the present embodiment is similar to the first embodiment in that a call request accepting means 1, a connection information obtaining means 2, a storage unit 3, subscriber information 3a, The registration means 4, the registration confirmation means 5, and the IP connection means 6 are provided. Further, the call control server device 10 includes a format analysis unit 8 instead of the change receiving unit 7 as a changed part from the first embodiment.

  Based on the call request accepting means 1, the format analysis means 8 extracts a subscriber identifier that is included in a call request from a subscriber and uniquely identifies the subscriber.

  Further, the overall configuration including the call control server device of the present embodiment is the same as the call control server device 10, the contractor PC 100, and the IP phone of the subscriber A as shown in FIG. 3 described in the first embodiment. A terminal 200A and a subscriber B's IP telephone terminal 200B are provided. Further, the call control server device 10 includes a WEB cascade 10a, a SIP server (ACT) 10b, and a SIP server (SBY) 10c, as in the first embodiment.

  In addition, the SIP server (ACT) 10b and the SIP server (SBY) 10c include a WEB cascon reception unit 21, a call processing request unit 22, and a SIP signal transmission / reception unit 23, as in the first embodiment. . The SIP server (ACT) 10b and the SIP server (SBY) 10c include a subscriber information extraction unit 24, a SIP signal generation unit 25, a subscriber information table 26, and a subscriber information registration unit 27.

  In this embodiment, the SIP signal transmission / reception unit 23 functions as the IP connection unit 6 and the format analysis unit 8 to transmit / receive a SIP signal to / from a subscriber, and based on the subscriber identifier, the subscriber Recognize changes in PC100.

  In the present embodiment, the subscriber information table 26 stores connection information of the IP telephone terminal 200A as the subscriber information 3a, and uses the subscriber address item as the subscriber identifier.

Hereinafter, the operation of the call control server device according to the present embodiment based on the above-described configuration will be described with respect to a portion changed from the first embodiment.
First, as shown in FIG. 8 described in the first embodiment, the call control server device 10 functions as the format analysis unit 8 in S302.

  In S302, the SIP signal transmitting / receiving unit 23 detects the IP address of the subscriber who is the transmission source of the received data. The call processing request unit 22 searches the subscriber information table 26 using the telephone number included in the data received from the WEB Cascon 10a as a key, and there is no telephone number registered in the subscriber information table 26. In this case, it is determined that there is no connection information of IP telephone terminal 200A. Further, the call processing request unit 22 searches the subscriber information table 26 using the detected IP address as a key, and if it exists in the subscriber information table 26, it indicates that the subscriber's terminal has been changed. This terminal change is reflected in the subscriber information table 26.

  As described above, since the change of the subscriber PC is recognized by the subscriber identifier, it is not necessary to transmit / receive a signal that is not directly related to the call call connection related to the terminal change, thereby reducing communication load while ensuring communication quality. be able to.

  In the above embodiment, the subscriber address item of the subscriber information table 26 is used for the subscriber identifier. However, the present invention is not limited to this form, and for example, the MAC address of the contractor PC 100 can be used. is there. This MAC address can be added to the subscriber information table 26 and held and used as a MAC address item. Since the MAC address can uniquely identify the terminal, the terminal change can be recognized accurately, and the terminal change can be easily and accurately performed.

[Appendix] The following appendices are further disclosed with respect to the embodiment including the above examples.
(Supplementary Note 1) In a call control server device for establishing a call between a calling party and a called party by call control, a call request receiving means for receiving a call request from a subscriber, and the call request receiving means Connection information obtaining means for inquiring and obtaining connection information relating to the subscriber from the subscriber, registration means for registering subscriber information relating to connection information of each subscriber obtained by the connection information obtaining means, and the call Registration confirmation means for confirming whether the connection information of the calling party who has accepted the call request by the request acceptance means is registered in the registration means; and the calling party and the incoming call based on the connection information A connection means for connecting the subscriber on the side, the connection information acquisition means based on the registration confirmation means, if the connection information of the calling subscriber is already registered in the subscriber information, Said climb Call control server device that connects the called party subscriber based on the connection information.

(Additional remark 2) It is provided with the change reception means which receives the change of the subscriber, and the registration means, when the subscriber is changed based on the change reception means, the subscription of the subscriber before the change The call control server device according to supplementary note 1, wherein subscriber information is registered as the subscriber information of the subscriber after the change.

(Additional remark 3) It is provided with the format analysis means which extracts the subscriber identifier which is the subscriber identifier contained in the said call request from the said subscriber uniquely and identifies the said subscriber based on the said call request reception means When the subscriber is changed based on the subscriber identifier extracted by the format analysis unit, the registration unit changes the subscriber information of the subscriber before the change to the subscriber information after the change. The call control server device according to appendix 1, which is registered as the subscriber information of a subscriber.

(Supplementary Note 4) In a call control server method for establishing a call between a calling party and a called party by call control, a call request receiving process for receiving a call request from a subscriber, and a call request receiving process A connection information obtaining step for inquiring and obtaining connection information relating to the subscriber, a registration step for registering subscriber information relating to connection information of each subscriber obtained in the connection information obtaining step, and the call A registration confirmation step of confirming whether the connection information of the calling party who has accepted the call request in the request reception step is registered in the registration step, and the calling side and the incoming call based on the connection information A connection step of connecting the subscriber on the side, and a connection information acquisition step based on the registration confirmation step, when the connection information of the calling subscriber is already registered in the subscriber information, Said climb Call control server control method of connecting the called party subscriber based on the connection information.

(Additional remark 5) It has the change reception process which receives the change of the said subscriber, and the said registration process WHEREIN: When the said subscriber is changed based on the said change reception process, the said subscription of the said subscriber before a change The call control server control method according to appendix 4, wherein the subscriber information is registered as the subscriber information of the subscriber after the change.

(Additional remark 6) It is provided with the format analysis process which extracts the subscriber identifier which is the subscriber identifier contained in the said call request from the said subscriber uniquely and identifies the said subscriber based on the said call request reception process When the subscriber is changed based on the subscriber identifier extracted in the format analysis step, the registration step changes the subscriber information of the subscriber before the change to the changed subscriber information. The call control server control method according to appendix 4, wherein the call control server is registered as the subscriber information of a subscriber.

(Supplementary note 7) In a call control server program for establishing a call between a calling party and a called party by call control, a call request receiving means for receiving a call request from a subscriber, based on the call request receiving means, Connection information acquisition means for inquiring and acquiring connection information related to the subscriber, registration means for registering subscriber information related to connection information of each subscriber acquired by the connection information acquisition means, and call request reception means Registration confirmation means for confirming whether or not the connection information of the calling party who has accepted the call request is registered in the registration means, and the calling and called subscribers based on the connection information The computer functions as a connection means for connecting the connection information, and the connection information acquisition means has registered the connection information of the calling subscriber in the subscriber information based on the registration confirmation means. If the call control server program to connect with the called subscriber on the basis of the registered connection information.

(Supplementary note 8) When the change of the subscriber is made to function as a change acceptance means for accepting the change of the subscriber, and the registration means is changed based on the change acceptance means, the subscriber before the change The call control server program according to appendix 7, wherein the subscriber information is registered as the subscriber information of the subscriber after the change.

(Additional remark 9) Based on the said call request reception means, a computer as a format analysis means which extracts the subscriber identifier which is contained in the said call request from the said subscriber and uniquely identifies the said subscriber When the subscriber is changed based on the subscriber identifier extracted by the format analysis unit, the registration unit changes the subscriber information of the subscriber before the change. The call control server program according to appendix 7, which is registered as the subscriber information of the subsequent subscriber.

DESCRIPTION OF SYMBOLS 1 Call request reception means 2 Connection information acquisition means 3 Memory | storage part 3a Subscriber information 4 Registration means 5 Registration confirmation means 6 IP connection means 7 Change reception means 8 Format analysis means 10 Call control server apparatus 10a WEB Cascon 10b SIP server (ACT)
10c SIP server (SBY)
21 WEB Cascon Reception Unit 22 Call Processing Request Unit 23 SIP Signal Transmission / Reception Unit 24 Subscriber Information Extraction Unit 25 SIP Signal Generation Unit 26 Subscriber Information Table 27 Subscriber Information Registration Unit 100 Contractor PC
100a Call request 100b Change request 200A IP telephone terminal (subscriber A)
200B IP phone terminal (subscriber B)

Claims (5)

In a call control server device that establishes a call between calling and called subscribers by call control,
A call request receiving means for receiving a call request from a subscriber;
Connection information acquisition means for inquiring and acquiring connection information related to the subscriber based on the call request reception means;
Registration means for registering subscriber information related to connection information of each subscriber acquired by the connection information acquisition means;
Registration confirmation means for confirming whether the connection information of the calling subscriber who accepted the call request by the call request acceptance means is registered in the registration means;
Connection means for connecting the calling and called subscribers based on the connection information;
If the connection information acquisition means has registered the connection information of the calling subscriber on the subscriber information based on the registration confirmation means, the call information on the called side is registered based on the registered connection information. A call control server that connects to subscribers.
The call control server device according to claim 1, wherein
Comprising a change acceptance means for accepting a change of the subscriber;
When the subscriber is changed based on the change accepting unit, the registration unit registers the subscriber information of the subscriber before the change as the subscriber information of the subscriber after the change. Call control server device.
The call control server device according to claim 1, wherein
Based on the call request receiving means, comprising a format analysis means for extracting a subscriber identifier that is uniquely included in the call request from the subscriber and uniquely identifies the subscriber;
When the subscriber is changed based on the subscriber identifier extracted by the format analyzing means, the registration means changes the subscriber information of the subscriber before the change to the subscription after the change. A call control server device that registers as the subscriber information of the subscriber.
In a call control server method for establishing a call between calling and called subscribers by call control,
A call request receiving process for receiving a call request from a subscriber;
Based on the call request reception step, a connection information acquisition step for inquiring and acquiring connection information related to the subscriber from the subscriber;
A registration step of registering subscriber information related to connection information of each subscriber acquired in the connection information acquisition step;
A registration confirmation step for confirming whether the connection information of the calling subscriber who accepted the call request in the call request acceptance step is registered in the registration step;
A connection step of connecting the calling and called subscribers based on the connection information,
If the connection information acquisition step is based on the registration confirmation step and the connection information of the calling subscriber is already registered in the subscriber information, Call control server control method to connect with the subscriber.
In a call control server program for establishing a call between calling and called subscribers by call control,
A call request accepting means for accepting a call request from a subscriber;
Connection information acquisition means for inquiring and acquiring connection information related to the subscriber based on the call request reception means;
Registration means for registering subscriber information related to connection information of each subscriber acquired by the connection information acquisition means;
Registration confirmation means for confirming whether the connection information of the calling subscriber who accepted the call request by the call request accepting means is registered in the registration means;
Causing the computer to function as connection means for connecting the calling and called subscribers based on the connection information;
If the connection information acquisition means has registered the connection information of the calling subscriber on the subscriber information based on the registration confirmation means, the call information on the called side is registered based on the registered connection information. A call control server program that connects to subscribers.

Images