JP5313992B2 - Call reservation control system, SIP server, call reservation control method, and call reservation control program - Google Patents

Description

  The present invention relates to a call reservation control system, a SIP server, a call reservation control method, and a call reservation control program for connecting a call. The present invention particularly relates to a call reservation control system, a SIP server, a call reservation control method, and a call reservation control program suitable for call connection using a SIP (Session Initiation Protocol) server.

  The SIP server performs call control using a protocol called SIP. The SIP protocol is a protocol used for converting voice communication to IP such as VoIP (Voice over Internet Protocol), and is used, for example, for Internet telephone.

  In general, when a telephone is used to make a call to a destination, if the telephone line is congested, the telephone cannot be connected immediately. The same applies when a call is made to the other party using the SIP protocol. When the maximum number of calls that can be controlled by the SIP server determined by the allowable bandwidth of the traffic trunk line is exceeded, the telephone is connected to the other party. I can't.

  In view of this, the related technology related to the present invention proposes a technology capable of reserving an additional bandwidth for a related traffic trunk line when the allowable bandwidth of the trunk line is exceeded (see, for example, Patent Document 1). .

JP 2008-211821 A (paragraphs 0015 and 0021)

  However, with this related technique, bandwidth reservation is performed in order to prevent a deterioration in QoS (Quality of Service) when time synchronization data is transmitted. Therefore, even if this related technology is used, it is not possible to take measures to ensure communication such as telephones when telephone lines are busy.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a call reservation control system, a SIP server, and a call reservation control method that perform reservation control of a session consisting of a flow from the start of communication to a disconnection request in accordance with the SIP protocol so that a call can be reliably connected. And providing a call reservation control program.

  In the present invention, (a) call number reservation accepting means for accepting the number of calls used for communication corresponding to a specific telephone number in correspondence with a communication time zone in which a user terminal is desired to be reserved, and this call number reservation accepting means (B) a call reservation system comprising an event notification means for notifying a specific destination of a call reservation event indicating the reservation number of calls reserved by (2), and (b) the call described above from the event notification means as the specific destination. Call reservation event receiving means for receiving a reservation event, and reservation of a call for the specific telephone number in the time zone received by the call reservation event receiving means is possible in relation to a predetermined number of reservable calls. Call reservation availability determination means for determining whether the call reservation is possible, and the number of calls determined to be call reservation possible by the call reservation availability determination means of the reserved call corresponding to the specific telephone number Corresponding when a call request reservation means for reservation as a number, a communication request reception means for receiving a communication request corresponding to a telephone number from the user terminal, and a communication request reception means for receiving the communication request Communication request availability determination means for determining whether the communication request described above is permitted in relation to the number of calls of the reserved call corresponding to the telephone number, and the communication request availability determination means enable the communication request described above. At this time, the call reservation control system includes a SIP (Session Initiation Protocol) server provided with call establishment means for securing a corresponding number of calls and establishing a call.

  In the present invention, (a) a call reservation event indicating call reservation reservation contents in which the number of calls used for communication corresponding to a specific telephone number is made to correspond to a communication time zone in which a user terminal wants to be reserved is received. And (b) determining whether or not a call reservation for the specific telephone number can be made in relation to a predetermined number of reservable calls in advance during the time period received by the event receiving means. And (c) the number of calls reserved as the number of reserved calls corresponding to the specific telephone number described above, (c) the number of calls determined by the call reservation enable / disable determining means to be reserved. Reservation means, (d) a communication request receiving means for receiving a communication request corresponding to a telephone number from the user terminal, and (e) applicable when the communication request receiving means receives a communication request. Before addressing a phone number A communication request availability determination means for determining whether the communication request described above is permitted in relation to the number of reserved call calls, and (f) a response when the communication request availability determination means permits the communication request described above. A SIP (Session Initiation Protocol) server includes call establishment means for securing a number of lines to be established and establishing a call.

  Further, in the present invention, (a) a call number reservation accepting step for accepting the number of calls used for communication corresponding to a specific telephone number as call number reservation accepting contents corresponding to a communication time zone desired to be reserved by the user terminal; (B) an event notification step for notifying a SIP (Session Initiation Protocol) server of a call reservation event indicating the call number reservation reception contents reserved in the call number reservation reception step; and (c) notified by the event notification step. A call reservation availability determination step for determining whether a call reservation for the specific telephone number described above is possible in relation to a predetermined number of reserved reservation calls; and (d) a call reservation availability determination step. A number-of-calls reservation step of reserving the number of calls determined to be call-reservable in step as the number of reserved calls corresponding to the specific telephone number, and (e) a user terminal A communication request receiving step for receiving a communication request corresponding to a telephone number; and (f) when the communication request receiving step receives a communication request, the reservation call corresponding to the corresponding telephone number is received. A communication request availability determination step for determining whether or not the communication request described above is permitted in relation to the number of calls; and (g) when the communication request availability determination step permits the communication request described above, The call reservation control method includes a call establishment step of securing a line and establishing a call.

  Furthermore, in the present invention, as a call reservation control program in a computer of a SIP (Session Initiation Protocol) server, (a) a communication time for which a user terminal is desired to reserve the number of calls used for communication corresponding to a specific telephone number. An event reception process for receiving a call reservation event indicating the number of call reservation reception contents corresponding to the band, and (b) a reservation for a call for the specific telephone number in the time zone received in the event reception process is determined in advance. The call reservation availability determination process for determining whether it is possible in relation to the predetermined number of calls that can be reserved, and (c) the number of calls that have been determined that the call reservation is possible in this call reservation availability determination process. Call number reservation processing for reserving the number of reserved calls corresponding to a specific telephone number; (d) Communication request reception processing for receiving a communication request corresponding to a telephone number from a user terminal; (E) When this communication request reception process receives a communication request, it is determined whether or not the communication request is permitted in accordance with the number of reserved calls corresponding to the corresponding telephone number. And (e) when the communication request availability determination process permits the communication request, a call establishment process for securing a corresponding number of calls and establishing a call is executed.

  As described above, in the present invention, a SIP session is reserved in advance using a SIP server as a server that performs call control using a protocol called SIP. Connection can be made. In addition, since the existing SIP system is expanded, the system can be easily constructed.

It is a claim correspondence diagram of the call reservation control system of the present invention. It is a claim correspondence diagram of the SIP server of the present invention. It is a claim corresponding | compatible figure of the call reservation control method of this invention. It is a claim correspondence diagram of the call reservation control program of the present invention. 1 is a system configuration diagram showing a call connection system in an embodiment of the present invention. It is a block diagram showing the outline | summary of the structure of the call reservation system in this Embodiment. It is explanatory drawing which represented in principle the control of the call control number in the call control number control system of this Embodiment. It is explanatory drawing which showed an example of the call number management table in this Embodiment. It is a flowchart showing the mode of the call reservation event process by the SIP server in this Embodiment. It is a flowchart showing the mode of processing of the SIP server at the time of receiving / receiving a call request in this embodiment.

  FIG. 1 is a diagram corresponding to claims of the call reservation control system of the present invention. The call reservation control system 10 of the present invention includes a call reservation system 11 and a SIP server 12. Here, the call reservation system 11 includes a call number reservation accepting unit 11a that accepts the number of calls used for communication corresponding to a specific telephone number in correspondence with a communication time zone in which a user terminal is desired to be reserved, and the number of calls. And an event notification unit 11b for notifying a specific destination of a call reservation event indicating the content of the reservation for the number of calls reserved by the reservation receiving unit 11a. The SIP server 12 includes a call reservation event receiving unit 12a, a call reservation determination unit 12b, a call number reservation unit 12c, a communication request reception unit 12d, a communication request determination unit 12e, and a call establishment unit 12f. Yes. Here, the call reservation event receiving unit 12a receives the call reservation event from the event notification unit 11b as the specific destination. The call reservation availability determination unit 12b determines whether a call reservation for the specific telephone number can be made in relation to a predetermined number of calls that can be reserved in the time period received by the call reservation event reception unit 12a. Determine. The call number reservation means 12c reserves the number of calls determined by the call reservation availability determination means 12b as the number of reserved calls corresponding to the specific telephone number. The communication request receiving unit 12d receives a communication request corresponding to the telephone number from the user terminal. When the communication request receiving unit 12d receives a communication request, the communication request availability determining unit 12e determines whether to allow the communication request in relation to the number of calls of the reserved call corresponding to the corresponding telephone number. To do. The call establishment unit 12f establishes a call by securing a corresponding number of calls when the communication request availability determination unit 12e allows the communication request.

  FIG. 2 shows a claim correspondence diagram of the SIP server of the present invention. The SIP server 20 of the present invention includes an event receiving unit 21, a call reservation availability determining unit 22, a call number reservation unit 23, a communication request receiving unit 24, a communication request availability determining unit 25, and a call establishing unit 26. ing. Here, the event receiving means 21 receives a call reservation event indicating call number reservation acceptance contents in which the number of calls used for communication corresponding to a specific telephone number is associated with the communication time zone in which the user terminal desires reservation. To do. The call reservation availability determination means 22 determines whether or not a call reservation for the specific telephone number described above is possible in relation to a predetermined number of calls that can be reserved in the time period received by the event reception means 21. . The call number reservation unit 23 reserves the number of calls determined by the call reservation availability determination unit 22 as being available for reservation as the number of reserved calls corresponding to the specific telephone number. The communication request receiving unit 24 receives a communication request corresponding to the telephone number from the user terminal. The communication request availability determining means 25 determines whether or not to allow the communication request in relation to the number of reserved calls corresponding to the corresponding telephone number when the communication request receiving means 24 receives the communication request. To do. The call establishment means 26 establishes a call by securing a corresponding number of calls when the communication request availability determination means 25 permits the communication request described above.

  FIG. 3 is a diagram corresponding to the claims of the call reservation control method of the present invention. The call reservation control method 30 according to the present invention includes a call number reservation reception step 31, an event notification step 32, a call reservation availability determination step 33, a call number reservation step 34, a communication request reception step 35, and a communication request availability determination. Step 36 and call establishment step 37 are provided. Here, in the call number reservation reception step 31, the number of calls used for communication corresponding to a specific telephone number is received as call number reservation reception contents corresponding to the communication time zone reserved by the user terminal. In the event notification step 32, the SIP server is notified of a call reservation event indicating the call number reservation reception contents reserved in the call number reservation reception step 31. In call reservation availability determination step 33, it is determined whether or not a call reservation for the specific telephone number can be made in the time period notified in event notification step 32 in relation to a predetermined number of calls that can be reserved. To do. In the call number reservation step 34, the number of calls determined in the call reservation availability determination step 33 as being available for reservation is reserved as the number of reserved calls corresponding to the specific telephone number. In the communication request receiving step 35, when a communication request corresponding to the telephone number is received from the user terminal, it is received. In the communication request availability determination step 36, when the communication request is received in the communication request reception step 35, it is determined whether the communication request described above is permitted in relation to the number of calls of the reserved call corresponding to the corresponding telephone number. To do. In the call establishment step 37, when the above-described communication request is permitted in the communication request availability determination step 36, a call is established by securing a corresponding number of calls.

  FIG. 4 is a diagram corresponding to claims in the call reservation control program of the present invention. The call reservation control program 40 of the present invention includes an event reception process 41, a call reservation availability determination process 42, a call number reservation process 43, a communication request reception process 44, and a communication request availability determination process 45 in the computer of the SIP server. The call establishment process 46 is executed. Here, in the event reception processing 41, a call reservation event indicating the call number reservation acceptance content corresponding to the communication time zone in which the number of calls used for communication corresponding to a specific telephone number is desired to be reserved by the user terminal is received. To do. In the call reservation availability determination process 42, it is determined whether or not a call reservation for the specific telephone number can be made in the time period received by the event reception process 41 in relation to a predetermined number of calls that can be reserved. . In the call number reservation processing 43, the number of calls determined to be available for call reservation in the call reservation availability determination processing 42 is reserved as the number of reserved calls corresponding to the specific telephone number. In the communication request reception process 44, when there is a communication request corresponding to the telephone number from the user terminal, it is received. In the communication request availability determination processing 45, when the communication request is received in the communication request reception processing 44, it is determined whether or not the communication request described above is permitted in relation to the number of calls of the reserved call corresponding to the corresponding telephone number. To do. In the call establishment process 46, when the communication request availability determination process 45 permits the communication request described above, the call establishment process 46 establishes a call by securing a corresponding number of calls.

  <Embodiment of the Invention>

  Next, an embodiment of the present invention will be described.

  FIG. 5 shows a call connection system in the embodiment of the present invention. The call reservation control system 100 includes a call reservation system 101, a SIP server 102, and a communication path 103 that connects them. Here, the call reservation system 101 monitors the reservation event of the SIP session for the telephone number. As a specific reservation event monitoring method by the call reservation system 101, for example, a reservation event is monitored by using a tone signal by DTMF (Dial Tone Multi Frequency) in a media server (not shown), or a reservation event by a web server (not shown). There can be monitoring.

  The SIP server 102 is obtained by mounting application software for a SIP server on a general-purpose server. The SIP server 102 according to the present embodiment is functionally composed of a SIP server telephone number information data unit 111 and a call control number control system 112.

  Among these, the SIP server telephone number information data unit 111 is based on a combination of data of the telephone number 121 used for making / receiving calls, the number of normal call calls 122, the number of reserved call calls 123, and the number of reserved call calls 124. This is a memory area for storing the SIP server telephone number information data 125. Here, the “number of calls” refers to the number of times a telephone call is made per unit time (1 hour). The number of reserved calls 124 refers to the number of SIP sessions that have actually reserved a target telephone number. The reserved call number 123 is the number of SIP sessions that are actually making a call out of the reserved call numbers 124. The memory area for storing the SIP server telephone number information data 125 is obtained by appropriately assigning a memory (not shown) constituting the SIP server 102.

  The call control number control system 112 has the SIP server 102 functionally executed by a CPU (Central Processing Unit) (not shown) executing a control program stored in another area of the memory storing the SIP server telephone number information data unit 111. It has come to be realized. In the call control number control system 112, a call number management table 126 using a partial area of the memory is arranged. The call number management table 126 stores call number management information for managing the number of calls.

  FIG. 6 shows an outline of the configuration of the call reservation system. This will be described with reference to FIG.

  The call reservation system 101 includes a call reservation information data unit 141 and a call reservation system control unit 142 that controls the call reservation information data unit 141. The call reservation information data unit 141 is a memory area for storing call reservation information data 154 composed of a combination of data of telephone number information 151, reservation time information 152, and reserved call number information 153. In this memory area, a memory (not shown) constituting the call reservation system 101 is appropriately allocated. The call reservation system control unit 142 includes a CPU (not shown), and implements the call reservation system 101 in software by executing a control program stored in another area of the memory storing the call reservation information data unit 141. It is like that.

  In the call reservation control system 100 configured as described above, the call reservation system 101 acquires an event regarding call reservation. Based on this, the call reservation system 101 checks each data of the telephone number information 151, the reservation time information 152, and the reserved call number information 153 to determine whether the call can be reserved. Specifically, there is a telephone number that is a call target indicated by the telephone number information 151, a reservation can be made at the reservation time indicated by the reservation time information 152, and the number of calls that can be reserved is indicated by the reserved call number information 153. When it is determined that it is within the range, a call can be reserved.

  When the call reservation system 101 determines that the call reservation is possible, the call reservation system 101 concatenates the combination of the three types of information 151 to 153 as the call reservation information data 154 and stores it in the call reservation information data unit 141. When the reservation time indicated by the reservation time information 152 arrives, a reservation event is notified to the SIP server 102 through the communication path 103, assuming that the execution start time of the call reservation information data 154 has come.

  On the other hand, the call control number control system 112 in the SIP server 102 waits for an event regarding the call reservation information data 154 stored in the call reservation information data unit 141 from the call reservation system 101. When the event is received, the call reservation system control unit 142 updates the telephone number 121 and the reserved call number 124 in the SIP server telephone number information data 125 being managed from the call reservation information data 154.

  FIG. 7 shows in principle the control of the number of call controls in the call reservation control system. This will be described with reference to FIGS.

  The maximum controllable number of calls that can be controlled by the SIP server 102 is represented by a numerical value n. Considering a case where a call is made to a specific telephone number, this telephone number is assumed to be telephone number A. In this case, the maximum controllable number of calls n is equal to the number of lines for the telephone number A.

  In the present embodiment, the maximum controllable number of calls n is divided into a reservation call control number a and a normal call control number (na). When the SIP server 102 receives a call reservation event from the call reservation system 101, if the call reservation target telephone number A already holds a call, the call is the normal call control number. Managed as (na). Calls that occur within the reserved time are managed as the reserved call control number a.

  A threshold value that is a boundary between the reserved call control number a and the normal call control number (na) is referred to as a call number threshold Th. Further, the maximum number of calls that can be reserved as the maximum number of calls that can be reserved is represented by a numerical value m.

  In the call control number control system 112 of this embodiment, when the SIP server 102 receives the event of the call reservation information data 154 from the call reservation system 101, the call number threshold Th is determined from the reserved call number information 153, and the maximum control is performed. The number of possible calls n is divided into a normal call control number (na) and a reservation call control number a. The reservation call control number a is a call line reserved for the telephone number information 151 to be reserved. The call reservation system 101 changes the maximum number m of calls that can be reserved depending on the call reservation status.

  FIG. 8 shows transition of call management information for an example of the call number management table. The number-of-calls management table 126 manages the number of calls during a call, the number of calls that can be called, and the number of calls that can be newly reserved in units of time. In the call number management table 126 shown in FIG. 8, call number management information for the telephone number A is stored. This will be described with reference to FIG.

It is assumed that the number of normal calls during a call at 8:00 is NT and the number of reserved calls is RT. In addition, it is assumed that the number of normal calls that can be talked at 8:00 is NI and the number of reserved calls is RI. The maximum controllable number of calls n is expressed by the following equation (1).
n = NT + RT + NI + RI (1)

  Accordingly, the number of calls that can be newly reserved at the time of 8 o'clock is a value obtained by subtracting the sum (RT + RI) of the reserved call that is being talked and the reserved call that can be talked to from the maximum number of calls that can be reserved m.

  Let r be the number of reserved calls for telephone number A. Also, let rt be the number of telephone calls after the reservation for telephone number A, where the telephone conversation starts at 9 o'clock and continues at 12 o'clock. It is assumed that the reservation for the telephone number A starts at 9:00 and the reservation expires at 12:00, and the normal call during a call at 9:00 remains NT. In this case, the number of reserved calls during a call increases by the number of calls rt to RT + rt. As a result, the number of normal calls that can be communicated is reduced by the number r of reserved calls for the telephone number A to become NI-r. In addition, the number of reserved calls that can be communicated is NI + r−rt.

  At 12 o'clock, since the number of telephone calls after reservation for the telephone number A is rt, the normal call is added to the normal call NT during the call at the time when the reservation expires and becomes NT + rt. The number of reservation calls during a call is reduced to RT-rt by the number of reservation expiration calls rt. The number of normal calls and reserved calls that can be communicated at 12 o'clock returns to the respective values at 8 o'clock. As a result, the number of calls that can be newly reserved at 12:00 is the same as the number of calls at 8:00.

  FIG. 9 shows a state of call reservation event processing by the SIP server. This will be described with reference to FIGS.

  The SIP server 102 waits for a call reservation event to be sent from the call reservation system 101 (step S201). The call reservation system 101 monitors the reservation time information 152 in the call reservation information data 154 stored in the call reservation information data unit 141, and notifies the SIP server 102 of an event when the reservation time is reached. Yes.

  When a call reservation event is received from the call reservation system 101 (step S201: Y), the SIP server 102 determines whether the call reservation event is a call reservation start or a call reservation end (step S202). If the call reservation starts (Y), it is determined whether the reservation is possible (step S203). If there is a vacancy in the number of reserved calls 124 at the time designated for the reservation, the reservation can be made. In addition, if it is within the range of the maximum reservable call number m, it is possible to reserve the number of newly reservable calls. If the reservation is possible, the SIP server telephone number information data 125 is updated to the contents (step S204). Even when it is determined in step S202 that call reservation is complete (N), the SIP server telephone number information data 125 is updated to the content (step S204).

  After updating the SIP server telephone number information data 125, the SIP server 102 changes the call threshold value Th to determine the normal call control number (na) and the reservation call control number a (step S205). The process returns to step S201 (return). When it is determined in step S203 that call reservation is impossible (N), the process returns to step S201 (return).

  As shown in FIG. 8, when the telephone number targeted for call reservation has already held a call, the call is managed as a normal call control number (na) and occurs within the reservation time. The call is managed as the reservation call control number a.

  FIG. 10 shows a state of processing of the SIP server at the time of receiving / receiving a call request. This will be described with reference to FIGS.

  The SIP server 102 waits for an incoming / outgoing request (INVITE message) from a user terminal such as an IP (Internet Protocol) telephone (not shown) (step S221). If there is a request for outgoing / incoming calls from the user terminal (Y), it is checked whether there is a reserved call at the telephone number that is the target of outgoing / incoming calls (step S222).

  If there is a reserved call (step S222: Y), the SIP server 102 determines from the reserved call count 124 and the reserved call call count 123 whether the outgoing / incoming call processing is possible within the reserved call count (step S223). For example, the telephone number A that is the target of outgoing / incoming calls actually reserves based on the relationship between the number of SIP sessions that are actually reserved and the number of SIP sessions that are actually talking among the reserved calls. It is determined whether outgoing / incoming calls are possible within the number of SIP sessions. In the case of a company having a user support center, the number of lines used in a specific period may be kept in the form of the number of reserved calls. If it is determined that calls can be made, calls can be made within this range. It becomes possible.

  If it is determined from the determination result of step S223 that processing can be performed within the number of reserved calls (Y), the SIP server 102 permits call origination / incoming using the reservation call control number a shown in FIG. S224). That is, a control line is secured from the reservation call control number a, and a call for outgoing / incoming request is established. Thereafter, the SIP server 102 returns to the process of step S221 that waits for a next call request from the user terminal (return).

  On the other hand, when it is determined that processing is not possible within the number of reserved calls (step S223: N), or when the number of reserved calls does not exist (step S222: N), the SIP server 102 determines the normal call control number. It is determined whether the process is possible at (na) (step S225). If the process can be performed with the normal call control number (na) (Y), the SIP server 102 permits the outgoing / incoming call using the normal call control number (na) (step). S226). That is, from the normal call control number (na), or if necessary, the number of reservation call control numbers can be added, if necessary, to secure a control line and establish a call for outgoing / incoming requests. To do. Then, the SIP server 102 returns to the process of step S221 that waits for the next request for outgoing / incoming calls (return).

  If the processing is impossible even if the normal call control number (na) is used (step S225: N), the SIP server 102 rejects the request for outgoing / incoming calls from the user terminal (step S227). Then, the process returns to the process of step S221 for waiting for the next outgoing / incoming request (return).

  As described above, according to the present embodiment, it is possible to reliably connect a call by realizing a system that reserves a SIP session in advance.

  In the present embodiment, SIP sessions can be reserved in units of time. In this case, the number of SIP session control calls is determined fluidly in units of time, and the line can be used efficiently.

  Furthermore, according to the present embodiment, it is possible to easily construct a system by expanding an existing SIP system, and secure a reliable telephone connection. In addition, since the SIP system is used, the compatibility with the Internet is high.

  <Deformability of invention>

  In the embodiment described above, call reservation is controlled collectively for incoming and outgoing calls, but the present invention is not limited to this. By separately controlling the reservation for outgoing calls and the reservation for incoming calls, it is possible to construct a call reservation control system suitable for each usage mode.

  Further, in the embodiment, when it is determined in step S223 in FIG. 10 that processing cannot be performed within the number of reserved calls for a request for outgoing / incoming calls, the possibility of using the normal call control number is searched. However, it is not limited to this. If processing is impossible within the number of reserved calls, it is possible to set the number of reserved calls as the upper limit of the number of calls on the line by immediately proceeding to step S227 and rejecting the incoming and outgoing calls.

  Some or all of the embodiments described above are described as in the following supplementary notes, but are not limited to the following descriptions.

(Appendix 1)
Call number reservation accepting means for accepting the number of calls used for communication corresponding to a specific telephone number corresponding to the communication time zone in which the user terminal wants to be reserved, and call number reservation acceptance reserved by this call number reservation accepting means A call reservation system comprising event notification means for notifying a specific destination of a call reservation event indicating contents;
Call reservation event receiving means for receiving the call reservation event from the event notification means as the specific destination, and call reservation for the specific telephone number in a time zone received by the call reservation event receiving means is predetermined. Call reservation availability determination means for determining whether it is possible in relation to a predetermined number of calls that can be reserved, and the number of calls determined by the call reservation availability determination means as being call reservation possible to the specific telephone number Call number reservation means for reserving as the number of corresponding reserved calls, communication request receiving means for receiving a communication request corresponding to a telephone number from a user terminal, and communication request receiving means for receiving a communication request A communication request availability determination unit that determines whether the communication request is permitted in relation to the number of calls of the reserved call corresponding to the corresponding telephone number, and the communication request availability determination unit; A call reservation control system comprising a SIP (Session Initiation Protocol) server provided with call establishment means for securing a corresponding number of calls and establishing a call when the communication request is permitted .

(Appendix 2)
The call reservation control according to claim 1, wherein the SIP server comprises communication rejection means for rejecting communication on a corresponding number of calls when the communication request availability determination means disables the communication request. system.

(Appendix 3)
The call reservation according to claim 1, wherein the communication request availability determination unit allows the communication request when the number of calls of the reserved call is equal to or greater than the number of calls of the communication request received by the communication request receiving unit. Control system.

(Appendix 4)
The communication request availability determination means includes communication rejection means for rejecting communication of the corresponding number of calls when the number of reserved calls is less than the number of communication requests received by the communication request receiving means. The call reservation control system according to supplementary note 1, wherein:

(Appendix 5)
The communication request availability determination means, from the number of calls allocated for normal calls other than the reserved call, when the number of calls of the reserved call is less than the number of calls of the communication request received by the communication request receiving means Supplementary note 1 wherein the communication request is permitted when the remaining call number obtained by subtracting the number of calls in a call is added to the reserved call number to satisfy the communication request corresponding to the corresponding telephone number. The call reservation control system described.

(Appendix 6)
The call reservation control system according to supplementary note 1, wherein the communication is communication between user terminals by outgoing call or incoming call.

(Appendix 7)
The maximum number of reserved calls corresponding to the specific telephone number accepted by the call number reservation accepting means is ensured for normal communication from the maximum controllable number of calls assigned to communication corresponding to the specific telephone number. The call reservation control system according to appendix 1, wherein the call reservation control system is a value obtained by subtracting a minimum number of calls to be made.

(Appendix 8)
The number of calls reserved by the call number reservation means is a value obtained by subtracting the number of calls of this normal call when there is a normal call that is not based on the reservation during communication corresponding to the telephone number at the user terminal at the time of reservation. The call reservation control system according to supplementary note 1, wherein:

(Appendix 9)
The predetermined reservable call number is a maximum reservable call number excluding a minimum allocation of a normal call control call number in a maximum controllable call number for the specific telephone number, and the call reservation The call reservation control system according to claim 1, wherein the availability determination unit determines that the call reservation is possible when the call reservation is performed within the maximum number of calls that can be reserved.

(Appendix 10)
An event receiving means for receiving a call reservation event indicating a call number reservation accepting content corresponding to a communication time zone in which a user terminal wants to make a reservation, the number of calls used for communication corresponding to a specific telephone number;
Call reservation availability determination means for determining whether a call reservation for the specific telephone number can be made in relation to a predetermined number of reservable calls determined in advance in a time zone received by the event reception means;
Call number reservation means for reserving the number of calls determined as call reservation possible by this call reservation availability determination means as the number of calls of reserved calls corresponding to the specific telephone number;
A communication request receiving means for receiving a communication request corresponding to a telephone number from a user terminal;
When this communication request receiving means receives a communication request, a communication request availability determination means for determining whether to allow the communication request in relation to the number of calls of the reserved call corresponding to the corresponding telephone number;
A SIP (Session Initiation Protocol) server, comprising: call establishment means for establishing a call by securing a corresponding number of calls when the communication request availability determination means permits the communication request.

(Appendix 11)
11. The SIP server according to claim 10, further comprising: a communication rejection unit that rejects communication of a corresponding number of calls when the communication request availability determination unit disables the communication request.

(Appendix 12)
A call number reservation accepting step for accepting the number of calls used for communication corresponding to a specific telephone number as a call number reservation accepting content corresponding to a communication time zone desired to be reserved by the user terminal;
An event notification step of notifying a SIP (Session Initiation Protocol) server of a call reservation event indicating call number reservation reception contents reserved in the call number reservation reception step;
A call reservation availability determination step for determining whether a call reservation for the specific telephone number can be made in relation to a predetermined number of reservable calls determined in advance in the time period notified in the event notification step;
A number-of-calls reservation step for reserving the number of calls determined in the call reservation availability determination step as a number of reserved calls corresponding to the specific telephone number;
A communication request receiving step for receiving a communication request corresponding to a telephone number from a user terminal;
When receiving a communication request in this communication request receiving step, a communication request availability determination step for determining whether to allow the communication request in relation to the number of calls of the reserved call corresponding to the corresponding telephone number;
A call reservation control method comprising: a call establishment step of establishing a call by securing a corresponding number of calls when the communication request is permitted in the communication request availability determination step.

(Appendix 13)
13. The call reservation control method according to claim 12, further comprising a communication rejection step of rejecting communication of the corresponding number of calls when the communication request is disabled in the communication request availability determination step.

(Appendix 14)
In the computer of the SIP (Session Initiation Protocol) server,
An event reception process for receiving a call reservation event indicating a call number reservation reception content corresponding to a communication time zone in which a user terminal wants to make a reservation, the number of calls used for communication corresponding to a specific telephone number;
Call reservation availability determination processing for determining whether or not reservation of a call for the specific telephone number is possible in relation to a predetermined number of reservable calls in a time zone received by the event reception processing;
Call number reservation processing for reserving the number of calls determined to be call reservation possible in this call reservation availability determination processing as the number of reserved calls corresponding to the specific telephone number;
A communication request reception process for receiving a communication request corresponding to a telephone number from a user terminal;
When a communication request is received in this communication request reception process, a communication request availability determination process for determining whether to allow the communication request in relation to the number of calls of the reserved call corresponding to the corresponding telephone number;
A call reservation control program for executing a call establishment process for securing a corresponding number of calls and establishing a call when the communication request is permitted in the communication request availability determination process.

(Appendix 15)
15. The call reservation control program according to claim 14, further causing the computer to further execute a communication rejection process for rejecting communication on a corresponding number of calls when the communication request is disabled in the communication request availability determination process. .

10, 100 Call reservation control system 11, 101 Call reservation system 11a Call number reservation reception means 11b Event notification means 12, 20 SIP server 12a Call reservation event reception means 12b, 22 Call reservation availability determination means 12c, 23 Call number reservation means 12d , 24 Communication request reception means 12e, 25 Communication request availability determination means 12f, 26 Call establishment means 21 Event reception means 30 Call reservation control method 31 Call number reservation reception step 32 Event notification step 33 Call reservation availability determination step 34 Call number reservation step 35 Communication request reception step 36 Communication request availability determination step 37 Call establishment step 40 Call reservation control program 41 Event reception processing 42 Call reservation availability determination processing 43 Call number reservation processing 44 Communication request reception processing 45 Communication request availability determination processing 46 Call establishment processing 1 2 SIP server 111 SIP server telephone number information data part 112 Call control number control system 121 Telephone number 122 Number of normal call calls 123 Number of reserved call calls 124 Number of reserved calls 125 SIP server telephone number information data 126 Call number management table 141 Call reservation information Data part 142 Call reservation system control part 151 Telephone number information 152 Reservation time information 153 Reserved call number information 154 Call reservation information data

Claims (11)

Call number reservation accepting means for accepting the number of calls used for communication corresponding to a specific telephone number corresponding to the communication time zone in which the user terminal wants to be reserved, and call number reservation acceptance reserved by this call number reservation accepting means A call reservation system comprising event notification means for notifying a specific destination of a call reservation event indicating contents;
Call reservation event receiving means for receiving the call reservation event from the event notification means as the specific destination, and call reservation for the specific telephone number in a time zone received by the call reservation event receiving means is predetermined. Call reservation availability determination means for determining whether it is possible in relation to a predetermined number of calls that can be reserved, and the number of calls determined by the call reservation availability determination means as being call reservation possible to the specific telephone number Call number reservation means for reserving as the number of corresponding reserved calls, communication request receiving means for receiving a communication request corresponding to a telephone number from a user terminal, and communication request receiving means for receiving a communication request A communication request availability determination unit that determines whether the communication request is permitted in relation to the number of calls of the reserved call corresponding to the corresponding telephone number, and the communication request availability determination unit; When the variable a serial communication request, and a SIP (Session Initiation Protocol) server having a call establishment means for establishing a call to ensure a corresponding number of calls of the line,
The predetermined reservable call number is a maximum reservable call number excluding a minimum allocation of a normal call control call number in a maximum controllable call number for the specific telephone number, and the call reservation The call reservation control system, wherein the availability determination means determines that a call can be reserved when a call is reserved within the maximum number of reservable calls. Call number reservation accepting means for accepting the number of calls used for communication corresponding to a specific telephone number corresponding to the communication time zone in which the user terminal wants to be reserved, and call number reservation acceptance reserved by this call number reservation accepting means A call reservation system comprising event notification means for notifying a specific destination of a call reservation event indicating contents;
Call reservation event receiving means for receiving the call reservation event from the event notification means as the specific destination, and call reservation for the specific telephone number in a time zone received by the call reservation event receiving means is predetermined. Call reservation availability determination means for determining whether it is possible in relation to a predetermined number of calls that can be reserved, and the number of calls determined by the call reservation availability determination means as being call reservation possible to the specific telephone number Call number reservation means for reserving as the number of corresponding reserved calls, communication request receiving means for receiving a communication request corresponding to a telephone number from a user terminal, and communication request receiving means for receiving a communication request A communication request availability determination unit that determines whether the communication request is permitted in relation to the number of calls of the reserved call corresponding to the corresponding telephone number, and the communication request availability determination unit; When the variable a serial communication request, and a SIP (Session Initiation Protocol) server having a call establishment means for establishing a call to ensure a corresponding number of calls of the line,
The maximum number of reserved calls corresponding to the specific telephone number accepted by the call number reservation accepting means is ensured for normal communication from the maximum controllable number of calls assigned to communication corresponding to the specific telephone number. Minus the minimum number of calls made
A call reservation control system. The SIP server when the communication request permission determining means and disables the communication request, corresponding according to claim 1 or 2, characterized by comprising a communication rejection means rejecting the communication line number of calls Call reservation control system. 3. The communication request enable / disable determining unit allows the communication request when the number of calls of the reserved call is equal to or more than the number of calls of the communication request received by the communication request receiving unit. Call reservation control system. The communication request availability determination means includes communication rejection means for rejecting communication of the corresponding number of calls when the number of reserved calls is less than the number of communication requests received by the communication request receiving means. The call reservation control system according to claim 1 or 2, wherein The communication request availability determination means, from the number of calls allocated for normal calls other than the reserved call, when the number of calls of the reserved call is less than the number of calls of the communication request received by the communication request receiving means The communication request is allowed when a communication request corresponding to a corresponding telephone number is satisfied by adding a surplus number of calls after subtracting the number of calls in a call to the number of calls of the reserved call. The call reservation control system according to 1 or 2 .   The maximum number of reserved calls corresponding to the specific telephone number accepted by the call number reservation accepting means is ensured for normal communication from the maximum controllable number of calls assigned to communication corresponding to the specific telephone number. 2. The call reservation control system according to claim 1, wherein the call reservation control system is a value obtained by subtracting a minimum number of calls to be made. An event receiving means for receiving a call reservation event indicating a call number reservation accepting content corresponding to a communication time zone in which a user terminal wants to make a reservation, the number of calls used for communication corresponding to a specific telephone number;
Call reservation availability determination means for determining whether a call reservation for the specific telephone number can be made in relation to a predetermined number of reservable calls determined in advance in a time zone received by the event reception means;
Call number reservation means for reserving the number of calls determined as call reservation possible by this call reservation availability determination means as the number of calls of reserved calls corresponding to the specific telephone number;
A communication request receiving means for receiving a communication request corresponding to a telephone number from a user terminal;
When this communication request receiving means receives a communication request, a communication request availability determination means for determining whether to allow the communication request in relation to the number of calls of the reserved call corresponding to the corresponding telephone number;
When the communication request availability determination means permits the communication request, the communication request availability determination means comprises a call establishment means for securing a corresponding number of calls and establishing a call ,
The predetermined reservable call number is a maximum reservable call number excluding a minimum allocation of a normal call control call number in a maximum controllable call number for the specific telephone number, and the call reservation A SIP (Session Initiation Protocol) server, wherein the availability determination means determines that a call reservation is possible when a call reservation is made within the maximum number of reservable calls . A call number reservation accepting step for accepting the number of calls used for communication corresponding to a specific telephone number as a call number reservation accepting content corresponding to a communication time zone desired to be reserved by the user terminal;
An event notification step of notifying a SIP (Session Initiation Protocol) server of a call reservation event indicating call number reservation reception contents reserved in the call number reservation reception step;
Call reservation for the specific telephone number in the time period notified in the event notification step excludes the minimum allocation of the normal number of call control calls among the maximum controllable calls for the specific telephone number. A call reservation availability determination step for determining that a call reservation is possible when it is performed within the maximum number of calls that can be reserved;
A number-of-calls reservation step for reserving the number of calls determined in the call reservation availability determination step as a number of reserved calls corresponding to the specific telephone number;
A communication request receiving step for receiving a communication request corresponding to a telephone number from a user terminal;
When receiving a communication request in this communication request receiving step, a communication request availability determination step for determining whether to allow the communication request in relation to the number of calls of the reserved call corresponding to the corresponding telephone number;
A call reservation control method comprising: a call establishment step of establishing a call by securing a corresponding number of calls when the communication request is permitted in the communication request availability determination step. A call number reservation accepting step for accepting the number of calls used for communication corresponding to a specific telephone number as a call number reservation accepting content corresponding to a communication time zone desired to be reserved by the user terminal;
An event notification step of notifying a SIP (Session Initiation Protocol) server of a call reservation event indicating call number reservation reception contents reserved in the call number reservation reception step;
A call reservation availability determination step for determining whether a call reservation for the specific telephone number can be made in relation to a predetermined number of reservable calls determined in advance in the time period notified in the event notification step;
A number-of-calls reservation step for reserving the number of calls determined in the call reservation availability determination step as a number of reserved calls corresponding to the specific telephone number;
A communication request receiving step for receiving a communication request corresponding to a telephone number from a user terminal;
When receiving a communication request in this communication request receiving step, a communication request availability determination step for determining whether to allow the communication request in relation to the number of calls of the reserved call corresponding to the corresponding telephone number;
A call establishment step for establishing a call by securing a corresponding number of lines when the communication request is permitted in the communication request availability determination step.
And
The maximum number of reserved calls corresponding to the specific telephone number accepted in the call number reservation accepting step is secured for normal communication from the maximum controllable number of calls assigned to communication corresponding to the specific telephone number. Minus the minimum number of calls made
A call reservation control method. In the computer of the SIP (Session Initiation Protocol) server,
An event reception process for receiving a call reservation event indicating a call number reservation reception content corresponding to a communication time zone in which a user terminal wants to make a reservation, the number of calls used for communication corresponding to a specific telephone number;
Call reservation for the specific telephone number in the time zone received by this event reception processing excludes the minimum allocation of the number of normal call control calls among the maximum controllable calls for the specific telephone number. A call reservation availability determination process for determining that a call reservation is possible when the call is made within the maximum number of reservable calls;
Call number reservation processing for reserving the number of calls determined to be call reservation possible in this call reservation availability determination processing as the number of reserved calls corresponding to the specific telephone number;
A communication request reception process for receiving a communication request corresponding to a telephone number from a user terminal;
When a communication request is received in this communication request reception process, a communication request availability determination process for determining whether to allow the communication request in relation to the number of calls of the reserved call corresponding to the corresponding telephone number;
A call reservation control program for executing a call establishment process for securing a corresponding number of calls and establishing a call when the communication request is permitted in the communication request availability determination process.

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