JP2007243727A - Proxy answering control method and integrated call control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a proxy answering control method and integrated call control system in which a user can pick up incoming calls, without being conscious of a call control system to which the call is to be terminated, by dialing the same special number between different call control systems. <P>SOLUTION: In a system in an embodiment 1 of the present implementation, when a termination call from a calling terminal 104 within a call control system A100 to a call control system A100 is to be picked up preferentially, call origination is performed to a call control system B200 via an inter-system gateway device 10 in which pick-up control is performed, if there is a termination call in the call control system A100, when a pickup special number is dialed from a pick terminal 102 within the call control system A100, but the call control system A100 and the call control system B200 will be interworked, if there is no termination call. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a proxy response control method and an integrated call control system, and more particularly to a proxy response control method and an integrated call control system for controlling a proxy response between different call control systems.

  Conventionally, there has been known a call control system in which call control devices for controlling incoming and outgoing calls to a plurality of telephones connected in the same group are connected. In such a call control system, a proxy response function that enables a proxy response by dialing a special number from another telephone in the same group without performing a response operation on the corresponding telephone while ringing due to an incoming call to a certain telephone Is set.

  As a system having such a proxy response function, for example, there is a gateway device and a communication system described in Patent Document 1. In this gateway device and communication system, it is possible to pick up an incoming call to a communication terminal corresponding to one communication protocol by a communication terminal corresponding to the other communication protocol by protocol conversion between networks of different communication protocols. Yes.

  In the proxy response control method of the IP telephone system described in Patent Document 2, in order to realize the proxy response in the SIP-based telephone system, a SIP server, a location server, a policy server, and a presence provided with a proxy response processing function A server is provided.

Further, Patent Document 3 describes a call pickup method in which a response priority order of pickup groups is set and call pickup is performed according to the priority order by the same special number operation.
Japanese Patent Laid-Open No. 2005-244772 JP 2004-242090 A JP 2002-118655 A

  However, in the gateway device and the communication system described in Patent Document 1, it is described as a pick-up method between communication terminals corresponding to different communication protocols, but the incoming call to the communication terminal corresponding to one communication protocol is the other. However, it does not describe a pickup method by protocol conversion between different call control systems.

  Further, the proxy response control method of the IP telephone system described in Patent Document 2 only describes a proxy response processing function corresponding to the SIP-based telephone system, and is based on protocol conversion between different call control systems. The pickup method is not described.

  Furthermore, the call pickup method described in Patent Document 3 only describes a method for picking up a call within a pickup group in which a response priority is set by a special number operation in the same call control system, and different calls. A pickup method by protocol conversion between control systems is not described.

  That is, in the communication systems and methods described in Patent Documents 1 to 3, the same special number is dialed between different call control systems, so that the user can pick up without being aware of which call control system the incoming call is. I can't do it.

  The present invention has been made in view of the above circumstances, and by dialing the same special number between different call control systems, the user picks up without being aware of which call control system the incoming call is. It is an object of the present invention to provide a proxy response control method and an integrated call control system that make it possible.

  The proxy response control method of the present invention includes a first call control system having a plurality of terminals and a call control device, and a second call control system connected to the first call control system via a gateway device. A proxy response control method in an integrated call control system comprising: when a proxy response operation is performed from a terminal in the first call control system, an incoming call in the first call control system is first searched. If there is an incoming call, a proxy response is made to the incoming call, and if there is no incoming call, the incoming call is searched for in the second call control system.

  According to the present invention, even when there is no incoming call in the same call control system and a proxy response is made for an incoming call of another call control system, the terminal user can make a proxy response by the same operation as in the same call control system. Thus, the user operability can be improved.

  According to a first aspect of the present invention, there is provided a first call control system having a plurality of terminals and a call control device, and a second call control system connected to the first call control system via a gateway device. A proxy response control method in an integrated call control system comprising: when a proxy response operation is performed from a terminal in the first call control system, an incoming call in the first call control system is first searched. If there is an incoming call, a proxy response is made to the incoming call, and if there is no incoming call, the incoming call is searched for in the second call control system.

  According to this method, even when there is no incoming call in the same call control system and the incoming call of another call control system is proxied, the terminal user can make a proximate response by the same operation as in the same call control system. Thus, the user operability can be improved.

  According to a second aspect of the present invention, there is provided a first call control system having a plurality of terminals and a call control device, a second call control system connected to the first call control system via a gateway device, A proxy response control method in an integrated call control system comprising: a search for an incoming call in the second call control system when a proxy response operation is performed from a terminal in the first call control system If there is an incoming call, a proxy response is made to the incoming call.

  According to this method, by the same proxy response operation, it is possible to respond in priority to an incoming call of another call control system, and then proxy the incoming call of the same call control system. This is convenient when the system is used with priority. As a result, it is possible to improve convenience for users who use different call control systems.

  According to a third aspect of the present invention, in the proxy response control method according to the second aspect, if there is no incoming call in the second call control system, the terminal requesting the proxy response of the first call control system is provided. In response, a proxy response re-request instruction is transmitted.

  According to this method, when there is no incoming call corresponding to the proxy response in the second call control system, the first call control system is again prompted to retransmit the proxy response request, The proxy response of the incoming call in the call control system can be realized, and the convenience of the proxy response function can be improved.

  According to a fourth aspect of the present invention, in the proxy response control method according to the first or second aspect, the first call control system and the second call control system operate with different call control protocols, and the gateway The apparatus performs protocol conversion between the first call control system and the second call control system.

  According to this method, for example, the SIP protocol and H.264 are used. A proxy response between call control systems of different call control protocols such as the H.323 protocol can also be a proxy response by the same operation as in the system, and the operability for the user is improved.

  According to a fifth aspect of the present invention, there is provided a first call control system having a plurality of terminals and a call control device; a second call control system connected to the first call control system via a gateway device; A proxy response control method in an integrated call control system comprising: a priority setting step for setting a priority of a call control system for searching for a proxy response; and a proxy response operation from a terminal in the call control system When the incoming call is received, the incoming call is searched in order from the call control system having the highest priority based on the priority set in the priority setting step, and if there is an incoming call, a proxy response is made to the incoming call. If not, a search step for searching for an incoming call in the call control system of the next priority is included.

  According to this method, since the priority order of the call control system that performs proxy response processing can be set, it is possible to change the priority order of proxy responses according to the user's usage, and to perform proxy response operations with good operability. it can.

  According to a sixth aspect of the present invention, there is provided a first call control system having a plurality of terminals and a call control device, and a second call control system connected to the first call control system via a gateway device. When a proxy response operation is performed from a terminal in the first call control system, an incoming call in the first call control system is searched and if there is an incoming call A proxy response control means for searching for an incoming call in the second call control system is adopted if a proxy response is made to the incoming call and there is no incoming call.

  According to this configuration, even when there is no incoming call within the same call control system and the incoming call of another call control system is proxied, the terminal user can make a proximate response with the same operation as in the same call control system. Thus, the user operability can be improved.

  According to a seventh aspect of the present invention, there is provided a first call control system having a plurality of terminals and a call control device, a second call control system connected to the first call control system via a gateway device, When a proxy response operation is performed from a terminal in the first call control system, an incoming call in the second call control system is searched for if there is an incoming call. A proxy response control means for searching for an incoming call in the first call control system is adopted if a proxy response is made to the incoming call and there is no incoming call.

  According to this configuration, by the same proxy response operation, a call can be preferentially responded to an incoming call of another call control system, and then a proxy response can be made to an incoming call of the same call control system. This is convenient when the system is used with priority. As a result, it is possible to improve convenience for users who use different call control systems.

  According to an eighth aspect of the present invention, in the integrated call control system according to the sixth or seventh aspect, the first call control system and the second call control system operate with different call control protocols, and the gateway The apparatus adopts a configuration for performing protocol conversion between the first call control system and the second call control system.

  According to this configuration, for example, the SIP protocol and H.264 are used. A proxy response between call control systems of different call control protocols such as the H.323 protocol can also be a proxy response by the same operation as in the system, and the operability for the user is improved.

  A ninth aspect of the present invention is an integrated call control system in which a plurality of call control systems each having a plurality of terminals and a call control device are connected via a gateway device, for searching for a proxy response A priority setting means for setting the priority of the call control system; and when a proxy response operation is performed from a terminal in the call control system, a higher priority is set based on the priority set by the priority setting means. Proxy response control means for retrieving an incoming call in order from the call control system, proxying the incoming call if there is an incoming call, and retrieving the incoming call of the next priority call control system if there is no incoming call; The structure provided with is taken.

  According to this configuration, since the priority order of the call control system that performs proxy response processing can be set, it is possible to change the priority order of proxy responses according to the user's usage and to perform proxy response operations with good operability. it can.

  According to a tenth aspect of the present invention, in the integrated call control system according to any one of the sixth to eighth aspects, the gateway device receives the proxy response request from the first call control system and receives the second response request. A search means for searching for an incoming call in the call control system, and a call between the terminal that originated the incoming call and the terminal that requested the proxy response in response to the incoming call searched by the search means. And a connecting means for connecting.

  According to this configuration, for example, the SIP protocol and H.264 are used. A proxy response between call control systems of different call control protocols such as the H.323 protocol can also be a proxy response by the same operation as in the system, and the operability for the user is improved.

  According to an eleventh aspect of the present invention, in the integrated call control system according to the seventh or eighth aspect, the gateway device acts as a proxy for the first call control system when there is no incoming call due to the search by the search means. A configuration is adopted in which a proxy response re-request instruction is transmitted to a terminal that has requested a response.

  According to this configuration, when there is no incoming call corresponding to the proxy response in the second call control system, the first call control system is again prompted to retransmit the proxy response request, The proxy response of the incoming call in the call control system can be realized, and the convenience of the proxy response function can be improved.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
FIG. 1 is a diagram showing a system configuration of the first embodiment. In FIG. 1, a call control system A 100 and a call control system B 200 are connected via an inter-system gateway device 10. The call control system A100 includes a call control device A101, IP terminals 102 to 104, a terminal gateway device 105, non-IP terminals 106 and 107, and a line gateway device 108. The call control system B200 includes a call control device B201, IP terminals 202 and 203, a terminal gateway device 204, non-IP terminals 205 and 206, and a line gateway device 207. Note that the numbers of IP terminals and non-IP terminals in the call control system A100 and the call control system B200 are examples, and the numbers are not limited.

  In the call control system A100, the call control device A101, the IP terminals 102 to 104, the terminal gateway device 105, and the line gateway device 108 are connected to each other via an IP network N such as a LAN (Local Area Network). In the call control system B200, the call control device B201, the IP terminals 202 and 203, the terminal gateway device 204, and the line gateway device 207 are connected to each other via an IP network N such as a LAN.

  In the first embodiment, the call control system A100 uses H.264 as a communication protocol. Assume that the call control system B 200 uses H.323 and SIP (Session Initiation Protocol) as a communication protocol. Further, the inter-system gateway device 10 that interworkes the call control system A100 and the call control system B200 is a virtual terminal of the call control system A100 and a virtual terminal of the call control system B200.

  The inter-system gateway apparatus 10 is a communication protocol H.264 of the call control system A100. 323 and the call control system B200 have a function of performing protocol conversion to absorb the difference in the communication protocol SIP protocol. Further, the inter-system gateway apparatus 10 has a pickup control function according to the special number dial notification from the call control apparatus A101 or the call control apparatus B201.

  The call control device A101 is connected between the call control function for controlling incoming and outgoing calls to the IP terminals 102 to 104 and the non-IP terminals 106 and 107, and the call control device B201 in the call control system B via the intersystem gateway device 10. And a pickup control function for controlling the pickup processing accompanying the special number dial operation.

  The call control device B 201 is connected between the call control function for controlling incoming and outgoing calls to the IP terminals 202 and 203 and the non-IP terminals 205 and 206 and the call control device A 101 in the call control system B via the inter-system gateway device 10. And a pickup control function for controlling the pickup processing accompanying the special number dial operation.

  The IP terminals 102 to 104 and the IP terminals 202 and 203 are VoIP (Voice over Internet Protocol) compatible IP telephones. The non-IP terminals 106 and 107 and the non-IP terminals 205 and 206 are ordinary telephones.

  The terminal gateway devices 105 and 204 have a function of performing protocol conversion to absorb the difference between the communication protocol of the non-IP terminals 106 and 107 and the non-IP terminals 205 and 206 and the communication protocol of the IP terminal.

  The line gateway devices 108 and 207 are connected to a PSTN (Public Switched Telephone Networks) and have a function of performing protocol conversion for absorbing the difference between the communication protocol of the IP network N and the communication protocol of the PSTN.

  Next, the configurations of the inter-system gateway apparatus 10, the call control apparatus A101 and the call control apparatus B201, the terminal gateway apparatuses 105 and 204, and the IP terminals 102 to 104, 202, and 203 will be described with reference to FIG. . 2, the call control device A101 and the call control device B201 have the same configuration, and the terminal gateway device 105, the terminal gateway device 204, and the IP terminals 102 to 104, 202, and 203 have the same configuration and are shown in the same drawing.

  The inter-system gateway device 10 includes a CPU (Central Processing Unit) 11, a call connection control unit 12, a TCP / IP control unit 13, and a memory 14.

  The CPU 11 controls the entire inter-system gateway device 10 based on a control program stored in a built-in memory (not shown). Further, the CPU 11 searches for an incoming call in the call control system A100 or the call control system B200 based on the special number included in the call setting message received from the call control system A100 or the call control system B200 by the TCP / IP control unit 13. When there is an incoming call, an inter-system pickup control process is executed in which an IP terminal (pick terminal) that has input a special number makes a proxy response.

  The call connection control unit 12 stores a call connection control program, and executes a call connection control process between the call control device A 101 and the call control device B 201 based on the call connection control program.

  The TCP / IP control unit 13 stores a TCP / IP control program. The message converted into the H.323 protocol or the SIP protocol is transmitted / received between the call control device A101 and the call control device B201.

  The memory 14 stores a special number determination table 300 shown in FIG. 3 and a call state table 400 shown in FIG. The special number determination table 300 stores “special number” and “meaning” corresponding to the special number. In this case, an example in which the special number “10” is stored as “pickup” is shown. The call state table 400 stores a “state” representing the call operation state for each “terminal number” of each terminal included in the call control system A 100 and the call control system B 200. In this case, an example is shown in which the call state “calling” of the terminal number “A” is stored.

  The call control devices A 101 and B 201 are composed of a CPU 121, a call connection control unit 122, a TCP / IP control unit 123, and a memory 124.

  The CPU 121 controls the entire call control devices A101 and B201 based on a control program stored in a built-in memory (not shown). Further, when the TCP / IP control unit 123 receives a proxy response request (pickup special number) from the IP terminal (pick terminal), the CPU 121 gives priority to the incoming call in the same call control system A100 or call control system B200. Search and if there is an incoming call, H. Pickup control based on H.323 protocol or SIP protocol is executed. When there is no incoming call, a proxy response request (pickup special number) is transmitted to the inter-system gateway apparatus 10 by the TCP / IP control unit 123, and the call control system A100 or the call control system is different via the inter-system gateway apparatus 10. Search for an incoming call in B200. The CPU 121 functions as a proxy response control unit.

  The call connection control unit 122 stores a call connection control program, and executes a call connection control process between the IP terminals 102 to 104, 202, 203 and the inter-system gateway device 10 based on the call connection control program.

  The TCP / IP control unit 123 stores a TCP / IP control program. A message based on the H.323 protocol is transmitted and received between the inter-system gateway apparatus 10 and the IP terminals 102 to 104, 202, and 203 and the terminal gateway apparatuses 105 and 204.

  The memory 124 stores a special number determination table 500 shown in FIG. 5 and a call state table 600 shown in FIG. The special number determination table 500 stores “special number” and “meaning” corresponding to the special number. In this case, an example in which the special number “10” is stored as “pickup” is shown. The call state table 600 stores a “state” representing the call operation state for each “terminal number” of each terminal included in the call control system A100 and the call control system B200. In this case, an example is shown in which the call state “calling” of the terminal number “A” is stored.

  The terminal gateway devices 105 and 204 and the IP terminals 102 to 104, 202, and 203 include a CPU 141, a call connection control unit 142, a TCP / IP control unit 143, and a memory 144.

  The CPU 141 controls the terminal gateway devices 105 and 204 and the IP terminals 102 to 104, 202 and 203 as a whole based on a control program stored in a built-in memory (not shown). Further, the CPU 141 controls outgoing / incoming processing for the non-IP terminals 106, 107, 205, and 206.

  The call connection control unit 142 stores a call connection control program and executes a call connection control process between the non-IP terminals 106, 107, 205, 206 and the call control devices A101, B201 based on the call connection control program. To do.

  The TCP / IP control unit 143 stores a TCP / IP control program. A message converted into the H.323 protocol or the PSTN protocol is transmitted and received between the call control apparatuses A 101 and B 201 and the non-IP terminals 106, 107, 205, and 206.

  The memory 144 stores a special number determination table 300 shown in FIG. 3 and a call state table 400 shown in FIG.

  Note that the configuration of the line gateway devices 108 and 207 is the same as the configuration of the terminal gateway devices 105 and 204, and therefore illustration and description thereof are omitted.

  Next, the sequence diagram shown in FIG. 7 and FIG. 8 shows the operation when the incoming call from the IP terminal in the call control system A100 to the IP terminal in the call control system A100 is preferentially picked up in the system of FIG. The description will be given with reference.

  7 and 8, the operation of making a call from the IP terminal 104 in the call control system A100 to the IP terminal 103 and picking up this call by the IP terminal 102 will be described. Therefore, it is assumed that the calling terminal shown in FIGS. 7 and 8 is the IP terminal 104, the called terminal is the IP terminal 103, and the pick terminal is the IP terminal 102. 7 and 8, it is assumed that the IP terminal 202 in the call control system B 200 is a calling terminal and the IP terminal 203 is a called terminal.

  First, as shown in FIG. 1, in a call control system A100, a user of a calling terminal (IP terminal 104, hereinafter called calling terminal 104) responds to a called terminal (IP terminal 103, called called terminal 103). It is assumed that there is a call and the special number is dialed by the user of the pick terminal (IP terminal 102, hereinafter referred to as pick terminal 102) while the called terminal is ringing. The call sequence in the call control system A100 is not shown in FIG.

  In FIG. 7, when a special number “10” is dialed by the user of the pick terminal 102 (step S101), an ARQ (Admission Request) message including the special number is transmitted to the call control apparatus A101 (step S102). ). The call control apparatus A101 determines the presence / absence of the special number “10” from the received ARQ message with reference to the special number determination table 500 of FIG. 5 (step S103).

  If the call control apparatus A101 determines that the special number “10” is present (step S103: YES), the call control apparatus A101 refers to the call state table 600 in FIG. 6 to determine whether or not there is an incoming call in the call control system A100. (Step S104). When it is determined that there is an incoming call (step S104: YES), that is, a call from the calling terminal 104 is called to the called terminal 103, and the incoming call to the called terminal 103 is made in the call state table 600. Is stored, the call control apparatus A101 transmits an ARJ (Admission Reject) message including called terminal information to the pick terminal 102 (step S105).

  The pick terminal 102 transmits a FACILITY message including its own terminal address to the called terminal 103 based on the called terminal information of the received ARJ message (step S106). The called terminal 103 transfers the received FACILITY message to the calling terminal 104 (step S107). When receiving the FACILITY message from the called terminal 103, the calling terminal 104 transmits a FACILITY message including its own address to the called terminal 103 (step S108). The called terminal 103 transfers the received FACILITY message to the pick terminal 102 (step S109).

  Next, the calling terminal 104 transmits an ARQ message to the call control apparatus A101 (step S110). The call control device A101 transmits an ACF (Admission Confirm) message for the received ARQ message to the calling terminal 104 (step S111). After receiving the ACF message, the calling terminal 104 transmits a SETUP (call setting) message to the pick terminal 102 (step S112). Upon receiving the SETUP message, the pick terminal 102 transmits a CALL PROC (call setting acceptance) message to the calling terminal 104 (step S113), and then transmits an ARQ message to the call control apparatus A101 (step S114).

  The call control apparatus A101 transmits an ACF message corresponding to the received ARQ message to the pick terminal 102 (step S115). Upon receiving the ACF message, the pick terminal 102 transmits a CONN (response) message to the calling terminal 104 (step S116). Through the processes in steps S105 to S116 described above, the call pickup of the incoming call to the incoming call terminal 103 by the pick terminal 102 is completed, and thereafter, a call is performed between the calling terminal 104 and the pick terminal 102 (step S117).

  When the call is finished, the calling terminal 104 transmits a REL_COMP (release complete) message to the pick terminal 102 (step S118), and then transmits a DRQ (leave request) message to the call control apparatus A101 (step S119). After receiving the DRQ message, the call control apparatus A101 transmits a DCF (withdrawal confirmation) message to the calling terminal 104 (step S120). Subsequently, the called terminal 103 transmits a DRQ message to the call control apparatus A101 (step S121), and the call control apparatus A101 transmits a DCF message to the called terminal 103 (step S122).

  Through the processing from step S118 to step S122, the call between the calling terminal 104 and the pick terminal 102 is finished, and the processing of the called terminal 103 is also finished. Further, the processing in steps S105 to S122 described above is pickup control in the call control system A100.

  Next, in the call control device A101, when it is determined that the ARQ message transmitted from the pick terminal 102 does not include a special number (step S103: NO), or there is no incoming call in the call control system A100. If it is determined (step S104: NO), the call control apparatus A101 proceeds to step S123 in FIG.

  In this case, since the call control apparatus A cannot detect an incoming call outside the call control system A100, if there is no incoming call in the call control system A100 in response to a pickup request by a special number from the pick terminal 102, the pick terminal 102 Then, the process proceeds to a process for prompting a call to the call control system B200.

  In FIG. 8, it is assumed that in the call control system B200, a special number is dialed by the pick terminal 102 while the called terminal 203 is ringing due to a call from the calling terminal 202 to the called terminal 203. This call sequence is not shown.

  The call control device A101 transmits an ACF message to the pick terminal 102 (step S123). After receiving the ACF message, the pick terminal 102 transmits a SETUP message including the special number to the inter-system gateway device 10 (step S124). After receiving the SETUP message, the inter-system gateway apparatus 10 receives the SETUP message. A CALL PROC message is transmitted to the pick terminal 102 using the H.323 protocol (step S125).

  Next, the inter-system gateway apparatus 10 determines the presence / absence of the special number “10” from the received SETUP message with reference to the special number determination table 300 of FIG. 3 (step S126). When the inter-system gateway apparatus 10 determines that the special number “10” is present (step S126: YES), the call state table 400 in FIG. 4 is referred to for the presence / absence of an incoming call in the call control system B200. (Step S127).

  At this time, in the call control system B200, it is assumed that there is a call from the calling terminal 202 to the called terminal 203, and the intersystem gateway apparatus 10 detects this incoming call.

  If it is determined that there is an incoming call due to this incoming call (step S127: YES), the inter-system gateway device 10 determines that the An ARQ message is transmitted to the call control apparatus A101 using the H.323 protocol (step S128). After receiving the ARQ message, the call control apparatus A101 transmits an ACF message to the intersystem gateway apparatus 10 (step S129).

  Next, after receiving the ACF message, the inter-system gateway device 10 transmits a 200 OK message to the call control device B 201 using the SIP protocol in order to connect the call between the pick terminal 102 and the calling terminal 202 (step S130). . The call control device B201 transfers the received 200 OK message to the calling terminal 202 (step S131). Thereafter, the inter-system gateway apparatus 10 is connected to the H.264 gateway. A CONN message is transmitted to the pick terminal 102 using the H.323 protocol (step S132). After receiving the 200 OK message, the calling terminal 202 transmits an ACK (response) message to the call control apparatus B 201 (step S133). The call control device B201 transmits the received ACK message to the intersystem gateway device 10 (step S134).

  Through the processes in steps S123 to S134, the pick-up process of the incoming call to the incoming call terminal 203 by the pick terminal 102 is completed, and a call can be made between the pick terminal 102 and the calling terminal 202. And the calling terminal 202 are talked (step S135). Here, the call control device B201 transmits a CANCEL message to the incoming call terminal 203 and stops ringing of the incoming call terminal 203 (step S136).

  The processing from step S126 to step S136 is pickup control on the call control system B 200 side.

  When it is determined that the intersystem gateway apparatus 10 does not receive an incoming call (step S127: NO), the process proceeds to step S137, and a REL_COMP message is transmitted to the pick terminal 102. After receiving the REL_COMP message, the pick terminal 102 transmits a DRQ message to the call control apparatus A101 (step S138). After receiving the DRQ message, the call control apparatus A101 transmits a DCF message to the pick terminal 102 (step S139).

  Through the processes in steps S137 to S139 described above, the pickup process is canceled because there is no corresponding incoming call in response to the pickup request from the pick terminal 102.

  If it is determined that the special number is not included in the SETUP message transmitted from the pick terminal 102 in the inter-system gateway device 10 (step S126: NO), the process proceeds to step S140, and the INVITE (session start) message is displayed. Is transmitted to the call control apparatus B201. After receiving the INVITE message, the call control device B201 transmits a 407 (Proxy Authentication Required: INVITE authentication error) message to the inter-system gateway device 10 (step S141).

  In this case, since the call control device B201 is a session start request from the pick terminal 102 not authenticated by the own call control group B200, the request is rejected.

  Then, the inter-system gateway apparatus 10 receives the 407 message, and again transmits the INVITE message with the modified setting contents to the call control apparatus B 201 (step S142). Thereafter, although illustration is omitted, call control for the IP terminal in the call control system B 200 requested from the pick terminal 102 is executed between the inter-system gateway device 10 and the call control device B 201.

  The processes in steps S140 to S142 described above are call control on the call control system B 200 side.

  As described above, in the system according to the first embodiment, when an incoming call from the IP terminal in the call control system A to the call control system A is preferentially picked up, the pickup from the pick terminal in the call control system A is performed. When a special number is dialed, if the call control system A has an incoming call, the pickup control is performed. If there is no incoming call, the call control system B is interworked between the call control system A and the call control system B to the call control system B. A call was made to the other party. Further, the inter-system gateway apparatus performs pick-up control for the called terminal in the call control system B if there is an incoming call in the call control system B. I tried to do it.

  Therefore, even when there is no incoming call in the same call control system and a proxy response is received for an incoming call of another call control system, the pick terminal user can make a proxy response with the same special number operation as in the same call control system. The user operability can be improved. As a result, it is possible to improve convenience for users who use different call control systems.

  In the first embodiment, the case where the inter-system gateway apparatus 10 executes a process for shifting to the pickup control for the call control system B200 has been described, but this process is executed in the call control apparatus B201. Also good.

  In the first embodiment, the special number dial is described as an example of the proxy response operation. However, the proxy response is not limited to the special number, and the proxy response may be performed by another operation method such as a proxy response button.

(Embodiment 2)
In the second embodiment, a case will be described in which an incoming call from the IP terminal of the call control system A to the call control system B is preferentially picked up.

  The system configuration, the inter-system gateway device, the call control devices A and B, and the terminal gateway device according to the second embodiment are the same as those shown in FIGS. Is omitted.

  With reference to the sequence diagrams shown in FIG. 9 and FIG. 10, the operation when priority is given to the incoming call from the IP terminal in the call control system A100 to the IP terminal in the call control system B200 in the system of FIG. explain.

  9 and 10, as in the first embodiment, the IP terminal 104 in the call control system A100 is the calling terminal, the IP terminal 103 is the called terminal, the IP terminal 102 is the pick terminal, and the call control system B200. The IP terminal 202 is a calling terminal, and the IP terminal 203 is a called terminal.

  In FIG. 9, an operation of preferentially picking up an incoming call from the pick terminal 102 of the call control system A100 to the called terminal 203 in the call control system B200 will be described.

    First, in FIG. 1, in the call control system B200, the user of the calling terminal 202 makes a call to the called terminal 203, and the special number is dialed by the user of the pick terminal 102 while the called terminal is ringing. Shall. The call sequence in the call control system B200 is not shown in FIG.

  In FIG. 9, when the user of the pick terminal 102 dials the special number “10” (step S201), an ARQ message including the special number is transmitted to the call control apparatus A101 (step S202). The call control apparatus A101 determines the presence / absence of the special number “10” from the received ARQ message with reference to the special number determination table 500 of FIG. 5 (step S203).

  When it is determined that the special number “10” is present (step S203: YES), the call control apparatus A101 determines whether pickup information is added to the ARQ message (step S204). This pickup information (proxy response re-request instruction) is information added by the inter-system gateway device 10 described later in order to determine whether or not to return the pickup processing to the call control system A100.

  When it is determined that the pickup information is not added (step S204: NO), the call control apparatus A101 transmits an ACF message to the pick terminal 102 to prompt the pick terminal 102 to make a call to the call control system B200. (Step S205). After receiving the ACF message, the pick terminal 102 transmits a SETUP message including the special number to the inter-system gateway device 10 (step S206). After receiving the SETUP message, the inter-system gateway apparatus 10 receives the SETUP message. A CALL PROC message is transmitted to the pick terminal 102 using the H.323 protocol (step S207).

  Next, the inter-system gateway apparatus 10 determines the presence / absence of the special number “10” from the received SETUP message with reference to the special number determination table 300 in FIG. 3 (step S208). When the inter-system gateway apparatus 10 determines that the special number “10” exists (step S208: YES), the call state table 400 in FIG. 4 is referred to for the presence / absence of an incoming call in the call control system B200. (Step S209).

  At this time, in the call control system B200, it is assumed that there is a call from the calling terminal 202 to the called terminal 203, and the intersystem gateway apparatus 10 detects this incoming call.

  When it is determined that there is an incoming call due to this incoming call (step S209: YES), the inter-system gateway apparatus 10 determines that the An ARQ message is transmitted to the call control apparatus A101 using the H.323 protocol (step S210). After receiving the ARQ message, the call control device A101 transmits an ACF message to the intersystem gateway device 10 (step S211).

  Next, after receiving the ACF message, the inter-system gateway apparatus 10 transmits a 200 OK message to the call control apparatus B 201 using the SIP protocol in order to connect a call between the pick terminal 102 and the calling terminal 202 (step S212). . The call control device B201 transfers the received 200 OK message to the calling terminal 202 (step S213). Thereafter, the inter-system gateway apparatus 10 is connected to the H.264 gateway. A CONN message is transmitted to the pick terminal 102 using the H.323 protocol (step S214). After receiving the 200 OK message, the calling terminal 202 transmits an ACK message to the call control device B 201 (step S215). The call control device B201 transmits the received ACK message to the intersystem gateway device 10 (step S216).

  Through the processes in steps S205 to S216 described above, the pick-up process of the incoming call to the incoming call terminal 203 by the pick terminal 102 is completed, and a call can be performed between the pick terminal 102 and the calling terminal 202. And a calling terminal 202 are communicated (step S217). Here, the call control device B 201 transmits a CANCEL message to the incoming call terminal 203 and stops ringing of the incoming call terminal 203 (step S218).

  The processing from step S205 to step S217 is call control on the call control system A100 side, and the processing from step S209 to step S218 is pickup control on the call control system B200 side.

  Therefore, the pick terminal 102 in the call control system A100 can preferentially pick up an incoming call to the call control system B200 by the processes in steps S201 to S218 described above.

  If the call control device A101 determines that there is no special number in the ARQ message (step S203: NO), the call control device A101 determines that the call is to the normal call control system B200 and proceeds to step S205. A calling process to the control system B200 is executed.

  If the inter-system gateway device 10 determines that it is not a special number (step S208: NO), it determines that the call is to the normal call control system B200, and proceeds to step S223, and sends the INVITE message to the call control device B201. Send to. After receiving the INVITE message, the call control device B201 transmits a 407 message to the intersystem gateway device 10 (step S224).

  In this case, since the call control device B201 is a session start request from the pick terminal 102 not authenticated by the own call control group B200, the request is rejected.

  Then, the inter-system gateway device 10 receives the 407 message, and again transmits the INVITE message whose setting contents are corrected to the call control device B 201 (step S225). Thereafter, although illustration is omitted, call control for the IP terminal in the call control system B 200 requested from the pick terminal 102 is executed between the inter-system gateway device 10 and the call control device B 201.

  The processes in steps S223 to S225 described above are call control on the call control system B 200 side.

  If the inter-system gateway device 10 determines that there is no incoming call into the call control system B200 (step S209: NO), the process proceeds to step S219 for call disconnection processing, and pickup information (proxy response) A REL_COMP message to which a re-request instruction is added is transmitted to the pick terminal 102. After receiving the REL_COMP message, the pick terminal 102 transmits a DRQ message to the call control apparatus A101 (step S220). After receiving the DRQ message, the call control apparatus A101 transmits a DCF message to the pick terminal 102 (step S221). The pick-up request of the pick terminal 102 has failed due to the processing of steps S219 to S221 described above, and the processing ends here.

  Next, the pick terminal 102 determines whether or not pickup information is added to the received REL_COMP message (step S222). If it is determined that the pickup information has not been added (step S222: NO), the pickup terminal 102 pickup request is unsuccessful, and the process ends. If it is determined that pickup information has been added (step S222: YES), the process returns to step S203.

  In step S203, the pick terminal 102 transmits an ARQ message to which the special pickup number “10” and the received pickup information are added to the call control apparatus A101. The call control device A101 determines that there is a special number (step S203: YES), determines that there is pickup information (step S204: YES), and proceeds to step S226 in FIG.

  Here, when a call from the calling terminal 104 is called to the called terminal 103 and the incoming call to the called terminal 103 is stored in the call state table 600, the call control device A101 An ARJ message including the called terminal information is transmitted to the pick terminal 102 (step S226).

  The subsequent processing in steps S227 to S243 shown in FIG. 10 is the same as the pickup control in call control system A100 in steps S106 to S122 shown in FIG.

  As described above, in the system of the second embodiment, when an incoming call from the IP terminal of the call control system A to the IP terminal of the call control system B is preferentially picked up, the pickup is performed from the IP terminal of the call control system A. When the special number is dialed, the call control device A of the call control system A performs call processing to the call control system B via the inter-system gateway device that interworks the call control system A and the call control system B. If there is an incoming call to the IP terminal in the call control system B, the pickup control is performed. If there is no incoming call, the automatic recurrence by the pickup special number dial to which the pickup information is added to the call control system A through the inter-system gateway device. Call processing is performed, and if an IP terminal in the call control system A has an incoming call, a pickup control is performed, and if there is no incoming call, a process of making a call failure is executed.

  Therefore, by the same proxy response operation, it is possible to preferentially respond to an incoming call of another call control system, and then proxy the incoming call of the same call control system, giving priority to the other call control system. This is convenient when using the As a result, it is possible to improve convenience for users who use different call control systems.

  In the second embodiment, the case where the inter-system gateway apparatus 10 executes a process for shifting to the pickup control for the call control system B200 has been described. However, this process is executed in the call control apparatus B201. Also good.

  In the second embodiment, the special number dial is described as an example of the proxy response operation. However, the proxy response is not limited to the special number, and the proxy response may be performed by another operation method such as a proxy response button.

  In the first and second embodiments, the IP terminal in the call control system A preferentially picks up the incoming call to the IP terminal in the call control system A, and the IP terminal in the call control system A calls Although an example has been described in which an incoming call to an IP terminal in the control system B is preferentially picked up, priority of the call control system to be picked up may be set.

  For example, in the call control apparatuses A101 and B201 in FIG. 2, the priority order of the call control systems A100 and B200 for searching for an incoming call after receiving a pickup request is set in the memory 124, and the pickup special number is picked up from the pick terminal 102. When the call is received, the incoming call in the call control system A100 or the call control system B200 is preferentially searched based on the priority set in the memory 124, and the first embodiment or the second embodiment described above. The pickup control shown in FIG.

  In this case, since the priority order of the call control system that performs the proxy response process can be set, the priority order of the proxy response can be changed according to the user's usage, and the proxy response operation with good operability can be performed.

  According to the proxy response control method and the integrated call control system according to the present invention, even when there is no incoming call in the same call control system and the incoming call of another call control system is proxied, the terminal user can control the same call. This is useful in that the proxy response can be performed by the same special number operation as in the system, and the operability when realizing the proxy response function between different call control systems can be improved.

The block diagram which shows the system configuration | structure which concerns on Embodiment 1 of this invention. The block diagram which shows each structure of the inter-system gateway apparatus which concerns on this Embodiment 1, a call control apparatus, and a terminal gateway apparatus The figure which shows an example of the special number determination table which the inter-system gateway apparatus which concerns on this Embodiment 1 memorize | stores. The figure which shows an example of the call state table which the inter-system gateway apparatus which concerns on this Embodiment 1 memorize | stores. The figure which shows an example of the special number determination table which the call control apparatus which concerns on this Embodiment 1 memorize | stores. The figure which shows an example of the call state table which the call control apparatus which concerns on this Embodiment 1 memorize | stores. The sequence diagram which shows a part of operation | movement at the time of picking up the incoming call from the IP terminal in the call control system A to the IP terminal in the call control system A with priority in the system according to the first embodiment. FIG. 7 is a sequence diagram illustrating the pickup operation following FIG. 7 according to the first embodiment. Sequence diagram showing a part of the pickup operation in the system according to the second embodiment of the present invention FIG. 9 is a sequence diagram showing a part of the pickup operation following FIG. 9 according to the second embodiment.

Explanation of symbols

10 Inter-system gateway device 101 Call control device A
102, 103, 104, 202, 203 IP terminal 105, 204 Terminal gateway device 106, 107, 205, 206 Non-IP terminal 108, 207 Line gateway device 11, 121, 141 CPU
12, 122, 142 Call connection control unit 13, 123, 143 TCP / IP control unit 14, 124, 144 Memory 201 Call control device B
300, 500 Special number determination table 400, 600 Call status table N IP network

Claims (11)

In an integrated call control system comprising a first call control system having a plurality of terminals and a call control device, and a second call control system connected to the first call control system via a gateway device A proxy response control method comprising:
When a proxy response operation is performed from a terminal in the first call control system, first, an incoming call in the first call control system is searched, and if there is an incoming call, a proxy response is made to the incoming call. If there is not, the proxy response control method characterized in that an incoming call in the second call control system is searched next. In an integrated call control system comprising a first call control system having a plurality of terminals and a call control device, and a second call control system connected to the first call control system via a gateway device A proxy response control method comprising:
When a proxy response operation is performed from a terminal in the first call control system, first, an incoming call in the second call control system is searched, and if there is an incoming call, a proxy response is made to the incoming call. If there is no call, a proxy response control method characterized by searching for an incoming call in the first call control system.   3. The proxy response re-request instruction is transmitted to a terminal that has requested a proxy response of the first call control system if there is no incoming call in the second call control system. Proxy response control method.   The first call control system and the second call control system operate with different call control protocols, and the gateway device performs protocol conversion between the first call control system and the second call control system. 3. The proxy response control method according to claim 1 or 2, wherein: In an integrated call control system comprising a first call control system having a plurality of terminals and a call control device, and a second call control system connected to the first call control system via a gateway device A proxy response control method comprising:
A priority setting step for setting the priority of the call control system for searching for a proxy response, and when a proxy response operation is performed from a terminal in the call control system, the priority set in the priority setting step is set. Based on the call control system having the highest priority, the incoming call is searched in order. If there is an incoming call, the incoming call is proxied. If there is no incoming call, the incoming call in the next priority call control system is searched. A proxy response control method. In an integrated call control system comprising a first call control system having a plurality of terminals and a call control device, and a second call control system connected to the first call control system via a gateway device ,
When a proxy response operation is performed from a terminal in the first call control system, an incoming call in the first call control system is searched, and if there is an incoming call, the proxy response is made to the incoming call. If not, an integrated call control system comprising proxy response control means for searching for an incoming call in the second call control system. In an integrated call control system comprising a first call control system having a plurality of terminals and a call control device, and a second call control system connected to the first call control system via a gateway device ,
When a proxy response operation is performed from a terminal in the first call control system, a search is made for an incoming call in the second call control system, and if there is an incoming call, a proxy response is made to the incoming call. If not, an integrated call control system comprising proxy response control means for searching for an incoming call in the first call control system.   The first call control system and the second call control system operate with different call control protocols, and the gateway device performs protocol conversion between the first call control system and the second call control system. The integrated call control system according to claim 6 or 7, wherein: An integrated call control system in which a plurality of call control systems each having a plurality of terminals and a call control device are connected via a gateway device,
Priority setting means for setting the priority of the call control system for searching for a proxy response; and when a proxy response operation is performed from a terminal in the call control system, the priority set by the priority setting means Based on the call control system having the highest priority, the incoming call is searched in order, and if there is an incoming call, the proxy response is answered, and if there is no incoming call, the incoming call of the next priority call control system is searched. And an integrated call control system.   The gateway device receives a proxy response request from the first call control system and retrieves an incoming call in the second call control system, and responds to the incoming call retrieved by the retrieval unit. And a connecting means for connecting a call between the terminal that originated the incoming call and the terminal that requested the proxy response. Call control system.   The gateway device transmits a proxy response re-request instruction to a terminal that has requested a proxy response of the first call control system when there is no incoming call due to the search by the search means. Item 9. The integrated call control system according to Item 7 or 8.

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