JP4957420B2 - Telephone system and automatic transfer restriction method for telephone system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a telephone system which largely improves telephone intermediate work even when a user vicariously answers termination of an automatic transferred call, and holds and transfers the termination call to a telephone terminal of an automatic transfer source. <P>SOLUTION: The telephone switching system 1 accommodates and connects a plurality of extension terminals 2 and extension radio terminals 3, automatically transfers a termination call of the extension radio terminal 3A during automatic transfer setting to the extension terminal 2A of the automatic transfer destination, and holds and transfers the call by the extension radio terminal 3B after the extension radio terminal 3B of vicarious answer source vicariously answers and establishes the speech for the termination during automatic transfer to the extension terminal 2A. When the holding and transferring call to the extension radio terminal 3A from the extension radio terminal 3B of the vicarious answer source concerning the speech is received, repeated automatic transfer to the extension terminal 2A which is the automatic transfer destination of the extension radio terminal 3A is restricted. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention accommodates and connects a plurality of telephone terminals, and automatically transfers the incoming calls to the first telephone terminal that is set for automatic transfer to the second telephone terminal that is the automatic transfer destination among the plurality of telephone terminals. The present invention relates to a telephone system having a service function and an automatic transfer restriction method of the telephone system.

  Conventionally, the automatic transfer service of such a telephone system includes unattended transfer for transferring an incoming call to a telephone terminal when it is absent, unconditional transfer for unconditionally transferring an incoming call to a telephone terminal, and incoming call to a busy telephone terminal. There are various services such as busy transfer for transferring a call, non-response transfer for transfer when a call is not answered to a telephone terminal, and out-of-service transfer for transferring the call when a call is made to a telephone terminal outside the radio range.

  In such a telephone system that provides an automatic transfer service, for each telephone terminal of the automatic transfer source, transfer restriction presence / absence indicating whether or not the automatic transfer service is restricted is set in advance for each extension number of the calling telephone terminal. When an incoming call is detected from the terminal to the telephone terminal of the automatic transfer source, based on the presence / absence of the transfer restriction corresponding to the calling telephone terminal, for example, when there is an automatic transfer service restriction, from the calling telephone terminal to the automatic transfer source telephone terminal Is automatically transferred, and when there is no restriction on the automatic transfer service, the incoming call from the caller side telephone terminal to the automatic transfer source telephone terminal is not automatically transferred (see, for example, Patent Document 1). .

According to the telephone system of Patent Document 1, the presence or absence of transfer restriction indicating whether or not the automatic transfer service on the automatic transfer source telephone terminal side is restricted is set in advance for each extension number of the calling telephone terminal, and is automatically transferred from the calling telephone terminal. When an incoming call to the original phone terminal is detected, the automatic transfer service is regulated and controlled based on the presence or absence of transfer restriction corresponding to the caller's phone terminal, so all incoming calls to the automatic transfer source phone terminal are automatically transferred Instead, the presence / absence of restrictions on automatic transfer can be changed according to the caller telephone terminal, so that flexible automatic transfer can be provided.
JP-A-8-205213 (see abstract and FIG. 1)

  However, according to the telephone system of Patent Document 1, transfer restriction presence / absence indicating restriction of automatic transfer service on the automatic transfer source telephone terminal side is set in advance for each extension number of the calling telephone terminal, and the calling telephone terminal When the incoming call to the call forwarding phone terminal is detected, the call forwarding service is regulated based on the presence or absence of forwarding restrictions corresponding to the calling phone terminal. The other telephone terminal makes a proxy response during automatic transfer to the automatic transfer destination telephone terminal, establishes a call between the telephone terminal that made the proxy response and the calling telephone terminal, and then the user of the telephone terminal that made the proxy response If you perform a hold transfer call that puts the call on hold to the call forwarding source phone terminal without being aware of the call forwarding source, the phone that is the forwarding destination of the call forwarding source phone terminal again Since that would result in automatic transfer, the working efficiency of the telephone agency may be decreased at the end.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a proxy response to an incoming call to an automatic transfer source telephone terminal during automatic transfer to the automatic transfer destination telephone terminal. A telephone system capable of greatly improving the work efficiency of telephone intermediary without requiring automatic transfer again even if the call is held and transferred to the automatic transfer source telephone terminal after establishing the call, and An object of the present invention is to provide an automatic transfer restriction method for the telephone system.

  In order to achieve the above object, a telephone system of the present invention accommodates and connects a plurality of telephone terminals, and receives an incoming call to the first telephone terminal set for automatic forwarding among the plurality of telephone terminals. The call is automatically transferred to the second telephone terminal, and after the third telephone terminal serving as a proxy responds to the incoming call during the automatic transfer to the second telephone terminal and establishes the call, the same call is made at the third telephone terminal. A telephone system for holding and transferring a call on hold, and when receiving a hold and transfer call from the third telephone terminal of the proxy response source to the first telephone terminal involved in the call, the automatic transfer destination of the first telephone terminal The automatic transfer again to a certain second telephone terminal is restricted.

  In order to achieve the above object, an automatic transfer restriction method for a telephone system according to the present invention includes accommodating and connecting a plurality of telephone terminals to a first telephone terminal that is set for automatic transfer among the plurality of telephone terminals. The incoming call is automatically transferred to the second telephone terminal of the automatic transfer destination, and the third telephone terminal of the proxy response source establishes the call by making a proxy response to the incoming call during the automatic transfer to the second telephone terminal. A method for restricting automatic transfer of a telephone system in which the same call is held and transferred by a third telephone terminal, in which the third telephone terminal serving as a proxy responds to the incoming call during automatic transfer to the second telephone terminal. An automatic transfer storing step of storing destination information of the first telephone terminal in the automatic transfer setting related to the automatic transfer in association with the third telephone terminal, and the third telephone terminal makes a call transfer on hold. If the destination information of this hold transfer destination is The automatic transfer determination step for determining whether the destination information stored in the dynamic transfer storage step is the same as the destination information stored in the automatic transfer storage step, and the destination information of the hold transfer destination stored in the automatic transfer storage step in this automatic transfer determination step If the destination information is the same as the destination information, an automatic transfer restricting step for restricting automatic transfer to the second telephone terminal that is the automatic transfer destination of the first telephone terminal during the automatic transfer setting is provided.

  According to the telephone system of the present invention configured as described above, when a hold transfer call is received from the third telephone terminal as the proxy response source to the first telephone terminal involved in the call, the first telephone terminal automatically Since the automatic transfer again to the second telephone terminal that is the transfer destination is restricted, the incoming call to the first telephone terminal that is the automatic transfer source is automatically transferred to the second telephone terminal that is the automatic transfer destination. Even if the call is put on hold and transferred to the first telephone terminal of the automatic transfer source after establishing a call by proxy response, the automatic transfer to the second telephone terminal of the automatic transfer destination is not required again. The work efficiency of the telephone agent can be greatly improved.

  Further, according to the automatic transfer restriction method of the telephone system of the present invention configured as described above, when the third telephone terminal serving as the proxy responds to the incoming call during the automatic transfer to the second telephone terminal. In association with the third telephone terminal, the destination information of the first telephone terminal being set for automatic transfer related to the automatic transfer is stored, and when the third telephone terminal makes the call on hold transfer, the hold transfer is performed. It is determined whether or not the destination information of the destination is the same as the stored destination information. If the destination information of the hold transfer destination is the same as the stored destination information, the first telephone set in the automatic transfer setting Since the automatic transfer to the second telephone terminal which is the automatic transfer destination of the terminal is restricted, the incoming call to the first telephone terminal of the automatic transfer source is automatically transferred to the second telephone terminal of the automatic transfer destination. After establishing a call by proxy answering the incoming call, the call is automatically transferred. Even if you've pending transfer based on the first telephone terminal, may be again, without requiring an automatic transfer of the call forwarding destination to the second telephone terminal, greatly improve the working efficiency of the telephone agency.

  The telephone system according to claim 1 of the present invention accommodates and connects a plurality of telephone terminals, and among the plurality of telephone terminals, an incoming call to the first telephone terminal that is set for automatic forwarding is a second telephone terminal that is an automatic forwarding destination. The call is automatically transferred to the second telephone terminal, and after the third telephone terminal serving as the proxy responds to the proxy call for the incoming call during the automatic transfer to the second telephone terminal, the call is put on hold by the third telephone terminal. The second telephone system that is the automatic transfer destination of the first telephone terminal when receiving a hold transfer call from the third telephone terminal of the proxy response source to the first telephone terminal involved in the call. The automatic transfer to the phone terminal is restricted.

  Therefore, according to the telephone system of claim 1 of the present application, when a hold transfer call is received from the third telephone terminal of the proxy response source to the first telephone terminal involved in the call, Since the automatic transfer again to the second telephone terminal as the transfer destination is restricted, the incoming call to the first telephone terminal as the automatic transfer source is automatically transferred to the second telephone terminal as the automatic transfer destination. Even if the call is put on hold and transferred to the first telephone terminal of the automatic transfer source after establishing the call by proxy response to the incoming call, the automatic transfer to the second telephone terminal of the automatic transfer destination is required again. In addition, the work efficiency of the telephone agent can be greatly improved.

  The telephone system according to claim 2 includes a control device for accommodating and connecting a plurality of telephone terminals, and the control device is connected to the first telephone terminal that is set for automatic transfer among the plurality of telephone terminals. Transfer means for automatically transferring the incoming call to the second telephone terminal as the automatic transfer destination, and the third telephone terminal as the proxy response source for the incoming call during the automatic transfer to the second telephone terminal, And a holding transfer means for holding and transferring the call on hold at the third telephone terminal after the establishment, wherein the control device responds to an incoming call during automatic transfer to the second telephone terminal. An automatic transfer storage means for storing destination information of the first telephone terminal in the automatic transfer setting related to the automatic transfer in association with the third telephone terminal when the third telephone terminal of the response source makes a proxy response; The third telephone terminal is moved forward by the hold transfer means. When a call is placed on hold and transferred, automatic transfer determination means for determining whether the destination information of the hold transfer destination is the same as the destination information stored in the automatic transfer storage means, and the automatic transfer determination means If the destination information of the hold transfer destination is the same as the destination information stored in the automatic transfer storage means, the second telephone terminal that is the automatic transfer destination of the first telephone terminal being set for the automatic transfer again And an automatic transfer restriction means for restricting automatic transfer of.

  Therefore, according to the telephone system according to claim 2 of the present application, when the third telephone terminal as the proxy response source makes a proxy response to the incoming call during automatic transfer to the second telephone terminal, the third telephone terminal Correspondingly, the destination information of the first telephone terminal for which the automatic transfer setting related to the automatic transfer is set is stored in the automatic transfer storage means, and the third telephone terminal makes the hold transfer transmission by the hold transfer means. Determining whether or not the destination information of the hold transfer destination is the same as the destination information stored in the automatic transfer storage unit, and the destination information of the hold transfer destination stored in the automatic transfer storage unit The first telephone terminal of the automatic transfer source is restricted since the automatic transfer again to the second telephone terminal which is the automatic transfer destination of the first telephone terminal in the automatic transfer setting is restricted. 2nd phone with automatic forwarding for incoming calls Even if the call is put on hold and transferred to the first telephone terminal of the automatic transfer source after establishing the call by proxy answering the incoming call during the automatic transfer to the terminal, the second call of the automatic transfer destination is again made. The work efficiency of the telephone agency can be greatly improved without requiring automatic transfer to the terminal.

  In the telephone system according to claim 3 of the present application, in the configuration according to claim 2 of the present application, the control device re-transmits from the first telephone terminal in the automatic transfer setting to the second telephone terminal of the automatic transfer destination. When the automatic transfer is restricted, an automatic transfer restriction informing means for informing automatic transfer restriction to the third telephone terminal that has made the pending transfer is provided.

  Therefore, according to the telephone system described in claim 3 of the present application, in addition to the effect described in claim 2 of the present application, automatic re-transmission from the first telephone terminal in the automatic transfer setting to the second telephone terminal of the automatic transfer destination is performed. When the transfer is restricted, since the automatic transfer restriction is notified to the third telephone terminal that makes the hold transfer call, the user on the third phone terminal side that makes the hold transfer call makes the second call from the first phone terminal. It is possible to recognize the regulations relating to the automatic transfer again to the telephone terminal.

  According to a fourth aspect of the present invention, in addition to the configuration according to the third aspect of the present invention, the automatic transfer restriction notification means is configured to perform the automatic transfer when the automatic transfer setting of the first telephone terminal is busy transfer. As a restriction notification, a busy tone is notified to the third telephone terminal that has made the on-hold transfer transmission.

  Therefore, according to the telephone system of claim 4 of the present application, in addition to the effect of claim 3 of the present application, when the automatic transfer setting of the first telephone terminal is busy transfer, the busy sound is used as the automatic transfer restriction notification. Since the user on the third telephone terminal side listens to the busy tone and repeats the conversation from the first telephone terminal to the second telephone terminal. Recognize regulations related to medium transfers.

  Further, in the telephone system according to claim 5 of the present invention, in the configuration according to claim 3 of the present application, the automatic transfer restriction notification means is configured to perform the automatic transfer when the automatic transfer setting of the first telephone terminal is a transfer other than busy transfer. As a transfer restriction notification, a voice message indicating transfer restriction contents is notified to the third telephone terminal that has made the on-hold transfer transmission.

  Therefore, according to the telephone system of claim 5 of the present application, in addition to the effect of claim 3 of the present application, when the automatic transfer setting of the first telephone terminal is transfer other than busy transfer, Since the voice message indicating the content of the transfer restriction is notified to the third telephone terminal that has made the call on hold transfer, the user on the third telephone terminal side listens to the voice message and receives the first message from the first telephone terminal. It is possible to recognize the regulations related to the automatic transfer again to the two telephone terminals.

  Further, in the telephone system according to claim 6 of the present application, in the configuration according to claim 2 of the present application, the control device corresponds to a private branch exchange that accommodates the plurality of telephone terminals in a wired or wireless manner and executes call control. I made it.

  Therefore, according to the telephone system described in claim 6 of the present application, in addition to the effect described in claim 2 of the present application, since the control device corresponds to the private branch exchange, a telephone system including a normal private branch exchange is provided. Is also applicable.

  Further, in the telephone system according to claim 7 of the present invention, in the configuration according to claim 2 of the present application, the control device manages the plurality of telephone terminals with IP addresses, and the plurality of telephone terminals are wired or wireless. It corresponds to a server that accommodates and executes call control.

  Therefore, according to the telephone system described in claim 7 of the present application, in addition to the effect described in claim 2 of the present application, the control device corresponds to the server, so that it can be applied to an IP telephone system including a server. It is.

  According to the automatic transfer restriction method for a telephone system according to claim 8 of the present application, a plurality of telephone terminals are accommodated and connected, and an incoming call to the first telephone terminal set for automatic transfer is automatically transferred among the plurality of telephone terminals. The third telephone terminal automatically forwards to the second telephone terminal, and after the third telephone terminal serving as a proxy responds to the incoming call during the automatic transfer to the second telephone terminal, In the automatic transfer restriction method of the telephone system for holding and transferring the call on hold, when the third telephone terminal serving as a proxy responds to the incoming call during automatic transfer to the second telephone terminal, In association with the telephone terminal, an automatic transfer storing step for storing destination information of the first telephone terminal for which automatic transfer related to the automatic transfer is set, and when the third telephone terminal makes a transfer transfer on hold, this hold The destination information of the transfer destination is the automatic transfer storage status. The automatic transfer determination step for determining whether the destination information is the same as the destination information stored in the hop, and the destination information of the pending transfer destination stored in the automatic transfer storage step in the automatic transfer determination step The automatic transfer restriction step of restricting automatic transfer to the second telephone terminal that is the automatic transfer destination of the first telephone terminal during the automatic transfer setting.

  Therefore, according to the automatic transfer restriction method for a telephone system according to claim 8 of the present application, when the third telephone terminal of the proxy response source makes a proxy response to an incoming call during automatic transfer to the second telephone terminal, In association with the third telephone terminal, the destination information of the first telephone terminal in the automatic transfer setting related to the automatic transfer is stored, and when the third telephone terminal makes the call on hold transfer, the hold transfer destination It is determined whether or not the destination information is the same as the stored destination information. If the destination information of the hold transfer destination is the same as the stored destination information, the first telephone terminal in the automatic transfer setting is set. Since the automatic transfer to the second telephone terminal that is the automatic transfer destination is restricted, the incoming call to the first telephone terminal that is the automatic transfer source is automatically transferred to the second telephone terminal that is the automatic transfer destination. After establishing a call by proxy response, the call is automatically forwarded Even first if you've hold transferred to the telephone terminal can again without requiring automatic transfer of the forwarding destination to the second telephone terminal, greatly improve the working efficiency of the telephone agency.

(Embodiment 1)
Hereinafter, a telephone exchange system showing a first embodiment relating to the telephone system of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration inside a telephone exchange system according to the first embodiment.

  A telephone exchange system 1 shown in FIG. 1 accommodates a plurality of extension terminals 2 and extension radio terminals 3 and extension terminals 2 and also accommodates extension radio terminals 3 through radio base stations 4 and a plurality of office lines. 5 is a private branch exchange (hereinafter simply referred to as “PBX”) 6, which manages the extension terminal 2 and the extension wireless terminal 3 with extension numbers.

  For example, the extension wireless terminal 3A has an extension number “1000”, the extension wireless terminal 3B has an extension number “1001”, the extension terminal 2A has an extension number “1002”, and the extension terminal 2B has an extension number “1003”.

  The PBX 6 includes a storage unit 10 that stores various information such as various programs and office line data, and a call control unit 12 that controls call control of the extension terminal 2 and the extension wireless terminal 3.

  The storage unit 10 includes a call state management table 11 that manages a call state for each extension number that identifies the extension terminal 2 and the extension wireless terminal 3. FIG. 2 is an explanatory diagram briefly showing the table contents of the call state management table 11.

  In the call state management table 11 shown in FIG. 2, for each extension number 11A for identifying the extension terminal 2 and the extension wireless terminal 3, the call state 11B of the terminal related to the extension number and, for example, the call state 11B of the terminal 11C indicating the telephone number (extension number) of the call destination terminal in the case of “medium”, and the telephone number (extension number) of the automatic transfer destination terminal when the call state of the terminal is set to automatic transfer And a transfer restriction destination 11E indicating a telephone number (extension number) of a transfer restriction destination terminal of the terminal. The automatic transfer setting includes various services such as unattended transfer, unconditional transfer, busy transfer, unanswered transfer, and out-of-service transfer.

  The call control unit 12 refers to the contents of the call state management table 11, and for example, the extension number 11A of the extension wireless terminal 3 is “1000”, the call state 11B is “busy transfer”, and the other party of the call 11C is “None”, the transfer destination 11D is the extension number “1002”, the transfer restriction destination 11E is “None”, the extension number 11A of the extension terminal 2 is “1002”, the call state 11B is “empty”, and the destination 11C "None", transfer destination 11D can recognize "None", and transfer restriction destination 11E can recognize "None".

  In addition, the call control unit 12 automatically receives an incoming call to the extension terminal 2 or extension wireless terminal 3 that is set for automatic transfer to the extension terminal 2 or extension wireless terminal 3 that is the automatic transfer destination. This proxy is used when the proxy response source extension terminal 2 or extension wireless terminal 3 makes a proxy response to the automatic transfer unit 21 for forwarding and the incoming call during automatic transfer to the extension terminal 2 or extension wireless terminal 3 that is the automatic transfer destination. In association with the extension number of the extension terminal 2 or extension wireless terminal 3 that has responded, the extension number of the extension terminal 2 or extension wireless terminal 3 that is set for automatic transfer related to the automatic transfer is designated as a transfer restriction destination in the call state management table 11. The transfer restriction destination storage control unit 22 to be stored in the mobile station and the extension terminal 2 or extension wireless terminal 3 serving as a proxy response to the incoming call during automatic transfer to the extension terminal 2 or extension wireless terminal 3 as the automatic transfer destination After establishing the call, On-hold transfer unit 23 that holds and forwards the same call on extension terminal 2 or extension wireless terminal 3 serving as a proxy response, and extension terminal 2 or extension wireless terminal 3 serving as a proxy response on-hold transfers and transmits the call on hold transfer unit 23 In this case, the automatic transfer determination unit 24 that determines whether or not the telephone number (extension number) of the hold transfer destination is the same as the extension number stored in the transfer restriction destination of the call state management table 11, and the automatic transfer determination If the extension number of the pending transfer destination is the same as the extension number of the transfer restriction destination in the section 24, the extension terminal 2 or extension radio terminal 3 that is the automatic transfer destination of the extension terminal 2 or extension radio terminal 3 that is set for automatic transfer An automatic transfer restriction unit 25 for restricting automatic transfer to the mobile phone again, and restricting automatic transfer from the extension terminal 2 or the extension wireless terminal 3 to which the automatic transfer is set to the extension terminal 2 or the extension wireless terminal 3 as the automatic transfer destination. If you want to hold transfer And a automatic transfer restriction notifying unit 26 for notifying the forwarding restriction against the extension terminal 2 or the extension wireless terminal 3 to Shin.

  For example, when the automatic transfer unit 21 detects an incoming call to the extension wireless terminal 3 for which automatic transfer is set, the automatic transfer unit 21 searches the call state management table 11 for the extension number of the automatic transfer destination 11D corresponding to the extension number 11A of the extension wireless terminal 3. The incoming call is automatically transferred to the extension terminal 2 having the extension number of the automatic transfer destination.

  For example, when the extension wireless terminal 3 that is the proxy response source makes a proxy response to an incoming call that is being automatically transferred, the transfer restriction destination storage control unit 22 automatically matches the extension number 11A of the extension wireless terminal 3 that has made the proxy response. The extension number of the extension wireless terminal 3 whose transfer is being set is stored in the transfer restriction destination 11E in the call state management table 11. For example, when the extension “1001” makes a proxy response to an incoming call during automatic transfer from the extension “1000” to the extension “1002”, the extension “1000” is associated with the extension “1001” as the transfer restriction destination 11E. It is something to remember.

  For example, when the extension wireless terminal 3 serving as the proxy response establishes a call by proxy response to the incoming call during automatic transfer to the extension terminal 2 that is the automatic transfer destination, the hold transfer unit 23 establishes a call by proxy response. The hold transfer call request is received in response to the hold transfer call operation on the side, and the call is put on hold for the extension terminal 2 or the extension wireless terminal 3 of the extension number of the hold transfer destination included in the hold transfer call request To be transferred.

  For example, when the extension wireless terminal 3 that is the proxy response source receives the hold transfer call request for making the call transfer on hold, the automatic transfer determination unit 24 receives the extension number of the hold transfer destination included in the hold transfer call request Determines whether the extension number stored in the transfer restriction destination 11E in the call state management table 11 corresponding to the extension number 11A of the extension wireless terminal 3 of the proxy response source is the same.

  If the extension number of the pending transfer destination is the same as the extension number of the transfer restriction destination, the automatic transfer restriction unit 25, for example, the extension that is the automatic transfer destination of the extension wireless terminal 3 for which automatic transfer is set When the automatic transfer determination unit 24 restricts the automatic transfer again to the terminal 2 and the extension number of the hold transfer destination is not the same as the extension number of the transfer restriction destination, the extension terminal 2 or extension of the extension number of the hold transfer destination The call is held and transferred to the wireless terminal 3.

  For example, when the automatic transfer restriction unit 25 restricts the automatic transfer again from the extension wireless terminal 3 in the automatic transfer setting to the extension terminal 2 that is the automatic transfer destination, the automatic transfer restriction unit 25 restricts the automatic transfer to the extension wireless terminal 3 that has made the pending transfer transmission. Is notified. When the automatic transfer setting is busy transfer, as an automatic transfer restriction, the busy tone is notified to the extension terminal 2 or the extension wireless terminal 3 that has sent the hold transfer, and the automatic transfer setting is absent transfer other than busy transfer or out of service area. In the case of transfer, unconditional transfer, etc., the extension terminal 2 or the extension wireless terminal 3 that sends the pending transfer is notified as an automatic transfer restriction with a voice message conveying the transfer contents.

  The telephone system described in the claims is the telephone switching system 1, the telephone terminal is the extension terminal 2 and the extension wireless terminal 3, the first telephone terminal is the extension wireless terminal 3A, the second telephone terminal is the extension terminal 2A, and the third telephone terminal is Extension wireless terminal 3B, control device PBX 6, automatic transfer means automatic transfer section 21, hold transfer means hold transfer section 23, automatic transfer storage means transfer restriction destination storage control section 22 and call state management table 11, automatic transfer determination The means corresponds to the automatic transfer determination section 24, the automatic transfer restriction means corresponds to the automatic transfer restriction section 25, and the automatic transfer restriction notification means corresponds to the automatic transfer restriction notification section 26.

  Next, the operation of the telephone exchange system 1 showing the first embodiment will be described. 3 and 4 are operation sequence diagrams showing processing operations of the entire telephone exchange system 1 related to the automatic transfer restriction processing of the first embodiment. For convenience of explanation, the extension terminal 2 or extension wireless terminal 3 for which automatic transfer is set (self-propelled transfer source) is the extension wireless terminal 3A having the extension number “1000” and the extension terminal 2 that is the automatic transfer destination of the extension wireless terminal 3A. Alternatively, the extension wireless terminal 3 is the extension terminal 2A having the extension number “1002”, and the extension terminal 2 or the extension wireless terminal 3 that is calling the extension wireless terminal 3A for which automatic forwarding is set is the extension terminal having the extension number “1003”. 2B, the proxy response source extension terminal 2 or extension radio terminal 3 that makes a proxy response to the incoming call during automatic transfer to the automatic transfer destination extension terminal 2A will be described as the extension radio terminal 3B having the extension number “1001”.

  When the extension wireless terminal 3A having the extension number “1000” shown in FIG. 3 detects a busy transfer setting operation in order to set the automatic transfer destination busy in the extension terminal 2 having the extension number “1002” (step S11), A busy transfer setting request including its own extension number and the extension number of the automatic transfer destination is transmitted to the radio base station 4 that accommodates the extension radio terminal 3 (step S12).

  The wireless base station 4 transmits a busy transfer setting request to the PBX 6 (step S13). When the PBX 6 receives the busy transfer setting request from the radio base station 4, the PBX 6 based on the extension number of the busy transfer setting target and the extension number of the automatic transfer destination included in the busy transfer setting request. The call state 11B in the call state management table 11 corresponding to the extension number “1000” is set and registered to “busy transfer” and the automatic transfer destination 11D is set to the extension number “1002” (step S14). As a result, the extension wireless terminal 3A with the extension number “1000” is set to busy transfer, and the automatic transfer destination is set to the extension number “1002”.

  Thereafter, when the extension terminal 2B having the extension number “1003” of the call source detects a call operation to the extension wireless terminal 3A having the extension number “1000” (step S15), the extension terminal 2B issues a call request including the extension number “1000”. It transmits to PBX6 (step S16).

  Upon receiving the call request, the PBX 6 transmits a ringback sound to the extension terminal 2B having the extension number “1003” of the call source (step S17). The user on the side of the extension terminal 2B that is the calling source can recognize that the call is in progress by listening to the ringback sound.

  When the PBX 6 receives a call request from the caller extension terminal 2B, the call state 11B in the call state management table 11 corresponding to the extension number “1000” of the call destination included in the call request. And the call state 11B recognizes that busy transfer is in progress (step S18).

  When the automatic transfer unit 21 in the PBX 6 recognizes that the call state 11B of the extension wireless terminal 3A with the extension number “1000” is busy, the extension number “1” of the automatic transfer destination 11D corresponding to the extension number “1000”. 1002 ″ is retrieved from the call state management table 11 (step S19).

  When the automatic transfer unit 21 searches for the extension number “1002” of the automatic transfer destination 11D corresponding to the extension number “1000”, the incoming call of the extension terminal 2B that is the calling source for the extension wireless terminal 3A of the extension number “1000” Is automatically transferred to the extension terminal 2A having the extension number "1002" as the automatic transfer destination (step S20).

  At this time, when the extension wireless terminal 3B having the extension number “1001” detects a proxy response operation in order to make a proxy response to the incoming call during the automatic transfer to the extension terminal 2 having the extension number “1002” as the automatic transfer destination (step) S21), a proxy response request is transmitted to the radio base station 4 (step S22). Further, when receiving the proxy response request, the radio base station 4 transmits the proxy response request to the PBX 6 (step S23).

  Upon receiving the proxy response request from the radio base station 4, the PBX 6 stops the incoming call during automatic transfer to the extension terminal 2B with the extension number “1002” (step S24), and passes the proxy through the transfer restriction destination storage control unit 22. The extension number “1000” of the extension wireless terminal 3A subject to automatic transfer setting related to the same incoming call is registered in the transfer restriction destination 11E in the call state management table 11 corresponding to the extension number “1001” of the response (step S25). A communication path is established between the extension terminal 2B having the extension number “1003” of the calling source and the extension wireless terminal 3B having the extension number “1001” of the proxy response source (step S26). At this time, the PBX 6 is speaking the call state 11B corresponding to the extension number “1003” of the caller extension terminal 2B, the call partner 11C is the extension number “1001”, and the proxy response source extension radio terminal 3B. While the call state 11B corresponding to the extension number “1001” is being spoken, the call contents management table 11 is registered and updated with the call partner 11C set to the extension number “1003”.

  Next, in FIG. 4, the extension wireless terminal 3B with the extension number “1001” of the proxy response source detects a hold operation during the proxy response call with the extension terminal 2B with the extension number “1003” of the call source (step S31). ), A hold request is transmitted to the radio base station 4 (step S32). Further, when receiving the hold request, the radio base station 4 transmits this hold request to the PBX 6 (step S33).

  When receiving the hold request from the radio base station 4, the PBX 6 transmits a hold sound to the extension terminal 2B having the extension number “1003” of the caller (step S34). Note that the user on the extension terminal 2B side of the caller can recognize that the call is on hold by listening to the hold sound.

  Further, the extension wireless terminal 3B with the extension number “1001” of the proxy response source, for example, transfers the held call to the extension wireless terminal 3A with the extension number “1000”, so as to execute the so-called hold transfer. When a call operation is detected (step S35), a hold transfer call request including the extension number “1000” of the hold transfer destination is transmitted to the radio base station 4 (step S36). Further, when receiving the hold transfer call request, the radio base station 4 transmits the hold transfer call request to the PBX 6 (step S37).

  When the hold transfer unit 23 in the PBX 6 receives the hold transfer call request from the radio base station 4, the hold transfer unit 23 extracts the hold transfer destination extension number “1000” included in the hold transfer call request, and this extension number “ Recognizing that the call state 11B in the call state management table 11 corresponding to "1000" is busy transferring, the automatic transfer destination extension number "1002" corresponding to the extension number "1000" is searched (step S38). As a result, the automatic transfer unit 21 prepares automatic transfer for the extension terminal 2A having the extension number “1002” as the automatic transfer destination.

  Further, the automatic transfer determination unit 24 in the PBX 6 calls a call corresponding to the extension number of the hold transfer destination included in the hold transfer call request and the extension number “1001” of the extension wireless terminal 3 that has transmitted the hold transfer call request. It is determined whether or not the extension number of the transfer restriction destination in the state management table 11 is the same.

  When the automatic transfer determination unit 24 matches the extension number of the pending transfer destination and the extension number of the transfer restriction destination in the automatic transfer determination unit 24 (step S39), the automatic transfer restriction unit 25 in the PBX 6 prepares the automatic transfer in step S38. Automatic transfer to the number “1002” is restricted (step S40). As a result, in response to the hold transfer call request to the extension wireless terminal 3A having the extension number “1000”, the call is automatically transferred again to the extension terminal 2B having the extension number “1002” which is the automatic transfer destination of the extension wireless terminal 3A. Can be avoided.

  Furthermore, when the automatic transfer restriction notifying unit 26 in the PBX 6 restricts automatic transfer to the extension number “1002” in the automatic transfer restricting unit 25 in step S40, the automatic transfer restriction notifying unit 26 wirelessly transmits a busy tone to notify the automatic transfer restriction. It transmits to the extension wireless terminal 3B of the extension number “1001” of the proxy response that sent the hold transfer call request via the base station 4 (step S41). As a result, the user on the extension wireless terminal 3B side can recognize that the automatic transfer is restricted by listening to the busy tone.

  If the automatic transfer determination unit 24 does not match the extension number of the reserved transfer destination with the extension number of the transfer restriction destination, the automatic transfer unit 21 in the PBX 6 prepares the automatic transfer in step S38. The automatic transfer to the extension number “1002” is executed through the automatic transfer unit 21 without restricting the automatic transfer to “1002”.

  3 and 4, the operation related to the busy transfer setting has been described, but other automatic transfer settings (absent transfer, unconditional transfer, unanswered transfer, out-of-service transfer, etc.) are the same as the busy transfer setting. In this case, a voice message indicating the content of the transfer restriction is sent instead of sending the busy tone in step S41.

  According to the first embodiment, for example, when the extension wireless terminal 3B serving as the proxy responds to the incoming call during the automatic transfer from the extension wireless terminal 3A serving as the automatic transfer source to the extension terminal 2A serving as the automatic transfer destination, In association with the extension number of the extension wireless terminal 3B, the extension number of the extension wireless terminal 3A of the automatic transfer source is stored in the transfer restriction destination 11E in the call state management table 11, and the extension wireless terminal 3B of the proxy response source When a call is placed on hold and transferred, it is determined whether or not the extension number of the hold transfer destination is the same as the extension number stored in the transfer restriction destination 11E, and the extension number of the hold transfer destination is stored in the transfer restriction destination 11E. If the extension number is the same as the internal extension number, the automatic transfer again to the extension terminal 2A, which is the automatic transfer destination of the extension wireless terminal 3A for which automatic transfer is being set, is restricted. Incoming calls to During automatic transfer to the extension terminal 2A as the transfer destination, after establishing a call by proxy response to the incoming call, even if the call is held and transferred to the extension wireless terminal 3A as the automatic transfer source, it is automatically transferred again. The work efficiency of the telephone agent can be greatly improved without requiring automatic transfer to the extension terminal 2A.

  In addition, according to the first embodiment, for example, when restricting automatic transfer again from the extension wireless terminal 3A for which automatic transfer is set to the extension terminal 2A that is the automatic transfer destination, the extension of the proxy response source that issued the pending transfer Since the automatic transfer restriction is notified to the wireless terminal 3B, the user on the extension wireless terminal 3B side who has made the pending transfer call again from the extension wireless terminal 3A of the automatic transfer source to the extension terminal 2B of the automatic transfer destination. Recognize regulations related to automatic transfer.

  Further, according to the first embodiment, for example, when the automatic transfer setting of the extension wireless terminal 3A is busy transfer, the extension wireless terminal 3B that is the proxy response source that has sent the busy sound as the automatic transfer restriction notification and sends the hold transfer. Therefore, the user on the extension wireless terminal 3B side listens to the busy tone and repeats the busy transfer from the extension wireless terminal 3A of the automatic transfer source to the extension terminal 2A of the automatic transfer destination. Recognize the regulations involved.

  Further, according to the first embodiment, for example, when the automatic transfer setting of the extension wireless terminal 3A is a transfer other than the busy transfer, the voice message indicating the content of the transfer restriction as the automatic transfer restriction notification is transmitted as a proxy for the pending transfer. Since the response is made to the extension wireless terminal 3B of the response source, the user on the extension wireless terminal 3B side listens to the voice message and transfers from the extension wireless terminal 3A of the automatic transfer source to the extension terminal 2A of the automatic transfer destination. It is possible to recognize regulations related to automatic transfer again.

  In the first embodiment, the automatic transfer source is described as the extension wireless terminal 3A, the automatic transfer destination as the extension terminal 2A, the proxy response source as the extension wireless terminal 3B, and the calling source as the extension terminal 2B. It is not limited to these, and it goes without saying that the same effect can be obtained even in various combinations.

  In the first embodiment, the telephone switching system 1 including the PBX 6 that accommodates the extension terminal 2 and the extension wireless terminal 3 has been described as an example. However, the SIP extension terminal and the SIP extension wireless terminal are IP Since a similar effect can be obtained for a SIP telephone system including a SIP server managed by an address, a description will be given below as a second embodiment.

(Embodiment 2)
FIG. 5 is a block diagram showing a schematic configuration inside the SIP telephone system 1A showing the second embodiment.

  The SIP telephone system 1A shown in FIG. 5 includes an IP network 7, a plurality of SIP extension terminals 20 having a communication interface function with the IP network 7, a plurality of SIP extension radio terminals 30, and the SIP extension radio terminal 30. A wireless base station 8A that accommodates wirelessly, a base station concentration gateway 8 that accommodates the wireless base station 8A, a communication interface function with the IP network 7, a station line 5, and an IP network 7 The PSTN gateway 9 having a communication interface function, the SIP extension terminal 20, the SIP extension radio terminal 30, the base station concentration gateway 8 and the PSTN gateway 9 are managed by IP addresses, and the SIP extension terminal 20, the SIP extension radio terminal 30 and A SIP server 6A for controlling the call between the office lines 5 That.

  The SIP server 6A manages the IP addresses of the SIP extension terminal 20 and the SIP extension wireless terminal 30 using extension numbers.

  For example, the SIP extension wireless terminal 30A has an extension number “2000”, the SIP extension wireless terminal 30B has an extension number “2001”, the SIP extension terminal 20A has an extension number “2002”, and the SIP extension terminal 20B has an extension number “2003”. .

  The SIP server 6A includes a server-side storage unit 10A that stores various information such as various programs and station line data, and a server-side call control unit 12A that manages call control of the SIP extension terminal 20 and the SIP extension wireless terminal 30. is doing.

  The server-side storage unit 12A includes a call state management table 13 that manages the call state for each extension number that identifies the SIP extension terminal 20 and the SIP extension wireless terminal 30. FIG. 6 is an explanatory diagram briefly showing the contents of the call state management table 13.

  The call state management table 13 shown in FIG. 6 includes, for each extension number 13A for identifying the SIP extension terminal 20 and the SIP extension wireless terminal 30, the call state 13B of the terminal related to the extension number and, for example, the call state 13B of the terminal. The other party 13C showing the telephone number (extension number) of the other party's terminal in the case of “busy” and the telephone number of the automatic forwarding destination terminal in the case where the call state 13B of the terminal is set to automatic forwarding ( A transfer destination 13D indicating an extension number) and a transfer restriction destination 13E indicating a telephone number (extension number) of a transfer restriction destination terminal of the same terminal are managed. The automatic transfer setting includes various services such as unattended transfer, unconditional transfer, busy transfer, unanswered transfer, and out-of-service transfer.

  The server-side call control unit 12A refers to the contents of the call state management table 13, and for example, the extension number 13A of the SIP extension wireless terminal 30A is “2000”, the call state 13B is “out-of-service transfer”, the call The destination 13C is “None”, the transfer destination 13D is the extension number “2002”, the transfer restriction destination 13E is “None”, the extension number 13A of the SIP extension terminal 20A is “2002”, its call state 13B is “free”, the call The destination 13C can recognize “None”, the transfer destination 13D can recognize “None”, and the transfer restriction destination 13E can recognize “None”.

  The server-side call control unit 12A also sends the incoming call to the SIP extension terminal 20 or SIP extension wireless terminal 30 that is set for automatic transfer among the SIP extension terminal 20 and the SIP extension wireless terminal 30 to the SIP extension terminal 20 that is the automatic transfer destination. Alternatively, the automatic transfer unit 21A that automatically transfers to the SIP extension wireless terminal 30, and the SIP extension terminal 20 or SIP that is the proxy response to an incoming call during automatic transfer to the SIP extension terminal 20 or SIP extension wireless terminal 30 that is the automatic transfer destination When the extension wireless terminal 30 makes a proxy response, the SIP extension terminal 20 or the SIP extension wireless being set for automatic transfer related to the automatic transfer is associated with the extension number of the SIP extension terminal 20 or the SIP extension wireless terminal 30 that has made the proxy response. A transfer restriction destination storage control unit 22A for storing the extension number of the terminal 30 in the transfer restriction destination 13E in the call state management table 13, and automatic transfer After the SIP extension terminal 20 or SIP extension wireless terminal 30 as a proxy response source establishes a call by proxy response to an incoming call during automatic transfer to the SIP extension terminal 20 or SIP extension wireless terminal 30, the proxy response source SIP extension terminal 20 or SIP extension wireless terminal 30 holds and forwards the same call on hold 23A, and on hold transfer unit 23A, proxy extension source SIP extension terminal 20 or SIP extension wireless terminal 30 holds and forwards the call. In this case, the automatic transfer determination unit 24A for determining whether or not the telephone number (extension number) of the hold transfer destination is the same as the extension number stored in the transfer restriction destination 13E of the call state management table 13; When the extension number of the pending transfer destination is the same as the extension number of the transfer restriction destination 13E in the transfer determination unit 24A, the SIP extension terminal 20 or SIP extension wireless terminal that is set for automatic transfer Automatic transfer restriction unit 25A that restricts automatic transfer to the SIP extension terminal 20 or SIP extension wireless terminal 30 that is the automatic transfer destination of the automatic transfer destination 30 and automatic transmission from the SIP extension terminal 20 or SIP extension wireless terminal 30 that is set for automatic transfer. Automatic transfer restriction that notifies automatic transfer restriction to the SIP extension terminal 20 or SIP extension wireless terminal 30 that has made a pending transfer when restricting automatic transfer again to the SIP extension terminal 20 or SIP extension wireless terminal 30 that is the transfer destination And a notification unit 26A.

  For example, when the automatic transfer unit 21A detects an incoming call to the SIP extension wireless terminal 30 that is set for automatic transfer, the automatic transfer unit 21A sets the extension number of the automatic transfer destination 13D corresponding to the extension number 13A of the SIP extension wireless terminal 30 to the call state management table 13. And the incoming call is automatically transferred to the SIP extension terminal 20 having the extension number of the automatic transfer destination 13D.

  For example, when the proxy extension source SIP extension wireless terminal 30 makes a proxy response to an incoming call during automatic transfer, the transfer restriction destination storage control unit 22A associates it with the extension number 13A of the SIP extension wireless terminal 30 that has made the proxy response. The extension number of the SIP extension wireless terminal 30 for which automatic transfer is set is stored in the transfer restriction destination 13E in the call state management table 13.

  For example, when the SIP extension wireless terminal 30 as the proxy response source establishes a call by proxy response to an incoming call during automatic transfer to the SIP extension terminal 20 that is the automatic transfer destination, the hold transfer unit 23A sets the SIP extension that has responded as a proxy In response to a hold transfer call operation on the wireless terminal 30 side, a hold transfer call request is received, and the SIP extension terminal 20 or SIP extension radio terminal 30 of the extension number of the hold transfer destination included in the hold transfer call request is sent to The call is transferred on hold.

  For example, when the SIP extension wireless terminal 30 that is the proxy response source receives the hold transfer call request for sending the call on hold, the automatic transfer determination unit 24A receives the hold transfer destination extension included in the hold transfer call request. It is determined whether or not the extension number stored in the transfer restriction destination 13E in the call state management table 13 corresponding to the extension number 13A of the SIP extension wireless terminal 30 of the proxy response source is the same.

  When the extension number of the reserved transfer destination is the same as the extension number of the transfer restriction destination 13E in the automatic transfer determination unit 24A, the automatic transfer restriction unit 25A uses, for example, the automatic transfer destination of the SIP extension wireless terminal 30 in which automatic transfer is set. When automatic transfer to a certain SIP extension terminal 20 or SIP extension wireless terminal 30 is restricted again, and the extension number of the hold transfer destination is not the same as the extension number of the transfer restriction destination 13E in the automatic transfer determination unit 24A, hold transfer The call is held and transferred to the SIP extension terminal 20 or the SIP extension wireless terminal 30 having the previous extension number.

  For example, when the automatic transfer restriction unit 25A restricts the automatic transfer again from the SIP extension wireless terminal 30 in the automatic transfer setting to the SIP extension terminal 20 that is the automatic transfer destination, the automatic transfer restriction unit 25A An automatic transfer restriction is notified. If the automatic transfer setting is busy transfer, the busy signal is notified to the SIP extension terminal 20 or the SIP extension wireless terminal 30 as the automatic transfer restriction and the automatic transfer setting is absent transfer other than the busy transfer. In the case of out-of-service transfer, unconditional transfer, etc., a voice message conveying the content of the transfer is notified to the SIP extension terminal 20 or SIP extension wireless terminal 30 that has sent the pending transfer as automatic transfer restriction.

  The telephone system described in the claims is the SIP telephone system 1A, the telephone terminals are the SIP extension terminal 20 and the SIP extension radio terminal 30, the first telephone terminal is the SIP extension radio terminal 30A, the second telephone terminal is the SIP extension terminal 20A, The three telephone terminals are the SIP extension wireless terminal 30B, the control device is the SIP server 6A, the automatic transfer means is the automatic transfer section 21A, the hold transfer means is the hold transfer section 23A, the automatic transfer storage means is the transfer restriction destination storage control section 22A, and the call state The management table 13, automatic transfer determination means corresponds to an automatic transfer determination section 24A, automatic transfer restriction means corresponds to an automatic transfer restriction section 25A, and automatic transfer restriction notification means corresponds to an automatic transfer restriction notification section 26A.

  Next, the operation of the SIP telephone system 1A showing the second embodiment will be described. FIG. 7 and FIG. 8 are operation sequence diagrams showing the entire processing operation of the SIP telephone system 1A related to the automatic transfer restriction processing of the second embodiment. For convenience of explanation, the SIP extension terminal 20 or SIP extension radio terminal 30 that is set for automatic transfer is designated as the SIP extension radio terminal 30A with the extension number “2000”, the SIP extension terminal 20 that is the automatic transfer destination of the SIP extension radio terminal 30A, or The SIP extension wireless terminal 30 is called the SIP extension terminal 20A with the extension number "2002", and the SIP extension terminal 20 or the SIP extension wireless terminal 30 that is the call originator that calls the SIP extension wireless terminal 30A for which automatic forwarding is set is called the extension "2003". The SIP extension terminal 20B, the SIP extension terminal 20 or the SIP extension wireless terminal 30 that makes a proxy response to the incoming call during the automatic transfer to the SIP extension terminal 20A of the automatic transfer destination is the SIP extension with the extension number "2001". The wireless terminal 30B will be described.

  When the SIP extension wireless terminal 30A having the extension number “2000” shown in FIG. 7 detects an out-of-service transfer setting operation to set the automatic transfer destination outside the service area to the SIP extension terminal 20B having the extension number “2002” (step S51). The out-of-service transfer setting request including its own extension number and the extension number of the automatic transfer destination is transmitted to the base station concentration gateway 8 that accommodates the radio base station 8A that accommodates the SIP extension radio terminal 30A (step S52).

  The base station concentration gateway 8 transmits an out-of-service transfer setting request to the SIP server 6A (step S53). When the SIP server 6A receives the out-of-service transfer setting request from the base station concentration gateway 8, the SIP server 6A is based on the extension number of the out-of-service transfer setting target and the extension number of the automatic transfer destination included in the out-of-service transfer setting request. The call state 13B in the call state management table 13 corresponding to the extension number “2000” is set and registered as “out of service transfer” and the automatic transfer destination 13D is set as the extension number “2002” (step S54). As a result, the SIP extension wireless terminal 30A with the extension number “2000” is set to out-of-service transfer, and the automatic transfer destination 13D is set to the extension number “2002”.

  Thereafter, when the SIP extension terminal 20B having the extension number “2003” of the call source detects a call operation to the SIP extension wireless terminal 30A having the extension number “2000” (step S55), the SIP extension terminal 20B generates an INVITE including the extension number “2000”. It transmits to the SIP server 6A (step S56). The SIP extension terminal 20B with the caller extension number “2003” outputs a ringback sound in response to a response message corresponding to INVITE from the SIP server 6A (step S57). The user on the SIP extension terminal 20 side of the caller can recognize that the call is being made by listening to the ringback sound.

  When the SIP server 6A receives the INVITE from the calling SIP extension terminal 20B, the SIP server 6A displays the call state 13B in the call state management table 13 corresponding to the extension number “2000” of the call destination included in the INVITE. A search is made to recognize that the same call state 13B is being transferred out of service area (step S58).

  When the automatic transfer unit 21A in the SIP server 6A recognizes that the call state 13B of the SIP extension wireless terminal 30A having the extension number “2000” is being transferred out of service area, the extension of the automatic transfer destination 13D corresponding to the extension number “2000” The number “2002” is searched from the call state management table 13 (step S59).

  When the automatic transfer unit 21A searches for the extension number “2002” of the automatic transfer destination 13D corresponding to the extension number “2000”, the calling extension SIP terminal 20B of the SIP extension wireless terminal 30A with the extension number “2000” The incoming call is designated as INVITE, and is automatically transferred to the SIP extension terminal 20A having the extension number "2002" as the automatic transfer destination (step S60).

  At this time, when the SIP extension wireless terminal 30 having the extension number “2001” detects a proxy response operation to make a proxy response to the INVITE being automatically transferred to the SIP extension terminal 20A having the extension number “2002” as the automatic transfer destination ( In step S61, a proxy response request is transmitted to the base station concentration gateway 8 (step S62). Further, when receiving the proxy response request, the base station concentration gateway 8 transmits 200OK to the SIP server 6A in response to INVITE (step S63).

  Upon receiving 200 OK from the base station concentration gateway 8, the SIP server 6A transmits CANCEL for canceling INVITE during automatic transfer to the SIP extension terminal 20A having the extension number “2002” to the SIP extension terminal 20A having the extension number “2002”. (Step S64).

  Further, the SIP server 6A, through the transfer restriction destination storage control unit 22A, sets the SIP extension subject to automatic transfer setting related to the INVITE to the transfer restriction destination 13E in the call state management table 13 corresponding to the extension number “2001” of the proxy response. The extension number “2000” of the wireless terminal 30A is registered (step S65), and 200 OK is transmitted to the SIP extension terminal 20B having the extension number “2003” of the call source (step S66). A communication path is established between the SIP extension terminal 20B with the number “2003” and the SIP extension wireless terminal 30B with the extension number “2001” of the proxy response source (step S67). At this time, the SIP server 6A is speaking the call state 13B corresponding to the extension number “2003” of the caller SIP extension terminal 20B, the call partner 13C is the extension number “2001”, and the proxy response source SIP While the call state 13B corresponding to the extension number “2001” of the extension wireless terminal 30B is busy, the contents of the call state management table 13 are registered and updated while the other party 13C is set to the extension number “2003”.

  Next, in FIG. 8, when the SIP extension wireless terminal 30B with the extension number “2001” of the proxy response source detects a hold operation during the proxy response call with the SIP extension terminal 20B with the extension number “2003” of the call source ( In step S71, a hold request is transmitted to the base station concentration gateway 8 (step S72). Further, when receiving the hold request, the base station concentration gateway 8 transmits re-INVITE to the SIP server 6A (step S73).

  When the SIP server 6A receives the re-INVITE from the base station concentration gateway 8, the SIP server 6A transmits the re-INVITE to the SIP extension terminal 20B having the extension number “2003” of the caller (step S74).

  When receiving the re-INVITE, the SIP extension terminal 20B having the caller extension number “2003” outputs a holding tone (step S75) and transmits 200OK to the SIP server 6A (step S76). Note that the user on the SIP extension terminal 20B side of the caller can recognize that the call is on hold by listening to the hold sound.

  Upon receiving 200OK from the SIP extension terminal 20B, the SIP server 6A transmits 200OK to the base station concentration gateway 8 (step S77).

  Thereafter, the SIP extension wireless terminal 30B having the extension number “2001” as the proxy response source further performs so-called hold transfer, for example, transferring the call on hold to the SIP extension wireless terminal 30A having the extension number “2000”. When the hold transfer call operation is detected (step S78), a hold transfer call request including the extension number “2000” of the hold transfer destination is transmitted to the base station concentration gateway 8 (step S79). Further, when receiving the hold transfer call request, the base station concentration gateway 8 transmits INVITE including the extension number of the hold transfer destination to the SIP server 6A (step S80).

  When the hold transfer unit 23A in the SIP server 6A receives the INVITE from the base station concentration gateway 8, the hold transfer unit 23A extracts the extension number “2000” of the hold transfer destination included in the INVITE, and corresponds to this extension number “2000”. Recognizing that the call state 13B in the call state management table 13 is out-of-service transfer, the automatic transfer destination extension number “2002” corresponding to the extension number “2000” is searched (step S81). As a result, the automatic transfer unit 21A prepares automatic transfer to the SIP extension terminal 20A having the extension number “2002” of the automatic transfer destination.

  Further, the automatic transfer determination unit 24A in the SIP server 6A calls the extension state “2001” of the SIP extension wireless terminal 30B that has transmitted the hold transfer call request and the extension number of the hold transfer destination included in the INVITE. It is determined whether or not the extension number of the transfer restriction destination 13E in the management table 13 is the same.

  The automatic transfer restriction unit 25A in the SIP server 6A performs automatic transfer in step S81 when the automatic transfer determination unit 24A matches the extension number of the reserved transfer destination and the extension number of the transfer restriction destination 13E (step S82). The automatic transfer to the prepared extension number “2002” is restricted (step S83). As a result, in response to the hold transfer call request to the SIP extension wireless terminal 30A having the extension number “2000”, the SIP extension terminal 20A having the extension number “2002”, which is the automatic transfer destination of the SIP extension wireless terminal 30A, is automatically reactivated. It is possible to avoid a situation where data is transferred.

  Furthermore, when the automatic transfer restriction notifying unit 26A in the SIP server 6A restricts automatic transfer to the extension number “2002” in the automatic transfer restricting unit 25A in step S83, the automatic transfer restriction notifying unit 26A A voice message indicating the restriction is transmitted to the SIP extension wireless terminal 30B having the extension number “2001” of the proxy response that sent the hold transfer call request via the base station concentrator gateway 8 (step S84). As a result, the user on the SIP extension wireless terminal 30B side can recognize that automatic transfer outside the service area is restricted by listening to the voice message.

  The automatic transfer unit 21A in the SIP server 6A prepares automatic transfer in step S81 when the automatic transfer determination unit 24A does not match the extension number of the reserved transfer destination and the extension number of the transfer restriction destination. The automatic transfer to the extension number “2002” is executed through the automatic transfer unit 21A without restricting the automatic transfer to the extension number “2002”.

  7 and 8, the operation related to the out-of-service transfer setting has been described. However, the same processing as the out-of-service transfer setting is performed for other automatic transfer settings (absent transfer, unconditional transfer, unacknowledged transfer, etc.). In the voice message transmission in step S41, a voice message indicating the contents of the transfer restriction is transmitted, and in the case of busy transfer setting, the busy sound is transmitted.

  According to the second embodiment, for example, the proxy extension source SIP extension wireless terminal 30B acts as a proxy for an incoming call during automatic transfer from the automatic transfer source SIP extension wireless terminal 30A to the automatic transfer destination SIP extension terminal 20A. When the response is made, the extension number of the SIP extension wireless terminal 30A as the automatic transfer source is stored in the transfer restriction destination 13E in the call state management table 11 in association with the extension number of the SIP extension wireless terminal 30B, and the proxy response source When the SIP extension wireless terminal 30B makes a call transfer on hold, it is determined whether or not the extension number of the hold transfer destination is the same as the extension number stored in the transfer restriction destination 13E, and the extension number of the hold transfer destination is determined. If the extension number stored in the transfer restriction destination 13E is the same as the extension number stored in the transfer restriction destination 13E, the automatic extension is again performed to the SIP extension terminal 20A that is the automatic transfer destination of the SIP extension wireless terminal 30A that is set for automatic transfer. Since the incoming call to the SIP extension wireless terminal 30A as the automatic transfer source is automatically transferred to the SIP extension terminal 20A as the automatic transfer destination during the automatic transfer, the call is established by answering the incoming call as a proxy. Even if the transfer is suspended to the automatic extension source SIP extension wireless terminal 30A, the automatic operation to the SIP extension terminal 20A as the automatic transfer destination is not required again, and the work efficiency of the telephone agent can be greatly improved. it can.

  Further, according to the second embodiment, for example, when restricting automatic transfer again from the SIP extension wireless terminal 30A for which automatic transfer is being set up to the SIP extension terminal 20A as the automatic transfer destination, the proxy response source that has issued the pending transfer Since the automatic extension restriction is notified to the SIP extension wireless terminal 30B of the SIP extension wireless terminal 30B, the user on the SIP extension wireless terminal 30B side that has made the pending transfer call forwards the SIP extension wireless terminal 30A as the automatic transfer destination to the SIP extension of the automatic transfer destination. It is possible to recognize the regulations related to the automatic transfer again to the terminal 20B.

  In addition, according to the second embodiment, for example, when the automatic transfer setting of the SIP extension wireless terminal 30A is busy transfer, the SIP extension wireless of the proxy response source that has transmitted the busy sound as the automatic transfer restriction notification and the hold transfer transmission. Since the notification is made to the terminal 30B, the user on the SIP extension wireless terminal 30B side listens to the busy tone, and again from the SIP extension wireless terminal 30A of the automatic transfer source to the SIP extension terminal 20A of the automatic transfer destination. You can recognize the regulations related to the busy transfer.

  Further, according to the second embodiment, for example, when the automatic transfer setting of the SIP extension wireless terminal 30A is a transfer other than the busy transfer, a voice message indicating the transfer restriction content is transmitted as a hold transfer as an automatic transfer restriction notification. Since the proxy response source SIP extension wireless terminal 30B is notified, the user on the SIP extension wireless terminal 30B side listens to the voice message and automatically transfers the SIP extension wireless terminal 30A from the SIP extension wireless terminal 30A. It is possible to recognize the regulations related to the automatic transfer again to the extension terminal 20A.

  In the second embodiment, the automatic transfer source is the SIP extension wireless terminal 30A, the automatic transfer destination is the SIP extension terminal 20A, the proxy response source is the SIP extension wireless terminal 30B, and the calling source is the SIP extension terminal 20B. Although described, it is not limited to these, and it goes without saying that the same effect can be obtained even in various combinations.

  According to the telephone system of the present invention, when a hold transfer call is received from the third telephone terminal as the proxy response source to the first telephone terminal involved in the call, the second telephone which is the automatic transfer destination of the first telephone terminal Since the automatic transfer to the terminal is restricted again, the incoming call to the first telephone terminal of the automatic transfer source is automatically transferred to the second telephone terminal of the automatic transfer destination, and the call is answered by proxy response. Even if the call is put on hold and transferred to the first telephone terminal of the automatic transfer source after the establishment, the work efficiency of the telephone agent is improved without requiring the automatic transfer to the second telephone terminal of the automatic transfer destination again. Since it can be greatly improved, it is useful for a telephone exchange system including a PBX that accommodates a plurality of telephone terminals, for example.

The block diagram which shows schematic structure inside the telephone switching system which shows 1st Embodiment in connection with the telephone system of this invention Explanatory drawing which shows the table content of the call state management table concerning 1st Embodiment briefly. The operation | movement sequence diagram which shows the processing operation of the whole telephone switching system in connection with the automatic transfer regulation process of 1st Embodiment The operation | movement sequence diagram which shows the processing operation of the whole telephone switching system in connection with the automatic transfer regulation process of 1st Embodiment The block diagram which shows schematic structure inside the SIP telephone system which shows 2nd Embodiment in connection with the telephone system of this invention Explanatory drawing which shows the table content of the call state management table in connection with 2nd Embodiment briefly The operation | movement sequence diagram which shows the processing operation of the whole SIP telephone system in connection with the automatic transfer control process of 2nd Embodiment The operation | movement sequence diagram which shows the processing operation of the whole SIP telephone system in connection with the automatic transfer control process of 2nd Embodiment

Explanation of symbols

1 Telephone exchange system (telephone system)
1A SIP telephone system (telephone system)
2 Extension terminals (telephone terminals)
2A extension terminal (second telephone terminal)
3. Extension wireless terminal (telephone terminal)
3A extension wireless terminal (first telephone terminal)
3B extension wireless terminal (third telephone terminal)
6 PBX (control device)
11 Call state management table 13 Call state management table 20 SIP extension terminal 20A SIP extension terminal (second telephone terminal)
21, 21A Automatic transfer unit (automatic transfer means)
22, 22A Transfer restriction destination storage control unit (automatic transfer storage means)
23, 23A Hold transfer unit (hold transfer means)
24, 24A Automatic transfer determination unit (automatic transfer determination means)
25,25A Automatic transfer restriction section (automatic transfer restriction means)
26, 26A Automatic transfer restriction notification unit (automatic transfer restriction notification means)
30 SIP extension wireless terminal (telephone terminal)
30A SIP extension wireless terminal (first telephone terminal)
30B SIP extension wireless terminal (third telephone terminal)

Claims (8)

A plurality of telephone terminals are accommodated and connected, and an incoming call to the first telephone terminal for which automatic forwarding is set is automatically forwarded to the second telephone terminal of the automatic forwarding destination among the plurality of telephone terminals, and the second telephone terminal A telephone system in which the third telephone terminal as a proxy response source establishes a call by proxy response to an incoming call during automatic transfer to the call and then holds the call on hold at the third telephone terminal;
When a call on hold transfer to the first telephone terminal involved in the call is received from the third telephone terminal of the proxy response source, automatic re-transmission to the second telephone terminal that is an automatic transfer destination of the first telephone terminal A telephone system characterized by restricting transfer. A control device for accommodating and connecting a plurality of telephone terminals is provided, and this control device receives incoming calls from the plurality of telephone terminals to the first telephone terminal set for automatic forwarding to the second telephone terminal as the automatic forwarding destination. An automatic transfer means for automatically transferring the call, and the third telephone terminal as a proxy response source establishes a call by proxy response to an incoming call during automatic transfer to the second telephone terminal. A telephone system having a holding transfer means for holding and transferring
The controller is
When the third telephone terminal serving as the proxy responds to the incoming call during the automatic transfer to the second telephone terminal, the automatic response setting related to the automatic transfer is being performed in association with the third telephone terminal. Automatic transfer storage means for storing destination information of the first telephone terminal;
When the third telephone terminal makes a call transfer on hold in the hold transfer means, it is determined whether or not the destination information of the hold transfer destination is the same as the address information stored in the automatic transfer storage means Automatic transfer determination means;
If the destination information of the hold transfer destination is the same as the destination information stored in the automatic transfer storage means in the automatic transfer determination means, the automatic transfer destination of the first telephone terminal being set for the automatic transfer is An automatic transfer restricting means for restricting automatic transfer to the second telephone terminal again. The controller is
When restricting automatic transfer again from the first telephone terminal to which the automatic transfer is set to the second telephone terminal of the automatic transfer destination, the automatic transfer restriction is notified to the third telephone terminal that has made the hold transfer transmission. 3. The telephone system according to claim 2, further comprising automatic transfer restriction notification means. The automatic transfer restriction informing means is
4. When the automatic transfer setting of the first telephone terminal is busy transfer, a busy sound is notified to the third telephone terminal that has made a call transfer on hold as the automatic transfer restriction notification. The telephone system described. The automatic transfer restriction informing means is
When the automatic transfer setting of the first telephone terminal is a transfer other than busy transfer, a voice message indicating the transfer restriction content is notified to the third telephone terminal that has made the hold transfer as the automatic transfer restriction notification. The telephone system according to claim 3. The controller is
3. The telephone system according to claim 2, wherein the telephone system corresponds to a private branch exchange that performs call control by accommodating the plurality of telephone terminals in a wired or wireless manner. The controller is
3. The telephone system according to claim 2, wherein the telephone system corresponds to a server that manages the plurality of telephone terminals with IP addresses and performs call control by accommodating the plurality of telephone terminals in a wired or wireless manner. A plurality of telephone terminals are accommodated and connected, and among the plurality of telephone terminals, incoming calls to the first telephone terminal set for automatic forwarding are automatically forwarded to the second telephone terminal of the automatic forwarding destination, to the second telephone terminal A method for restricting automatic transfer of a telephone system in which a third telephone terminal as a proxy response source establishes a call by proxy response to an incoming call during automatic transfer, and then holds and transfers the call on hold at the third telephone terminal. ,
When the third telephone terminal as the proxy response source responds to the incoming call during the automatic transfer to the second telephone terminal, the third telephone terminal in the automatic transfer setting related to the automatic transfer is associated with the third telephone terminal. An automatic transfer storing step for storing destination information of one telephone terminal;
An automatic transfer determination step of determining whether or not the destination information of the hold transfer destination is the same as the destination information stored in the automatic transfer storage step when the third telephone terminal makes the call on hold transfer;
In the automatic transfer determination step, when the destination information of the hold transfer destination is the same as the destination information stored in the automatic transfer storage step, the first transfer destination of the first telephone terminal being set in the automatic transfer is set. 2. An automatic transfer restriction method for a telephone system, comprising an automatic transfer restriction step for restricting automatic transfer to two telephone terminals.

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