JP2019129377A - Telephone system, telephone control device, and telephone terminal - Google Patents

Abstract

To cause a target proxy response destination to receive a proxy response without performing prior setting or response to an incoming call, and without performing a complicated operation.SOLUTION: In a telephone terminal 3 (1) where an individual incoming call has occurred, a user is notified of an incoming call addressed to the own device through a ringer 307 and a display 312, and an input of proxy response information including identification information of another telephone terminal to be a new response destination on behalf of the own device is received through an operation input unit 313. In the telephone terminal 3 (1), when input of proxy response information is received, a proxy response request including proxy response information is formed by a proxy response processing unit 321 and a packet processing unit 303, and transmitted to the other telephone terminal to be the new response destination through a SIP server by a LAN I/F 302.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a telephone system configured by connecting a plurality of telephone terminals to a telephone control apparatus such as a SIP (Session Initiation Protocol) server, a telephone control apparatus used in the telephone system, and a telephone terminal.

  In an office, such as a company, a business phone system (button telephone, which accommodates a plurality of telephone terminals in a telephone control device to which one or more outside lines are connected, and allows external and internal calls through these telephone terminals. System is being built and used. In the business phone system, a so-called individual incoming call function such as a dial-in function and a direct-in-dial function has been conventionally realized.

  The dial-in function makes a contract with a service provided by the telephone company in advance, and assigns an additional telephone number different from the original representative telephone number to the subscriber contract line used by the telephone controller on the receiving side. . Then, when an additional telephone number is notified from the telephone network at the time of an incoming call from an outside line, the telephone control device is a function of individually calling an extension telephone terminal corresponding to the additional telephone number. Also, the direct in-dial function automatically responds to an incoming call to an outside telephone number in the telephone control device, and receives an extension (extension telephone number) transmitted from the originating telephone terminal, and the extension The extension telephone terminal corresponding to is individually received.

  With these functions, it is possible to directly call the target party without having to make a call to the representative telephone number and have the target party take over. Then, when the individual incoming call function is available, the incoming call forwarding function is further made available, and when there is no response for a predetermined time at the time of incoming call forwarding, the transfer setting device is connected to the answering machine to operate the answering machine recording function. An invention is disclosed in Patent Document 1. Further, Patent Document 2 discloses a technique for switching to a group incoming call when there is no response for a certain time during an individual incoming call.

Japanese Patent Laid-Open No. 10-51553 Japanese Patent Laid-Open No. 6-244958

  However, the inventions described in Patent Document 1 and Patent Document 2 described above become possible by setting in the telephone control device in advance how to respond to an individual incoming call when absent. It is. Therefore, depending on the situation at the time, such as the destination of the caller and the circumstances of the person, it may be better for the person in charge other than you to respond to the incoming call. There is a case where it is necessary to respond to the incoming call once and quick response is not possible.

  In view of the above, the present invention can make a proxy response to a target proxy response destination without performing prior settings or responding to an incoming call, and without performing complicated operations. The purpose is to do so.

In order to solve the above problems, the telephone system of the invention according to claim 1 is
A telephone system comprising a plurality of telephone terminals connected to a telephone control device, comprising:
A telephone terminal that is one of the plurality of telephone terminals and that is notified of an incoming call addressed to itself.
An incoming call notification means for notifying the user when an incoming call directed to his / her own device occurs,
Identification information of another telephone terminal that is another one of the plurality of telephone terminals and should be a new response destination on behalf of the own terminal when notified that there is an incoming call through the incoming notification means. Accepting means for accepting input of proxy response information including
Forming means for forming a proxy response request including the proxy response information when the proxy response information is received through the receiving means;
Transmitting means for transmitting the proxy response request formed by the forming means to the other telephone terminal through the telephone control device;
The telephone control device
And a provision unit that provides the proxy response request to the other telephone terminal specified by the identification information of the proxy response information included in the proxy response request when the proxy response request is received,
The other telephone terminal to be the new response destination is
Informing means for notifying the user after indicating that the proxy response request is provided to the own device,
And a proxy response operation receiving unit that receives a response operation from the user when the notification unit reports that there is the proxy response request.

  According to the telephone system of the first aspect of the present invention, the telephone system is configured by connecting a plurality of telephone terminals to the telephone control device. Then, one of the plurality of telephone terminals becomes a telephone terminal to which an incoming call (individual incoming call) addressed to the own device is notified, and the other one is newly added on behalf of the telephone terminal notified of an incoming call addressed to the own device. It becomes another telephone terminal which should be the answer destination.

  In a telephone terminal that is notified of individual incoming calls, the user is notified through the incoming call notification means that there is an individual incoming call, and includes identification information of other telephone terminals that should be a new response destination on behalf of the own device through the receiving means. Input of proxy response information is accepted. In the telephone terminal notified of the individual incoming call, when the input of the proxy response information is accepted, the forming means forms a proxy response request including the proxy response information, which is transmitted by the transmitting means to the new response destination through the telephone control apparatus. Sent to other phone terminals to be.

  In the telephone control device, when a proxy response request is received from a telephone terminal that has received an incoming call addressed to itself, the providing means indicates another telephone terminal that is to be a new response destination included in the proxy response request. The proxy response request is provided to another telephone terminal specified by the identification information. In the other telephone terminal, the notification means notifies the user that the proxy response request is provided to the own device, and the response operation from the user is received through the proxy response operation reception means.

  As a result, it is possible to answer the individual incoming call on another telephone terminal that should be the new answer destination instead of responding at the telephone terminal where the individual incoming call has occurred.

  According to the present invention, for individual incoming calls, the proxy response is requested to the intended proxy response destination without performing prior setting or response to the incoming call, and without performing complicated operations. You can

It is a figure for demonstrating the outline | summary of the telephone system (business phone system) of embodiment. It is a block diagram for demonstrating the structural example of a telephone terminal. It is an external view of a telephone terminal. It is a figure for demonstrating the example of proxy response information. It is a block diagram for demonstrating the structural example of a SIP server. It is a figure for demonstrating the example of the storage data of address management DB. It is a sequence diagram for demonstrating the 1st example in the case of making it perform a proxy response. It is a sequence diagram for demonstrating the 2nd example in the case of making it perform a proxy response. FIG. 9 is a sequence diagram following FIG. 8.

  Hereinafter, an embodiment of a telephone terminal system, a telephone control device and a telephone terminal according to the present invention will be described with reference to the drawings. In the embodiments described below, for example, a case where the telephone terminal system, the telephone control device, and the telephone terminal of the present invention are applied to a business phone system (button telephone system) formed in a business office will be described as an example. .

[Outline of the telephone system of the embodiment]
FIG. 1 is a view for explaining the outline of the telephone system of this embodiment. As shown in FIG. 1, the telephone system according to the present embodiment includes a plurality of telephone terminals 3 (1), 3 (2), a local area network (LAN) 2 to a SIP server 1 that is a telephone control device. 3 (3), 3 (4), 3 (5)... Are connected and configured. That is, the portion comprising the SIP server 1, the LAN 2, and the telephone terminals 3 (1), 3 (2), 3 (3), 3 (4), 3 (5), etc. constitutes the telephone system of this embodiment. It is a part to do.

  As shown in FIG. 1, the SIP server 1 is connected to the IP network 6 and the telephone network 7 that constitute the wide area network 8, and performs address resolution between terminals that connect communication paths (call lines). That is, the SIP server 1 has a function as a small exchange that connects the extension line and the extension line or the extension line. The SIP server 1 also has a function of performing call control such as associating a telephone number with an IP (Internet Protocol) address or calling and connecting the other party using SIP (Session Initiation Protocol). .

  Thus, the SIP server 1 also has a registrar server function and a proxy server function. Then, by using these functions, the SIP server 1 communicates with a telephone terminal connected to the LAN 2 or between a telephone terminal connected to the LAN 2 and a telephone terminal connected to the IP network 6 or the telephone network 7. In the meantime, enable communication channels to be connected.

  The IP network 6 means a network that performs communication using IP (Internet Protocol), and specifically the Internet. The telephone network 7 includes an analog public switched telephone network (PSTN (Public Switched Telephone Network)), a digital circuit network (ISDN (Integrated Services Digital Network)), a mobile telephone network, and the like.

  Each of the telephone terminals 3 (1), 3 (2), 3 (3), 3 (4), 3 (5),... Is used by the user to make a call. Each of the telephone terminals 3 (1), 3 (2), 3 (3), 3 (4), 3 (5),... Is connected to the LAN 2 through the SIP server 1 as described above. This is used when a call is made with another telephone terminal or with an external telephone terminal connected to the IP network 6 or the telephone network 7.

  As shown in FIG. 1, an external telephone terminal 9 as viewed from the SIP server 1 is connected to the wide area network 8. Although a large number of telephone terminals are connected to the wide area network 8, the telephone terminal 9 is shown here as one of the large number of telephone terminals connected to the wide area network 8 for simplicity of explanation. . The wide area network 8 may be connected to a single telephone terminal such as a home telephone terminal, or may be connected to a plurality of telephone terminals via a telephone control device such as an SIP server. There is also a case.

  In the telephone system of this embodiment, each of the telephone terminals 3 (1), 3 (2), 3 (3), 3 (4), 3 (5),... Cooperates with the SIP server 1 It can support the individual incoming call function. The individual incoming call function includes a dial-in function using an additional telephone number and a direct-in dial function using an extension number. The telephone system of this embodiment can use either function. is there. In the following, in order to simplify the description, the case where an individual incoming call is generated by the direct-in-dial function that does not need to receive an additional telephone number from a telephone company will be described as an example.

  Then, it is assumed that a call is made from the outside telephone terminal 9 to the telephone terminal 3 (1) of the telephone system of this embodiment using the direct-in-dial function. As a result, an individual incoming call occurs at the telephone terminal 3 (1) based on the call originating from the telephone terminal. In this case, it is determined that the user of the telephone terminal 3 (1) should have the user of the telephone terminal 3 (5) respond to the individual incoming call currently occurring in the own terminal. Do.

  Specifically, the user of the telephone terminal 3 (5) responds to the call from the other party according to the information indicating the destination (source) displayed on the display of the telephone terminal 3 (1) May be considered good. In addition, since the user of the telephone terminal 3 (1) handles emergency work, for example, there is no room for responding to individual incoming calls generated by the own device, and the user of the telephone terminal 3 (5) can be handled. You may be asked to

  In such a case, the user of the telephone terminal 3 (1) can request the user of the telephone terminal 3 (5) to make a proxy response to the individual incoming call. In this case, the user of the telephone terminal 3 (1) does not have to make the SIP server 1 pre-setting for call transfer, and does not respond to the individual call. ing. Then, if the user of the telephone terminal 3 (5) responds to the request, the SIP server 1 connects the telephone line between the telephone terminal 9 of the calling source and the telephone terminal 3 (5) of the proxy response destination. To make a call.

  Hereinafter, configuration examples of the telephone terminals 3 (1), 3 (2), 3 (3),... And the SIP server 1 constituting the telephone system of this embodiment will be described. In the following, first, a configuration example of the telephone terminals 3 (1), 3 (2), 3 (3),... Will be described, and then, a configuration example of the SIP server 1 will be described. Also, in the following description, the telephone terminal on which the operation to place a call is performed is referred to as “source”, the destination called from the source is referred to as “destination”, and the destination is a proxy response. When it becomes a request source, it is described as “calling source”. And about the telephone terminal for which the proxy response was requested, it describes as a "proxy response destination."

[Configuration Example of Telephone Terminals 3 (1), 3 (2), 3 (3), ...]
In this embodiment, the basic configurations of the telephone terminals 3 (1), 3 (2), 3 (3),... Connected to the SIP server 1 are the same. Therefore, the configuration example of the telephone terminal 3 (1) will be described on behalf of the telephone terminals 3 (1), 3 (2), 3 (3),. The basic configuration of the telephone terminal 9 on the outside line is the same as that of the telephone terminal 3 (1) described below.

  FIG. 2 is a block diagram for explaining a configuration example of the telephone terminal 3 (1) of this embodiment, and FIG. 3 is an external view of the telephone terminal 3 (1). In FIG. 2, although not shown, the control unit 310 is a microprocessor formed by connecting a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM), a non-volatile memory and the like through a CPU bus. It is. The control unit 310 controls each unit of the telephone terminal 3 (1).

  The connection terminal 301 constitutes a connection end to the LAN 2. The connection I / F 302 realizes connection with the SIP server 1 through the LAN 2. That is, the connection I / F 302 converts the signal transmitted to the own device into a signal of a format that can be processed by the own device and takes in the signal into the own device. Further, the connection I / F 302 converts a signal transmitted from the own device into a signal for transmission and performs a process of transmitting the signal. The telephone terminal 3 (1) of this embodiment is wired to the SIP server 1 through the connection terminal 301 and the connection I / F 302, and various information is exchanged with the SIP server 1 through the connection terminal 301 and the connection I / F 302. Send and receive. The packet processing unit 303 performs disassembly / generation processing of various data such as control data and audio data transmitted and received in a packetized form.

  The handset 304 comprises a speaker (receiver) and a microphone (transmitter). The codec 305 receives the audio data that has been subjected to packet decomposition in the packet processing unit 303, compresses and decompresses the audio data, converts it into an analog audio signal, and supplies it to the speaker of the handset 304 in the off-hook state. Thereby, the sound from the other party is emitted from the speaker of the handset 304. Also, the codec 305 converts an analog voice signal collected by the microphone of the handset 304 in the off-hook state into a digital signal, compresses the data, and supplies the compressed signal to the packet processing unit 303. The packet processing unit 303 packetizes the audio data from the codec 305 and transmits it to the other party through the connection I / F 302 and the connection terminal 301.

  As shown in FIG. 3, the handset 304 is placed at a fixed position on the left side of the casing of the telephone terminal 3 (1). The hook switch section 306 is in the on-hook state when the handset 304 is in the home position of the housing of the telephone terminal 3 (1), and in the off-hook state when picked up from the home position of the housing of the telephone terminal 3 (1) . The hook switch unit 306 notifies the control unit 310 of the on-hook / off-hook state. Thereby, the control part 310 can always grasp | ascertain the hook state of an own machine appropriately appropriately. The ringer 307 emits a ringing tone when an incoming call is received under the control of the control unit 310.

  The display controller 311 and the display 312 perform processing for displaying various information on the display screen of the display 312 under the control of the control unit 310. As shown in FIG. 3, the display 312 is provided on the upper right end side of the upper surface of the housing of the telephone terminal 3 (1), and the telephone number of the called party, the telephone number or name of the caller, the guidance message, Various information such as warning messages can be displayed.

  An operation input unit 313 and an operation input interface (hereinafter referred to as operation input I / F) 314 receive an operation input from a user and provides the received information to the control unit 310. As shown in FIG. 3, the operation input unit 313 is provided with several function keys such as flexible keys FK <b> 1 to FK <b> 8, numeric keys, transmission, response, and hold.

  The proxy response processing unit 321 performs proxy response through another target telephone terminal when receiving an operation to make a proxy response through the operation input unit 313 when an individual incoming call occurs in the own machine. Let's do it. The hold processing unit 322 implements a function of temporarily putting a call placed on its own device on hold. The transfer processing unit 323 implements a function of causing a call that has been placed on its own device to be received by another telephone terminal.

  When making a call in the telephone terminal 3 (1) having such a configuration, first, the handset 304 is taken off from the telephone terminal 3 (1) or the like to be in an off-hook state. Then, by inputting the telephone number of the other party through the numeric keypad of the operation input unit 313, the control unit 310 forms a call notification (outgoing message) including the telephone number of the other party. This call notification is transmitted through the connection I / F 302 and the connection terminal 301, and can call the other party. As a result, if the other party answers, the call line is connected, and a call can be made.

  Further, in the telephone terminal 3 (1), when answering a call placed on the own terminal, the control unit 310 functions by taking the handset 304 from the telephone terminal 3 (1) or the like to put it in an off-hook state. Then, a telephone line is connected to the other party of the telephone. Thereby, a telephone call can be performed with the other party.

  Furthermore, although an individual incoming call occurs at the telephone terminal 3 (1) and the user is present, as described above, there are also cases where the user of another telephone terminal wants to respond. In such a case, when the user of the telephone terminal 3 (1) inputs proxy response information through the operation input unit 313, the proxy response processing unit 321 functions and occurs on the telephone terminal 3 (1). It is possible for the user of another telephone terminal to make a proxy response to the individual incoming call.

  FIG. 4 is a diagram for explaining an example of proxy response information. The proxy response information, as shown in FIG. 4, is composed of proxy response destination identification information and a proxy response access code. The proxy response destination identification information is information that can uniquely identify another telephone terminal requesting a proxy response, and is information managed by the SIP server 1. Specifically, the extension number, IP address, MAC (Media Access Control) address, additional telephone number, and the like of the other telephone terminal as the proxy response destination. In this embodiment, description will be made assuming that the extension number of another telephone terminal is used as proxy response destination identification information as shown in FIG.

  The proxy response special number is information indicating that a proxy response has been instructed (requested). For example, as shown in FIG. 4, a normal telephone number or extension number such as “* 01” is used. It consists of different specific symbols and numbers. Note that the proxy response special code “* 01” shown in FIG. 4 is merely an example, and a string (a symbol and a number are not used with meaning, such as “* 99” or “# 01”. String).

  Further, as the proxy response special number, a flexible key provided in the telephone terminal 3 (1) described with reference to FIG. 3 may be used. For example, a proxy response special number may be assigned to the flexible key FK8, and proxy response information "extension number + flexible key FK8" may be formed when the flexible key FK8 is pressed following the extension number. Further, when the flexible key FK 8 is depressed following the extension number, for example, the control unit 310 may function to form proxy response information in which “* 01” is added to the extension number.

  The proxy response processing unit 321 realizes the proxy response function in cooperation with the SIP server 1 including the transmission of proxy response information input through the operation input unit 313 to the SIP server 1 as described above. In this case, the SIP server 1 implements a proxy response function by controlling the incoming call source telephone terminal and the proxy response destination telephone terminal according to the SIP (Session Initiation Protocol).

[Configuration Example of SIP Server 1]
FIG. 5 is a block diagram for explaining a configuration example of the SIP server 1. As shown in FIG. 5, the SIP server 1 includes an IP network connection terminal 101, an IP network interface (hereinafter abbreviated as IP network I / F) 102, and a packet disassembly / generation unit 103. Yes. The SIP server 1 includes a telephone network interface (hereinafter abbreviated as a telephone network I / F) 104, a connection terminal 105 to the telephone network, and an address management database (hereinafter abbreviated as an address management DB) 106. And. Furthermore, the SIP server 1 includes a LAN interface (hereinafter, abbreviated as LAN I / F) 107, a LAN connection terminal 108, and a control unit 110.

  The control unit 110 controls each unit of the SIP server 1 according to this embodiment, and as shown in FIG. 5, is a microprocessor configured by connecting the CPU 111, the ROM 112, and the RAM 113 through the system bus 114. Although not shown, the control unit 110 includes a so-called non-volatile memory, and should be retained even when the power is turned off, for example, various setting parameters and new programs provided for function enhancement. Can also be stored and retained.

  The connection terminal 101 constitutes a connection end to the IP network. The IP network I / F 102 receives a packet supplied through the IP network, converts it into a packet in a format that can be processed by itself, and supplies the packet to the control unit 110. The IP network I / F 102 converts a packet to be transmitted supplied through the control unit 110 into a packet in a transmission format, and transmits the packet to the IP network.

  The connection terminal 105 constitutes a connection end to the telephone network. The telephone network I / F 104 receives data supplied through the telephone network, converts it into data in a format that can be processed by itself, and supplies the data to the control unit 110. Also, the telephone network I / F 104 converts the data to be transmitted supplied through the control unit 110 into data of a transmission format, and transmits this to the telephone network.

  The connection terminal 108 constitutes a connection end to the LAN 2. The LAN I / F 107 receives a packet supplied via the LAN 2, converts it into a packet in a format that can be processed by the own device, and supplies the packet to the control unit 110. The LAN I / F 107 converts a packet to be transmitted supplied through the control unit 110 into a packet in a format for transmission, and transmits this to the LAN 2. Therefore, the SIP server 1 and the subordinate telephone terminals 3 (1), 3 (2), 3 (3), etc. transmit and receive various information through the connection terminal 108 and the LAN I / F 107.

  The packet disassembly / generation unit 103 mainly uses a terminal connected to a telephone network and a telephone terminal such as a telephone terminal 3 (1), 3 (2), 3 (3), etc. subordinate to the SIP server 1. When a call is made between the two, a packet of data to be transmitted and received is decomposed and generated. For example, voice packets to be transmitted to terminal devices connected to the telephone network from telephone terminals 3 (1), 3 (2), 3 (3),... Connected to the SIP server 1 are connected to the connection terminal 108, LANI. Suppose that it is supplied to the control unit 110 through / F107. In this case, the voice packet is supplied from the control unit 110 to the packet decomposition / generation unit 103, where the packet is decomposed and voice data is extracted, and the voice data is transmitted through the telephone network I / F 104 and the connection terminal 105 to the telephone network. And sent to the intended destination.

  Further, voice signals from the terminal connected to the telephone network to the telephone terminals 3 (1), 3 (2), 3 (3),... Connected to the SIP server 1 are connected to the connection terminal 105, the telephone network I. It is converted into audio data (digital data) through / F 104 and supplied to the control unit 110. The voice data is supplied from the control unit 110 to the packet disassembling / generating unit 103, and is converted into a packet of a predetermined format here, and then sent out to the LAN through the LAN I / F 107 and the connection terminal 108 to be a target telephone terminal 3 (1), 3 (2), 3 (3),...

  Packets are transmitted and received between an external terminal device connected to the IP network and the telephone terminals 3 (1), 3 (2), 3 (3),... Connected to the SIP server 1. For this reason, the packet decomposition / generation unit 103 does not perform packet decomposition or generation, and the IP network I / F 102 and the LAN I / F 107 prepare and transmit the data format as it is. Similarly, since packets are transmitted and received between the telephone terminals 3 (1), 3 (2), 3 (3),... Connected to the SIP server 1, the packet decomposition / generation unit 103 performs packet decomposition. No generation is performed, and packets are transmitted and received through the LAN I / F 107.

  Then, the address management DB 106 is connected to the IP network 6 and the LAN 2 in order to realize the registrar server function, and stores and holds address information on terminal devices that may be called through the SIP server 1. Specifically, the control unit 110 of the SIP server 1 receives registration requests (register requests) from various terminal devices connected to these through the IP network I / F 102 and the LAN I / F 107. In this case, the control unit 110 extracts address information such as an IP address and a URI (Uniform Resource Identifier) included in the received request. Then, the control unit 110 registers the extracted address information in the address management DB 106, and updates the registration information in the address management DB 106 using the extracted address information.

  In this way, information registered and managed in the address management DB 106 is referred to, and there is a request from the telephone terminals 3 (1), 3 (2), 3 (3),. Make sure to identify the communication destination. Then, the SIP server 1 realizes a function as a proxy server that transfers information (packet data) to be transmitted to the specified partner. The information registered and managed in the address management DB 106 is also used for determining incoming calls to the telephone terminals 3 (1), 3 (2), 3 (3),. Be

  FIG. 6 is a diagram for explaining an example of data stored in the address management DB 106. The address management DB 106 of the SIP server 1 includes telephone terminals 3 (1), 3 (2), LAN terminals connected to the SIP server 1, in addition to address information of terminal devices of other IP telephone systems connected to the IP network. It also manages address information on 3 (3),.

  Basically, as described above, the management information formed in the address management DB 106 of the SIP server 1 is address information such as an IP address or URI (SIP URI) transmitted from a terminal device connected to an IP network. is there. In the address management DB 106 of the SIP server 1 of this embodiment, as shown in FIG. 3, the telephone terminals 3 (1), 3 (2), 3 (3),. In addition to the IP address as the address information, the extension number and the port number are also managed. Besides this, information unique to each telephone terminal such as URL and MAC address can also be managed for each telephone terminal.

  Then, the telephone terminals 3 (1), 3 (2), 3 (3),... Of the telephone system of this embodiment make a call request (call request) to an external terminal connected to the IP network as a SIP server. Suppose that 1 accepts. In this case, the control unit 110 of the SIP server 1 specifies a target terminal device as a target according to the management information of its own address management DB 106, and transfers a message to the specified terminal device. . Of course, the SIP server 1 forms a call message for an external telephone terminal connected to the telephone network, and sends it to the purpose of being connected to the telephone network, like the conventional main unit. You can make a call to the telephone terminal.

  In addition, it is assumed that the SIP server 1 receives an incoming call request (outside call incoming) for the telephone terminals 3 (1), 3 (2), 3 (3),... Connected to the LAN 2 through the IP network 6 and the telephone network 7. . In this case, the control unit 110 of the SIP server 1 receives the transmitted outgoing message and sends it to the own system. As a result, it is possible to answer an incoming call through the telephone terminals 3 (1), 3 (2), 3 (3),... Connected to the SIP server 1.

  As described above, the SIP server 1 of this embodiment includes the packet decomposition / generation unit 103 and the address management DB 106, and relays messages between terminal devices connected to various networks to which the SIP server 1 is connected. be able to. Therefore, the SIP server 1 according to this embodiment can make connections between external lines and internal lines, connections between internal lines, and can notify the subordinate telephone terminals and the like of the use status of communication lines.

  In addition, the control unit 110 of the SIP server 1 must grasp the communication line in use and the available communication line through the IP network I / F 102, the telephone network I / F 104, and the LAN I / F 107, and appropriately perform the line exchange. You can also. Further, the control unit 110 determines the LED to be supplied for each telephone terminal 3 (1), 3 (2), 3 (3),... Connected through the LAN 2 according to the grasped usage state of the communication line. Control information for controlling lighting and extinguishing is formed and provided through the LAN 2.

  Further, as described above, the SIP server 1 of this embodiment has a direct in dial function as an individual incoming function. For this reason, it is assumed that a telephone terminal on the outside line such as the telephone terminal 9 makes a call by inputting an extension number such as “# extension number” in addition to the representative telephone number. In this case, the control unit 110 of the SIP server 1 can directly notify the incoming call only to the telephone terminal specified by the input extension number, instead of performing a so-called group incoming call.

  When an individual incoming call occurs at the telephone terminals 3 (1), 3 (2), 3 (3),... Connected to the SIP server 1 via the LAN 2, the user responds as described above. The proxy response function can be used by inputting information. The proxy response function enables the SIP server 1, the telephone terminal that is connected to the SIP server 1, and the telephone terminal that is the proxy response destination to cooperate with each other without performing a response operation on the telephone terminal that is the destination. This is a function that can request a response from the telephone terminal of the proxy response destination.

  In the telephone system of this embodiment, the proxy response function can be realized by two methods. In the first method, a proxy response can be made by returning a special response corresponding to the proxy response function to the proxy response destination telephone terminal in response to the session start request including the proxy response information from the caller telephone terminal. It is The second method enables a proxy response by using a conventional hold function and transfer function by returning a normal response without returning a special response request from the telephone terminal of the proxy response destination. It is.

  The first and second methods for realizing the proxy response function will be specifically described below. In the following, the user of the telephone terminal 3 (1) makes a direct call by making a direct call from the outside telephone terminal 9 to the telephone terminal 3 (1) under the SIP server 1 by the direct-in-dial function, and the user of the telephone terminal 3 (1) The case where the user of the terminal 3 (5) is made to make a proxy response will be described as an example. Also, in any of the first and second methods described below, it can be realized using an existing sequence according to SIP.

[First method for realizing proxy response]
FIG. 7 is a sequence diagram for explaining a first method of enabling proxy response. In the first method, as described above, in response to the session start request including the proxy response information from the call source telephone terminal, the proxy response destination telephone terminal returns a special response corresponding to the proxy response function. Enables proxy response.

  As shown in FIG. 7, by using the direct-in-dial function from the telephone terminal 9 on the outside line, a telephone call is made to the telephone terminal 3 (1) whose extension number is “101” under the SIP server 1. It is assumed that the incoming call has been made to the SIP server 1 by being hung up (step S1). The SIP server 1 receives an outgoing message from the outside telephone terminal 9 through the connection terminal 101 and the IP network I / F 102, decomposes it in the packet disassembly / generation unit 103, and supplies it to the control unit 110. As a result, the control unit 110 recognizes that an individual incoming call has occurred to the subordinate telephone terminal 3 (1).

  The control unit 110 of the SIP server 1 forms a session start request to notify that an individual incoming call has occurred, and supplies this to the packet disassembly / generation unit 103 to packetize it, thereby addressing the telephone terminal 3 (1). Generate a packet of Then, the control unit 110 transmits the packetized session start request (INVITE message) to the telephone terminal 3 (1) (step S2). As described above, in the SIP server 1, the control unit 110 and the packet disassembly / generation unit 103 cooperate with each other to the subordinate telephone terminals 3 (1), 3 (2), 3 (3),. Control packet to be provided.

  Then, the session start request transmitted from the SIP server 1 is received by the telephone terminal 3 (1), is subjected to packet decomposition by the packet processing unit 303, and the result is provided to the control unit 310. As a result, the control unit 310 of the telephone terminal 3 (1) recognizes that an individual incoming call has occurred in its own device. The control unit 310 of the telephone terminal 3 (1) controls the packet processing unit 303 to sequentially form a packet of response code "100" and a packet of response code "180", and transmits this to the SIP server 1. (Step S3). The packet with the response code "100" indicates that processing for the received session start request is in progress. The packet with the response code “180” indicates that the call is in progress.

  Thereafter, the control unit 310 of the telephone terminal 3 (1) performs processing for notifying the user that there is an incoming call to the own device (step S4). In step S <b> 4, the control unit 310 controls the ringer 307 to emit a ringtone and displays a message on the display 312 notifying that the incoming call is an individual call from the telephone terminal 9 on the outside line. Then, the control unit 310 of the telephone terminal 3 (1) receives a response operation or the like from the user (step S5). In step S5, if the user of the telephone terminal 3 (1) responds to the individual incoming call, the handset 304 may be picked up from the casing of the telephone terminal 3 (1) and taken off-hook.

  However, here, in order for the user of the telephone terminal 3 (1) to use the proxy response function, the extension number “105” of the telephone terminal 3 (5) as the proxy response destination and the proxy response special number “*” It is assumed that proxy response information “105 * 01” consisting of “01” is input through the operation input unit 313. When the proxy response information is input, the control unit 310 of the telephone terminal 3 (1) ends the notification of the individual incoming call through the ringer 307 or the display 312 (step S6).

  Then, the control unit 310 of the telephone terminal 3 (1) controls the proxy response processing unit 321 to generate a session start request (INVITE message) addressed to the SIP server 1 including the proxy response information received in step S6 Step S7). The control unit 310 of the telephone terminal 3 (1) packetizes the generated session start request by the packet processing unit 303, and transmits it to the SIP server 1 through the LAN 2 (step S8). The session start request generated and transmitted in steps S7 and S8 requests a proxy response to the telephone terminal 3 (5).

  The SIP server 1 that has received the session start request forms a packet with a response code “100” indicating that processing for the received session start request is being attempted, and this packet is transmitted through the LAN 2 to the requesting telephone terminal 3 (1 ) (Step S9). The packet decomposing / generating unit 103 generates the packet of the response code “100” under the control of the control unit 110. The session start request received by the SIP server 1 is a request for a proxy response to the telephone terminal 3 (5) including the proxy response information. Therefore, the control unit 310 of the SIP server 1 transmits the session start request including the proxy response information to the telephone terminal 3 (5) whose extension number is "105" (step S10).

  In the telephone terminal 3 (5) that has received the session start request including proxy response information, the control unit 310 controls the packet processing unit 303 to transmit a packet of response code "100" and a packet of response code "180". These are sequentially formed and transmitted to the SIP server 1 (step S11). The process of step S11 is the same as the process of step S3 described above, and the incoming call response destination telephone terminal 3 (5) is attempting the process (response code “100”) and is being called. This is to notify the SIP server 1 that there is a response (response code “180”).

  Thereafter, in the telephone terminal 3 (5) as the proxy response destination, the control unit 310 functions to perform processing for notifying the user that there is a request for a proxy response in the own device (step S12). In step S <b> 12, the control unit 310 controls the ringer 307 to emit a ringtone and displays a message notifying that there is a proxy response request from, for example, the telephone terminal 3 (1) on the display 312. And the control part 310 of the telephone terminal 3 (5) accepts the response operation from a user, etc. (step S13).

  In step S13, it is assumed that the user of the telephone terminal 3 (5) responds to the proxy response request by picking up the handset 304 from the casing of the telephone terminal 3 (1) and going off-hook. In this case, the control unit 310 of the telephone terminal 3 (5) controls the proxy response processing unit 321 to generate a session start request (INVITE message) addressed to the SIP server 1 including the proxy response special number "* 01" Step S14). Then, the control unit 310 of the telephone terminal 3 (5) packetizes the generated session start request by the packet processing unit 303, sends it to the LAN 2, and sends it to the SIP server 1 (step S15). The session start request generated and transmitted in steps S14 and S15 notifies (requests) the SIP server 1 to respond to the proxy response.

  Then, the control unit 110 of the SIP server 1 forms a packet of a response code “100” indicating that processing for the notification (request) corresponding to the proxy response is in progress, and this is used as a proxy response destination through the LAN 2 Is transmitted to the telephone terminal 3 (5) (step S16). Further, the control unit 110 of the SIP server 1 forms a packet with a response code “200” indicating that the notification (request) corresponding to the proxy response has been correctly accepted and approved, and transmits the packet through the LAN 2 as a proxy response. It transmits to the previous telephone terminal 3 (5) (step S17). These packets are generated by the packet disassembly / generation unit 103 under the control of the control unit 110.

  Thereafter, the SIP server 1 responds to an incoming call from the telephone terminal 9 of the outside line which is the transmission source, and a call is made between the telephone terminal 9 of the outside line of the transmission source and the telephone terminal 3 (5) of the proxy response destination. A line is connected so that a call can be made (step S18). In this way, until the step S18 is reached, no response is made to the incoming call from the telephone terminal 9 as the caller, and the proxy response destination of the caller 3 (1) as the proxy response destination is not answered. Only when the telephone terminal 3 (5) accepts it, it responds to an incoming call from the telephone terminal 9 that is the caller. Therefore, the user of the telephone terminal 3 (1) of the original individual destination (the destination of the caller requesting the proxy response) and the user of the telephone terminal 9 of the transmission source do not make a call. From the beginning, a telephone line can be connected between the user of the telephone terminal 9 as the caller and the user of the telephone terminal 3 (5) as the proxy response destination to start the call.

  After that, the control unit 110 of the SIP server 1 forms a cancel packet for canceling the incoming call from the outside telephone terminal 9 which has occurred to the telephone terminal 3 (1) which is the individual incoming call source, and receives this via the LAN 2 It transmits to the original telephone terminal 3 (1) (step S19). In response to this, in the destination telephone terminal 3 (1), the proxy response processing unit 321 and the packet processing unit 303 function to form a packet with the response code “487” and a packet of the ACK message, The data is sequentially transmitted to the SIP server 1 through the LAN 2 (step S20). In this case, the response code “487” indicates that the individual incoming call has been canceled, and the ACK message indicates that the cancellation of the individual incoming call has been approved.

  Further, the telephone terminal 3 (1) of the incoming call function forms a cancel packet for canceling the request for the proxy response to the telephone terminal 3 (5) by the proxy response processing unit 321 and the packet processing unit 303 functioning. Is transmitted to the SIP server 1 through the LAN 2 (step S21). In response to this, in the SIP server 1, the control unit 110 functions to form a packet of response code "487" and a packet of an ACK message, and sequentially transmit these to the telephone terminal 3 (1) through the LAN 2. (Step S22). In this case, the response code "487" indicates that the proxy response request has been canceled, and the ACK message indicates that the cancellation of the proxy response request has been approved.

  In this manner, a normal telephone communication line is connected between the outside telephone terminal 9 and the proxy response destination telephone terminal 3 (5), and a state in which a telephone call is being made. Therefore, when the call is finished and one of them performs an off-hook operation, the call line connected in step S18 is released according to the normal sequence.

[Second method]
8 and 9 are sequence diagrams for explaining a second method for enabling a proxy response. In the second method, as described above, the proxy response destination telephone terminal uses the hold function and the transfer function to return the normal response without returning the special response request. It is what makes it possible.

  First, as can be seen by comparing FIG. 8 with FIG. 7 described above, the processing from step S1 to step S13 is the same as the first method shown in FIG. 7 in the second method shown in FIGS. The same is done. For this reason, about the process from step S1 to step S13, the outline | summary is summarized and the part peculiar to the 2nd method following it is demonstrated in detail.

  That is, when an individual incoming call is generated from the telephone terminal 9 on the outside line to the telephone terminal 3 (1) under the SIP server 1 by the direct in-dial function (step S1), this is transmitted from the SIP server 1 to the telephone terminal 3 (1 ) (Steps S2 and S3). In the telephone terminal 3 (1), an individual incoming notification process is performed (step S4), a response operation is accepted (step S5), and the individual incoming notification process ends (step S6). Then, it is assumed that proxy response information “105 * 01” is input so that the user of the telephone terminal 3 (5) makes a proxy response in step S 5. In this case, a session start request including the proxy response information is generated (step S7) and transmitted to the SIP server 1 (steps S8 and S9).

  The session start request including the proxy response information is transmitted from the SIP server 1 to the proxy response destination telephone terminal 3 (5) (steps S10 and S11). Then, in the telephone terminal 3 (5), for example, a process of notifying the user that there is a proxy response request from the telephone terminal 3 (1) is performed (step S12), and a response operation from the user is accepted. (Step S13). In this step S13, it is assumed that an off-hook operation is performed to pick up the handset 304 of the telephone terminal 3 (5) from the casing of the telephone terminal 3 (5) in order to respond to the request for proxy response. In this case, the process after step S30 is different from the first method shown in FIG. The second method will be described in detail below.

  As described above, in step S13, it is assumed that an off-hook operation is performed to respond to a request for proxy response. In this case, the control unit 310 of the telephone terminal 3 (5) as the proxy response destination controls the packet processing unit 303 to generate a packet with the response code “200” indicating that the request is satisfied (step S30). Are sent to the SIP server 1 (step S31). In response to the packet of the response code "200" from the telephone terminal 3 (5) that is the proxy response destination, the control unit 110 of the SIP server 1 responds to the response code "200" to the destination telephone terminal 3 (1). Packets are generated and transmitted (step S32). As a result, the destination telephone terminal 3 (1) recognizes that the proxy response destination telephone terminal 3 (5) has accepted the proxy response request in response to the proxy response request from its own device. The original telephone terminal 3 (1) and the telephone terminal 3 (5) of the proxy response destination are in a call state.

  Then, the control unit 310 of the telephone terminal 3 (1) that is the incoming caller generates a session start request (holding INVITE) for holding the call state between the own terminal and the telephone terminal 3 (5) that is the proxy response destination. This is transmitted to the SIP server 1 (step S33). The session start request (holding INVITE) is generated and transmitted by the holding processing unit 322 and the packet processing unit 303 under the control of the control unit 310. In addition, the hold processing unit 322 of the telephone terminal 3 (1) functions to maintain a state where the call state between the own device and the telephone terminal 3 (5) as a proxy response destination is held.

  Upon receiving the session start request (holding INVITE), the control unit 110 of the SIP server 1 responds to the proxy response destination telephone terminal 3 (5) that is in a call state with the destination telephone terminal 3 (1). Then, a session start request (pending INVITE) is transmitted (step S34). In response to this, the control unit 310 of the telephone terminal 3 (5) as the proxy response destination controls the hold processing unit 322 and the packet processing unit 303 to generate a packet with the response code “200” indicating that the request is satisfied. This is transmitted to the SIP server 1 (step S35). In this case, the packet of the response code "200" is to notify the SIP server 1 of "hold pending". In addition, the hold processing unit 322 of the telephone terminal 3 (5) functions to maintain a state where the call state between the own terminal and the telephone terminal 3 (1) that is the incoming call is held.

  Then, the control unit 110 of the SIP server 1 responds to the packet with the response code “200” from the telephone terminal 3 (5) as the proxy response destination, and receives the packet with the response code “200” as an incoming call request. Transmission is made to the original telephone terminal 3 (1) (step S36). The packet with the response code “200” from the SIP server 1 notifies the caller terminal 3 (1) of “holding established”. As a result, the call state between the telephone terminal 3 (1) that is the incoming call and the telephone terminal 3 (5) that is the proxy response destination is put on hold at both telephone terminals.

  Then, the control unit 310 of the incoming call source telephone terminal 3 (1) controls the hold processing unit 322 and the packet processing unit 303 to generate a packet of response code "200" and transmits it to the SIP server 1 (step S37). The transmission of the packet with the response code “200” notifies the SIP server 1 that it responds to the individual incoming call generated in the external line to be transferred, that is, the telephone terminal 3 (1). At the time when the process of step S37 is performed, the standard function “state in which a call can be made with the transfer destination (transfer destination call enabled state)” is set.

  Thereafter, the process proceeds to the process shown in the sequence diagram of FIG. 9 to execute “transfer after response” of the standard function. That is, the control unit 310 of the incoming call source telephone terminal 3 (1) controls the transfer processing unit 323 and the packet processing unit 303 to form a transfer instruction (REFER) and transmits it to the SIP server 1 (step S38). This transfer instruction is given to the telephone terminal 3 (1) that has called the proxy response destination telephone terminal 3 (5) that is on hold with the telephone terminal 3 (1) of the called party. Instruct (notify) that the individual incoming call from 9 is transferred. That is, it instructs to dial (transfer) a call from an outside line placed on the telephone terminal 3 (1) to the telephone terminal 3 (5).

  Upon receiving the transfer instruction from the telephone terminal 3 (1), the control unit 110 of the SIP server 1 generates a response code “100” packet and transmits it to the telephone terminal 3 (1). Is notified (step S39). Then, the control unit 110 of the SIP server 1 transmits a transfer instruction (REFER) to the telephone terminal 3 (5) that is the proxy response destination that holds the call state with the telephone terminal 3 (1) (Step S1). S40).

  At the telephone terminal 3 (5) of the proxy response destination, the control unit 310 controls the transfer processing unit 323 and the packet processing unit 303 to send a packet with a response code "100" indicating that a transfer instruction is in progress. It is generated and transmitted to the SIP server 1 (step S41). In the telephone terminal 3 (5) as the proxy response destination, the control unit 310 controls the transfer processing unit 323 and the packet processing unit 303 to generate a packet with a response code “202” indicating that the transfer instruction is accepted. To the SIP server 1 (step S42). In response to this, the control unit 110 of the SIP server 1 generates a packet of a response code “202” indicating acceptance of the transfer instruction to the telephone terminal 3 (1) of the incoming call source, and the telephone terminal 3 (1) (Step S43).

  In this manner, after the call status is suspended between the incoming call source telephone terminal 3 (1) and the proxy response destination telephone terminal 3 (5) by the processing of steps S 30 to S 43, the telephone terminal 3 ( The outside line from the telephone terminal 9 responding in 1) is transferred to the telephone terminal 3 (5). As a result, the telephone communication line is connected between the telephone terminal 9 of the outside line of the transmission source and the telephone terminal 3 (5) of the proxy response destination (step S44), and the telephone call can be made. In this case, the incoming call terminal 3 (1) responds to the individual incoming call, but is immediately transferred to the proxy answering destination telephone terminal 3 (5). The user 1) does not directly answer the individual incoming call.

  Thereafter, the control unit 110 of the SIP server 1 forms a session end instruction (BYE) for instructing disconnection of the extension connected to the telephone terminal 3 (1) of the incoming call source, and this is used as a proxy response destination. Is transmitted to the telephone terminal 3 (5) (step S45). In response to this, the control unit 310 of the telephone terminal 3 (5) of the proxy response destination controls the packet processing unit 303 to generate a packet of response code "200" indicating that the session end instruction is given. This is transmitted to the SIP server 1 (step S46).

  Similarly, the control unit 110 of the SIP server 1 forms a session end instruction (BYE) instructing to disconnect the extension connected to the telephone terminal 3 (5) as a proxy response destination, Is transmitted to the telephone terminal 3 (1) (step S47). In response to this, the control unit 310 of the incoming call source telephone terminal 3 (1) controls the packet processing unit 303 to generate a packet of a response code "200" indicating that it responds to the session end instruction, This is transmitted to the SIP server 1 (step S48).

  Further, the control unit 310 of the caller telephone terminal 3 (1) controls the packet processing unit 303 to instruct session termination (BYE) to disconnect the external line connected to the external line telephone terminal 9. ) And is transmitted to the SIP server 1 (step S49). In response to this, the control unit 310 of the SIP server 1 generates a packet with a response code “200” indicating that it responds to the session end instruction, and transmits the packet to the telephone terminal 3 (1) that is the incoming call (step S50). ).

  By the processing of these steps S45 to S50, the connection of the extension line and the outside line which became unnecessary by the proxy response is disconnected, and simply the telephone terminal 9 of the outside line and the telephone terminal 3 (5) of the proxy response destination The telephone line connected during the period is maintained. Therefore, when the call is finished and one of them performs an off-hook operation, the call line connected in step S44 is released according to the normal sequence.

  Further, in the case of this second method, since the proxy response function can be realized by using the standard function (standard sequence) in SIP for realizing hold and transfer, there is no need to make a major change in the telephone system.

[Effect of the embodiment]
When an individual incoming call occurs at a telephone terminal connected to the SIP server 1, the user of the telephone terminal can use the proxy response function by a simple operation such as inputting proxy response information. The proxy response information is the information consisting of the extension number of the telephone terminal that is the proxy response destination and the proxy response special number, and can be easily input, so the proxy response function can be used easily and quickly. .

  Also, for the user of the originating telephone terminal, the appropriate person in charge is promptly connected without causing inconvenience that it takes time for another person in charge to answer the call, although it has been answered, You will be able to make calls.

  Further, since the proxy response function realized in the telephone system of this embodiment can realize the proxy response function by using a standard function (standard sequence) in SIP, the SIP server 1 or the telephone terminal constituting the telephone system No major changes are made to 3 (1), 3 (2), 3 (3),.

[Modification]
In the above-described embodiment, the case where the individual incoming call by the direct-in-dial function occurs is described as an example. However, even when the individual incoming call by the dial-in function using the additional telephone number occurs, The proxy response function can be realized in the same manner.

  In the above-described embodiment, the proxy response information is input through the operation input unit 313. However, the present invention is not limited to this. In recent years, there is also a telephone terminal provided with a touch panel composed of a display element such as an LCD (Liquid Crystal Display) having a relatively large display screen and a touch sensor. Therefore, for example, when using the proxy response function, when the flexible key to which the proxy response function is assigned is pressed, a list of telephone terminals (extension telephone terminals) selectable as proxy response destinations is displayed. To make it selectable. Then, when a telephone terminal is selected from the list, proxy response information including the extension number of the telephone terminal and the proxy response number may be formed.

  In the above-described embodiment, the case where the SIP server is used as the telephone control device has been described as an example. However, the present invention is not limited to this. The present invention can also be applied to a telephone system using a telephone control device other than the SIP server, as long as the control sequence implemented in the telephone system of the above-described embodiment can be realized.

  Further, in the above-described embodiment, when an individual incoming call from an outside line occurs in the telephone terminal 3 (1) connected to the SIP server 1, this is proxy-answered to the user of the telephone terminal 3 (5). I explained the case to get it. However, individual incoming calls are not limited to those coming from outside lines. An incoming call from an extension is also an individual incoming call that is placed on the own machine if the incoming call is made to the called telephone terminal. For this reason, also for an incoming call from an extension, it is possible to request a user of another telephone terminal to make a proxy response in the same manner as an individual incoming call from an outside line.

  Further, when a necessary notification or notification such as an incoming call is made to the user, the notification may be made using lighting or blinking of an LED (Light Emitting Diode) provided in the telephone terminal.

  In the above-described embodiment, the proxy response function may be assigned to the flexible key. However, the present invention is not limited to this. You may make it provide the function key only for a proxy response in a telephone terminal.

[Others]
As is apparent from the description of the above-described embodiment, the function of the incoming call notification means of the telephone terminal (hereinafter simply referred to as a telephone terminal) in which an individual incoming call addressed to the own device of the claim occurs is the same as that of the embodiment. The ringer 307 and the display 312 of the telephone terminal 3 (1) (hereinafter simply referred to as the telephone terminal 3 (1)) are realized. The function of the telephone terminal accepting means is realized by the operation input unit 313 of the telephone terminal 3 (1), and the function of the telephone terminal forming means is realized by the proxy response processing unit 321 of the telephone terminal 3 (1). ing. The function of the transmission means of the telephone terminal is realized by the LAN I / F 302 of the telephone terminal 3 (1). Further, the hold request unit function of the telephone terminal is realized by the hold processing unit 322 of the telephone terminal 3 (1), and the transfer instruction unit function of the telephone terminal 3 is realized by the transfer processing unit 323 of the telephone terminal 3 (1). doing.

  In addition, the function of the notification means of the other destination telephone terminal (hereinafter simply referred to as another telephone terminal) to be a new response destination in claims is the demerit (5) of the embodiment (hereinafter only the telephone terminal 3 (5))) and a display 312 are realized. Further, the function of the proxy response operation accepting means of the other telephone terminal is realized by the operation input unit 313 of the telephone terminal 3 (5). Further, the function of the start request generation means of the other telephone terminal is realized by the proxy response processing unit 321 of the telephone terminal 3 (5), and the function of the start request transmission means of the other telephone terminal is the telephone terminal 3 (5) LAN I / F 302 is realized.

  Also, the function of the normal start request generation means of the other telephone terminal is realized by the proxy response processing unit 321 of the telephone terminal 3 (5), and the function of the normal request transmission means of the other telephone terminal is the telephone terminal 3 (5 LAN I / F 302 is realized. Further, the function of the hold accepting unit of the other telephone terminal is mainly realized by the hold processing unit 322, and the transfer accepting unit of the other telephone terminal is realized by the transfer processing unit 323 of the telephone terminal 3 (5). .

  The function of the providing means of the telephone control apparatus (hereinafter referred to simply as the telephone control apparatus) of the claims is the control unit 110 of the SIP server 1 (hereinafter referred to simply as the SIP server 1) according to the embodiment. And LAN I / F 107 are realized. Further, the control unit 110 of the SIP server 1 realizes the function of the call line connection means of the telephone control device. The functions of the hold request relay means, the transfer instruction relay means, and the transfer line connection means of the telephone control apparatus are realized mainly by the control unit 110 of the SIP server 1 functioning.

  DESCRIPTION OF SYMBOLS 1 ... SIP server, 101 ... Connection terminal to IP network, 102 ... IP network I / F, 103 ... Packet decomposition / generation part, 104 ... Telephone I / F, 105 ... Connection terminal to telephone network, 106 ... Address management DB 107 107 LAN I / F 108 LAN connection terminal 2 LAN 3 (1) 3 (2) 3 (3) 3 (4) 3 (5) phone terminal 301 LAN connection Terminals 302 LAN I / F 303 Packet processing unit 304 Handset 305 Codec 306 Hook switch 307 Ringer 310 Control unit 311 Display controller 312 Display 313 Operation input , 314 ... operation input I / F, 321 ... proxy response processing unit, 322 ... hold processing unit, 323 ... transfer processing unit

Claims (6)

A telephone system comprising a plurality of telephone terminals connected to a telephone control device, comprising:
The telephone terminal which is one of the plurality of telephone terminals and is notified of an incoming call addressed to its own device is:
Incoming call notification means for notifying the user of an incoming call addressed to the own machine;
Identification information of another telephone terminal that is another one of the plurality of telephone terminals and should become a new response destination on behalf of its own device when notifying that there is an incoming call through the incoming call notification means Accepting means for accepting input of proxy response information including
Forming means for forming a proxy response request including the proxy response information when the proxy response information is received through the receiving means;
Transmitting means for transmitting the proxy response request formed by the forming means to the other telephone terminal through the telephone control device;
The telephone control device
Providing means for providing the proxy response request to the other telephone terminal specified by the identification information of the proxy response information included in the proxy response request when the proxy response request is received;
The other telephone terminal to be the new response destination is
Informing means for notifying the user after indicating that the proxy response request is provided to the own device,
And a proxy response operation receiving unit that receives a response operation from a user when the notification unit reports that there is the proxy response request. The telephone control device of a telephone system comprising a plurality of telephone terminals connected to a telephone control device, the telephone control device comprising:
Included in the proxy response request when a proxy response request including identification information of another telephone terminal that should be a new response destination on behalf of the own device is received from a telephone terminal that is notified of an incoming call addressed to the own device Providing means for providing the proxy response request to the other telephone terminal specified by the identification information of the proxy response information
The originator who has made a call to the telephone terminal that has received an incoming call addressed to itself when receiving a start request including specific information indicating that it responds to the proxy response request from the other telephone terminal Call line connection means for connecting a call line between the telephone terminal and the other first telephone terminal;
A telephone control device comprising: One of the plurality of telephone terminals of the telephone system configured by connecting a plurality of telephone terminals to the telephone control device,
An incoming call notification means for notifying the user when an incoming call directed to his / her own device occurs,
Identification information of another telephone terminal that is another one of the plurality of telephone terminals and should become a new response destination on behalf of its own device when notifying that there is an incoming call through the incoming call notification means Accepting means for accepting input of proxy response information including
Forming means for forming a proxy response request including the proxy response information when the proxy response information is received through the receiving means;
A transmitting unit for transmitting the proxy response request formed by the forming unit to the other telephone terminal through the telephone control device. The telephone terminal according to claim 3, wherein
Holding request means for forming and transmitting a holding request for the other telephone terminal when a normal start request corresponding to the proxy response request from the other telephone terminal is received;
Transfer instruction means for forming and transmitting a transfer instruction instructing to transfer the individual incoming call generated in the own device to the other telephone terminal after requesting the hold through the hold request means. Phone terminal characterized by. One of the plurality of telephone terminals of the telephone system configured by connecting a plurality of telephone terminals to the telephone control device, and is newly replaced with a telephone terminal that is notified of incoming calls addressed to itself. Other telephone terminals to which to respond
Informing means for informing the user after indicating that the proxy response request from the telephone terminal to which the incoming call to the own device is notified is provided;
Proxy response operation receiving means for receiving a response operation from the user when notified that there is the proxy response request via the notification means;
Start request generation means for forming a start request including specific information indicating response to the proxy response request when the response operation is received through the proxy response operation reception means;
Another telephone terminal comprising: a start request transmission unit configured to transmit the start request formed by the start request formation unit. One of the plurality of telephone terminals of the telephone system configured by connecting a plurality of telephone terminals to the telephone control device, and is newly replaced with a telephone terminal that is notified of incoming calls addressed to itself. Other telephone terminals to which to respond
Informing means for informing the user after indicating that the proxy response request from the telephone terminal to which the incoming call to the own device is notified is provided;
Proxy response operation receiving means for receiving a response operation from the user when notified that there is the proxy response request via the notification means;
Normal start request forming means for forming a normal start request indicating that the request addressed to the own machine is to be responded to when the response operation is accepted through the proxy response operation accepting means;
Normal start request transmitting means for transmitting the normal start request formed by the normal start request forming means;
Hold receiving means for holding a call state between the telephone terminal to which the incoming call to the own device is notified and the own device in response to the hold request from the incoming call source telephone terminal;
Transfer acceptance means for accepting transfer of individual incoming calls generated in the telephone terminal notified of the incoming call addressed to the own machine in response to a transfer request from the telephone terminal notified of the incoming call addressed to the own machine. Other phone terminals characterized by that.

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