JP2010187241A - Telephone switchboard and method for controlling call connection - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To manage an IP telephone and a non-IP telephone at an equal level, and to impart similarity with an operation by a circuit switching system, in a call-connection management regarding the IP telephone, and to simplify the operation regarding the call-connection management. <P>SOLUTION: A telephone switchboard 1 conducts a switching connection by managing information on the place of a telephone 30 housed; in the telephone switchboard, the information on the place of a housing is allocated virtually to the IP telephone 32; and an IP address for the IP telephone 32 and the virtually allocated information on the place of the housing are made to correspond by an extension IP unit 13. In the telephone switchboard, a central control device 16 reads the virtually allocated information, at the location of the housing from a telephone number on a transmission or a reception regarding the IP telephone 32, and the switching connection for the IP telephone 32 is required to the extension IP unit 13 by the virtually allocated information at the location of the housing. In the telephone switchboard, the extension IP unit 13 obtains the IP address for the IP telephone 32, on the basis of the virtually allocated information on the place of the housing and exchanges control information regarding the switching connection. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a telephone exchange apparatus such as a private branch exchange or a button telephone apparatus, and a call connection control method, and more particularly, to be connected by a circuit switching system such as an analog telephone or a digital multi-function telephone connected by a two-wire system. The present invention relates to a telephone exchange apparatus and a call connection control method that accommodate and configure both a telephone and an IP telephone that is exchange-connected by packet-type data via a local area network (LAN) using the Internet protocol (IP).

  With the widespread use of IP telephones, telephone switching apparatuses that allow IP telephones to be connected to telephone switching apparatuses that operate in a circuit switching system have appeared. A telephone connected by a circuit switching system (hereinafter referred to as “non-IP telephone”) such as an analog telephone or a digital multi-function telephone connected by a two-wire system is a circuit switching system switching switch (hereinafter referred to as “non-IP telephone”). The IP telephone is exchanged and connected by an IP packet on the LAN, but is handled differently.

  Therefore, when accommodating both IP telephones and non-IP telephones, it is necessary to control the call connection of the telephone exchange device in consideration of the characteristics of both terminals. In particular, a non-IP telephone can be managed in various ways depending on the accommodation position in the telephone exchange device (exchange switch). However, since the concept of the accommodation position cannot be taken in an IP telephone, It was necessary to take different management forms, and call connection control was also complicated.

  For example, Japanese Patent Laying-Open No. 2008-35476 (Patent Document 1) discloses a call connection control technique that accommodates IP telephones and non-IP telephones in a mixed manner and enables connection between them. However, a call control unit (such as a central control device) of a telephone exchange device performs call connection control while being conscious of being an IP telephone when the control target telephone is an IP telephone.

  As technologies relating to a telephone exchange apparatus that accommodates both IP telephones and non-IP telephones, Japanese Patent Application Laid-Open No. 2006-197260 (Patent Document 2), Japanese Patent Application Laid-Open No. 2005-117389 (Patent Document 3), and 2005-117390 gazette (patent document 4) etc. are also mentioned.

JP 2008-35476 A JP 2006-197260 A JP 2005-117389 A JP 2005-117390 A

  In the above prior art, IP telephones and non-IP telephones are mixedly accommodated, and in order to enable connection between them, the call control unit (such as a central control unit) Management of non-IP telephones based on IP, and IP telephones need to manage their own IP telephones that are different from non-IP telephones, which makes the management complicated and the operation related to call connection control also complicated There was a problem.

  The purpose of the present invention is to enable IP telephones and non-IP telephones to be managed equally, and to make call connection control related to IP telephones similar to the operation of the circuit switching method, and simplify the operation related to call connection control. It is to provide a telephone exchange apparatus and a call connection control method.

  The telephone exchange apparatus of the present invention accommodates non-IP telephones, manages accommodation position information of the non-IP telephones, and associates telephone numbers with the accommodation position information, thereby exchanging between non-IP telephones. A virtual accommodation position associating means for virtually allocating accommodation position information to an IP telephone and associating the telephone number of the IP telephone with the virtually assigned accommodation position information in the telephone exchange device to be connected; An IP unit for connecting a telephone, the IP unit having means for associating the address information of the IP telephone with the virtually allocated accommodation position information, and the virtual accommodation position associating means when making or receiving a call to the IP telephone Is used to read out the virtually allocated accommodation location information from the telephone number and assign it to the IP unit. Switching control means for requesting the exchange connection of the IP telephone according to the stored location information, wherein the IP unit performs the exchange control based on the virtually allocated accommodation location information obtained from the exchange control means. The address information of the target IP phone is obtained, control information related to the exchange connection is exchanged by the address information, and a communication path of the IP phone is established.

  Also, the call connection control method of the present invention accommodates a non-IP telephone, manages accommodation position information of the non-IP telephone, and associates a telephone number with the accommodation position information, thereby providing a non-IP telephone. Virtual accommodation location association for virtually assigning accommodation location information to an IP phone and associating the telephone number of the IP phone with the virtually assigned accommodation location information in a telephone exchange apparatus that performs exchange connection between The IP unit that connects the IP phone associates the address information of the IP phone with the virtually allocated accommodation location information, and assigns the virtual phone number from the telephone number when making or receiving a call to the IP phone. The storage location information is read out, and an exchange connection of the IP telephone is requested by the virtually allocated storage location information. In response to the request for exchange connection, the address information of the IP telephone subject to exchange control is obtained based on the virtually allocated accommodation location information, and the control information related to the exchange connection is exchanged by the address information. It is characterized in that a communication path of an IP telephone is established.

  The present invention performs virtual registration in which an IP telephone connected to a telephone exchange apparatus is virtually allocated with a storage location similar to that of the telephone, and a LAN and an exchange switch (time switch) between the IP telephone and the telephone. ), Call connection only via LAN between IP telephones, or call connection only via an exchange switch such as between telephones by the accommodation location information, and call connection control related to IP telephones can be performed. There is an effect that the operation related to the call connection control can be simplified by giving similarity to the operation by the circuit switching system.

  In addition, by performing virtual registration in which IP telephones are virtually assigned accommodation locations, it is possible to connect more telephones than the number of telephones that can be allocated to the exchange switch (time switch) capacity.

It is a system configuration diagram showing a telephone exchange device of the present invention. It is explanatory drawing which shows the package (call circuit, call terminal, etc.) mounting state in the telephone exchange apparatus of this invention. It is explanatory drawing which shows the correspondence of package mounting and highway in the telephone switching apparatus of this invention. It is explanatory drawing which shows the concept of the state which accommodated and registered the IP telephone in the telephone switching apparatus of this invention virtually. It is a block block diagram which shows the extension IP unit accommodated in the telephone switching apparatus of this invention. It is a table memorize | stored in the memory | storage device of the telephone switching apparatus of this invention, Comprising: It is a figure which shows the accommodation state management table which manages the registration state and use state of a package (a telephone circuit, a telephone terminal, etc.). FIG. 4 is a table stored in the storage device of the telephone exchange device of the present invention, showing a virtual accommodation state management table for managing the registration state and usage state of a virtual package (IP phone) for virtually accommodating an IP phone. FIG. It is a table stored in the extension IP unit of the telephone exchange apparatus of the present invention, and is a diagram showing an IP telephone management table that associates a virtual accommodation position for virtually accommodating an IP telephone with an IP telephone. It is explanatory drawing which shows the structure of the message used for the exchange connection operation | movement (call connection control) in the telephone switching apparatus of this invention. It is a 1st operation | movement sequence diagram explaining the exchange connection operation | movement (call connection control) in the telephone switching apparatus of this invention. It is the 1st connection state figure explaining exchange connection operation (call connection control) operation in a telephone exchange device of the present invention. It is a 2nd operation | movement sequence diagram explaining the exchange connection operation | movement (call connection control) in the telephone switching apparatus of this invention. It is a 3rd operation | movement sequence diagram explaining the exchange connection operation | movement (call connection control) in the telephone switching apparatus of this invention. It is a 2nd connection state figure explaining the exchange connection operation (call connection control) operation | movement in the telephone switching apparatus of this invention. It is explanatory drawing which shows the package (call circuit, call terminal, etc.) mounting state of other embodiment in the telephone switching apparatus of this invention. It is a table memorize | stored in the memory | storage device of the telephone switching apparatus of this invention, Comprising: It is a figure which shows the accommodation state management table of other embodiment which manages the registration state and use state of a package (a telephone circuit, a telephone terminal, etc.). . It is the operation sequence figure of the 4th (other embodiment) explaining exchange connection operation (call connection control) in a telephone exchange device of the present invention. It is a 3rd connection state figure explaining the exchange connection operation (call connection control) operation | movement in the telephone switching apparatus of this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a system configuration diagram showing a telephone exchange apparatus according to the present invention. In FIG. 1, a telephone exchange device (PBX) 1 is a time switch (time division switch) for exchanging lines of telephone terminals (telephones, digital multi-function telephones, etc.) and lines (public telephone network 6 office lines, dedicated lines, etc.). ) (TSW) 10, and this time switch 10 includes a line circuit (LIN) 11, a digital line circuit (DMTLIN) 12, an extension IP unit (SVCU) 13, a primary group ISDN trunk (PRI) 14, and A basic ISDN trunk (ITC) 15 is accommodated.

  Here, the line circuit 11 connects a plurality of analog telephones (TEL) 30 (maximum of 8 in the present embodiment), controls them (outgoing / incoming call control, etc.), and communicates with the telephone exchange device 1. The digital line circuit 12 connects a plurality of digital multi-function telephones (MFT) 31 (maximum of 8 in this embodiment) 31 and controls them (outgoing / incoming call control, etc.). The interface with the telephone exchange device 1 is performed.

  The extension IP unit 13 connects a plurality of IP telephones 32 (up to 128 in the present embodiment), which communicate via the local area network (LAN) 5 by the Internet protocol (IP), via the LAN 5. These are controlled (outgoing / incoming control, etc.) to interface with the telephone exchange device 1. The primary group ISDN trunk 14 connects the primary group ISDN line from the public telephone network 6, and Control (call / call control, etc.) and interface with the telephone exchange device 1. Further, the basic ISDN trunk 15 connects a basic ISDN line from the public telephone network 6 and controls (transmits) this. / Incoming call control etc.) to interface with the telephone exchange device 1.

  The telephone switching device 1 also includes a central control device (CC) 16, which controls and controls the entire telephone switching device 1 to perform call connection control, and is provided by the telephone switching device 1. Function (telephone connection service). A storage device (MEM) 17 is connected to the central control device 16 via the CC bus 19. The storage device 17 stores programs for the central control device 16 to perform operations such as call connection control, and station data (various tables) such as system setting conditions, operation conditions, function conditions, and operation states. It is. Further, an input / output device (IOC) 19 for connecting a data terminal (DTE) 40 used for setting the station data necessary for the operation of the telephone exchange device 1 is connected to the CC bus 19. When the telephone exchange device 1 is used, station data can be set from the data terminal 40 to the storage device 17 in accordance with usage conditions and the like.

  In the present embodiment, the analog telephone (TEL) 30 and the digital multi-function telephone (MFT) 31 may be collectively referred to as a non-IP telephone. Non-IP telephones indicate telephones and telephone terminals that are directly accommodated in circuit switching type switches (time switches), and are different from IP telephones that communicate with packets (IP packets) via a LAN. It is defined for use separately.

  FIG. 2 is an explanatory diagram showing a package (call circuit, call terminal, etc.) mounted state in the telephone exchange device of the present invention. Here, the package (or PKG) is a general term for printed circuit boards constituting the line circuit 11, the digital line circuit 12, the extension IP unit 13, the primary group ISDN trunk 14, and the basic ISDN trunk 15.

  In FIG. 2, the telephone exchange device 1 is provided with a plurality of slots (1 to 16 slots in the present embodiment) that can accommodate a plurality of packages freely, depending on the system configuration conditions required by the user. Select the required package to accommodate. The PKG accommodation position 102 is a package (PKG) accommodation position number. The PKG accommodation position numbers 1 to 4 include the line circuit 11, the PKG accommodation position numbers 5 to 11 include the digital line circuit 12, and the PKG accommodation position number 12 includes The primary group ISDN trunk 14, the PKG accommodation position number 15 shows a basic ISDN trunk 15, and the PKG accommodation position number 16 shows an extension IP unit 13. In the telephone exchange device 1 of the present embodiment, each PKG accommodation position (slot) has a capacity to handle voice circuits for 8 circuits (8 channels (ch)). The extension IP unit 13 virtually accommodates the IP telephone 32 in the time switch 10 (that is, when the telephone exchange device 1 performs a call connection operation, the IP telephone 32 is treated as a non-IP telephone. The virtual terminal registration area 130 is configured so that it can be handled.

  FIG. 3 is an explanatory diagram showing the correspondence between package mounting and highway in the telephone exchange device of the present invention.

  In FIG. 3, voice communication paths for 8 circuits (8 ch) are assigned to each PKG accommodation position (slot) shown in FIG. 2, and the highway (H / H) of the time switch 10 is configured. W) has 64 time slots (TS) per highway, and is configured to perform circuit switching processing for 64 speech paths. Then, as shown in FIG. 3, eight circuits of the package (line circuit 11 in this embodiment) accommodated in the PKG accommodation position number 1 (PKG01), that is, 1ch to 8ch are time slots 0 and 2 of the highway 1, respectively. , 4, 6, 8, 10, 12, and 14 are assigned. Similarly, 8 circuits of the package accommodated in the PKG accommodation position number 2 (PKG02), that is, 1ch to 8ch are allocated to the time slots 1, 3, 5, 7, 9, 11, 13, 15 of the highway 1, respectively. ing.

  That is, the packages accommodated in the PKG accommodation position numbers 1 to 8 (PKG01 to 08) are individually assigned to the time slots of the highway 1, and the packages accommodated in the PKG accommodation position numbers 9 to 16 (PKG09 to 16). Are individually assigned to the highway 2 time slots. When call connection is performed by switching connection, circuit switching operation is performed by performing time division switching processing in each assigned time slot.

  FIG. 4 is an explanatory diagram showing the concept of a state in which IP telephones are virtually accommodated and registered in the telephone exchange device of the present invention. As shown in FIG. 2, when the extension IP unit 13 is connected (accommodated) and the IP telephone 32 can be accommodated, the IP telephone 32 is virtually accommodated in the time switch 10, When the telephone exchange device 1 performs a call connection operation, the IP telephone 32 can be handled in the same manner as a non-IP telephone.

  In FIG. 4, the telephone exchange device 1 includes a plurality of virtual slots (16 slots of 17 to 32 in this embodiment) that can accommodate virtual packages that accommodate a plurality of IP telephones. The PKG accommodation position 132 is a virtual package (PKG) accommodation position number, and the PKG accommodation position numbers 17 to 32 are assumed to contain virtual packages for accommodating IP telephones. It is logically configured so that eight IP telephones can be connected. Further, in the present embodiment, as in the explanatory diagram shown in FIG. 2, each PKG accommodation position (slot) is assumed to be able to handle voice communication paths for 8 circuits (8 channels (ch)).

  FIG. 5 is a block diagram showing an extension IP unit accommodated in the telephone exchange apparatus of the present invention.

  In FIG. 5, the extension IP unit 13 exchanges a telephone with a highway interface unit (H / W I / F unit) 13A for exchanging voice information with the time switch 10 (highway 1 or 2 of the time switch) of the telephone exchange device 1. The central control device 16 of the device 1 and a central control device interface unit (CC I / F unit) 13B for exchanging call control information (control message) related to the call control of the exchange operation are provided. A voice processing unit 13C is connected to the highway interface unit 13A, and the voice processing unit 13C includes eight voice processing circuits C1 to C8 for sampling, quantizing, compressing and expanding voice information. is there. That is, the audio processing unit 13C is configured by a digital signal processor, and is configured so that audio processing can be performed for 8 channels simultaneously by a program of the digital signal processor. Thereby, it is handled as if eight audio processing circuits C1 to C8 are provided.

  In addition, an RTP (Real-time Transport Protocol) processing unit 13D is connected to the voice processing unit 13C, and the RTP processing unit 13D transmits and receives RTP. That is, the RTP processing unit 13D converts the voice information obtained from the voice processing unit 13C into a format that can be transmitted by RTP, transmits the IP packet as an IP packet, and transmits the voice information transmitted by RTP received as an IP packet. Information is taken out and transmitted to the sound processing unit 13C. The RTP processing unit 13D is also connected to the central control unit interface unit 13B, and in accordance with call control information (control message) exchanged with the central control unit 16, the voice processing circuits (ch1 to ch8) of the voice processing unit 13C. C1 to C8 can be freely selected and connected, and the voice information from these voice processing circuits C1 to C8 is converted into voice information that can be transmitted by RTP, and the IP corresponding to the call control information (control message). An IP packet is assigned by adding a header, or an IP header is analyzed according to call control information (control message) for the received IP packet, and the voice information transmitted by RTP in the IP packet is converted to the voice processing unit 13C. The audio processing circuits C1 to C8 are freely selected and connected for transmission.

  In addition, a LAN interface unit (LAN I / F unit) 13H is connected to the RTP processing unit 13D, and this LAN interface unit 13H performs an interface with the LAN 5, and is obtained from the RTP processing unit 13D. The IP packetized RTP format voice information is transmitted to the LAN 5, and the IP packetized RTP format voice information received from the LAN 5 is transmitted to the RTP processing unit 13D.

  Further, a call control unit 13E is connected to the central control unit interface unit 13B, and the call control unit 13E responds to call control information (control message) in a predetermined format exchanged with the central control unit 16 in accordance with the IP telephone 32. The control processing related to the call connection is performed. That is, the call control unit 13E edits, if necessary, the call control information (control message) in the predetermined format, adds an IP header, and converts the call control information (control message) into an IP packet. The IP header of the IP packet transmitted to the target IP telephone 32 via the LAN interface unit 13H or received from the IP telephone 32 via the LAN interface unit 13H is analyzed, and call control information (control message) in the IP packet is analyzed. ), If necessary, it is edited and transmitted to the central controller 16 as call control information (control message) in a predetermined format.

  In addition, a registration control unit 13F is connected to the LAN interface unit 13H. The registration control unit 13F performs processing for registering the IP telephone 32 for use as an extension telephone terminal of the telephone exchange device 1. That is, in order to register the IP telephone 32 as an extension telephone terminal, when the IP telephone 32 enters an online state, it sends registration request information to the extension IP unit 13 via the LAN 5 to make a registration request. This registration request information includes an IP address (address information in a form different from the telephone number) used by the IP telephone 32 and an extension number (telephone number). Then, the extension IP unit 13 receives the registration request information by the registration control unit 13F via the LAN interface unit 13H, and controls to write this registration state in the storage unit 13G connected to the registration control unit 13F. Yes. The storage unit 13G stores an IP telephone management table necessary for the call control unit 13E to perform control processing related to call connection, and the registration state can be managed by this table.

  FIG. 6 is a table stored in the storage device of the telephone exchange device of the present invention, and is a diagram showing an accommodation state management table for managing the registration state and use state of packages (call circuit, call terminal, etc.).

  In FIG. 6, the accommodation state management table 20 has a PKG accommodation position number 201A on which a package is mounted, and this corresponds to the PKG accommodation position number of the telephone exchange device 1 shown in FIG. Circuit numbers (ch1 to ch8) 201B are assigned to the PKG accommodation position numbers. This is for uniquely defining a circuit (accommodating terminal (port) such as a telephone or a line) of each package. Furthermore, the PKG accommodation position number 201A and the circuit number 201B are configured to identify the accommodation position 201 that is an accommodation terminal (port) such as a telephone or a line.

  Corresponding to each of the accommodation positions 201, information on the type 202, extension number 203, office line number 204, IP address 205, and usage state 206 can be stored. The type 202 is information related to the type of package installed (package type such as a line circuit or digital line circuit), and the extension number 203 is connected to a telephone whose type of package is a line circuit or digital line circuit. This is information indicating the extension number (telephone number) of the telephone in the case where The office line number 204 is information indicating the telephone number of the station line when the type of the installed package is to connect a station line (public network line) such as a primary group ISDN trunk or a basic ISDN trunk. . The IP address 205 is information indicating the IP address on the LAN side of the extension IP unit when the type of the installed package is an extension IP unit and is connected to the LAN.

  The use state 206 is a flag for managing the state of each accommodation position 201, and whether the telephone or the line for the accommodation position 201 is free (unused state) or blocked (in use state). Change and manage in the process. In this way, for each accommodation position 201 (PKG accommodation position number 201A and circuit number 201B), information of type 202, extension number 203, office line number 204, IP address 205, and usage state 206 is stored, respectively. It is configured to be manageable.

  FIG. 7 is a table stored in the storage device of the telephone exchange apparatus according to the present invention, which is a virtual accommodation state for managing the registration state and usage state of a virtual package (IP phone) for virtually accommodating an IP phone. It is a figure which shows a management table.

  In FIG. 7, the virtual accommodation state management table 21 has a virtual PKG accommodation position number 211A for mounting a virtual package, which corresponds to the virtual PKG accommodation position number of the telephone exchange device 1 shown in FIG. is there. A virtual circuit number (ch1 to ch8) 211B is assigned to each virtual PKG accommodation position number. This is for unambiguously defining the circuit of each virtual package (virtual accommodation terminal (port) regarded as connecting an IP telephone). Furthermore, the virtual accommodation position 211 which is the virtual accommodation terminal (port) of the IP telephone is specified by the virtual PKG accommodation position number 211A and the virtual circuit number 211B.

  Further, in correspondence with each of the virtual accommodation positions 211, information of the type 212, the extension number 213, the IP address 214, and the usage state 215 can be stored. The type 212 defines an IP telephone that is information related to the type to be connected, and the extension number 213 is information indicating the extension number of the IP telephone. The IP address 214 is information indicating the IP address of the IP telephone.

  In addition, the use state 215 is a flag for managing the state of each virtual accommodation location 211, and calls whether the IP telephone or line for the virtual accommodation location 211 is free (unused) or blocked (in use). It is changed and managed during the connection process. In this way, information on the type 212, extension number 213, IP address 214, and usage state 215 can be stored and managed for each virtual accommodation location 211 (virtual PKG accommodation location number 211A and virtual circuit number 211B). It is configured as follows.

  FIG. 8 is a table stored in the extension IP unit of the telephone exchange apparatus of the present invention, and shows an IP telephone management table associating a virtual accommodation position for accommodating an IP telephone virtually with an IP telephone. FIG.

  In FIG. 8, the IP telephone management table 22 has a virtual PKG accommodation position number 221A for mounting a virtual package, and a virtual circuit number (ch1 to ch8) 221B is assigned to each virtual PKG accommodation position number. ing. This is for unambiguously defining the circuit of each virtual package (virtual accommodation terminal (port) regarded as connecting an IP telephone). Further, the virtual accommodation position 221 that is a virtual accommodation terminal (port) of the IP telephone is specified by the virtual PKG accommodation position number 221A and the virtual circuit number 221B.

  In addition, the extension number 222, the IP address 223, and the login state 224 information can be stored corresponding to each of the virtual accommodation positions 221. It is assumed that the extension number 222 of the IP telephone connected to the virtual accommodation position 221 that is a virtual accommodation terminal (port) is connected to the virtual accommodation position 221 that is a virtual accommodation terminal (port). The information indicates the extension number of the IP telephone, and the IP address 223 is information indicating the IP address of the IP telephone.

  The login state 224 is a flag for managing the state of each virtual accommodation location 211. Whether the IP telephone set for the virtual accommodation location 211 is in an online state and logged in from this IP phone (logged in) or the IP phone is offline. It is a state and manages whether or not the user has logged in from the IP telephone (no login). In this way, for each virtual accommodation location 221 (virtual PKG accommodation location number 221A and virtual circuit number 221B), the information of the extension number 222, the IP address 223, and the login state 224 is stored and can be managed respectively. Has been.

  FIG. 9 is an explanatory diagram showing the structure of a message used for the exchange connection operation (call connection control) in the telephone exchange apparatus of the present invention.

  In FIG. 9, the message format 60 shown in FIG. 9A is exchanged between the central controller 16, the line circuit 11, the digital line circuit 12, the extension IP unit 13, the primary group ISDN trunk 14, and the basic ISDN trunk 15. This message is used to control an existing telephone or line. The order length 61 is information indicating the length of the message, the order type 62 is information indicating whether it is an individual order or a common order, and the PKG accommodation position number 63 is information indicating the actual PKG accommodation position number to be controlled. The circuit number 64 is information indicating the actual circuit number to be controlled, and the control message is information indicating specific control contents. That is, the telephone set and the line to be controlled can be specified by the PKG accommodation position number 63 and the circuit number 64.

  In FIG. 9, a message format 70 shown in FIG. 9B is a message used for controlling an IP telephone exchanged between the central control device 16 and the extension IP unit 13. The order length 71 is information indicating the length of the message, the order type 72 is information indicating whether it is an individual order or a common order, and the virtual PKG accommodation position number 73 is a virtual PKG accommodation position number to be controlled. The virtual circuit number 74 is information indicating the virtual circuit number to be controlled, and the PKG accommodation position number 75 is the PKG accommodation position number of the extension IP unit 13 which is a physically existing package. Further, the control message is information indicating specific control contents. That is, the IP telephone to be controlled can be specified by the virtual PKG accommodation position number 73 and the virtual circuit number 74.

  Next, a first example of the exchange connection operation in the telephone exchange of the present invention will be described.

  FIG. 10 is a first operation sequence diagram for explaining the exchange connection operation (call connection control) in the telephone exchange device of the present invention. In this operation sequence diagram, one of the IP telephones 32 becomes a calling IP telephone 32a which is a calling terminal, and one of the digital multifunction telephones (hereinafter referred to as “multifunctional telephone”) 31 is a called multifunction telephone. 31a shows a case where a call is made from the calling IP telephone 32a to the incoming multifunction telephone 31a. It is assumed that the outgoing IP telephone 32a has previously performed login processing to the extension IP unit 13 and is ready for use.

  First, when the originating IP telephone 32a is off-hooked (S101), the originating IP telephone 32a transmits an off-hook message to the extension IP unit 13 via the LAN 5 by a predetermined procedure and format using IP packets (S102). When the extension IP unit 13 receives this off-hook message, it creates an off-hook message to be transmitted to the central control device 16 in the format shown in FIG. 9B, and transmits it to the central control device 16 (S103). Then, the central controller 16 recognizes that the originating IP telephone 32a (for example, extension number “2001”) is off-hook, and uses the IP telephone having the extension number “2001” in the virtual accommodation state management table 21 shown in FIG. Let the state be a “blocked state”.

  Here, a process of creating a message in the format shown in FIG. 9B in order for the extension IP unit 13 to receive some message from the originating IP telephone 32a and transmit the message to the central control device 16 will be described.

  When the extension IP unit 13 receives any message (for example, off-hook message) from the outgoing IP telephone 32a (IP telephone), it extracts the IP address and extension number of the outgoing IP telephone 32a stored in the received message, The corresponding accommodation location number 221 (virtual PKG accommodation location number 221A accommodation location number and virtual circuit number 221B for specifying the outgoing IP phone) is obtained from the IP telephone management table shown in FIG. That is, for example, when the IP address of the originating IP telephone is “192.168.0.11” and the extension number is “2001”, the virtual PKG accommodation position number is “PKG17” and the virtual circuit number is Since these are “ch1”, they are stored in the virtual PKG accommodation position number 73 and the virtual circuit number 74 in the format shown in FIG. 9B, and the extension IP that is the own device is stored in the PKG accommodation position number 75. “PKG16” which is the PKG accommodation position number of the unit 13 is stored. The control message 76 stores the message content received from the originating IP telephone 32a (for example, the message content indicating off-hook).

  In the description of the embodiment of the present invention, in order for the extension IP unit 13 to receive some message from the IP telephone and send the message to the central control device 16, the message in the format shown in FIG. In the case of creation, the above processing is performed in the same manner, and the description of the format creation procedure shown in FIG. 9B by the extension IP unit 13 will be omitted.

  Next, when the originating IP telephone 32a is dialed (S104), the originating IP telephone 32a transmits a dial message to the extension IP unit 13 via the LAN 5 by a predetermined procedure and format using IP packets (S105). The extension IP unit 13 extracts the dial number stored in the received dial message, and also stores the IP address and extension number of the outgoing IP telephone 32a and the corresponding location number 221 from the IP telephone management table shown in FIG. Ask for. Then, a dial message to be transmitted to the central control device 16 is transmitted in the format shown in FIG. 9B (S106).

  Then, the central control device 16 receives the destination dial from the originating IP telephone 32a (extension number “2001”), and refers to the accommodation state management table 20 shown in FIG. 6 and the virtual accommodation state management table 21 shown in FIG. Then, the destination telephone is specified. For example, if the destination telephone is the multi-function telephone 31a, an incoming message is transmitted through the digital extension circuit 12 connected to the telephone (S107). On the other hand, since central control unit 16 recognizes that the calling telephone is an IP telephone, the ringing sound in the format shown in FIG. 9B is output so as to output a ringing sound to outgoing IP telephone 32a. A transmission instruction message is created and transmitted to the extension IP unit 13 (S108).

  Here, the central controller 16 creates a message in the format shown in FIG. 9B in order to send some message to the originating IP telephone 32a (IP telephone) via the extension IP unit 13. explain.

  First, the central controller 16 extracts a virtual PKG accommodation position number (for example, “PKG17”) and a virtual circuit number (for example, “ch1”) corresponding to the originating IP telephone 32a from the accommodation state management table shown in FIG. These are stored in the virtual PKG accommodation position number 73 and virtual circuit number 74 in the format shown in FIG. 9B, and the PKG accommodation position number 75 contains the PKG accommodation position number (for example, “ PKG16 ") is stored. The control message 76 stores a necessary message (for example, a ringing tone transmission instruction message), and creates a message in the format shown in FIG. 9B.

  In the description of the embodiment of the present invention, a message in the format shown in FIG. 9B is created in order for the central control device 16 to send some message to the IP telephone via the extension IP unit 13. In this case, the above processing is performed in the same manner, and the description of the format creation procedure shown in FIG.

  When the extension IP connection unit 13 receives the ringing tone sending instruction message in the format shown in FIG. 9B from the central controller 16, the extension IP connection unit 13 creates the ringing tone sending instruction message in a predetermined procedure and format using IP packets. This is transmitted to the originating IP telephone 32a. Then, the originating IP telephone 32a outputs a ringing tone from the handset.

  Here, the extension IP unit 13 receives some message in the format shown in FIG. 9B from the central control device 16 and sends a message in a predetermined procedure and format in the IP packet to the originating IP telephone 32a via the LAN 5. A process to be created will be described.

  First, when the extension IP unit 13 receives any message in the format shown in FIG. 9B (for example, a ringing tone transmission instruction message), the extension IP unit 13 receives the virtual PKG accommodation position number 73 in the format shown in FIG. The virtual circuit number 74 is extracted, and the corresponding extension number and IP address are obtained from the IP telephone management table shown in FIG. For example, if the virtual PKG accommodation position number is “PKG17” and the virtual circuit number is “ch1”, the IP address of the IP telephone that is the message transmission destination is “192.168.0.11”, and the extension number Becomes “2001”. Then, an IP packet with an IP header addressed to this IP address, the extension number and the message content received from the central controller 16 in the payload portion of the IP packet (call, for example, outgoing call sending instruction message) Is created, and this IP packet is transmitted to the LAN 5 by a predetermined procedure. Then, the originating IP telephone 32a assigned with “192.168.0.11” as the IP address receives this IP packet and performs processing according to the message content stored in the payload portion of the IP packet.

  In the description of the embodiment of the present invention, the extension IP unit 13 receives some message in the format shown in FIG. 9B from the central controller 16, and sends some message to the IP telephone accordingly. In order to create an IP packet, the above processing is performed in the same manner. Thereafter, the extension IP unit 13 receives a message in the format shown in FIG. Description of the transmission procedure is omitted.

  The central control unit 16 instructs the outgoing IP telephone 32a to send a ringing sound and also instructs the incoming multifunction telephone 31a to send a ringing tone (S110). 31a performs the process which rings a ringtone.

  Thereafter, when the incoming multifunction telephone 31a is off-hooked (S111), a response message is transmitted to the central controller 16 (S112). Upon receiving this response message, the central control device 16 controls the time switch 10 (S113) to connect the digital line circuit 13 connected to the incoming multifunction telephone 31a and the extension IP unit 13 (S117). ). At this time, the central control device 16 refers to the use state 206 of the accommodation state management table shown in FIG. 6 and searches for the circuit number (for example, ch1) in the free state in the extension IP unit 13 to determine the time. The switch 10 is instructed to connect a call between the circuit number in the idle state (the voice processing circuit (for example, ch1) in the voice processing unit 13C in FIG. 5) and the incoming multifunction telephone 31a. is doing. Accordingly, in accordance with this processing, the central control unit 16 stores the storage position 201 of the PKG storage position number “PKG16” and the circuit number “ch1” (the circuit number selected by the central control device 16) in the storage state management table shown in FIG. The use state 206 corresponding to is written as “blocked state”.

  Further, the central controller 16 makes the extension IP unit 13 establish information of the call session with the caller IP phone 32a. A channel open message including an “IP address” and a circuit number “ch1” used for a call with the selected outgoing IP telephone 32a is transmitted (S114). As a result, the extension IP unit 13 can exchange voice information with the originating IP telephone 31a via the LAN 5 using the voice processing circuit “ch1” C1 of the voice processing unit 13C and following the RTP procedure of the IP packet. State.

  Further, the central control device 16 is information for designating the extension IP unit 13 that is the other party of the call in order to establish a call session with the extension IP unit 13 for the calling IP telephone 32a. A channel open message including “IP address” is transmitted (S115). This channel open message is sent via the extension IP unit 13, and the extension IP unit 13 receives the channel open message in the format shown in FIG. 9B from the central controller 16, and in response to this. Then, a channel open message in IP packet format is created and transmitted to the originating IP telephone 32a via the LAN 5 (S116). As a result, the originating IP telephone 32a is in a state in which voice information can be exchanged with the extension IP unit 13 via the LAN 5 in accordance with the RTP procedure of the IP packet.

  Then, since the communication path between the extension IP unit 13 and the outgoing IP telephone 32a is established via the LAN 5 in accordance with the IP packet RTP procedure (S118), it is established by the control of the time switch 10 in step S113. In combination with the call path between the digital line circuit 13 connected to the incoming multifunction telephone 31a and the extension IP unit 13, as shown in FIG. 11, the outgoing IP telephone 32a and the incoming multifunction telephone 31a Voice calls can be made between the two.

  When the call is finished and the outgoing IP telephone 32a is on-hooked (S119), the outgoing IP telephone 32a transmits an on-hook message to the extension IP unit 13 (S120). On-hook message is transmitted to 16 (S121).

  Then, the central control device 16 controls the time switch 10 (S122) and transmits a call-ending sound to the incoming multifunction telephone 31a (S123). A channel close message is transmitted to end the call session with 32a (S124). This channel close message includes the “IP address of the calling IP phone 32a” that designates the calling IP phone 32a that is the other party of the call and the circuit number “ch1” that was used for the call with the calling IP phone 32a. The extension IP unit 13 puts the voice processing circuit “ch1” C1 of the voice processing unit 13C into an empty state and ends the RTP procedure of the IP packet. Accordingly, in accordance with this processing, the central controller 16 sets the usage state 206 corresponding to the accommodation position 201 of the PKG accommodation position number “PKG16” and the circuit number “ch1” in the accommodation state management table shown in FIG. And write.

  Further, the central control device 16 is the information for designating the extension IP unit 13 that is the other party of the call in order to end the call session with the extension IP unit 13 for the outgoing IP telephone 32a. A channel close message including “IP address” is transmitted (S125). This channel close message is sent via the extension IP unit 13, and the extension IP unit 13 receives the channel close message in the format shown in FIG. 9B from the central control unit 16, and responds accordingly. Then, a channel close message in the IP packet format is created and transmitted to the originating IP telephone 32a via the LAN 5 (S126). Thereby, the originating IP telephone 32a ends the RTP procedure for the IP packet. In accordance with this processing, the central control device 16 sets the usage state of the IP telephone having the extension number “2001” in the virtual accommodation state management table 21 shown in FIG.

  Thereafter, when the incoming multi-function telephone 31a is on-hooked (S127), the incoming multi-function telephone 31a transmits an on-hook message to the central controller 16 (S128), whereas when the central controller 16 receives it. Then, the incoming multi-function telephone 31a is opened to be in the “vacant state” and the time switch 10 is controlled to stop the transmission of the call end sound to the incoming multi-function telephone 31a (S129), and the process is terminated.

  As described above, one of the IP telephones 32 becomes a calling IP telephone 32a which is a calling terminal, and one of the multi-function telephones is called a receiving multi-function telephone 31a which is a receiving terminal. The operation sequence when doing so has been described.

  Next, a second example of the exchange connection operation in the telephone exchange of the present invention will be described.

  FIG. 12 is a second operation sequence diagram for explaining the exchange connection operation (call connection control) in the telephone exchange device of the present invention. In this operation sequence diagram, one of the multi-function telephones 31 becomes a calling multi-function telephone 31b which is a calling terminal, and one of the IP telephones 32 is an incoming IP telephone 32b which is a receiving terminal. This shows a case where a call is made and a call is made. It is assumed that the incoming IP telephone 32b has previously logged in to the extension IP unit 13 and is ready for use.

  First, when the outgoing multifunction telephone 31b is off-hooked (S201), the outgoing multifunction telephone 31b transmits an off-hook message to the central controller 16 via the digital line circuit 12 (S202). Then, the central controller 16 recognizes that the outgoing multifunction telephone 31b (for example, extension number “1100”) is off-hook, and the multifunction telephone having the extension number “1100” in the accommodation state management table 20 shown in FIG. The usage state is referred to as a “blocked state”.

  Next, when the outgoing multifunction telephone 31b is dialed (S203), the outgoing multifunction telephone 31b transmits a dial message to the central controller 16 (S204). Then, the central control device 16 receives the destination dial from the calling multifunction telephone 31b (extension number “1100”), and refers to the accommodation state management table shown in FIG. 6 and the virtual accommodation state management table 21 shown in FIG. Then, the destination telephone is specified. For example, if the extension telephone number of the destination telephone is “2010” (incoming IP telephone 32b), an incoming message is transmitted to the extension IP unit 13 (S205). The central control device 16 controls the time switch 10 (S207), and sends a ringing tone to the calling multifunction telephone 31b (S208). In accordance with this processing, the central control device 16 sets the use state of the IP telephone having the extension number “2010” in the virtual accommodation state management table 21 shown in FIG.

  On the other hand, when the extension IP unit 13 receives the incoming message in the format shown in FIG. 9B from the central controller 16, as described above, the corresponding extension number and IP address are read from the IP telephone management table shown in FIG. The incoming message is created by a predetermined procedure and format using the IP packet, and transmitted to the incoming IP telephone 32b. Then, the incoming IP telephone 32b outputs a ringing tone.

  Thereafter, when the incoming IP telephone 32b is off-hooked (S209), the incoming IP telephone 32b transmits a response message to the extension IP unit 13 (S210). Then, as described above, the extension IP unit 13 receives the accommodation location number 221 corresponding to the incoming IP phone 32b from the IP phone management table shown in FIG. 8 (the virtual PKG accommodation location number 221A accommodation location number that identifies the outgoing IP phone). The virtual circuit number 221B) is obtained and a response message in the format shown in FIG. 9B is transmitted to the central controller 16 (S211).

  Upon receiving this response message, the central control device 16 controls the time switch 10 (S212) to connect between the digital line circuit 12 connected to the calling multifunction telephone 31b and the extension IP unit 13 (S216). ). At this time, the central control device 16 refers to the use state 206 of the accommodation state management table shown in FIG. 6 and searches for the circuit number (for example, ch1) in the free state in the extension IP unit 13 to determine the time. The switch 10 is instructed to connect a call between the circuit number in the idle state (the voice processing circuit (for example, ch1) in the voice processing unit 13C in FIG. 5) and the calling multifunction telephone 31b. is doing. Accordingly, in accordance with this processing, the central control unit 16 stores the storage position 201 of the PKG storage position number “PKG16” and the circuit number “ch1” (the circuit number selected by the central control device 16) in the storage state management table shown in FIG. The use state 206 corresponding to is written as “blocked state”.

  Furthermore, the central controller 16 makes the extension IP unit 13 establish information about the incoming IP telephone 32b that is the other party in order to establish a telephone conversation session with the incoming IP telephone 32b. A channel open message including an “IP address” and a circuit number “ch1” used for a call with the selected incoming IP telephone 32b is transmitted (S213). As a result, the extension IP unit 13 can exchange voice information with the incoming IP telephone 32b via the LAN 5 using the voice processing circuit “ch1” C1 of the voice processing unit 13C and following the RTP procedure of the IP packet. State.

  Further, the central control device 16 is the information for designating the extension IP unit 13 that is a call partner in order to establish a call session with the extension IP unit 13 for the incoming IP telephone 32b. A channel open message including “IP address” is transmitted (S214). This channel open message is sent via the extension IP unit 13, and the extension IP unit 13 receives the channel open message in the format shown in FIG. 9B from the central controller 16, and in response to this. Then, an IP packet format channel open message is created and transmitted to the incoming IP telephone 32b via the LAN 5 (S215). As a result, the incoming IP telephone 32b is in a state in which voice information can be exchanged with the extension IP unit 13 via the LAN 5 in accordance with the RTP procedure of the IP packet.

  Then, since the communication path between the extension IP unit 13 and the incoming IP telephone 32b is established via the LAN 5 in accordance with the RTP procedure of the IP packet (S217), it is established by the control of the time switch 10 in step S212. The voice call between the incoming IP telephone 32b and the outgoing multifunction telephone 31b becomes possible by combining with the communication path between the digital line circuit 12 to which the outgoing multifunction telephone 31b is connected and the extension IP unit 13. Become. The outline of the connection configuration is the same as that shown in FIG.

  When the call is finished and the outgoing multifunction telephone 31b is on-hooked (S218), the outgoing multifunction telephone 31b transmits an on-hook message to the central controller 16 (S219), and the central controller 16 that has received the message The switch 10 is controlled, and the outgoing multifunction telephone 31b is opened to “empty” (S220).

  Further, the central control device 16 recognizes that the incoming telephone is an IP telephone, so that the end-of-call sound in the format shown in FIG. 9B is output so as to output the end-call sound to the incoming IP telephone 32b. A transmission instruction message is created and transmitted to the extension IP unit 13 (S221). When the extension IP connection unit 13 receives from the central control unit 16 the end sound transmission instruction message in the format shown in FIG. 9B, it creates the end sound transmission instruction message in a predetermined procedure and format using IP packets. This is transmitted to the incoming IP telephone 32b. Then, the incoming IP telephone 32b outputs a call end sound from the receiver.

  Thereafter, when the incoming IP telephone 32b is on-hooked (S223), the incoming IP telephone 32b transmits an on-hook message to the extension IP unit 13 (S224), and the extension IP unit 13 receives this and sends it to the central controller 16. On the other hand, an on-hook message is transmitted (S225).

  Then, the central controller 16 transmits a channel close message to the extension IP unit 13 in order to end the call session with the incoming IP telephone 32b (S226). This channel close message includes the “IP address of the incoming IP telephone 32b”, which is information specifying the incoming IP telephone 32b that is the other party of communication, and the circuit number “ch1” used for the telephone call with the incoming IP telephone 32b. The extension IP unit 13 puts the voice processing circuit “ch1” C1 of the voice processing unit 13C into an empty state and ends the RTP procedure for the IP packet. Accordingly, in accordance with this processing, the central controller 16 sets the usage state 206 corresponding to the accommodation position 201 of the PKG accommodation position number “PKG16” and the circuit number “ch1” in the accommodation state management table shown in FIG. And write.

  In addition, the central control device 16 is information for designating the extension IP unit 13 that is the other party of the call in order to terminate the call session with the extension IP unit 13 for the incoming IP telephone 32b. A channel close message including “IP address” is transmitted (S227). This channel close message is sent via the extension IP unit 13, and the extension IP unit 13 receives the channel close message in the format shown in FIG. 9B from the central control unit 16, and responds accordingly. Then, a channel close message in the IP packet format is created and transmitted to the incoming IP telephone 32b via the LAN 5 (S228). Thereby, the incoming IP telephone 32b ends the RTP procedure of the IP packet. In accordance with this processing, the central control device 16 sets the usage state of the IP telephone having the extension number “2010” in the virtual accommodation state management table 21 shown in FIG.

  As described above, one of the multi-function telephones 31 becomes a calling multi-function telephone 31b as a calling terminal, and one of the IP telephones 32 makes a call from the calling multi-function telephone 31b to the receiving IP telephone 32b as a receiving IP telephone 32b as a receiving terminal. The operation sequence for making a call has been described.

  Next, a third example of the exchange connection operation in the telephone exchange of the present invention will be described.

  FIG. 13 is a third operation sequence diagram for explaining the exchange connection operation (call connection control) in the telephone exchange device of the present invention. In this operation sequence diagram, one of the IP telephones 32 becomes a calling IP telephone 32a that is a calling terminal, and the other one of the IP telephones 32 is a called IP telephone 32b that is a receiving terminal. This shows the case of making a call and making a call. It is assumed that the outgoing IP telephone 32a and the incoming IP telephone 32b have already been logged in to the extension IP unit 13 and are ready for use.

  First, when the originating IP telephone 32a is off-hooked (S301), the originating IP telephone 32a transmits an off-hook message to the extension IP unit 13 via the LAN 5 by a predetermined procedure and format using IP packets (S302). When receiving the off-hook message, the extension IP unit 13 creates an off-hook message to be transmitted to the central control device 16 in the format shown in FIG. 9B and transmits the off-hook message to the central control device 16 (S303). Then, the central controller 16 recognizes that the originating IP telephone 32a (for example, extension number “2001”) is off-hook, and uses the IP telephone having the extension number “2001” in the virtual accommodation state management table 21 shown in FIG. Let the state be a “blocked state”.

  Next, when the originating IP telephone 32a is dialed (S304), the originating IP telephone 32a transmits a dial message to the extension IP unit 13 through the LAN 5 by a predetermined procedure and format using IP packets (S305). The extension IP unit 13 extracts the dial number stored in the received dial message, and also stores the IP address and extension number of the outgoing IP telephone 32a and the corresponding location number 221 from the IP telephone management table shown in FIG. Ask for. Then, a dial message to be transmitted to the central control device 16 is transmitted in the format shown in FIG. 9B (S306).

  Then, the central control device 16 receives the destination dial from the originating IP telephone 32a (extension number “2001”), and refers to the accommodation state management table 20 shown in FIG. 6 and the virtual accommodation state management table 21 shown in FIG. Then, the destination telephone is specified. For example, if the extension telephone number of the destination telephone is “2010” (incoming IP telephone 32b), an incoming message is transmitted to the extension IP unit 13 (S307). In accordance with this processing, the central control device 16 sets the use state of the IP telephone having the extension number “2010” in the virtual accommodation state management table 21 shown in FIG.

  On the other hand, when the extension IP unit 13 receives the incoming message in the format shown in FIG. 9B from the central controller 16, as described above, the corresponding extension number and IP address are read from the IP telephone management table shown in FIG. The incoming message is created by a predetermined procedure and format using the IP packet, and is transmitted to the incoming IP telephone 32b (S308). Then, the incoming IP telephone 32b outputs a ringing tone.

  Further, since central control unit 16 recognizes that the originating telephone is an IP telephone, the ringing sound in the format shown in FIG. 9B is output so as to output a ringing sound to outgoing IP telephone 32a. A transmission instruction message is created and transmitted to the extension IP unit 13 (S309). When the extension IP connection unit 13 receives the ringing tone sending instruction message in the format shown in FIG. 9B from the central controller 16, the extension IP connection unit 13 creates the ringing tone sending instruction message in a predetermined procedure and format using IP packets. This is transmitted to the originating IP telephone 32a (S310). Then, the originating IP telephone 32a outputs a ringing tone from the handset.

  Thereafter, when the incoming IP telephone 32b is off-hooked (S311), the incoming IP telephone 32b transmits a response message to the extension IP unit 13 (S312). Then, as described above, the extension IP unit 13 receives the accommodation location number 221 corresponding to the incoming IP phone 32b (the virtual PKG accommodation location number 221A accommodation location number for identifying the incoming IP phone) from the IP phone management table shown in FIG. The virtual circuit number 221B) is obtained and a response message in the format shown in FIG. 9B is transmitted to the central controller 16 (S313).

  On the other hand, when the central control device 16 receives this response message, the central control device 16 uses the information for designating the incoming IP telephone 32b as the other party to establish a call session with the incoming IP telephone 32b. A channel open message including a certain “IP address of the incoming IP telephone 32b” is transmitted (S314). This channel open message is sent via the extension IP unit 13, and the extension IP unit 13 receives the channel open message in the format shown in FIG. 9B from the central controller 16, and in response to this. Then, a channel open message in the IP packet format is created and transmitted to the originating IP phone via the LAN 5 (S315).

  In addition, the central control device 16 is information “designating the outgoing IP telephone 32a, which is information for designating the outgoing IP telephone 32a that is the other party of communication, in order for the incoming IP telephone 32b to establish a call session with the outgoing IP telephone 32a. A channel open message including “IP address” is transmitted (S316). As described above, this channel open message is sent via the extension IP unit 13, and the extension IP unit 13 receives the channel open message in the format shown in FIG. 9B from the central controller 16. In response to this, a channel open message in the IP packet format is created and transmitted to the incoming IP telephone 32b via the LAN 5 (S317).

  As a result, voice information can be exchanged via the LAN 5 between the outgoing IP telephone 32a and the incoming IP telephone 32b in accordance with the IP packet RTP procedure (S318). In this way, at the time of call connection between the IP telephones, as shown in FIG. 14, the outgoing IP telephone 32a and the incoming IP telephone 32b are directly connected to each other by the IP packet via the LAN 5 without passing through the time switch 10 of the telephone exchange device 1. It is configured to transmit and receive audio information.

  When the call is finished and the outgoing IP telephone 32a is on-hooked (S319), the outgoing IP telephone 32a transmits an on-hook message to the extension IP unit 13 (S320), and the extension IP unit 13 receives the message. An on-hook message is transmitted to the control device 16 (S321). Then, the central control device 16 makes “calling IP phone 32b of the incoming IP phone 32b” information that designates the called IP phone 32b as the other party of call to end the call session with the called IP phone 31b. A channel close message including “IP address” is transmitted (S322). This channel close message is sent via the extension IP unit 13, and the extension IP unit 13 receives the channel close message in the format shown in FIG. 9B from the central control unit 16, and responds accordingly. Then, a channel close message in the IP packet format is created and transmitted to the originating IP telephone 32a via the LAN 5 (S323). Thereby, the originating IP telephone 32a ends the RTP procedure for the IP packet. In accordance with this processing, the central control device 16 sets the usage state of the IP telephone having the extension number “2001” in the virtual accommodation state management table 21 shown in FIG.

  Further, since central control unit 16 recognizes that the incoming telephone is an IP telephone, the end-of-call sound in the format shown in FIG. 9B is output so as to output the end-of-call sound to incoming IP telephone 31b. A transmission instruction message is created and transmitted to the extension IP unit 13 (S324). When the extension IP connection unit 13 receives from the central control unit 16 the end sound transmission instruction message in the format shown in FIG. 9B, it creates the end sound transmission instruction message in a predetermined procedure and format using IP packets. This is transmitted to the incoming IP telephone 32b (S325). Then, the incoming IP telephone 32b outputs a call end sound from the receiver.

  Thereafter, when the incoming IP telephone 32b is on-hooked (S326), the incoming IP telephone 32b transmits an on-hook message to the extension IP unit 13 (S327), and the extension IP unit 13 receives this and sends it to the central controller 16. On the other hand, an on-hook message is transmitted (S328).

  On the other hand, the central control device 16 has the information “designating the outgoing IP telephone 32a of the outgoing IP telephone 32a, which is information for designating the outgoing IP telephone 32a as the other party to terminate the call session with the outgoing IP telephone 32a. A channel close message including “IP address” is transmitted (S329). This channel close message is sent via the extension IP unit 13, and the extension IP unit 13 receives the channel close message in the format shown in FIG. 9B from the central control unit 16, and responds accordingly. Then, a channel close message in the IP packet format is created and transmitted to the incoming IP telephone 32b via the LAN 5 (S330). Thereby, the incoming IP telephone 31b ends the RTP procedure of the IP packet. In accordance with this processing, the central control device 16 sets the usage state of the IP telephone having the extension number “2010” in the virtual accommodation state management table 21 shown in FIG.

  As described above, one of the IP telephones 32 becomes a calling IP telephone 32a that is a calling terminal, and the other one of the IP telephones 32 is called a receiving IP telephone 32b that is a receiving terminal. The operation sequence when doing so has been described.

  Next, another embodiment in which a plurality of extension IP units are mounted will be described.

  When the IP telephone 32 is connected to a non-IP telephone such as the analog telephone 30 or the multi-function telephone 31 or a line of the public telephone network 6, a voice processing unit (voice processing unit 13C shown in FIG. 5) of the extension IP unit is connected. Need to use. For example, in the present embodiment, one extension IP unit 13 has only eight circuits (ch1 to ch8) of voice processing circuits C1 to C8 in the voice processing unit 13C. Connection to a non-IP telephone such as the multi-function telephone 31 or the line of the public telephone network 6 can be made only for 8 calls at the same time, and when a call operation is further performed while 8 calls are made at the same time, it becomes busy. .

  In this embodiment, it is possible to mount a plurality of extension IP units, and according to the number of IP telephones 32 installed and the traffic situation, a plurality of extension IP units are installed to increase the number of simultaneous calls. I try to let them.

  FIG. 15 is an explanatory diagram showing a state in which packages (call circuit, call terminal, etc.) of another embodiment are mounted in the telephone exchange device of the present invention. A difference from the package (call circuit, call terminal, etc.) mounting state shown in FIG. 2 is that the extension IP unit 33 is accommodated in place of the basic ISDN trunk 15 in the PKG accommodation position number 15, and the PKG accommodation position. The extension IP unit 33 is accommodated in the number 15, and the extension IP unit 13 is accommodated in the PKG accommodation position number 16. The extension IP unit 33 is the same as the extension IP unit 13, and its block configuration diagram is the same as the block configuration diagram shown in FIG.

  FIG. 16 is a table stored in the storage device of the telephone exchange device of the present invention, and shows the registration status and usage status of the package (call circuit, call terminal, etc.) when the package is mounted as shown in FIG. It is a figure which shows the accommodation state management table of other embodiment to manage.

  The accommodation state management table in FIG. 16 has the same configuration as the accommodation state management table shown in FIG. Then, the difference from FIG. 6 will be explained. An extension IP unit is also accommodated in the PKG accommodation position number PKG15, and the IP address 205 corresponds to this extension IP unit 33 when connected to the LAN. Information indicating the IP address on the LAN side of the extension IP unit 33 is stored.

  When a plurality of extension IP units are mounted in this way, one of them is registered in the storage device 17 of the telephone exchange device 1 as a call control compatible device (master device). This call control compatible device is an extension IP unit used for call connection control in an exchange operation, and the extension IP units other than the call control compatible device are used only for providing a communication path when performing a voice call. It is. Hereinafter, in the present embodiment, a case where the extension IP unit 13 is registered as a call control compatible device will be described as an example.

  FIG. 17 is a fourth (other embodiment) operation sequence diagram illustrating the exchange connection operation (call connection control) in the telephone exchange device of the present invention. The operation when a plurality of extension IP units (extension IP unit 13 and extension IP unit 33) are installed in the telephone exchange device 1 will be described below with reference to FIG.

  In FIG. 17, first, the incoming multifunction telephone 31a and the extension IP unit 13 are connected via the time switch 10 to establish a communication path (S117), and the extension IP unit 13 and the outgoing IP telephone 32a are connected to the LAN5. A call session is established through the call and a call path is established (S118). That is, the incoming multifunction telephone 31a and the outgoing IP telephone 32a are in a call state. Since the operations from step S117 to step S118 are the same as those from step S101 to step S116 shown in FIG. 10, the description thereof is omitted here.

  In this state, when the calling multifunction telephone 31b is off-hooked (S401), the calling multifunction telephone 31b transmits an off-hook message to the central controller 16 via the digital line circuit 12 (S402). Then, the central control unit 16 recognizes that the outgoing multifunction telephone 31b (for example, extension number “1100”) is off-hook, and the multifunction telephone having the extension number “1100” in the accommodation state management table 20 shown in FIG. The usage state is referred to as a “blocked state”.

  Next, when the calling multifunction telephone 31b is dialed (S403), the calling multifunction telephone 31b transmits a dial message to the central controller 16 (S404). Then, the central control device 16 receives the dial of the called party from the calling multifunction telephone 31b (extension number “1100”), and refers to the accommodation state management table shown in FIG. 16 and the virtual accommodation state management table 21 shown in FIG. Then, the destination telephone is specified. For example, if the extension number of the destination telephone is “2010” (incoming IP telephone 32b), an incoming message is transmitted to the extension IP unit 13 functioning as a call control compatible device (S405). . Further, the central control device 16 controls the time switch 10 (S407) and sends a ringing tone to the calling multifunction telephone 31b (S408). In accordance with this processing, the central control device 16 sets the use state of the IP telephone having the extension number “2010” in the virtual accommodation state management table 21 shown in FIG.

  On the other hand, when the extension IP unit 13 receives the incoming message in the format shown in FIG. 9B from the central controller 16, as described above, the corresponding extension number and IP address are read from the IP telephone management table shown in FIG. The incoming message is created by a predetermined procedure and format using the IP packet, and transmitted to the incoming IP telephone 32b. Then, the incoming IP telephone 32b outputs a ringing tone.

  Thereafter, when the incoming IP telephone 32b is off-hooked (S409), the incoming IP telephone 32b transmits a response message to the extension IP unit 13 (S410). Then, as described above, the extension IP unit 13 receives the accommodation location number 221 corresponding to the incoming IP phone 32b (the virtual PKG accommodation location number 221A accommodation location number for identifying the incoming IP phone) from the IP phone management table shown in FIG. The virtual circuit number 221B) is obtained and a response message in the format shown in FIG. 9B is transmitted to the central controller 16 (S411).

  Upon receiving this response message, the central control device 16 controls the time switch 10 (S412) to connect between the digital line circuit 12 connected to the calling multifunction telephone 31b and the extension IP unit 33 (S416). ). That is, at the time of this connection, the central control device 16 refers to the usage state 206 of the accommodation state management table shown in FIG. 16 and includes the voice processing unit 13C of the extension IP unit 13 and the voice processing unit 13C of the extension IP unit 33. The time switch 10 is searched for the circuit number in the idle state, the voice processing circuit of the circuit number in the idle state (the voice processing circuit in the voice processing unit 13C in FIG. 5), and the calling multifunction telephone A call is instructed to be connected during 31b. In the present embodiment, it is assumed that the central control device 1 has cabled the voice processing circuit “ch8” C8 in the voice processing unit 13C of the extension IP unit 33, and the central control device 16 performs FIG. The usage state 206 corresponding to the accommodation position 201 of the PKG accommodation position number “PKG15” and the circuit number “ch8” (the circuit number of the extension IP unit selected by the central controller 16) in the accommodation state management table shown in FIG. And write.

  Further, the central controller 16 specifies information for the incoming IP telephone 32b that is the other party in order to establish a call session with the incoming IP telephone 32b for the extension IP unit 33 used for setting the voice communication path. A channel open message including the “IP address of the incoming IP telephone 32b” and the circuit number “ch8” used for the call with the selected incoming IP telephone 32b is transmitted (S413). As a result, the extension IP unit 33 uses the voice processing circuit “ch8” C8 of the voice processing unit 13C and can exchange voice information with the incoming IP telephone 32b via the LAN 5 in accordance with the RTP procedure of the IP packet. State.

  The central control device 16 also specifies information for the extension IP unit 33 that is the other party of the call in order to establish a call session with the extension IP unit 33 used for setting the call path of the voice call for the incoming IP telephone 32b. A channel open message including “IP address of extension IP unit 33” is transmitted (S414). This channel open message is sent via the extension IP unit 13, and the extension IP unit 13 receives the channel open message in the format shown in FIG. 9B from the central controller 16, and in response to this. Then, a channel open message in IP packet format is created and transmitted to the incoming IP telephone 32b via the LAN 5 (S415). As a result, the incoming IP telephone 32b is in a state in which voice information can be exchanged with the extension IP unit 33 via the LAN 5 in accordance with the RTP procedure of the IP packet.

  Then, since the communication path between the extension IP unit 33 and the incoming IP telephone 32b is established via the LAN 5 in accordance with the RTP procedure of the IP packet (S417), it is established by the control of the time switch 10 in step S412. In combination with the communication path between the digital line circuit 12 to which the outgoing multifunction telephone 31b is connected and the extension IP unit 33, a voice call can be made between the incoming IP telephone 32b and the outgoing multifunction telephone 31b. Become. The outline of the connection configuration is as shown in FIG.

  The subsequent cutting process is the same as the operation sequence shown in FIG. 10 or FIG.

  The operation when a plurality of extension IP units (extension IP units 13 and 33) are mounted on the telephone exchange device 1 has been described above. In this way, when a plurality of extension IP units are mounted, one of them is a call control compatible device used for call connection control in the switching operation, and extension IP units other than the call control compatible device are used for voice communication By constructing it for use in providing a communication path, it is possible to install a plurality of extension IP units according to the number of installed IP telephones 32 and the traffic situation of calls, and to easily increase the number of simultaneous calls. ing.

1 ... Telephone switching equipment (PBX)
11 ... Line circuit (LIN)
12 ... Digital line circuit (DMTLIN)
13 ... Extension IP unit (SVCU)
14 ... Primary group ISDN trunk (PRI)
15 ... Basic ISDN trunk (ITC)
16 ... Central control unit (CC)
17 ... Memory device (MEM)
18 ... Input / output unit (IOC)
30 ... Analog telephone (TEL)
31 ... Digital multi-function telephone (MFT)
32 ... IP telephone (IP-TEL)
40: Data terminal device 5: Local area network (LAN)
6 ・ ・ ・ Public telephone network

Claims (5)

In a telephone exchange apparatus that accommodates non-IP telephones, manages accommodation position information of the non-IP telephones, and associates telephone numbers with the accommodation position information, thereby performing exchange connection between non-IP telephones.
Virtual accommodation position associating means for virtually assigning accommodation position information to the IP telephone and associating the telephone number of the IP telephone with the virtually assigned accommodation position information;
An IP unit for connecting an IP phone, the IP unit having means for associating the address information of the IP phone with the virtually allocated accommodation location information;
At the time of outgoing or incoming call related to the IP phone, the virtual accommodation location association means is used to read the virtually assigned accommodation location information from the telephone number and to the IP unit according to the virtually assigned accommodation location information. An exchange control means for requesting exchange connection of the IP telephone,
The IP unit obtains address information of an IP telephone subject to exchange control based on the virtually allocated accommodation location information obtained from the exchange control means, and uses the address information to obtain control information related to exchange connection. A telephone exchange apparatus characterized by exchanging information and establishing a communication path of the IP telephone. The IP unit includes a voice processing circuit for setting a speech path between a call with an IP telephone, and a means for establishing a voice speech path with the IP telephone and IP.
The telephone exchange apparatus according to claim 1, wherein a communication path between the IP telephone and the non-IP telephone is set through the voice processing circuit. A plurality of voice processing circuits of the IP unit are provided, and the exchange control means selects one voice processing circuit to be used for establishing a voice communication path when establishing a voice communication path with the IP telephone and the IP. The telephone exchange apparatus according to claim 2, wherein When the exchange control unit recognizes that the exchange connection is between the IP phone and the IP phone, the exchange control unit notifies the address information of the other party to both of the IP phones, and voice is directly transmitted between the IP phone and the IP phone by IP. 2. The telephone exchange device according to claim 1, wherein an instruction is given to establish a speech path. A call of a telephone exchange device that accommodates non-IP telephones, manages accommodation position information of the non-IP telephones, and associates telephone numbers with the accommodation position information, thereby performing exchange connection between the non-IP telephones. In the connection control method,
Virtually assigning accommodation location information to the IP phone, and associating the virtual accommodation location with the IP phone number associated with the virtually assigned accommodation location information,
By associating the IP telephone address information with the virtually allocated accommodation location information by the IP unit connecting the IP telephone,
Upon outgoing or incoming call related to the IP telephone, the virtually assigned accommodation location information is read from the telephone number, and the exchange connection of the IP telephone is requested by the virtually assigned accommodation location information.
In response to the exchange connection request, the IP unit obtains the address information of the IP telephone set subject to exchange control based on the virtually allocated accommodation location information, and uses the address information to control information related to the exchange connection. A call connection control method characterized in that a communication path of the IP telephone is established.

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