JP2006237891A - Ip network communication system and ringer tone switching method in ip network communication system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an IP network communication system capable of switching ringer tones in response to a call type of a communication terminal of a caller side and a ringer tone switching method of the IP network communication system. <P>SOLUTION: In the IP network communication system provided with a plurality of communication terminals connected to an IP network, a call control server connected to the IP network and carrying out communication control between the communication terminals, and end point apparatuses connected between the IP network and the communication terminals, each end point apparatus includes: a ringing pattern management means for managing a plurality of ringing patterns set in response to the call types of caller terminals; and a ringer tone switching means that informs the end point apparatus of a called side about ringer tone identification information attached in response to the call type of the caller communication terminal, selects one of the ringing patterns from the ringing pattern management means on the basis of the ringer tone identification information, transmits the selected ringing pattern to the called communication terminal, and rings a different ringer tone from the call type of the caller communication terminal. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to communication for performing call control using VoIP (Voice Over Internet Protocol) on a private network of an IP (Internet Protocol) network, in particular, an IP network using SIP (Session Initiation Protocol) as a call control protocol. The present invention relates to a technique for ringing ringtones in a communication system.

2. Description of the Related Art Conventionally, in a telephone exchange connected to an IP network (hereinafter referred to as “VoIP network”) and a public switched telephone network (hereinafter referred to as “PSTN network”), for example, an exchange is made for incoming calls from outside lines. Depending on the type of the communication terminal on the sending side, such as a station relay station device that connects / transfers to the extension after the hand responds or responds once, and the call type of the communication terminal on the sending side such as an extension, dedicated line, or external line, for example Thus, there has been a ringing tone switching technique that realizes ringing of ringtones at the communication terminal on the receiving side.
Specifically, the call type of the communication terminal on the calling side (incoming / external from an extension or dedicated line (hereinafter referred to as “office line”) to extension / direct inward dialing (DID: Direct In Dial) The incoming call from the communication terminal on the receiving side is switched according to the incoming call / direct inline (DIL) / incoming from the PBX dial-in. Is a technology for distinguishing between the two.

  FIG. 14 is a diagram for explaining a ringing tone splitting technique in an IP network communication system that enables conventional ring tone switching.

A conventional IP network communication system 1400 is connected to each of a VoIP network 1401 and a PSTN network 1402, and communication terminals 1403 (1403 a and 1403 b) connected to the VoIP network 1401 and communication terminals connected to the PSTN network 1402. 1404. Further, the VoIP network 1401 includes a call control server 1405 that performs call control, and an endpoint device 1406 (1406a, 1406b) connected between the VoIP network 1401 and a communication terminal 1403 connected to the VoIP network 1401. These configurations constitute the IP network communication system 1400.
In the conventional IP network communication system 1400, if the endpoint device 1406b on the receiving side is an incoming call from an extension via the VoIP network 1401, for example, an extension call signal (SIR: stipulated in a business telecommunications facility) Detects frequency and signal transmission interval corresponding to Second Inter Ringing, and if it is an incoming call from the outside line via the PSTN network 1402, an outside line calling signal (IR: Inter Ringing) defined by the business telecommunications equipment By detecting the frequency and signal transmission interval corresponding to the above, and distinguishing between incoming calls from the PSTN network and incoming calls from the VoIP network, ringing of ringtones at the communication terminal is performed.

That is, in the conventional ringing tone switching technique in the VoIP device, it is determined whether the incoming call has passed through the VoIP network or the PSTN network, and then a ringing pattern to be transmitted to the telephone line is determined. By specifying each, switching of the ringtone of the communication terminal on the receiving side was realized. In other words, the ring tone switching technology in the conventional VoIP device is equipped with a PSTN network interface for emergency connection of emergency number dial (emergency call) for fire fighting or first aid when the VoIP network makes a detour connection to the PSTN network due to a failure or the like. It was limited to the case.
JP-A-11-275231 J. et al. Rosenberg, “SIP: Session Initiation Protocol”, [online], June 2002, [February 15, 2005 search] Internet <URL: http: // www. ietf. org / rfc / rfc3261. txt? number = 3261> M.M. Arango, “Media Gateway Control Protocol (MGCP) Version 1.0”, [online], May 1999, [February 15, 2005 search] Internet <URL: http: // www. ietf. org / rfc / rfc2705. txt? number = 2705> ITU-T recommendation 323

However, none of the conventional technologies described above has a PSTN network interface, or when communication is performed in a communication system via only a VoIP network, only the call control signal information exchanged at the time of establishment of the communication line is an external line. It was not possible to determine whether the call was received from an internal line or from an extension / dedicated line, and it was not possible to switch the ringtone according to the caller's communication terminal type and call type.
In other words, since the callee cannot identify the call type of the other party who made the call from the ringtone of the telephone terminal, the caller cannot distinguish between the outside telephone from outside and the extension telephone from inside the company. The company name or department name response could not be specified.

  Therefore, in view of the problems of the conventional example described above, the present invention enables ringing of ringtones even in an IP network communication system that does not have a PSTN network interface or communicates only through a VoIP network. It is an object of the present invention to provide an IP network communication system and a ringing tone switching method in the IP network communication system.

  In order to solve the above-described problem, according to a representative example of an IP network communication system according to the present invention, a plurality of communication terminals connected to an IP network, a network connected to the IP network, and communication terminals In an IP network communication system comprising a call control server that performs communication control and an endpoint device connected between an IP network and a communication terminal, the terminating endpoint device is the call type of the originating communication terminal A ring pattern management means for holding a plurality of ring patterns set according to the received ring tone identification information added according to the call type of the communication terminal on the caller side, and the ring tone identification information From the ring pattern management means, one of the ring patterns is selected, and the selected ring pattern is transmitted to the communication terminal on the receiving side. Comprising a ringtone switching means for performing sound classification of the incoming sound corresponding to the call type of the communication terminal.

  Further, according to one of the representative ring tone switching methods in the IP network communication system according to the present invention, a plurality of communication terminals connected to the IP network, a communication terminal connected to the IP network Of an incoming call tone according to the call type of a communication terminal on the originating side in an IP network communication system comprising a call control server for performing communication control between and an endpoint device connected to an IP network and also connected to a communication terminal In the ringing tone switching method for performing ringing, a step in which a caller communication terminal transmits call type information of a caller communication terminal together with a connection request to a call control server, and a call control server receives an incoming call based on the call type information Generating the sound identification information and notifying the incoming end device of the ringtone identification information generated together with the connection request; From the ring pattern management means that is provided in the point device in advance and manages a plurality of ring patterns set according to the call type of the communication terminal, one of the ring patterns corresponding to the notified ring tone identification information is selected, Transmitting the selected ringing pattern to the receiving communication terminal.

  Furthermore, according to another example of the ring tone switching method in the IP network communication system according to the present invention, a plurality of communication terminals connected to the IP network, and communication between the communication terminals connected to the IP network. In the IP network communication system comprising a call control server for performing control and an endpoint device connected to the IP network and connected to the communication terminal, ringing of ringtones according to the call type of the communication terminal on the transmission side is performed. In the ringing tone switching method to be performed, a step in which a communication terminal on the transmission side transmits a connection request and call type information of the communication terminal on the transmission side to the endpoint device on the transmission side; The ring tone identification information is generated based on the information, and the ring tone identification information generated together with the connection request is passed to the endpoint device on the receiving side via the call control server. And a ringing pattern corresponding to the notified ringing tone identification information from a ringing pattern managing means for managing a plurality of ringing patterns set in advance according to the call type of the communication terminal. And transmitting the selected ringing pattern to the communication terminal on the receiving side.

  With these configurations, according to the IP network communication system and ringtone switching method of the present invention, it is possible to switch ringtones according to the call type of the communication terminal on the originating side in any IP network communication system. Become.

  According to the present invention, it is possible to switch the ring tone according to the call type of the communication terminal on the calling side regardless of the presence of the interface and the type of the communication network to be connected. It is possible to identify the call type of the caller from the ring tone.

  The best mode for carrying out the present invention will be described below. Hereinafter, in the best mode for carrying out the present invention, an IP network communication system using SIP as a call control protocol will be described as an example.

  Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings of FIGS.

  FIG. 1 is a configuration diagram showing a configuration of an IP network communication system 100 according to the first embodiment of the present invention, and FIG. 2 is a ring tone information notification method using the IP network communication system 100 according to the first embodiment. It is the schematic for demonstrating.

  FIG. 3 is a sequence diagram showing ringing of ringtones in the IP network communication system 100 according to the first embodiment of the present invention via an endpoint device connected to a communication terminal on the transmission side. FIG. 4 is a diagram showing the contents of messages exchanged between the call control server and the called endpoint device in the sequence described with reference to FIG.

  FIG. 5 is a diagram for explaining a table including ringing pattern types according to a calling device and a call type provided in the call control server 104 to which ring tone identification information is added, and FIG. 6 is an IP-PBX connected to an IP network. It is a sequence diagram which shows ringing of the ringtone in the case of passing through an apparatus.

FIG. 7 is a block diagram showing each component constituting the IP network communication system 100 according to the present invention. Each block notifies the end point device of the ring tone identification information from the call control server, and the received ring tone is notified. 3 shows a configuration related to realizing the ringing of the receiving communication terminal based on the identification information.
In any figure, the same numerals are given to the same composition.

  The IP network communication system 100 according to the first embodiment of the present invention includes a communication terminal 102 (102a, 102b, 102c) on the transmission side and a communication terminal 103 on the reception side connected to the VoIP network 101. In the IP network communication system 100 according to the first embodiment, a call control server 104 that controls communication between these communication terminals is connected to the VoIP network 101.

  Between the call control server 104 and the communication terminals 102 and 103, via the VoIP network 101, a SIP-compatible IP telephone adapter, a VoIP gateway having an analog / private line / office line interface, a personal computer-based soft phone, SIP endpoint devices 105 (105a, 105b, 105c) and 106 including a wireless (wireless) IP phone are connected.

  1 is connected to the call control server 104 via the VoIP network 101, and the other is connected to a plurality of different types of lines 108 (station line 108a / dedicated line 108b). IP-PBX device 107 having an interface to which / extension line 108c) is connected.

  The call control server 104 manages terminal types and call types on the PBX interface side of the SIP endpoint devices 105 and 106 and the IP-PBX device 107, and is connected to the VoIP network 101 as shown in FIG. IP communication control unit 701, SIP control unit 702 and IP-PBX control unit 703 connected to IP communication control unit 701, call control unit 704 connected to SIP control unit 702 and IP-PBX control unit 703, call control unit The data management unit 705 includes a management database 201 that manages the identification number of a communication terminal such as a telephone number transmitted from the network 704, the call type, and the IP address.

  The IP communication control unit 701 of the call control server 104 controls IP packets transmitted and received from the VoIP network 101, and the SIP control unit 702 controls SIP endpoint devices connected to the VoIP network 101. The IP-PBX control unit 703 performs communication control with an IP-PBX device connected to the VoIP network 101, and the call control unit 704 performs management of each call state and number translation. The data management unit 705 includes telephone number information of SIP endpoint devices and IP-PBX devices connected to the VoIP network 101, correspondence between IP addresses and telephone numbers, terminal type / call type, and ring tone identification information from the call type. The management database 201 is managed, the management database 201 is referred to based on the identification number transmitted from the communication terminal 102 on the transmission side, and the corresponding ring tone identification information is transmitted to the call control unit 704.

  The SIP endpoint device 106 is connected to an IP communication control unit 711 connected to the VoIP network 101, a SIP control unit 712 connected to the IP communication control unit 711, and a SIP control unit 712, as shown in FIG. A call control unit 713, a data management unit 715 including a ring pattern management database 714 for managing a plurality of ring patterns (frequency and signal transmission interval), and a hardware control unit 716 connected to the communication terminal 103 on the receiving side.

  The IP communication control unit 711 and the call control unit 713 of the SIP endpoint device 106 are similar to the IP communication control unit 701 and the call control unit 704 of the call control server 104, and the IP communication control unit 711 transmits and receives IP packets from the VoIP network 101. The call control unit 713 performs management of each call state, number translation, and the like. The SIP control unit 712 performs communication control of packet transmission / reception among the call control server, SIP endpoint device, and IP-PBX device connected to the VoIP network 101. The data management unit 715 includes a ring pattern management database 714 that manages ring tone identification information in association with ring patterns that associate frequencies and signal transmission intervals defined according to each call type, and notifies the call control server 104 of notifications. Based on the received ring tone identification information, the ringing pattern management database 714 is referred to and a corresponding ringing pattern is transmitted to the call control unit 713. The hardware control unit 716 performs interface control with the communication terminal 103 on the incoming side, and instructs the communication terminal 103 on the incoming side to ring the ringing tone based on the ringing pattern managed in the ringing pattern management database 714. 730 is performed.

  The IP-PBX device 107 is a device having both an IP function and a conventional PBX function, and the PBX interface side has a station line (DID / DIL / PBX dial-in), a dedicated line, an extension line, etc. of the conventional PBX. Realize the function. As shown in FIG. 7, the IP-PBX device 107 includes an IP communication control unit 721 connected to the VoIP network 101, a call control unit 722 connected to the IP communication control unit 721, and a PBX connected to the call control unit 722. A data management unit 725 including a number translation database 724 that is connected to each of the communication control unit 723, the IP communication control unit 721, the call control unit 722, and the PBX communication control unit 723 and manages telephone number information, call types, IP addresses, and the like. With.

  The IP communication control unit 721 of the IP-PBX device 107 controls IP packets transmitted and received from the VoIP network 101 and generates an IP-PBX message. The call control unit 722 performs management of each call state and number translation. Do. The PBX communication control unit 723 performs communication control and service function control of the extension, dedicated line, and office line of the PBX interface, and the data management unit 725 manages number translation information of the extension, dedicated line, station line, and call control server. And a number translation database 724 for managing number information (IP address, telephone number, ringing tone identification information, etc.) as message contents to be given to the IP-PBX message.

  In the following, the call control server 104, the IP-PBX device 107, and the SIP endpoint devices 105 and 106 are connected to the VoIP network 101 with the use of FIG. How to do will be described.

  First, at the time of call connection, the call control server 104 pre-determines in advance from the terminal type and call type on the calling side based on the type information (terminal type and call type) of the calling side communication terminal transmitted from the calling side communication terminal together with the connection request. Information for identifying the corresponding ringtone for which data is set (hereinafter referred to as “ringtone identification information”) is generated and notified to the SIP endpoint device 106 on the receiving side.

The SIP endpoint device 106 on the called side selects one of the ring patterns set from the ring pattern management means that holds the ring pattern in advance based on the notified ring tone identification information, and sends the frequency to the telephone accommodating line. , Send the signal transmission interval, and ring the ringtone.
In the ringing pattern management means of the SIP endpoint device 106 on the receiving side, an external line calling signal (IR) and an internal line calling signal (SIR), an incoming call transfer warning signal: an external line individual incoming signal (TIR: Third Inter Ringing), and other ringing Each pattern (preliminary) ringing pattern is set in advance, and the call type of the calling communication terminal is confirmed by distinguishing the frequency and signal transmission interval corresponding to these ringing patterns. Note that the electrical conditions of the IR, SIR, and TIR call signals are as defined in the commercial telecommunications equipment.

Next, a method for notifying ringtone identification information using a SIP control signal will be described with reference to FIG.
In the ring tone identification information notification method of FIG. 2, for example, a telephone number, a SIP-URI, etc. provided for each of the caller side communication terminals 102 and the caller side communication are provided in the call control server 104. Based on the management database 201 that manages the call types of the terminals 102 in association with each other, the call control server 104 generates ring tone identification information 205 that is set in the SIP message according to the terminal type and call type of the communication terminal on the caller side. And grant. The management database 201 manages a table in which an identification number assigned to each communication terminal 102 on the transmission side is associated with a corresponding call type.

  When making a call, a call control signal 202 including an SIP message is transmitted from the communication terminal 102 on the caller side to the call control server 104. The call control server 104 that has received the call control signal 202 from the caller communication terminal 102 generates ringtone identification information according to the terminal type and call type of the caller communication terminal, and receives the ringtone identification information 205 in the SIP message. Is transmitted to the endpoint device 106 on the receiving side.

  As a result, the ring tone identification information 205 is notified to the SIP endpoint device 106 on the receiving side, and the SIP endpoint device 106 that has received the notification transmits it from the call control server 104 in the ring pattern management means provided in itself. By selecting a ringing pattern corresponding to the received ringing tone identification information and transmitting the selected ringing pattern to the communication terminal 103 on the receiving side, the ringing tone corresponding to the call type of the communication terminals 102a to 102c on the calling side can be obtained. Realize separation.

  When the IP-PBX device 107 is used without going through the SIP endpoint device 105, a call control signal used for exchange between the IP-PBX device 107 and the call control server 104 is not a SIP message but a non-standard message ( Hereinafter, a call control signal 203 including “IP-PBX message” is used.

  Next, a notification sequence of ringtone identification information in the IP network communication system according to the first embodiment will be described with reference to the drawings.

FIG. 3 is a diagram for explaining a sequence on the caller side of the SIP endpoint device 105.
In the first embodiment in which SIP is used as the call control protocol, as shown in FIG. 3, in the notification of ring tone identification information from the call control server 104 to the SIP endpoint device 106, the SIP sequence “F2 INVITE ( Session establishment request) message "is used.

  The call control server 104 refers to the call type from the identification number (telephone number) assigned to the communication terminal 102 on the caller side, and adds the ring tone identification information that matches the terminal type / call type to the F2 INVITE message. The ring tone identification information is notified to the SIP endpoint device 106.

  In SIP, it is possible to add a non-standard data field by using an extension parameter starting with a text-based “X”. Therefore, in the IP network communication system 100 of this embodiment, this “X” Using the parameters, the call control server 104 notifies the SIP endpoint device 106 of the ring tone identification information. In the IP network communication system 100 according to the first embodiment, ringing tone ringing at the receiving communication terminal is realized by setting ringing tone identification information in this extended parameter.

FIG. 4 shows a specific example of SIP message contents exchanged between the call control server 104 and the SIP endpoint device 106.
In FIG. 4, the character string of “X-RingerType: TypeN” 401 is the ring tone identification information. In the present embodiment, ringtone identification information (X-RingerType: TypeN) is prepared for each set ringing pattern. In the present embodiment, four patterns of type 1 (Type 1) = IR, type 2 (Type 2) = SIR, type 3 (Type 3) = TIR, type 4 (Type 4) = others are prepared.
In the SIP endpoint device 106 of this embodiment, a ringing pattern suitable for each type is selected and transmitted to the telephone accommodating line, and a call with a predetermined ringing tone is instructed to the communication terminal 103 on the receiving side. Switch sounds.

  FIG. 5 is a management table 500 including ringing pattern types depending on a transmission device and a call type provided in the call control server 104 to which ring tone identification information is added.

  In the call control server 104 to which the ring tone identification information is added, the call type in the communication terminal 102 on the caller side, the ring tone identification information (X-RingerType) to be added to the SIP message, and the SIP endpoint device 106 on the call side are A table 500 is provided that manages the ringing pattern type transmitted to the communication terminal 103 on the called side in association with each other. In the IP network communication system 100 according to the present embodiment, a SIP message including ringtone identification information is generated based on this table 500.

  The SIP message generated in this way is transmitted to the terminating SIP endpoint device 106, and the ringing pattern provided in the terminating SIP endpoint device 106 based on the ring tone identification information included in the SIP message. A corresponding predetermined ringing pattern is selected by the management means. Furthermore, in the IP network communication system of the present invention, the incoming communication terminal 103 is instructed to receive a ringing tone based on the selected ringing pattern, so that the incoming communication terminal 103 becomes the outgoing communication terminal 102a. It is possible to call a ring tone according to the call type of ˜102c.

  As described above in detail, according to the IP network communication system and the ring tone switching method in the first embodiment of the present invention, regardless of the presence or absence of an interface and the type of communication network to be connected, communication on the calling side is performed. It is possible to switch the ring tone according to the call type of the terminal, and as a result, it is possible to identify the call type on the calling side from the ring tone of the communication terminal.

  In the case where the IP-PBX device 107 is the calling side, the call control server 104 refers to the call type on the PBX interface side of the IP-PBX device as shown in the sequence shown in FIG. By assigning the ringtone identification information that matches the type to the “F2 INVITE message”, it is possible to realize ringing of ringtones in the communication terminal on the called side. In this case, the ringing tone identification is realized by notifying the SIP endpoint device 106 of the ringing tone identification information and setting the ringing tone identification information in the extension parameter.

  Further, according to the IP network communication system and the ring tone switching method in the first embodiment in which the call control server 104 provides ring tone identification information according to the call type of the caller communication terminal, the call end server Even when a device that does not support setting of the ring tone identification information is used as the point device, the corresponding ring tone identification information can be assigned by the call control server 104. Even a device can achieve ringing of incoming calls. That is, it is possible to realize ringing of ringtones in the IP network communication system regardless of the performance, standard, and manufacturer of the endpoint device.

  Next, an IP network communication system and a ring tone switching method according to the second embodiment of the present invention will be described with reference to FIGS.

FIG. 8 is a configuration diagram showing the configuration of the IP network communication system 800 in the second embodiment of the present invention, and FIG. 9 is a ring tone information notification method using the IP network communication system 800 in the second embodiment. It is the schematic for demonstrating.
FIG. 10 is a sequence diagram showing ringing of ringtones in the IP network communication system 800 according to the second embodiment of the present invention via an endpoint device connected to a communication terminal on the caller side. 11 is a diagram showing the contents of messages exchanged between the transmission-side endpoint device and the call control server in the sequence described with reference to FIG.
FIG. 12 is a sequence diagram showing ringing of ringtones in the case of passing through an IP-PBX device connected to the IP network of the IP network communication system 800 according to the second embodiment of the present invention. It is a figure which shows the message content exchanged between the IP-PBX apparatus which is a transmission side, and a call control server in the sequence demonstrated in FIG.
In addition, the same code | symbol is attached | subjected to the structure similar to 1st Embodiment mentioned above, and the detailed description is abbreviate | omitted.

  In the first embodiment, the call control server 104 manages the terminal type / call type of the SIP endpoint device 105, and provides ringtone identification information to the SIP endpoint device 106 on the receiving side when the call is connected. Notifications were used to switch ringtones. On the other hand, as shown in FIG. 8, in the IP network communication system 800 according to the second embodiment of the present invention, the call control server 801 does not notify the ring tone identification information, but the SIP endpoint device on the caller side. 802 (802a, 802b, 802c) notifies the ring tone identification information from the terminal / call type information of its own to the SIP endpoint device 805 on the receiving side, thereby distinguishing the ring tone. It is realized.

  Also in the IP network communication system 800 of the second embodiment, one is connected to the call control server 801 via the VoIP network 101, and the other is connected to a plurality of different types of lines 804 (station lines 804a / An IP-PBX device 803 having an interface to which the dedicated line 804b / extension line 804c) is connected and having a function of notifying terminal / call type information on the calling side is provided.

  Hereinafter, the notification method of the ring tone identification information in the second embodiment will be described in detail with reference to FIG.

  In the ring tone identification information notification method of FIG. 9, the SIP endpoint device 802 or the IP-PBX device 803 on the transmission side is, for example, the IP-PBX device 803 and the SIP endpoint device 802 that are the endpoint devices on the transmission side. The identification number assigned to each communication terminal that is transmitted through each line 804 (station line 804a / dedicated line 804b / extension line 804c) connected to the IP-PBX device 803 and the call of the calling communication terminal The first management database 901a that manages the types in association with each other, or the call type of the communication terminal on the outgoing side provided in the outgoing side SIP endpoint device 802, for example, connected to the outgoing side SIP endpoint device 802 Based on one of the second management databases 901b to be managed, SIP message or IP- BX generated imparting ringtone identification information set in accordance with the terminal type and the call type of the calling communication terminal to the message. Note that the management database 901 is provided with a table similar to the table 500 shown in FIG. 5 in the first embodiment, and based on this table, a SIP message or IP-PBX containing ringtone identification information is provided. A message is generated.

  At the time of outgoing call, the caller side communication terminal 102 notifies the caller side SIP endpoint device 802 of the terminal type / call type information of the caller side communication terminal 102. The call control signal 902 in which the predetermined ring tone identification information is added to the SIP message via the call control server 801 is generated by referring to the management database 901 table of Transmit to the endpoint device 805.

  In the IP network communication system according to the second embodiment, the call control server 801 passes the ring tone identification information notified by the SIP endpoint device 802 on the caller side as it is. The ringing tone identification information 905 given by the caller SIP endpoint device 802 is notified to the callee SIP endpoint device 805, and the ringing pattern management means in the SIP endpoint device 805 selects the corresponding ringing pattern. Then, the selected ringing pattern is notified to the communication terminal on the receiving side, thereby realizing ringing of the ringing tone according to the call type.

  Also in the IP network communication system of the second embodiment, when the caller is not the SIP endpoint device 802 but the IP-PBX device 803, the call control signal 903 in which the ring tone identification information is added to the IP-PBX message. And the call control server 801 converts the information notified from the IP-PBX device 803 into SIP ringing tone identification information, thereby notifying the SIP endpoint device 805 on the called side and responding to the call type. Realize different ringtones.

  Next, a notification sequence of ringtone identification information in the IP network communication system according to the second embodiment will be described with reference to FIG.

  In the second embodiment using SIP as a call control protocol, a ringing tone identification information is generated in the originating SIP endpoint device 802, and a session establishment request message is transmitted from the originating SIP endpoint device 802. (F2 INVITE message) is added with ringtone identification information and the call control server 801 is notified of the ringtone identification information, and the “F2 INVITE message” with the ringtone identification information added is the SIP endpoint device on the receiving side. 805 is notified. The ringing of the ringing tone is realized in the same sequence as in the first embodiment described above except that the ringing tone identification information is added and transmitted by the SIP endpoint device 802 on the calling side.

  Also, as shown in FIG. 11, the content of the SIP message exchanged between the SIP endpoint device 802 on the caller side and the call control server 801 is the same as in FIG. 4, and using the “X” parameter, By setting ringtone identification information (X-RingerType: TypeN 1100) as an extension parameter, ringing of ringtones at the communication terminal on the receiving side is realized.

  Further, also in the sequence in the case where the caller is the IP-PBX device 803, as shown in FIG. 12, the ring tone identification information (RingerType N) is added to the connection message transmitted from the IP-PBX device 803, and the call control server The call control server 801 converts the information notified from the IP-PBX device 803 into ringtone identification information included in the SIP message (F2 INVITE message) and transmits it to the SIP endpoint device 805 on the called side. By making a notification, the ringing of ringtones is realized.

Note that the connection message transmitted from the IP-PBX device 803 is an IP-PBX (non-standard) message as shown in FIG.
The RingerType value (RingerType N 1300) is added to the IP-PBX message from the call type of the PBX side interface and notified to the call control server 801. Upon receiving the IP-PBX message, the call control server 801 converts the notified ring tone identification information (RingerType N) into the character string “X-RingerType: TypeN” of the SIP INVITE message, and receives the SIP endpoint device on the called side. 805 is notified.

  As described above in detail, in the IP network communication system and ringtone switching method according to the second embodiment of the present invention as well, regardless of the presence of an interface and the type of communication network to be connected, the communication terminal on the transmission side It is possible to switch the ring tone according to the call type, and as a result, the call type on the calling side can be identified from the ring tone of the communication terminal. In addition, in the second embodiment in which the ring tone identification information is assigned by the SIP endpoint device 802 and the IP-PBX device 803 on the caller side, the first is given the ring tone identification information by the call control server 104. Compared to the case of this embodiment, ringing of ringtones can be realized even in a small-scale VoIP network configured without using a call control server, and it can be applied on the communication terminal side. Reduction of software processing to the control server and reduction of the management database can also be realized, and further effects can be achieved.

  In the first embodiment and the second embodiment of the present invention, the example applied to the call control server and SIP endpoint device corresponding to SIP has been shown. -RingerType: Type N "(ringing tone identification information) is supported to be applicable to all SIP-compatible devices.

  In addition, as a VoIP call control protocol, H.264 is used. It is also possible to apply H.323. In this case, the call control server (gatekeeper / IP-PBX server) and the H.264 H.323 endpoint devices, By using NonStandardData which is non-standard data of the H.323 message, it is possible to notify ringtone identification information.

  In a first embodiment of the present invention, In the case of using H.323, the gatekeeper / IP-PBX server adds ringtone identification information to the NonStandardData data field. The ring tone identification information is notified to the H.323 endpoint device. In the second embodiment of the present invention, H. In the case of using H.323, H.323. The H.323 end point device adds ringtone identification information to the NonStandardData data field, and the H.323 terminal device receives the H.264 via the gatekeeper / IP-PBX server. The ring tone identification information is notified to the H.323 endpoint device. The H. The H.323 endpoint device realizes ringing based on the ring tone identification information.

  Furthermore, in the present invention, MGCP can be applied as a VoIP call control protocol. It is possible to notify the ring tone identification information between the call control server (call agent / IP-PBX server) in MGCP and the MGCP endpoint device by using the “X” parameter which is an extended parameter of the MGCP message. Become.

  In the first embodiment of the present invention, when MGCP is used, the call agent / IP-PBX server adds ringtone identification information to the “X” parameter of the extension parameter, and identifies the ringtone for the MGCP endpoint device. Notify information. Further, in the second embodiment of the present invention, when MGCP is used, the MGCP endpoint device adds ringtone identification information to the “X” parameter of the extension parameter, and the MGCP is transmitted via the call agent IP-PBX server. The ring tone identification information is notified to the endpoint device. The MGCP end point device on the called side realizes ringing based on the ring tone identification information.

  In addition, in the method of the second embodiment, the VoIP endpoint device on the calling side adds ringtone identification information according to the type information (terminal type / call type) of the communication terminal on the calling side. However, using the same method as in the second embodiment, the VoIP endpoint device on the calling side uses the calling side communication terminal instead of the ring tone identification information corresponding to the type information of the communication terminal on the calling side. It is possible to realize ringing of ringtones for each caller by providing a configuration for assigning information representing the attribute of the caller.

  For example, the attribute type of the calling communication terminal is set to Type1 = family, Type2 = friend, Type3 = company, Type4 = other, and the ringing pattern is family = SIR, friend = IR, company = TIR and others = other ringtones By setting to, the other party call type can be identified from the ring tone of the telephone terminal before answering. In this case, the ringing tone identification information can be added by using the database by managing three types of type 1 (family), type 2 (friend), and type 3 (company) for each destination telephone number in the database. Each type is assigned when the obtained number matches the above three types, and when the numbers do not match, Type 4 (other) is assigned. This ringing tone method can be applied mainly to the public network IP telephone network (050 network).

  Furthermore, in the second embodiment, the case where the ring tone identification information corresponding to the terminal / call type of the terminal device on the caller side is given as an example has been described. In addition, for example, the endpoint device on the called side adds the identification information (ringing tone identification information) corresponding to the call type of the communication terminal on the called side to the SIP sequence “F5 / F6 180 Ringing”. Switching between medium tones (RBT: Ring Back Tone) is also possible. By realizing ringing of the ringing sound in this way, as a result, there is an effect that even if the call type cannot be specified from the other party telephone number, the call type of the called party can be specified from the ringing sound. It becomes possible.

It is a block diagram which shows the structure of the IP network communication system in 1st Embodiment. It is the schematic explaining the ringtone information notification method using the IP network communication system in 1st Embodiment. FIG. 5 is a sequence diagram showing ringing of ringtones in the IP network communication system according to the first embodiment when an endpoint device connected to a communication terminal on the caller side is used. FIG. 4 is a diagram showing message contents exchanged between the call control server and the called endpoint device in the sequence described in FIG. 3. It is a figure explaining the table containing the ringing pattern classification by the transmission apparatus and call classification provided in the call control server 104 which provides ringtone identification information in the IP network communication system in 1st Embodiment. It is a sequence diagram which shows ringing of the ringtone in the case of going through the IP-PBX apparatus connected to the IP network in the IP network communication system in 1st Embodiment. It is the block diagram which showed each component which comprises the IP network communication system of this invention. It is a block diagram which shows the structure of the IP network communication system in 2nd Embodiment. It is the schematic explaining the ringtone information notification method using the IP network communication system in 2nd Embodiment. It is a sequence diagram which shows ringing of the ringtone in the case of passing through the end point apparatus connected to the communication terminal of the transmission side in the IP network communication system in 2nd Embodiment. It is a figure which shows the message content exchanged between the transmission side endpoint apparatus and a call control server in the sequence demonstrated in FIG. It is a sequence diagram which shows ringing of the ringtone in the case of passing through the IP-PBX apparatus connected to the IP network of the IP network communication system in 2nd Embodiment. It is a figure which shows the message content exchanged between the IP-PBX apparatus which is a transmission side, and a call control server in the sequence demonstrated in FIG. It is a figure explaining the ringing technique of the ringtone in the IP network communication system which enables the conventional ringtone switching.

Explanation of symbols

100 IP network communication system 101 VoIP networks 102a, 102b, 102c, 103 communication terminals
104 Call control server 105a, 105b, 105c, 106 Endpoint device
107 IP-PBX device 108a Office line 108b Dedicated line 108c Extension line

Claims (11)

A plurality of communication terminals connected to the IP network, a call control server connected to the IP network and performing communication control between the communication terminals, and connected between the IP network and the communication terminal In an IP network communication system comprising an endpoint device to be
The endpoint device on the called side has ringing pattern management means for holding a plurality of ringing patterns set according to the call type of the communication terminal on the calling side,
While receiving ringtone identification information added according to the call type of the communication terminal on the calling side,
Based on the ring tone identification information, select one of the ring patterns from the ring pattern management means,
A ring tone switching unit is provided for performing ringing of ringtones according to the call type of the caller communication terminal by transmitting the selected ringing pattern to the callee communication terminal. IP network communication system.   2. The IP network communication system according to claim 1, wherein the ring tone identification information is given by the call control server. The IP network communication system according to claim 2, wherein the call control server manages an identification number assigned to each of the caller communication terminals and a call type of the caller communication terminal in association with each other. Have
Based on the identification number assigned to the caller communication terminal notified from the caller communication terminal to the management database, the call type of the caller communication terminal is determined, and the ring tone identification information is obtained. An IP network communication system, comprising: generating an IP network communication system. 2. The IP network communication system according to claim 1, wherein the ringing pattern includes an outside line transmission pattern and an extension or dedicated line transmission pattern. 2. The IP network communication system according to claim 1, wherein the call control server is connected to an IP-PBX device that realizes a telephone exchange function on the IP network. .   2. The IP network communication system according to claim 1, wherein the ring tone identification information is given by the endpoint device on the receiving side. 7. The IP network communication system according to claim 6, wherein the transmission-side endpoint device associates and manages an identification number assigned to each communication terminal on the transmission side and a call type of the communication terminal on the transmission side. A first management database, or a second management database for managing a call type of the communication terminal on the transmission side connected to the endpoint device on the transmission side,
Based on the identification number assigned to the caller communication terminal notified from the caller communication terminal to the first management database, the call type of the caller communication terminal is determined to determine the ring tone. An IP network communication system, wherein identification information is generated or the ring tone identification information is generated by discriminating a call type of the communication terminal on the transmission side based on the second management database. A plurality of communication terminals connected to the IP network, a call control server connected to the IP network and performing communication control between the communication terminals, and connected to the IP network, the communication terminal In a ring tone switching method for ringing a ring tone according to the call type of the communication terminal on the caller side in an IP network communication system comprising an endpoint device to be connected,
The communication terminal on the transmission side transmits call type information of the communication terminal on the transmission side to the call control server together with a connection request;
The call control server generating ringtone identification information based on the call type information, and notifying the ringtone identification information generated together with the connection request to the endpoint device on the receiving side;
The ringing pattern corresponding to the ringing tone identification information notified from the ringing pattern management means that manages a plurality of ringing patterns set in advance according to the call type of the communication terminal, which is prepared in advance in the endpoint device on the receiving side. And a step of transmitting the selected ringing pattern to the communication terminal on the incoming side, and a ringtone switching method in an IP network communication system. 9. The ring tone switching method according to claim 8, wherein the call control server has a management database for managing an identification number assigned to each of the caller communication terminals and a call type of the caller communication terminal in association with each other. Has
Based on the identification number assigned to the originating communication terminal notified to the management database from the originating communication terminal transmitted with the connection request, the call type of the originating communication terminal is determined. A ring tone switching method in an IP network communication system, wherein the ring tone identification information is generated. A plurality of communication terminals connected to the IP network, a call control server connected to the IP network and performing communication control between the communication terminals, and connected to the IP network, the communication terminal In a ring tone switching method for ringing a ring tone according to the call type of the communication terminal on the caller side in an IP network communication system comprising an endpoint device to be connected,
The communication terminal on the transmission side transmits a connection request and call type information of the communication terminal on the transmission side to the endpoint device on the transmission side;
The originating endpoint device generates ring tone identification information based on the call type information, and notifies the terminating tone identification information generated together with the connection request to the terminating endpoint device via the call control server. And steps to
The ringing pattern corresponding to the ringing tone identification information notified from the ringing pattern management means that manages a plurality of ringing patterns set in advance according to the call type of the communication terminal, which is prepared in advance in the endpoint device on the receiving side. And a step of transmitting the selected ringing pattern to the communication terminal on the incoming side, and a ringtone switching method in an IP network communication system. 11. The ring tone switching method according to claim 10, wherein the calling-side endpoint device associates and manages an identification number assigned to each of the calling-side communication terminals and a call type of the calling-side communication terminal. A first management database or a second management database for managing a call type of the communication terminal on the transmission side connected to the endpoint device on the transmission side;
Based on an identification number assigned to the caller communication terminal transmitted from the caller communication terminal to the first management database together with the connection request, the call type of the caller communication terminal is determined. Generating the ringtone identification information, or determining the call type of the communication terminal on the caller side based on the second management database, and generating the ringtone identification information. Ringtone switching method in.

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