JP4059445B2 - Call connection device, call connection system, and call connection program - Google Patents

Description

The present invention relates to a call connection device, a call connection system, and a call connection program. More specifically, the present invention relates to a call connection device, a call connection system, and a call connection program that perform a plurality of call connections compliant with each of a plurality of protocols via a network. About.

  Conventionally, in IPv4, which is one of Internet protocols (hereinafter referred to as “IP”) used in the Internet network, address information (that is, IP address) for identifying a terminal device that communicates via the Internet network is insufficient. In order to solve this shortage of IP addresses, IPv6 capable of setting more IP addresses is proposed instead of IPv4, and terminals and network devices compliant with IPv6 are provided.

  When the Internet network shifts from IPv4 to IPv6, terminals conforming to IPv4 and IPv6 are connected to the Internet network, and communication data is mixedly transmitted in the Internet network. A configuration of a relay device such as a router that can cope with such a network is called an IPv4 / IPv6 dual configuration (also referred to as “IPv4 / IPv6 dual stack”).

  Some IPv4 / IPv6 dual stack relay devices perform IPv4 / IPv6 conversion that mutually converts IPv4 format and IPv6 format so that terminal devices compatible with IPv4 and IPv6 can recognize each other.

For example, the terminal device side that performs IPv4 / IPv6 conversion and recognizes IPv6 is made to recognize the relay device as a DHCP (Dynamic Host Configuration Protocol) server that dynamically assigns an IPv6 address, and the address is actually assigned. On the DHCP server side of IPv4, as a terminal device that recognizes IPv4, a device that recognizes a relay device is known (for example, see Patent Document 1).
JP 2001-274845 A (paragraph numbers 0007 to 0018, FIGS. 1 and 2)

  However, when the Internet network shifts from IPv4 to IPv6, when the terminal conforming to IPv4 and IPv6 is connected to the Internet network and communication data is mixedly transmitted in the Internet network, the above-described conventional technique is used. Then, since communication data to be transmitted always passes through an IPv4 / IPv6 conversion device that performs IPv4 / IPv6 conversion, there is a problem that a load on the IPv4 / IPv6 conversion device increases and a transmission delay occurs.

The present invention can suppress a signal transmission delay related to call connection when a terminal conforming to IPv4 and IPv6 is connected to the Internet network, and communication data is mixedly transmitted in the Internet network. A call connection device, a call connection system, and a call connection program are provided.

The present invention provides a call connection request signal generation unit that generates a plurality of call connection request signals for requesting a call connection to a communication partner based on a telephone number so as to comply with a plurality of protocols, and the call connection request signal generation A call connection request signal transmitter for transmitting a plurality of call connection request signals generated by the communication unit to the communication partner, and a call connection cancellation signal generator for generating a call connection cancellation signal for requesting cancellation of the call connection request; A call connection cancellation signal transmitter for transmitting the call connection cancellation signal to the communication partner, and an incoming signal indicating an incoming call connection request signal transmitted by the call connection request signal transmitter is transmitted from the communication partner to each protocol. An incoming signal selection unit that selects one incoming signal from a plurality of incoming signals that comply with each of the above protocols, and the call connection cancellation signal generator When generating a connection cancellation signal, the call connection to the incoming signal excluding the incoming signal selected by the incoming signal selection unit from among a plurality of incoming signals compliant with each of the protocols transmitted from the communication partner A call connection device, characterized in that a cancellation signal is generated, and the incoming signal selection unit is a means for selecting an incoming signal first received from the communication partner for transmission of the call connection request signal. is there.

The present invention provides a call connection request signal receiving unit that receives a plurality of call connection request signals generated and transmitted by a communication partner so as to comply with a plurality of protocols, and the call connection request signal reception unit receives the call connection request signal from the communication partner. A call connection request signal detection unit for detecting a call connection request signal transmitted from the same communication partner within a predetermined time from a plurality of call connection request signals, and a plurality of call connections detected by the call connection request signal detection unit A call connection request signal selection unit that selects one call connection request signal from among the request signals, and an incoming call signal that indicates an incoming call for the call connection request signal selected by the call connection request signal selection unit. A call connection device comprising: a signal generation unit; and an incoming signal transmission unit that transmits the incoming signal to the communication partner.

The present invention provides a call connection request signal generation unit that generates a plurality of call connection request signals for requesting a call connection to a communication partner based on a telephone number so as to comply with a plurality of protocols, and the call connection request signal generation A first call connection device including a call connection request signal transmission unit for transmitting a plurality of call connection request signals generated by the communication unit to the communication partner, and a call connection request signal for requesting a call connection from the communication partner. A call connection request signal receiving unit for receiving and a call connection for detecting a call connection request signal transmitted by the same communication partner within a predetermined time from a plurality of call connection request signals received by the call connection request signal receiving unit. A request signal detection unit; a call connection request signal selection unit that selects one call connection request signal from a plurality of call connection request signals detected by the call connection request signal detection unit; and the call connection request signal selection unit Selected call connection A second call connection device comprising an incoming signal generation unit that generates an incoming signal indicating an incoming call in response to a solicitation signal and an incoming signal transmission unit that transmits the incoming signal to the communication partner is connected to a network. A call connection system.

The present invention can suppress a signal transmission delay related to call connection when a terminal conforming to IPv4 and IPv6 is connected to the Internet network, and communication data is mixedly transmitted in the Internet network. There is an effect.

  The best mode for carrying out the invention is the following examples.

  FIG. 1 is a block diagram showing a configuration of a call connection system 1 that is Embodiment 1 of the present invention.

  The call connection system 1 includes a terminal device 2, a network 3, a call connection device 4, a counterpart terminal device 5, a call connection device 6, and a call connection server 7.

  The terminal device 2 is a terminal device configured by a telephone or the like, and the call connection device 4 is provided between the network 3 and the terminal device 2. The counterpart terminal 5 is configured by a telephone or the like, and the call connection device 6 is provided between the network 3 and the counterpart terminal device 5. The call connection server 7 is a server that relays a signal related to call connection transmitted and received between the call connection device 4 and the call connection device 6.

  In order to facilitate understanding of the present invention, a simple configuration is shown in FIG. 1, but a plurality of terminal devices, a plurality of call connection devices, a plurality of counterpart terminal devices, a plurality of call connection devices, and a plurality of call connections are shown. The call connection system 1 may have a connection server.

  The call connection system 1 performs call connection in conformity with SIP (refer to Session Initiation Protocol, RFC3261), and the call connection device 4 passes through the call connection server 7 based on the telephone number input from the terminal device 2. Thus, a call connection is made to the call connection device 6, whereby a call can be made between the terminal device 2 and the partner terminal device 5.

  FIG. 2 is a functional block diagram showing the configuration of the call connection device 4 which is an embodiment of the present invention.

  The call connection device 4 includes a terminal interface 11, a network interface 12, a call connection control unit 13, and a media processing unit 14.

  The terminal interface 11 transmits and receives media such as audio signals and control signals to and from the terminal device 2. The network interface 12 is an interface that transmits and receives signals to and from devices such as the call connection device 6 connected to the network 3.

  The call connection device 13 controls the call connection. That is, the call connection device 13 transmits / receives a signal based on the SIP to / from the call connection server 7 via the network interface 12, so that the call connection device 6 communicates with the call connection device 6. Establish a call connection.

  When the call connection is established, the media processing unit 14 processes the media based on the established call connection information. That is, when the call connection control unit 13 establishes a call connection with the call connection device 6, the media processing unit 14 can transmit an audio signal input via the terminal interface 11 to the Internet network. Packetized and transmitted to the partner terminal device 5 via the network interface 12.

  In addition, when the call connection control unit 13 establishes a call connection with the call connection device 6, the media processing unit 14 converts a packet input via the network interface 12 into a voice signal, and uses the terminal interface 11. Then, the converted audio signal is transmitted to the terminal device 2.

  FIG. 3 is a functional block diagram illustrating a configuration of the call connection control unit 13 provided in the call connection device 4.

  The call connection control unit 13 includes a call connection request signal generation unit 15, a call connection request signal transmission unit 16, a call connection cancellation signal generation unit 17, a call connection cancellation signal transmission unit 18, and an incoming signal selection unit 19. Have.

  The call connection request signal generation unit 15 generates a plurality of call connection request signals for requesting a call connection to a communication partner based on a telephone number so as to comply with a plurality of protocols. Specifically, the call connection request signal generation unit 15 generates IP packets conforming to IPv4 and IPv6, respectively, constituting the method “INVITE” indicating the call connection request signal conforming to the SIP.

  The call connection request signal transmission unit 16 transmits a plurality of call connection request signals generated by the call connection request signal generation unit 15 to the communication partner. Further, the call connection request signal transmission unit 16 sends the IP packet compliant with IPv4 and the IP packet compliant with IPv6 generated by the call connection request signal generation unit 15 to the call connection device 6 via the network interface 12. Send.

  The call connection server 7 receives the call connection request signal transmitted by the call connection request signal transmission unit 16, and the call connection server 7 sends the call connection device 6 to the call connection device 6 based on the telephone number included in the call connection request signal. Relay call connection request signal.

  Here, when the call connection device 6 cannot cope with the protocol that the call connection request signal complies with, the call connection server 7 transmits a response code indicating an error to the call connection device 4.

  In addition, a call connection response signal (response code “180 Ringing” or “200 OK”) indicating a response to the call connection request signal (INVITE) transmitted by the call connection request signal transmitter 16 is sent via the network interface 12. When received by the connection control unit 13, the call connection control unit 13 packetizes a signal related to call connection in accordance with the protocol to which the call connection request signal conforms, and the media processing unit 14 transmits the call connection request signal. Packetize media according to a protocol that is compliant.

  Here, when the call connection device 6 is compatible with a plurality of protocols such as IPv4 and IPv6, a call connection request signal composed of an IP packet compliant with IPv4, and IPv6 When the call connection device 6 transmits to the call connection device 4 a call connection response signal corresponding to a call connection request signal composed of an IP packet that conforms to the IP packet, the call connection device 4 is duplicated between the call connection device 4 and the call connection device 6. Call connection may be established.

  In order to prevent this call connection duplication, the call connection control unit 13 includes a call connection cancellation signal generation unit 17, a call connection cancellation signal transmission unit 18, and an incoming signal selection unit 19.

  The call connection cancellation signal generation unit 17 generates a call connection cancellation signal for requesting cancellation of a call connection request. The call connection cancellation signal transmission unit 18 transmits the call connection cancellation signal to the communication partner. When a plurality of incoming signals indicating the arrival of the call connection request signal transmitted by the call connection request signal transmission unit 16 are transmitted from the communication partner in accordance with a plurality of protocols, the incoming signal selection unit 19 converts the plurality of protocols into a plurality of protocols. One incoming signal is selected from the compliant incoming signals.

  Here, when the call connection cancellation signal generation unit 17 generates the call connection cancellation signal, among the plurality of incoming signals (response code “180 Ringing”) compliant with each of the protocols transmitted from the communication partner, the incoming signal A call connection cancellation signal is generated for incoming signals excluding the incoming signal selected by the selection unit 19.

  The incoming signal selection unit 19 selects the incoming signal received first from the communication partner from the call connection request signals transmitted by the call connection request signal transmission unit 16.

  For example, first, an incoming signal for a call connection request signal configured by an IP packet compliant with IPv4 is received by the call connection control unit 13, and then a call configured by an IP packet compliant with IPv6. When the call connection control unit 13 receives an incoming signal for the connection request signal, the incoming signal selection unit 19 selects the incoming signal for the call connection request signal configured by an IP packet conforming to IPv4.

  In addition, the call connection cancellation signal generation unit 17 generates a call connection cancellation signal (method “CANCEL”) for a call connection request signal composed of an IP packet compliant with IPv6, and the call connection cancellation signal transmission unit 18 Then, the call connection cancellation signal is transmitted to the call connection device 6.

  FIG. 4 is a flowchart showing an operation of transmitting a call connection request signal in the call connection device 4.

  Note that the following call connection request signal transmission operation starts when the telephone number of the communication partner is received from the terminal device 2 via the terminal interface 11.

  First, the call connection request signal generation unit 15 generates a plurality of call connection request signals for requesting a call connection to a communication partner based on a telephone number in accordance with each of a plurality of protocols (S1, S2, S4). ).

  Each call connection request signal generated by the call connection request signal generation unit 15 is transmitted to the communication partner by the call connection request signal transmission unit 16 via the network interface 12 (S3).

  FIG. 5 is a flowchart showing an operation of receiving an incoming signal in the call connection device 4.

  The incoming signal reception operation shown in FIG. 5 starts when a communication partner such as the call connection device 6 transmits an incoming signal and is received by the network interface 12.

  First, whether the received incoming signal is the first received within a predetermined time from the same communication partner with respect to the transmission of the call connection request signal by the call connection request signal transmission unit 16 is determined. The selection unit 19 determines (S10). The predetermined time is, for example, a time within 0.1 seconds, and the predetermined time may be set to a time within 1 second.

  When it is determined that the received incoming signal is the first incoming signal received from the communication partner for the transmission of the call connection request signal, the call connection control unit 13 communicates with the call connection device 6. Then, call connection processing is performed (S11).

  On the other hand, if it is determined that the received incoming signal is not the incoming signal received from the same communication partner for the transmission of the call connection request signal, the call connection cancellation signal is generated as the call connection cancellation signal. The unit 17 generates (S12), and the call connection cancellation signal transmission unit 18 transmits the generated connection cancellation signal to the communication partner via the network interface 12 (S13).

  FIG. 6 is a block diagram showing a more specific hardware configuration of the call connection device 4.

  In addition to the terminal interface 11 and the network interface 12, the call connection device 4 includes a central processing unit 30 (hereinafter referred to simply as “CPU”), an analog / digital converter 31, a flash memory 32, and a ROM. (Read Only Memory) 33, RAM (Random Access Memory) 34, an input device 35, and an output device 36 such as a liquid crystal display device.

  The CPU 30 loads a call connection program that causes the call connection device 4 to execute the call connection request signal transmission operation and the call connection request signal reception operation from the ROM 33 to the RAM 34, and executes the call connection program loaded to the RAM 34. 3 realizes the call connection request signal generation unit 15, the call connection request signal transmission unit 16, the call connection cancellation signal generation unit 17, the call connection cancellation signal transmission unit 18, and the incoming signal selection unit 19 shown in FIG.

  The CPU 30 and the analog-digital converter 31 constitute the media processing unit 14 shown in FIG.

  The analog-digital converter 31 mutually converts an analog signal and a digital signal. The input device 35 is a push button or the like.

As described above, according to the call connection device 4 of the first embodiment, a call connection is requested by a plurality of call connection request signals compliant with each of a plurality of protocols, so that the time required for protocol conversion is reduced. . That is, since the protocol is not converted, a signal transmission delay related to call connection can be suppressed.

  FIG. 7 is a block diagram showing a configuration of a call connection system 41 that is Embodiment 2 of the present invention.

  In the call connection system 41, the same components as those in the call connection system 1 are denoted by the same reference numerals, and the description thereof is omitted.

  The call connection system 41 is a system in which call connection devices 44 and 46 are provided in place of the call connection devices 4 and 6 in the call connection system 1.

  That is, the call connection system 41 includes the terminal device 2, the call connection device 44 provided between the network 3 and the terminal device 2, the counterpart terminal device 5, and the network 3 and the counterpart terminal device 5. A call connection device 46 and a call connection server 7 are provided.

  The call connection system 41 performs call connection in accordance with SIP, and the call connection device 44 connects to the call connection device 46 via the call connection server 7 based on the telephone number input from the terminal device 2. Thus, a call can be made between the terminal device 2 and the partner terminal device 5.

  FIG. 8 is a functional block diagram showing the configuration of the call connection device 44.

  In the call connection device 44, the same components as those of the call connection device 4 are denoted by the same reference numerals, and the description thereof is omitted.

  The call connection device 44 is a device in which a call connection control unit 53 is provided instead of the call connection control unit 13 in the call connection device 4.

  That is, the call connection device 44 includes the terminal interface 11, the network interface 12, the call connection control unit 53, and the media processing unit 14.

  The call connection control unit 53 controls the call connection, that is, transmits and receives a SIP-compliant signal to and from the call connection server 7 via the network interface 12, so that the call connection control unit 53 communicates with the call connection device 6. Establish a call connection.

  FIG. 9 is a functional block diagram showing the configuration of the call connection control unit 53.

  In the call connection control unit 53, the same components as those of the call connection control unit 13 are denoted by the same reference numerals, and the description thereof is omitted.

  The call connection control unit 53 includes a call connection request signal generation unit 15 and a call connection request signal transmission unit 16.

  In the call connection control unit 53, as described in the first embodiment, a duplicate call connection may be established between the call connection device 44 and the call connection device 46. In the call connection system 41, the call connection device 46 prevents duplicate establishment of call connections between the call connection device 44 and the call connection device 46.

  FIG. 10 is a functional block diagram illustrating the configuration of the call connection device 46 according to the second embodiment.

  The call connection device 46 includes a terminal interface 61, a network interface 62, a call connection control unit 63, and a media processing unit 64.

  The terminal interface 61 transmits and receives media such as audio signals and control signals to and from the partner terminal device 5. The network interface 62 transmits and receives signals to and from devices such as the call connection device 44 connected to the network 3.

  The call connection control unit 63 controls the call connection, that is, transmits and receives a signal conforming to the SIP to and from the call connection server 7 via the network interface 62. Establish a call connection.

  When the call connection is established, the media processing unit 64 processes the media based on the established call connection information. That is, the media processing unit 64 allows the call connection control unit 63 to transmit an audio signal input via the terminal interface 61 to the Internet network when a call connection with the call connection device 44 is established. Then, it is packetized and transmitted to the terminal device 2 via the network interface 62. Further, when the call connection control unit 63 establishes a call connection with the call connection device 44, the media processing unit 64 converts a packet input via the network interface 62 into a voice signal, and this conversion. The voice signal thus transmitted is transmitted to the counterpart terminal device 5 via the terminal interface 61.

  FIG. 11 is a functional block diagram illustrating a configuration of the call connection control unit 63 according to the second embodiment.

  The call connection control unit 63 includes a call connection request signal reception unit 65, a call connection request signal detection unit 66, a call connection request signal selection unit 67, an incoming signal generation unit 68, and an incoming signal transmission unit 69.

  The call connection request signal receiving unit 65 receives a call connection request signal for requesting a call connection from a communication partner.

  The call connection request signal detection unit 66 detects a call connection request signal transmitted from the same communication partner within a predetermined time from a plurality of call connection request signals received by the call connection request signal receiving unit 65. The predetermined time is, for example, a time within 0.1 seconds, and the predetermined time may be within 1 second.

  The call connection request signal selection unit 67 selects one call connection request signal from the plurality of call connection request signals detected by the call connection request signal detection unit 66.

  The incoming signal generation unit 68 generates an incoming signal indicating that the call connection request signal selected by the call connection request signal selection unit 67 has arrived. The incoming signal transmission unit 69 transmits an incoming signal to the communication partner.

  When the call connection request signal detection unit 66 detects the call connection request signal, the call connection request signal detection unit 66 detects the call connection request signal based on the transmission source information indicating the transmission source of the call connection request signal (that is, the From header added to INVITE). To do. When the call connection request signal detection unit 66 detects the call connection request signal, the call connection request signal is determined based on the call connection identifier for identifying the call connection (that is, the Call-ID header added to INVITE). You may make it detect. In this case, the call connection request signal generation unit 15 of the call connection device 44 adds a Call-ID header to each of the generated INVITEs so that the call connection request signal for the same communication partner can be identified. May be.

  Specifically, the call connection request signal generation unit 15 of the call connection device 44 is included in the Call-ID header as “123@10.0.0.0”, “123 @ 10: 0: 0”. A call connection request signal having the same identifier before the delimiter “@” is assigned.

  The call connection request signal selection unit 67 selects a call connection request signal transmitted from the same communication partner (that is, the same call connection device 44) and first received by the call connection request signal reception unit 65.

  For example, first, the call connection request signal receiving unit 65 receives a call connection request signal composed of an IP packet conforming to IPv4, and then, the call connection request composed of an IP packet conforming to IPv6. When the call connection request signal reception unit 65 receives the signal, the call connection request signal selection unit 67 selects a call connection request signal constituted by an IP packet compliant with IPv4.

  In response to the call connection request signal selected by the call connection request signal selection unit 67, the incoming signal generation unit 68 generates an incoming signal (response code “180 Ringing”) indicating an incoming call, and the incoming signal transmission unit 69 generates this signal. The received incoming signal is transmitted to the call connection device 44 via the network interface 62.

  On the other hand, for the call connection request signal that is not selected by the call connection request signal selection unit 67, the incoming signal generation unit 68 generates a call connection rejection signal indicating rejection of the call connection, and the incoming signal transmission unit 69 The generated call connection rejection signal is transmitted to the call connection device 44 through the network interface 62.

  FIG. 12 is a flowchart illustrating an operation in which the call connection device 46 receives a call connection request signal in the second embodiment.

  The following call connection request signal reception operation is started when the call connection request signal transmitted from the call connection device 44 is received by the call connection request signal receiver 65 via the network interface 62.

  First, the call connection request signal detection unit 66 and the call connection request signal selection unit 67 determine whether or not the received call connection request signal is a call connection request signal first received from the communication partner ( S20).

  When the received call connection request signal is first received from the call communication partner and is determined to be the call connection request signal, the incoming signal generation unit 68 generates an incoming signal (S21), and the generated incoming call is received. The incoming signal transmission unit 69 transmits the signal to the call connection device 44 via the network interface 62 (S22).

  On the other hand, if it is not determined that the received call connection request signal is the call connection request signal received first from the call communication partner, the incoming signal generation unit 68 generates a call connection rejection signal (S23). The incoming signal transmission unit 69 transmits the generated call connection rejection signal to the communication partner via the network interface 62 (S24).

  Specific hardware configuration examples of the call connection device 44 and the call connection device 46 are the same as the configuration of the call connection device 4 in the first embodiment, and thus illustration thereof is omitted.

  The CPU of the call connection device 46 loads the call connection program described to cause the call connection device 46 to execute the call connection request signal reception operation from the ROM to the RAM, and loads the call connection program into the RAM. Is implemented, the call connection request signal receiver 65, the call connection request signal detector 66, the call connection request signal selector 67, the incoming signal generator 68, and the incoming signal transmitter 69 shown in FIG. 11 are realized.

  In the call connection system 41, the call connection device 44 and the call connection device 46 have been described as different devices from each other, but may have the functions of each other. That is, the call connection controller 53 of the call connection device 44 includes a call connection request signal receiver 65, a call connection request signal detector 66, a call connection request signal selector 67, an incoming signal generator 68, and an incoming signal transmitter 69. You may have.

  The call connection control unit 63 of the call connection device 46 may include the call connection request signal generation unit 15 and the call connection request signal transmission unit 16.

  As described above, according to the call connection system 41, since the call connection device 44 is requested to call connection by a plurality of call connection request signals compliant with each of the protocols, the time required for protocol conversion is reduced. It is possible to suppress a signal transmission delay related to call connection.

  The above embodiment can be grasped as a program invention. That is, in the above embodiment, a call connection request signal generating step for generating a plurality of call connection request signals for requesting a call connection to a communication partner based on a telephone number so as to comply with a plurality of protocols, respectively, and the call connection It is an example of the call connection program which makes the call connection apparatus which performs the call connection via a network perform the step which transmits the several call connection request signal produced | generated at the request signal production | generation step to the said communicating party.

In the above embodiment, a call connection request signal for requesting call connection is received from a communication partner and stored therein, and a plurality of call connection request signals received in the call connection request signal reception step. A call connection request signal detection step for detecting and storing a call connection request signal transmitted by the same communication partner within a predetermined time, and a plurality of call connection request signals detected in the call connection request signal detection step. A call connection request signal selection step for selecting and storing one call connection request signal from among the above, and an incoming call signal indicating an incoming call is generated for the call connection request signal selected by the call connection request signal selection step, An incoming call signal generation step for storing and an incoming call signal transmission step for transmitting the incoming call signal to the communication partner are executed by a call connection apparatus that performs a call connection device that performs call connection via a network. It is an example of a gram.

The call connection device, call connection system, and call connection program are related to the router device in the home connected to the IP network for realizing the IP telephone service, and the line connection service industry and communication related to the relay device such as the VoIP terminal adapter. It can be used for service industry, IP network service industry, IP network relay device manufacturing industry, VoIP software manufacturing industry, VoIP software sales industry, and the like.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows the call connection system 1 which is Example 1 of this invention. It is a functional block diagram which shows the structure of the call connection apparatus 4 which is an Example of this invention. 3 is a functional block diagram illustrating a configuration of a call connection control unit 13 provided in the call connection device 4. FIG. 4 is a flowchart showing an operation of transmitting a call connection request signal in the call connection device 4. 6 is a flowchart showing an operation of receiving an incoming signal in the call connection device 4; 3 is a block diagram showing a more specific hardware configuration of a call connection device 4. FIG. It is a block diagram which shows the structure of the call connection system 41 which is Example 2 of this invention. 3 is a functional block diagram showing a configuration of a call connection device 44. FIG. 3 is a functional block diagram showing a configuration of a call connection control unit 53. FIG. 6 is a functional block diagram illustrating a configuration of a call connection device 46 in Embodiment 2. FIG. 10 is a functional block diagram illustrating a call connection control unit 63 in Embodiment 2. FIG. 10 is a flowchart illustrating an operation in which the call connection device 46 receives a call connection request signal in the second embodiment.

Explanation of symbols

1, 41 ... call connection system,
2 ... terminal device,
3 ... Network,
4, 6, 44, 46 ... call connection device,
5 ... Counterpart terminal device,
7: Call connection server,
11, 61 ... terminal interface,
12, 62 ... Network interface,
13, 53, 63 ... call connection control unit,
14, 64 ... Media processing unit,
15: Call connection request signal generator,
16: Call connection request signal transmitter,
17 ... Call connection cancellation signal generator,
18 ... Call connection cancellation signal transmitter,
19: Incoming signal selection unit,
30 ... CPU,
31 ... analog / digital converter,
32 ... Flash memory,
33 ... ROM,
34 ... RAM,
35 ... input device,
36 ... output device,
65 ... a call connection request signal receiving unit,
66 ... Call connection request signal detection unit,
67 ... Call connection request signal selection unit,
68. Incoming signal generator,
69: An incoming signal transmission unit.

Claims (12)

A call connection request signal generation unit for generating a plurality of call connection request signals for requesting a call connection to a communication partner based on a telephone number so as to comply with a plurality of protocols;
A call connection request signal transmitter for transmitting a plurality of call connection request signals generated by the call connection request signal generator to the communication partner;
A call connection cancellation signal generator for generating a call connection cancellation signal for requesting cancellation of the call connection request;
A call connection cancellation signal transmitter for transmitting the call connection cancellation signal to the communication partner;
When a plurality of incoming signals indicating the arrival of the call connection request signal transmitted by the call connection request signal transmission unit are transmitted from the communication counterpart in accordance with each protocol, a plurality of incoming signals in accordance with each of the protocols An incoming signal selection unit for selecting one incoming signal from;
And when the call connection cancellation signal generation unit generates the call connection cancellation signal, the incoming signal selection unit selected from the plurality of incoming signals compliant with each of the protocols transmitted from the communication partner. Generate the call connection cancellation signal for the incoming signal excluding the incoming signal,
The call connection device, wherein the incoming signal selection unit is means for selecting an incoming signal received first from the communication partner for transmission of the call connection request signal. A call connection request signal receiving unit that receives a plurality of call connection request signals generated and transmitted by the communication partner so as to comply with a plurality of protocols ;
A call connection request signal detecting unit for detecting a call connection request signal transmitted by the same communication partner within a predetermined time from a plurality of call connection request signals received by the call connection request signal receiving unit;
A call connection request signal selection unit that selects one call connection request signal from a plurality of call connection request signals detected by the call connection request signal detection unit;
An incoming signal generation unit that generates an incoming signal indicating an incoming call in response to the call connection request signal selected by the call connection request signal selection unit;
An incoming signal transmitter for transmitting the incoming signal to the communication partner;
A call connection device comprising: In claim 2 ,
The call connection apparatus, wherein the call connection request signal selection unit is a selection unit that selects a call connection request signal first received by the call connection request signal reception unit from the communication partner. In claim 2 or claim 3 ,
The call connection request signal detection unit is a detection unit that detects a call connection request signal transmitted by the same communication partner based on transmission source information indicating a transmission source of the call connection request signal. Connected device. In claim 2 or claim 3,
The call connection apparatus, wherein the call connection request signal detection unit is a detection unit that detects a call connection request signal transmitted by the same communication partner based on a call connection identifier for identifying the call connection. In any one of Claims 2-5 ,
The incoming signal generation unit is a generation unit that generates a call connection rejection signal indicating rejection of call connection for a call connection request signal that is not selected by the call connection request signal selection unit,
The call connection device, wherein the incoming signal transmission unit is a transmission unit that transmits the call connection rejection signal to the communication partner. A call connection request signal generation unit that generates a plurality of call connection request signals for requesting a call connection to a communication partner based on a telephone number, and a call connection request signal generation unit that generates the call connection request signals. A first call connection device comprising a call connection request signal transmission unit for transmitting a plurality of call connection request signals to the communication partner;
A call connection request signal receiving unit that receives a call connection request signal from a communication partner and a plurality of call connection request signals received by the call connection request signal reception unit are assigned to the same communication partner. A call connection request signal detection unit for detecting a call connection request signal transmitted in time, and a call for selecting one call connection request signal from among a plurality of call connection request signals detected by the call connection request signal detection unit A connection request signal selection unit, an incoming signal generation unit that generates an incoming signal indicating an incoming call in response to the call connection request signal selected by the call connection request signal selection unit, and an incoming call that transmits the incoming signal to the communication partner. A second call connection device comprising a signal transmission unit;
Is connected to a network. In claim 7,
The call connection system, wherein the call connection request signal selection unit is a selection unit that selects a call connection request signal first received by the call connection request signal reception unit from the communication partner. In claim 7 or claim 8,
The call connection request signal detection unit is a detection unit that detects a call connection request signal transmitted by the same communication partner based on transmission source information indicating a transmission source of the call connection request signal. Connection system. In claim 7 or claim 8 ,
The call connection system, wherein the call connection request signal detection unit is a detection unit that detects a call connection request signal transmitted by the same communication partner based on a call connection identifier for identifying the call connection. In any one of Claims 7-10 ,
The incoming signal generation unit is a generation unit that generates a call connection rejection signal indicating rejection of call connection for a call connection request signal that is not selected by the call connection request signal selection unit,
The call connection system, wherein the incoming signal transmission unit is a transmission unit that transmits the call connection rejection signal to the communication partner. The call connection program which makes a computer function as each means which comprises the call connection apparatus of any one of Claims 1-6, or the call connection system of any one of Claims 7-11. .

Images