JP2001186194A - Information communication system and switching connection method for information communication system - Google Patents

Abstract

(57) [Problem] To provide an information communication system capable of continuing call control by another call control device when one of a plurality of call control devices fails and stops. In an information communication system in which a plurality of multimedia terminals, one or a plurality of public network connection devices, and a plurality of call control devices are arranged on a LAN, one of the plurality of call control devices is used as an active system. And the other is operated by the standby system. Then, when a failure occurs in the active call control device, when the manual system switching is performed, or when the automatic system switching activation time comes, the switching to the standby system call control device is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to an information communication system accommodating a plurality of types of multimedia terminals, and a method for switching and connecting the information communication system, with an occupied by an "Oral Area Network" as a core.

[0002]

2. Description of the Related Art With the development of the Internet and the like, systems for accessing various information service providers from a user terminal to a computer of an information service provider via a public network and receiving desired information services are increasing. Similarly, a user's telephone is used to make a telephone call to a computer system of an information service provider, and an information service or a commodity transaction by voice response is performed.

As an example of such an information service system, a computer system of an information service provider is constructed by a plurality of operator terminals, a server computer storing various service information and control information, a PBX for performing information exchange connection, and the like. Then, the PBX is connected to a public network, and a user terminal and an operator terminal of the public network are connected via the PBX to transmit and receive information.

However, building a system using a PBX is very expensive. Therefore, a multi-unit having a function of transmitting / receiving voice or video, or voice / video information to / from a public network connection device (router device) on a LAN. A telephone or PC terminal (user terminal) connected to a public network by connecting a media terminal (operator terminal) to a call control device (gate keeper device) for controlling connection between a public network connection device and a multimedia terminal. A system for transmitting and receiving information to and from the system has been constructed.

In the above-described system, when a call control device (gate keeper device) for controlling connection between the public network connection device and the multimedia terminal fails, communication between the two cannot be maintained, and a great deal of trouble is given to the user. There are drawbacks to damage.

[0006]

As described above, in the conventional system, when the call control device (gate keeper device) breaks down, the system goes down and communication between the public network connection device and the multimedia terminal cannot be maintained. There was a problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. A plurality of call control devices (gate keeper devices) are provided, one of which is used as an active system, and the other is used as a standby system. An information communication system for switching to a standby call control device (gatekeeper device) while maintaining voice communication between a public network connection device and a multimedia terminal when an active call control device (gatekeeper device) fails; An object of the present invention is to provide a switching connection method for a communication system.

Another object of the present invention is to provide an information information system capable of performing information communication between a public network connection device and a multimedia terminal by using both an active call control device and a standby call control device (gate keeper device). With the goal.

[0009]

In order to achieve the above object, an information communication system according to the present invention comprises a voice or video,
A plurality of information communication terminals having a function of transmitting and receiving audio / video, and one or more having a function of transmitting / receiving audio / video information to / from the information communication terminal, or a function of transmitting / receiving between a public network and a LAN A public network connection device, and a call control device that manages identification information and operation states of the information communication terminal and the public network connection device and performs connection processing of devices connected to the LAN, are arranged on the LAN. Means for installing a plurality of said call control devices on said LAN, operating a first call control device as an active system, and operating a second call control device as a standby system in said information communication system; Means for switching to the second call control device in the standby system when a failure occurs in the first call control device, when manual system switching is performed, or when an automatic system switching activation time comes. It is characterized by the following.

According to the present invention, the call control device for controlling the connection between the public network control device and the information communication terminal is duplicated, and when a failure occurs in the active call control device or when the manual system switching is performed. The call control device can be switched to the standby call control device when the automatic call switching start time comes.

[0011] In order to achieve the above object, the information communication system of the present invention provides a voice, video, or audio / video.
A plurality of information communication terminals having a function of transmitting and receiving video, and one or more public networks having a function of transmitting and receiving audio / video information to and from the information communication terminal, or a function of transmitting and receiving between a public network and a LAN Managing the identification information and the operation state of the connection device, the information communication terminal and the public network connection device, and
In an information communication system in which a call control device for performing connection processing of devices connected to N is arranged on the LAN, a plurality of the call control devices are installed on the LAN, and the plurality of call control devices start up. Means for setting the active system and the standby system at the same time, and the active system call control device performs a switching process, and the standby system call control device includes means for performing communication with the active system call control device. It is characterized.

According to the present invention, the call control devices for controlling the connection between the public network control device and the information communication terminal are duplicated, and when each call control device starts up, the operation system or the standby system is automatically determined. Is set.

[0013] In order to achieve the above object, the information communication system of the present invention provides a voice, video, or audio / video.
A plurality of information communication terminals having a function of transmitting and receiving video, and one or more public networks having a function of transmitting and receiving audio / video information to and from the information communication terminal, or a function of transmitting and receiving between a public network and a LAN Managing the identification information and the operation state of the connection device, the information communication terminal and the public network connection device, and
In an information communication system in which a call control device for performing connection processing of devices connected to N is arranged on the LAN, a plurality of the call control devices are installed on the LAN,
Means for operating the call control device in the active system and the second call control device in the standby system, and a new call requested by the information communication terminal or the public network connection control device is the first call control of the active system. If the call is not accepted by the device, a means for recognizing that a failure has occurred in the first call control device and transmitting a rising broadcast signal, and a second call control of the standby system having received the rising broadcast signal Means for transmitting a rise response signal from the device, the information communication terminal or the public network connection control device that has received the rise response signal recognizes that the second call control device is a new active call control device, Means for transmitting a registration request signal to the second call control device.

According to the present invention, the call control device for controlling the connection between the public network control device and the information communication terminal is duplicated, and the new call requested by the information communication terminal or the public network connection control device is the active call. If the call is not accepted by the control device, it recognizes that a failure has occurred in the active call control device, and transmits a rising broadcast signal to enable connection with the standby call control device.

According to another aspect of the present invention, there is provided a switching connection method for an information communication system, comprising: a plurality of information communication terminals having a function of transmitting / receiving audio, video, or audio / video; One or a plurality of public network connection devices having a function of transmitting / receiving data to / from the information communication terminal, or transmitting / receiving data between a public network and a LAN, identification information of the information communication terminal and the public network connection device, In an information communication system in which a call control device that manages an operation state and performs a connection process of a device connected to the LAN is arranged on the LAN, a plurality of the call control devices are installed on the LAN. The first call control device is set to the active system, the second call control device is set to the standby system, and when a failure occurs in the first call control device, when manual switching is performed, or when the automatic Switching start time is The information terminal device and the public network connection, which switch to the second call control device when it comes, transmit a rising broadcast signal from the second call control device switched to the active system, and receive the rising broadcast signal. Transmitting a registration request signal from the device, transmitting a registration response signal from the second call control device having received the registration request signal, wherein the information terminal device or the public network connection device has a call before switching, A call control communication channel establishment request is made to the second call control device.

According to the present invention, the call control device for controlling the connection between the public network control device and the information communication terminal is duplicated, and a new call requested by the information communication terminal or the public network connection control device is activated. If the call is not accepted by the control device, it is recognized that a failure has occurred in the active call control device, and connection with the standby call control device and establishment of a call control communication path are enabled.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an overall configuration of an information communication system to which the present invention is applied. LA
N10 is a LAN which is the core of this system, and is constituted by, for example, Ethernet having a transmission amount of 100 Mbit.

In this embodiment, the LAN 10 is a call control signal path 10 for transferring a call control signal such as an outgoing request or an incoming request.
a and an audio signal path 10b for transmitting audio or audio / video information. Then, TCP is used as the call control signal path 10a, and UD is used as the voice signal path 10b.
P is used, but both signal paths 10
Both a and 10b can be configured by TCP or UDP. When TCP and UDP are used, an IP address and a port number are used as communication path information as signal path information, and connection control between terminals is performed. TCP, U
When using a protocol or communication means other than DP, it is necessary to use information capable of uniquely identifying a communication path. In addition, IS which is widely used as a call connection procedure is used.
Q.DN conforming to the DN standard. 931 or another signal may be used.

The LAN 10 has a plurality of (three in FIG. 3) hub devices 11, 1 as communication interface devices for connecting terminals constituting the multimedia terminal 100.
2, 13 are connected. Hub devices 11, 12, 13
Is a connection interface function with the LAN 10 and a LAN
It has a protocol conversion function of converting an audio packet transmitted on 10 into audio data and taking it in, and converting input audio data into an audio packet and sending it to the LAN 10. These hub devices 11, 12 and 13 are provided with telephones 11A, 12A and 13
A and a personal computer 1 having a telephone function
1B, 12B, and 13B are connected. These telephones 11A, 12A, 13A and personal computers 11B, 12B, 13B are all used as extension terminals (operator terminals). Note that the telephones 11A, 1
As 2A and 13A, any of an analog telephone and a digital telephone can be used. Each of the telephones 11A, 12A, 13A and the personal computers 11B, 12B, 13B has a telephone number (DN) and L
An IP address for identifying a connection device on the AN is assigned. Further, for example, a personal computer 12B
And 13B form a broadcast group. When a call is made to a telephone number (DN) assigned to the broadcast group, both personal computers 12B and 13B have a function of receiving a call.

A plurality of (two in the figure are illustrated) public network connection devices (computer telephony routers) are provided on the LAN 10 as communication interface devices for external line connection.
Router devices 20 and 21 are connected. The router devices 20 and 21 perform an interface process between the public network 30 and the information communication system. If the connected public network 30 is ISDN, a router device compatible with ISDN is used. A PSTN compliant router is used. The router devices 20 and 21 also have a protocol conversion function of converting voice data transmitted from the public network 30 into voice packets and transmitting them to the LAN 10, capturing voice packets on the LAN 10 and converting them into voice data and transmitting them to the public network 30. Have. In addition, the system may be constructed by one router device. A plurality of user telephones 31 and 32 (two in the figure are illustrated) are connected to the public network 30. The LAN 10 is connected to a communication server 40 that stores various data such as voice data, and has an e-mail storage and distribution function.

In the present invention, the multimedia terminal 1
00 and a plurality of (two in the figure) call control devices (hereinafter, referred to as gatekeeper devices) 50, 51 for managing the identification information and the operation state of the router devices 20, 21 and controlling the call connection of this system. Are connected to the LAN 10. In addition, the voice guidance is transmitted to the LAN 10 by automatically responding to the incoming call, and the PB from the caller is further transmitted.
An automatic voice response device 60 that determines a transfer destination (multimedia terminal) using a signal or the like and transfers the transfer destination to the transfer destination, and a personal computer 70 that can be used as an extension telephone are connected. These devices also have LAN1
0, an IP address for identifying the connection device on 0 is assigned.

Although not shown in FIG. 1, the LAN
10 has PHS as another communication interface device.
(Personal Handy-phone System) A wireless hub device or the like having the function of a base station can also be connected.

FIG. 2 is a block diagram showing the configuration of the gate keeper device described above. The figure shows only the functions required in this embodiment. Gatekeeper device 50, 51
Is provided with a network interface unit 55 connected to the LAN 10 and exchanges information with the LAN 10.

The protocol processing unit 56 includes the hub device 11,
It analyzes call control signals transmitted and received from the routers 12 and 13 and the router devices 20 and 21 via the network interface unit 55, and transmits the result to the CPU 57. Also CPU
A call control signal is generated in accordance with an instruction from 57 and transmitted to the LAN 10 via the network interface unit 55.

The data storage unit 58 stores information necessary for call control (for example, a data table for converting a telephone number (DN) and an IP address), non-response transfer information, voice data storage information, and the like. The information is read and written based on a command from the CPU 57.

The CPU 57 includes gate keeper devices 50, 5
1 to perform various processes such as call connection control, and exchange with the protocol processing unit 56 and the data storage unit 58.

Next, an outline operation of the information communication system according to the present invention will be described. Hereinafter, an extension call between devices in the LAN will be described assuming that the gatekeeper device 50 is an active system.

For example, from the telephone set 11A connected to the hub device 11 of the multimedia terminal 100, the LAN 1
When a call is made to the telephone number (DN) 3001 of the telephone set 12B via “0”, the gate keeper device 50 refers to the data table stored in the data storage unit 58 and
A call is sent to the IP address (133, 114, 131, 101) for the telephone number (DN) 3001 via the AN 10. The hub device 12 recognizes from the IP address that the call is directed to a terminal managed by itself, receives the call information, and rings the telephone 12A having the IP address. Then, the operator operates the telephone 12
By taking the handset of A, a call between extensions (between the telephones 11A and 12A) is realized.

Next, the multimedia terminal 10 on the LAN
A case will be described in which an outside call is made with a user telephone connected to the public network 30.

For example, from the telephone set 11A connected to the hub device 11 to the telephone set 3 connected to the public network 30
When making a call to the first telephone number (DN) 03-5678-1234, the hub device 11 sends a call signal to the LAN 10. Upon receiving this, the gatekeeper device 50 refers to the data table stored in the internal data storage unit 58, recognizes that the call is to be made to the public network 30 based on the number of digits in the telephone number, and transmits the call to a router device (eg, 20)
Select to send outgoing signal. The router device 20 makes a call to the public network 30 and further transmits a call from the public network 30 to the telephone 3.
Called to 1. Thus, external line communication can be performed with the telephone 31 connected to the public network 30 via the router device 20.

Next, a plurality of gate keeper devices are connected on the LAN 10 of the present invention, and
Various embodiments that operate as a standby system will be described. (1) Startup Sequence of Gatekeeper Device FIGS. 3 and 4 are diagrams showing a startup sequence of the extension terminal and the gatekeeper device, respectively. In FIG. 3, a multimedia terminal 100 (hereinafter referred to as an extension), which is an extension terminal, transmits a rising broadcast signal in which an identification name and a transmission source type (client) are set at the time of startup.
To the device connected to. The gate keeper device that has received the rising broadcast signal (for example, suppose that the gate keeper device 50 is an active system) transmits a rising response signal in which an identification name is set to the extension (the multimedia terminal). The extension receiving this transmits a registration request signal in which an identification name and an IP address are set to the gate keeper device 50 that is the transmission source of the rising response signal. The gate keeper device 50 that has received this, when permitting registration of this extension, returns a registration response signal to the extension. In addition,
The same rising sequence can be used when the router devices 20 and 21 rise.

On the other hand, when the active gate keeper device 50 starts up later, the sequence shown in FIG. 4 is executed. First, when the active gatekeeper device 50 starts up, it sends out a start-up broadcast signal in which an identification name and a transmission source type (GK) are set to the LAN 10 at the start-up. The extension (multimedia terminal 100) that has received the rising broadcast signal transmits a registration request signal in which an identification name and an IP address are set to the gatekeeper device 50. When permitting registration of this extension, the gatekeeper device 50 receiving this returns a registration response signal to the extension. Note that the router device 2
The same rising sequence can be applied to 0 and 21.

(2) Sequence for Determining the Operating System and Standby System of the Gatekeeper Device FIGS. 5 to 8 are diagrams showing the sequence of determining the operating system and standby system of the gatekeeper device. For example, if the gate keeper device 51 starts up later while the gate keeper device 50 starts up, the gate keeper device 51 sends out a rising broadcast signal in which an identification name and a transmission source type (client) are set to the LAN 10. Upon receiving this, the gatekeeper device 50 sends out a rising response signal in which the identification name is set. When the gate keeper 51 receives the rising response signal from the gate keeper 50 within the timeout period, the gate keeper 51 recognizes its own system as the standby system.

Also, as shown in FIG.
However, when a rising response signal is not received from the LAN 10, a response signal reception timeout is generated internally, a random time is set, and a rising broadcast signal is retransmitted on the LAN 10 after the random time elapses. If the reception timeout of the rising response signal occurs internally even after the retransmission, the gatekeeper device 51 identifies the own system as the active system.

FIG. 7 shows two gate keeper devices 50, 5
FIG. 6 is a diagram showing a sequence when 1 simultaneously rises. In this case, since each of the gate keeper devices 50 and 51 is waiting for a rising response signal, a response signal to the rising signal from the other party is not transmitted. When a response signal reception time-out occurs, each of the gate keeper devices 50 and 51 sets a random time further, rises after the random time has elapsed, and retransmits the broadcast signal onto the LAN 10. Here, assuming that the random time set by the gate keeper device 51 is shorter than the random time set by the gate keeper device 50, the gate keeper device 51 first rises, retransmits the broadcast signal, and the rising response reception timeout occurs. Becomes the working system. On the other hand, the gatekeeper device 50 that retransmits the rising broadcast signal later becomes a standby system to receive the rising response signal from the gatekeeper device 51.

FIG. 8 is a diagram showing a sequence in the case where the rising broadcast signal retransmitted in FIG. 7 is also transmitted on the LAN 10 at the same time. When the retransmission rising broadcast signal is also transmitted at the same time, for example, the gate keeper devices 50 and 51 compare their own IP address with the IP address of the other party to receive, and for example, the gate keeper device with the lower one digit of the IP address being smaller (for example, The gate keeper device 50) recognizes its own system as an active system (or a standby system), and the gate keeper device (for example, the gate keeper device 51) having the larger last digit of the IP address recognizes its own system as a standby system (or an active system). I do.

As another recognition method, the operating system and the standby system may be set in advance in the gate keeper devices 50 and 51, and the operating system and the standby system may be determined based on the setting information.

The gate keeper device 51 that has identified its own system as the standby system is different from the active gate keeper device 50 in FIG.
The registration request signal in which the identification name and the IP address shown in (1) are set is transmitted. After receiving the registration request signal, the gate keeper device 50 sends a registration response signal to which the identification name is set to the gate keeper device 51 after the registration is set.

(3) Fault Monitoring Sequence of Active Gatekeeper Device by Standby Gatekeeper Device FIG. 10 shows, for example, a fault monitoring sequence when the gatekeeper device 50 operates in the active system and the gatekeeper device 51 operates in the standby system. FIG. The active gatekeeper device 50 notifies the standby gatekeeper device 51 of the call information every time the call connection processing is performed. If the notification of the call information is made at least once within a certain period of time, the standby gatekeeper device 51 becomes the active gatekeeper device 50.
Recognizes that is operating normally.

On the other hand, if the call information is not notified within a predetermined time, the standby gatekeeper device 51 sends a survival confirmation request signal to the active gatekeeper device 50. Is recognized to be operating normally, and if there is no response, it is recognized that a failure has occurred in the active gatekeeper device 50. The survival confirmation request signal may be transmitted using a specific number (for example,% 0001) different from the telephone number of the destination as the destination number.

FIG. 11 is a diagram showing a failure detection sequence of the active gatekeeper by the client. 2
If no failure of the active system is detected between the gatekeeper devices 50 and 51, or if a new transmission request signal transmitted from the extension (multimedia terminal) and / or the router is not processed, the extension and / or the router is not processed. Recognizes that a failure has occurred in the active gatekeeper device 50. Then, the extension and / or the router device broadcasts a request signal (rising broadcast signal) to the LAN 10 in order to discover a new gatekeeper device 51. This request signal may be a signal obtained by adding information indicating that the active gatekeeper device 50 has a fault to the rising broadcast signal. When the standby gatekeeper device 51 receives the request signal, the standby gatekeeper device 51 transmits a rising response signal in which an identification name is set to the LAN 10.
To send. The extension and / or the router device receiving this recognizes the gate keeper device 51 which becomes a new active system, transmits a registration request signal in which an identification name and an IP address are set to the gate keeper device 51, and sets and registers with the gate keeper device 51. Then, a registration response signal is transmitted to the extension and / or the router device.

(4) Switching Sequence from Standby System to Active System FIG. 12 is a diagram showing a switching sequence from the active gatekeeper device to the standby gatekeeper device. When a failure occurs in the active gatekeeper, when manual switching is performed, or when the automatic switching start time arrives (no calls are being processed by the gatekeeper during the switching start time zone). The switching is executed as in (case).

For example, the gate keeper device 51 whose own system has been switched from the standby system to the active system notifies the connected device on the LAN 10 by a rising broadcast signal that the system has been switched to the active system. The notification signal may be a signal obtained by adding information that the system has been switched to the rising broadcast signal. The extension (multimedia terminal 100) notified of the switch to the active system by the broadcast signal and the router devices 20 and 21 recognize the exchange control request destination as the newly active gatekeeper device 51 and identify them. The registration request signal in which the name and the IP address are set is transmitted to the gate keeper device 51.
To send to. When the gatekeeper device 51 completes the setting registration based on the registration request signal, it transmits a registration response signal to its extension and the router devices 20 and 21.

Further, a communication path for call control is established from the extension (multimedia terminal 100) holding the call and the router device (for example, the router device 20) to the new active gatekeeper device 51 before the switching. Send a request to As the establishment of the communication channel for call control, a communication channel for call control may be established from the active gatekeeper device 51 to the extension holding the call and the router device before switching. Thereafter, when disconnecting the call before the system switching, the communication path for call control established here is used.

(5) Registration sequence when a plurality of gate keeper devices are operating FIG. 13 is a diagram showing a registration sequence when a plurality of gate keeper devices are operating in the system. In this embodiment, it is possible to set the identification information of the gate keeper device belonging to each extension and / or the router device. Each extension and / or router device transmits a rising broadcast signal. The gate keeper device (50 or 51) receiving this transmits a rising response signal in which identification information is set. The extension and / or the router device that has received the response signal collates the identification information from the gate keeper device with the identification information previously set in its own device, and sends a registration request signal if they match. When the gate keeper receives the request signal and completes the setting registration, it transmits a registration response signal to the corresponding extension and / or router.

FIG. 14 is a diagram showing another registration sequence when a plurality of gate keeper devices are operating in the system. In this embodiment, each gate keeper device (5
0 or 51), it is possible to set the extension for which registration is permitted and / or the identification information of the router device. Then, each gate keeper device (50 or 51) collates the identification information on the registration request signal sent from the extension and / or the router device with the identification information previously set in its own device. And sends a registration response signal to the corresponding extension and / or router device.

(6) Operation system and standby system determination sequence when two or more gatekeeper devices are installed FIG. 15 shows the operation system and standby system when two or more gatekeeper devices are installed in the system. It is a figure which shows a system determination sequence. Three gatekeeper devices GK1 to GK3
Of these, the other identification information is set in the two gatekeeper devices GK1 and GK2. That is, when the gatekeeper device GK2 transmits a rising broadcast signal in which an identification name and a transmission source type (client) are set to the LAN 10 at the time of startup, the gatekeeper device GK1 receiving the signal.
Compares the transmitted identification information with the identification information set therein, and if they match, identifies the gatekeeper device GK2 as a partner system constituting an active system and a standby system, and outputs a rise response signal to the gatekeeper device. Send to GK2. Upon receiving the response signal, the gatekeeper device GK2 transmits a registration request signal in which the identification name and the IP address are set. Upon receiving this, the gatekeeper GK1 performs setting registration, and transmits a registration response signal to the gatekeeper GK2.

[0048]

As described above, according to the present invention, when a plurality of gate keeper devices (call control devices) for controlling the connection between the public network connection device and the multimedia terminal are installed in the information communication system, the start sequence is simplified. The operating system and standby system can be set. Further, when the active gatekeeper detects a failure, when manual switching is executed, or when the automatic switching start time comes, it is possible to switch to the standby gatekeeper by a simple sequence. Further, there is an effect that the call connection control can be continuously performed even after the switching to the standby gatekeeper device.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of an information communication system according to the present invention.

FIG. 2 is a functional block diagram showing a configuration of a gate keeper used in the information communication system of the present invention.

FIG. 3 is an embodiment showing a startup sequence of an extension terminal.

FIG. 4 is an embodiment showing a startup sequence of the gate keeper device.

FIG. 5 is a first embodiment showing a sequence of determining an active system and a standby system of the gate keeper device.

FIG. 6 is a second embodiment showing a sequence for determining the active system and the standby system of the gate keeper device.

FIG. 7 is a diagram illustrating a third embodiment of the present invention, which illustrates an operation system and standby system determination sequence of the gate keeper device.

FIG. 8 is a fourth embodiment showing a sequence for determining the active system and the standby system of the gate keeper device.

FIG. 9 is a diagram showing a registration request sequence from the standby system to the active system of the gate keeper device.

FIG. 10 is a diagram showing a failure monitoring sequence of the active gatekeeper device by the standby gatekeeper device.

FIG. 11 is a diagram showing a failure detection sequence of an active gatekeeper device by a client.

FIG. 12 is a diagram showing a switching sequence from an active gatekeeper to a standby gatekeeper.

FIG. 13 is a diagram showing a registration sequence when a plurality of gate keeper devices are operating in the system.

FIG. 14 is a diagram showing another registration sequence when a plurality of gate keeper devices are operating in the system.

FIG. 15 is a diagram showing a sequence for determining an active system and a standby system when two or more gate keeper devices are installed in the system.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... LAN, 10a ... Call control signal path, 10b ... Voice signal path 100 ... Multimedia terminal 11, 12, 13 ... Hub apparatus (protocol conversion apparatus) 11A, 12A, 13A ... Telephone 11B, 12B, 13B ... Personal computer 20 , 21 ... Router device (public network connection device) 30 ... Public network 31, 32 ... Telephone (user terminal) 40 ... Communication server 50, 51 ... Gatekeeper device (communication interface device) 60 ... Automatic voice response device 70 ... Personal computer

Continued on front page F-term (reference) 5K014 CA02 FA01 HA10 5K028 AA14 CC05 DD03 EE07 KK32 MM06 MM08 PP22 QQ01 5K030 GA12 HB01 HB02 HB21 HC01 HC14 HD03 HD05 HD06 JT02 LA02 LB02 LD02 MD02 5K033 AA06 BA15 CB04 DA15 EA04 EB06 9A001 CC03 JJ19 LL02

Claims (17)

[Claims] 1. A plurality of information communication terminals having a function of transmitting and receiving audio, video, or audio / video, and transmitting / receiving audio / video information between the information communication terminals, or between a public network and a LAN. One or a plurality of public network connection devices having a function of transmitting and receiving data through the network, and manages identification information and operation states of the information communication terminal and the public network connection device to perform connection processing of devices connected to the LAN. In an information communication system in which a call control device and a call control device are arranged on the LAN, a plurality of the call control devices are installed on the LAN, a first call control device is an active system, and a second call control device is a standby system. And means for switching to the second call control device when a failure occurs in the first call control device, when manual system switching is performed, or when an automatic system switching activation time comes. And having An information communication system characterized by the above-mentioned. 2. A plurality of information communication terminals having a function of transmitting / receiving audio, video, or audio / video, and transmitting / receiving audio / video information between the information communication terminals, or between a public network and a LAN. One or a plurality of public network connection devices having a function of transmitting and receiving data through the network, and manages identification information and operation states of the information communication terminal and the public network connection device to perform connection processing of devices connected to the LAN. In an information communication system in which a call control device and a call control device are arranged on the LAN, a plurality of call control devices are installed on the LAN, and when the plurality of call control devices start up, the call control device is set to an active system and a standby system. The first call control device of the active system performs a switching process, and the second call control device of the standby system includes means for performing communication with the active call control device. Communications system. 3. The means for setting an active system and a standby system,
When the second call control device starts up, it transmits a rising broadcast signal, and when receiving a rising response signal from the first call control device that has received it, the second call control device sets its own system. 3. The system according to claim 2, wherein the system is identified as a standby system.
An information communication system according to claim 1. 4. The means for setting an active system and a standby system,
The first call control device transmits a rising broadcast signal when the first call control device starts up, and when there is no response signal to the rising broadcast signal and the reception of the rising response signal times out, the first call control device sets a random time. 3. The information communication system according to claim 2, wherein the rising broadcast signal is retransmitted after a lapse of the time, and if the rising response signal reception timeout occurs as a result, the own system is identified as an active system. 5. The means for setting the active system and the standby system,
When the first and second call control devices simultaneously start up and transmit a rising broadcast signal on the LAN, and there is no response signal to the rising broadcast signal and the reception of the rising response signal times out, the first and second call control devices The second call control device sets a random time and retransmits the rising broadcast signal after the elapse of the random time. As a result, the call control device which has previously timed out the reception of the rising response signal identifies its own system as the active system. 3. The call control device according to claim 2, wherein the call control device retransmitting the rising broadcast signal later identifies its own system as a standby system based on a rising response signal from the active call control device. Information communication system. 6. The means for setting the active system and the standby system,
The first and second call control devices simultaneously start up, transmit a rising broadcast signal on the LAN, there is no response signal to the rising broadcast signal, a rising response signal reception timeout occurs, and the first and second call control devices If the second call control device sets a random time and retransmits the rising broadcast signal simultaneously after the elapse of the random time, the first and second call control devices compare the other party's own information with the other party's own information. 3. The information communication system according to claim 2, wherein the information is identified as an active system or a standby system based on the result. 7. The information communication system according to claim 6, wherein the unique information is a network address or preset operating / standby information. 8. The standby call control device transmits a registration request signal to the active call control device, and when the active call control device performs registration, sends a registration response signal to the standby control device. 7. The information communication system according to claim 3, wherein the information is transmitted to a call control device. 9. The information communication system according to claim 3, wherein the rising broadcast signal includes an identification name and a transmission source type. 10. When the call control device of the standby system does not receive the call information from the call control device of the active system within a predetermined time, the call control device of the standby system transmits a survival confirmation signal to the call control system of the active system. When the response signal from the active call control device to the survival confirmation signal times out, the system recognizes that a failure has occurred in the active call control device and performs system switching. 3. The information communication system according to claim 2, wherein upon receipt of a response from the control device, the active call control device recognizes that it is normal. 11. The information communication system according to claim 10, wherein the survival confirmation signal is transmitted using a specific number different from a destination telephone number as a destination number. 12. A plurality of information communication terminals having a function of transmitting / receiving audio, video, or audio / video, and transmitting / receiving audio / video information to / from the information communication terminal, or between a public network and a LAN. One or a plurality of public network connection devices having a function of transmitting and receiving data through the network, and manages identification information and operation states of the information communication terminal and the public network connection device to perform connection processing of devices connected to the LAN. In an information communication system in which a call control device and a call control device are arranged on the LAN, a plurality of the call control devices are installed on the LAN, a first call control device is an active system, and a second call control device is a standby system. The first call control device fails if a new call requested by the information communication terminal or the public network connection control device is not accepted by the first call control device of the active system. Recognize that Means for transmitting a rising broadcast signal; means for transmitting a rising response signal from the second call control device of the standby system having received the rising broadcasting signal; and the information communication terminal having received the rising response signal Or the public network connection control device recognizes the second call control device as a new active call control device, and transmits a registration request signal to the second call control device. Information communication system. 13. After the registration process, a communication path for call control is established from the information communication terminal or the public network connection control device that has held a call before switching to the second call control device. Alternatively, a communication path for call control is established from the newly activated second call control device to the information communication terminal or the public network connection control device holding a call before switching. The information communication system according to claim 12, wherein 14. A plurality of information communication terminals having a function of transmitting and receiving audio, video, or audio / video, and transmitting / receiving audio / video information to / from the information communication terminal, or between a public network and a LAN. One or a plurality of public network connection devices having a function of transmitting and receiving data through the network, and manages identification information and operation states of the information communication terminal and the public network connection device to perform connection processing of devices connected to the LAN. An information communication system in which a plurality of call control devices are arranged on the LAN, wherein when the information terminal device and / or the public network connection device start up, a means for transmitting a rising broadcast signal; Means for transmitting a rising response signal including identification information from the plurality of call control devices that have received the notification signal, the information terminal device that has received the rising response signal, and / or The public network connection device compares the identification information of the call control device to which the public network connection device belongs with the identification information in the rising response signal, and transmits a registration request signal to the call control device if the identification information matches. An information communication system, comprising: 15. A plurality of information communication terminals having a function of transmitting / receiving audio, video, or audio / video, and transmitting / receiving audio / video information between the information communication terminals, or between a public network and a LAN. One or a plurality of public network connection devices having a function of transmitting and receiving data through the network, and manages identification information and operation states of the information communication terminal and the public network connection device to perform connection processing of devices connected to the LAN. An information communication system in which a plurality of call control devices are arranged on the LAN, wherein when the information terminal device and / or the public network connection device start up, a means for transmitting a rising broadcast signal; Means for transmitting a rising response signal from the plurality of call control devices that have received the notification signal, and the information terminal device and / or the public network connection that have received the rising response signal. Means for transmitting a registration request signal containing identification information from the device to the plurality of call control devices, and the plurality of call control devices receiving the registration request signal,
The identification information permitting the registration set in advance is compared with the identification information in the registration request signal, and when they match,
Means for transmitting a registration response signal from the call control device to the matching information terminal device and / or the public network connection device, and sending a registration rejection signal when the registration response signal does not match. . 16. A plurality of information communication terminals having a function of transmitting / receiving audio, video, or audio / video, and transmitting / receiving audio / video information between the information communication terminals, or between a public network and a LAN. One or a plurality of public network connection devices having a function of transmitting and receiving data through the network, and manages identification information and operation states of the information communication terminal and the public network connection device to perform connection processing of devices connected to the LAN. An information communication system in which two or more call control devices are arranged on the LAN, wherein when a new call control device starts up, a means for transmitting a rising broadcast signal including identification information; Of the two or more call control devices that have received the broadcast signal, the call control device that matches and matches the preset identification information with the identification information in the rising broadcast signal and starts the call control device. Information communication system characterized by comprising means for transmitting the answer signal, means for transmitting a registration request signal from said new call control apparatus which receives the rising response signal to the call control device. 17. A plurality of information communication terminals having a function of transmitting / receiving audio, video, or audio / video, and transmitting / receiving audio / video information to / from the information communication terminal, or between a public network and a LAN. One or a plurality of public network connection devices having a function of transmitting and receiving data through the network, and manages identification information and operation states of the information communication terminal and the public network connection device to perform connection processing of devices connected to the LAN. In an information communication system in which a call control device and a call control device are arranged on the LAN, a plurality of the call control devices are installed on the LAN, a first call control device is set as an active system, and a second call control device is provided. Set to a standby system, when a failure occurs in the first call control device, or when manual system switching is executed, or when the automatic system switching activation time has arrived, switching to the second call control device, Switch to the working system The rising edge broadcast signal is transmitted from the second call control device, and the information terminal device and / or the public network connection device that has received the rising broadcast signal transmits a registration request signal, and the registration request signal is received. A registration response signal is transmitted from the second call control device, and when the information terminal device and / or the public network connection device have a call before switching, a call control communication channel establishment request is made to the second call control device. A switching connection method for an information communication system, comprising: