JP3570986B2 - Connection control method of voice communication in communication network, communication system therefor, and information recording medium - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention provides data communication through a computer two-way communication network (Intranet, Internet, Extranet, etc., hereinafter, shown only Internet) under a TCP / IP (Transmission Control Protocol / Internet Protocol) environment, for example, a local area network. Connection control method for voice communication in a communication network for performing connection control between telephone terminals accommodated between (LAN) and between telephone terminals accommodated in the LAN and the telephone network, and the communication system and information recording medium About.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in telephone calls between LANs or between LANs and telephone terminals accommodated in a telephone network, voice communication with a high transmission speed (a wide transmission band) is performed even at the peak of data communication. Executing call connection control. In this case, data transmission / reception for call connection control of voice communication may affect data transmission speed.
[0003]
As the influence of the data transmission speed, the call connection control may lower the data transmission speed or interrupt the transfer due to data transfer waiting (buffering). For this reason, voice quality in voice communication tends to deteriorate.
[0004]
As an example of an improvement plan concerning such a countermeasure, there is known an example of "Internet telephone connection method, transmission band management device, and gate key device" in JP-A-2000-224239. In this conventional example, transmission band reservation setting is performed collectively over the entire network, and constant data transfer / telephone call quality is secured through control of a gate keeper device and a gateway device.
[0005]
The gate keeper device performs an operation (connection control) relating to a VoIP (Voice of Internet Protocol) function, and the gateway device controls connection with an existing voice network. The gate keeper device uses an existing VoIP technology, such as H.264, on a network. Voice communication is performed by the H.323 protocol (ITU-T: International Telecommunication Union-Telecommunication Standardization Sector recommendation).
[0006]
[Problems to be solved by the invention]
In the above conventional example, the following inconveniences can be considered.
(1) Since voice communication is not realized on a LAN system, voice communication with a high transmission rate is restricted in a time zone where the data traffic of the LAN system is large (for example, restrictions on call connection in a time zone, telephone equipment). , The connection of the telephone device during the time period, and the call connection of the telephone device cannot be stopped). Therefore, a stable data communication cannot be performed without securing a transmission band used for the data communication.
[0007]
(2) The number of call connections and stoppages in voice communication in the LAN system cannot be regulated. Therefore, the voice transmission band cannot be controlled, and the voice quality of the call voice tends to deteriorate.
[0008]
The present invention is to solve such problems in the conventional technology, and when realizing voice communication on a LAN system, it is possible to restrict a voice having a high transmission speed in a time zone where data communication is large. Accordingly, it is an object of the present invention to provide a connection control method for voice communication in a communication network in which a stable transmission band is ensured and a stable data communication is possible, a communication system therefor, and an information recording medium.
[0009]
Further, the present invention also provides a connection control method for a voice communication in a communication network capable of controlling voice communication in a LAN connection, controlling a transmission band used for the voice communication, and preventing sound quality of the voice communication from deteriorating. Another object is to provide an information recording medium.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, a voice communication connection control method in a communication network according to the present invention includes a LAN system having a telephone device, and executes VoIP connection control and voice communication network connection control. Setting the restriction on the number of call connections of the telephone device in a specific time zone and the suspension of the call connection of the telephone device in a specific time zone as the restriction information of the LAN system each containing the telephone device ; Next, when a call connection request is received, a telephone device connected to each of the plurality of LAN systems is identified; a step of identifying the restriction information; Deciding whether or not the call connection to the telephone device has been performed, and executing the call connection control based on the possibility of the call connection. It is characterized in that.
[0011]
As described above, according to the method of the present invention, as the restriction information, (a) the restriction of the call connection in the time period, (b) the restriction of the number of connections of the telephone device, (c) the suspension of the call connection in the time period, and (d) It is characterized in that regulation information for stopping the call connection of the telephone device is set .
[0012]
According to the method of the present invention, as the VoIP connection control, H.264 of ITU-T recommendation is used. It is characterized by executing voice communication according to H.323 protocol.
[0013]
A voice communication connection control system according to the present invention provides a voice communication in a communication network including a LAN system having a voice input / output device together with a gate keeper device for performing VoIP connection control and a gateway device for performing connection control with a voice network. The gate keeper device controls the number of call connections of the telephone device in a specific time zone with respect to a specific LAN system in a telephone device of a LAN system accommodating a voice input / output device. Setting restriction information for stopping the call connection of the telephone device in a specific time zone , identifying a voice input / output device connected to each of a plurality of LAN systems when receiving a call connection request, To determine whether or not call connection is possible, and call connection control based on this determination. It is characterized in that the configuration for executing the the.
[0014]
The system of the present invention is characterized in that at least one of the plurality of LAN systems having the voice input / output device is a telephone network connected to a gateway device, and a telephone as a voice input / output device is accommodated in the telephone network. And
[0015]
The system according to the present invention is characterized in that the call connection control based on whether the call connection is possible is connection control or control of transmission of a response indicating that connection is not possible.
[0016]
An information recording medium according to the present invention is a telephone system of a LAN system accommodating a voice input / output device, which restricts the number of call connections of a telephone device in a specific time zone for a specific LAN system and a telephone in a specific time zone. A process of setting call connection stop regulation information of a device, a process of identifying a voice input / output device connected to each of a plurality of LAN systems when a call connection request is received, and a call of identifying the regulation information. It is characterized in that a program is stored for determining whether connection is possible or not, and for causing a computer to perform control of processing for executing call connection control based on the possibility.
[0017]
The information recording medium of the present invention is a program for causing a computer to execute connection control as call connection control based on whether or not the call connection is possible, or to execute control of processing for executing control of transmission of a response indicating that connection is not possible. Is stored.
[0018]
The voice communication connection control method, communication system, and information recording medium in the communication network of the present invention execute the restriction information in the telephone device for each LAN system when the voice communication is realized on the LAN system. I have.
[0019]
That is, regulation control for voice communication with a high transmission rate in a time zone where data communication is large (restriction of call connection in a time zone of a telephone device for each LAN system, limitation of the number of connected telephone devices, call connection in a time zone) Stop, control based on the restriction information of the call connection stop of the telephone device). Therefore, the transmission band used for data communication is secured, and stable data communication is performed.
[0020]
Further, according to the present invention, the above-described regulation control on the voice communication in the LAN connection is performed, and the transmission band control used for the voice communication is performed. Therefore, it is possible to prevent the sound quality of the voice communication from deteriorating.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of a connection control method of voice communication in a communication network, a communication system thereof, and an information recording medium according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a block diagram showing a configuration according to the embodiment of the present invention.
The embodiment of FIG. 1 has three LAN systems 1, 2, 3 as an outline of the communication network. A voice communication network based on the H.323 protocol (ITU-T recommendation) has been constructed. Further, an existing (for example, PSTN, ISDN) telephone network 16 is connected to the LAN system 1.
[0022]
The plurality of LAN systems 1, 2, and 3 are connected to a communication network 17 through routers 4, 5, and 6, which are network connection devices. The LAN system 1 is connected to an existing telephone network 16, and a large number of telephones 15 are accommodated in the telephone network 16.
[0023]
In the LAN system 1, the voice input is performed together with a gate keeper device 7 which is a device for executing an operation (connection control) related to a VoIP (Voice of Internet Protocol) function, and a VoIP gateway device 8 which controls connection with an existing voice network. LAN telephone devices 9 and 10 as output means are connected to a LAN communication path.
In the LAN system 2, the LAN telephone devices 11 and 12 are connected to a LAN communication channel, and in the LAN system 3, the LAN telephone devices 13 and 14 are connected to the LAN communication channel.
[0024]
The gate keeper device 7 shown in FIG. In the H.323 protocol (ITU-T recommendation), a plurality of VoIP gateway devices 8 are managed and their control is executed. In other words, while managing a plurality of VoIP gateway devices 8 in the supervised zone, in response to a call connection setting request from an IP (Internet Protocol) terminal or the VoIP gateway device 8, the connection destination VoIP gateway device 8 Controls such as selection, caller authentication and admission control, and allocation of a call transmission band are performed.
[0025]
The VoIP gateway device 8 shown in FIG. In the H.323 protocol (ITU-T recommendation), a call control protocol between the telephone network and the Internet interworking function and control for converting voice data are executed.
[0026]
In each of the gate keeper device 7 and the VoIP gateway device 8, a CPU (not shown) executes the above-described control. The control by the gate keeper device 7 and the VoIP gateway device 8 executes a ROM storing a program for executing the above-described connection control and a working process using a RAM or the like. In addition, the gate keeper device 7 and the VoIP gateway device 8 also include a digital termination processing device that terminates the connection of the line.
[0027]
In the gatekeeper device 7 having such a configuration, the number of connected calls of the LAN systems 1 to 3 that accommodate the LAN telephone devices 9 to 14, respectively, is set in advance. This setting is performed from a data processing terminal by executing a communication protocol or a protocol from a remote location, for example.
[0028]
In addition, the gate keeper device 7 executes control of “restriction on voice communication with a high transmission rate in a time zone where data communication is large”. The program is downloaded and installed in the gate keeper device 7 that executes this control, for example, by using a flash memory as a package software having distribution and an external storage medium.
[0029]
The above-mentioned “restrictions on voice communication with a high transmission rate in a time zone where data communication is large” are as follows from (a) to (d).
(A) Restriction of call connection in time period (b) Restriction of connection number of telephone device (c) Termination of call connection in time period (d) Termination of call connection of telephone device
FIG. 1 shows only the configuration related to voice communication. For example, a LAN server for executing a remote procedure call (RPC) in a LAN and a data terminal (for example, a small general-purpose computer) are not shown.
[0031]
Next, the operation according to the configuration of this embodiment will be described.
An outline of the operation of this embodiment will be described.
Here, three LAN systems 1 to 3 are provided, and the existing VoIP technology, for example, H.264. Voice communication is performed according to the H.323 protocol (ITU-T recommendation).
[0032]
(1) In the gatekeeper device 7, the number of connected calls for each of the LAN systems 1 to 3 that accommodates the LAN telephone devices 9 to 14 is set in advance.
(2) In the gatekeeper device 7, the number of connected calls and the time zone are set in advance in association with each other.
(3) Upon receiving the call connection request, the gate keeper device 7 identifies the LAN telephone devices 9 to 14 connected to the LAN systems 1 to 3.
[0033]
(4) Thereafter, the gatekeeper device 7 identifies the number of connected calls for each of the LAN systems 1 to 3 that accommodates the LAN telephone devices 9 to 14, respectively.
(5) Further, the gate keeper device 7 identifies the number of connected calls for each of the LAN systems 1 to 3 accommodating the LAN telephone devices 9 to 14, and identifies this time zone.
(6) The gate keeper device 7 executes the control of “restriction on voice communication having a high transmission rate in a time period during which data communication frequently occurs” identified above.
[0034]
Next, this operation will be described in detail.
In the network configuration including the gate keeper device 7 and the VoIP gateway device 8 shown in FIG. 1, the LAN telephone devices 9 to 14 in the LAN systems 1 to 3 are connected by the control via the gate keeper device 7, and the voice communication is performed. Do.
[0035]
In the configuration shown in FIG. 1, the telephone set 15 connected to the telephone network 16 and one of the LAN telephone sets 9 to 14 of the LAN systems 1 to 3 are connected by the control through the VoIP gateway apparatus 8, and the Perform voice communication.
[0036]
(1) First Embodiment FIG. 2 is a diagram for explaining the operation of the first embodiment, and FIG. 3 is a diagram for explaining data for identifying a LAN system. FIG. 4 is a flowchart showing a control procedure executed by the gatekeeper device 7. FIG. 5 is a diagram showing regulation information on the LAN system 2 (in this example, the number of connected calls and the regulation of the time zone associated with the number of connected calls). FIG. 7 is a diagram for explaining whether a call connection is possible based on information.
[0037]
In FIG. 2, the LAN telephone devices 9 and 11 connected to the LAN systems 1 and 2 are already connected under control via the gate keeper device 7, and the voice communication is performed. During the execution of the voice communication, the LAN telephone device 12 of the LAN system 2 executes a connection request to start a connection to the LAN telephone device 13 of the LAN system 3.
Note that this connection request basically performs the same operation even if the connection request is made from the LAN telephone device 13 to the LAN telephone device 12.
[0038]
In this case, a connection request command is transmitted from the LAN telephone device 12 of the LAN system 2 to the gate keeper device 7 through the router 5, the communication network 17, and the router 4 of the LAN system 1, and the communication between the LAN telephone device 12 and the LAN telephone device 13 is performed. Starts a telephone communication connection.
Although the calling LAN system 2 is identified here, the called LAN system 3 may be identified, or both the LAN systems 2 and 3 may be identified.
[0039]
At the start of the telephone communication connection, the gate keeper device 7 identifies that the communication partner is the LAN telephone device 13 from the call connection request at the LAN telephone device 12. Then, the LAN system 2 to which the LAN telephone device 12 is connected is identified by the data shown in FIG. In this identification, data associated with the LAN telephone devices 9, 10/11, 12/13, and 14 is used for each of the LAN systems 1 to 3. This data is stored in a memory (not shown) of the gate keeper device 7 or the like.
[0040]
The gate keeper device 7 performs the control procedure of the flowchart shown in FIG. 4 on the basis of the identification (correspondence of the LAN telephone devices 9, 10, 11, 12, 13, and 14 for each of the LAN systems 1 to 3) by the data shown in FIG. Execute
[0041]
Referring to FIG. 4, first, the gate keeper device 7 identifies the LAN system 2 as described above (step S1). Next, the gatekeeper device 7 obtains information on the connection state from the information on the identified LAN system 2, that is, the information shown in FIG. 5 (step S2). For example, the gatekeeper device 7 determines the set time zone and the number of connections from the current time based on the regulation information stored in FIG. 5 regarding the LAN system 2 and determines whether the number of connections can be increased. I do. Step S3).
[0042]
The regulation information in the LAN system 2 shown in FIG. 5 is stored in a memory (not shown) or the like of the gate keeper device 7, and in the LAN system 2 of this example, “00: 00-10: 00, 10: 00-14: 00”. , 14: 00-00: 00 ”, the number of connections of the LAN telephone device is stored in association with each other. For example, in the time zone of "10: 00-14: 00", the number of connections of the LAN telephone device is "1". In other words, the transmission amount (traffic amount) in the data communication is large, and the restriction control of the number of call connections and the stop of the telephone call is executed.
[0043]
Note that the same regulation information as the regulation information in the LAN system 2 shown in FIG. 5 is set in the other LAN systems 1 and 3 and executes the call connection control.
[0044]
If it is determined in step S3 that connection is impossible (S3: No), a response indicating that connection is not possible is made to the LAN telephone device 13 that has made the connection request through the router 4, the communication network 17, and the router 5 (step S3). S4).
[0045]
If it is determined in step S3 that the connection is possible (S3: Yes), the gate keeper device 7 executes the connection control between the LAN telephone device 13 and the LAN telephone device 12, and executes the connection control between the LAN telephone device 13 and the LAN telephone device. The voice communication with the device 12 can be started (step S5).
[0046]
As described above, in the first embodiment, when voice communication with a high transmission rate is realized on the LAN systems 1, 2, and 3, regulation control in voice communication with a high transmission rate is performed in a time zone where data communication is large. Running. In other words, it becomes possible to execute the control of "regulation for voice communication with a high transmission rate in a time zone where data communication is large". Therefore, a transmission band used for the data communication is secured, and stable data communication can be performed.
[0047]
Further, since the regulation control in the voice communication in the LAN connection is performed, the transmission band used for the voice communication can be controlled. As a result, sound quality can be ensured in voice communication.
[0048]
(2) Second Embodiment FIG. 6 is a diagram for explaining the operation of another embodiment.
In FIG. 6, the LAN telephone devices 9 and 11 connected to the LAN systems 1 and 2, respectively, are already connected under the control of the gate keeper device 7, and the voice communication is performed. Thereafter, the telephone 15 connected to the telephone network 16 is connected to the VoIP gateway device 8, the gatekeeper device 7, and the router 4 of the LAN system 1, and to the LAN telephone device 12 via the communication network 17 and the router 5 of the LAN system 2. A call connection request is made to establish a connection.
[0049]
In this telephone communication connection, as in the first embodiment, the gate keeper device 7 identifies that the call destination is the LAN telephone device 12 from the call connection request of the telephone 15, and the LAN telephone device 12 is connected. The existing LAN system 2 is identified by the data shown in FIG. The gate keeper device 7 executes the control procedure of the flowchart shown in FIG. 4 based on the data shown in FIG.
[0050]
In the processing procedure of this operation, whether or not the LAN system 2 can be connected is determined based on the above-described regulation information shown in FIG. Here, if it is determined that the connection is possible, the gate keeper device 7 executes the connection control between the telephone 15 and the LAN telephone device 12 to start the voice communication, but when the connection of the LAN system 2 is not possible, that is, In the time zone of “10: 00-14: 00” as shown in FIG. 5, the number of connections of the LAN telephone device is “1”, and the LAN telephone device 11 has already Since the telephone communication with the telephone device 9 is being executed, the connection is not executed.
[0051]
As described above, also in the second embodiment, similarly to the first embodiment, it is possible to execute the regulation control on the voice communication having a high transmission rate in the time zone where the data communication is large. Also, since the transmission band used for voice communication can be controlled, sound quality in voice communication can be ensured.
[0052]
In the first and second embodiments described above, the LAN telephone devices 9 to 14 and the telephone 15 for performing voice communication have been described. However, a voice input / output device, such as a facsimile for transmitting voice transmission band data (image data), is used. It can be applied to machines as it is.
[0053]
【The invention's effect】
As is apparent from the above description, according to the connection control method for voice communication in the communication network, the communication system and the information recording medium of the present invention, when voice communication is realized on a LAN system, a telephone for each LAN system is required. regulatory information in the device running control by (limit of call connection time zone, connection limit of the telephone apparatus, control information for call disconnection of the call disconnection, the telephone device in the time zone).
[0054]
As a result, it is possible to execute the regulation control in the voice communication having a high transmission rate in a time zone in which the data communication is large, so that the transmission band used for the data communication is secured and the stable data communication is enabled. .
[0055]
Further, according to the present invention, control based on regulation information in voice communication in a LAN connection is performed, and transmission band control used for voice communication is performed.
[0056]
As a result, there is an effect that the sound quality of voice communication can be prevented from deteriorating.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration according to a first embodiment of the present invention.
FIG. 2 is a diagram for explaining the operation of the first embodiment.
FIG. 3 is a diagram for describing data for identifying an AN network in the first embodiment.
FIG. 4 is a flowchart showing a control procedure executed by the gate keeper device in the first embodiment.
FIG. 5 is a diagram for explaining restriction information of a LAN system in the first embodiment.
FIG. 6 is a diagram for explaining an operation of another embodiment.
[Explanation of symbols]
1-3 LAN system 7 Gatekeeper device 8 VoIP gateway device 9-14 LAN telephone device 15 Telephone 16 Telephone network

Claims (7)

A connection control method for voice communication in a communication network including a LAN system having a telephone device and performing VoIP connection control and connection control of a voice communication network,
Setting the restriction on the number of call connections of the telephone device in a specific time zone and the suspension of the call connection of the telephone device in a specific time zone as the restriction information of the LAN system each containing the telephone device ; ,
Next, identifying a telephone device connected to each of the plurality of LAN systems when receiving the call connection request;
Identifying the regulatory information;
Determining a call connection to the telephone device for which the call connection request has been made based on the restriction information;
Performing call connection control based on the availability of the call connection;
A connection control method for voice communication in a communication network, comprising: As the VoIP connection control,
ITU-T Recommendation H. The connection control method for voice communication in a communication network according to claim 1, wherein voice communication according to a H.323 protocol is executed. Voice communication connection control for performing voice communication connection control in a communication network including a LAN system having a voice input / output device, together with a gate keeper device for performing VoIP connection control and a gateway device for performing connection control with a voice network In the system,
The gate keeper device,
In a telephone system of a LAN system accommodating the voice input / output device, the restriction on the number of call connections of the telephone system in a specific time zone and the restriction on the stop of the call connection of the telephone system in a specific time zone for a specific LAN system Set information and
Upon receiving the call connection request, identifying the voice input / output device connected to each of the plurality of LAN systems,
Identify the restriction information to determine whether or not call connection is possible, and execute a call connection control based on the permission / prohibition,
A voice communication connection control system, characterized in that: At least one of a plurality of LAN systems having the voice input / output device is a telephone network connected to a gateway device;
4. The voice communication connection control system according to claim 3 , wherein a telephone as a voice input / output device is accommodated in the telephone network. Call connection control based on the availability of the call connection,
4. The voice communication connection control system according to claim 3 , wherein the connection control is executed or the connection is not transmitted. Restriction on the number of call connections of a telephone device in a specific time zone for a specific LAN system in a telephone device of a LAN system accommodating a voice input / output device, and regulation information on suspension of call connection of the telephone device in a specific time zone Processing to set
A process for identifying the voice input / output device connected to each of the plurality of LAN systems when receiving the call connection request;
A process of identifying the restriction information and determining whether or not to allow a call connection, and performing a call connection control based on the possibility of the connection,
An information recording medium storing a program for causing a computer to execute the above control. As call connection control based on the availability of the call connection,
7. The information recording medium according to claim 6 , wherein a program for causing a computer to execute a connection control or a control of a process of executing a control of transmission of a connection impossible response is stored.

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