JP2965396B2 - Communication method determination method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an ISDN (Integrated
The present invention relates to a method for determining a communication system supported by a communication partner device in a services digital network communication.

[0002]

2. Description of the Related Art In recent years, with the spread of ISDN networks, ISDN communication processing devices such as terminal adapters, telephones, facsimile machines, and videophones that can be connected to ISDNs equipped with various communication systems have been increasing. I have. The ISDN network has various communication systems different from the conventional voice-based analog network. Therefore, in order to transmit and receive information such as voice, data, images, etc., the user must recognize the communication method supported by the communication partner,
Communication must take place.

[0003] A conventional ISDN communication processing device will be described below. FIG. 11 is a functional block diagram of a conventional ISDN communication processing device. In FIG. 11, reference numeral 1 denotes a network interface control unit for transmitting and receiving information signals to and from the ISDN network;
Is a communication system setting unit for setting a communication system that a user wants to communicate with in advance, 3 is a call control processing unit for managing calls such as incoming and outgoing calls and disconnection, and 4 is a communication system set after connecting a call. A data transfer unit for transferring data, 6 is a user interface control unit for transmitting / receiving information to / from a terminal or a user, and 15 is an ISDN communication process composed of 1, 14, 3, 4, and 6 and connectable to ISDN. Device. Reference numeral 8 denotes a terminal, and 9 denotes an ISDN network.

[0004] The operation of the ISDN communication processing apparatus thus configured will be described below. The user sets the communication method to be communicated in the communication method setting unit 14,
The communication partner is dialed from the ISDN communication processing device 15.
Alternatively, when a dial is inputted from the terminal 8 and a dial is added with a communication scheme identifier, the communication scheme setting unit 14 is dialed.
To store the communication method. The call control processing unit 3 creates a call setting message including the communication method notified from the communication method setting unit 14 and makes a call, and the data transfer unit 4 performs data transfer of the set communication method. Was.

[0005]

However, in the above-mentioned conventional configuration, there is no problem if the user knows whether or not the communication processing apparatus he / she wants to communicate with is supported by the communication processing apparatus. If you do not know the supported communication method, you can contact the other party's communication processing device user directly by telephone or make a call once with the desired communication method, and it is sufficient if you can connect, but if you can not connect, another There has been a problem that a call must be made by a communication method.

For example, G4 facsimile communication is performed after protocol conversion from G3 facsimile to G4 facsimile using an ISDN network, or G3 facsimile is converted to G3 facsimile.
In the case of a data storage type G3 facsimile adapter that communicates with a facsimile,
After the user recognizes whether it is 4 facsimile or G3 facsimile, it is necessary to add an identifier of G4 facsimile or G3 facsimile at the time of calling and dial. Alternatively, in the case of a high-end model such as a G4 facsimile, data is temporarily stored and converted into data for the G4 facsimile, then a call is made by the G4 facsimile, and if the connection is established, the data is directly transferred. It has to be re-converted into data and re-originated using a G3 facsimile, which is troublesome. In addition, since the G3 facsimile function must be provided, both the ROM capacity and the price increase.

[0007] The present invention solves the above-mentioned problem, and a user can use an ISD to set a communication system supported by a partner communication processing apparatus.
It is an object of the present invention to provide a communication system determination method that can be known by inquiring the N network.

[0008]

In order to solve the above-mentioned problems, a communication method judging method according to the present invention provides an ISDN communication processing apparatus with respect to an ISDN network when power is turned on or before communication is started. Sending a disconnection message containing information on the communication systems supported by the ISDN network;
The SDN exchange registers and manages the notified communication method for each subscriber, the user communication processing unit makes a call without specifying the communication method in the ISDN network, and the ISDN exchange receives this call. Then, the information of the communication system supported by the partner communication processing device is inserted into the call disconnection message to disconnect the call, and the user communication processing device receives the call disconnection message and analyzes it to support the partner communication processing device. The communication system is determined.

[0009]

With the above configuration, the ISDN network notifies the ISDN network of the communication system supported by the ISDN network, and the information is registered and managed by the ISDN exchange of the ISDN network. It can be known by inquiring the ISDN network about the communication method supported by ISDN. Therefore, the user can select an appropriate communication method from among them and perform communication.

Further, the user sets an efficient communication system in advance among several types of communication systems supported by the partner communication processing device or judges the communication processing device itself, so that, for example, the priority can be set. Communication methods such as setting can be selected, and efficient communication can be performed.

[0011]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an example of I
FIG. 4 is a schematic sequence diagram illustrating an example of control of an SDN communication processing device and an ISDN exchange. In FIG. 1, the ISDN communication processing apparatus is turned on at power-on or before disclosing communication.
A disconnection message including a communication method supported by the own communication processing device is transmitted to the DN network. ISDN IS
The DN exchange registers and manages the notified communication system for each subscriber. The ISDN communication processing device issues a call setup message without setting a communication method in the ISDN to obtain a communication method supported by the communication partner. ISDN
The exchange inserts the communication system supported by the communication partner into the call disconnection message and disconnects the call. The ISDN communication processing device determines the communication method of the communication partner by analyzing the reception of the call disconnection message by analyzing the message.

FIG. 2 shows an ISDN according to an embodiment of the present invention.
FIG. 1 shows a functional block diagram of a communication processing device, wherein 1 is a network interface control unit, 3 is a call control processing unit, 4 is a data transfer unit,
Reference numeral 6 denotes a user interface control unit, which is the same as the conventional configuration. Reference numeral 2 denotes a communication system control unit for storing a communication system specified by the user and its priority, and analyzing a communication system supported by the partner communication processing device.
Is a display unit for displaying a communication system supported by the partner communication processing device determined by analysis, and 7 is a display unit for these 1, 2, 3,
This is an ISDN communication processing device composed of 4, 5, and 6. Reference numeral 8 denotes a terminal, and 9 denotes an ISDN network, which is the same as the conventional configuration.

FIG. 3 shows an ISDN according to an embodiment of the present invention.
FIG. 3 is a functional block diagram of the exchange, wherein 10 is an ISDN terminal interface control unit for transmitting and receiving information signals to and from the ISDN communication processing device, and 11 is a communication system for registering and managing information on communication systems supported by the subscriber's ISDN communication processing device. A management unit, 12 is a call control processing unit that manages calls, and 13 is a
It is an ISDN exchange consisting of 1,12.

FIG. 4 shows a coding example of a high-layer compatibility information element inserted into a call setup message in one embodiment of the present invention. In order to inquire the ISDN network about a communication system supported by the partner communication processing device, FIG. Instead of setting the communication method to the higher layer characteristic identification (bit 7 to bit 1 of octet 4) of the layer compatibility information element, “0000”
000 (binary number) ".

FIG. 5 shows an example of coding of a reason indicating information element to be inserted into a disconnection message in one embodiment of the present invention. The reason indicating information (bit 7 to bit 1 of octet 4) of the cause indicating information element is set to "normal disconnection 0010000". (Binary) "
And diagnostic information (bit 8 to bit 1 of octet 5)
The communication method supported by the own communication processing device is set in bit units (* 1 to * 8 indicate an example of the communication method). If the communication method is supported, 1 is set. It was made.

FIG. 6 shows an ISDN according to an embodiment of the present invention.
4 shows an example of a communication system management table of the exchange, and is a table for registering and managing a communication system supported by a subscriber communication device for each subscriber number. * 1 to * 8 indicate the communication method, and if the subscriber communication device supports the communication method, 1 is written, and if not, 0 is written. FIG.
FIG. 8 is a flowchart of a calling process of the ISDN communication processing device according to an embodiment of the present invention, and FIG. 8 is a flowchart of a communication system management of the ISDN exchange.

Hereinafter, an embodiment of the present invention will be described with reference to the above-mentioned drawings. When the power is turned on or before starting communication, the ISDN communication processing device 7 transmits information on the communication system supported by the own communication processing device 7 to the communication system control unit 2.
To the call control processing unit 3, the call control processing unit 3 creates a disconnection message including a reason display information element indicating the communication system supported by the own communication processing device in FIG. To the ISDN network 9 to notify the ISDN exchange 13. The ISDN exchange 13 that has received the disconnection message related to the non-existent call receives this disconnection message to notify the communication system supported by the subscriber communication processing device, and the communication system management unit 11 shown in FIG. Registered and stored in such a communication system management table.

When a call is made to the ISDN network, as shown in FIG. 7, if the communication method supported by the partner communication processing device is known, the call is specified by specifying the communication method as it is, but the call is unknown. In the case of, in order to inquire the ISDN network 9 about the communication system supported by the partner communication processing device, the higher layer compatibility information element shown in FIG. 4 is inserted into the call setup message, and the call is issued without specifying the communication system. Make a call and wait for a call disconnect message. ISD that receives a call for which communication method has not been set
As shown in FIG. 8, the N exchange 13 searches the communication system management table of FIG. 6 in the communication system management unit 11 and notifies the call control processing unit 12 of the communication system supported by the queried communication processing device. Notify and create a call disconnection message including a cause information element indicating the communication method as shown in FIG.
N to the communication processing device 7. The ISDN communication processing device 7 that has received the call disconnection message analyzes the call disconnection message by the communication system control unit 2 and displays it on the display unit 6 as shown in FIG. If the user sets the priority of the communication method or if the communication processing device itself can determine an efficient communication method, the communication method is selected by the communication method control unit 2 and notified to the call control processing unit 3 to perform communication. A call setup message specifying the system is created and a call is made.

FIG. 9 shows G3 in the second embodiment of the present invention.
FIG. 2 is an overall configuration diagram when a facsimile adapter is used. In FIG. 9, G3 facsimile (A, C) is G3
Through a facsimile adapter, G3 facsimile (B) is connected via a terminal adapter that connects a non-ISDN terminal to an ISDN network, G4 facsimile (D) is directly connected to an ISDN network, and G3 facsimile (E) is directly connected Connected to the analog network. In such a configuration, G4 facsimile communication is performed when communication is performed between A and C, A and D, and G3 facsimile communication is performed when communication is performed between A and B and A and E.

FIG. 10 is a schematic sequence diagram showing a control example of a G3 facsimile adapter as a second embodiment of the present invention based on the entire configuration diagram of FIG. less than,
A second embodiment of the present invention will be described with reference to the above-mentioned drawings with respect to a calling process when a G3 facsimile adapter is used. When a dial is input from the user to the G3 facsimile adapter, a call setup message that does not specify a communication mode is sent out to inquire about a communication mode supported by the partner communication processing apparatus.
A call disconnection message in which a communication system supported by the partner communication processing device is set is received from the SDN network. Next, based on the communication method set in the call disconnection message, it is analyzed whether the partner communication processing device supports G4 facsimile, and the G3 or G4
Is performed in advance. Thereafter, the determined communication method is inserted into the call setting message, a calling process is performed, the call is connected, and the G that has been previously subjected to the data process is processed.
3 or G4 data is transferred.

[0021]

As described above, according to the present invention, ISDN
The communication system supported by the communication processing device is notified to the ISDN network, and the information is registered and managed by the ISDN network. Therefore, before starting communication, the communication processing device desired by the user is supported by the partner communication processing device. It is possible to know the communication system supported by the other communication processing device without directly inquiring of the communication partner whether or not the communication method is supported. Therefore, communication can be performed without imposing a burden on the user.

Further, the user can set an efficient communication method in advance among the communication methods supported by the partner communication processing device, or the communication processing device itself can determine the communication method. By simply dialing consciously, an efficient communication method can be automatically selected and efficient communication can be performed.

[Brief description of the drawings]

FIG. 1 is a schematic sequence diagram showing a control example of an ISDN communication processing device and an ISDN exchange in one embodiment of the present invention.

FIG. 2 is a functional block diagram of an ISDN communication processing device according to an embodiment of the present invention.

FIG. 3 is a functional block diagram of an ISDN exchange according to an embodiment of the present invention.

FIG. 4 is a diagram illustrating a coding example of a higher layer compatibility information element in a call setup message according to an embodiment of the present invention.

FIG. 5 is a diagram illustrating an example of coding of a reason indicating information element in a disconnection message according to an embodiment of the present invention.

FIG. 6 is a diagram illustrating an example of a communication method management table of an ISDN exchange according to an embodiment of the present invention.

FIG. 7 is a flowchart of a calling process of the ISDN communication processing device according to an embodiment of the present invention.

FIG. 8 is a flowchart of communication system management of the ISDN exchange according to an embodiment of the present invention.

FIG. 9 is an overall configuration diagram when a G3 facsimile adapter according to a second embodiment of the present invention is used.

FIG. 10 is a schematic sequence diagram illustrating a control example of a G3 facsimile adapter according to a second embodiment of the present invention.

FIG. 11 is a functional block diagram of a conventional ISDN communication processing device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 network interface control unit 2 communication method control unit 3 call control processing unit in ISDN communication processing device 4 data transfer unit 5 display unit 6 user interface control unit 7 ISDN communication processing device in embodiment 8 terminal 9 ISDN network 10 ISDN terminal interface control Part 11 Communication method management part 12 Call control processing part in ISDN exchange 13 ISDN exchange

Claims (1)

(57) [Claims] 1. An ISDN communication processing device notifies a communication system supported by its own communication processing device to an ISDN network,
The ISDN exchange of the ISDN network registers and manages the communication method for each subscriber, the ISDN communication processing device makes a call without specifying the communication method to the ISDN network, and the communication method supported by the other communication processing device is the ISDN exchange. A communication disconnection message including a call disconnection message, and analyzing the call disconnection message received by the ISDN communication processing device to determine a communication method of a communication partner.