JPH10247987A - Isdn remote network - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the communication cost including charging and a communication time in the case of sending information to all nodes and terminals. SOLUTION: A node 2 connecting to a channel 1a of an ISDN 1 informs periodically routing information or the like as network information of a node 3 and terminals 4, 5. In this case, since the node 3 and the terminals 4, 5 are connected to the same channel 1b of the ISDN 1, one information notice is made by one dialing. The caller node 2 sends a call message resulting from setting the network information to user.user information to the node 3. The node 3 receiving the call stores the network information extracted from the user.user information in the call message and sends a restoration end message to the node 2. The node 3 and the terminals 4, 5 similarly transmit information by one return message transmission reception.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to an ISDN remote network connected to an SDN line at a multipoint and transmitting information.

[0002]

2. Description of the Related Art Conventionally, in this type of ISDN network, when network information managed by a certain node is notified to another node or terminal, a call is set for each remote node or terminal of the other party and information is transmitted. ing. In such an ISDN network, broadcast transmission to nodes and terminals is performed, for example, a conventional example described in JP-A-8-37558 is known.

FIG. 6 is a sequence diagram of information transmission / reception in the above-mentioned conventional ISDN remote network. In the information communication example of FIG. 6, first, a call is made from the node A to the node B, and after the call is established, the processing of connection completion, data transmission, disconnection, restoration request and restoration completion between the nodes A and B and Notify. Then, a call is made from the node A to the node C, and the call, the connection completion, the data transmission, the disconnection, the restoration request and the restoration completion are processed in the same manner as the sequence in the case of the nodes A and B, and the notification is sent. Is going.

In such a conventional ISDN remote network, a call is established between nodes or between nodes and terminals, and network information is transmitted one-to-one through this data path.

[0005]

However, in the above conventional example, since a call is established between nodes or between nodes and terminals to exchange information, information is transmitted from one node to a plurality of nodes or terminals. In doing so, it is necessary to establish calls corresponding to the number of transmission destinations, and billing is performed for each call.

[0006] Further, when communication is already being performed between the destination node and the terminal, it is necessary to try calling again.
As the number of terminals increases, the connection time increases. In other words, there is a disadvantage in that the communication time and the communication cost including billing when transmitting information to all nodes and terminals increase as the network scale increases.

[0007] The present invention is to solve such a problem in the prior art, wherein network information transmission is performed using user / user information in a call message,
The receiving side can extract and store network information from the user / user information in one incoming message that is a broadcast notification. Communication including communication time and billing when transmitting information to all nodes and terminals An object of the present invention is to provide an ISDN remote network capable of reducing costs.

[0008]

According to a first aspect of the present invention, a node and a terminal serving as a calling side and a receiving side are connected to an ISDN line at a multipoint to transmit information. An ISDN remote network in which a calling node and a terminal
The configuration is such that network information is placed on user information and a call is made.

According to a second aspect of the present invention, there is provided an ISDN remote network in which a calling side, a receiving side node and a terminal are connected to an ISDN line at a multipoint to transmit information, and the receiving side node and the terminal are broadcast. It is configured to extract and store network information from the calling node and terminal from the user / user information in one incoming message as a notification.

According to a third aspect of the present invention, there is provided an ISDN remote network in which a calling side, a receiving side node, and a terminal are connected to an ISDN line at a multipoint to transmit information, and a calling message is transmitted to the node and the terminal. Call processing means for placing a call with the network information placed on the user / user information, and extracting and storing the network information from the calling node / terminal from the user / user information in one incoming message which is a broadcast notification And a reception processing unit that performs the processing.

According to a fourth aspect of the present invention, there is provided an ISDN remote network, wherein the call processing means and the reception processing means are connected to an ISDN to perform an interface process for transmitting and receiving information, and
A call control information transmitting / receiving unit for transmitting / receiving communication control information through the SDN interface unit, a network information collecting unit for sending a transmission request notification for network information and collecting network information, and a network information collecting unit A network information storage unit for storing a user / user information element extracted at the time of an incoming call and an incoming information notification generated from the network information.

According to a fifth aspect of the present invention, in the ISDN remote network, the ISDN interface unit is an ISDN remote network.
Interface processing for transmitting and receiving B channel and D channel information.

In the ISDN remote network having such a configuration, a calling node or terminal carries out a call with the network information included in the user information of the call message. The receiving side extracts and stores the network information from the calling node and the terminal from the user / user information in one incoming message which is a broadcast notification.

As a result, information can be transmitted without performing a series of processing procedures such as calling, connection, data transmission, and disconnection as in the conventional example. In addition, information can be transmitted together with nodes and terminals on the same line. Information can be continuously transmitted to nodes and terminals not on the line. Therefore, communication costs including communication time and billing when transmitting information to all nodes and terminals are reduced.

[0015]

Next, an embodiment of an ISDN remote network according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing the overall configuration of an ISDN remote network according to an embodiment of the present invention. In the ISDN remote network, a node 2 is connected to a line 1a in the ISDN network 1, and a local area network (LAN) is connected to the node 2. Further, nodes 3, terminals 4, 5,... Are connected to the line 1b of the ISDN 1 by multipoint (multidrop method).

FIG. 2 is a block diagram showing a detailed configuration of the nodes 2 and 3 and the terminals 4 and 5 shown in FIG. The nodes 2 and 3 and the terminals 4 and 5 perform the ISDN B channel (ch) and D channel data transmission / reception interface processing on the ISDN 1 lines 1a and 1b in FIG.
A DN interface (I / F) unit 11 is connected.

The ISDN I / F section 11 is connected to a call control information transmitting / receiving section 12 for transmitting / receiving communication control information such as transmission / reception to / from the lines 1a and 1b of the ISDN 1 and communication attributes. Further, the call control information transmitting / receiving unit 12 is connected to a network information collecting unit 13 that sends a network information transmission request notification and collects network information under the control of the control unit 15 described later.

Further, the network information collecting unit 13
It is connected to a network information storage unit 14 that stores a user / user information element extracted at the time of an incoming call to its own device under the control of the control unit 15 and an incoming call notification generated from the network information. These ISDN I / F units 1
1, a control unit 15 that controls these units to control transmission and reception of information is connected to the call control information transmission / reception unit 12, the network information collection unit 13, and the network information storage unit 14.

Next, the operation of this embodiment will be described. First, the operation of the entire ISDN remote network shown in FIG. 1 will be described. FIG. 3 is a sequence diagram showing processing in the ISDN remote network shown in FIG. FIG.
3, the node 2 connected to the line 1 a of the ISDN 1 notifies the node 3 and the terminals 4 and 5 of routing information and the like as network information at regular intervals. In this case, since the node 3 and the terminals 4 and 5 are connected to the same line 1b of the ISDN 1, one information notification is performed by one call.

The calling node 2 sends a calling message in which the network information is set to the user information to the node 3. The node 3 that has received the call stores the network information extracted from the user information in the call message, and then transmits a recovery completion message to the node 2.

Next, upon receiving the recovery completion message from the node 3, the calling node 2 sends the calling message in which the network information is set to the user / user information to the terminal 4.
, And the terminal 4 stores the network information in the same manner as in the case of the node 3, and thereafter transmits a recovery completion message to the node 2. Further, the calling-side node 2 transmits a calling message in which the network information is set to the user information to the terminal 5, stores the network information in the same manner as in the case of the node 3 and the terminal 4, and thereafter recovers. Send a completion message to node 2. In this way,
Information transmission is performed by one round trip message transmission and reception for each node and each terminal.

Next, the operation of the nodes 2 and 3 and the terminals 4 and 5 shown in FIG. 2 will be described. FIG. 4 shows nodes 2 and 3
7 is a flowchart of a transmission operation in the terminal and terminals 4 and 5;
In the transmission operation shown in FIG. 4, the transmission request notification of the network information collected by the network information collection unit 13 under the control of the control unit 15 is transmitted to the call control information transmission / reception unit 12 (step S11). The call control information transmitting / receiving unit 12 extracts the destination address and network information from the transmission request notification under the control of the control unit 15 (step S12).

Next, the call control information transmitting / receiving section 12 creates a user / user information element from the network information under the control of the control section 15 (step S13). Further, the call control information transmitting / receiving unit 12 generates a call message from the user / user information element and the destination address under the control of the control unit 15 (step S14), and the ISD
It is sent to the NI / F unit 11 and transmitted from the ISDN I / F unit 11 to the ISDN 1 (step S15).

FIG. 5 is a flowchart of the receiving operation in the nodes 2 and 3 and the terminals 4 and 5. In the receiving operation shown in FIG.
It is received by the NI / F unit 11 and input to the call control information transmitting / receiving unit 12 (step S20). Call control information transmitting / receiving section 12
When determining that there is an incoming call to its own device under the control of the control unit 15 (step S21: Yes), the user information element is extracted (step S22), and the network information is extracted (step S2).
3) A notification of incoming call information is generated and stored in the network information storage unit 14 through the network information collection unit 13.

As described above, in this embodiment, the calling node 2 transmits a calling message in which the network information is set to the user / user information to the node 3, and this node 3 -Store the network information extracted from the user information, and send a recovery completion message to the node 2. The node 3 and the terminals 4 and 5 also perform information transmission by one round trip message transmission and reception. Therefore, call, connection,
Information can be transmitted without performing a series of data transmission and disconnection processing procedures, and information can be transmitted continuously to nodes and terminals on the same line as well as to nodes and terminals not on the same line. become.

[0026]

As is apparent from the above description, according to the ISDN remote network of the present invention, the calling node or terminal places the network information on the user information of the calling message and makes a call. The receiving side extracts and stores the network information from the calling side node and the terminal from the user / user information in one incoming message which is a broadcast notification.

As a result, information can be transmitted without performing a series of processing procedures such as calling, connection, data transmission, and disconnection. In addition to nodes and terminals on the same line, nodes that are not on the same line, The information can be continuously transmitted to the terminal. Therefore, it is possible to reduce communication time including communication time and billing when transmitting information to all nodes and terminals.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the overall configuration of an ISDN remote network according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a detailed configuration of a node and a terminal illustrated in FIG. 1;

FIG. 3 is a sequence diagram showing processing of the ISDN remote network shown in FIG. 1;

FIG. 4 is a flowchart of a transmission operation in a node and a terminal in the embodiment.

FIG. 5 is a flowchart of a receiving operation in a node and a terminal in the embodiment.

FIG. 6 is a sequence diagram of information transmission and reception in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ISDN network 1a, 1b circuit 2, 3 node 4, 5 terminal 11 ISDN I / F part 12 call control information transmission / reception part 13 network information collection part 14 network information storage part 15 control part

Claims (5)

[Claims] 1. An ISDN remote network in which nodes and terminals on the calling side or the receiving side are connected to an ISDN line at a multipoint and transmit information, wherein the nodes and terminals on the calling side are users and users of a calling message.
An ISDN remote network wherein a call is placed with network information added to user information. 2. An ISDN remote network in which nodes and terminals on the calling side or the receiving side are connected to an ISDN line at a multipoint and transmit information, wherein the node and the terminal on the receiving side are broadcast notifications. An ISDN remote network which extracts and stores network information from a calling node and a terminal from user / user information in an incoming message. 3. An ISDN remote network in which a calling side or a receiving side node and a terminal are connected to an ISDN line at a multipoint and transmit information, wherein the node and the terminal are provided with user / user information of a calling message. Call processing means for placing a call with network information; reception processing means for extracting and storing network information from a calling node or terminal from user / user information in one incoming message which is a broadcast notification; An ISDN remote network, comprising: 4. An ISDN interface unit which is connected to ISDN and performs an interface process for transmitting and receiving information, as said call processing unit and reception processing unit, and call control information for transmitting and receiving communication control information through said ISDN interface unit. A transmitting / receiving unit, a network information collecting unit that sends a transmission request notification for network information, and collects network information, a user / user information element and a network that the network information collecting unit extracts when receiving an incoming call to its own device. The ISDN remote network according to claim 2, further comprising: a network information storage unit that stores an incoming call notification generated from the information. 5. The ISDN interface unit according to claim 1, wherein:
An ISDN remote network for performing an interface process for transmitting and receiving information of a B channel and a D channel of a DN.