JP2974787B2 - Network configuration method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ISDN network, and more particularly to a network of a plurality of time division multiplexers.
The present invention relates to a method for forming a web.

[0001]

2. Description of the Related Art A conventional time division multiplexing device is disclosed in
As described in Japanese Patent No. 76938, priorities for transmission request acceptance are set in advance, and when the total data traffic exceeds a predetermined amount, a low priority transmission request is rejected. Further, the communication channel capacity is set stochastically by a statistical method.

The above prior art has a problem that communication control becomes complicated and it is difficult to economically configure the apparatus. In addition, necessary Oh to pay a communication line use fee of leased line even if you are not using the line
Was uneconomical. SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problem by configuring a required network only in a required time zone using an ISDN public network.

[0002]

SUMMARY OF THE INVENTION In a multiplex transmission network composed of a plurality of time division multiplexers, call control means for calling, receiving, disconnecting, releasing, etc., for each ISDM network to each time division multiplexer. And means for transmitting and receiving network configuration data, and means for analyzing the network configuration data, wherein said means is connected to a central network management device for managing network configuration data. The network configuration data is sent by a communication path formed between the time division multiplexing apparatus and the time-division multiplexing apparatus which is started by a timer or manually called from the time division multiplexing apparatus. Based on the data, a call is made to and received from the time-division multiplexing device facing the lower-order multiplexing device via the ISDN network, and the incoming call process is performed to sequentially form a communication path to form the network configuration data. -Send the data A network is constructed, multiplexed communication of user data is performed after control signal communication is established between all of the time division multiplexers, and the ISDN network is used when the network becomes unnecessary. To open.

Further, the network configuration data is radially transmitted from the central network management device to each of the time division multiplexers via the ISDN network, and the data between the time division multiplexers is transmitted. A network is constructed by making and receiving calls through the ISDN network. Further, a failure or a communication failure of the time-division multiplexing device is detected, and the above-described network formation with the failed time-division multiplexing device removed is performed again. Further, a failure of the central network management device or the time division multiplexing device connected thereto is detected, and the failure is detected by the central network management device or the time division multiplexing device below the time division multiplexing device connected thereto. The above network formation is re-executed based on the network configuration data managed by the connected spare central network management device.

[Action]

A timer is started from the time division multiplexing device connected to the central network management device, or manually arranged between the time division multiplexing device and the time division multiplexing device facing the lower level or radially from the central network management device. A communication path is formed between the time-division multiplexing apparatuses, and network configuration data is sent. On the basis of this, a communication path via the ISDN network is sequentially formed between the time-division multiplexing apparatuses which are further opposed at a lower level. Then, the network configuration data is transmitted to construct a network.
After the control signal communication between all the time division multiplexers is established in this way, multiplex communication of user data is performed, and the ISDN network is released when the network is unnecessary. further,
The faulty time-division multiplexing device is removed and the above-mentioned network formation is re-executed. If a fault occurs in the central network management device, a backup device connected to a lower-order time-division multiplexing device is provided. The above network formation is performed again based on the network configuration data managed by the central network management device.

[0005]

[Example 1]

FIG. 1 is a diagram showing an example of a network configuration according to the present invention. In the time division multiplexing apparatus 1 to which the central management unit is connected, lower-order time division multiplexing apparatuses 2 and 3 are arranged via the ISDN network 8, and further below the time division multiplexing apparatus 4 via the ISDN network 8. To 5th grade are arranged. Hereinafter, each time division multiplexer is abbreviated as TDM.

FIGS. 2 and 3 are flowcharts showing the procedure for constructing the network shown in FIG. In step S1 of FIG. 2, when a network construction request is issued by an automatic operation using a timer function or a manual operation of an administrator, the network configuration data of the central network management device 7 is transmitted in step S2. A call is made from TDM1 to ISDN based on.

[0007] The call is made to the TD M 2 (step S
Transmitting the data - 3), and call the TD M 2 (step S4) communication path is established between TDM1 and TDM2 (step S5), and at step S6 from TDM1 to TDM2 networks - click configuration de. This network configuration data may be all network configuration data or TDM2
And only those relating to the TDM under it.

In step S7, the TDM 2 analyzes the network configuration data and checks the necessity of constructing a network in a lower TDM. As shown in FIG. 1, when it is necessary to construct a network from TDM2 to TDM4 and TDM5, as shown in steps S9 to S12 and S13 to S16 in FIG.
In step S17, it is checked whether or not the network has been normally established by the control signals between the TDMs. At S18, communication of user data is started. Steps S19 to S28 are TDM1-T
DM3 - networks between TDM6 - the same procedure for building the click.

FIG. 4 is a flowchart showing a network release procedure when the network becomes unnecessary. In step S31, when a network release request is issued by an automatic operation using a timer function, a manual operation of an administrator, or the like, in step S32 based on the network release data of the central network management device 7. A disconnection command is issued to TDM1.

[0010] the cutting instruction at the step S33 is TD M
When done in 2, TD M 2 at step S34 is TDM
4 to send a disconnect signal, to open a communication path from the TD M 2 to TDM4 at step S35. Steps S36 and S37 are similar processes for opening the communication path from TDM2 to TDM5. In step S38, TDM2 is T
If DM1 the lower communication path release completion is reported to at step S39 TDM1 transmits a disconnect signal to TDM2, to open the communication path from the TD M 1 to TDM2 at step S40.

[0011] Steps S42 to S47 are TD
This is a similar procedure for releasing a network between M1-TDM3-TDM6. In step S41, the completion of the release of the communication path is reported from the TDM 1 to the central network management device 7, and the normality is confirmed. Embodiment 2 FIG. 5 is a diagram showing another network configuration example according to the present invention. The components in FIG. 5 are the same as the first components, but the network configuration data transmission method until the final communication path is established is different as shown in FIG. In FIG. 5, when a network construction request is issued in step S51, a calling command is issued to the TDM 1 based on the network configuration data of the central network management device 7 in step S52. ISDN in step S54
TD M 1 via the network performs a call and incoming call processing with respect to all the other TDM, networks at step S55 TDM1 is to every other TDM - click configuration de - transmitting the data. At this time, TDM2 and TDM3 simultaneously establish a user data communication path.

In step S56, the TDM2 to TDM6 analyze the network configuration data, and in step S57
Then, the communication path from TDM1 to TDM4 to TDM6 is disconnected, and then, in step S58, a command to reset the communication path from TDM1 to TDM2 and TDM3 is issued. Next, in steps S59 and S60, the communication paths from TDM2 to TDM4 and TDM5 are reset, and the communication paths from TDM3 to TDM6 are reset. Then checks the control signal established between all TDM in step S61, step S62 Niteyu - The de - starts data communication.

The opening of the network is performed in the same procedure as in the flowchart shown in FIG. In FIG. 1, for example, when a failure occurs in the TDM2 or the communication path to the TDM2, the network can be degenerated except for the TDM2 as shown in FIG. 7 to minimize the damage caused by the failure. FIG. 8 is a flowchart showing a procedure in the case where the above failure of the TDM 2 is detected at the time of constructing the network of FIG. In FIG. 8, at step S71, the network
When a network construction request is issued, the TDM 1 is generated in step S72 based on the network configuration data of the central network management device 7.
Is issued a call command.

In step S73, TD via the ISDN network
M1 makes a call to TDM2, and in step S74, T1
If a failure of the DM2 is detected, the network configuration data of the central network management device 7 is reset in step S75, and at the same time, another communication path is opened in step S76.
Also, depending on the network, the above open processing is not performed.
Networks - click configuration de - may be the data to be changed to TD M 3 and TDM6. Next, step S77
Then, based on the changed network configuration data of the central network management unit 7, the same re-call processing as in FIG. 2 is performed.
Subsequent processing is the same as in FIGS.

FIG. 9 shows the TDM2 during the process shown in FIG.
5 is a flowchart showing a procedure when a failure is detected. When a network construction request is issued in step S81, a call origination command is issued to the TDM 1 based on the network configuration data of the central network management device 7 in step S82. TDM2~TD from TD M 1 at step S83
When a call is made to M6, as shown in step S84, a call is received to TDM3 to TDM6, but step S8.
As shown in FIG. 5, since a failure of the TDM 2 is detected, the communication channel cannot be set. Therefore, step S86
Then, the central network management device 7 resets the network configuration data excluding the TDM2. At this time, TDM3 to TDM6
As shown in step S87 for, for example, ISD
ISDN only when the frequency band used in the N network changes
Perform disconnection, re-calling, and incoming call processing. Open processing of this communication channel
May be unnecessary depending on the network .

[0016] Then, the modified networks in step S88 - transmitting the data to the T DM3~TDM6 - click configuration de. Subsequent processing is the same as in FIG. FIG.
FIG. 11 is a diagram showing a network configuration method according to the present invention when the central network management device 7 fails. FIG. 10 corresponds to FIG. 1 and FIG. 11 corresponds to FIG. When the central network management device 7 fails as shown in FIGS. 10 and 11, for example, a spare central network management device installed in the TDM 2 is used, and the role of the TDM 1 in FIGS.
Let DM2 do it. Therefore, required functions are added to the TDM 2 in advance. In FIG. 11, a function for receiving a call from TDM2 is added to TDM3 to TDM6.

The processing procedures in FIGS. 10 and 11 are the same as those in FIGS. If TDM1 fails, a network without TDM1 in FIGS. 10 and 11 is created, and the procedure is the same as in FIGS. Although each of the embodiments of the present invention is directed to a time division multiplexing apparatus, it can be similarly applied to, for example, a video conference using time division multiplexed image data and audio data.

【The invention's effect】

According to the present invention, a required network can be formed only in a required time zone using the ISDN public network, so that communication costs can be reduced.
Further, when a failure occurs in a time-division multiplexing device or a central network management device in which a failure has occurred, the network is reconstructed by removing the failure, so that the range of the failure is minimized and the reliability of the network is reduced. Can be enhanced.

[Brief description of the drawings]

FIG. 1 is a diagram showing a network configuration according to the present invention.

FIG. 2 is a diagram showing a network construction procedure in FIG. 1;

FIG. 3 is a diagram showing a network construction procedure in FIG. 1;

FIG. 4 is a diagram showing a network release procedure in FIG. 1;

FIG. 5 is a diagram showing another network configuration according to the present invention.

FIG. 6 is a diagram showing a network construction procedure in FIG. 5;

FIG. 7 is a network configuration diagram excluding TDM2 in FIG. 1;

FIG. 8 is a diagram showing a network construction procedure in FIG. 7;

FIG. 9 is a diagram showing a network construction procedure in FIG. 7;

FIG. 10 is a network configuration diagram when a failure occurs in the central network management device of FIG. 1;

11 is a network configuration diagram when a failure occurs in the central network management device of FIG. 5;

[Explanation of symbols]

 1-6 Each time-division multiplexing device 7 Central network management device 8 ISDN network

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H04M 3/00 H04M 3/16-3/20 H04M 3/38-3/40 H04M 7/00-7/16 H04J 3 / 00-3/26 H04L 5/22-5/26

Claims (5)

(57) [Claims] 1. In a multiplex transmission line network constituted by a plurality of time division multiplexers, each of the time division multiplexers is
A network control means for calling, receiving, disconnecting, releasing, etc., an SDN network; a means for transmitting / receiving network configuration data; and a means for analyzing network configuration data. A timer is started or manually called from the time division multiplexing device connected to the central network management device for managing data to form a communication path between the lower and the opposite time division multiplexing device. Sending the above network configuration data,
On the basis of the network configuration data, a call is made and received via the ISDN network with the time-division multiplexing device which is further lower-ordered to form a communication path in sequence, and A network is constructed by transmitting network configuration data, and multiplex communication of user data is performed after control signal communication is established between all of the time division multiplexers.
A network configuration method wherein the ISDN network is opened when the network becomes unnecessary. 2. The time division multiplexing device according to claim 1, wherein said network configuration data is radially transmitted from said central network management device to said time division multiplexing device via said ISDN network. A network configuration method wherein a network is constructed by making and receiving calls via the ISDN network between the networking devices. 3. A network according to claim 1, further comprising means for detecting a failure or a communication failure of said time division multiplexing device, and re-executing said network without said time division multiplexing device. A network configuration method. 4. The central network management device or a time division multiplexing device connected thereto according to claim 1, further comprising a fault detecting means of the central network management device or a time division multiplexing device connected thereto. The network configuration data managed by the spare central network management device connected to the central network management device or the time division multiplexing device lower than the time division multiplexing device connected to the central network management device by detecting the failure of the multiplexing device. A network configuration method wherein the network is re-executed based on the data. 5. The network according to claim 4, wherein each of said time division multiplexing devices is a network managed by said backup central network management device.
Characterized in that the network comprises means for receiving network configuration data and means for performing ISDN call control based on the data.
Configuration method.