JPH06268732A - Path management system of communications network - Google Patents

Abstract

(57) [Summary] [Construction] Maintenance and management of the communication path is performed between the adjacent subscriber exchanges 11 to 13 and the relay nodes 1 and 2, or the path group 31 installed between the adjacent relay nodes 1 and 2. ~
42 and the relay nodes 1 and 2
The paths belonging to the path groups 31 to 42 are used to automatically set up a direct path between the subscriber exchanges to provide a direct link between the subscriber exchanges. Here, the paths 51 to 53 do not need to be terminated at the relay nodes 1 and 2, and therefore pass through the relay nodes 1 and 2. Advantageous Effects of Invention According to the present invention, a channel is set up by a switch using a path, and maintenance and management of a communication path is performed using a newly defined path group. It is possible to achieve both maintenance management and ease.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a path management system for maintaining and managing a communication path in a communication network, and particularly, in the case where a large-scale communication network is hierarchically constructed by using relay nodes. Regarding the path management system.

[0002]

2. Description of the Related Art In a conventional telephone network, a relay exchange is used as a relay node. Also, as a maintenance management unit for communication channels, a path is installed between adjacent subscriber exchanges or relay exchanges via transmission media, and the maintenance person divides the maintenance management of communication channels in the communication network into individual paths. Was there.

When setting up a communication channel passing through the transit exchange, it is necessary to perform channel connection processing not only in the subscriber exchange through which the communication channel passes, but also in all transit exchanges through which the communication channel passes. It was

That is, the path has been used for both the channel setup by each exchange and the maintenance management of the communication path divided for each path.

Next, the conventional technique will be described more specifically with reference to the drawings.

FIG. 3 shows an example of a communication network according to a conventional path management system. In this figure, 3,4
Are relay exchanges 11 to 11 that function as relay nodes.
13 is a subscriber exchange, 151 to 158 are passes, 161 to
168 are channels belonging to the paths 151 to 158, and 71 to 73 are subscriber exchanges 11 to 1 respectively.
The communication terminals 101 to 104 connected to No. 3 are ranges in which a maintenance person performs maintenance management by dividing the communication path in the communication network into paths.

Next, a specific operation of the path management system shown in FIG. 3 will be described.

When a communication network is established or added, paths 151 to 158 are installed between adjacent subscriber exchanges or relay exchanges via a transmission medium. As for the maintenance and management of communication channels, the range 1
These paths are divided into units for each of 01 to 104.

When setting up a communication channel terminated at the communication terminal 71 and the communication terminal 73, it is necessary to perform a channel connection operation in the subscriber exchange 11, the relay exchanges 3, 4 and the subscriber exchange 13. Therefore, the channel setup is complicated and the connection delay time is large. Here, the term “channel end” means an end point of the channel (that is, a portion where a signal can be cut out), and a communication terminal having this point can perform communication using the channel.

[0010]

However, in the conventional path management system, the path is terminated by the transit exchange. Therefore, when setting up the communication channel passing through the transit exchange, not only the subscriber exchange through which the communication channel passes is set up. , It was necessary to perform channel connection processing in all transit exchanges passing through. Here, the path end is the end point of the path (that is, the part where the channel can be cut out).
The relay exchange / subscriber exchange having this point can identify the individual channels included in the path.

Therefore, there are drawbacks that the time required for setting up the communication channel is long and that the load of channel connection / release in the repeater switch is large.

Therefore, in view of the above points, an object of the present invention is to
It is an object of the present invention to provide a path management system that shortens the time required for setting up a communication channel and reduces the load of channel connection / release at a relay node. In addition, another object of the present invention is to efficiently maintain and manage a communication path in a communication network by separating between adjacent subscriber exchanges or relay nodes via a communication medium. To provide a path management system.

[0013]

In order to achieve such an object, the present invention provides an adjacent subscriber exchange in a communication network having a plurality of subscriber exchanges connected via transmission media and at least one relay node. And a relay node, or a path group terminated between adjacent relay nodes, and means for forming a direct link that directly connects the paths belonging to the path group between the subscriber exchanges via the relay node. It was done.

[0014] Here, it is preferable that the maintenance and management of the communication path in the communication network is performed separately for each path group.

As described above, the path management system according to the present invention divides the maintenance and management of the communication path into path groups installed between the adjacent subscriber exchange and the relay node or between the adjacent relay nodes. The relay node provides a direct link between the subscriber exchanges by automatically setting up a direct connection path between the subscriber exchanges by using the paths belonging to the path group.

[0016]

According to the present invention, the channel setup by the exchange is performed by using the path, while the maintenance and management of the communication path is performed by using the newly defined path group. It is possible to achieve both maintenance management and ease.

That is, according to the present invention, the object terminated at the relay node is the path group, and the path does not need to be terminated at the relay node. Here, the end of the path group is the end point of the path group (that is, the part from which the path can be cut out), and the relay node / subscriber switch having this point can identify the individual paths included in the path group.

Therefore, prior to the setup of the communication channel passing through the relay node, the path directly connecting the subscriber exchanges to which the communication terminals terminating the communication channels are respectively connected can be set up automatically.

Thus, when setting up the communication channels, the channels included in the direct path between the subscriber exchanges connecting the subscriber exchanges to which the communication terminals are connected are
It is possible to set up a communication channel passing through the relay node without performing the channel connection operation in the relay node only by performing the operation of connecting to the communication terminal in both subscriber exchanges.

This makes it possible to solve both the drawback that the communication channel setup time becomes long and the drawback that the load of channel connection / release at the relay node is heavy.

In addition, a path group, which is a unit for maintenance and management of a communication path, is provided between an adjacent subscriber exchange and a relay node.
Alternatively, since both are installed as terminating points between adjacent relay nodes, maintenance personnel can maintain and manage the communication path in the communication network between adjacent subscriber exchanges or relay nodes via a communication medium. It can be done separately.

[0022]

EXAMPLES Hereinafter, each example of the present invention will be described in detail.

Embodiment 1 FIG. 1 shows a path management system for a communication network according to a first embodiment of the present invention. In the figure, 1 and 2 are relay nodes, 11 to 13 are subscriber exchanges, 21 to 25 are transmission media, 26 is a relay device for relay connection of path groups,
Reference numerals 31 to 42 are path groups installed between adjacent subscriber exchanges and relay nodes, or between adjacent relay nodes (both are set as termination points), and 51 to 53 are direct connection paths between subscriber exchanges. ˜63 are channels belonging to the direct connection paths 51 to 53 between the subscriber exchanges, 71
Numerals 73 to 73 are communication terminals connected to the subscriber exchanges 11 to 13, and numerals 101 to 104 are ranges in which a maintenance person performs maintenance management by dividing a communication path in the communication network into path groups.

Next, the specific operation of this embodiment will be described.

At the time of establishment or expansion of a communication network, both of them are used as a communication path maintenance management unit between the adjacent subscriber exchange and the relay node via the transmission media 21 to 25 or between the adjacent relay nodes. The path groups 31 to 42, which are termination points, are installed.

Next, the relay nodes 1 and 2 directly connect paths between subscriber exchanges 51 to 53 for connecting all subscriber exchanges to each other.
Automatically set up. Path is relay node 1,2
In this embodiment, the path passes through the relay nodes 1 and 2 since it does not need to be terminated with.

When setting up a communication channel terminated at the communication terminal 71 and the communication terminal 73, a direct connection between the subscriber exchanges connecting the respective subscriber exchanges 11 and 13 to which the communication terminals 71 and 73 are connected is made. The connection operation of the channels in the relay nodes 1 and 2 is performed only by performing the operation of connecting one of the channels 61 included in the path 51 to the communication terminals 71 and 73 in both subscriber exchanges 11 and 13. Instead, set up a communication channel through the relay node.

Further, the maintenance management of the communication path in the communication network by the maintenance person has conventionally been divided for each path unit, but in the present embodiment, it is divided for each path group 31 to 42 which is the maintenance management unit of the communication path. Do it.

Embodiment 2 FIG. 2 shows a second embodiment of the present invention. The difference between the first embodiment shown in FIG. 1 and this embodiment is that a path setup device 200 for performing real-time direct connection path setup between exchanges, a path setup device 200, and subscriber exchanges 11, 12, 13 are provided. Another difference is that a control signal line 201 for transmitting a control signal is provided between the relay nodes 1 and 2.

Next, the specific operation of this embodiment will be described.

At the time of establishing or adding a communication network, both of them are used as a maintenance management unit of the communication path between the adjacent subscriber exchange and the relay node via the transmission media 21 to 25, or between the adjacent relay nodes. The path groups 31 to 42, which are termination points, are installed.

When setting up the communication channels terminated at the communication terminals 71 and 73, if the direct path 51 between the subscriber exchanges exists between the subscriber exchanges 11 and 13. , One of the channels 61 included in the direct path 51 between the subscriber exchanges is connected to the communication terminals 71, 7 in both the subscriber exchanges 11, 13.
3 and the communication channel is set up.

If the direct path 51 between the subscriber exchanges does not exist between the subscriber exchanges 11 and 13,
The subscriber exchange 11 or 13 requests the path setup apparatus 200 to set up the direct path 51 between the subscriber exchanges through the control signal line 201, and the path setup apparatus 200 responds to the request by the relay node 1 through the control signal line 201. , 2 for subscriber switchboard direct connection path 5
Instruct to set up 1.

Upon receiving the instruction, the relay nodes 1 and 2 set up a direct connection path 51 between the subscriber exchanges, and then the subscriber exchanges 11 and 13 select one of the channels 61 included in the direct connection path 51 between the subscriber exchanges. Channel communication terminal 7
The operation of connecting to channels 1 and 73 is performed, and the setup of the communication channel is completed.

If all the channels belonging to the direct path between the subscriber exchanges are not connected to the communication terminal, the subscriber exchanges 11, 12, and 13 have a direct path between the subscriber exchanges (inter-subscriber exchange in FIG. 2). Release of the direct connection path 53) is requested to the path setup apparatus 200 through the control signal line 201. Then the path setup device 2
In response to this, 00 instructs the relay nodes 1 and 2 through the control signal line 201 to release the direct path 53 between the subscriber exchanges. Upon receiving the instruction, the relay nodes 1 and 2 release the direct path 53 between the subscriber exchanges.

Further, the maintenance and management of the communication path in the communication network by the maintenance person is performed separately for each path group 31 to 42 which is the maintenance management unit of the communication path.

[0037]

As described above, in the path management system according to the present invention, the path directly connecting the subscriber exchanges is set up before the communication channel is set up.

Therefore, there is no need for any channel connection operation at the relay node when setting up the communication channel passing through the relay node, and there is an effect that high-speed setup of the communication channel can be realized.

In addition, a path group, which is a unit for maintenance and management of a communication path, is provided between an adjacent subscriber exchange and a relay node.
Alternatively, since both nodes are installed as terminal points between adjacent relay nodes, even if the scale of the communication network is large, the maintenance and management of the communication path by the maintenance person can be easily performed by separating each path group. There is an effect.

[Brief description of drawings]

FIG. 1 is a diagram showing a path management system for a communication network according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a path management system for a communication network according to a second embodiment of the present invention.

FIG. 3 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

1 and 2 relay nodes 3 and 4 relay exchanges 11 to 13 subscriber exchanges 21 to 25 transmission media 26 relay units to relay and connect path groups 31 to 42 between adjacent subscriber exchanges and relay nodes or adjacent relay nodes A path group 51-53 installed between the subscriber exchanges, a direct connection path 61-63, a channel belonging to the direct connection path between subscriber exchanges 71-73, a communication terminal 101-104, a communication path in the communication network is divided into path groups, Range in which maintenance person performs maintenance management 151-158 paths 161-168 Channels belonging to paths 200 Path setup device for setting up a direct connection path between exchanges in real time 201 Between path setup device and subscriber exchange or relay node Control signal line for transmitting control signal

Claims (2)

[Claims] 1. In a communication network having a plurality of subscriber exchanges and at least one relay node connected via a transmission medium, termination between adjacent subscriber exchanges and relay nodes or between adjacent relay nodes. And a means for forming a direct link that directly connects the paths belonging to the path group between the subscriber exchanges via the relay node. 2. The path management system according to claim 1, wherein maintenance management of a communication path in a communication network is performed separately for each path group.