JPH11285087A - Switching system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a system stop even if a secondary switch or a central control unit controlling it stops by storing an origination-side and a termination- side subscriber circuits in a primary/tertiary switch wherein a primary and a tertiary switches are integrated and setting a speech path between the origination-side and termination-side subscriber circuits through one operation of the switch. SOLUTION: When origination-side and termination-side subscriber terminals are stored in the same primary/tertiary switch 31, a channel signal from a subscriber terminal 11 is inputted to an input channel 61 of the primary/tertiary switch 31 through a subscriber circuit 21. A terminating terminal 12, on the other hand, is connected to a subscriber circuit 22 and as for a connection with the subscriber terminal 12, the central control unit 41 for connecting to the output channel 72 of the switch 31 sets a speech path between input/output channels 61 and 72 to connect the subscriber terminals 11 and 12. Consequently, the origination side and termination side are connected by the switch 31 without passing through a secondary switch 51, so that the system never stops as a whole in case of a failure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a switching system in an electronic exchange.

[0002]

2. Description of the Related Art Conventionally, large capacity electronic exchanges accommodating a large number of subscribers are generally realized by connecting a plurality of switches and a plurality of central control units. It has a three-stage switch as shown.
In FIG. 2, the input side of the primary switches 131 and 132 is connected to the output side of the subscriber circuits 121, 122, 123 and 124, and the output side of the primary switches 131 and 132 is connected to the input side of the secondary switch 151. Next switch 201,
On the input side of 202, the output side of the secondary switch 151 and on the output side of the tertiary switches 201 and 202, the subscriber circuit 12
1, 122, 123, and 124 are connected to the input side. For this reason, even if the subscriber circuits on the calling side and the called side are accommodated in the same primary switch, the primary switches 131 and 1
32, secondary switch 151, tertiary switch 201, 20
Switching is performed via two and three-stage switches. The details of such a switching system are disclosed in, for example, Japanese Patent Application Laid-Open No. Hei 3-258093.

[0003]

However, in the above-described switching method, it is necessary to always control three switches, ie, a primary switch, a secondary switch, and a tertiary switch. When the secondary switch among the primary switch / secondary switch / tertiary switch stops or fails, or when the central control device that controls the secondary switch stops or fails, the primary switch / tertiary switch There is a problem that the effect is greater than when the switches or the central control device that controls these switches are stopped / failed, and the entire switching system is stopped.

The present invention has been made in view of such circumstances, and aims at simplifying switch control, and in the case where a secondary switch or a central control device for controlling the secondary switch is stopped / failed. It is another object of the present invention to provide a switching system capable of preventing the entire switching system from stopping.

[0005]

According to the first aspect of the present invention, there is provided a primary / tertiary switch in which a primary switch and a tertiary switch are physically integrated.
A primary / tertiary switch 1 when a subscriber circuit on the transmitting side and a receiving side are housed in the same primary / tertiary switch.
In the step, a call path is directly set between the calling side and called side subscriber circuits.

According to a second aspect of the present invention, there is provided a three-stage switch configuration comprising a primary / tertiary switch in which a primary switch and a tertiary switch are physically integrated, and a secondary switch. When the originating side and the terminating side are accommodated in different primary / tertiary switches, the primary / tertiary switch accommodating the subscriber circuit of the originating side is logically operated as a primary switch, and A communication path is set up between the subscriber circuit and the secondary switch, while the secondary switch accommodates a primary / tertiary switch containing a calling subscriber circuit and a receiving subscriber circuit. The communication path between the primary / tertiary switches is set, and the primary / tertiary switch in which the subscriber's circuit on the receiving side is accommodated.
The tertiary switch logically operates as a tertiary switch, and sets a communication path between the secondary switch and the called subscriber circuit.

According to the third aspect of the present invention, the first order / 3 is subordinate to the first order.
The next switch is a time-division switch that operates in a time-division manner.
A space switch is used as the next switch.

According to the present invention, when the subscribers on the transmitting side and the receiving side are accommodated in the same primary / tertiary switch, the primary / tertiary switch does not pass through the secondary switch and is directly transmitted to the transmitting side. And the receiving side is switched, so that software control can be simplified while simplifying the switching path.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the gist of the present invention will be described,
An embodiment of the present invention will be described with reference to the drawings. (1) Summary of the Invention In a general three-stage switch system for constructing a large-capacity switch, switching is usually performed via a primary switch, a secondary switch, and a tertiary switch. When the subscribers on the receiving side and the receiving side are accommodated in the same primary switch, the primary switch does not go through the secondary switch and the originating side and the receiving side are switched directly,
The gist is that the soft control is simplified while the switching path is simplified.

(2) Configuration Next, a switching system according to an embodiment of the present invention will be described with reference to FIG. This switching method
A primary / tertiary switch 31, which has a three-stage switch configuration, in which a primary switch and a tertiary switch are physically integrated,
32. The primary / tertiary switches 31, 32 can accommodate up to a certain number of subscriber circuits 21, 22, 23, 24 determined by the system. Are connected to subscriber terminals 11, 12, 13, and 14, respectively.

As a connection destination of the primary / tertiary switch 31,
Next switch 51, subscriber circuits 21, 22, 23, 24
There is. Primary / tertiary switches 31, 32 have input channels 61-68, and output channels 71 as output channels.
To 78 are provided. Input channel 61 and output channel 71 are connected to subscriber circuit 21, and input channel 62 and output channel 72 are similarly connected to subscriber circuit 22.
It is connected to the.

On the other hand, the input channel 63 and the output channel 7
3 is connected to the secondary switch 51 and is connected to the output channel 91 and the input channel 81 of the secondary switch 51, respectively. Similarly, input channel 64 and output channel 74
Are connected to the output channel 92 and the input channel 82 of the secondary switch 51, respectively. Primary / tertiary switch 32
In the same way as the connection destination of the primary / tertiary switch 31, the input channel 65 and the output channel 75 are connected to the subscriber circuit 23, and the input channel 66 and the output channel 7 are connected.
6 are connected to the subscriber circuit 24, respectively. And
The input channel 67 and the output channel 77 are 2
Output channel 93 and input channel 83 of next switch 51
, And the input channel 68 and the output channel 78 are connected to the output channel 94 and the input channel 84 of the secondary switch 51, respectively.

The primary / tertiary switch 31 includes input channels 61, 62, 63, 64 and output channels 71, 7
A communication path can be set between 2, 73, and 74 arbitrary channels. The primary / tertiary switch 32 can set a communication path between any of the input channels 65, 66, 67, 68 and the output channels 75, 76, 77, 78. The communication paths of the primary / tertiary switches are set by the central controllers 41 and 42, respectively. Similarly, the secondary switch 51 has input channels 81, 82, 83,
A communication path can be set between the output channel 84 and the output channels 91, 92, 93, 94. The communication path is set by the central control unit 43.

Each of the central control units 41, 42, and 43 has communication means for transmitting and receiving call processing information between them. Since this communication means is not directly related to the present invention, its detailed configuration is omitted.
The primary / tertiary switches 31, 32 are time division switches,
A space switch is used as the next switch. The time-division switch and the space switch are well known to those skilled in the art, and are not directly related to the present invention.

In such a configuration, the primary / tertiary switches 31 and 3 have the same subscriber circuit on the transmitting side and the receiving side on the receiving side.
2, it is possible to directly set a communication path between the subscriber circuits on the calling side and the called side with one stage of the primary / tertiary switch. If the calling side and the called side are accommodated in different primary / tertiary switches, the primary / tertiary switch accommodating the subscriber circuit on the originating side logically operates as a primary switch. A communication path is set between the calling side subscriber circuit and the secondary switch, and the secondary switch houses the primary / tertiary switch containing the calling side subscriber circuit and the called side subscriber circuit. The communication path between the primary / tertiary switches is set, and the primary / tertiary switch, in which the subscriber circuit on the receiving side is accommodated, logically operates as a tertiary switch to operate as a secondary switch and the subscriber on the receiving side. By setting a communication path between circuits, a communication path is set between the subscriber circuits on the calling side and the called side. Therefore, compared with the conventional three-stage switch system, in the switching system according to the present invention, when a communication path is set between the subscriber circuits accommodated in the same primary / tertiary switch, the communication route is set via the secondary switch. Instead, the communication path can be connected by a single-stage switch called a primary / tertiary switch.

(3) Operation Next, as a switching method in the above configuration, a method of setting a communication path between subscriber terminals will be described with reference to FIG. First, a case where the calling subscriber terminal and the called subscriber terminal are accommodated in different primary / tertiary switches will be described assuming that the calling subscriber terminal is the subscriber terminal 11 and the called subscriber terminal is 14. I do. Note that the connection method in this case is equivalent to that of the conventional technology.

A call path signal from the calling subscriber terminal 11 is input to the input channel 61 of the primary / tertiary switch 31 via the subscriber circuit 21. Primary / tertiary switch 31
Operates logically as a primary switch, and the central controller 41 controls the input channels 61 and 2 of the primary / tertiary switch 31.
A communication path is set between the next switch 51 and the output channel 73 connected thereto. As a result, the channel signal of the subscriber terminal 11 is input to the input channel 81 of the secondary switch 51.

Next, in the secondary switch 51, the central control unit 43 connects the input channel 81 to the output channel 93 connected to the primary / tertiary switch 32 accommodating the terminating-side terminal. Set. As a result, the channel signal of the subscriber terminal 11 is input to the input channel 67 of the primary / tertiary switch 32. At this time, the primary / tertiary switch 32 logically operates as a tertiary switch.

Next, in the primary / tertiary switch 32 which logically operates as a tertiary switch, the central controller 42 outputs the signal to the subscriber circuit 24 to which the input channel 67 and the subscriber terminal 14 are connected. The communication path is set to the channel 76. As a result, the communication path signal from the subscriber terminal 11 reaches the subscriber circuit 14 via the subscriber circuit 24. As described above, the communication path from the subscriber terminal 11 to the subscriber terminal 14 can be set. In the opposite direction,
The same applies to the communication path signal from the subscriber terminal 14 to the subscriber terminal 11.

Next, a method of setting a communication path when the calling subscriber terminal and the called subscriber terminal are accommodated in the same primary / tertiary switch, which is a feature of the present invention, will be described. Will be described as the subscriber terminal 11 and the called subscriber terminal will be described as the subscriber terminal 12. The channel signal from the subscriber terminal 11 is input to the input channel 61 of the primary / tertiary switch 31 via the subscriber circuit 21.

On the other hand, the subscriber terminal 12 on the receiving side is connected to the subscriber circuit 22, and in order to connect to the subscriber terminal 12, it is necessary to connect to the output channel 72 of the primary / tertiary switch 31. is there. Therefore, the central control unit 41 establishes a communication path between the input channel 61 and the output channel 72, so that the subscriber terminals 11 and 12 are connected. The same applies to a call path signal from the subscriber terminal 12 to the subscriber terminal 11 in the opposite direction.

As described above, according to the present invention, 3
In the case of a stage switch configuration, when setting a communication path, the conventional switch always has to go through the primary switch, the secondary switch, and the tertiary switch. In this case, the primary switch directly switches the calling side and the called side without passing through the secondary switch.

Therefore, in the conventional switching method,
When a failure occurs in the secondary switch or the central control device that controls the secondary switch, all the communication paths cannot be set, but in the switching method according to the present invention, they are accommodated in the same primary switch. The communication path can be set between the subscriber terminals, and the failure of the entire system in the event of a failure is eliminated. In addition, in the connection between subscriber terminals accommodated in the same primary switch, conventionally,
In contrast to the necessity of controlling each of the primary switch, the secondary switch, and the tertiary switch, in the switch system according to the present invention, only the primary switch needs to be controlled. The number is reduced, and the load on the software installed in the central control unit is reduced, so that the processing capacity of the switching system can be improved.

In the above-described embodiment, the number of primary / tertiary switches is described as two in order to simplify the description, but the gist of the present invention is not limited to this, and / 3
There is no limit on the number of next switches. Similarly, the number of subscriber terminals and subscriber circuits has been described as two per primary / tertiary switch, but the number of connections is of course not limited. Further, the number of channels connecting the primary / tertiary switch and the secondary switch is not limited.

Further, in the above-described embodiment, the central control devices 41, 32 serve as the central control devices for controlling the primary / tertiary switches 31, 32 and the secondary switch 51, respectively.
Although described as 42 and 43, a single central control device may be used instead, or control may be performed by a large number of central control devices. In addition, in this embodiment, a time division switch has been described as an example of the primary / tertiary switch, and a space switch has been described as an example of the secondary switch. May be.

[0026]

According to the present invention, when the calling side and called side subscribers are accommodated in the same primary / tertiary switch,
The primary / tertiary switch directly switches the calling side and the called side without passing through the secondary switch. This simplifies the switch control, and also controls the secondary switch or the secondary switch. Even if the control device stops or fails, the entire switching system can be prevented from stopping.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration of an exchange according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining a conventional example.

[Explanation of symbols]

 11-14 subscriber terminal 21-24 subscriber circuit 31,32 primary / tertiary switch 41-43 central controller 51 secondary switch 61-68 input channel 71-78 output channel 81-84 input channel 91-94 output channel

Claims (3)

[Claims] 1. A three-stage switch configuration comprising a primary / tertiary switch in which a primary switch and a tertiary switch are physically integrated, and a secondary switch. When the subscriber circuit is accommodated in the same primary / tertiary switch, a single primary / tertiary switch directly sets a communication path between the subscriber circuits on the calling side and the called side. Switching method. 2. A three-stage switch configuration comprising a primary / tertiary switch in which a primary switch and a tertiary switch are physically integrated, and a secondary switch, wherein the transmitting side and the receiving side are different. When accommodated in the next / tertiary switch, the primary / tertiary switch accommodating the calling side subscriber circuit is logically operated as a primary switch, and the calling side subscriber circuit and the secondary switch are connected. A communication path is set up between the primary switch and the primary / tertiary switch which accommodates the subscriber circuit on the transmitting side and the primary / tertiary switch which accommodates the subscriber circuit on the receiving side in the secondary switch. And the primary / tertiary switch accommodating the subscriber circuit on the receiving side is logically operated as a tertiary switch, and the communication path is set between the secondary switch and the subscriber circuit on the receiving side. A switching method. 3. The switch according to claim 1, wherein a time-division switch that operates in a time-division manner is used as the primary / tertiary switch, and a space switch is used as the secondary switch. Switching method.