JP2658806B2 - Packet handler sharing control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packet handler sharing control device, and more particularly to an ISDN packet communication function and a CC.
Recommendation X.ITT. 25 or X. The present invention relates to a packet handler sharing control method for an exchange having an ISDN line bypass function of a dedicated line conforming to the standard 75.

[0002]

2. Description of the Related Art Conventionally, in this type of exchange, IS
Packet handler for DN packet communication and CCIT
Recommendation X.T. 25 or X. A dedicated packet handler for ISDN line detour of a dedicated line conforming to the standard 75 is provided for each.

That is, when communication is performed by the ISDN packet communication function of the exchange, an ISDN terminal is connected to an ISDN network via a packet handler for ISDN packet communication.

[0004] Further, when communication is performed by the ISDN line bypass function of the exchange, the connection between the packet terminal on the transmitting side and the packet terminal on the receiving side connected via a dedicated line is performed through the ISDN network. A packet handler for bypassing the ISDN line is used.

[0005]

In the above-mentioned conventional exchange, a plurality of packet handlers are set for ISDN packet communication and for ISDN line bypass, respectively, and are used exclusively, so that the packet handlers can be efficiently used. There is a problem that it cannot be used.

An object of the present invention is to solve the above-mentioned problems and to provide a packet handler sharing control device which can use a packet handler efficiently.

[0007]

SUMMARY OF THE INVENTION A packet handler sharing control device according to the present invention is a packet handler sharing control device of an exchange for connecting an ISDN terminal to an ISDN network and connecting a packet terminal to a leased line. A plurality of packet handlers connecting the ISDN network and connecting the packet terminal to the ISDN network when the leased line fails, and the plurality of packet handlers in response to a call from the ISDN terminal and a failure notification of the leased line. Means for capturing a free packet handler from among the packet handlers, means for connecting the captured packet handler to one of the ISDN terminal and the packet terminal,
Means for notifying the captured packet handler of control information corresponding to one of the connected ISDN terminal and the packet terminal.

[0008]

Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an ISDN packet communication function according to one embodiment of the present invention. In FIG. 1, when an ISDN packet communication control block (hereinafter referred to as a communication control block) 11 of the exchange 1 receives a call from an ISDN terminal 2 via an ISDN subscriber circuit 3, a packet handler supplement request 101 is sent to a packet handler resource management block. (Hereinafter referred to as a management block) 12.

[0010] In the management block 12, packet handlers that can be used by the exchange 1 are registered in advance, and the usage status of each registered packet handler is stored.
When receiving the packet handler supplement request 101 from the communication control block 11, the management block 12 determines whether or not there is a free packet handler based on the registered information.

When the management block 12 determines that there is a vacant packet handler, it captures the vacant packet handler 4 as a packet handler on the calling side. The management block 12 uses the information of the originating packet handler 4 and information necessary for controlling the packet handler 4 and the like as a packet handler supplementary response 102 as the communication control block 1.
Notify 1.

The communication control block 11 is a management block 12
A packet handler control information notification 103 is sent to the originating packet handler 4 captured in the management block 12 on the basis of the packet handler supplementary response 102 from.

At this time, at the same time, the communication control block 11
The switch 10 outputs a switch connection request 105 to the switch 10 on the basis of 2 and controls the switch 10 to connect the ISDN subscriber circuit 3 to the calling-side packet handler 4.

Next, the communication control block 11
0 to ISDN subscriber circuit 3 and calling side packet handler 4
When the switch connection response 106 indicating the connection with the terminal is received, the destination ISDN trunk 6 is selected. The communication control block 11 includes the selected ISDN trunk 6 and the selected ISDN network 10
0, an incoming call is notified to an ISDN terminal (not shown) on the receiving side.

When a response is sent from the receiving ISDN terminal, the communication control block 11 outputs a packet handler supplementary request 101 to the management block 12. When receiving the packet handler supplement request 101 from the communication control block 11, the management block 12 determines whether or not there is a free packet handler based on the registered information.

When the management block 12 determines that there is a free packet handler, it captures the free packet handler 5 as a destination packet handler. The management block 12 uses the information of the destination packet handler 5 and the information necessary for controlling the packet handler 5 and the like as the packet handler supplementary response 102 as the communication control block 1.
Notify 1.

The communication control block 11 is a management block 12
A packet handler control information notification 104 is sent to the destination packet handler 5 captured by the management block 12 based on the packet handler supplementary response 102 from.

At this time, the communication control block 11 outputs a switch connection request 105 to the switch 10 based on the packet handler supplementary response 102 from the management block 12 and controls the switch 10 to control the originating packet handler 4 and the destination packet Connect to handler 5.

When the communication control block 11 receives the switch connection response 106 indicating the connection between the calling packet handler 4 and the called packet handler 5 from the switch 10, the ISD
The connection processing of the N packet communication is ended.

FIG. 2 is a block diagram showing the configuration of the ISDN line bypass function according to one embodiment of the present invention. In the figure, the exchange 1 includes a packet subscriber circuit 8 and X. 75 dedicated line trunk 9 and the packet terminal 7 75 dedicated line 11
Connected to 0.

An ISDN line detour control block (hereinafter, referred to as a detour control block) 13 of the exchange 1 has the X. 75 dedicated line trunk 9 to X.75 When receiving the line failure / congestion occurrence notification indicating the occurrence of a detour factor such as a failure or congestion of the 75 dedicated line 110, it outputs a packet handler supplement request 111 to the management block 12.

The management block 12 is a detour control block 13
When the packet handler supplement request 111 is received from the server, it is determined whether or not there is a free packet handler based on the registered information.

When the management block 12 determines that there is a free packet handler, it captures the free packet handler 5 as a detour packet handler. The management block 12 notifies the detour control block 13 of the information of the packet handler 5 for the detour and the information necessary for controlling the packet handler 5 and the like as the packet handler supplement response 112.

The detour control block 13 is a management block 12
Packet handler 5 for the detour captured in the management block 12 based on the packet handler supplementary response 112 from
Sends a packet handler control information notification 114 to the server.

At this time, the detour control block 13 outputs a switch connection request 115 to the switch 10 based on the packet handler supplementary response 112 from the management block 12 and controls the switch 10 to control the packet subscriber circuit 8 and the detour route. Is connected to the packet handler 5.

Next, the detour control block 13 switches the switch 1
When the switch connection response 116 indicating the connection between the packet subscriber circuit 8 and the detour packet handler 5 is received from 0, the ISDN trunk 6 is selected. The detour control block 13 selects the selected ISDN trunk 6 and ISDN network 10
A call is made to the detour destination via “0”.

When a response is sent from the detour destination, the detour control block 13 sends a switch connection request 11 to the switch 10.
5 is output, and the switch 10 is controlled to connect the packet handler 5 for the detour and the ISDN trunk 6.

When the detour control block 13 receives the switch connection response 116 indicating the connection between the packet handler 5 for the detour and the ISDN trunk 6 from the switch 10, it outputs a detour generation notification 113 to the packet subscriber circuit 8, The process of generating a detour for the packet terminal 7 ends.

The exchange 1 according to one embodiment of the present invention comprises a switch 10, a communication control block 11, a management block 12, and a detour control block 13. The above-described processing operation is performed in response to the line failure / congestion occurrence notification from the 75 dedicated line trunk 9.

In FIG. In the figure, a case is shown in which a connection is made to a destination packet terminal using the dedicated line 110. X.75 instead of dedicated line 110 The above-described processing operation can be performed even when the 25 dedicated line is used.

As described above, when the ISDN packet communication function is used, the communication control block 11 and the management block 1
2, the packet handlers 4 and 5 are supplemented as necessary, and when the ISDN line detour function is used, the management block 12 and the detour control block 13 supplement the packet handlers 5 as necessary and control the packet handlers 4 and 5. By notifying and using information necessary for ISDN, the packet handlers 4 and 5 can use the ISDN packet communication function and I
It can be physically shared by the SDN line bypass function.

Therefore, unlike the related art, it is not necessary to prepare a dedicated packet handler for each of the ISDN packet communication function and the ISDN line bypass function, so that the packet handler can be used economically and efficiently.

[0033]

As described above, according to the present invention, I
In an exchange connecting an SDN terminal to an ISDN network and a packet terminal to a dedicated line, the ISDN terminal is connected to an ISD network.
N. Connect to the N network and switch the packet terminal to IS
An empty packet handler among a plurality of packet handlers connected to the DN network is captured in response to a call from the ISDN terminal and a failure notification of the leased line, and the captured packet handler is one of the ISDN terminal and the packet terminal. And by notifying the captured packet handler of control information corresponding to one of the connected ISDN terminal and packet terminal, the packet handler can be used efficiently.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an ISDN packet communication function according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of an ISDN line bypass function according to an embodiment of the present invention.

[Explanation of symbols]

 1 switch 2 ISDN terminal 3 ISDN subscriber circuit 4, 5 packet handler 6 ISDN trunk 7 packet terminal 8 packet subscriber circuit 9 X. 75 dedicated line trunk 10 switch 11 ISDN packet communication control block 12 packet handler resource management block 13 ISDN line detour control block 100 ISDN network 110 X. 75 dedicated line

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location H04Q 11/04 9466-5K H04L 11/02 Z

Claims (2)

(57) [Claims] 1. A packet handler sharing control device for an exchange for connecting an ISDN terminal to an ISDN network and connecting a packet terminal to a leased line, wherein the ISDN terminal is connected to the IDN
A plurality of packet handlers for connecting to the SDN network and connecting the packet terminal to the ISDN network when the dedicated line fails, and the plurality of packet handlers in response to a call from the ISDN terminal and a notification of the failure of the dedicated line; Capturing means for capturing a vacant packet handler from among the above; a means for connecting the captured packet handler to one of the ISDN terminal and the packet terminal; and a connection means for the connected ISDN terminal and the packet terminal. Means for notifying control information corresponding to one of the packet handlers to the captured packet handler. 2. The packet according to claim 1, wherein the capturing unit includes a unit that stores a packet handler that can be used among the plurality of packet handlers and a use state of the packet handler in association with each other. Handler sharing controller.