JP3437741B2 - Private branch exchange-computer interlocking system - Google Patents

Description

Detailed Description of the Invention

The present invention relates to a private branch exchange-computer interlocking system in which a private branch exchange and a computer are connected and the exchange processing is performed by the private branch exchange and the computer. In particular, when the connection between the private branch exchange and the computer fails, the system is started up early. It is related to the configuration to raise.

[0002]

2. Description of the Related Art A private branch exchange (PBX) is connected to a computer, and a PBX-computer interlocking system (Com) for performing exchange processing by the private branch exchange and the computer.
API) is known. In such a PBX-computer linked system, a TCP / IP connection between the PBX and the computer is established due to a failure of the PBX and a restart of the PBX, or a failure of a protocol control unit that controls TCP / IP with the computer. When disconnected, this disconnection was detected by the transmission timeout on the computer side. That is, when the connection between the PBX and the computer is disconnected, this is detected from the computer side.

[0003]

However, in the above method, it takes about 10 minutes for the computer to detect the disconnection of the connection, and the service is stopped during that time. For example, since the redundant private branch exchange is basically restarting on time because the system is switched once a day, the frequency of occurrence is high, and 10 minutes of service interruption occurs each time. That was a huge problem.

From this point of view, it has been desired to realize a private branch exchange-computer interlocking system capable of promptly restarting the service even if the connection between the private branch exchange and the computer occurs.

[0005]

The present invention adopts the following constitution in order to solve the above-mentioned problems. <Structure of Claim 1> In a private branch exchange-computer interlocking system in which a private branch exchange and a computer are connected and the private branch exchange and the computer perform exchange processing, a communication connection for performing normal data communication between the private branch exchange and the computer. A notification connection separate from that is provided, and the private branch exchange is provided with an open request means for making an open request through the notification connection when the restart processing occurs in the private branch exchange, and the computer receives the open request from the open request means. In this case, the private branch exchange-computer interlocking system is provided with a connection control means for reconnecting the communication connection.

<Explanation of Claim 1> The restart processing of the private branch exchange means that the private branch exchange has a failure or the like and is recovered, or the system is switched by a redundant private branch exchange. The state in which the exchange is restarted. In such a case, the open request means issues an open request to the computer via the notification connection. When the computer receives the open request, it reconnects the communication connection. The reconnection process is, for example, to temporarily release the half-open communication connection, then issue an open request to the private branch exchange, and the private branch exchange side accepts the request to open the communication connection again. The state established. Also, the communication connection and the notification connection are TCP
/ IP connection, but may be a connection of a protocol other than this.

According to the first aspect of the present invention, by virtue of such a configuration, even when the communication connection between the computers is disconnected due to the restart of the private branch exchange, the restoration of this communication connection can be made earlier (in the private branch exchange). It is possible to do it immediately after the restart is completed).

<Structure of Claim 2> In Claim 1, one set of a connection consisting of a communication connection and a notification connection is provided for two systems, an act system normally used and a standby system for switching, and an act system. If a failure occurs in the act system protocol control unit and the standby system protocol control unit that performs protocol control of each connection of the standby system and the private branch exchange, and if a failure occurs in the act system protocol control unit, the standby system Open requesting means for making an open request through the notification connection and the computer when the open requesting means is provided to the open requesting means, the actuating communication connection is released and the standby communication connection Make a more open request, and act as a stamper Private branch exchange, characterized in that it comprises a connection control unit that performs system switching into the system - a computer linked system.

<Explanation of Claim 2> In the invention of Claim 2, in the invention of Claim 1, an act system which normally uses one set of a connection for communication and a connection for notification and a standby for switching. Two systems are provided, and when a failure occurs in the protocol control unit that controls the protocol of these connections, the connection is switched from the act system to the standby system.

Here, the protocol control unit is, for example,
Although it is a TCP / IP control package for controlling TCP / IP, it may be a package for controlling protocols other than TCP / IP.

According to the second aspect of the present invention, because of the above configuration, even if the communication connection between the private branch exchange and the computer is cut off due to a failure of the act system protocol control unit, the standby system is used for notification. By using the connection, the connection can be restored earlier.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. << Specific Example 1 >><Configuration> FIG. 1 is a block diagram showing a specific example 1 of the private branch exchange-computer interlocking system of the present invention. The illustrated system includes a private branch exchange (PBX) 1, a computer 2, a protocol control unit (CCGTCP) 3, a LAN board 4, a communication connection A, and a notification connection B.

The private branch exchange 1 is an exchange that accommodates a telephone terminal, a trunk line, etc., which are not shown in the figure, and performs exchange processing of these telephone terminals and trunk lines, and is provided with an open requesting means 10. The open request means 10 is a means for making an open request through the notification connection B when the restart processing occurs in the private branch exchange 1, and is functionally configured by hardware or a program and a CPU that executes the program. There is.

The computer 2 is a computer for performing various controls of the private branch exchange 1, and is provided with a connection control means 20. The connection control means 20 has a function of reconnecting the communication connection A when receiving an open request from the open request means 10 of the private branch exchange 1.

The protocol control unit 3 is a TCP / IP communication control package as an interface for performing protocol control with the computer 2 via the communication connection A. The LAN board 4 is an interface on the computer 2 side in the communication connection A. Then, the protocol control unit 3 and the LAN board 4 are connected by a cable, and a communication connection A and a notification connection B are provided here.

The communication connection A is a connection provided between the protocol control unit 3 and the LAN board 4 and used for normal communication. Also, notification connection B
Immediately after the restart of the private branch exchange 1, the open request means 10 of the private branch exchange 1 communicates with the computer 2 to notify that the connection has been disconnected due to the restart. It is a connection provided separately from the connection A.

<Operation> In order to restore the connection between the private branch exchange 1 and the computer 2 early when the private branch exchange 1 is restarted, the notification connection B is used when the private branch exchange 1 is restarted, and the private branch exchange 1 A connection open request is issued to the computer 2. In response to this, the computer 2 side recognizes the restart of the private branch exchange 1 and re-establishes the connection to restore the connection early. Hereinafter, such operation will be described in detail.

FIG. 2 is an operation sequence chart of the embodiment 1 of the private branch exchange-computer interlocking system of the present invention. The following steps correspond to the processing of the circled numbers in the figure.

[Step S1] In addition to the normally used communication connection A, a notification connection B is prepared and used. The computer 2 always waits for an open request from the private branch exchange 1 for the port of the notification connection B (listen by Passive_Open).
State). Incidentally, here, the private branch exchange 1 and the computer 2 use the connection A for communication and use TCP / TCP.
It is assumed that communication has been established by the IP connection.

[Step S2] When the private branch exchange 1 is restarted, after the restart is completed, the open request means 10 uses the notification connection B to send the IP on the computer 2 side.
Make an open request by specifying the address + port number.
The online start indicates the timing of restarting the private branch exchange 1, and the LANC start indicates the timing of starting the protocol control unit 3.

[Step S3] When the connection control means 20 on the computer 2 side receives the request to open the notification connection B, it recognizes that the private branch exchange 1 is restarted / finished, immediately disconnects the notification connection B, and then again. Keep it open.

[Step S4] The computer 2 side establishes a communication connection A that is half-open (the computer 2 side recognizes that it is in an open state, but is disconnected from the private branch exchange 1 side). release.

[Step S5] The computer 2 makes an open request to the communication connection A, the communication connection A is established again, and communication becomes possible.

<Effect> As described above, according to the first specific example, even if the communication connection between the computers 2 is disconnected due to the restart of the private branch exchange 1, it takes about 10 minutes to restore the connection. It becomes possible to carry out the operation earlier (immediately after the completion of the restart of the private branch exchange 1).

<Specific example 2> In the specific example 2, in addition to the configuration of the specific example 1 described above, an act system that normally uses one set of a connection including a communication connection and a notification connection and a standby system for switching. The above two systems are provided, and the connection is switched from the act system to the standby system when a failure occurs in the protocol control unit that controls the protocol of these connections.

<Structure> FIG. 3 is a structural diagram showing a specific example 2 of the private branch exchange-computer interlocking system of the present invention.
The illustrated system includes a private branch exchange 1, a computer 2, an act system protocol control unit 3a, a standby system protocol control unit 3b, an act system LAN board 4a, a standby system LAN board 4b, and an act system communication connection A and It comprises a notification connection B, a standby communication connection C, and a notification connection D.

The private branch exchange 1 has an open requesting means 11
The open requesting means 11 has the function of the open requesting means 10 of the first specific example, and when the failure occurrence of the act-related protocol control section 3a is detected, the notification connection D of the standby-related system is provided. Through
It has the function of making an open request. Further, the computer 2 is provided with a connection control means 21, and this connection control means 21 has the same function as the connection control means 20 of the specific example 1, and receives an open request from the open request means 11. If
It has a function of releasing the connection A for communication of the act system and making an open request from the communication connection C of the standby system.

The act-system and standby-system protocol control units 3a and 3b respectively have the same TC as in the first embodiment.
It is a package for P / IP communication control (CCGTCP), and is a LAN board 4a for act and standby systems.
Reference numerals 4b are LAN boards similar to those of the first specific example. The ACT communication connection A and the notification connection B are connections provided between the ACT protocol control unit 3a and the LAN board 4a, and the standby communication connection C and the notification connection. D is the standby protocol control unit 3b
And a LAN board 4b.

<Operation> First, in a normal operation, the private branch exchange 1 and the computer 2 use an act system connection. In this state, when a failure occurs in the private branch exchange 1 and the private branch exchange 1 is restarted, the operation is the same as that of the specific example 1.

Next, the operation when a failure occurs in the act-based protocol control unit 3a is as follows. Figure 4
9 is an operation sequence chart of Specific Example 2. Also in the second specific example, the following steps correspond to the processing of the circled numbers in FIG.

[Step S1] In addition to the ACT communication connection A that is normally used, a standby notification connection D that is switched when an error occurs in the ACT protocol control unit 3a is prepared and used. The computer 2 always waits for an open request from the private branch exchange 1 for the port of the notification connection D (Passive).
(Listen state by _Open).

[Step S2] When the private branch exchange 1 detects a failure of the protocol control unit 3a of the act system, the open request means 11 uses the notification connection D of the standby protocol control unit 3b as its standby, An open request is made by designating the IP address + port number of the computer 2.

[Step S3] When the computer 2 receives the open request from the notification connection D,
The connection control means 21 recognizes the occurrence of a fault in the act-based protocol control unit 3a on the private branch exchange 1 side. As a result, the notification connection D is immediately disconnected, and the waiting for opening is resumed.

[Step S4] The connection control means 21 on the side of the computer 2 releases the act communication communication connection A which is half open due to the failure of the act protocol control unit 3a.

[Step S5] The connection control means 21 on the computer 2 side performs act / standby system switching, and issues an open request to the private branch exchange 1 via the communication connection C of the old standby system. Private branch exchange 1
Accepts this open request, performs act / standby system switching, and establishes the communication connection C, whereby communication by the old standby system becomes possible.

<Effect> As described above, according to the specific example 2, the communication connection A between the private branch exchange 1 and the computer 2 is caused by the failure of the act-based protocol control unit 3a.
Even if is disconnected, the connection can be restored earlier by using the notification connection D of the standby system.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a specific example 1 of a private branch exchange-computer interlocking system of the present invention.

FIG. 2 is a sequence chart showing an operation of a specific example 1 of the private branch exchange-computer interlocking system of the present invention.

FIG. 3 is a configuration diagram of a specific example 2 of the private branch exchange-computer interlocking system of the present invention.

FIG. 4 is a sequence chart showing an operation of a specific example 2 of the private branch exchange-computer interlocking system of the present invention.

[Explanation of symbols]

1 Private branch exchange (PBX) 2 computers 3 Protocol control unit (CCGTCP) 3a Act protocol control unit 3b Standby system protocol controller 10, 11 Open request means 20, 21 Connection control means A communication connection B notification connection

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Claims (2)

(57) [Claims] 1. A private branch exchange-computer interlocking system in which a private branch exchange and a computer are connected and exchange processing is performed by the private branch exchange and the computer, and a communication connection for performing normal data communication between the private branch exchange and the computer. Is provided with another notification connection, the private branch exchange, when the restart processing occurs in the private branch exchange, through the notification connection, comprises an open request means for making an open request, the computer, from the open request means A private branch exchange-computer interlocking system comprising connection control means for performing reconnection processing of the communication connection when an open request is received. 2. The method according to claim 1, comprising a communication connection and a notification connection.
A set of two connections, an act system normally used and a standby system for switching, are provided, and an act system protocol control unit and a standby system protocol control unit for performing protocol control of each connection of the act system and the standby system. , An open request means provided in the private branch exchange to make an open request through the standby system notification connection when a failure occurrence in the act system protocol control unit is detected; When an open request is received from the requesting means, the act communication communication connection is released, and an open request is issued from the standby communication connection to switch the system from the act system to the standby system. Characterized by having a connection control means Internal exchange - computer interlocking system.