JPH0476146B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a switched line automatic origination connection control system for connecting between a host computer and a terminal device in a data communication system using a telephone switched network.

[Conventional technology]

Traditionally, an outgoing connection between a host computer and a terminal device via a switched telephone network is a logical message transfer path between an application program running on the host computer and the terminal, which is a logically independent operating unit on the terminal. By issuing a connection request for a certain session, the information necessary for the call is extracted from the terminal control block created for each terminal for session control and passed to the call processing means. The transmission processing means executes transmission processing and notifies the application program of the result as a session establishment completion event.

[Problem that the invention seeks to solve]

The conventional outgoing connection processing between the terminal device and the host computer described above is executed in addition to the session connection request made by the application program, so the host computer connects all terminals to which outgoing connections are made via the network. The disadvantage is that it requires system generation. In addition, the host computer has the disadvantage that it is necessary to change the network system generation every time the number of connected terminals increases or decreases.

[Means for solving problems]

The switched line automatic originating connection control system of the present invention includes, in addition to the conventional switched line automatic originating connection control system, an input means for inputting from an application program necessary for connection, and control necessary for controlling the switched line and terminals. Control block management means for managing blocks and initializing the control block based on information passed from the input means at the time of transmission; activation means for activating the transmission processing means; and exchange line transmission using the conventional transmission processing means. It has a determining means for determining a processing completion result, and a notifying means for notifying a transmission instruction application program of a transmission processing result based on the determination result from the determination means.

〔Example〕

An embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1, one embodiment of the present invention includes a host having an application program 2, input means 3, control block management means 4, starting means 5, origination processing means 6, determination means 7, and notification means 8. It is composed of a computer 1, a modem 9, a network control unit NCU 10, a subscriber line 11, a telephone switching network 12, a terminal device 13, and a terminal 14.

Referring to FIG. 2, the input means 3 includes a connection information input section 21, a control block management means starting section 22,
and a startup result reporting section 23.

Referring to FIG. 3, the control block management means 4
The activation request type determination unit 31, the subscriber line control block return unit 32, the terminal control block return unit 33,
Participating line control block acquisition unit 34, terminal control block acquisition unit 35, link setting unit 36, dial number setting unit 37, terminal control information setting unit 38, rotation control information setting unit 39, activation means activation unit 3A, normal response return unit 3B, and an abnormal response return section 3C.

Referring to FIG. 4, the activation means 5 includes a transmission processing means activation section 41. As shown in FIG.

Referring to FIG. 5, the determining means 7 includes a normality determining section 71, a control block management means starting section 72, and a notifying means starting section 73.

Referring to FIG. 6, the notification means 8 includes a call completion result notification section 81.

Next, the operation of the present invention will be explained with reference to the drawings.

First, the application program 2 inputs dial number information necessary for outgoing processing, line control information after line connection, and terminal control information from the input means 3. The input means 3 inputs this information through the connection information input section 21. These pieces of information are set in a line control block (not shown) and a terminal control block (not shown) for outgoing calls. For this setting, the control block management means 4 is operated by the control block management means starting section 22 shown in FIG. The control block management means 4 uses the activation request type determination unit 31 to determine that the activation request type is a control block acquisition request. When the result of this determination indicates control block acquisition, the joining circuit control block acquisition section 34 acquires one joining circuit control block from the joining circuit control block free pool. Once acquired, the terminal control block acquisition unit 35
One terminal control block is acquired from the terminal control block free pool. If these processes fail, the abnormality response return unit 3C returns a signal to the input means 3 indicating that the transmission activation is abnormal.
Thereby, the input means 3 notifies the application program 2 of the outgoing activation abnormality from the activation result reporting unit 23. On the other hand, if the control block acquisition process is successful, the ring setting section 36 sets up a ring between the joining circuit control block (not shown) and the terminal control block (not shown). Next, the dial number setting section 37 sets the dial number in the terminal control block, and the terminal control information setting section 3
8, terminal control information is set in the terminal control block. Subsequently, after the line control information setting section 39 sets the line control information in the subscriber line control block, the starting means 5 is started by the starting means starting section 3A. In response to this, the transmission processing means activating section 41 of the activation means 5 activates the conventional transmission processing means 6. In response to this activation, the transmission processing means 6 executes transmission processing between the host and the terminal. Then, a signal indicating that the transmission process has been successfully started is returned to the input means 3. As a result, the input means 3 uses the activation result reporting section 23 to notify the application program 21 that the transmission activation is normal. After this, when the transmission processing is completed, a transmission completion signal is sent from the transmission processing means 6 to the determination means 7. Based on this, the normality determining section 71 of the determining means 7
It is determined whether the call completion result is normal or not.
If it is determined that there is an abnormality, the control block management means 4 is activated by the control block management means activation section 72 in order to return the control block to the pool. Based on this, the activation request type determining unit 31 of the control block management means 4 determines that the activation request type is control block return. Based on this determination result, the joining circuit control block return unit 32 returns the joining circuit control block to the pool, and the terminal control block return unit 33 returns the terminal control block to the pool. Next, the normal response return section 3B notifies the determination means 7 of the completion of the control block return process. As a result, the determining means 7 activates the notifying means 8 by means of the notifying means activating section 73 in order to notify the application program of the abnormal completion of the transmission.
On the other hand, if the normality determination unit 71 of the determination unit 7 determines that the call is normal, the notification unit 8 is activated by the notification unit activation unit 73 in order to notify the application program of the abnormal completion of the transmission. In response to this, the transmission completion result notification section 81 of the notification means 8
The application program is notified of the call completion result.

〔Effect of the invention〕

As explained above, the present invention dynamically acquires a control block necessary for outgoing processing from a free pool, sets information necessary for outgoing processing input from an application program in the control block, and By making a call to a terminal according to a predetermined method and automatically making a connection, there is an effect that there is no need to change the network system generation due to an increase or decrease in the number of terminals to be connected. Furthermore, even in a large-scale switching network with many connected terminals, the host computer can manage the line control blocks and terminal control blocks for the number of subscribed lines in separate pools to reduce the memory required for terminal control. There is also the effect of reducing costs.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing one embodiment of the present invention, FIG. 2 is a flowchart showing the configuration of the input means 3 in FIG. 1, and FIG.
1 is a flowchart showing the configuration of the control block management means 4 in FIG. 1, FIG. 4 is a flowchart showing the configuration of the starting means 5 in FIG. 1, and FIG.
and FIG. 6 is a flowchart showing the configuration of the notification means 8 in FIG. In FIG. 1, 1... host computer,
2... Application program, 3... Input means, 4... Control block management means, 5... Starting means, 6... Outgoing processing means, 7... Determination means, 8
... Notification means, 9 ... Modem, 10 ... NCU,
11... subscriber line, 12... telephone exchange network, 13...
...terminal device, 14...terminal.

Claims (1)

[Claims] 1. A switched line automatic originating connection control system that has a switched line originating processing means and controls the connection of the switched line, which is a physical message transfer route between a host computer and a terminal device, based on originating instructions from an application program. The control block manages input means for inputting information necessary for connection and control blocks necessary for controlling exchange lines and terminals, and performs initialization processing of the control blocks using information passed from the input means when making a call. a control block management means, a starting means for activating the transmission processing means, a determination means for determining the effect of the switched line transmission processing by the transmission processing means, and a transmission processing result based on the determination result from the determination means for issuing the transmission instruction. 1. A switched line automatic origination connection control system, comprising: notification means for notifying an application program.