JPS63175553A - Idle line control system - Google Patents

Abstract

PURPOSE:To guarantee a line connection by an incoming call by deciding a maximum call line number from which incoming idle lines are subtracted in advance and assigning the idle line in the range of the maximum call number of times. CONSTITUTION:For example, its own station subscriber line management means 6 is provided and a maximum call line number being the subtraction of incoming idle lines in advance is given at a system initializing state, the operating state of its own station subscriber lines 3-1, 3-2-3-n and the call line number assigned to the call means 5 are managed and the idle line is assigned in the range of the maximum call line number. Thus, the incoming idle lines decided in advance are always ensured and the line connection by the incoming call is guaranteed. The maximum call line number is changed depending on the operation utilizing state of an on-line system.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides an idle line control method for allocating idle lines for calling in an information processing online system connected to a switching network through a plurality of local subscriber lines. Regarding.

〔overview〕

The present invention relates to an idle line control system in an information processing online system that is connected to a switching network by a plurality of local subscriber lines, and allocates a vacant line of the local subscriber lines to a calling means to make a call. By predetermining the maximum number of calling lines by subtracting the above-mentioned idle lines for calls, and allocating the above-mentioned idle lines within the range of this maximum number of calls, line connection by incoming calls is guaranteed.

[Conventional technology]

Conventionally, this type of idle line control system has managed only the usage status of the own subscriber line. In other words, when a call is requested from an online program, an idle line is found and a call is made, and if the call fails, the subscriber line of the local station is placed in an unused state, and if the call is successful, the subscriber line of the local station is placed in an active state. there was.

[Problem that the invention seeks to solve]

In the conventional idle line control method described above, only the usage status of the own subscriber line is managed, and all of the own subscriber lines may be used for outgoing calls, making it impossible to connect the line by incoming calls. There were drawbacks.

SUMMARY OF THE INVENTION An object of the present invention is to provide an idle line control system that guarantees line connection upon incoming calls by eliminating the above-mentioned drawbacks.

[Means for solving problems]

The present invention provides idle line control in an information processing online system that is connected to a switching network by a plurality of local subscriber lines and allocates an unused idle line of the local subscriber line to a calling means to make a call. The method is characterized in that a maximum number of calling lines is determined by subtracting the above-mentioned idle lines for incoming calls in advance, and the above-mentioned idle lines are allocated within the range of this maximum number of calling lines.

(Function) For example, a local station subscriber line management means is provided, the maximum number of calling lines is given at the time of system initialization, and the usage status of the local station subscriber line and the number of calling lines assigned to the calling means are managed. Then, allocate idle lines within the maximum number of calling lines mentioned above.

Therefore, a predetermined vacant line for incoming calls is always secured, making it possible to guarantee line connection for incoming calls.

The maximum number of calling lines can be changed depending on the operational usage of the online system.

It is desirable that the maximum number of calling lines is set at the time of system startup.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an information processing online system according to an embodiment of the present invention. In this embodiment, the switching network 1 has its own subscriber ports vA3-1, 3-2, -1----
--- The host computer 2 is connected and configured via 13-n.

The host computer 2 then runs the online program 4 and its own subscriber lines 3-1, 3-2, ---13-n.
A call originating/receiving means 5 for making and receiving calls using the own subscriber port vA3-1.3-
2. ------- 13-n's own subscriber line management means that manages the usage status and number of calling lines and allocates local subscriber lines to the calling/receiving means 5 within the range of the maximum number of calling lines. 6.

FIG. 2 is an explanatory diagram showing an example of the local subscriber management table 7. As shown in FIG. The own subscriber line management table 7 is referenced and updated by the own subscriber line management means 6, and the own subscriber line management table 7 includes the own subscriber lines 3-1, 3-2,
---The usage status ST of 1 and 3-n and the maximum number of calling lines MC1 and the number of calling lines CC are stored. If the own subscriber line is not in use, the usage status ST is Ol, or if it is used for connection by outgoing call, it is 1, or if it is used for connection by incoming call, it is set to 2. It is recorded (1) in the local subscriber line management table 7.

The feature of the present invention is that, as shown in FIG. 1, a local station subscriber line management means 5 and a local subscriber line management table 7 are provided, and the allocation of idle lines to calls is carried out within the range of the maximum number of calling lines. It's because I did it.

Next, the operation of this embodiment will be explained. As an initial value, the usage status ST corresponding to each own station subscriber line in the own station subscriber line management table 7 is 0, and the maximum number of calls MC is the maximum number of calling lines and the number of calling lines given at system initialization. Set CC to 0.

In response to a call request from the online program 4, the calling/receiving means 5 requests the local subscriber line management means 6 to allocate a local subscriber line to be used for the call. In response to this, the own subscriber line management means 6 determines that the value of the number of called lines CC in the own subscriber line management table 7 is equal to the maximum number of calls MC.
If the value is less than 1 and there is a local subscriber line whose usage status ST is O, add 1 to the number of calling lines CC and set the usage status GST of the local subscriber line to 1. It is assigned to the call originating/receiving means 5, and the assignment request is rejected for others.

The calling/receiving means 5 rejects the call request of the online program 4 if the allocation request is rejected by the own subscriber line management means 6, and if the own subscriber line is allocated, Make a call using .

If the call fails thereafter, a request is made to the local subscriber line management means 6 to return the local subscriber line, and the online program 4 is notified of the call failure. Also, when a call is disconnected, a request is made to the local subscriber line management means 6 to return the local subscriber line, and the online program 4 is notified of the disconnection.

Upon receiving a return request for the own subscriber line, the own subscriber line management means 6 selects the calling line if the usage statement BST corresponding to the own subscriber line is 1 in the own subscriber line management table 7. Subtract 1 from the number CC to set the usage statement BST to O, and in other cases, set the usage status ST to 0.

When there is a connection request due to an incoming call, the calling/receiving means 5 connects to the own station via the own subscriber line management means 6 in the own subscriber line management table 7. The usage state S'F corresponding to the local subscriber line in the subscriber line management table 7 is set to 2, and the online program 4 is notified of the incoming call request. Then, a line connection is established using an empty line reserved in advance for incoming calls.

〔Effect of the invention〕

As explained above, the present invention manages the usage status of the own subscriber line and the number of calling lines, uses the own subscriber line for calling within the maximum number of calling lines, and handles incoming calls. By securing a vacant line in advance for this purpose, connection to the line upon incoming calls is always guaranteed, which has the effect of allowing the line to be connected at any time from the terminal or the host computer of the other party.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an information processing online system according to an embodiment of the present invention. FIG. 2 is an explanatory diagram showing an example of the local subscriber line management table in FIG. 1. 1... Switching network, 2... Host computer, 3-1
~3-n... Own subscriber line, 4... Online program, 5... Call origination/reception means, 6... Own subscriber line management means, 7... Own subscriber line management table.

Claims (1)

[Claims] (1) Connected to the switching network by multiple local subscriber lines,
In the idle line control method of an information processing online system that allocates an unused subscriber line to the calling means and makes a call, the maximum calling line is obtained by subtracting the idle line for incoming calls in advance. An idle line control method characterized in that the number of idle lines is determined and the idle lines are allocated within the range of the maximum number of calling lines.