JPS59132295A - System for regulating call - Google Patents

Abstract

PURPOSE:To suppress the unnecessary exchange processing by a central controller by calling a subscriber regulated for calling when the number of lines in use belonging to a calling path does not exceeds a prescribed value. CONSTITUTION:A storage device 6 stores the number of lines in use belonging to each path at each transmitting path 3 and a comparator 8 compares the number of lines in use with a prescribed number A. The storage device 6 in a main storage device 5 stores subscriber information corresponding to the transmission path. Further, when the number of lines in use exceeds the prescribed number A, the central controller 4 regulates temporarily the call of the subscriber and the subscriber information is stored in the storage device 6. Then, when the number does not exceed the prescribed number A, the subscriber is called based on the subscriber information stored in the storage device 6 for attaining a desired transmission connection. Thus, the unnecessary exchange processing of the central controller is suppressed.

Description

[Detailed description of the invention] The present invention relates to a call regulation system for automatic exchanges.

Conventionally, in the system of restricting calls based on the load status of the lines of automatic exchanges, it was customary to always reserve a certain number of lines in preparation for emergencies. It was necessary to suspend outgoing calls until the load on the internal line was reduced, but the extension subscriber had no means of knowing the load status of the rotating magnet, and the outgoing calls were repeated unnecessarily.

Therefore, even in the exchange processing within the central control unit, the outgoing call restriction processing is repeated unnecessarily.

According to the present invention, when an extension subscriber is connected to make an outgoing call, if the number of lines in use of lines belonging to a selectable outgoing route exceeds a certain number, the extension subscriber's outgoing calls are restricted, and the subscriber By storing subscriber information corresponding to the outgoing route, and configuring the system to call the subscriber and establish the desired outgoing connection if the number of lines in use does not exceed a certain number,
The purpose is to eliminate the above-mentioned drawbacks and to suppress unnecessary replacement processing of the central control unit as much as possible.

According to the present invention, in an automatic switching system, the number of lines in use of the lines belonging to each route is always stored for each originating route.
a storage device, a ratio means for comparing the number of lines used stored in the first storage device with an arbitrary constant number when an extension subscriber makes a call, and a method for transmitting subscriber information of the subscriber. If the number of lines in use of lines belonging to the calling route selected by the calling subscriber exceeds a certain number, the subscriber is temporarily restricted from making calls. The subscriber information of the subscriber is stored in the second storage device corresponding to the route, and if the number does not exceed a certain number, the subscriber is called and a desired outgoing connection is made. A transmission restriction method is obtained.

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

FIGS. 1 and 2 are relay system diagrams showing an embodiment of the present invention. FIG. 1 shows a case in which connection to a desired route is not possible, and FIG. 2 shows a case in which connection is possible.

In FIG. 1, 1 is a communication path switch, 2 is an extension subscriber, 3 is a calling route with n lines, 4 is a central control unit, 5 is a main storage device, and 6 is a main storage device for storing subscriber information. 2 a storage device; 7 a first storage device that stores the line usage for each calling route; 8 a comparison circuit that compares the number of lines used with a constant number; 9 a constant storage unit; and 10 a calling register. 11 is a busy tone sending device, 12 is a calling signal sending device, and 13 is a reserved call ψ path.

In FIG. 1, it is assumed that an extension subscriber 2 dials a number to select a calling route 3 having n lines. In addition, the central control device 4 constantly monitors the number of lines in use for each outgoing route, and when the subscriber 2 performs the dialing operation, the strategy uses mC<n) that exceed a certain number A. Assume that the line is in use and that m is stored in the first storage device 7. At this time, the central control device 4
The first storage device 7 is activated by the subscriber 2's dial operation.
The comparison circuit 8 compares the read value m of the memory device 9 with the read value A of the storage device 9.
It is found that the number of lines belonging to the strategy is already in use, exceeding a certain number A, and a busy tone is sent to the subscriber 2 via the busy tone transmitting device 11, and the main memory is Subscriber information of subscriber 2 is stored in a second storage device 6 in device 5.

Next, in FIG. 2, the central control unit 4 controls the number of lines in use for the sending route 3 from m ((n) to m'(<A), so that the number of lines in use for that route 30 remains constant. Knowing that the number has become less than or equal to a number of At the same time as calling the subscriber and sending out a paging signal via the signal sending device 12, a call path 13 is reserved with a vacant line i belonging to the strategy in question, and if necessary, connection processing with the calling register trunk is executed. .

As explained above, the present invention makes it possible to suppress unnecessary outgoing connection processing when the number of used lines belonging to an outgoing route does not exceed a certain number.

[Brief explanation of drawings]

FIG. 1 and FIG. 2 are relay stand system diagrams showing two cases of an embodiment of the present invention.

Claims (1)

[Claims] In the automatic exchange, a first storage device that constantly stores the number of lines in use of lines belonging to each strategy for each outgoing route;
ratio means for comparing the number of lines used stored in the first storage device with an arbitrary fixed number when an extension subscriber makes a call; and storing subscriber information of the subscriber in correspondence with the calling route. If the number of lines in use of the line belonging to the calling route selected by the calling subscriber exceeds a certain number, the subscriber is temporarily restricted from making calls. Correspondingly, the subscriber information of the subscriber is stored in the second storage device, and if the number does not exceed a certain number, the subscriber is called and a desired outgoing connection is made. .