JPH02105757A - Automatic origination control system - Google Patents

Abstract

PURPOSE:To reduce the burden of a central processor by controlling the execution and cancellation of origination control in the common controller of subscribers. CONSTITUTION:Call counting circuit (CNT) 11 which counts calls after detecting the calls from scan information and a signal insertion circuit (INS) 12 which inserts origination controlling announcement into the free time slot of speak signals are additionally provided in a common controller. The CNT 11 detects and counts originating calls from scan information from subscribers through subscriber's modules LM1a-1m and a control circuit (CLT) 5 executes the origination control and stops the sending of the originating call information of a subscriber to be controlled in transmission to a host device and, at the same time, sends transmission controlling announcement to the subscriber to be controlled in transmission in the case of detecting that the number of originating calls of the subscriber exceeds a threshold originating call number of transmission control information. Therefore, the processing quantity of a central processor (CPU) 10 can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic call regulation system for a common control exchange.

[Conventional technology]

Conventionally, in this type of call restriction system, when the central processing unit that controls call processing detects a certain number of calls or more, it decides to implement call restriction, and issues a call restriction announcement to the subscriber who made the call and is subject to call restriction. It carried out outgoing control processing such as transmission.

FIG. 2 is a block diagram of a time division switch showing an example of a conventional automatic call restriction system.

In FIG. 2, a subscriber module (hereinafter referred to as LM) la, ~1 including a subscriber circuit and an analog/digital conversion circuit
m, a line concentration switch (hereinafter referred to as LSW) 2.3 consisting of a time division switch that concentrates call signals from the network and subscribers, respectively, and a line concentration switch (LSW) 2.3 that is assigned addresses corresponding to subscribers and stores scanning information of subscriber lines. A scan memory (hereinafter referred to as SCNM) 4, a control circuit (hereinafter referred to as CTL) 5 of a common control device, a signal insertion circuit (hereinafter referred to as IN5) 6 that inserts scan information into an empty time slot of a call signal, and a time division network (hereinafter referred to as TDNW). ) 7, a call restriction announcement generation circuit (hereinafter referred to as ANM) 8, a call detection circuit (hereinafter referred to as CDL) 9 that detects a call based on scan information, and a central processing unit (hereinafter referred to as CPU) 10.

Scanning information from each subscriber via LMla, ~1m is stored once in SCNM4, inserted into an empty time slot of the call signal at IN56, and then the call is detected by CCl2 via TDNW7 and reaches CPUl0. . When a call is made in a constant state, CPU10 executes outgoing call restriction, and when a subscriber subject to call restriction makes a call, it controls TDNW7 to connect ANM8 and the subscriber subject to call restriction. Set the path between LSW2.

In this way, in this example, CPU10 needs to constantly monitor the number of calls from the call information from CCl2, and while executing call restriction, it must also control the path setting so that the calling subscriber can hear the call restriction announcement. Must be. Also, CCl2
If the system is such that the system interfaces with CPU10 in the form of a queue, there is a possibility that the queue will overflow when all calls are made at once.

[Four problems to be solved by the invention] In the conventional automatic call restriction system described above, the central processing unit monitors the number of calls without processing the call, and when it determines that call restriction is necessary, the central processing unit monitors the number of calls that are subject to restriction. Since it is also necessary to control outgoing calls to call subscribers, there is a drawback that this leads to a reduction in the general call processing ability of the central processing unit. Furthermore, if a large number of calls are concentrated in a short period of time, the processing capacity of the central processing unit may overflow before the outgoing calls are restricted, and the system may become unstable.

[Means to solve the problem]

The automatic call restriction system of the present invention is based on a common control type exchange in which a common control device that commonly controls a plurality of subscribers under a network has a threshold value of 1 for the number of calls for executing call restriction.
a storage means for storing in advance call restriction information including a threshold value for the number of calls for lifting the call restriction and priority class information for call restriction for each subscriber; and a counting means for detecting and counting the calls made by the subscriber. , a control means for controlling transmission of call information of the subscriber to a higher-level device, and a sending means for transmitting a call restriction announcement to the subscriber, wherein the common control device stores the counting result of the call and storage. Based on the outgoing calling restriction information, it is determined whether to implement or cancel outgoing calling restrictions, and when calling is restricted, the sending of calling information of the subscriber subject to outgoing calling restriction to the above-mentioned host device is stopped, and at the same time, the sending of the calling information of the subscriber subject to outgoing calling restriction which made the call is It is characterized by transmitting a call restriction announcement.

〔Example〕

Next, the present invention will be explained with reference to FIG.

FIG. 1 is a block diagram of a time division switch showing an embodiment of the automatic call restriction system of the present invention.

In FIG. 1, the same components as in the conventional example are given the same reference numerals as in FIG. 2. This embodiment includes a call counting circuit (hereinafter referred to as CNT) 11 that detects and counts calls from scan information in a common control device, and a signal insertion circuit that inserts call restriction announcements from ANM8 into empty time slots of call signals. circuit (hereinafter referred to as IN5) 12 is added to the conventional example, and the SC
In NM4, the stored scan information is forcibly rewritten by CTL5, and CTL5 has a threshold number of calls (when this number of calls is exceeded, which class of subscribers is restricted from making calls). Call restriction information including call restriction priority class information for each subscriber is stored in advance.

CNTII detects and counts calls based on scan information from subscribers via LMla, ~1m, and sends the counting results to CTL5. When CTL5 detects a call that exceeds the threshold number of calls in the call restriction information, it executes call restriction, and when a caller in the class subject to call restriction makes a call, S
The scan information of the corresponding address in CNM4 is forced into an idle state and the higher-level device (
At the same time, the LSW 2 switches the announcement signal inserted into the empty time slot of the call signal by the IN 512, and sends the call restriction announcement from the ANM 8 to the subscriber in the call restriction target class.

Note that when the count result by CNT II becomes less than the threshold number of calls, the CTL 5 performs a control process to release the call restriction.

In this way, in this embodiment, transmission regulation is performed only by the common control device without the intervention of the CPU10.

〔Effect of the invention〕

As explained above, the present invention performs control processing for executing and canceling call restriction within the subscriber's common control device, and has the effect of reducing the load on the central processing unit.

It is a block diagram.

la, ~1m...Subscriber module (LM) 2.3.
... Line concentration switch (LSW), 4... Scan memory (SCNM), 5... Control circuit (CTL), 6.1
2...Signal insertion circuit (INS), 7...Time division network (TDNW), 8...Call restriction announcement generation circuit (ANM>, 9...Call detection circuit (CDL)
), 10... central processing unit (CPU), 11... call counting circuit (CNT).

Claims (1)

[Claims] In a common control type exchange, a common control device that commonly controls multiple subscribers under the network controls the threshold value of the number of calls to execute outgoing restriction, the threshold value of the number of calls to cancel outgoing restriction, and the subscriber. a storage means for storing in advance call restriction information including priority class information of another call restriction; a counting means for detecting and counting the calls made by the subscriber; and sending the call information of the subscriber to a host device. and a sending means for transmitting a call restriction announcement to the subscriber, wherein the common control device determines whether to execute or cancel the call restriction based on the call counting result and the stored call restriction information. death,
An automatic call restriction system characterized in that, when calling is restricted, transmission of calling information of a subscriber subject to call restriction to the higher-level device is stopped, and at the same time, the call restriction announcement is sent to the subscriber subject to call restriction who made the call.