JPS6288468A - Method for controlling outgoing of subscriber - Google Patents

Abstract

PURPOSE:To make sure the outgoing of an important subscriber in an exchange which performs outgoing control in accordance with subscriber housing positions to the time of a traffic jam, by releasing outgoing control irrespectively of the housing position of a specific subscriber. CONSTITUTION:The off-hook (call) of a subscriber is detected from a scanning information source 1 and last look memory 2. Then a call detector logic circuit 4 causes outgoing control information to be sent to a central controller 6 by giving priority to the information of an act memory 3 in accordance with the information of a circuit 5 which instructs outgoing control on the basis of the housing position of an outgoing subscriber and the act memory 3 which indicates whether a subscriber is an important one or not. Therefore, outgoing of an important subscriber becomes possible even when no attention is paied to the housing position of the important subscriber.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for regulating subscriber calls in a telephone exchange using a storage program control method.

〔overview〕

The present invention is a method for restricting calls to subscribers accommodated in a storage program control type exchange, and by prohibiting calls from being restricted to specific subscribers, even when calling is restricted due to abnormal traffic, etc., a specific subscriber cannot be restricted. This allows the sender to send the message reliably.

[Conventional technology]

In the conventional call regulation carried out in a telephone exchange using the storage program control method, the priority order of each subscriber when regulating calls is determined by the position where each subscriber is accommodated in the exchange.

[Problem that the invention seeks to solve]

In such conventional methods, when accommodating the most important subscriber whose calling is not to be restricted in the exchange, sufficient consideration must be given to the location where the subscriber is accommodated, and there is a risk of human error. This system has the disadvantage that it is easy to cause problems, and that when restricting calls from all subscribers accommodated in the exchange, even the most important subscriber cannot make calls.

The present invention aims to eliminate such drawbacks, and aims to provide a subscriber call restriction method that ensures that calls by the most important subscriber are carried out even when calls are restricted.

[Means for solving problems]

The present invention provides a subscriber call restriction method for a storage program control type exchange that restricts calls to accommodated subscribers when abnormal traffic occurs, and determines the order of the call restriction depending on the subscriber's accommodation position. The present invention is characterized in that outgoing calls are prohibited for a specific subscriber among the above subscribers, regardless of the location where the subscriber is accommodated.

[Effect]

In the event of abnormal traffic, the exchange controls subscribers to restrict their outgoing calls. This regulation is performed in an order according to the subscriber's accommodation location. However, there is a method of appropriately determining the accommodating position as a method of securing calls from the most important subscribers, but this method may involve errors during setting, and calls may become impossible when all subscribers are restricted. In the present invention, the effect of the call restriction means does not extend to this most important subscriber, regardless of the accommodation position of this most important subscriber. In other words, the most important subscriber can reliably make the call.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example apparatus in which the method of the present invention is utilized will be described below with reference to the drawings.

The figure is a block configuration diagram showing the configuration of the apparatus of this embodiment. The apparatus of this embodiment includes a scan information source 1 for detecting on-hook and off-hook states of a subscriber, a last look memory 2, an act memory 3, a call detector logic circuit 4, a call restriction instruction circuit 5, and a central control circuit. 6.

Next, the operation of this embodiment device will be explained based on the drawings.

Scan information indicating the subscriber's on-hook and off-hook states is written into the last look memory 2 in a time-sharing manner and read into the call detector logic circuit 4 along with the contents of the act memory 3. The call detector logic circuit 4 determines whether the accommodating position of the subscriber who made the call is the accommodating position where calling is to be restricted as instructed by the call restriction instructing circuit 5, and the act memory 3 according to the program stored in the central control circuit 6. Processing is performed in a time-division manner to determine whether the subscriber is the most important subscriber, and as a result of the processing, it is determined that the accommodation position of the subscriber matches that indicated by the call regulation instruction circuit 5. However, if the subscriber is the most important subscriber in the act memory 3, the call of the subscriber is reported to the central control circuit 6.

〔Effect of the invention〕

As explained above, the present invention not only enables the most important subscriber to make calls when some subscribers are restricted from making calls without paying special consideration to the accommodation location of the most important subscriber, but also enables all subscribers to make calls. This has the effect of allowing the most important subscribers to make calls even when calls are restricted.

[Brief explanation of drawings]

The figure is a block configuration diagram showing the configuration of an apparatus according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Scan information source, 2... Last look memory, 3... Act memory, 4... Call detector logic circuit, 5... Call restriction instruction circuit, 6... Central control circuit.

Claims (1)

[Claims] (1) In a subscriber call restriction method for a storage program control type exchange, which restricts calls from a subscriber accommodated when abnormal traffic occurs, and determines the order of the call restriction according to the subscriber's accommodation position, the above-mentioned A subscriber call restriction method characterized by prohibiting call restriction for a specific subscriber, regardless of the subscriber's accommodation location.