KR20000004586A - Terminating rejection method about specific number in private exchange - Google Patents

Abstract

PURPOSE: A terminating rejection method about a specific number is provided in a private exchange. CONSTITUTION: A terminating rejection method about a specific number requests (306) a telephone number of a sending man by using a predetermined signal method if a call is terminated. If the telephone number of the sending man is received from a counterpart station, the terminating rejection method compares (310) the telephone number with a terminating rejection telephone number registered in a terminating rejection table of a private exchange. If the telephone number equals to the registered telephone number, the method outputs (326) a busy tone to the sending man. Thereby, a selective telephone receiving is possible.

Description

How to reject call for specific number in private exchange

The present invention relates to a call rejection method of a communication device, and more particularly, to a call rejection method in a private exchange.

Recently we are living in a flood of information. Such information is mostly made up of mass media such as newspapers and televisions, and various information is exposed through media such as internet communication and telephone. This information has increased with the development of communication networks. As we have come to see so much information, it has become increasingly recognized as information pollution rather than enriching our lives. A typical example of this is a telephone for commercial advertising and promotion through telephone. There is a case in which the telephony communication uses a single line personally, and there is a method using a private exchange which is used to use a small number of trunk lines by a plurality of extension subscribers using a switching method. At this time, private exchange is used by many people in places such as companies to use a few lines. Thus, when an unnecessary call is occupied continuously by a single line, waste of the line is generated, and the company also causes a problem of reducing work efficiency of employees. In addition, the user who receives the call recognized as the information pollution feels unpleasant. Therefore, there is a demand for a method using a private exchange to prevent a call reception that is recognized as information pollution.

It is therefore an object of the present invention to provide a method for rejecting a call for a specific number in a private exchange.

The present invention for achieving the above object is a method for selectively performing a call according to the caller in a private exchange, when a call is received requesting the caller's telephone number using a predetermined signal method to the exchange exchange, and the Receiving the caller's telephone number from the large country, comparing the caller's number registered in the rejection table of the private exchange, and if the phone number is the same as the telephone number registered in the rejection table, the visitor receives the busy tone. Characterized in an output bin.

1 is a block diagram of a private exchange to which the present invention is applied;

2 is a control flowchart for incoming calls according to a preferred embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a private exchange to which the present invention is applied.

The control unit 111 controls the overall operation of the private exchange. In particular, the control unit 111 controls the call rejection for the specific number according to the present invention. The memory unit 112 stores data necessary for the control of the control unit 111 and temporarily stores data generated during the control. In addition, the memory unit 112 stores a table of specific telephone numbers according to the call rejection according to the present invention. To illustrate this is shown in Table 1 below.

turn Do Not Disturb Phone One 123-2345 2 345-4567 3 456-5678 ··· ···

Hereinafter, Table 1 will be referred to as a rejection table. The switch unit 113 performs switching for connection of an incoming call, a call for origination, or the like for transmission of a signal for transmission and reception under the control of the control unit 111. The analog subscriber unit 114 and the digital subscriber 115 are connected to a plurality of analog subscribers and a plurality of digital subscribers, respectively, and detect an event generated in the subscriber phone and output the event to the controller 111. In addition, the analog subscriber and the digital subscriber are collectively referred to as an extension subscriber. For example, an event generated at this time may include a hook on / off of a phone. Dual Tone Multi-Frequency (hereinafter referred to as DTMF) receiving unit 116 receives and analyzes the DTMF signal received from the subscriber station and the DTMF signal received from the network access unit 122 under the control of the control unit 111 and analyzed. The DTMF signal is converted into a digital signal and output to the control unit 111. The DTMF generator 117 generates a DTMF signal under the control of the controller 111 and outputs the DTMF signal to the switch 113. The external connection unit 118 is connected to the control unit 111 and is connected to a maintenance and administration PC (hereinafter referred to as MAP) 200 to perform an interface of data for maintenance and management. In addition, the external connection unit 118 outputs and prints to the printer when receiving the printing data from the control unit 111. The ring signal generator 119 generates a ring signal under the control of the controller 111 and outputs the ring signal to the switch 113. Accordingly, the ring signal is supplied to the subscriber station by the switching operation of the switch 113. The tone generator 120 generates dial tones and busy tones under the control of the controller 111 and outputs them to the switch 113. The R2 signal processor 121 performs an R2 signal process under the control of the controller 111. In particular, according to the present invention, the reception of the caller's telephone number of a call received from the public network through the R2 signal is required. Here, the telephone number is a unique number assigned to a wired or wireless communication subscriber and refers to a telephone number, a facsimile number, a mobile phone number, and the like. The network connection unit 122 notifies the event according to the incoming call when an event occurs according to the incoming call from the external public network, and performs the connection and disconnection of the incoming call under the control of the controller 111.

The MAP 200 generates data for maintenance and management according to an operator's key input and outputs the data for maintenance and management to the external connection unit 118 of the private exchange. Particularly, the MAP 200 records data of a telephone number for registering in a call reject table according to the present invention. Output to the exchange.

2 is a control flowchart of call reception according to a preferred embodiment of the present invention.

Hereinafter, a process of rejecting a call of a specific number will be described in detail with reference to FIGS. 1 to 2. The control unit 111 maintains the standby state in step 300. When an event occurs from the outside, the control unit 111 proceeds to step 302 to check whether the call is received from the public network from the network connection unit 122. The control unit 111 proceeds to step 304 when the event according to the call from the public network in step 302, and proceeds to step 330 when the event does not correspond to the call. In addition, when an event signal according to a call reception is received from the network connection unit 122, the controller proceeds to step 304 and receives a called number received through the R2 signal through the R2 signal processor 121. Receiving the called number receives the called number because the private exchange is generally connected to two or more trunk lines. When the controller 111 receives all the called numbers in step 304, the controller 111 proceeds to step 306 to control the R2 signal processor 121 to request a caller's telephone number through the network connection unit 122 to the counter exchange and wait. The control unit 111 receives the caller's telephone number through the R2 signal processing unit 121 for the signal received from the power exchange in step 308. The controller 111 proceeds to step 310 and compares the contents of the incoming call rejection table stored in the memory 112 with the received caller's telephone number. In step 312, the control unit 111 checks whether the caller's telephone number received in step 308 is the set phone number of the caller ID. The control unit 111 proceeds to step 326 when the caller ID is a set phone number, and proceeds to step 314 when the caller ID is a phone number that is not set.

First, a case in which the caller's phone number received in step 308 is a phone number for which a call rejection is set will be described. When the controller 111 proceeds from step 312 to step 326, the controller 111 controls the tone generator 120 to output a busy signal. The controller 111 proceeds to step 328 and checks whether the opposite line is blocked from the network connection unit 122. If the control unit 111 is disconnected from the opposite line as a result of the inspection, the control unit 111 proceeds to step 324 to block and terminate the connected line. If not, the controller 111 proceeds to step 326.

On the contrary, in step 312 to step 314, the control unit 111 controls the switch unit 113 to switch the signal according to the extension number received by the network connection unit 122 to the DTMF receiver 116 and the station translated by the DTMF receiver 116. Receive a number. In step 316, the controller 111 checks whether the extension subscriber is requested to be busy. The control unit 111 proceeds to step 318 when the status of the extension subscriber is busy in step 316, and proceeds to step 332 when the extension is not busy. In step 332, the controller 111 controls the tone generator 120 to transmit the busy tone to the network connection unit 122. In addition, if the opposite line is blocked as a result of the inspection, the process proceeds to step 324 to block and terminate the connected line. However, if the other line is not blocked, go to step 332.

In addition, in step 316 to step 318, the control unit 111 outputs a ring signal to the extension subscriber and proceeds to step 320 to perform a call mode. The controller 111 performs step 320 and proceeds to step 322 to check whether the call is terminated. If the call is terminated, the controller 111 proceeds to step 324 to block and terminate the connected line. If the call is not terminated, the controller 111 continues the call mode of step 320.

As described above, since the caller's telephone number received by the private exchange can be confirmed by using the R2 signal, a table for rejecting an incoming call is configured at the private exchange to selectively receive the call through comparison with the received caller's telephone number. There is an advantage to this.

Claims (2)

In the method for selectively calling according to the caller in the private exchange, Requesting the caller's telephone number using a predetermined signaling method when the call is received; Receiving the caller's telephone number from the power station and comparing the caller's telephone number registered in the rejection table of the private exchange; The call reject method for a specific number in the private exchange, characterized in that the visitor outputs a busy tone if the phone number is the same as the phone number registered in the call reject table. The method of claim 1, The call reject method for a specific number in a private exchange, characterized in that the predetermined signal method is an Al2 (R2) signal method.