KR20000021664A - Method for utilizing central office line using password in exchange system - Google Patents

Abstract

PURPOSE: A method for utilizing a central office line using a password is provided to check a speech state by person by person, by preventing unnecessary calls. CONSTITUTION: A method for utilizing a central office line using a password in an exchange system comprises the steps of: demanding input of a password and a telephone number to a subscriber, when a telephone is off-hook by the predetermined subscriber; deciding whether the password is the same, and dialing the inputted telephone number, when the password is the same; providing a call service to the subscriber; exactly calculating a charge to the subscriber, when the telephone is on-hook by the subscriber after supplying the call service to the subscriber, and performing a database of the calculated charge; and printing/outputting a state according to the call service.

Description

How to use CO line using password in exchange system

The present invention relates to a method of using a trunk line of an exchange system, and more particularly, to a method of restricting and allowing the use of a trunk line using a password.

In general, a switching system such as a private automatic branch exchange (PABX) or a key phone system (Key Phone System) is connected to a predetermined number of trunk lines and is configured to accommodate a fixed capacity of subscribers. At this time, since the number of CO lines is limited, an unspecified number or several companies divide the CO lines and use only designated CO lines. In addition, charges for use of CO lines are also set by designated CO lines.

As described above, the existing system divides the trunk line and uses only the designated trunk line, so that the trunk line cannot be used to the maximum, and the user cannot use the trunk line efficiently because the user occupies only the designated trunk line. . In addition, the use of the CO line causes unnecessary calls, and there is a disadvantage in that the call state cannot be checked for each individual.

Accordingly, an object of the present invention is to provide a method for more efficiently using a trunk line in an exchange system.

It is another object of the present invention to provide a method for preventing unnecessary calls from being made in use of a trunk line in an exchange system.

Still another object of the present invention is to provide a method for checking a call state for each individual when using a CO line in an exchange system.

In order to achieve the above objects, the present invention provides a method for granting a password for each individual subscriber or company, and in such a state, when a subscriber requests a call, the user inputs a password and a telephone number together, and provides a call service only when the passwords match. Suggest. The present invention allows anyone to use the maximum number without restricting the use of the CO line, and also knows the usage status of each subscriber, so that it is possible to settle the sum and to suppress unnecessary calls.

1 is a view showing a general configuration of an exchange system to which the present invention is applied.

2 is a flowchart illustrating a process of restricting a trunk line call using a password according to the present invention;

DETAILED DESCRIPTION A detailed description of preferred embodiments of the present invention will now be described with reference to the accompanying drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, the terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of the user or chip designer, and the definitions should be made based on the contents throughout the present specification.

First, it should be noted that the trunk line use method according to the present invention is handled by an exchange system configured as shown in FIG.

In FIG. 1, the controller 100 controls the overall operation of the system such as controlling call switching and providing various services to a subscriber. Read only memory (ROM) 102 and random access memory (RAM) 103 store programs and initial service data of the controller 100 for performing basic calls and various functions, and are processed by the controller 100. Temporarily save the data. That is, the ROM 102 stores program and service data, and the ROM 103 temporarily stores data generated during program execution. The timer 104 generates time data according to a value set by the controller 100 and outputs the time data to the controller 100. The switching circuit 106 switches various tones and voice data under the control of the controller 100.

The general subscriber circuit 108 supplies a call current to the general telephones A, B, C, D under the control of the control unit 100, and interfaces the signals between the general telephones A, B, C, D and the switching circuit 106. The ring generator 110 generates a ring signal and supplies the ring signal to the subscriber line. The key phone subscriber circuit 112 transmits and receives various data to and from the key phone telephones E, F, G, and H under the control of the control unit 100, and supplies a call current, between the key phone telephones E, F, G, H and the switching circuit 106. Interface the signal. Here, the key phone telephones (E, F, G, H) and the general telephones (A, B, C, D) become extension subscribers. The line connecting the general subscriber circuit 108 and the key subscriber subscriber circuit 112 to the extension subscriber becomes a subscriber line.

The tone generator 114 generates various tone signals under the control of the controller 100 and outputs them to the switching circuit 106. The trunk line circuit 116 forms a trunk line call loop under a control of the central office line under the control of the controller 100, and interfaces signals between the trunk line and the switching circuit 106. Here, the CO line means the line connecting the CO line 116 and the Central Office (C.O.).

The dual tone multi frequency (DTMF) receiver 118 analyzes the DTMF signal input from the switching circuit 106, converts the DTMF signal into digital data, and outputs the digital data to the controller 100. Here, the DTMF signal received by the DTMF receiver 118 through the switching circuit 106 may be a telephone number generated by an external subscriber through a trunk line or a telephone number generated by an extension subscriber. The DTMF transmitter (generator) 120 converts the digital data output from the control unit 100 into a DTMF signal and outputs it to the switching circuit 106.

Components described in FIG. 1 are components that can be found in a general exchange system. However, in the ROM 102, a program according to the processing flow as shown in FIG. 2 is stored. In RAM 103, a unique password assigned to each subscriber or company is registered. The control unit 100 provides the call service by using the trunk line according to the processing flow as shown in FIG. 2, and also calculates a fee for charging according to the call service result. As this processing flow is performed, the present invention enables efficient use of trunk lines, prevents unnecessary calls, and enables checking of individual call states.

2 is a view showing a processing flow that allows or restricts the use of a trunk line according to the present invention. As described above, the processing flow is controlled by the control unit 100 of the exchange system. The present invention is characterized in that the subscriber requests the input of a password when making a call request, and the call service is performed only when the input password matches.

Now, assuming that the subscriber has off-hooked the telephone, the controller 100 checks this in step 201 and requests the subscriber to input a password and telephone number. When the subscriber enters a password and a phone number, the controller 100 inputs a password and a phone number from the subscriber in step 202 and determines whether the password matches in step 203. In this case, if it is determined that the passwords match, the process proceeds to step 204. If it is determined that the passwords do not match, the process proceeds to step 202 after requesting the password input again in step 208.

If it is determined that the password entered by the subscriber is matched, the controller 100 finds an empty trunk line in step 204, and dials the corresponding telephone number through the trunk line if there is an empty trunk line. By such dialing, a call path is formed. In this state, when the subscriber does not on hook the phone, the subscriber is provided with the desired call service. That is, when it is determined in step 205 that the subscriber does not on-hook the telephone, the control unit 100 allows the call service to be performed in step 209.

On the other hand, if it is determined in step 205 that the subscriber who received the call service is on-hook, that is, the subscriber requests termination of the call, the control unit 100 calculates the charge according to the calling region and elapsed time that the subscriber called in step 206. Then, the calculated fee is databased by individual subscribers. In this case, the charge is calculated by multiplying the talk time by using the real time clock (RTC) provided from the timer 104. After the call charge is settled, the control unit 100 prints out the call state for each individual or company in step 207.

As described above, the present invention does not need to limit the use of the CO line because it is possible to manage the use of the CO line for each individual, and there is an advantage that can always induce only necessary calls. In addition, all the CO lines available in the system can be used by anyone, thus bringing the efficiency of work and printing the call status. In addition, since the sum of the individual calls becomes the amount of calls for the company, it is possible to calculate the call rate, thereby making it possible to utilize the largest empty lines without designating the CO line.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the scope of the following claims, but also by the equivalents of the claims.

Claims (4)

In the trunk line use method of the exchange system, A first step of requesting the subscriber to input a password and telephone number when the predetermined subscriber off-hooks the telephone; Judging whether the passwords match, and if it is determined that the passwords match, dialing the input telephone number; And a third process of providing a call service to the subscriber after performing the second process. The method of claim 1, further comprising: a fourth step of calculating a fee to be charged to the subscriber when the subscriber is on-hook after receiving the call service, and databaseting the settled fee. How to. The method of claim 2, further comprising a fifth process of printing and outputting a state according to the call service after performing the fourth process. The method of claim 1, wherein if the input password is determined to be inconsistent in the second step, the method requires re-entering the password.