KR0162614B1 - Controlling multi-party phone calls - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

It relates to an exchange device.

2. The technical problem to be solved by the invention

SUMMARY OF THE INVENTION An object of the present invention is to provide a call restriction method that prevents theft by unauthorized users by allowing use when necessary and limiting use when not necessary in the extension of an extension user allowed to use a design line.

3. Summary of the Invention

A call restriction method for restricting calls to unauthorized persons of a design line: A program process for programming the telephone line system whether or not to use the design line for each station, and an external subscriber receives the design line or A selection process of selecting a CO line, an input process of inputting a password of the external subscriber, and determining whether to use the external subscriber's use of the design line, if the key phone system is available, It is characterized by consisting of the connection process.

4. Important uses of the invention

It is suitably used for the exchange device.

Description

Restricting Calls to Non-Designator

1 is a diagram schematically illustrating a connection between a general key phone system and a trunk line.

2A is a diagram showing a progress signal state of designating whether or not to use a design line in accordance with the present invention.

2b is a flow chart in accordance with the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exchange apparatus, and more particularly, to a method for limiting calls to non-designator.

An external (line) user calls a CO line that is set up as a DISA phone line of a key phone system, and then dials a specific extension number to call the key phone system, or selects another CO line of the key phone system again to select a key phone system. If the user who is restricted from using the design function to make the CO / IP call of the intermediate media is used arbitrarily, the user can specify the available user, and then the user's extension number and its extension. You can enter your password to allow your phone system to accept your extension or CO number only if there is no error.

However, this also has no way to prevent the user's extension password from leaking. In order to prevent this, the extension password may be frequently changed, but this may cause inconvenience to the user and may cause a problem in use due to memory loss.

Accordingly, an object of the present invention is to provide a call restriction method that can prevent theft by unauthorized users by allowing use when necessary in the extension of the extension user allowed to use the design of the local line and restricting the use when it is not necessary.

Another object of the present invention is to provide a call restriction method that can selectively allow or disallow according to the instant necessity without changing the extension password for the user.

According to the technical idea of the present invention for achieving the above object, in a call restriction method for limiting calls to unauthorized persons of the design line: a program process for programming the use of the design line in the key phone system for each extension And, a selection process for the external subscriber to receive the design line, selecting the extension or the trunk line, an input process for inputting the password of the external subscriber, and whether the external subscriber uses the design line. If it is determined by the system and can be used, it is characterized in that the connection process of attaching the dial tone of the extension or trunk line.

DETAILED DESCRIPTION Hereinafter, a detailed description of preferred embodiments of the present invention will be described with reference to the accompanying drawings.

It should be noted that like elements and parts in the drawings represent like reference numerals wherever possible.

1 is a diagram illustrating a general key phone system, trunk line, and wiring.

Referring to FIG. 1, the configuration of the key phone system will be described. The central processing unit 10 controls the overall operation of the key phone system 20 and identifies the caller in response to detecting a caller identification data (iD) carrying a ring signal. The data path is controlled to be formed, and the caller ID information is analyzed and processed to display the caller identification data as a characteristic extension. The memory 12 stores the calling party number and the calling party name corresponding to the calling party number, and contains the program initial service data for performing a call and various functions. The trunk line subscriber circuit 18 detects ring signals applied from a plurality of trunk lines 1 to N, forms a trunk line loop by caesaring the trunk line by the control of the central processing unit 10, and is incoming from the trunk line. Interface the signal. The switching circuit 14 switches various tones and data under the control of the CPU 10. The subscriber station circuit 16 supplies the call current of the voice band to the key phones and general telephones of the subscribers 1 to N, and performs the interfacing between the extension phones and the devices.

FIG. 2A is a diagram showing a program progress status displayed on an LCD in a key-phone telephone having an LCD. FIG. 2B is a flowchart showing a call restriction method for a non-designated trunk line user according to the present invention.

Referring to Figures 2a and 2b to explain the present invention, it is necessary to first specify whether or not to use multi-line by extension. That is, it is possible to designate (301) whether to use the design line for each extension by using the programming function of the key phone system. The designation method is to select a specific program code (for example 300) in the programming state that can do system programming that affects the whole system, select the extension to be assigned and enable or disable the extension. Specify (Disable) and leave the programming state.

Referring to FIG. 2A, when the initial state 22 is displayed in the state showing the progress of the LCD display state, the station state 24 is displayed when the station is selected, and the function 26 can be changed. It is supposed to display the case.

Referring back to FIG. 2B, the subscriber 1 has been designated as design disabled by the programming and completes the change of the subscriber 1's individual password from the initial password to eg 3456. In addition, for example, designate 701, which is the CO line of key phones, is completed.

As described above, when the external subscriber (CNC) receives a call to 701 by the pre-programmed keyphone system, the user hears the beep of the telephone system, and then inputs 302 the changed individual password 3456 of the subscriber 1.

The decision on whether to use the design line 303 is applied afterwards. That is, the subscriber 1 is compared and judged on whether to use the extension. You will not be able to call the extension you want.

If the use of the design line for the subscriber 1 is designated as possible, after entering the individual password 3456, the external subscriber hears the extension dial tone 304 and then enters the desired extension number to answer the designated extension subscriber. You can start a call.

As described above, according to the present invention, there is an advantage in that the extension of the extension user who is allowed to use the local line is allowed when necessary and the use is restricted when not required, thereby preventing theft by unauthorized users. In addition, the present invention has the advantage that can be selectively allowed or disallowed according to the instant necessity without changing the extension password for the user, the above-described invention is limited by way of example with reference to the drawings, but the same It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit of the present invention.

Claims (3)

A call restriction method for restricting calls to non-licensed designers of a CO line, comprising: a program process for programming a key phone system to enable or disable the use of the CO line for each extension, and an external subscriber receives the DEC line. A selection process of selecting a CO line, an input process of inputting a password of the external subscriber, and determining whether to use the external subscriber's use of the design line, if the key phone system is available, Call limiting method characterized in that consisting of a connection process. The method of claim 1, wherein the input process and the access process may be performed even if the order is changed. The method of claim 2, wherein the external subscriber is an external trunk line user.