KR960009921B1 - Extension calling method for a keyphone system - Google Patents

Abstract

(1) displaying an extension number and status on the LCD of a key phone when the extension mode is selected; (2) displaying unit extension numbers and extension subscribers on the LCD when the unit extension numbers are selected; and (3) calling one of the unit extension numbers displayed on the LCD. The method provides easy calling of all extension number without equipping the buttons to set the numbers.

Description

Extension Calling Method of Key Phone System

1 is a configuration of a conventional key phone system.

2 is a flowchart illustrating an extension process of a conventional key phone system.

3 is an external view of a key-phone telephone for applying the present invention.

4 is a diagram for explaining an extension call of a key phone system according to the present invention.

5 is a flowchart illustrating an extension call process of a key phone system according to the present invention.

* Explanation of symbols for main parts of the drawings

10: phone phone 11, 21: CPU

12,22: datacom circuit 13: call circuit

14,24: station interface circuit 15: LCD display circuit

16: button detection circuit 20: key phone main device

23: currency matrix 25: trunk line interface circuit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key phone system, and more particularly, to a method for calling an extension of a key phone system, which enables the user to check an extension call state through a liquid crystal display (LCD) of a key phone and to select and call an extension displayed on the key phone LCD. .

The conventional key phone system comprises a key phone main unit 20 of the key phone telephone 10 as shown in FIG. The key phone telephone 10 transmits / receives data under the control of the CPU 11, the call circuit 13 for transmitting and receiving voice signals under the control of the CPU 11, and the CPU 11 for controlling the overall operation of the key phone. A datacom circuit 12, a button sensing circuit 16 for sensing input of various buttons and supplying corresponding information to the datacom circuit 12, an internal interface circuit 14 for matching with the key phone main device 20, and And an LCD display circuit 15 for displaying various kinds of information on the LCD. The key phone main unit 20 switches the call path under the control of the CPU 21 which controls the overall operation of the key phone main unit, the datacom circuit 22 which transmits and receives data under the control of the CPU 21, and the CPU 21. And a trunk line interface circuit 25 for matching with the trunk line.

When an extension call is made using such a keyphone system, the extension call is made through the process shown in FIG. When an extension call is made during key phone system operation, when the extension call information is input using a predetermined button of the key phone telephone 10, the extension call information is sensed by the button detection circuit 16, and the datacom circuit 12 and the extension interface are input. The circuit 14 is transmitted to the CPU 21 of the key phone main unit via the circuit 14, the station interface circuit 24, and the datacom circuit 12, and the CPU 21 transmits the call path matrix 23 when the called station is not busy. ) To make a call by connecting a calling extension to a called extension. At this time, if you want to directly call the extension set the extension number to each of the predetermined button of the key phone telephone 10 and call the desired extension by using the button set the desired extension number, if the call is not a direct extension The extension number to be called was dialed to speak with the extension.

In the conventional direct extension method as described above, since the extension number must be set to a predetermined predetermined button, a keyphone system having a large number of extensions has a problem of providing a button for setting the extension number as much as the player.

The present invention has been made in order to solve the problems described above, the key phone to check the call status of each extension through the LCD of the keypad phone and to call all the extensions by selecting the extension displayed on the keypad LCD phone The purpose is to provide a system call method.

In order to achieve the above object, the present invention provides a first range of displaying an extension number and extension state of a predetermined range on an LCD of a keypad phone, and after the first step is performed, an extension of a predetermined range displayed on the LCD. Selecting a unit extension number from among the numbers, a second step of displaying a unit extension number and an extension subscriber on the LCD; and performing a second step of selecting and calling one extension number among the unit extension numbers displayed on the LCD after performing the second step. Characterized in that it comprises a step.

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

The present invention can be applied to the key phone system as shown in FIG. 1, the key phone telephone 10 is a handset 31, a dial button (DB), a function selection button (FS) as shown in FIG. And an LCD 32, buttons B1 to B10, a menu button M1, a page up button PU1 and a page down button PD1 in addition to the CO line selection button LS. do.

The present invention calls extensions in the order shown in FIG. When the user wants to call the extension after the extension of the key phone system, the user enters the menu button M1 and selects the extension mode. The information is detected by the button detection circuit 16 and the datacom circuit 12, the extension. It is transmitted to the CPU 21 of the key phone main device 20 via the interface circuit 14, the station interface circuit 24, and the data comb circuit 22. At this time, the CPU 21 of the keypad main unit 20 detects the extension mode and displays the extension number and the extension state of the predetermined range in the form as shown in FIG. 4A on the LCD 32 of the keypad phone 10. . In (A) of FIG. 4, five squares are displayed after the extension number to express the state of the extension in five units. For example, five squares after the number 100 indicate extensions from extensions 100 to 104, five squares after the number 105 indicate extensions from extensions 105 to 109, and call extensions The squares in are shown in black. After the extension status is displayed on the LCD 32 as shown in FIG. 4A, the user selects and inputs buttons B1 to B10 corresponding to the extension number to which the user wants to call. In the case of inputting the button (B1) or (B6), if you want to call the extension 140, enter the button (B5) or (B10). When the button B1 or B6 is input, the unit 32 subscribers of the extension numbers 100 to 109 are displayed on the LCD 32 as shown in FIG. 4B. At this time, when the user inputs the button B2, the extension 101 is called, and when the user enters the button B9, the extension 108 is called. In this way, the desired extension is called and the call is connected to the corresponding extension. In addition, when calling an extension without confirming the extension, the call is directly made by calling the corresponding extension number using the dial button DB.

As described above, the present invention checks the call status of each extension through the LCD of the keypad phone, and calls by selecting the extension displayed on the LCD of the keypad phone, in the case of a keyphone system accommodating a large number of extension subscribers to set the extension number Even if it is not equipped with a button for the player, all the stations can be easily called.

Claims (3)

In an extension call method of a keyphone system, when the extension mode is selected, the first step of displaying the extension number and extension state of a predetermined range on the LCD of the keyphone telephone; and after performing the first step, from among the extension numbers displayed on the LCD. Selecting a unit extension number, a second step of displaying a unit extension number and an extension subscriber on the LCD; and performing a second step of selecting and calling one extension number among the unit extension numbers displayed on the LCD after performing the second step. Extension call method of a key phone system comprising a. The keyphone according to claim 1, wherein when the unit extension number is selected among the extension numbers of the predetermined range displayed on the LCD, the keyphone is selected by using a predetermined button provided on the left and right sides of the LCD at a position corresponding to the displayed unit extension number. How to call your system. The keyphone according to claim 1, wherein when an extension number of the unit extension numbers displayed on the LCD is selected and called, the keyphone is selected using a predetermined button provided on the left and right sides of the LCD at a position corresponding to the displayed extension number. How to call your system.