KR0154460B1 - Method of display of extension number of other busy keyphone - Google Patents

Abstract

The present invention relates to a method of displaying an extension number of another key phone telephone in a call. When any one of a plurality of key phone telephones sharing one trunk line is using the trunk line, a lamp attached to the trunk line button of the other key phone telephone is turned on. When the user presses a CO line button in which the lamp is turned on, the extension number of the other phone phone using the CO line corresponding to the CO line button is displayed, so that the user of the phone phone currently using the CO line The numbers are easy to see.

Description

How to display the extension number of another keypad phone in a call

1 is a schematic block diagram of a key-phone telephone capable of displaying the extension number of another key-phone telephone in a call according to the present invention.

2 is a flowchart showing an operation of displaying an extension number of another key-phone telephone in a call according to a preferred embodiment of the present invention.

3 is a block diagram of a key phone telephone system for performing the extension number display method of another key phone telephone in accordance with the present invention.

* Explanation of symbols for main parts of the drawings

10: keypad 20: memory

30: timer 40: micom

50: LCD

The present invention relates to a keyphone telephone, in which one of the keyphone telephones sharing a trunk line is busy, the extension number of the keyphone telephone being talked to is displayed on another keyphone telephone other than the busy telephone line. The present invention relates to a method for displaying an extension number of a keypad phone.

In general, a key-phone telephone system is composed of a key system and a plurality of key-phone telephones, and can be used by connecting a plurality of extension lines to a plurality of trunk lines. When a call is received from the outside through one trunk line, the trunk line The user can answer an incoming call by using any of the key phone telephones that share the key phone.

At this time, when a user receives a call from the outside using any one of the plurality of key phone phones sharing one trunk line, a lamp mounted on the trunk line button of the other key phone telephone sharing one trunk line turns on. The state line is changed to indicate that the CO line is busy.

For example, a trunk line 100, a trunk line 200, and a trunk line 300 are connected to a key phone with the extension A, and a trunk line 100, a trunk line 200, and a trunk line 400 are connected to a key phone with the extension B, and the extension number is C. When the CO line 100, CO line 500, or CO line 600 is connected to the in-keyphone phone, and the user receives a call to the CO line 100 by using a key phone with the extension C, when the call is made from the outside, The lamp of the trunk line button corresponding to the trunk line 100 mounted on the keypad phone with the extension A and the keypad phone with the extension B is turned on.

However, when a time call is scheduled to make an important call to the current CO line, there is a problem that it is difficult to request a call cut because it is impossible to know which key-phone telephone is currently using the CO line.

Accordingly, the present invention has been made in view of the above-described problems, and provides a method for displaying the extension number of another keyphone telephone in a call that can display the extension number of another keyphone telephone in a call when the user presses a call button. Its purpose is to.

In order to achieve the above object, the present invention comprises a key system and a plurality of key phone telephones, and a fraudulent key system connects a plurality of trunk lines and the plurality of key phone telephones in a many-to-many manner, and each of the plurality of key phone telephones includes: The CO line button is attached to the display device and the plurality of CO lines connected by the key system in a one-to-one correspondence, and when any one of the key phone telephones sharing one CO line is busy, another key phone telephone in a call A method of displaying an extension number of another key phone telephone in a call using a key phone telephone system in which a lamp of a CO line button attached to the button is turned on: when the CO line button on which the lamp is turned on is pressed by a user's operation, the CO line button is pressed. The first key phone corresponds to the CO line button with the lamp on the key system. Transmitting a signal requesting an extension number of a second key-phone telephone occupying a trunk line; The key system, when a request signal is input from the first key phone, searching for an extension number of the second key phone and transmitting the same to the first key phone; And receiving the extension number of the second key phone telephone occupying the trunk line and displaying the extension number of the second key phone telephone for a predetermined time through the display device. It provides a method for displaying the extension number of another key phone telephone in a call.

Other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings by those skilled in the art.

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

3 is a block diagram of a key-phone telephone system for performing the extension number display method of another key-phone telephone in a call of the present invention. 3 illustrates a keyphone telephone system for connecting two trunk lines to four keyphone telephones.

In FIG. 3, the key system 400 connects trunk line A to the first key phone telephone 400A, the second key phone telephone 400B, and the third key phone telephone 400C, and connects the trunk line B to the second key phone telephone 400B. ), The third key phone telephone 400C, and the fourth key phone telephone 400D.

In addition, each of the first to fourth key phone telephones 400A to 400D includes the keypad 10, the memory 20, the timer 30, the microcomputer 40, and the LCD 50, as shown in FIG. CRYSTAL DISPLAY (hereinafter abbreviated as LCD).

The keypad 10 of each of the first to fourth keypad telephones 400A to 400D is adapted to have a one-to-one correspondence with a plurality of connectable trunk lines, and a lamp is provided for each trunk line button corresponding to the plurality of accessible trunk lines. Is mounted.

For example, a trunk line button corresponding to a trunk line A is employed in the first key phone 400A, and a trunk line button corresponding to the trunk line A and a trunk line B correspond to the second trunk phone 400B and the third keypad phone 400C. Corresponding trunk lines buttons are employed, respectively, and the trunk line buttons corresponding to the B trunk lines are employed in the fourth key phone 400D.

On the other hand, for example, when the first key phone 400A is busy, the lamp of the CO line button corresponding to the A line of the second key phone 400B and the A line of the third key phone 400C may be used. The CO line button lamp is turned on.

In addition, when the user presses the lamp of the CO line button corresponding to the A trunk line of the third keypad phone 400C while the first keypad phone 400A is in a call, the keypad 10 of the third keypad phone 400C is A. A command signal is provided to the microcomputer 40 for searching for a keyphone telephone currently in a call among other keyphone telephones sharing the trunk line, that is, the first keyphone telephone 400A and the second keyphone telephone 400B.

When the command signal is input from the keypad 10, the microcomputer 40 of the third key phone 400C transmits a signal to the key system 400 for requesting the extension number of the key phone currently occupying the A-line. In response, the key system 400 provides the microcomputer 40 of the third key phone 400C with data indicating the extension number of the first key phone 400A in which the call is currently occupied by occupying the A-line.

Accordingly, the microcomputer 40 of the third key phone 400C receives data indicating the extension number of the first key phone 400A from the key system 400 and stores the data in the memory 20 after receiving the data indicating the extension number of the first key phone 400A. ) Is initialized and a control signal for displaying the extension number of the first keypad phone 400A is generated and provided to the LCD 50. On the basis of the display control signal provided from the microcomputer 40, the LCD 50 displays the extension number of the first keypad telephone 400A in which the call is in progress, by occupying the A-line, in liquid crystal form.

Therefore, the user of the third key phone 400C will be able to know that the current A trunk line is currently used by the first key phone 400A.

And, in Figure 1, the memory 20 stores the time required to display the extension number of the other phone phone currently in talks on the liquid crystal, and the timer 30 is another key phone phone currently in the call on the LCD (50) It is for checking the time required to display the extension number in the liquid crystal, and is responsible for the function of counting the liquid crystal display time and providing it to the microcomputer 40.

2 is a flowchart showing an operation of displaying an extension number of another key-phone telephone in a call according to a preferred embodiment of the present invention, in which the present invention is shown in FIG. 1, FIG. 2, and FIG. It will be described in more detail with reference to.

First, for example, if the first key phone 400A occupies the A-line, and the call is in progress, the key system 400 grasps such a state and the second key-phone telephone 200B sharing the A-line. The third key phone 400C provides a signal indicating that the A-line line is in use.

The microcomputer 40 of the second key phone 200B and the third key phone 400C receives a signal indicating that the A line is in use from the key system 400, and then connects to the A line mounted on each keypad 10. The lamp of the corresponding trunk line button is controlled to be turned on.

Therefore, the lamps of the CO line button corresponding to the A line of the second key phone 400B and the third key phone 400C are turned on, respectively.

In this state, when the user of the third key phone 400C presses the CO line button corresponding to the A trunk line, the corresponding CO line button is another key phone telephone sharing the A trunk line, that is, the first key phone 400A and the second key phone. A command signal is provided to the microcomputer 40 to search for which key phone telephone in the telephone 400B is currently busy.

The microcomputer 40 checks the trunk line button corresponding to the trunk line A of the keypad 10, and when a command signal is input from the trunk line button corresponding to the trunk line A (step 210), the microcomputer 40 occupies the current trunk line A in the key system 400. The key system 400 transmits a signal for requesting the extension number of the key phone telephone being used, and in response, the key system 400 acquires data indicating the extension number of the first key phone telephone 400A in which the call is in progress by currently occupying the A-line. The microcomputer 40 of the telephone 400C is provided.

When the microcomputer 40 of the third key phone 400C receives the data indicating the extension number of the first key phone 400A from the key system 400 (step 220), the microcomputer 40 stores the data in the memory 20. A control signal for initializing the timer 30 is generated.

Accordingly, the extension number of the first key phone 400A is stored in the memory 20 (step 220), and the timer 30 counts the next time initialized based on the control signal for initialization from the microcomputer 40. do.

Next, the microcomputer 40 generates a control signal on the LCD 50 so that the extension number of the first key phone 400A stored in the memory 20 can be displayed, and accordingly, the first key phone 400A is displayed. The extension number of is displayed on the LCD 50 (step 230).

On the other hand, the microcomputer 40 compares the time counted from the timer 30 with a predetermined time stored in the memory 20, step 240, the time counted from the timer 30 is stored in the memory 20 When a predetermined time is reached, a control signal for turning off the extension number of the currently connected keypad phone displayed on the LCD 50 is turned off.

Therefore, based on the control signal for switching off from the microcomputer 40, the extension number of the keypad telephone currently in communication is not displayed.

As described above, according to the present invention, if one keyphone telephone occupies the trunk line, and the call is in progress, among the plurality of key telephone telephones sharing one trunk line, the telephone number of the current telephone key telephone telephone is transferred to the other keyphone telephone. There is an advantage to know.

Claims (1)

A key system and a plurality of key phone telephones, the key system connects a plurality of trunk lines and the plurality of key phone saving devices in a many-to-many manner, and each of the plurality of key phone telephones is provided with a display device and the key system. The CO line button is installed in a one-to-one correspondence with a plurality of CO lines connected, and when any one of the key phone telephones sharing one CO line is busy, the CO line button lamps mounted on other non-call key phones are busy. A method for displaying an extension number of another key phone telephone in a call using a key phone telephone system that is turned on: When the CO line button on which the lamp is turned on is pressed by a user's operation, the first key telephone telephone in which the CO line button is pressed is the key system. Of the second key phone which occupies the trunk line corresponding to the trunk line button on which the lamp is turned on. Sending a signal requesting the line number; When the request signal is input from the first key phone, the key system extracts the extension number of the second key phone and transmits the same to the first key phone; And receiving the extension number of the second key phone telephone occupying the trunk line and displaying the extension number of the second key phone telephone for a predetermined time through the display device. How to display extension number of key phone.