KR960011825B1 - Redialing method for keyphone - Google Patents

Abstract

The method for simplifying the redialing process of key phone comprises the steps of: selecting the redial button; deciding the existing number; deciding the inner line or the local line; storing the number in storing part and accomplishing the call. The method simplifies the redial processing by calling the local line or the inner line at a time.

Description

How to redial a keyphone

1 is a block diagram showing the operation of a conventional key phone.

2 is a flow chart showing the redial according to FIG. 1 step by step.

Figure 3 is a flow chart showing step by step redial of the key phone according to the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to redial of a key phone, and more particularly, to a method for redialing a key phone suitable for easily redialing a key phone.

In this regard, FIG. 1 is a block diagram showing the operation of a conventional key phone, in which the user inputs a signal of the input unit 1 and the input unit 1 for the desired dialing by selectively operating the corresponding key, and has recently called. A control unit 2 for controlling the state of the telephone number and the current key phone, a storage unit 3 connected to the control unit 2 to store a telephone number which has been recently called, and a signal from the control unit 2 And a display section 4 which displays the state of the keyphone so that the user can know the current state of the keyphone.

Referring to FIG. 2, the prior art made as described above is as follows.

First, the user selects a group ship or an extension by operating a corresponding key of the input unit 1, and then selects desired telephone numbers in a predetermined order.

Subsequently, the controller 2 inputs a signal from the input unit 1 to store the current telephone number in the storage unit 3 and applies a signal to the display unit 4 so that the display unit 4 displays the current state of the keyphone. Allows the user to visually know the status of the current keyphone and make a call by the selected phone number.

In addition, when a user selects a red line after selecting a CO line or an extension by operating a corresponding key of the input unit 1, the control unit 2 reads the telephone number used during the previous call from the storage unit 3, Call by that diversion number.

Accordingly, the algorithm of the control unit 2 during redial is shown in FIG. 2.

FIG. 2 is a flowchart illustrating redial according to FIG. 1 step by step.

First, press the corresponding button to select the extension or trunk line to be redialed, and then select the redial button (S1, S2).

Subsequently, the telephone number of the extension or trunk line which was called immediately is restored and the telephone number is dialed accordingly, so that the telephone call is carried out (S3, S4, S5).

However, in such a conventional technique, when redialing is performed, it is inconvenient to select a trunk line or an extension line before selecting a button for redialing.

The present invention has been made in view of the above-mentioned drawbacks of the prior art, and redials a keyphone to store the trunk line or extension selection information and the corresponding telephone number information, and to redial by one key operation. The purpose is to provide a method.

In order to achieve the above object, the present invention provides an input unit for manipulating a user's desired dialing, a control unit for controlling a state of a recent phone number and a current keyphone by inputting a signal of the input unit, and accessing the control unit. And a storage unit for storing a recently called telephone number, and a display unit for inputting a signal from the controller to display the state of the key phone so that the user can know the current state of the key phone.

Hereinafter, described in detail by the accompanying drawings an embodiment of the present invention as follows.

First, since the hardware configuration of the present invention is the same as the conventional first diagram, the hardware description of the present invention will be omitted.

That is, the present invention changes the algorithm of the control unit 2, which is the same as FIG.

3 is a flowchart illustrating step-by-step redial of the key phone according to the present invention.

First, when the redial button is selected to redial, if there is no previously stored CO line information or extension information and corresponding telephone number information, a warning message is output and if there is previously stored CO line information or extension information and corresponding telephone number information, The stored trunk line or station information is read from the storage unit 3 to determine whether the line corresponding to the selected redial is a trunk line or an extension line (S1, S2, S3, S4, and S5).

In this case, the phone number information defined above is the phone number information according to the telephone number that was immediately called.

Subsequently, when the selected redial corresponds to the trunk line, the trunk line is automatically occupied by the trunk line information, and then the trunk line information and the corresponding telephone number information are re-stored in the storage unit 3 and the telephone line according to the trunk line number is dialed. Walk to make a CO line call (S9, S10, S11, S12).

Next, if the redial selected in the step (S1, S2, S3, S4, S5) corresponds to the extension, the station automatically selects the extension by extension information, and stores the extension information and the corresponding telephone number information. Re-save and make an extension call by extension telephone number (S13, S14, S15, S16).

As described above, the present invention changes the algorithm of the control unit 2 to store the current line information or extension information and the corresponding telephone number information for each telephone call together, and after the call ends, Since the user can make a call by a stored CO line or an extension and a telephone number according to the key manipulation, the added value of the key phone is increased, such as making redial easy.

Claims (1)

If the redial button is selected, a warning message is output if there is no saved CO line information or extension information and the corresponding phone number information, and if there is already stored CO line information or extension information and corresponding telephone number information, the existing CO line or extension information is displayed. Reading and determining whether a line corresponding to the selected redial is a trunk line or an extension (S1, S2, S3, S4, S5); If the selected redial corresponds to the CO line, the CO line is automatically occupied by the CO line information, and then the CO line information and the phone number information are re-stored and the call is made according to the CO line number to make a CO line call. Steps S9, S10, S11 and S12; If the redial selected in the step (S1, S2, S3, S4, S5) corresponds to the extension, the extension is automatically selected by the extension information, and then the extension information and the corresponding telephone number information are restored and the extension telephone number is selected. Redialing a key phone, which is performed by sequentially making a telephone call according to an extension call (S13, S14, S15, S16).