KR19980031596A - How to Redial Your Phone Automatically - Google Patents

Abstract

end. The technical field to which the invention described in the claims belongs:

The present invention relates to a method for automatic redialing of a telephone.

I. The technical problem the invention is trying to solve:

In a conventional telephone, when calling a communication terminal using a plurality of continuous trunk lines, a redial function was provided only for a telephone number corresponding to a calling trunk line among a plurality of trunk lines, and in order to call another continuous trunk line, a corresponding telephone number was used. You had to dial using the key.

All. The gist of the solution of the invention:

The present invention stores the phone number and the last number if the dialed phone number is busy, and the last phone determined by the last number from the stored phone number until the busy tone is not detected when the user requests to redial automatically. Automatic redialing of telephones that dial sequentially to numbers.

la. Important uses of the invention:

cellphone.

Description

How to Redial Your Phone Automatically

The present invention relates to a telephone number redialing function of a telephone, and more particularly to a method of sequentially redialing consecutive telephone numbers until a call is made when calling a subscriber having consecutive telephone numbers.

Typically, offices using multiple trunk lines use consecutive telephone numbers, and companies using private exchanges often use consecutive extension numbers in departments using multiple extensions.

In the conventional telephone, a function of dialing a registered telephone number using a shortcut key or a one touch key, such as a speed dial function and a one touch dial function, has been provided. In addition, a redial function has been provided for temporarily storing a telephone number last dialed by a user in a buffer and redialing the temporarily stored telephone number when a redialing key is input. In addition, since the redial function is replaced by a previously stored telephone number when the telephone number is dialed, the service is available only for one telephone number.

Therefore, in the conventional telephone, when calling a communication terminal using a plurality of continuous lines or extensions, the redial function was serviced only for the phone number corresponding to the calling line or extension among the plurality of lines or extensions, and the other lines or extensions In order to make a call, there was an inconvenience of having to dial the corresponding telephone number using the numeric keys.

It is therefore an object of the present invention to provide a method for sequentially and repeatedly dialing consecutive telephone numbers until a call is made.

1 is a block diagram of a telephone according to an embodiment of the present invention.

2 is a control flow diagram for automatic redialing according to one embodiment of the invention.

3 is a structural diagram of a temporary buffer according to an embodiment of the present invention.

Hereinafter, with reference to the drawings in accordance with an embodiment of the present invention.

The configuration of the telephone according to an embodiment of the present invention will be described with reference to FIG. 1, and the controller 10 controls the overall operation of the telephone according to the control program stored in the internal ROM 24. A line interface unit (LIU) 12 is controlled by the control unit 10 to connect a telephone line to the call path unit 14 to form a call loop. The communication path unit 14 switches various signals under the control of the control unit 10 and transmits the various signals to the corresponding parts. The handset 16 includes a handset for converting a voice signal generated from a subscriber into an electrical signal, and a handset for converting an electrical signal into a voice signal to generate an audible sound. The tone detector 18 detects various tone signals including busy tone, ring back tone, and the like received through a telephone line and provides the tone detection signal T.D to the controller 10. The dialer 20 dials a telephone number under the control of the control unit 10 according to the key pressed by the user. The ring detection unit 22 is connected to a telephone line, detects an incoming ring received through the telephone line, and provides a ring detection signal R.D to the controller 10. The ROM 24 stores a control program and is accessed by the controller 10. The RAM 26 stores various data required for performing a function provided in the telephone and data generated by performing a function. The key input unit 28 has a key matrix structure including a function key and a numeric key 34 for controlling the operation of the phone, and outputs key data to the controller 10 in response to the input key. The function key includes an automatic redial key 32 according to the present invention. In addition, the key input unit 28 is provided with a display window 30 for displaying the current operating state of the phone.

The automatic redialing operation according to an embodiment of the present invention will be described with reference to FIG. 2, storing a dialed telephone number and receiving and storing a maximum number when a busy tone is received in response to the dialing. If there is a re-dial request, a process of sequentially dialing the stored phone numbers up to the maximum number until the call is made.

The structure of the RAM 22 configured as an area in which a dialed telephone number is stored and an area in which a maximum number is stored according to an embodiment of the present invention are shown in FIG. The maximum number field refers to the end number of the last telephone number of consecutive telephone numbers. For example, if consecutive telephone numbers are 479-5930 to 479-5933 and telephone number 479-5930 is dialed, 4,7,9,5,9,3,0 is stored in the telephone number area, and the maximum number area The last number 3 of 479-5933, the last telephone number of consecutive telephone numbers, is stored.

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

First, when the registration process of the telephone number consisting of steps 210 to 222 will be described, the controller 10 detects a key input from the key input unit 28 in step 210. When the key input in step 210 is detected, the controller 10 proceeds to step 212 and determines whether the input key is a numeric key 34. If it is determined in step 212 that the number key, the control unit 10 proceeds to step 214 to control the dialer 20 according to the input number key 34 to perform a phone number dialing. The telephone number dialed in step 214 is temporarily stored in the telephone number area of the RAM 26 having the structure of FIG. 3 by the controller 10 in step 216. When the dialing is completed, the controller 10 proceeds to step 218 to detect a busy tone received from a private or private exchange (not shown) in response to the dialing. Various tone detections including the busy tone are detected by the tone detector 18 connected in parallel with the handset 16 and provide the tone detection signal TD corresponding to the detected tone signal to the controller 10. By doing so. If the busy tone is not detected in step 218, the controller 10 proceeds to step 238 to perform a normal call function. However, if a busy tone is detected in step 218, the controller 10 proceeds to step 220 and detects whether a maximum number is input. For example, when the control unit 10 detects the maximum number, if the numeric key is continuously input to the special key # key, the controller 10 detects the number corresponding to the input number as the maximum number. . If the input of the maximum number is detected, the controller 10 proceeds to step 222 and temporarily stores the input maximum number in the maximum number area of the RAM 26 having the structure of FIG. 3.

In the above-described process, for example, a continuous telephone number is 479-5930 to 479-5933 and the telephone number 479-5930 is dialed. For example, 4 which is the telephone number dialed in the telephone number area in steps 214 and 216 is used. , 7,9,5,9,3,0 are stored, and 3, which is continuously input to the #key which is a special key in step 220, is stored in the maximum number area.

Next, when the automatic redial process is performed in steps 224 to 236, the control unit 10 proceeds to step 224 when the key input is detected in step 210, which is an automatic redial key 32 requesting automatic redialing. Judge If it is determined that the automatic redial key 32 is input, the controller 10 proceeds to step 226 to redial the telephone number temporarily stored in the telephone number area of the RAM 26 having the structure of FIG. 3. The redialing is performed by the controller 10 controlling the dialer 20 according to the phone number temporarily stored in the RAM 26. When the redialing is completed, the controller 10 proceeds to step 228. In step 228, the controller 10 detects whether a busy tone is received from a local or private exchange (not shown) in response to the dialing performed in step 226. Various tone detections including the busy tone are detected by the tone detector 18 connected in parallel with the handset 16 and provide the tone detection signal TD corresponding to the detected tone signal to the controller 10. By doing so. If the busy tone is not detected in step 228, the controller 10 proceeds to step 238 to perform a normal call function. However, if the busy tone is detected in step 228, the controller 10 proceeds to step 230 and determines whether the maximum number is set in the maximum number area of the RAM 26. If it is determined in step 230 that the maximum number is not set, the redial function ends. However, if it is determined that the maximum number is set, the controller 10 proceeds to step 232 to dial the next telephone number. The next telephone number dialing is performed by dialing a telephone number which is increased by one the last number of the last dialed telephone number. For example, if the last dialed telephone number is 479-5931, the dialed telephone number is 479-5932 in step 232. When the dialing of the next telephone number is completed in step 232, the controller 10 proceeds to step 234. When the controller 10 proceeds to step 234, the controller 10 detects whether a busy tone is received from a private or private exchange (not shown) in response to the dialing performed in the step 232. Since the detection of the busy tone is the same as the process of step 228, description thereof is omitted. If the busy tone is not detected in step 234, the controller 10 proceeds to step 238 to perform a normal call function. However, if the busy tone is detected in step 234, the controller 10 proceeds to step 236 and determines whether the dialed phone number is the last phone number in step 232. The determination of the last telephone number can be found by comparing whether the end number of the telephone number dialed in step 232 matches the maximum number stored in the maximum number area of the RAM 26. For example, if the last dialed telephone number is 479-5933 and the maximum number is 3, it is determined in step 236 as the last telephone number. If it is determined in step 236 that the last phone number is returned to step 226, the phone number temporarily stored in the phone number area of the RAM 26 is redialed. However, if it is determined in step 236 that it is not the last phone number, the method returns to step 232 to dial the next phone number.

As described above, the present invention has the convenience of making a quick call with one dialing when making a phone call to an office using a continuous telephone number.

Claims (7)

A method for implementing automatic redialing of a telephone having a tone detector for detecting a busy tone received in response to dialing from an exchange, the method comprising: If the dialed telephone number is busy, the telephone number and the final number are stored and sequentially from the stored telephone number to the last telephone number determined by the final number until the busy tone is not detected when the user requests automatic redial. Automatic dialing method for a telephone, characterized in that the dialing. The method of claim 1, The last phone number is the end number of the stored phone number is the same as the last number, the remaining phone number is a phone number, characterized in that the same phone number as the stored phone number. The method of claim 2, If the call is not formed by the dialing of the last phone number, the automatic redialing method of the telephone, characterized in that to redial from the stored phone number. A method for implementing automatic redialing of a telephone having a tone detector for detecting a tone received in response to dialing from an exchange, the method comprising: A storing step of storing a dialed telephone number and receiving and storing a final number when a busy tone is detected in response to the dialing; The automatic redialing method of the telephone, characterized in that the automatic dialing process sequentially dials the stored telephone number from the stored telephone number to the last telephone number determined by the last number whenever a busy tone is detected. The method of claim 4, wherein in the automatic dialing process, And a telephone number dialed by the busy tone detection is a telephone number whose end number is increased by one than the telephone number in the busy state. The method of claim 5, The last phone number is the end number of the stored phone number is the same as the last number, the remaining phone number is a phone number, characterized in that the same phone number as the stored phone number. The method of claim 6, If the call is not formed by the dialing of the last phone number, the automatic redialing method of the telephone, characterized in that to redial from the stored phone number.