KR19990001890A - How to redial the caller identification information in the phone system - Google Patents

Abstract

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

The present invention relates to a method of redialing a telephone number of caller identification information in a key phone system.

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

The present invention provides a method for redialing a phone number of caller identification information in a key phone system.

All. Summary of Solution of the Invention

In a method of redialing a telephone number of caller identification information in a key phone system having a memory storing caller identification information, it is checked whether a call log key is input from an extension subscriber terminal, and when the call log key is input, the first incoming call is received. A first step of displaying caller information and dials for a call, next, exit, and a second step of searching for caller information by checking whether the volume up key and the volume down key have been entered; And a third step of dialing the telephone number of the displayed caller information.

la. Important uses of the invention

It is used to redial the caller identification information in the phone system.

Description

How to redial the caller identification information in the phone system

The present invention relates to caller identification information of a key phone system, and more particularly, to a method of checking a phone number of caller identification information and redialing the confirmed phone number.

In general, a key phone system transmits caller identification data to a terminal to identify the other party when a ring is received and displays it on the display device.The caller identification data includes a phone number, name, time, and time. It is to be sent in the rest period between ring signals.

Therefore, when there is a call, the caller identification information signal provided from the key phone system is input to check the caller's telephone number. The telephone terminal having the function of confirming the caller identification information may check the caller's information through a display unit such as an LCD of the caller's telephone number. Similarly, for the abandoned call, the called party number may be stored and displayed on the display device. The caller identification information as described above may be output to the printer and checked.

However, as described above, after confirming the information displayed on the display device or the printed information and confirming the telephone number, there is an inconvenient problem of releasing the caller identification information mode and dialing the confirmed telephone number.

Accordingly, an object of the present invention is to provide a method of redialing a caller identification information by a phone number in a key phone system which simultaneously checks caller identification information displayed on the display device and redials.

1 is a block diagram of a key phone system according to the present invention;

2 is a flowchart illustrating a method of redialing a telephone number of caller identification information in a key phone system according to the present invention;

3 is a memory map showing storing caller identification information in a key phone system according to the present invention;

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals have the same reference numerals as much as possible even if displayed on different drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a block diagram of a key phone system according to the present invention.

Referring to Figure 1 below, the central processing unit 10 controls the overall operation of the key phone system. And by detecting the caller identification data (ID) carried in the ring signal to control the caller identification data path is formed, and displays the caller identification data. The memory 20 stores the received calling party number and embeds the program initial service data for performing a call and various functions. The trunk line subscriber circuit 30 detects ring signals applied from a plurality of trunk lines 1 to trunk lines N, forms a trunk line loop by caesaring the trunk lines by the control of the central processing unit 10, and incoming from trunk lines. Interface the signal. The caller ID receiver 30 receives the caller ID which is asynchronous serial data to which start and stop bits are added during the rest period of the ring signal by the control of the CPU 10 when detecting a ring signal received from the trunk line. Output The switching circuit 50 switches various tones and data under the control of the CPU 10. The subscriber station circuit 20 supplies voice call currents to key phones and general telephones of the subscribers, and performs interfacing between the extension telephones and the devices. The terminal subscriber circuit 20 of the plurality of extension subscribers is connected to the extension subscriber circuit 20. The subscriber station 70 has a plurality of numeric keys, dial keys, next keys, EXIT (exit) keys, volume up and down keys, and a CALL LOG key.

2 is a flowchart of redialing a phone number of caller identification information in a key phone system according to the present invention, and FIG. 3 is a memory map showing storage of caller identification information according to the present invention.

Hereinafter, a method of redialing a call number of caller identification information in a key phone system will be described with reference to FIGS. 1, 2, and 3. First, in step 201, the central processing unit 10 uses an internal subscriber circuit 60. Investigate whether a call log key is input from the subscriber station 70. When the call log key is input, the CPU 10 receives the first incoming call, that is, the first call of FIG. The first caller information stored in address 1 is displayed through the display unit of the extension subscriber terminal 70. After displaying the caller information, in step 203, the central processing unit 10 transmits the volume up key to the extension through the extension subscriber circuit 60. If the volume up key is input, the central processing unit 10 displays previous caller information, and if there is no previous caller information, the nth caller information, which is the last address, is input. If the volume down key and the NEXT key are input in step 205 instead of step 203, the second caller information of the second address, which is the next caller information, is displayed in step 206. After displaying caller information in steps 204 and 206, step 207 is displayed. In the step, the central processing unit 10 checks whether the dial key is input from the subscriber station terminal 70. If the dial key is input, the central processing unit 10 dials the displayed telephone number in step 208. If no dial key is input, the central processing unit 10 checks whether the EXIT key has been entered in step 209. If the EXIT key has been input, the central processing unit 10 terminates the process, and if not, proceeds to step 203. Go back and repeat the process described above.

As described above, the present invention is convenient because the user does not need to memorize the phone number and redial because the telephone number of the caller identification information is displayed on the display device of the subscriber subscriber terminal and can be dialed.

Claims (2)

A method for redialing a telephone number of caller identification information in a key phone system having a memory storing caller identification information, A first step of checking whether a call log key has been entered from an extension subscriber terminal, and if the call log key is input, displaying caller information and dials for the first incoming call, and next, exit; A second step of finding caller information by checking whether a volume up key and a volume down key are entered; If the caller information to be found is found, a third step of checking whether a dial key is input and dialing the displayed phone number of the caller information is performed. The method of claim 1, The method further comprises a fourth process of terminating when the Nagam key is input in the third process and repeating the second process if it is not input.