KR200212105Y1 - Automatic Call Router with Calling Identity Delivery functions - Google Patents

Abstract

The present invention is designed to automatically send a tone using a prepaid card between a telephone and a general telephone communication network so that the user can make a phone call. By using the liquid crystal display, various functions such as checking incoming calls, checking the balance of prepaid cards and selecting prepaid cards are added.

The present invention connects to a general telephone line and supplies power to a circuit and a switching unit 100, a CID demodulation unit 101 for demodulating caller information transmitted from a telephone exchange station, DTMF transmitted from an exchange of a telecommunications operator Remote DTMF demodulator 104 for receiving, DTMF demodulator 105 for inputting initial operator selection and prepaid card number, etc., DTMF tone generator 106 for transmitting the appropriate DTMF tones, incoming from a general telephone line Ring detector 102 for detecting a ring signal, hook detector 109 for detecting the OFF HOOK state of a general telephone connected to the device, detection unit 107 for detecting a guide message or various tones after being connected to an exchange of a telecommunications carrier , Call Progress Detecter), virtual tone filter 113 generating and filtering virtual tones to an external telephone for stable connection, CID data and various information display for the user's convenience For it consists of a liquid crystal display device 110, a control unit 103, and a memory (112, EEPROM) of a key input unit 111 for retrieval and execution of various kinds of information, various data handling and storage.

Description

Automatic Call Router with Calling Identity Delivery functions}

The present invention relates to an automatic dialing device with a built-in caller ID display function, which is an access number purchased from a provider who sells a prepaid card so that a pre-entered number is automatically sent out without intermediary when calling. It is related with the configured automatic connection dialing apparatus.

In general, an automatic dialing device refers to a telephone bill service system that uses a prepaid card of a telecommunications carrier to reduce the calculated bill in a prepaid manner in a telephone exchange system. To this end, the user purchases a telephone bill prepaid card, and the exchange system of the telecommunication service provider imposes a function that checks the code that allows the use of the prepaid card when calculating the fee, and then deducts the fee from the card. Based on this, the special telecommunications operator recruits members to sell and operate the card.

The subscriber can use the CO line and the general telephone to the device of the present invention, and the specific telephone number of the telecommunications carrier and the code of the prepaid card are automatically sent in advance, and the user's telephone number is sent out later. It is.

In addition, the caller information display function is provided in the area where the service is provided, and the other party's phone number is displayed on the LCD display 111 of the automatic dial device with a ringing sound to block malicious calls. have. The received caller ID data is stored in the internal memory 112 and this data is not erased even if the power is not applied. The stored data can be easily checked by key operation and can be automatically dialed by simply pressing the key once. Such a function can be designated and stored in a number of reserved telecommunications carriers and checked through the keys of the liquid crystal display, and then selectively used.

Through the built-in remote DTMF detection circuit, it was considered to be used for recharging and retrieving card with a separate telecommunication service provider.

In addition, since the CID demodulator 101 capable of receiving 1200 baud rate FSK data modulation signals is built in, it has been considered to enable secure and reliable data communication in the future. Currently, communicating with DTMF tones can be a security problem and can also cause problems in sending and receiving reliable data.

There is a voice detection unit 107 can automatically detect the guidance broadcast and the connection time can be shortened, and the user just inputs the access number and card code of each operator in advance, the basic call preparatory work is terminated.

In addition, there is a virtual tone generation and filter 113, when the user picks up the phone and presses a button, the connection number and the code of the card are sent out immediately to prevent the transmission error from occurring. And press button to send out the access number and card code. At this time, the telephone is not connected to the CO line but virtually hears the dial tone or ringback tone of the CO line and after all DTMF data has been transmitted, the phone is connected to the CO line.

When making a call, when the user picks up the handset, the device detects it and automatically sends a DTMF signal to the access number of the carrier displayed on the LCD. Then, when the user presses the phone number of the other party to make a call, the device detects this signal and holds it in the control unit, and then sends a DTMF signal at a time when the line connection is completed. The time it takes is so short that it is difficult for the user to recognize.

If you receive a call, the phone number of the other party will be displayed on the LCD of the device and the ringer will be ringing. At this time, the user can pick up the handset and make a call.

The purpose of the present invention is to enhance the user's convenience and more various communication services by adding the calling party information display function to the automatic access dialing device which will be supported in general CO lines. It is considered to be able to process the card inquiry and charging with the designated telecommunications carrier by digital modulation instead of processing the DTMF tone without security, and also provides the transmission / reception method to the currently serving DTMF. Unlike the conventional method, when the initial access number and card number are transmitted, the phone is connected to the CO line after all DTMF tones have been transmitted, thereby improving the reliability of the device.

By using the liquid crystal display, the device can provide information for the convenience of the user, such as the current time and date, in addition to the display of the caller information, and makes it possible to search and execute various information by simple key operation.

Therefore, the device transmits the call by the prepaid card code of the telecommunications operator, so that the user can see the reduction of the call charges. It becomes possible.

1 is a connection diagram of a general automatic dial device;

2 is a block diagram showing a structure having a function of an automatic access dial apparatus with a built-in caller information display function according to the present invention;

Figure 3 is a block diagram showing a structure having a function of the automatic access dial telephone with a built-in caller information display function applied to the present invention,

Figure 4 is a flow chart showing the flow of the automatic dial device according to the present invention,

5 is a flow chart showing the flow of the caller information display function according to the present invention,

<Explanation of symbols for main parts of the drawings>

100: power supply and switch unit 101: caller information display demodulation unit

102 ring detection unit 103 control unit

104: remote DTMF detection unit 105: DTMF detection unit

106: DTMF generation unit 107: voice detection unit (Call Progress Tone)

108: general telephone 109: hook detection unit

110: liquid crystal display (LCD) display unit 111: key input unit

112: data storage unit (EEPROM) 113: virtual tone filter

The present invention is constructed as follows. 1) Power supply and switching unit 100 for supplying power and switching of telephone lines, 2) CID demodulator unit 101 for receiving caller information indication and transmitting it to the control unit, 3) Signal when ring is received from trunk line Ring detection unit 102 for transmitting the signal to the control unit, 4) Hook detection unit 109 for detecting the hook-off of the receiver and transmitting it to the control unit, 5) Remote DTMF detection unit 104 for demodulating and transmitting DTMF tones from the operator to the control unit 6) DTMF detector 105 which detects and transmits DTMF tones such as a user's prepaid card input to the controller, 7) DTMF generator 106 which controls DTMF tones on the trunk line and generates tones. Voice detector 107 which detects various tones of call broadcasting and trunk lines and transmits them to the control unit; 9) Liquid crystal display device 110 which receives various data from the control unit and displays them on the liquid crystal display device. ) Phone number or divergence EEPROM 112 for storing information, 11) Key block 111 for proper operation by receiving a user's key input, 11) Control unit 103 for controlling all signal flows of the device and generating various signals 12 Virtual tone filter 113 for generating and filtering virtual tones for reliable connection of the apparatus.

The present invention uses the prepaid card, which is the basic operation of the automatic dial, when the exchange checks the card number, area code, and the input telephone number automatically sent by the user, thereby minimizing the time required for transmission. It raises the reliability of the device by switching the call in a stable line state by generating a virtual tone, and has built-in caller information display function. The convenience of the user is improved by adding a key for.

Claims (2)

This is an automatic dial telephone with caller information display function. It allows you to use prepaid card by connecting with CO line. When you pick up the receiver, it detects a signal and virtually generates dial tone. A telephone that sends a telephone number and then connects the user to the CO line. It is an automatic dialing device with caller information display function, which is configured to connect general telephones to the outside, so that it is possible to use prepaid card after being connected with CO line. At this time, the device automatically sends out the dial-up data and then sends the user input phone number to connect the general telephone line with the trunk line.