KR100219652B1 - Apparatus and method for transmitting/receiving a call in the internet connection mode - Google Patents

Abstract

The present invention relates to a telephone transmission / reception apparatus and method in an internet access mode for performing voice telephony communication over a line that is connected to the Internet.

The telephone transmission apparatus in the Internet access mode according to the present invention connects the line of T1 to the first output terminal when the user A terminal is connected to the Internet server, and otherwise removes the line of the telephone T1. Switching means for connecting to two output terminals, a modem connected to said first output terminal for performing modulation and demodulation to transmit a signal to a telephone line, and connected to said second output terminal for a predetermined tone at hook on / off Transmission signal processing means for generating a first data corresponding to the input telephone number, connected to said second output terminal, and for generating packet data by modulating a voice signal upon connection to a counterpart telephone call; Transmission data processing means, control means incorporating a program for connecting the user A terminal to the Internet server; And a transmission gateway for requesting a call to the exchange for a telephone number corresponding to the first data, and for generating a voice signal by demodulating the packet data input when connecting to the telephone T2. .

Advantageous Effects According to the present invention, there is an effect of maximizing inefficiency and line utilization rate due to the additional use of a line as compared to the related art.

Description

Telephone transmission / reception device in internet access mode and method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication method and apparatus using the Internet, and more particularly, to an apparatus and method for telephone transmission / reception in an Internet access mode for performing voice telephony communication over a line that is connected to the Internet.

In order to provide Internet service, a user can access an Internet service provider (ISP) using a Point-to-Point Protocol (PPP), a modem and software for accessing the Internet. You must be assigned an address and become a member of the Internet. After registering with the Internet terminal in this manner, the Internet service can be used through the World Wide Web (WWW) browser. You can also make voice calls over the Internet with other users on the Internet using the same software, such as Vocaltech's Internet phones. Where appropriate modem speeds (18.8 Kbps or higher) and adequate Internet bandwidth services are guaranteed, voice calls and data services (WWW, file transfer, etc.) using the above-described software for Internet phones can be used simultaneously. The following components are required.

That is, Intel 80486 or higher PCs, modems, sound cards, microphones, speakers, operating systems such as Windows 95, PPP, and Transmission Control Protocol / Internet Protocol (TCP / IP) and Web browsers. Web Browser), software for Internet phones, etc. are required.

Looking at the operation of the prior art by the above configuration as follows.

First of all, in order to access the Internet, the user's PC tries to connect to the ISP's terminal server by running a modem. When the connection with the server's modem is complete and data can be exchanged, PPP is activated to obtain an IP address from the server. As soon as the IP address is assigned, TCP / IP is ready to run and various programs for the Internet can be run to connect with hosts (computers connected to the Internet) on the Internet. At this time, in order to receive WWW service, a web browser such as Netscape Nevigater and Microsoft Internet Explorer is started and connected to a desired web server to receive a desired document. At this time, the protocol used is HTTH (Hyper Text Transfer Protocol), and may receive pictures, text, and various multimedia. At this time, to make a voice call, start an Internet phone program such as a VocalTec Internet phone and attempt to connect to a user who is currently connected to the Internet and is running the same program so that the call can be divided when the other party answers. do.

According to the conventional technology as described above, a voice call can be made when accessing the Internet, but firstly, the other party to be called must always exist on the Internet, and secondly, the same software for the Internet phone must be running. There was a problem that only a very limited use could not receive a call through.

Of course, in order to fundamentally solve this inconvenience, there is a method of joining a telephone line into two lines and using one line as an exclusive line for internet access and the other line as a dedicated voice service. This adds to the economic burden, and of course causes a problem of lowering the overall line utilization.

The first, second, third, and fourth technical problem to be solved by the present invention is to solve the above-mentioned problems. And providing a method.

1 is a block diagram of a telephone transmission / reception apparatus in the Internet access mode according to the present invention.

2 is a flowchart of a telephone transmission method in an internet access mode according to the present invention.

3 is a detailed flowchart of the call execution step shown in FIGS. 2 and 4.

4 is a flowchart illustrating a call reception method in an internet access mode according to the present invention.

In order to achieve the first technical problem, the apparatus for transmitting a telephone in the Internet access mode according to the present invention is connected to a telephone T2 of an external user B through an internet server and an exchange with the telephone T1 of a line where the user A is connected to the Internet. A communication apparatus capable of making a call, wherein the terminal of user A is connected to a first output terminal when the terminal of user A is connected to an Internet server, and otherwise, the line of the telephone T1 is connected to a second output terminal. Switching means for connecting to a modem, the modem being connected to a first output terminal of the switching means for performing modulation and demodulation for transmitting signals to a telephone line, and connected to a second output terminal of the switching means, upon hook on / off A sound for generating a predetermined tone and generating first data corresponding to a telephone number input by a user Transmission data processing means connected to a signal processing means, a second output terminal of the switching means, for generating packet data by modulating a voice signal upon connection to a counterpart telephone call, connecting the user A terminal to the Internet server; Requesting a call to the exchange for a telephone number corresponding to the first data received by the Internet server and a control means having a program to make a call, and demodulating the packet data input when connecting to the telephone T2. Characterized in that it comprises a transmission gateway for generating a.

In order to achieve the second technical problem, the telephone receiver in the Internet access mode according to the present invention is a user B who has requested a call from the outside through an exchange having an internet server and a call forwarding function to the telephone T1 of a line to which the user is connected to the Internet. A communication device for connecting to a telephone T2 of a telephone and making a general telephone call, wherein the communication device is connected to the switchboard, and finds a number corresponding to the call forwarding number when the line requesting the call is busy and is connected to an Internet server. A reception gateway for generating a request signal and generating packet data modulated with an input voice signal when the telephone connection with the user A is completed, and receiving a call request signal and generating a predetermined beep for informing a call reception request; Receiving signal processing means, and the user A terminal It characterized in that it comprises a received data processing means for generating a sound signal after demodulation by receiving a program control unit and the packet data embedded for connecting the Internet server group.

In order to achieve the third technical problem, a telephone transmission method in an Internet access mode according to the present invention is connected to a telephone T2 of an external user B through an Internet server and an exchange by a telephone T1 of a line to which the user A is connected to the Internet. A communication method for enabling a call, comprising: a dial tone generating step for generating a predetermined dial tone when the telephone T1 of the line being connected to the Internet is hooked off, and a predetermined telephone to which a user A wants to talk after generating the predetermined dial tone A data generation step for generating data corresponding to the number, a data transmission step for transmitting the data of the data generation step to a gateway through an internet server, and a connection with the telephone T2 line corresponding to the data transmitted to the gateway; Call request step to request at the exchange A transmission step for transmitting a voice signal generated at the telephone T1 and the telephone T2 to a counterpart telephone line when the telephone T1 line and the telephone T2 line are connected by telephone through the exchange, and the telephone T1 or the telephone T2 of the telephone line. It is characterized in that it comprises a termination step to terminate the connection with the gateway by detecting that the hook is on.

In order to achieve the fourth technical problem, the telephone transmission method in the Internet access mode according to the present invention is a user B that requests a call from the outside through an exchange having an internet server and a call forwarding function to the telephone T1 of the line to which the Internet is connected. A communication method for enabling a general telephone call by connecting to a telephone T2 of the telephone service, the method comprising: forwarding a call forwarding to a gateway of an Internet service provider when the telephone T1 line receiving the call is detected to be busy. A call forwarding step of transmitting a signal, a search step of searching for an Internet accessor having a telephone number corresponding to the signal received by the gateway of the call forwarding step, and a connection corresponding to a user number of an Internet accessor found in the search step Connection request sending request signal A reception tone generation step of generating a predetermined reception sound when the connection request signal is input to the terminal of the user A; and a voice signal of the telephone T1 and the telephone T2 when the call connection is made in response to the connection request signal. And a termination step for releasing a connection to the gateway by detecting a transmission step for transmitting to the gateway and detecting that the hook of T1 or T2 is turned on.

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

1 is a block diagram of an apparatus for transmitting / receiving a telephone in an Internet access mode according to the present invention, wherein the user terminal block 10 simultaneously provides Internet access and voice calls, and the exchange 20 of a telephone station that supports call forwarding service. And an Internet service provider block 30 composed of an Internet phone gateway and an Internet server.

The user terminal block 10 basically consists of an Internet terminal type based on a general personal computer, which has a basic block 113 composed of a central processing unit, a storage unit, and various peripherals, and includes a modem 108 and a PPP ( 109), an operating system 111 supporting TCP / IP 110, a web browser program 112, and the like, and a terminal capable of connecting to the Internet. In addition, a separate device is required, which requires the following components to enable the use of a regular phone on the same line when accessing the Internet.

The switch 101 connects a regular telephone directly to the modem 108 line when the user terminal is turned off and to an AD / DA converter (analog-to-digital / digital-to-analog converter; 103) when connected to the Internet. .

The interface I / F 102 performs a function for connecting the switch 101 and the AD / DA converter 103.

The AD / DA converter 103 converts the voice signal of the telephone into a digital signal at the time of transmission, and converts the digital signal into an analog voice signal at the time of reception.

The PCM codec 104 performs pulse code modulation on the transmitted signal and pulse code demodulation on the received signal.

The voice codec 105 compresses the transmitted data to transmit more in unit time, and expands the received data to recover the original data.

The packet processor 106 configures the transmitted data into packet data that can be transmitted through the Internet protocol, and restores the received packet data to the state before packet processing.

The signal processor 107 generates a dial tone when the user A picks up the handset of the telephone T1 and hooks it off to try to make a call over a line which is connected to the Internet. Then, when user A inputs a telephone number, it generates first data corresponding to the input telephone number. When a user A who is connected to the Internet receives a telephone call request, the user A generates a ring tone requesting a telephone connection for informing a call reception request.

Next, the components constituting the Internet service provider block 30 are as follows.

The Internet server 114 is a computer that provides a server function in an Internet environment. When the Internet server 114 receives a request from a client through a communication network called the Internet 116, the Internet server 114 performs a function to notify a result of the operation. For example, the web browser may request web information of the web server 117.

The gateway 115 plays a role for matching a regular telephone with an internet telephone. Specifically, the caller requests a telephone number corresponding to the data requested by the person who is provided with the Internet service to the exchange, and generates a voice signal by demodulating the packet data input when connecting with the call of the Internet access line.

When the call request line is busy, the call forwarding number is found and the call request signal is generated when the call request line is connected to the Internet server. When the call request line is completed, the voice signal is modulated. Generates one packet data.

In addition, the switch 20 prepares an option for providing a call forwarding service between the subscriber and the Internet service provider, thereby automatically returning the call to the Internet service provider when the user is in a call due to the Internet connection.

The detailed operation by the above configuration will be described by dividing the transmission mode and the reception mode.

First, a transmission mode in which User A attempts to make a phone call to User B while connecting to the Internet server and receiving Internet service will be described.

When the user A picks up the telephone, the switch 101 is currently busy, so the telephone is connected to the AD / DA converter 103 via the interface 102. At this time, the dial tone generated by the signal processor 107 is transmitted to the telephone T1 of the user A through the switch 101. Then, the user presses the telephone number of user B to be called. The input telephone number is converted into data, and the signal processor 107 makes a request for connection to the gateway 115 of the Internet service provider so that a telephone connection between the gateway and user B is executed. After the connection, the user A's voice is converted into a digital signal by the AD / DA converter 103, and after being subjected to PCM conversion and voice compression, is packetized by the packet processor 106, which is an Internet protocol TCP / IP 110 and Sent by the PPP 109 along with other data to the gateway 115. Then, the gateway 115 inverts the data, converts the data into a voice signal, and sends the same to the user B's telephone. After the user B's voice signal is transmitted to the gateway 115 through a general telephone network and converted into compressed data, User A's packet processor 106, voice codec 105, PCM codec 104, and AD / DA converter 103 ) Is converted into an analog voice signal again and transmitted to the telephone T1 connected to the switch 101.

Since the voice data in the terminal of the user A receiving the packet data as described above uses a virtual dedicated channel, when the modem speed is sufficient, data transmission such as a web browser and the like can be simultaneously performed at the same time as the voice telephone call.

Next, a description will be given of a reception mode in which user A attempts to make a phone call to user A through a general telephone while user A is accessing an Internet server and receives Internet service.

When user B attempts to make a phone call to user A, the exchange 20 of the telephone company detects that user A is busy and executes call forwarding to the gateway 115 of the Internet service provider. At this time, the gateway 115 searches for the number that User B first attempted to find out whether the user is connecting to his Internet server. If the user A is not connected to the Internet, information about it is transmitted to the exchange 20 to inform that the user is busy. However, when the user A confirms that the user is connecting to the Internet, the gateway 115 transmits a signal to the user processor A's signal processor 107 to indicate that a call has come. After the user A picks up the handset and the telephone connection is completed, the user A transmits a voice signal to the counterpart phone by the same operation in the above transmission mode.

Next, a telephone transmission / reception method in the Internet access mode according to the present invention will be described with reference to FIGS. 2 to 4.

First, a telephone transmission method in the Internet access mode will be described with reference to the flowchart of FIG. 2.

While the user A is connected to the Internet and receiving service, it is determined whether the user A lifts the hook to lift the handset to make a telephone call to the telephone T1 (step 201). As a result of the determination, if the hook of the telephone T1 is turned off, a call tone generated by the signal processor 107 is generated through the switch 101 to inform the user A that the button can be pressed (step 202).

Then, the user A inputs the phone number of the counterpart to whom the user wants to call (step 203), and the phone number input by the user A is converted into data conforming to the Internet communication standard and transmitted to the Internet service provider (steps 204 and 205). .

The transmitted data is connected to the gateway in the Internet service provider and attempts to dial in to the user B through the exchange using the data including the telephone number information input by the user A (steps 206 and 207). When user B accepts user A's dial-up request and lifts the telephone receiver of telephone T2, the hook is turned off and the call path is connected (steps 208 and 209). Then, the call is executed in the connected call path (210). When the user A puts down the telephone T1, the signal processor detects and sends a disconnect request signal to the gateway. The gateway terminates the connection with the user B by the connection termination request signal. After the termination is completed, the gateway sends the termination completion signal to User A's signal processor to disconnect from the gateway. If user B first puts down the telephone T2's handset, the connection between gateway G and user B is terminated first. The gateway detects this signal and notifies user A's signal processor that the connection has been terminated. The connection is terminated by sending a disconnect signal to the connected telephone (steps 211 and 212).

The detailed operation of the call execution step 210 in which the call path is connected to execute a call with the counterpart is shown in FIG. 3. A method of transmitting the voice signal of the user A to the user B through the gateway will be described with reference to FIG. 3.

The analog audio signal input through the telephone receiver of the telephone T1 is converted into a digital signal, and modulated by a modulation method such as PCM modulation and then encoded (steps 301 to 303).

The encoded data is reconstructed into packet data suitable for transmission and connected to the gateway through the server of the Internet service provider by transmission control protocol / Internet protocol (TCP / IP) and point-to-point protocol (PPP) (steps 304 to 308). ).

The gateway de-packets the received packet data into the data before transmission, decodes and demodulates and restores it (steps 309 to 311). Then, the restored digital signal is converted into an analog signal and output to the handset of the telephone T2 of user B (step 312).

On the contrary, in the method shown in FIG. 3, the gateway transmits the voice signal of the telephone receiver of the telephone T2 of the user B to the receiver of the user A. In the configuration shown in FIG. Step A), and instead, the user A's terminal operates in the same manner except that the de-packet processing to D / A conversion (steps 309 to 312) executed at the gateway are performed.

Secondly, a call reception method in the Internet access mode will be described with reference to the flowchart of FIG. 4.

First, when user B dials to request telephone call to user A, the exchange determines whether the telephone line of user A is busy, and if not, the exchange sends a call request signal to user A (401 to 402). step).

However, if the exchange detects that User A's telephone line is already connected, the call is sent to the gateway by call forwarding to the gateway of the Internet service provider instead of sending a busy signal (step 403).

Before answering the call, the gateway detects whether the user with the first telephone number attempted by user B is on the Internet, and if not, user A is on a regular phone call and receives a busy signal. (Steps 405-406).

If the user A is connected to the Internet, the gateway attempts to connect with the user A's terminal by transmitting connection request data to the user A's terminal using the connected Internet network (step 407).

After receiving the connection request, the user A's signal processor drives the bell of the connected telephone to notify the user A. Then, in response to the user A, the user A picks up the handset and connects to the call to execute the call with the user A (steps 408 to 410).

Call execution step 410 above is the same as already described in FIG.

After the call is terminated, the step of disconnecting the connection (steps 411 to 412) is the same as the hook-on determination step 211 and the disconnection step 212 of FIG.

In the above, it can be seen that general telephone transmission / reception is possible between user A who is connected to the Internet and external user B using a single line.

As described above, according to the present invention, the Internet service and the general telephone call can be simultaneously performed by using a single line, thereby maximizing the inefficiency and the line utilization rate due to the additional use of the line compared to the prior art.

Claims (4)

A communication apparatus in which telephone A1 of user A connects to telephone T2 of external user B through an Internet server and an exchange to enable telephone telephone call of Internet line. Switching means for connecting the line of T1 to a first output terminal if the user A terminal is connected to an Internet server; otherwise, for switching the line of the telephone T1 to a second output terminal; A modem connected to a first output terminal of the switching means for performing modulation and demodulation to transmit a signal to a telephone line; Transmission signal processing means connected to the second output terminal of the switching means, for generating a predetermined beep sound upon hook on / off and for generating first data corresponding to a telephone number input by a user; Transmission data processing means connected to a second output terminal of said switching means, for generating packet data by modulating a voice signal upon connection to a counterpart phone call; Control means incorporating a program for connecting the user A terminal to the Internet server; And A transmission gateway for requesting a telephone number corresponding to the first data received by the Internet server to the exchange, and generating a voice signal by demodulating the packet data input when connecting to the telephone T2. Telephone transmission apparatus in the Internet connection mode, characterized in that. A communication apparatus in which telephone A1 of user A connects to telephone T2 of user B who has requested an external call through an exchange server having an Internet server and a call forwarding function to telephone T1 of a line to which the Internet is connected, and enables a general telephone call. Connected to the exchange, if a call request line is busy, finds a number corresponding to the call forwarding number and generates a call request signal when connected to an Internet server, and inputs a voice when the user A and the phone connection are completed. A reception gateway for generating packet data modulated with a signal; Receiving signal processing means for receiving the call request signal and generating a predetermined tone for informing a call reception request; Control means incorporating a program for connecting the user A terminal to the Internet server; And And receiving data processing means for generating a voice signal after receiving and demodulating the packet data. A communication method in which a user A connects to a telephone T2 of an external user B through an Internet server and an exchange with a telephone T1 of a line to which the Internet is connected, and enables a general telephone call. A dial tone generating step for generating a predetermined dial tone when the telephone T1 of the line being connected to the Internet is hooked off; A data generating step of generating data corresponding to a predetermined telephone number to be called by the user A after the predetermined dial tone is generated; A data transmission step of transmitting the data of the data generation step to a gateway through an internet server; A call request step for requesting an exchange to connect to the telephone T2 line corresponding to the data transmitted to the gateway; A transmission step for transmitting a voice signal generated in the telephone T1 and the telephone T2 to a counterpart telephone line when the telephone T1 line and the telephone T2 line are connected by telephone through the exchange; And And terminating the connection with the gateway by detecting that the hook of the telephone T1 or the telephone T2 is turned on. A communication method in which a user A connects to a telephone T1 of a line that is connected to the Internet, and connects to a telephone T2 of a user B who has requested an external call through an Internet server and an exchange having a call forwarding function, thereby enabling a general telephone call. A call forwarding step when the telephone T1 line receiving the call request is detected to be in a call and transmitting a signal corresponding to the telephone number requested by the call to the gateway of the Internet service provider; Searching for an Internet accessor having a telephone number corresponding to the signal received by the gateway of the call forwarding step; A connection request step of transmitting a connection request signal on a line corresponding to the user number of the Internet access person found in the search step; A reception sound generation step of generating a predetermined reception sound when the connection request signal is input to the user A terminal; A transmission step for transmitting a voice signal of the telephone T1 and the telephone T2 to a counterpart telephone when the call is connected in response to the connection request signal; And And canceling the connection to the gateway by detecting that the hook of the T1 or T2 is turned on.

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