KR20020085550A - Call Waiting Method for PSTN/Internet phone - Google Patents

Abstract

PURPOSE: A call standby method in a trunk/Internet-combined telephone is provided to maintain an occupied phone in a call standby state in case that an Internet phone call is received when a trunk phone is busy or in case that trunk call is received when an Internet phone is busy. CONSTITUTION: A trunk/Internet-combined telephone consists of a handset(50), a hook switch(70), a hook switch sensor(80), a telephone keypad(100), a trunk interlock switch(120), a trunk/Internet phone selection part(130), a voice processor(140), a ring detection part(150), a ring generator(160), a trunk ring speaker(170), a control part(60), and an Internet access part(90). The handset(50), comprising a speaker(51) and a microphone(52), inputs or outputs voice signals. The telephone keypad(100) comprises a trunk/Internet access selection button. The Internet access part(90) comprises a voice signal interface part(92). The voice signal interface part(92) interfaces voice signals through a PC or an Internet line according to the control of the control part(60).

Description

Call Waiting Method for CO / IP Phone {Call Waiting Method for PSTN / Internet phone}

The present invention relates to a telephone combined with the Internet and a trunk line call, and more particularly, to allow a telephone call to a general telephone line over the trunk line and an internet telephone call through the internet at the same time. The present invention relates to a call waiting method for an internet / line call combined telephone having a call waiting function to notify a caller.

Recently, due to the development of information and communication, Internet telephones using the Internet as well as general telephones using a public telephone network (PSTN) are gradually expanding. In particular, the use of Internet telephony is gradually increasing due to high quality PC, high speed, and popularization of data transmission speed due to high quality, low cost and ease of use.

In order to use such an internet phone, first of all, an auxiliary device such as a PC connected to the Internet, a sound card built into the PC, and a handset (microphone and headphones) connected to the sound card must be provided. It is possible to make a call by accessing a site providing a service.

Such an internet phone is not compatible with a general phone, so it is not possible to use a regular phone because it is connected to a PC sound card (including a speaker and a microphone).

Therefore, in the related art, a general telephone can be used as an internet telephone so that an internet telephone and a general telephone can be used simultaneously.

Such a prior art is disclosed in Korean Patent Publication No. 10-1998-69507 (network telephone).

1 is a view showing a state in which a network phone according to the prior art is connected to a PC.

The public telephone or private exchange 1 is connected to the network telephone 30 via a telephone line, and is connected to the computer main body 40 via the network telephone 30.

The telephone 30 for a network generally includes a telephone unit 10 having telephone circuits, and a controller 20 for controlling a circuit connection of the telephone unit 10.

The telephone unit 10 has a ring detector 4 connected through one side of the hook switch (HS1), (HS2) and the photo coupler (3) to determine whether the telephone line 2 and the telephone connection, and the ring A speaker 6 to which the output of the detector 4 is applied, a dialer 8 to which a signal from the keyboard 7 is applied, a voice processor 9 for processing audio signals input and output to the handset 19, and It is composed of a voice amplifier (11) connected to the voice processor (9) for amplifying and outputting the speaker (6) when outputting a voice signal to the outside.

Here, the hook switch HS2 is a switch for inputting the position state of the handset to the dialer 8 and the MPU 5, and the hook switch HS1 is in accordance with the signal input HS of the dialer 9. Since it is an interlocking switch for connecting or releasing a trunk line, even when the hook switch HS2 is in an open state, the trunk line is configured to be connected or disconnected by the output of the MPU 5.

The control unit 20 for controlling the telephone unit 10 is connected to the mode switching switch 12 and the mode display light emitting diode 13, the photo coupler (3), keyboard (7), dialer (8) and voice The MPU 5 connected to the amplifier 11, and controlled by the MPU 5, connected to the output of the voice processor 9 of the telephone unit 10 or to the output of the voice amplifier 11 A changeover switch 14 for selecting and a changeover switch 15 for controlling the connection terminals RXI and TXI to the voice processor 9 of the telephone unit 10, controlled by the MPU 5. Consists of

The computer main body 40 has a serial communication port 16, a modem 17, a LAN adapter 18, and a sound card 21 therein and is connected to the internal computer board 25.

The MPU 5 of the control unit 20 is connected to the computer board 25 through the serial communication port 16, and the changeover switches 14 and 15 of the control unit 20 are respectively the computer main body 40. It is connected via an input terminal 22 and an output terminal 23 of the internal sound card 21.

In this circuit, the changeover switches 14 and 15 are connected to the Internet terminal I via a network. The audio output of the computer is output to the output terminal 23 of the sound card. Processed in (9) and output to the phone built-in speaker 6 through the handset or voice amplifier 11, the voice signal input to the handset through the microphone amplifier 32, the automatic gain control unit (AGC) ( 33) is connected to the audio input terminal 22 of the sound card 21 of the computer, and the call is filtered through the handset in the unique frequency band used by the telephone.

However, according to the prior art, there is a problem that you cannot receive a call from the Internet while making a phone call, or even if you receive a call while you receive a call from the Internet. There was no problem.

The present invention is to solve the above-mentioned problems of the prior art, the object of which is to make a telephone call and Internet phone call selectively, the Internet call during the call, or the telephone call during the Internet phone call If you have an incoming call, you can keep the call in use and make an incoming call. When the call is over, the call waiting method of the telephone line / internet call combined phone with the call waiting function can be switched to the previous call state. In providing.

1 is a view showing a state in which a network phone according to the prior art is connected to a PC,

2 is a block diagram of a combined Internet / trunk line telephone for implementing the present invention,

Figure 3 is a flow chart of the dialing process using the Internet / trunk line calls in accordance with the present invention,

4 is a flowchart illustrating an implementation process of waiting for a trunk line call by the Internet / Call Line phone according to the present invention;

5 is a flowchart illustrating a process of implementing an internet call waiting function by an internet / telephone call combined phone according to the present invention.

<Description of Symbols for Major Parts of Drawings>

50: handset 51: speaker

52: microphone 60: control unit

70: hook switch 80: hook switch detector

90: Internet connection unit 92: voice signal interface unit

100: phone keypad 110: dial search and DTMF generator

120: trunk line interlocking switch 130: trunk line / internet telephone selector

140: voice processor 150: ring detector

160: ring generator 170: CO line ring speaker

In order to achieve the object of the present invention, the call-waiting process of the Internet / Call Line phone having a call waiting function according to the present invention is a telephone line connected to the Internet and a CO line to the other party through the CO line network. A method for making a trunk line telephone call, comprising: a first step of detecting off hook of an internet / trunk line telephone connected to the Internet, a second step of detecting a current state of a selected trunk line / internet telephone mode after the off hook detection; A third step of connecting a trunk line telephone call when the trunk line telephone mode is selected, and maintaining the trunk line telephone call until an on-hook is detected; and a fourth step of alerting the user when an internet telephone request is detected during the trunk line telephone call. And a fifth step of detecting selection of a busy mode by the user who has confirmed the alarm; and the user is busy. Selecting the Preferred mode, the sixth step of waiting for a current trunk line call and connecting an internet phone call; and the seventh step of detecting selection of a trunk line call mode when the Internet phone call ends. If it is selected, it comprises the eighth step of connecting the pending CO line call.

Call waiting process of the Internet / trunk line call combined phone to achieve another object of the present invention is an Internet / trunk line phone connected to the Internet and the trunk line telephone network in the Internet phone call method of talking to the other party over the Internet, connected to the Internet A first step of detecting off-hook of the combined Internet / COD line, a second step of detecting a CO line or Internet phone mode selection key by the user after the detection, and an Internet phone when the Internet phone mode selection is detected A third step of connecting a call and maintaining an internet phone call until an on-hook is detected; a fourth step of alerting a user when a trunk line call request is detected during the internet phone call; and A fifth step of detecting selection of a busy mode by the user; and when the user selects a busy mode by the user, A sixth step of waiting for an Internet telephone call to be made and connecting a trunk line telephone call; a seventh step of detecting selection of an internet call mode when the termination of the trunk line telephone call; and a pending internet phone call if the internet call mode is selected Characterized in that comprises the eighth step of connecting.

The present invention made as described above will be described in detail with reference to the accompanying drawings.

FIG. 2 is a block diagram of a combined telephone / internet telephone for implementing the present invention. As shown in FIG. 2, a handset 50 including a speaker 51 and a microphone 52 and input / output a voice signal is provided. Hookswitch position 70, hook switch detector 80, telephone keypad 100 including the CO / IP call selection button, CO line interworking switch 120, CO / IP telephone selector 130, voice The processor 140, the ring detection unit 150, the ring generator 160, the trunk line ring speaker 170, the control unit 60 for controlling the respective units, and the control by the control unit 60 or Internet connection unit 90 including a voice signal interface unit 92 for interfacing a voice signal through an internet line.

Here, the Internet connection unit 90 is included in the main body of the Internet / telephone call combined phone so that the voice signal is directly transmitted through the Internet line so that the call can be made.

In addition, by embedding the Internet connection unit 90 in the PC is configured to transmit a voice signal through the Internet line connected to the PC.

The operation of the present invention configured as described above will be described in more detail with reference to the accompanying drawings.

First, as shown in FIG. 3, the present invention is a flowchart of a process of connecting a corresponding call as a user selects a CO line or an Internet phone, and the user is using a handset 50 of an Internet / Call Line phone that is waiting for a call. If it is heard, (S111) hook switch 70 is turned off, the hook switch detector 80 detects it and transmits it to the control unit 60. The controller 60 detects an off hook state of the phone.

The control unit 60 transmits the off-hook state of the phone to the Internet connection unit 90 (S113).

Subsequently, the user decides whether to use a trunk line telephone or an internet telephone (S114). In other words, the user presses a trunk line / internet call selection button provided in the telephone keypad 100. (S114)

Here, the Internet phone or trunk line selection can be switched by setting a predetermined key of the keypad of the phone as a mode switch key, or set a separate mode switch key, and switch the hook switch 120 on / off hook for a predetermined time. Make sure

If the user selects a trunk line call using the CO line / Internet call selection button, the control unit 60 controls each unit to enable the trunk line call.

That is, the user can dial after dialing the telephone number so that the trunk line interlocking switch 120 is turned on by the control of the control unit 60, and the trunk line / internet telephone selection unit 130 is controlled to control the speaker of the handset 50. 51 and the microphone 52 are connected to the input and output through the voice processor 140. Because of this, a telephone call is made. (S123)

If the on-hook is detected during the trunk line call, it is determined that the call is over and the state is switched to the call waiting state. (S124) (S125).

If a call is received through the trunk line, the signal detected from the ring detector 150 is transmitted to the ring generator 160 to generate a ring signal. The ring signal generated from the ring generator 160 is transmitted to the trunk line ring speaker 170 and output.

When the user listens to the ring signal output through the trunk line ring speaker 170 and picks up the handset 50 to receive the trunk line call, the hook switch 70 is switched to the off hook state, which is connected to the hook switch detector 80. It is transmitted to the control unit 60.

The control unit 60 connects the trunk line interlocking switch 120 by the off-hook signal transmitted from the hook switch detector 80 and then connects the trunk line / internet connected to the speaker 51 of the handset 50 and the microphone 52. By controlling the telephone selector 130 to connect with the voice processor 140, a trunk line call is made.

As described above, if an internet call is received through the Internet access unit 90, the CO line call is switched to the standby mode, and then the Internet call is received.

This will be described in more detail with reference to FIG. 4 as follows.

When a trunk line call is connected and an internet phone call request is received during a trunk line call (S211 ?? S213), the control unit 60 detects it through the Internet connection unit 90.

The controller 60 firstly notifies the user of the call request through the Internet phone through the Internet ring speaker 190. When the user selects the preset CO line / Internet call selection button on the telephone keypad 100 to respond to the Internet phone call request, the CO line call is switched to the standby mode during the call (S215).

Under the control of the control unit 60, the trunk line interlocking switch 120 is turned off, and each switch connected to the speaker 51 and the microphone 52 connected to the trunk line / internet telephone selection unit 130 is transferred to the Internet connection unit 90. The voice signal interface unit 92 to transmit and receive the voice signal (S216).

In this way, the Internet phone call is enabled through the Internet phone call connection process. (S217)

When the user terminates the Internet call, the handset 50 is turned on or the user selects the CO / Internet call selection button to switch to the CO line mode. (S219) (S221).

When the switch to the trunk line call mode returns to the trunk line call connection step (S211) to proceed with the trunk line call.

If, as shown in Figure 3, the user selects the Internet phone mode by holding the handset 50 to use the Internet phone (S131) and connects to the Internet phone call (S132).

That is, the control unit 60 detects the Internet telephone mode selection and turns off the CO line interworking switch 120, and controls the CO line / Internet telephone selection unit 130 to control the speaker 51 and the microphone 52 of the handset 50. To the voice signal interface unit 92 of the Internet connection unit 90.

If the Internet connection unit 90 is included in the main body of the phone, Internet calls can be made directly through the Internet line. If the Internet connection unit 90 is included in the PC, the Internet call is connected through the Internet line connected to the PC. Will be.

When the internet phone call is completed in this way, the control unit 60 detects the on-hook and switches to the call waiting state (S125).

Here, if a telephone call request is received through a CO line during an internet phone call, the current telephone line is switched to standby mode and then a call received from the CO line is received.

Referring to Figure 5 in more detail as follows.

When an internet phone call is connected and a telephone call request is received through a trunk line during a call (S311) (S312), the ring generator 160 drives the trunk line ring speaker 170 to alert the user.

On the other hand, the control unit 60 detects that a call to the trunk line through the ring detection unit 150.

If the user who checks the telephone call request from the CO line makes an on-hook, the call is terminated (S320). If the user presses a CO / Internet call selection button for waiting for a call, the controller 60 detects it and is currently busy. After waiting for the internet phone call, the system switches to the trunk line call mode (S315).

That is, the trunk line interworking switch 120 is turned on by the control of the control unit 60, and each switch of the trunk line / internet telephone selection unit 130 is switched to convert the voice processor 140 and the handset 50 into the voice processor 140. The voice signal input through the CO line is connected to the call through the CO line interworking switch 120, the voice processor 140, the CO line / Internet telephone selector 130, and the handset 50. (S316) S317)

When the user terminates the CO line call, the user switches to the waiting Internet call mode.

When the user selects the CO line / internet call selection button, the user returns to the internet call connection step (S311). (S319) Otherwise, when the user puts down the handset 50, the hook switch 70 is switched to the on hook state. The call is ended (S321).

As such, when a call is made through the Internet or the user is making a phone call through the Internet, when a call is received through a CO line, the user selects a set selection button to wait for an internet call currently connected and connects an incoming CO line. When the call is over, switch back to the Internet phone so that you can continue the call. Similarly, if an internet call is received during a CO line call, the CO line can be queued and receive an Internet call. When the Internet call ends, the P.O. line call can be resumed.

Although a preferred embodiment according to the present invention has been described above, various modifications are possible, and other persons skilled in the art may implement various modifications and modifications without departing from the claims of the present invention. It is understood that it can be done.

As described above, the present invention can selectively make a phone line call and an internet phone call, and when an internet call is received during a call, or a call is made during an internet phone call, the call is in standby. You can talk with an incoming call while you keep it, and you can switch to the previous call state after the call. In addition, since it is possible to freely switch between the trunk line telephone and the Internet telephone, it is possible to obtain the effect of using a two-line telephone.

Claims (6)

In the telephone line telephone method of making a phone call to the other party through the telephone line network with the Internet / CO line phone connected to the Internet and CO line, respectively, A first step of detecting off-hook of an Internet / trunk line telephone connected to the Internet; Detecting a current state of a selected trunk line / internet telephone mode after detecting the off-hook; A third step of connecting a trunk line telephone call when the trunk line telephone mode is selected and maintaining the trunk line telephone call until an on-hook is detected; A fourth step of alerting a user if an internet telephone request is detected during the trunk line call; A fifth step of detecting selection of a standby mode during a call by a user who has confirmed the alarm; A sixth step in which the user selects a standby mode during a call and waits for a current trunk line call and connects an internet phone call; A seventh step of detecting selection of a trunk line call mode when the Internet phone call ends; And the eighth step of connecting a waiting trunk line call when the trunk line call mode is selected. The method of claim 1, wherein the mode switching and selection switches the mode when a predetermined key set on the telephone keypad is selected. The method of claim 1, wherein the mode switching and selection switches the mode when the hook switch of the telephone is on-hook for a predetermined time. In the Internet phone call method to talk to the other party through the Internet with the Internet / CO line phone connected to the Internet and the trunk line telephone network, A first step of detecting off-hook of an Internet / trunk line telephone connected to the Internet; A second step of detecting a trunk line telephone or internet telephone mode selection key by the user after the detection; A third step of connecting an internet phone call and maintaining an internet phone call until an on-hook is detected when the internet phone mode selection is detected; A fourth step of alerting a user when a trunk line call request is detected during the internet phone call; A fifth step of detecting selection of a standby mode during a call by a user who has confirmed the call request alert; A sixth step of waiting for a busy internet telephone call and connecting a trunk line telephone call when the user selects a standby mode during a call; A seventh step of detecting selection of an internet call mode when the trunk line call is terminated; If the Internet call mode is selected, the call standby method of the Internet / trunk line call combined phone characterized in that it comprises the eighth step of connecting the waiting Internet phone call. The method of claim 4, wherein the mode switching and selection switches the mode when a predetermined key set in the telephone is selected. [5] The method of claim 4, wherein the mode switching and selection switches the mode when the hook switch of the telephone is hooked on / off for a predetermined time.