KR200223325Y1 - Telephone switching apparatus - Google Patents

Abstract

The present invention provides a device for freely using a general telephone and an Internet telephone, and is connected to a trunk line, a socket that is a line for transmitting and receiving a trunk line signal, and connected to a main body of a telephone to transmit and receive a signal. A lineout socket and a phone-in socket, a handset socket connected to the handset of a telephone to transmit and receive signals, a PC socket connected to a sound card of an external computer to transmit and receive signals to and from a computer, and ring signals from a trunk line signal. A bridge circuit for detecting, a buzzer for receiving a ring detection signal from the bridge circuit, a buzzer for generating an alarm sound, a first switch for connecting and disconnecting a signal between the line in socket, line out socket, and the bridge circuit, and the phone in socket To switch between the handset socket and the PC socket In a general telephone call over a trunk line, the first switch connects the line-in socket and the line-out socket, the bridge circuit is cut off, the second switch connects the phone-in socket and the handset socket, and the PC socket. And the second switch connects the handset signal to the PC socket to allow an internet call, and the line-out socket is connected to the line. When the ring signal is input from the trunk line during the internet call by disconnecting the signal and connecting to the bridge circuit, the bridge circuit detects this and drives the buzzer.

The display device may further include a display connected to the bridge circuit to visually notify that a telephone call is received based on a ring detection signal of the bridge circuit, and further include a power display connected to a PC socket. It is also connected to a USB port of an external computer and obtains power from the USB port and supplies it to the power display unit, so that the power display unit can indicate that power is being applied. It is distinguished and no echo occurs.

Description

Telephone Switching Device {TELEPHONE SWITCHING APPARATUS}

The present invention relates to a device using a telephone while freely switching between an Internet telephone and a regular telephone.

Conventionally, there are two methods of making a telephone call using the Internet, a method of using a headset, a method of connecting a telephone by an intermediate apparatus, and the like. The telephone connection method by the intermediate apparatus is a telephone-telephone, a PC-PC, a PC-telephone.

Of these, the phone-phone method is the same as the one we usually use. The method of making a phone call in the form of a PC-PC or PC-phone is implemented by the vast network of the Internet.

This conventional method has the following problems.

First, the method of using a headset was inconvenient to use. In addition, I could not hear other sounds around me, and there was a hum, unlike the sound quality of ordinary phones. In addition, since it was not connected by telephone, there was no sense of calling, but only the signal transmission by the input / output of the sound card.

Among the methods of using the intermediate apparatus, the method of using an Internet-only telephone is an inconvenience of not being able to make a phone call using a C.O.line for a general telephone since it is an Internet-only telephone. Also, the sound quality is not much different from the headset and it is not an advanced form.

In addition, the telephone connection method by the intermediate device, unlike the headset or the Internet-only phone can be said to be a much advanced form. In other words, it adopts a method that can be used with regular telephones and Internet telephones. However, in this way, there is a problem of echo. Since this echo problem cannot be completely eliminated, there is always a problem in terms of sound quality. In addition, the sound quality is not always constant, and there is a big difference in sound quality based on input / output signals depending on the computer environment or the sound card.

In addition, there is a problem that the telephone connection method by the intermediate apparatus is not applicable to the key phone system. In addition, there is a problem in that the ring signal of the CO line cannot be detected while using the Internet phone, but even when a call is received from the general CO line during the use of the Internet phone, the phone cannot receive the call.

In addition, it was inconvenient because the power must be pulled separately from the outside.

The present invention is to provide a device for the common phone and the Internet phone can be used to eliminate the echo in a simple configuration and use a regular phone and an Internet phone to solve the above problems.

1 is a functional block diagram showing the configuration of an apparatus according to the present invention;

2 is a diagram showing a connection state of each switch when using a general telephone including a key-phone;

Fig. 3 is a diagram showing a connection state of each switch when using an internet telephone.

Explanation of symbols on the main parts of the drawings

1: line-in socket 2: line-out socket

3: phone-in socket 4: hand-set socket

5: PC socket 6: First switch

7: second switch 8: bridge circuit

9: indicator 10: buzzer

11 power supply indicator 13 trunk line

14 telephone body 15: handset

16: sound card speaker 17: sound card microphone

18: PC (Personal Computer) 19: Internet network

The present invention, in order to solve the above problems, a socket which is a line that is connected to the trunk line and transmits and receives a trunk line signal, a line-out socket and a phone-in socket that is connected to the main body of the telephone to transmit and receive signals, the handset of the telephone A handset socket connected to and connected with a sound card of an external computer, a PC socket connected to and transmitted from a computer to a sound card, a bridge circuit for detecting a ring signal from a trunk line signal, and a ring from the bridge circuit. A buzzer that receives a detection signal and emits an alarm sound, a first switch for connecting and disconnecting a signal between the line-in socket, line-out socket, and bridge circuit, and the phone-in socket, handset socket, and PC socket. It is composed of a second switch for connecting and disconnecting. The first switch connects the line-in socket and the line-out socket, and the bridge circuit is cut off, the second switch connects the phone-in socket and the handset socket, and the PC socket is cut off. And the second switch connects the handset signal to the PC socket to enable internet communication. The first switch disconnects the socket, which is the line, from the lineout socket, and connects the bridge circuit to the bridge circuit. When a ring signal is input from a trunk line, the bridge circuit detects this and drives a buzzer.

In addition, further comprising a display connected to the bridge circuit,

Based on the ring detection signal of the bridge circuit, the call can be visually informed.

In addition, the power socket is further connected to the PC socket, the PC socket is also connected to the USB port of the external computer to obtain power from the USB port and supply it to the power display may indicate that the power is being applied. .

In addition, in the device of the present invention, a signal line through which a voice signal is transmitted and received is four-wire type, and is characterized in that echo is not generated because transmission and reception are distinguished.

(Example)

Hereinafter, the present invention will be described in detail based on the embodiments of the present invention.

1 is a view showing the device of the present invention. In the figure, 1 is a line-in socket, a socket to which a trunk line or a key-phone line from a telephone station is connected.

2 is a line-out socket, which is connected to a telephone. When connected to a socket (1) which is a line, a general telephone can be used.

3, a phone-in socket is a socket for disconnecting the telephone body and the handset and instead connecting the apparatus of the present invention to the telephone body using a cable.

4 is a hand-set socket that connects the handset with the device of the present invention.

5 is a personal computer socket that connects a computer to the device of the present invention using a multi-cable and is a socket for receiving voice signals and power required for making an Internet phone call using the computer. The PC socket 5 is connected to the speaker terminal, the microphone terminal and the USB terminal of the external PC, respectively.

6 is a first switch that functions to connect or disconnect the line-in socket 1 and the line-out socket 2 with each other.

7 serves as a second switch to connect or disconnect the socket 3 and the handset socket 4 which are the phones.

8 is a bridge circuit that detects a ring signal from a signal coming from the trunk line and informs the first display unit or buzzer which will be described later.

9 and 10 indicate the first display portion and the buzzer, respectively, and emit light or make a sound based on the signal from the bridge circuit 8 to inform the user that the call has been made. Usually composed of a light emitting element and a speaker of the LED.

11 indicates the fact that power is supplied to the device of the present invention by receiving power from the PC as a power display unit. Usually composed of LEDs.

The above 1-11 are components which comprise the apparatus of this invention.

The following briefly describes the devices / parts connected to the above devices.

In the figure, 13 represents a trunk line. It may be the line coming from the telephone station itself, or in the environment using the keyphone, it may be the four line passing through the keyphone. This trunk line 13 is connected to the apparatus of the present invention to a public switched telephone network (PSTN).

14 is the main body of a normal telephone, and 15 is a handset. The connection between the telephone main body 14, the handset 15, and the device of the present invention connects a modular jack or the like of the telephone body 14 to the phone-in socket 3 as shown in FIG. To the handset socket (4).

16 is a sound card speaker of a PC and is connected to the device of the present invention through a speaker jack or the like attached to the back of the PC.

17 is connected to the device of the present invention through a microphone jack which is also attached to the back of the personal computer PC.

On the other hand, 19 represents the Internet network (Internet Network) is connected to the device of the present invention through the PC.

20 denotes a PC on which the sound card speaker 16 and sound card microphone 17 are mounted.

Hereinafter, a method for making a phone call using the device of the present invention having the above configuration will be described in detail.

First, a method of making a call using a key phone (key phone mode) will be described.

In Figure 1, 13 represents the trunk line, so the key phone is connected to the middle of the socket 1, which is 13 and the line, and connects the trunk line with the device of the present invention. Fig. 2 shows a connection state when making a call using a key phone. As can be seen from this figure, the trunk line 13 becomes four lines through the key phone. These four lines operate the first switch 6 on to connect the telephone body 14. In addition, the second switch 7 is turned on to connect four lines from the telephone main body 14 to the handset 15. Therefore, since the handset 15 is connected to the trunk line 13 via the telephone main body 14, the first switch 6, and the key phone, the handset 15 can hear a tone so that the user can make a phone call. The method of making a call is the same as the method of making a call from an existing phone. In other words, when making an extension call, the dial tone comes out of the keyphone by picking up the handset 15. When the tone is heard and the extension number is pressed, the keyphone can connect the telephones to each other. On the other hand, when making a trunk line call, first picking up the handset 15, the dial tone comes out from the key phone. The number which listens to this tone and catches the trunk line (usually '9') is pushed on the license plate attached to the telephone main body 14. This numeric signal is transmitted to the indicator 9 and the key phone as an MFC signal. Upon receiving this signal, the key phone operates an internal switch to send a hook-off signal through the trunk line 13 and connects the telephone main body 14 and the handset 15 to the telephone exchange through the trunk line 13. . The exchange at the telephone station receiving the hookhof signal sends a dial tone. The dial tone is transmitted to the receiver 15 via the trunk line 13, the key phone, the first switch 6, the telephone body 14, and the second switch 7. The user who hears this dial tone presses the other party's number on the license plate of the telephone main body 14. Subsequent processing is the same as the conventional telephone method.

The following describes the Internet mode for making a phone call using the Internet. 3 shows a typical connection state in the Internet mode. As can be seen in this figure, the handset 15 is connected to the sound card speaker 16 and the sound card microphone 17 of the PC 18 via the handset socket 4, the second switch 7 and the PC socket 5; ) The sound card speaker 16 and the sound card microphone 17 are built in the sound card of the PC 18.

The telephone method in such a connected state is connected via the Internet network 19 by making a phone call using software or the like installed on the PC 18. This method is the same as that of the conventional Internet telephone, and thus its detailed description is omitted.

On the other hand, the telephone body 14 and the handset 15 are completely cut off from the trunk line 13 by the first switch 6 and the second switch 7, and the handset 15 is connected to the sound card of the PC 18. It is connected by four wires so that the reception and transmission of voice signals are completely separated and no echo occurs.

The following describes the ring function in the Internet mode.

As described above, in the normal Internet mode, the handset and the telephone are completely blocked from the trunk line, and the call is made through the Internet network 19 through the PC 18 only. When a call is received through a normal telephone network while making a telephone call through the Internet network, the telephone main body 14 is blocked from the trunk line 13, so there is no way to listen to the ring.

In order to solve this problem, the device of the present invention includes a bridge circuit 8 and a display body 9 or a buzzer 10. In other words, the bridge circuit 8 is turned on in the normal Internet mode, that is, in the state of FIG. When the bridge circuit 8 is turned on, the trunk line 13 is connected to the display body 9 or the buzzer 10 in a state in which the telephone body 14 and the receiver 15 are disconnected. At this time, when a call comes in, that is, a ring signal comes from the telephone company through the trunk line 13, it is transmitted to the first switch 6 through the socket 1, which is a line, and the first switch 6 which detects the signal indicates this signal. Transfer to sieve 9 and buzzer 10. Receiving this signal, the indicator 9 illuminates to indicate that a call has come. In addition, the signal is also transmitted to the buzzer 10 to make a sound such as a buzzer to notify that a call has come. The ring signal is converted into a DC signal of 1 to 1.5V through the bridge circuit 8 as a strong AC signal to drive the display 9 and the buzzer 10.

When the user knows that the telephone is on, the user interrupts the call through the Internet network, operates the first switch 6 and the second switch 7 on, lifts the handset 15, that is, hooks off the telephone body 14. And the handset 15 are called. When the call through the telephone is terminated, the first switch 6 and the second switch 7 are operated again to return to the normal internet mode to make an internet call.

In the above embodiment, the display body 9 and the buzzer 10 are installed at the same time, but there may be a method of installing at least one of them.

The following describes how to connect using the USB port.

The connection of the present method is to connect to a USB port in addition to the sound card speaker 16 and the sound card microphone 17 of the PC 18 using a multi cable. In this state, the power is supplied to the device by receiving power from the PC 18 through the USB port and transmitting the power to the power display unit 11 so as to emit LEDs of the power display unit 11 so that the user can use the device. Inform.

As described above, the device of the present invention has the effect of freely using a telephone using an existing telephone network and an Internet telephone using the Internet. In addition, it is convenient to detect a call coming from a regular telephone line, i.e. a trunk line, even when making a phone call using the Internet.

In addition, by using four wires for all connections, the sound quality is remarkably improved by completely solving the echo.

In addition, the PC's USB port can be used to power the device, making it simple to power the device.

Claims (4)

A socket which is a line connected to a trunk line to transmit and receive a trunk line signal, A line-out socket and a phone-in socket connected to the main body of the telephone to transmit and receive signals, A handset socket connected to the handset of the telephone to transmit and receive a signal, A PC socket connected to the sound card of an external computer and transmitting and receiving signals to and from the computer, A bridge circuit for detecting a ring signal from the trunk line signal; A buzzer that receives a ring detection signal from the bridge circuit and emits an alarm sound; A first switch for connecting and disconnecting signals between the line-in socket, line-out socket, and bridge circuit; It is composed of a second switch for connecting and disconnecting signals between the phone-in socket, handset socket and PC socket, In a general telephone call over a trunk line, the first switch connects the line-in socket and the line-out socket, the bridge circuit is disconnected, the second switch connects the phone-in socket and the handset socket, and the PC socket is disconnected. , When making an internet phone call using an internet network, the second switch connects the handset signal to the PC socket to enable an internet call, and the first switch blocks the line-in socket from the line-out socket. When the ring signal is input from the trunk line during the internet call by connecting to the bridge circuit, the bridge circuit detects this and drives the buzzer. Telephone switching device characterized in that. The method of claim 1, Further comprising a display connected to the bridge circuit, And a telephone switch visually indicating that a telephone call is received based on a ring detection signal of the bridge circuit. The method of claim 1, It also has a power indicator connected to the PC socket, And the PC socket is also connected to a USB port of an external computer, and obtains power from the USB port and supplies the power to the power display unit, thereby indicating that power is being applied. The method according to any one of claims 1 to 3, A signal line for transmitting and receiving a voice signal is a four-wire system, the transmission and reception is distinguished, the telephone switching device characterized in that no echo occurs.