KR101282475B1 - Method for Telephone Interface - Google Patents

Abstract

The present invention relates to a telephone interface method, comprising: a public telephone network port connected to a public telephone network side, a telephone port connected to a general telephone, and a computer port connected to a computer terminal. If a DTMF signal corresponding to an outgoing call is input from the public telephone through the telephone port while the telephone port and the public telephone network port are connected, check whether the computer port is activated, and if the computer port is activated, the telephone port Connects the computer port to the first attempt to make a call through the IP phone of the computer, and if the first attempt to make the first call connection through the IP phone of the computer fails, connects the telephone port and the public telephone network port to use a public telephone network. Second attempt to connect the call.

Description

Phone interface method {Method for Telephone Interface}

1 is a view schematically showing a telephone communication system using a telephone interface device according to the present invention.

2 is a block diagram illustrating a telephone interface device according to the present invention.

FIG. 3 is a diagram illustrating an operation flow when an incoming call is received from a PSTN in the telephone interface device shown in FIG. 2.

4 is a diagram illustrating an operation flow when an outgoing call is generated in the telephone interface apparatus shown in FIG. 2.

5A to 5C are diagrams showing the operation flow by the telephony application of the computer terminal shown in FIG.

6 is a diagram illustrating an operation flow for outgoing call processing in a telephone interface device when an outgoing call occurs in an outgoing call in the telephone communication system according to the present invention.

FIG. 7 is a diagram illustrating an operation flow of a telephone interface device according to the present invention when a telephone terminal establishes an IP phone communication when an outgoing call is generated in the computer terminal of the telephone communication system according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10,90: telephone 20: telephone interface device

30: computer terminal 40: public telephone network (PSTN)

50: gateway 60: Internet

70: Web Server 80: IP Phone Server

21 control unit 22 ring signal detector

23: CID (Caller ID) detection unit 24, 27: analog / digital (A / D) converter

25 hook signal detector 26 DTMF signal detector

28: USB module 29: DTMF signal generator

A telephone interface method of a telephone interface device comprising a public telephone network port connected to a public telephone network side, a telephone port connected to a general telephone, and a computer port connected to a computer terminal. When the DTMF signal corresponding to the outgoing call is input from the telephone through the telephone port while the computer port is connected, check whether the computer port is activated, and if the computer port is activated, connect the telephone port and the computer port to The first attempt to connect the call through the IP phone of the computer, and if the first attempt to connect the call through the IP phone of the computer fails, the second attempt to connect the call using the public telephone network by connecting the telephone port and the public telephone network port It relates to a telephone interface method.

In recent years, general telephones connected to public telephone networks (PSTNs) and computer terminals connected to the Internet are indispensable in office environments. These general telephones and computer terminals are currently used separately. That is, a general telephone is used for a call with another general telephone in a private switching network or with another telephone (general telephone or mobile telephone) outside the private switching network, and a computer terminal is used for document work and information exchange using the Internet. Used for purposes such as sending and receiving e-mails and accessing Internet web pages.

Therefore, it is desired to develop a technology for a general telephone and a computer terminal used only for individual purposes as described above, in which a computer terminal and a general telephone are interlocked so that incoming and outgoing of the general telephone is easy.

In addition, there is a demand for developing a technique for interworking with a computer terminal and a general telephone to set an outgoing call setting to IP phone communication at the time of making a call and to make an outgoing call through a PSTN if the IP phone cannot be set. .

An object of the present invention for solving the above problems is a telephone interface method of a telephone interface device comprising a public telephone network port connected to a public telephone network side, a telephone port connected to a general telephone, and a computer port connected to a computer terminal. When the DTMF signal corresponding to the outgoing call is input from the landline phone through the phone port while the phone port and the public telephone network port are connected, a first step of checking whether the computer port is activated and the computer port are activated The first step of attempting a call connection through the IP phone of the computer by connecting the phone port and the computer port, and if the first call connection attempt through the IP phone of the computer fails, the phone port and the public telephone network. Try to make a second call using a public telephone network by connecting a port. Is to provide a telephone interface method comprising a third step.

The telephone interface method according to the present invention is a telephone interface method of a telephone interface device comprising a public telephone network port connected to a public telephone network side, a telephone port connected to a general telephone, and a computer port connected to a computer terminal. When a DTMF signal corresponding to an outgoing call is input from the telephone through the telephone port while the telephone port and the public telephone network port are connected, a first step of checking whether the computer port is activated and the computer port is activated. Connecting the telephone port and the computer port to connect the telephone port and the public telephone network port if the first step of attempting a first call connection through the IP phone of the computer fails and the first call connection attempt through the IP phone of the computer fails. A third attempt to make a call connection using a public telephone network It characterized in that it comprises a system.
In the telephone interface method according to the present invention, the second step may further include a step of attempting a call connection using a public telephone network when the computer port is not activated.
In the telephone interface method according to the present invention, if the incoming call is received while the public telephone network port and the telephone port is connected, the method further comprises hooking the incoming call and outputting caller information of the incoming call to the computer port. It features.

Hereinafter, a telephone interface device and a telephone communication system using the same according to a preferred embodiment of the present invention with reference to the accompanying drawings will be described in detail.

1 is a view schematically showing a telephone communication system using a telephone interface device according to the present invention.

The telephone communication system according to the present invention includes a telephone interface device 20, a general telephone 10 and a computer terminal 30 connected to the telephone interface device 20 as essential components. In addition, the telephone interface device 20 is directly connected to the public telephone network 40 or is connected to the public telephone network 40 through an internal private switching network. The computer terminal 30 is accessible to the IP phone server 80 and the web server 70 through the Internet (60).

The telephone interface device 20 detects a ring signal and a CID signal input from the public telephone network 40 side, transfers the detected CID to the computer terminal 30, and hooks from the connected ordinary telephone 10. Detects a signal and a DTMF signal and transmits a telephone number corresponding to the detected DTMF signal to the connected computer terminal 30 to request an IP phone call, and at the same time, the general telephone 10 and the computer terminal 30 When a telephone number is input from the connected computer terminal 30, a call path is formed, and a DTMF signal corresponding to the telephone number is generated. At the same time, the connected general telephone 10 and the public telephone network 40 are controlled. The call path of the side is controlled.

In addition, the computer terminal 30 is provided with a telephony application, which is installed using a storage medium such as, for example, a CD-ROM or DVD, or connected to the web server 70 to download It can also be installed.

The telephone communication application includes an address book including a telephone number and a name established by the user. When a CID is received from the telephone interface device 20, the telephone communication application searches for the telephone number corresponding to the corresponding CID in the address book. The phone number is displayed on the screen along with the name.

In addition, the telephone communication application selects a specific telephone number of the address book and requests a telephone call, thereby requesting IP phone communication to the IP phone server 80 through the Internet 60. 10) requests to establish a call with the connected general telephone 10, and if the IP phone communication is not established after the IP phone communication request, delivers a specific phone number of the address book to the telephone interface device 20 to publicly communicate. Request an outgoing call through the telephone network 40.

In addition, when the IP phone call request is received from the phone interface device 20, the telecommunication application requests an IP phone communication request to the IP phone server 80 through the Internet 60 for the IP phone call request address. And, when the IP phone communication is established, request the telephone interface device 20 to establish a call with the connected general telephone 10. If the IP phone communication is not established after the IP phone communication request, the address book is specified. The telephone number is transmitted to the telephone interface device 20 so as to request an outgoing call through the public telephone network 40.

As described above, in the telephone communication system of the present invention, when the user makes a phone call, an IP phone telephone call is first attempted through the IP phone server 80, and when the IP phone telephone call is impossible, the telephone call is made through the public telephone network 40 secondly. Will try.

In FIG. 1, reference numeral 50 denotes a gateway located between the Internet and a public telephone network for an IP phone, and reference numeral 90 denotes a counterpart telephone connected to a public telephone network, and the present invention is not limited thereto. It may be a telephone. In this case, a separate gateway is installed between the mobile telephone network and the Internet for the IP phone, and another gateway is installed between the public telephone network and the mobile telephone network for the general telephone.

2 is a block diagram illustrating a telephone interface device according to the present invention.

As shown in the figure, the telephone interface device 20 includes a public telephone network port P1 connected to the public telephone network 40 side, a telephone port P2 connected to the general telephone 10, and a computer terminal ( And a connection port section including a computer port (P3; USB port) for connection with 20). Here, although the interface between the telephone interface device 20 and the computer terminal 30 is limited to USB in the embodiment of the figure, the present invention is not limited thereto, and other serial communication methods may be used.

In addition, the telephone interface device 20 is provided with a ring signal / CID signal detection module for detecting the ring signal and the CID (Caller ID) signal input from the public telephone network port (P1) and delivers to the control unit 21, The ring signal / CID signal detection module converts the ring signal detector 22, the CID detector 23, and the CID signal detected by the CID detector into a digital signal and transmits the analog signal to the controller 21. It includes.

In addition, the telephone interface device 20 includes a hook signal / DTMF signal detecting module for detecting a hook signal and a DTMF signal from the telephone port P2 and transferring the hook signal and a DTMF signal to the control unit 21. The DTMF signal detection module detects a hook signal (hook-on and hook-off) from the telephone port P2 and transmits the hook signal detection unit 25 to the control unit 21; DTMF signal detector 26 for detecting DTMF signals from the telephone port P2, and analog / digital for converting DTMF signals detected by the DTMF signal detector 26 into digital signals for transmission to the controller 21. And a transducer 27.

The telephone interface device 20 controls the telephone port P2 to any one of the telephone module PPM on the public telephone network port P1 and the computer port USB port P3 under the control of the controller 21. It has a switch (SW) for switching the communication path of. The contact point c of the switch SW is connected to the telephone port P2, the first contact point a is connected to the public telephone network port P1, and the second contact point b is the call module CPM. The common contact c is connected to the first contact a in a steady state.

 The telephone interface device 20 includes a DTMF signal generator 29 for generating a DTMF signal corresponding to the other party's telephone number under the control of the controller 21 and outputting the DTMF signal to the public telephone network port P1.

The telephone interface device 20 includes a computer interface module (USB module) 28 that communicates with the computer terminal 30 through the computer port (USB port; P3).

The telephone interface device 20 receives the digital voice of the IP phone counterpart via the computer terminal 30 through the computer interface module (USB module) 28 under the control of the controller 21 and converts the digital voice into the analog voice. Call module for transmitting to the phone port (P2) and converts the user's voice input from the phone port (P2) to the digital signal to the computer terminal 30 through the computer interface module (USB module; 28) ( CPM).

When the CID signal is detected and input from the ring signal / CID signal detection module (22, 23, 24), the telephone interface device 20 transmits the CID signal to the computer terminal 39 through the computer interface module (USB module) 28. Detects and inputs the CID, and when the DTMF signal is detected and input from the hook signal / DTMF signal detection module 25, 26, 27, the phone number corresponding to the DTMF signal is transmitted to the computer interface module (USB module; 28). The switch (SW) such that the telephone port (P2) is connected to the computer terminal (30) to request an IP phone call and the telephone port (P2) is formed with a call module (CPM) on the side of the computer port (USB port; P3). ), And when the telephone number is input through the computer interface module (USB module) 28, the DTMF signal generator 29 controls the DTMF signal corresponding to the telephone number to be generated and at the same time the telephone port ( P2) the dogfight It is provided with a control unit for controlling the switch (SW) so that a communication path is formed with the network port (P1).

FIG. 3 is a diagram illustrating an operation flow when an incoming call is received from a PSTN in the telephone interface device shown in FIG. 2.

First, the controller 21 of the telephone interface device 20 sets the incoming call state when receiving the ring signal from the ring signal detector 22 (steps S10 to S12). The incoming call state is the same as the busy state.

After that, when the control unit 21 receives the CID detected by the CID detecting unit 23 through the analog / digital converter 24 (step S14), it checks whether the computer interface is active (step S16). The state of the computer interface can be confirmed by communicating with the computer terminal 30 periodically or at a necessary time through the computer interface module (USB module) 28.

If it is determined in step S16 that the computer interface is active, the controller 21 converts the CID signal received through the analog / digital converter 24 into telephone number information and then converts the CID information converted into the telephone number. The control is transmitted to the computer terminal 30 via the computer interface module (USB module) 28, and the flow proceeds to step S20 where the hook signal detection unit 25 hooks off as a hook signal from the telephone port P2. (Signal when the handset is heard) is detected and input (step S20).

On the other hand, if the CID signal is not detected in step S14, the control of the controller 21 proceeds to step S20. If the computer interface is not in the active state in step S16, the control of the controller 21 proceeds to step S20.

If it is determined in step S20 that a hookoff signal is detected and input, the control unit 21 is configured to connect the telephone and the public telephone network PSTN while the common contact c of the switch SW is connected to the first contact a. Set the call status.

Thereafter, the hook signal detecting unit 25 checks whether a hook-on (a signal when the handset is lowered and the hook switch is switched on) is detected and input as a hook signal from the telephone port P2 (step S24). ).

On the other hand, if it is determined in step S24 that the hook-on signal is detected and input, the controller 21 sets a call termination state.

4 is a diagram illustrating an operation flow when an outgoing call is generated in the telephone interface apparatus shown in FIG. 2.

First, the control unit 21 determines whether the computer interface is active (step S30). If it is confirmed that the computer interface is not active, the control unit 21 sets the telephone mode to the public telephone network and ignores the input of the hook signal / DTMF signal / ring signal / CID signal and the common contact of the switch SW. The connection path between the telephone and the public telephone network PSTN is maintained while (c) is connected to the first contact a (step S56).

On the other hand, if it is determined in step S30 that the computer interface is active, the common contact c of the switch SW is controlled to switch to the second contact b (step S32), and the hook signal detection unit 25 In step S34, a hook off signal is detected and input.

When the hook-off signal is detected in step S34 and the DTMF signal is input from the analog / digital converter 27 (step S36), the control unit 21 converts the digital DTMF signal into a telephone key signal (i.e., telephone number). After converting to a signal), the computer interface module (USB module) 28 is controlled to transmit the telephone number to the computer terminal 30 to perform the IP phone call request (step S38).

Thereafter, when a response signal indicating that IP phone communication is established through the computer interface module (USB module) 28 is received from the computer terminal 30 (step S40), the controller 21 mediates the computer terminal 30. IP phone call state of one telephone is set (step S42). As a result, the telephone 10 and the counterpart telephone can be called by an IP phone call path via the telephone interface device 20, the computer terminal 30, the Internet 60, and the IP phone server 80. .

Subsequently, when the hook on signal is detected and received by the hook signal detecting unit 25 (step S44), the control unit 21 transmits the hook on signal to the computer terminal 30 through the computer interface module (USB module) 28. Notifies that the call has ended, and controls to switch to standby.

On the other hand, in step S40, if a response signal indicating that the IP phone communication establishment failed from the computer terminal 30 via the computer interface module (USB module) 28 is received, the control unit 21 is common to the switch (SW) After controlling the contact point c to switch to the first contact point a, the converted phone key signal (telephone number signal) is transferred to the DTMF signal generator 29 to generate and output a DTMF signal (step S). S48).

Thereafter, the control unit 21 sets the call state through the public telephone network of the telephone (step S50). Subsequently, when a hook-on signal is detected and input from the hook signal detecting unit 25, the control unit 21 recognizes that the call has ended and controls to switch to the standby state (step S54).

5A to 5C are diagrams showing the operation flow by the telephony application of the computer terminal shown in FIG.

First, when a user executes a telephony application installed in the computer terminal 30, the application communicates with the IP phone server 80 through the Internet 60 and with the telephone interface device 20 through, for example, a USB port. The communication state is checked (step S62).

As a result of the checking in step S62, if it is confirmed that the communication state is abnormal, a communication error state error message is displayed on the application window displayed on the display of the computer terminal 30, and the screen is displayed, and the IP phone disabled state is set (steps S64 to S66). ).

Here, the communication abnormal state may be a communication state with the IP phone server 80 and a communication state with the telephone interface device 20, in which case the IP phone call using the general telephone 10 is impossible.

On the other hand, if the communication status is not abnormal, the application searches for the telephone number corresponding to the received CID in the address book when the CID is input from the telephone interface device 20 in step S68 (steps S64 to S70).

When the search is made in step S70, the phone number and name corresponding to the CID are displayed on the application window (steps S72 and S76).

On the other hand, if the search is not made in step S70, the phone number corresponding to the CID is displayed on the application window (steps S72 and S74).

On the other hand, the application, when an IP call request is input from the telephone interface device 20 (step S78), the IP phone call to the IP phone server 80 using the other party's phone number included in the IP call request as the called phone number. The requesting IP phone call call process is performed (step S80).

Thereafter, upon receiving a response from the IP phone server 80 that the IP phone communication is established, the application establishes an IP phone call state between the telephone terminal 10 and the computer terminal 30 via the telephone interface device 20. (Step S84). In this way, the telephone 10 and the counterpart telephone can make an IP phone call via the telephone interface device 20, the computer terminal 30, the Internet 60, the IP phone server 80, and the like.

Thereafter, the application transmits a call termination signal to the switching interface device 20 when a call termination signal by the other party is received from the IP phone server 80 (steps S86 to S88).

On the other hand, if the IP phone communication disable response is received from the IP phone server 80 in step S82, the control of the application proceeds to FIG. 5B and the communication status error error message (exactly, the IP phone communication status error error message) in the application window. Screen is displayed and the IP phone disabled state is pruned (step S90).

Thereafter, the application notifies the telephone interface device 20 of the IP phone disabling state and also notifies the telephone interface device 20 of the called number (ie, the other party's telephone number) corresponding to the IP phone origination call (step S92). ~ S94). Accordingly, the telephone interface device 20 transmits the DTMF signal corresponding to the corresponding telephone number to the public telephone network so that a telephone call can be made through the public telephone network.

On the other hand, not as an IP phone call request from the outside (i.e., a telephone interface device) as in step S78, for example, an IP phone call request to a specific phone number in an address book of an application of the computer terminal 30, for example. When an IP phone call request from the IP phone is made, IP phone call call processing is performed to request IP phone call to IP phone server 80 using the specific phone number as the called phone number (steps S96 to S98).

Thereafter, upon receiving a response from the IP phone server 80 that the IP phone communication is established, the application establishes an IP phone call state between the telephone terminal 10 and the computer terminal 30 via the telephone interface device 20. The call signal is sent to the telephone interface device 20 (steps S100 to S104). Here, the control unit 21 of the telephone interface device 20 that receives the call signal controls the ring signal generation unit RSG to generate a ring signal and output the ring signal to the telephone port P2. To occur.

In this way, when the user picks up the handset, the telephone 10 and the counterpart telephone can make IP phone calls through the telephone interface device 20, the computer terminal 30, the Internet 60, and the IP phone server 80. .

Thereafter, the application transmits the call termination signal to the switching interface device 20 when the call termination signal by the counterpart is received from the IP phone server 80 (steps S106 to S108).

On the other hand, when receiving the IP phone communication disable response from the IP phone server 80 in step S100, the control of the application proceeds to Figure 5b to perform the control of the steps S90 ~ S94.

6 is a diagram illustrating an operation flow for outgoing call processing in a telephone interface device when an outgoing call occurs in an outgoing call in the telephone communication system according to the present invention.

That is, when the control unit 21 of the telephone interface device 20 receives the called number (that is, the other party's telephone number) corresponding to the IP phone call as in step S94 of FIG. 5B (step S110). ), The controller 21 controls the common contact c of the switch SW to be switched to the first contact a, and transfers the called number (ie, the other party's telephone number) to the DTMF signal generator 29. By controlling the transfer, a DTMF signal corresponding to the called party number is generated and controlled to be output through the PSTN port P1 (step S112).

Thereafter, the controller 21 sets the phone 10 to the PSTN call state via the telephone interface device 20 so that a call can be made with the counterpart phone via the public telephone network 40 (step S114).

Subsequently, when the hook-on signal is detected and input from the hook signal detection unit 25, the controller 21 recognizes that the call is terminated and controls to switch to the standby state (step S118).

FIG. 7 is a diagram illustrating an operation flow of a telephone interface device according to the present invention when a telephone terminal establishes an IP phone communication when an outgoing call is generated in the computer terminal of the telephone communication system according to the present invention.

That is, as the call signal is transmitted to the telephone interface device 30 by the IP phone call establishment in the computer terminal 30 as in step S104 of FIG. 5C, the control unit 21 of the telephone interface device 30 calls. Upon receiving the signal (step S120), the controller 21 causes the common contact c of the switch SW to be switched to the second contact b, and controls the ring signal generator RSG to generate a ring signal. Control to output to the telephone port P2 (step S122).

Thereafter, the control unit 21 checks whether the hook-off signal is received from the hook signal detection unit 25 (that is, the user picks up the telephone receiver) (step S124).

When the reception of the hook-off signal is confirmed in the step S124, the control unit 21 sets the phone 10 to the IP phone call state through the computer terminal 30 via the telephone interface device 20 and establishes a call with the counterpart phone. IP phone call is made (step S126).

Subsequently, when the hook-on signal is detected and input from the hook signal detection unit 25, the control unit 21 recognizes that the call is terminated and controls to switch to the standby state (step S130).

On the other hand, the present invention is not limited to the above specific embodiments, but can be modified and modified in various ways without departing from the gist of the present invention. If such changes and modifications fall within the scope of the appended claims, it will be apparent that they belong to the present invention.

As described above, according to the present invention, a user is connected to a general telephone, a computer terminal, and a PSTN, respectively, and transmits a caller ID (CID) of an incoming call to the computer terminal so that caller information corresponding to the CID is displayed on the display of the computer terminal. There is an excellent efficiency that makes it easy to identify the sender.

In addition, according to the present invention, when the other party's phone number recorded in the address book of the telecommunications application installed in the computer terminal is selected, the outgoing call to the other party's phone number is first set to IP phone communication, and the IP phone communication is not set. By receiving the other party's phone number and sending outgoing calls to the PSTN, the user can eliminate the trouble of remembering the other party's phone number or referring to a business card, etc., and also eliminates the trouble of dialing the other party's phone number.

In addition, according to the present invention, when dialing the other party's telephone number using a general telephone, the corresponding party's telephone number is first transmitted to the computer terminal and set to IP phone communication, and when the IP phone communication cannot be set, the other party's phone number is received to the PSTN. By making an outgoing call, there is an excellent effect of utilizing a plurality of call channels using a regular telephone.

In addition, according to the present invention, when the counterpart phone number recorded in the address book of the telephony application installed in the computer terminal is selected, the outgoing call to the counterpart phone number is first set to IP phone communication, and the IP phone communication with the other party is established. As a result, when receiving a call signal transmitted from a computer terminal, a signal is generated and output to a general telephone. Thus, when an incoming call rings on a general telephone, the user can pick up the handset to talk with the other party to facilitate the use of the calling user. Has an excellent effect.

Claims (3)

In the telephone interface method of the telephone interface device comprising a public telephone network port for connecting to the public telephone network side, a telephone port for connecting to a general telephone, and a computer port for connecting to a computer terminal, A first step of checking whether the computer port is activated when a DTMF signal corresponding to an outgoing call is input from the telephone through the telephone port while the telephone port and the public telephone network port are connected; A second step of first making a call connection through an IP phone of the computer by connecting the telephone port and the computer port when the computer port is activated; And And a third step of attempting to make a second connection using a public telephone network by connecting the telephone port and a public telephone network port if the first call connection attempt through the IP phone of the computer fails. The method of claim 1, wherein the second step, If the computer port is not activated, further comprising the step of attempting a call connection using a public telephone network. The method of claim 1, And when the incoming call is received while the public telephone network port and the telephone port are connected, hooking the incoming call and outputting caller information of the incoming call to the computer port.

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