KR100244109B1 - Audio channel setting method between isdn s-card and general sound card - Google Patents

Abstract

The present invention provides a data channel so that voice data can be directly transmitted and received between respective drivers for driving a comprehensive information communication network (hereinafter referred to as "ISDN") connection card and a voice support card installed in a computer. By establishing a real-time call, it is possible not only to make a better sound quality call but also to establish a voice call using an integrated information communication network access card that enables end-to-end calls with general telephones. A method of establishing a voice call path using a computer equipped with a voice support card and an ISDN access card, the method comprising: identifying that a required call is a voice call; Requesting establishment of a direct path to the integrated information communication network access card driver; Designating a data transmission destination to the voice information card driver, and setting input / output ports respectively; And mutually exchanging voice data from the corresponding cards through the set input / output port. The driver may include a real-time call with no voice delay, thereby improving call quality. In addition, it is possible to make voice calls with subscribers of general telephone terminals, which are widely used, so that users can make calls directly in response to the call request from subscribers of the general telephone while using a computer. It is a very convenient and useful invention that increases the utility of the card.

Description

How to open a voice call using ISDN access card

The present invention relates to a method for establishing a voice call using an integrated information communication network (SDN) card, and more particularly, to an integrated information communication network (hereinafter referred to as "ISDN") connection card installed in a computer. By establishing a data channel so that voice data can be directly transmitted and received between the drivers that drive voice support cards, real-time calls can be implemented to enable better voice calls and to provide better quality calls. The present invention relates to a method for establishing a voice call using an integrated information communication network access card that enables end-to-end calls.

Since the ISDN access card (hereinafter referred to as "S card") does not have an input / output device for a voice call, conventionally, the voice call is implemented by implementing an additional configuration (A) for connecting a general telephone to the S card as shown in FIG. Implemented. Looking at the configuration of Figure 1a, in addition to the components that implement the function of the S card interface unit 10 for providing a telephone (T) interface; An analog converter (11) for converting a voice call with the interface unit (10) into digital or analog; and a digital converter (12); And a control unit 20 for detecting and controlling a state (loop formation, etc.) of the interface unit 10.

However, the telephone connection device A, which is additionally configured as described above and supports voice calls through the ISDN, must satisfy standards (power supply, dial tone transmission, etc.) for connecting the telephones. There was a problem that the additional cost in the production of.

In order to solve the above problems, a method of implementing a voice call using a voice support card (hereinafter, referred to as a "sound card") that is generally mounted on a personal computer instead of a connection device for directly connecting a telephone has been proposed.

In addition, the configuration of implementing a voice call using a sound card is configured as shown in FIG. 1b, which looks at the hierarchical configuration of FIG. An S card driver 3 for performing data exchange with hardware on the S card 4; A LAP-D unit 2 performing a D-channel signal processing protocol through the S card driver 3; A point-to-point protocol (hereinafter referred to as "PPP") 6 for performing data exchange, decoding, and decoding with two B-channels through the S card driver 3; A sound card driver 7 for performing data exchange with hardware on the sound card 8; An application program (1) responsive to signaling of the wrap unit (2) and mediating data exchange between the PPP unit (6) and the sound card driver (7); A sound card 8 which performs an input / output function of voice; A microphone (Mic) for inputting voice to the sound card (8); And a speaker for converting a signal output from the sound card 8 into voice.

In the voice call device having the above structure, which is composed of an S card and a sound card, a user inputs the phone number of the other party who wants to make a voice call using the computer's mouse or keyboard and opens a call. When requesting, the application program 1 transmits the input destination address to the laby unit 2. The wrap unit 2 converts the received recipient address into a packet necessary for establishing a voice call according to a protocol and transmits the received address to the S card driver 3. The S card driver 3 transmits the data received from the Rhapdy unit 2 to the D channel port of the S card 4, and the S card 4 transmits the data inputted to the D channel port to 2B. It transmits to an exchange (not shown) via the D channel which is a signaling channel of + D channel.

Subsequently, when a call response packet is received through the D channel, the S card 4 notifies the S card driver 3 of receipt of data, and when the reception of data is notified, the S card driver 3 sends the The response data is read from the D channel port of the S card 4 and transmitted to the RAPDI unit 2.

The wrap unit 2 decrypts the received response data and notifies the application 1 when the voice call is established, and the application 1 displays the establishment of the call to the user. At the same time, the sound card 8 is initialized through the sound card driver 7.

When the sound card 8 is initialized and a user inputs a voice through the microphone, the sound card 8 is converted into digital voice data and the application program 1 is transmitted through the sound card driver 7. Is sent). The application program 1, which recognizes that a voice call path is currently established, transmits the voice data received through the sound card driver 7 to the PPP unit 6, and the PPP unit 6 After converting the received voice data according to the protocol for safe and reliable data communication with the other party established the call, and transmits to the B channel port of the S card (4) through the S card driver (3). The S card 4 which receives the voice data through the B channel port transmits to the other party through the B channel, which is an information channel of the 2B + D channels.

On the other hand, when voice data is received through the S card 4, the S card 4 notifies the S card driver 3 of the data reception, and the S card driver 3 that recognizes the data reception corresponds. When the voice data is read from the B channel port and transmitted to the PPP unit 6, the PPP unit 6 removes additional data for stability and reliability of the transmitted data and transmits the voice data transmitted from the other party. Only it is separated and transmitted to the application program 1.

The application program 1 transmits the voice data received from the PPP unit 6 to the sound card 8 through the sound card driver 7 and the sound card 8 converts the voice data to analog. By converting the signal into the speaker Sp and outputting it to the speaker Sp, the user hears the voice transmitted from the other party.

If the other party requests to open a call, the call establishment procedure is slightly different, and the voice data movement path after the call is opened is the same as the above-described process.

However, in the voice call apparatus having the above-described configuration and structure, a method of implementing a voice call by opening a call path in the above-described manner is that the voice data transmitted and received even during the voice call has the stability and reliability of the data. Since it is necessary to go through a protocol for securing, the other party to be called must also have a point-to-point protocol such as the PPP unit 6, so that a call can be made with a user who has only a telephone, which is a commonly used voice call terminal. In addition, there is a problem that the voice data, which must be guaranteed in real time, is delayed in data transmission during the decoding and decoding of the data and the exchange in the application program, resulting in intermittent disconnection of the voice. There appeared to be a problem that the call sound quality is lowered.

Therefore, the present invention was created to solve the above problems, using a ISDN access card and a voice support card to enable a call with a general telephone, while guaranteeing real-time data processing, a comprehensive information communication network access is improved. The purpose is to provide a method of opening a voice call using a card.

1 shows the configuration of a voice call apparatus using a conventional integrated information communication network access card,

2 is a block diagram showing an embodiment of an apparatus for establishing a voice call path of a general information communication network access card for implementing a method for establishing a voice call path using the integrated information communication network access card according to the present invention;

3 is a flow of a method for establishing a voice call path using the integrated information communication network access card according to the present invention,

3a is a flow in which a call is requested by a caller from the other party,

3b is a flow in which a call is requested by the other party.

* Explanation of symbols for main parts of the drawings

A: Telephone connection device L: Direct path

T: Phone 1, 100: Application

2 ; LabD (LAP-D) Part 3: ISDN Access Card Driver

4: ISDN access card

6: Point-to-Point Protocal Section

7 Sound Card Driver 8 Sound Card

10: telephone interface unit 11: analog converter

12 digital converter 20 control unit

41: network connection 42: D-channel controller

43: B channel controller 300: ISDN access card driver

In order to achieve the above object, a method of establishing a voice call path using a comprehensive information communication network access card according to the present invention is to establish a voice call path using a computer equipped with a voice support card and an integrated information communication network (ISDN) connection card. CLAIMS 1. A method comprising: confirming that a requested call is a voice call; Requesting establishment of a direct path to a driver of the integrated information communication network access card; The general information communication network access card driver designating a data transmission destination to a driver of the voice support card, and setting input / output ports respectively; And exchanging voice data from the corresponding cards by the two drivers through the set input / output port.

In the method of opening a voice call path using the integrated information communication network access card according to the present invention as described above, if the call requested to be established is a voice call first, and if the call requires a voice call as a result of the determination, a procedure necessary for opening a call; That is, after performing a procedure such as answering a call or waiting for a response after a call request, a command is sent to the driver of the ISDN access card to establish a direct transmission / reception path for voice data. Accordingly, the ISDN access card driver designates a destination to transmit voice data input from the voice support card as an input port of the ISDN access card driver, and requests an input / output port setting to the driver of the voice support card. Set its own I / O port corresponding to the port. As such, when a direct path for exchanging voice data is formed between the two drivers, the voice data input from the ISDN access card is directly transmitted to the input port of the voice support card driver through the output port of the shop ISDN access card driver. Voice data input from the voice support card driver is directly transmitted to the input port of the ISDN access card driver designated at the time of opening through the output port of the voice support card driver. The voice call is made in real time.

Hereinafter, the configuration and operation of the preferred embodiment of the method for establishing a voice call path using the integrated information communication network connection card according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 2a is an overall configuration diagram of the voice call channel establishment apparatus that implements the voice call channel establishment method using the integrated information communication network connection card according to the present invention, which performs the same function as the conventional voice call channel establishment apparatus of FIG. An S card 4 and a sound card 8; A labyrinth 2; PPP section 6; And a sound card driver 7; And an S card driver 300 having an additional function of setting an input / output port for data transmission / reception with the sound card driver 7; And an application program 100 for requesting a direct path setting command from the S card driver 300 according to the contents of the opened call.

2b is a conceptual configuration in which the S card driver 300 is connected to the internal configuration of the S card 4, and an internal bus (IOM-2 Bus) and an ISDN 2B + D basic rate access (Basic Rate Access) A network connecting portion 41 for interconnecting each other; A D-channel controller 42 for exchanging D-channel data with the network connection unit 1; A B channel controller 43 for exchanging 2B channel data with the network connection unit 41; And the S card driver 300 which performs a function of writing and reading data to the D channel controller 42 and the B channel controller 43.

3 is a flowchart illustrating a method for establishing a voice call path using an ISDN access card according to the present invention by dividing a call request and an incoming call. Hereinafter, a configuration of an apparatus for establishing a voice call path of the integrated information communication network access card of FIG. Referring to Fig. 3, the method for establishing a voice call path using the ISDN access card according to the present invention will be described in detail.

First, when data requesting a voice call from the other side is input to the D channel controller 42 via the network connection part 41 and an internal bus (S2), the D channel controller 42 receives data from the S card. The S card driver 300 reads the data from the D channel controller 42 and transmits the data to the driver 2 which is the call processing protocol (S12). Is performed to open a call with the other party.

On the other hand, the application program 100 requesting the call response to the wrap unit 2 in response to a user's response at the same time instructs the S card driver 300 to open a voice call command (S13). The S card driver 300 receiving the command to open the voice call requests the sound card driver 7 to initialize the sound card 8, and the sound card driver 7 is connected to the microphone Mic. The S card driver 300 designates its own input port as a position to transmit voice data input through the sound card 8 (S14) and requests the sound card driver 7 to open an input / output port. (S15).

If the establishment of the input / output port is successful, the S card driver 300 stores and sets the address of the established port and waits for input of voice data (S21). When the voice data is input to the network connection unit 41, it is input to the B channel controller 43 through an internal bus, and the B channel controller 43 informs the S card driver 300 of the reception of the voice data. The S card driver 300 recognizing the data reception reads the voice data from the B channel controller 43, and the sound card driver 7 previously opened and stored and set without passing through the PPP unit 6; Write directly to the input port (S22). The sound card driver 7 which recognizes the reception of the voice data by this recording transmits the received data to the sound card 8 so that the voice is output through the speaker Sp (S23). This eliminates the delay caused by data exchange between processors, and makes voice calls in real time.

When a voice is input through a microphone (Mic) to transmit a voice to the other party, the sound card 8 converts the input voice into digital voice data and informs the sound card driver 7 of data input. (S24). The sound card driver 7 notified of the data input does not read out the voice data converted through the predetermined channel and transmit the converted voice data to the application program 100, and the S card driver 3 designated as a transmission destination when an input / output port setting request is made. (S25), the recorded voice data is input to the B channel controller 43 by the S card driver 3 and transmitted to the B channel of the ISDN, so that the same as when receiving voice The call is made without voice delay.

On the other hand, even when the other party requests a telephone connection, the process until the call is established is the same as in the conventional case, and the application program 100 immediately before the call response is received from the other party to start the voice call is described above. As in one process, the S card driver 300 is instructed to open a voice call command to form a direct path (L) between the sound card driver (7), and the voice data thereafter is in real time through the formed direct path. By moving to, it is possible to transmit and listen to voice without delay.

In the above embodiment, the application program 100 checks whether the point-to-point protocol of the other party is performed without instructing the S card driver 300 to open the voice call unconditionally when the voice call is opened. A request to open a currency may optionally be performed. Therefore, if the opposite terminal is not a telephone and the point-to-point protocol is necessarily performed, the voice call can be performed in a state in which the call quality is somewhat degraded by the conventional method.

According to the present invention, a method for establishing a voice call path using an integrated information communication network access card according to the present invention forms a direct path for data transmission and reception between a drive connected to the integrated information communication network access card and a voice support card. By exchanging voice data, it is possible to make a real-time call without voice delay and improve the call quality. Also, it is possible to make a voice call with subscribers of general widely used telephone terminals. It is very convenient because the call can be answered in response to the call request from the subscriber is very convenient, it is a very convenient and useful invention to increase the efficiency of the ISDN access card to expand the destination.

Claims (3)

CLAIMS 1. A method for establishing a voice call path using a computer equipped with a voice support card and an ISDN access card, the method comprising the steps of: confirming that a requested call is a voice call; Requesting establishment of a direct path to a driver of the integrated information communication network access card; The general information communication network access card driver designating a data transmission destination to a driver of the voice support card, and setting input / output ports respectively; And exchanging voice data from the corresponding cards by the two drivers through the set input / output port. 2. The method of claim 1, wherein the verifying the voice call comprises: determining whether the received call is a voice call; Transmitting data to answer the call; Opening a voice call using a comprehensive information communication network access card, characterized in that consisting of. The method of claim 1, wherein the verifying the voice call comprises: receiving a call destination of the user; Determining whether the input destination is a voice call terminal; Transmitting call request data directed to the input destination; And waiting until the call response data is received.

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