KR950010941B1 - S-interface card for isdn and method thereof - Google Patents

Abstract

a call control hierarchy and PC application program device comprised of a call control hierarchy, a user interface and a user application program; an S card interface device for transmitting/receiving message and data requested from the call control hierarchy and PC application program device by using a PC bus, I/O and a memory; a DPRAM PC interface device for transmitting/receiving a call control message and a hierarchy 3 message; a B channel communication device for receiving data made in the call control hierarchy and PC application program device via the PC bus; a line interface device for performing a B channel selection function, a D channel data transmitting/receiving function, 100% alternate mark inversion code process, a frame check sequence process for detection of error and so on; an audio interface device for performing a voice communication; and a step control device for performing a D channel protocol process and for controlling the S interface card function for integrated services digital network.

Description

Comprehensive information network S interface card and its operation method

1 is an overall functional block diagram of a PC S interface card for ISDN according to the present invention.

2 is a software functional block diagram of a PC S interface card for ISDN according to the present invention.

3 is a flowchart of the overall processing of the operating method of the PC S interface card according to the present invention.

4 is a flowchart illustrating a call control layer module processing routine according to the present invention.

5 is a flowchart of an application program module processing routine according to the present invention.

6 is a flowchart of a communication module processing routine between an S card and a PC according to the present invention.

7 is a flow diagram of a layer 3 module processing routine in accordance with the present invention.

8 is a flowchart of a management module processing routine according to the present invention.

9 is a flowchart of a layer 2 module processing routine according to the present invention.

10 is a flow diagram of a layer 1 module processing routine according to the present invention.

* Explanation of symbols for main parts of the drawings

11: call control layer and PC application program unit

12: S card interface unit 13: DPRAM PC interface unit

14: B channel communication unit 15: audio interface unit

16: line interface unit 17: system control unit

The present invention relates to an ISDN S interface card mounted in a general-purpose IBM compatible personal computer expansion slot for performing ISDN S interface access, and a method of operating the same.

In the conventional PC S interface card for ISDN, the call control layer and the functions of layers 3, 2, and 1 of the ISDN D channel protocol are mixed with the S interface card and the OC. Therefore, when the call control layer is mounted on the S interface card, not only the user cannot access the necessary information, but also the flexibility of the service is reduced because the specific message requested by the user is not delivered. Since I / O devices (PIO or SIO) are used, not only the communication speed is low, but also when the user wants to use the same PC I / O, problems such as difficulty in using due to a collision may occur.

Therefore, the present invention devised to solve the above problems enables efficient ISDN S interface access for users using IBM-compatible personal computers, and call control layer and layer 3, 2, and 1 as PC and S interface cards, respectively. The purpose of the present invention is to provide an ISDN interface card and an operation method thereof to perform communication between a PC and an S interface by using a specific memory area of a PC as DPRAM (Dual Port RAM).

In order to achieve the above object, the present invention provides a call control layer program and a user interface user application program call control layer and PC application means, connected to the call control layer and PC application program means PC bus, I / O S card interface means for transmitting and receiving messages and data requested / received by the call control layer and PC application program means using a memory, and connected to the S card interface means to transmit and receive call control messages and layer 3 messages through DPRAM. DPRAM OC interface means for the D channel protocol message processing interface in charge of processing, the data created by the call control layer and PC application program means via the S card interface means via the PC bus to perform the necessary processing and then sent B channel communication means, connected to the B channel communication means B channel selection function and D channel data transmission / reception function, function / stop processing, 100% Alternate Mark Inversion (AMI) coding, Digital Phase Locked Loop (DPLL) processing for clock recovery, frame rearrangement and recovery, Flag detection and generation for control (LAPD), zero insertion and removal, frame check sequence (FCS) processing for error detection, line interface means for controlling D channel priority, the call control layer and After completion of the requested or requested voice call setup by the PC application program means, the audio interface means connected to the line interface means and connected to the handset is connected as the interface unit for voice call, the DPRAM PC interface means, and the line interface means. It controls each part and takes care of D channel protocol processing, so programs are stored in ROM and RAM, and functions of S interface card for ISDN By having a system control means for controlling a whole constitutes an integrated services digital network S (S) interface cards.

In addition, as an operation method for the above configuration, when an event to be processed in the call control layer occurs, a first step of performing a call control layer module processing routine, and after performing the first step, in an application program processing module A second step of executing an application program processing module processing routine when an event to be processed occurs, and performing an S card communication module processing routine of a PC unit when an event to be processed in a communication module with an S card occurs after performing the second step After performing the third step and the third step, if an event to be processed in the communication module with the PC occurs, the fourth step to perform the PC communication module processing routine, after performing the fourth step, an event to be processed in the layer 3 module occurs A fifth step of performing a layer 3 module processing routine; a sixth step of performing a management module processing routine if the event to be processed in the management module occurs after performing the fifth step; Thereafter, when an event to be processed in the layer 2 module occurs, the seventh step of executing the layer 2 module processing routine; after performing the seventh step, if an event to be processed in the layer 1 module occurs, the layer 1 module processing routine is returned and performed. The eighth step is made.

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

1 is a block diagram showing the overall functional configuration of the ISDN PC S interface card according to the present invention, 11 is a call control layer and PC application program unit, 12 is an S card interface unit, 13 is a DPRAM PC interface unit, A B channel communication unit, 15 represents an audio interface unit, 16 represents a line interface unit, and 17 represents a system control unit.

As shown in the figure, the configuration and operation of the S interface card are as follows.

The call control layer and the PC application program unit 11 are connected to the S card interface unit 12 and are composed of a call control layer program, a user interface, and a user application program.

The S card interface unit 12 uses the PC bus, I / O, and memory to transfer messages and data requested or received from the call control layer and the PC application program unit 11 to the DPRAM interface unit 13 and the B channel. Send and receive to the communication boom (14). Therefore, the message of the call control layer is created in the call control layer and transferred to the DPRAM PC interface unit 13 through the S card interface unit 12, and the call control message transmitted and received by the DPRAM PC interface unit 13 is The call control layer receives the necessary processing through the S card interface boom 12.

The 64 Kbps data created by the user in the PC application program unit 1 is transmitted to the B channel communication unit 14 by the PC bus via the S card interface unit 12, and received by the B channel communication unit 14. 64 Kbps of data is transmitted to the PC application program unit 11 via the S card interface unit 12.

The DPRAM PC interface unit 13 is a D-channel protocol message processing interface unit for transmitting / receiving call control messages and layer 3 messages through DPRAM. When the DPRAM PC interface unit 13 receives a call control message from the DPRAM PC interface unit 13, This is transmitted to the system control unit 17 in charge of layer 3 processing to generate and transmit a necessary message, and the call control message transmitted from the system control unit 17 through the line interface unit 16 is DPRAM PC interface unit 13. Through the S card interface unit 12 of the PC through the call control layer and the PC application program unit 11 to process. The DPRAM area for transmission and reception was divided into 512 bytes each for transmission and reception.

The B channel communication unit 14 is responsible for transmitting and receiving data written by the user in HDLC form at a transmission rate of 64 Kbps. The data created by the call control layer and the PC application program unit 11 is received by the B channel communication unit 14 via the PC bus via the S card interface unit 12, and required processing is performed. It transmits to the other party through the part 16. The 64 Kbps data transmitted from the other party is received by the B channel communication unit 14 through the line interface unit 16 and necessary processing is then transmitted to the other party through the line interface unit 16. The 64Kbps data transmitted from the other party arrives at the B channel communication unit 14 through the line interface unit 16, and then catches an error of the data and passes the S card interface unit 12 via the PC bus. The call control layer and the PC application program unit 11 are transferred.

The audio interface unit 15 is connected to the line interface unit 6 as an interface unit for voice call after the call control layer and the PC application program unit 11 request or requested voice call setup is completed. Connected. The analog voice signal input from the handset is converted into a digital signal, encoded, and sent to the line interface unit 16. The digital signal transmitted from the line interface unit 16 is decoded and converted into an analog signal. It performs the function of outputting through, and also has the function of generating various tones (tone) required for voice calls.

The line interface unit 16 is connected to the system control unit 17, the B channel communication unit 14, and the audio interface unit 15, and has a B channel selection function, a D channel data transmission / reception function, a function / stop ( It performs activation / deactivation processing, 100% Alternate Mark Inversion (AMI) encoding processing, Digital Phase Locked Loop (DPLL) function for clock recovery, and frame rearrangement and recovery. In addition, it performs flag detection and generation for D-channel control (LAPD), zero insertion and removal, frame check sequence (FCS) processing for error detection, and D channel priority control.

The system controller 17 is connected to the DPRAM PC interface unit 13 and the line interface unit 16 to control each unit, and is responsible for D channel protocol processing. It is stored and is in charge of controlling the functions of the S interface card for ISDN. The message related to the D channel protocol created by the call control layer and the PC application program unit 11 is interpreted by the system controller 17 when received by the DPRAM PC interface unit 13, and the layer 3 module and layer 1 of FIG. A B channel protocol such as a module is performed to be transmitted to the line interface unit 16. In addition, the D channel message received by the line interface unit 16 is interpreted by the system controller 17 to perform D channel protocol processing such as layer 1, layer 2, layer 3, and the like through FIG. The call control message is transmitted through the DPRAM PC interface unit 13.

2 is a software functional block diagram of the PC S interface card for ISDN according to the present invention. The call control layer module 21, the application program module 23, the communication module 23 between the S card and the PC, and the layer 3 module ( 24), the management module 25, the layer 2 module 26, and the layer 1 module 27 are comprised.

The call control layer module 21 is mounted on a PC and serves to process a user interface and a call control function. The user interface performs a function of selecting a service desired by the user, inputting a counterpart phone number, and notifying and responding to an incoming call.

In the case of an outgoing call, the call control layer module 21 prepares a counterpart phone number and information necessary for call setup related to a corresponding service, and transmits the information to the communication module between the S card and the PC. In addition, messages related to the progress of the call are transmitted to the call control layer of the S card and the PC through the communication module between the S card and the PC, so that information related to the call progress is transmitted to the user. In the case of an incoming call, the telephone number of the calling party or the contents related to the service of the incoming call are transmitted to the user to answer or reject the call.

After the call setup for the service is completed in the application program module 22, the application program of the service is operated. In the application module 22, as well as the protocol and environment setting for the service, 64Kbps data transmission and reception are directly connected to the B channel communication unit 14 of FIG. 1 separately from the layer 3, 2, and 1 management modules.

In the communication module 23 between the S card and the PC, call control related messages are communicated between the call control layer modules 24 through the DPRAM. In the call control layer module 21, the information necessary for call control has a certain format and is transmitted to the layer 3 through the communication module 23 between the S card and the PC. Equipped with the communication module 23 between the S card and the PC to transfer to layer 3.

The layer 3 module 24 performs a layer 3 message generation function using the message received from the communication module 23 between the S card and the PC, analyzes the information frame received from the layer 2 module 26, and corresponds to the corresponding message. It performs processing and transfers the data through the data through the communication module 23 between the S card and the PC in the form defined in the call control layer 21, if necessary.

The management module 25 performs management functions on the D channel protocol such as failure of layer 1 in the layer 1 module 27 and failure of layer 2 link in the layer 2 module 22.

The layer 2 module 26 performs a process procedure (LAPD) of the D channel layer 2. SAPI, TEI, sequence number, and CRC are added to the message generated by the layer 3 module 24 to form a LAPD frame and transmitted to the layer 1 module 27, and the frame received from the layer 1 module 27 is analyzed. It performs the function of processing the link control function of the layer 2 itself, transfers data to the layer 3 module 24 and the module 25 if necessary, notifies the layer 3 of the failure of the layer 2 link, etc. The management module 25 performs the function of delivering it.

The layer 1 module 27 transmits data requested by the layer 2 module 26, not only transfers the received data to the layer 2 module 26, but also transmits failures of the layer 1 to the layer 2 module 22. Notify function.

3 is an overall flowchart of a PC S interface card according to the present invention.

When an event to be processed in the call control layer occurs (31), the call control layer module processing routine is performed. When the user presses a keyboard or requests the S card communication module to process a message received from the S card, an event to be performed in the call control layer occurs (32).

When an event to be processed in the application program module occurs, the application program module routine of step 33 is performed. When the setup of the data call is completed, the sender and receiver each generate an event to be executed in the application program, and then an event to be executed in the application program according to the transmitted and received messages respectively (34).

When an event to be processed in the S card and the communication module occurs (35), the S card communication module processing routine of the PC unit is performed. When the call control layer requests a message to be transmitted to the S card or recognizes that there is data received from the S card, an event to be performed in the communication module with the S card occurs (36).

When an event to be processed in the communication module with the PC occurs (37), the PC communication module processing routine is executed. An event to be performed in the communication module with the PC occurs by requesting data to be transmitted from the Layer 3 module to the PC or by recognizing that there is data received from the PC (38).

When an event to be processed in the layer 3 module occurs (39), the layer module 3 processing routine is executed. When the communication module with the PC processes the message received from the PC and the message requested by the layer 2 module or when the timer related to the layer 3 module expires, an event to be performed in the layer 3 module occurs (40).

When an event to be processed in the management module occurs (41), the management module processing routine is performed. When the message requested for processing in the layer 2 module and the timer related to the management module expire, an event to be performed in the management module occurs (42).

When an event to be processed in the layer 2 module occurs (43), the layer 2 module processing routine is performed. When the message requested by the layer 1 module, the management module, and the layer 3 module and the timer related to the layer 2 module expire, an event to be performed in the layer 2 module occurs (44).

When an event to be processed in the layer 1 module occurs (45), the layer 1 module processing routine is performed. When there is data requested to be transmitted by the layer 2 module, data received by the line interface unit, or when the layer 1 related timer expires, an event to be performed by the layer 1 module occurs (46).

All routines return after processing.

4 (a) of FIG. 4 shows a flow chart of the call control layer module processing routine of FIG.

When the user presses the keyboard (47), the user interprets this, and if a key value is requested for the specific service, an action necessary for the specific service is performed (49). If no key is pressed, it checks whether a message has been received from the S card (48), processes the received message (50), and then proceeds to the next step.

4 (b) is a detailed flowchart of the key processing routine 49 of FIG. 4 (a). When the key processing routine starts (51), the key value is interpreted (52) to check whether it is a value requesting a specific service (53).

As a result of the survey 53, when a specific service for call setup is requested, the necessary parameters are defined and reflected in the initial resource and if necessary call setup message configuration (e.g., a key value for requesting a telephone service is voiced. In case of a remote monitoring system, unrestricted digital transmission capability and upper layer compatibility allow the remote monitoring system to be displayed using a pre-assigned value. If the service request key value for disconnection is configured, a message is sent to the S card by requesting a disconnect message, and if the desired key value is terminated, the execution of the PC S interface card is terminated (54). Investigate whether the signal is received (55) If the key value responds to the incoming call, construct a response message and request a message to be sent to the S card (5). 6) If it is not the answer key value for the incoming call, check whether it is a phone number (57), if it is a key value corresponding to the phone number, save the phone number (58), and when it receives a key value (return key) indicating the end of the phone number, The call setup message is constructed using the stored phone number and the parameters defined in the specific service (60), and a message transmission request is sent to the S card (61).

4 (c) is a received message processing routine of FIG. 4 (a). If there is a message received from the S card (62), the primitive is interpreted and necessary processing is performed (64). If the primitive receives a call establishment message (64), it interprets the affirmation message (66), verifies whether it is valid (67) stores the necessary information (e.g. channel number), and then gives the user a ring tone. Generate and provide a call message, request a message to be sent to the S card, and ignore the call setup message if it is not a valid message (68).

If the message received from the S card is a primitive other than call setup (64), the corresponding primitive is interpreted and necessary processing is performed (e.g., a busy tone is generated to the user when receiving a disconnect message of the telephone). To indicate that the arc has been cut (65).

5 shows an application program module processing routine flow chart.

When the processing routine of the application program module is started, it is checked whether the call of the corresponding service is connected (71). If the data call of the service is active, it will process the transmission / reception data related to the service (where the service is a user application set for the data call, for example, telewriting, TV phone, file, transmission). , Remote sensing system, remote DB search, still picture transmission, picture transmission, etc. If there is transmission data of the corresponding service, it transmits the address where the data is located and the length of the data to the B channel communication unit ((14) in FIG. 1). If there is data received from the B channel communication unit (14 in Fig. 1), the received data and its length are taken over and the received data is processed by the corresponding service (72 to 75). If it is terminated (76), if it is terminated, the identifier of the timer is transferred to the service, and the service related to the timer termination is performed (77). S between the card and the PC goes into a communication processing module routine.

6 shows a flow chart of the communication module processing routine between the S card and the PC.

The communication module processing routine between the S card and the PC is composed of the S card communication module processing routine existing in the PC and the PC communication module processing routine existing in the S card.

The S card communication module processing routine performs processing related to transmission and reception with the S card at the PC, and the PC communication module processing routine performs processing related to transmission and reception with the PC at the S card.

When the S card communication module closes the request for sending a message to the S card (81), it transmits the received message to the DPRAM (82). If there is data received from the S card (83), the data is received and the data is received from the S card. The call control layer processing module is notified to the call control layer processing module (84). When the PC communication module receives the message transmission request from the PC (85), the received message is transmitted to the DPRAM (86). If there is data received from the PC (87), the data is received from the PC. 3 Notify processing module and go to layer 3 processing module (88).

7 shows a flow diagram of a layer 3 module processing routine.

Layer 3 modules are responsible for the network layer according to Q.931. If there is a message received from the PC, the primitive is interpreted and processed based on the message's suitability according to the primitive and the information contained in the message.

If the message received from the PC is a valid call message in the state (91) Q.931 using the information contained in the call setup message (shearing capacity, called number, called party number, calling party number, upper layer compatibility). A call-establishment message is constructed and a data link setup request primitive of layer 2 is used to request the data link setup from the layer 2 processing module (92, 94, 95).

If there is a message received from the layer 2 module, the primitive is interpreted and processed in the state using the message conformance according to the primitive and the necessary information included in the message (93, 94, 95). (For example, if a message received from Layer 2 is a Data Link Setup Confirmation (DL-ESTABLISH-CONFIRM) primitive, the Q above may be performed using the Data Link Data Request (DL-DATA-REQUEST) primitive to the Layer 2 processing module.) .931 Forward call setup messages and run timer T303. If the message received from layer 2 is a data-link data indication (DL-DATA-INDICATION) primitive, the message is analyzed and processed in its state. For example, if the message is call progress (CALLPRO Ceeding), the timer T303 is stopped, and the call processing layer module (FIG. 4) of the PC requests a message transmission to the PC using the call progress indication primitive.

When the layer 3 related timer is expired, the timer identifier is transferred to the corresponding state to perform timer termination related processing (93, 94, 95). (For example, when the first T303 timer identifier is taken over in a call initiate state, the call setup message is transmitted to layer 2 again, and T303 is operated again.

8 shows a flowchart of the management module processing routine.

The management module is responsible for TEI (Terminal Endpoint Identifier) related processing (TEI allocation, TEI verification, TEI inspection, TEI removal procedure).

There is a message to be processed in the management module (101), the primitive is interpreted (103) and processed in the corresponding state (104).

If the primitive of the message to be handled by the Management Module is MDL-ASSIGN INDCATION, create a TEI Assignment Request message and use the TEI Assignment Request (MDL-ASSIGN-REQUEST) primitive to send to the Layer 2 module and send the timer T303. Operate.

When the management module related timer expires (102), the identifier of the timer is transferred to the corresponding state to perform the timer termination related processing (103, 104). For example, when the first T202 timer identifier is taken over in the TEI request state, the TEI allocation request message is transferred back to the layer 2 module and the T202 is operated.

9 shows a flow diagram of a layer 2 module processing routine.

Layer 2 modules are responsible for the processing of the datalink layer in accordance with Q.921.

If there is a message to be processed in the layer 2 module (111), the primitive is interpreted and processed in the corresponding state (113, 114).

If the primitive of the message to be processed in the layer 2 module is a data link establishment request, a data link establishment message (SABME) is constructed and transmitted as a layer 1 data request primitive (PH-DATA-REQUEST) to the layer 1 module and the timer T200 is operated.

If the primitive to be processed is a data link data request, a layer 2 message is formed by attaching headers such as SAPI, TEI, and sequence number necessary for the data link to a message transferred from the layer 3 module, and then a layer 1 data request primitive (PH-DATA-). REQUEST) to the layer 1 module and activate timer T200.

If the primitive to be processed is a layer 1 data indication (PH-DATA-INDICATION), the message is interpreted and necessary processing is performed in that state. If the received message in the link setup wait state is a non-number confirmation (UA), it initializes the sequence number and the like, stops the timer T200 in operation, and notifies the layer 3 module with the DL-ESTABLISH-CONFIRM primitive. If the received message is an information frame (I), the sequence number and the like are updated, and T200 is stopped, and the layer 3 module is notified of the data link data indication (EL-DATA-INDICA-TION) primitive.

When the layer 2 module related timer expires (112), the identifier of the timer is transferred to the corresponding state to perform timer termination related processing. 113, 114, for example, when the first T200 timer identifier is taken over in the link setup standby state, the data link setup message (SABME) is transferred to the layer 1 module and the timer T 200 is operated.

10 shows a flow diagram of a layer 1 module processing routine.

The layer 1 module is responsible for the processing of the physical layer according to I.430. If there is data to be transmitted to the line interface (121), check the status of the line interface and immediately transmit the data if the state of the line interface is active, and if it is inactive, transmit the data after becoming active by sending the INFO1 signal. (122). Data received at the line interface is passed to the layer 2 module as a layer 1 data indication primitive (PH-DATA-INDICATION).

When the timer related to the layer 1 module is terminated (123), the timer identifier is transferred to the corresponding state by the timer identifier (124). For example, when the state of the line interface is inactive, the INFO1 signal is sent for activation and the timer T100 is operated. If the timer identifier T100 is terminated, the layer 2 module is used with the PERSITENT DEACTIVATION primitive. Inform them (125, 126).

As described above, the present invention is capable of making a voice call by connecting an S interface card for a PC to ISDN, and a system for remotely monitoring a remote location using file transmission / reception, image information transmission, and image information at a transmission rate of 64 Kbps. Not only can be used for access, etc., but also used for the development of a video telephone by transmitting and receiving video information along with a voice call, voice communication and data communication of 64Kbps will inevitably be widely used when ISDN service is commercialized. At present, PCs are widely used in Korea's homes, so the ISDN service can be provided by setting up an S interface card for a PC. In particular, data transmission and reception is possible significantly faster than the data transmission speed of the public network (PSTN) has the effect that can accommodate the user's various service requests using a PC.

Claims (11)

It is connected to the call control layer and PC application program means 11, which consists of a call control layer program, a user interface, and a user application program, and the call control layer and PC application program means 11, and controls a PC bus, I / O, and memory. S card interface means 12 for transmitting and receiving messages and data requested / received by the call control layer and PC application program means 11, and connected to the S card interface means 12 for call control messages and layer 3 messages. The S card interface means 12 transfers the data created by the DPRAM PC interface means 13, the call control layer and the PC application program means 11 for the D-channel protocol message processing interface which is responsible for transmitting and receiving processing through the DPRAM. It is connected to the B channel communication means 14 and the B channel communication means 14 which transmit via the PC bus via the PC bus via the necessary processing and then transmit the necessary processing. Selection and D channel data transmission and reception, function / stop processing, 100% Alternate Mark Inversion (AMI) coding, Digital Phase Locked Loop (DPLL) processing for clock recovery, frame rearrangement and recovery, and D channel control (LAPD) Flag detection and generation, zero insertion and removal, frame check sequence (FCS) processing for error detection, line interface means 16 for controlling D channel priority, the call control layer and the PC The audio interface means 15 connected to the line interface means 16 and to which the handset 19 is connected as an interface unit for a voice call after the requested or requested voice call setup is completed by the application program means 11, It is connected to the DPRAM PC interface means 13 and the line interface means 16 to control each part and to handle the D-channel protocol, so that programs are stored in the ROM and the RAM 18 and the S interface car for ISDN. ISDN-S (S) of the interface card comprising a system control unit 17 for collectively controlling the functions, characterized. Call control layer and PC application program means 11, S card interface means 12, DPRAM PC interface means 13, B channel communication means 14, audio interface means 15, line interface means 16, A method of exercising an integrated information network (S) interface card having a system control means (17), comprising: a first step of performing a call control layer module processing routine when an event to be processed in a call control layer occurs ( 31, 32) After performing the first step 31, 32, if an event to be processed in the application processing module occurs, the second step (33, 34), performing the application program processing module processing routine, the second step After performing (33, 34), if an event to be processed in the communication module with the S card occurs, the third step (35, 36), the third step (35, 36) to perform the S card communication module processing routine of the PC unit; After execution, if an event to be processed in the communication module with the PC occurs, the PC communication module processing routine The fourth step (37, 38) to perform, the fifth step (39, 40) of performing a layer 3 module processing routine when an event to be processed in the layer 3 module occurs after performing the fourth step (37, 38), After the fifth step 39, 40, if an event to be processed in the management module occurs, the sixth step (41, 42) to perform the management module processing routine, after performing the sixth step (41, 42), layer 2 If an event to be processed in the module occurs, after the seventh step (43, 44) of performing the layer 2 module processing routine and the seventh step (43, 44), if the event to be processed in the layer 1 module occurs, the layer 1 module And an eighth step (45, 46) of performing and returning a processing routine. 3. The method of claim 2, wherein the first steps (31, 32) are performed; After performing the first step 47 of checking whether the user has pressed the key and performing the first step 47, if the user presses the key, the user interprets the key, and if the key value is requested for the specific service, the user needs to take the necessary action for the specific service and not press the key. If not, the second process (48, 49) of checking whether a message has been received from the S card, the third process (50) after processing the second process (48, 49) and processing the received message and transition to the next step (50) A method of operating a comprehensive information network (S) interface card comprising a). 4. The method of claim 3, wherein the key processing routines in the second process (48, 49) are: When the key processing routine is started, the process of 1-1 (51 to 53) and the 2-1 process (51 to 53) for analyzing the key value and checking whether or not the value is requested is performed. After the process 2-2 (54, 55), and the process 2-2 (54, 55) to check whether the service is processed and transitions to the next step, and checks whether the incoming call response key value is not the specific service request value. Step 2-3 (56, 57) of constructing a response message if the response key value for the call is requested to send a message to the S card, transitioning to the next step, and checking whether it is a phone number if the response key value is not an incoming call. If the key value corresponding to the telephone number is performed after the process 2-3, the process saves the telephone number and transitions to the next step. If the return value is a key value indicating the end of the telephone number, the stored telephone number and the specific service S can be configured using the defined parameters. And a second to fourth process (58 to 61) for making a message transmission request to the card and transitioning to the next step. The method of claim 3, wherein the third process (50) comprises; If there is a message received from the S card, after interpreting the primitives to check whether the primitive has received a call setup message, steps 3-1 (62 to 64) and after performing the 3-1 processes (62 to 64). If the call setup message is not received, process 3-1 (65-67), which interprets the corresponding primitive, performs the necessary processing, transitions to the next step, and verifies whether the call setup message is valid by interpreting the call setup message. After performing the above process 3-2 (65 to 67), the necessary information is stored, the ring tone is generated and provided to the user, the ring tone is generated, the call message is configured to send a message to the S card. If it is not a valid message, it ignores and proceeds to the next step (3-3) (68). The method of claim 2, wherein the second steps (33, 34) are performed; When the processing routine of the application program module starts, the first process 71 of checking whether the call of the corresponding service is connected, and after performing the first process 71, if not connected, transitions to the next step and transmits the service if connected. After performing the second process 72 and the second process 72 to check whether there is data to be performed, if there is transmission data of the corresponding service, the B channel communication unit 14 determines the address where the data is located and the length of the data. After receiving the third process (73, 74), the third process (73, 74) to check whether there is data received from the B-channel communication unit 14, if there is received data, the service processes the received data and Investigate whether the timer related to the service has expired, and if so, the identifier of the timer is handed over to the service to allow the service to handle timer termination. A fourth process of ISDN-S (S) movement way of the interface card which comprises a 76 to. 3. The method of claim 2, wherein the third and fourth steps (35-38) are performed; When the S card communication module receives the S card message transmission request, the first process (81 to 83) and the first process (81 to 83) for transmitting the received message to the DPRAM and checking whether there is data received from the S card. (2) (84, 85), after receiving the data, notifying the call control layer that the data has been received from the S card and transitioning to the next step to check whether the PC communication module receives the message transmission request from the PC communication module. After performing the second processes 84 and 85, the received message is transmitted to the DPRAM, and the data received from the PC is checked to receive the data and notified to the layer 3 processing module that the data has been received from the PC. And a third process (86 to 88). 3. The method of claim 2, wherein the fifth step (30, 40) is; First step (91) of checking whether there is a message received from the PC, second step of checking whether there is a message received from the layer 2 module if there is no message received from the PC after performing the first step (91). (92) After performing the second process 92, if there is no message received by the layer 2 module, the third process 93 transitions to the next step if it is not terminated by checking whether the layer 3 related timer has expired. After performing the first to third processes 91 to 93, if there is a message received from the PC, the primitive is interpreted and processed in the corresponding state using the message conformance according to the primitive and information included in the message. If there is an incoming message from all the modules, use the layer 2 data link setup request primitive to request the layer 2 processing module to establish the data link, and the layer 3 related timer expires. And a fourth process (94, 95) of performing a timer termination-related process by transitioning the timer identifier to the corresponding state and transitioning to the next step. 3. The method according to claim 2, wherein the sixth step (41, 42) is performed; After performing the first step 101 of checking whether there is a message to be processed in the management module or after performing the first step 101, if the message is not to be processed by the management module, whether the timer related to the management module has expired is not finished. If the message to be processed by the management module after the second process 102, the first and second processes (101, 102) transition to the step, the primitive is interpreted and processed in the corresponding state and the management module related timer is terminated. And a third process (103, 104) of transferring the identifier of the timer to the corresponding state, processing the end of the timer, and transitioning to the next step. 3. The method according to claim 2, wherein the seventh steps (43, 44) are performed; After performing the first step 111 of checking whether there is a message to be processed in the layer 2 module, or if there is no message to be processed in the layer 2 module after performing the first step 111, the terminal 2 module is not terminated by checking whether the timer related to the layer 2 module has expired. If not, after performing the second process 112 and the first and second processes 11 and 112 transition to the next step, if there is a message to be processed in the layer 2 module, the primitive is interpreted and processed in the corresponding state. If it is terminated, a method of operating an integrated information communication network (S) interface card comprising the third step (113, 114) of taking over an identifier of the timer to a corresponding state and performing a timer termination related process and transitioning to the next step. The method of claim 2, wherein the eighth step (45, 46) is performed; After performing the first step 121 and the first step 121 of checking whether there is data to be transmitted to the line interface means 16, if there is transmission data, the data is transmitted and the next step is transmitted. 1 After the second processes 122 and 123 for checking whether the timer related to the module has expired and after the second processes 122 and 123 have been performed, if the timer for the layer 1 module is terminated, the identifier of the timer is transferred to the corresponding state. If it is not terminated, it is checked whether there is data received by the line interface means 16, and if there is no transmission data to the layer 2 module, the process proceeds to the third step 125 and 126. A method of operating a comprehensive information network (S) interface card, characterized in that made.