KR970056304A - How to Handle DISC Frame in LAPD of ISDN User-Network Connection - Google Patents

How to Handle DISC Frame in LAPD of ISDN User-Network Connection Download PDF

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Publication number
KR970056304A
KR970056304A KR1019950052758A KR19950052758A KR970056304A KR 970056304 A KR970056304 A KR 970056304A KR 1019950052758 A KR1019950052758 A KR 1019950052758A KR 19950052758 A KR19950052758 A KR 19950052758A KR 970056304 A KR970056304 A KR 970056304A
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South Korea
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lapd
disc frame
network connection
counterpart
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KR1019950052758A
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Korean (ko)
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정용길
이종대
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배순훈
대우전자 주식회사
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Publication of KR970056304A publication Critical patent/KR970056304A/en

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Abstract

본 발명은 ISDN 사용자-망 접속의 LAPD에서 DISC 프레임 처리방법에 관한 것으로, 계층 1로부터 DISC프레임을 수신하는 단계(201); 상기 수신된 프리미티브의 링크 엔티티를 식별하여 해당 링크 엔티티의 현재 상태를 판별하고 어드레스 필드와 콘트롤 필드를 분석하는 단계(202,203); 상태 판별결과 상태 4 혹은 상태 5이면 DM을 상대측으로 전송하는 단계(205); 상태 판별결과 상태 6이면 UA를 상대측으로 전송하는 단계(206); 및 상태 판별결과 상태 7 혹은 상태 8이면 UI-큐의 데이타를 제거한 후 UA를 상대측으로 전송하고, DL_RELEASE_IND 프리미티브로 이를 상위계층에 알린 후 다중 프레임 설정 상태이면 T203 타이머를 정지하고 이어서 TEI 할당상태로 천이하는 단계(207~212)로 구성되어 처리절차를 단순화하여 처리시간을 단축할 수 있는 효과가 있다.The present invention relates to a method for processing a DISC frame in LAPD of an ISDN user-network connection, comprising: receiving a 201 DISC frame from Layer 1; Identifying (202,203) the link entity of the received primitive to determine the current state of the link entity and to analyze an address field and a control field; Transmitting a DM to the counterpart if the state is determined as the state 4 or the state 5 (205); If the state is determined as state 6, transmitting the UA to the counterpart (206); And if the state discrimination result is state 7 or state 8, the data of the UI-queue is removed and the UA is transmitted to the other side. The DL_RELEASE_IND primitive is notified to the upper layer. It is composed of the step (207 ~ 212) has the effect of reducing the processing time by simplifying the processing procedure.

Description

ISDN 사용자-망 접속의 LAPD에서 DISC 프레임 처리방법How to Handle DISC Frame in LAPD of ISDN User-Network Connection

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제6도는 본 발명에 따라 LAPD를 구현하는 하드웨어의 예를 도시한 도면.6 illustrates an example of hardware for implementing LAPD in accordance with the present invention.

제8도는 본 발명에 적용되는 계층2에서의 환경변수 테이블을 도시한 도면.8 is a diagram showing an environment variable table in Layer 2 applied to the present invention.

제10도는 본 발명에 따른 프리미티브 처리절차를 도시한 SDL 도면이다.10 is an SDL diagram illustrating a primitive processing procedure according to the present invention.

Claims (1)

종합정보통신망에서 ISDN단말기를 계층화된 프로토콜에 따라 망(Network)에 접속하기 위하여 계층 1로부터 PH_DATA_IND 프리미티브를 수신한 후 어드레스 필드 및 콘트롤 필드를 분석하여 명령/응답 종류에 따라 처리하는 LAPD 구현 방법에 있어서, 계층 1로부터 DISC프레임을 수신하는 단계(201); 상기 수신된 프리미티브의 링크 엔티티를 식별하여 해당 링크 엔티티의 현재 상태를 판별하고 어드레스 필드와 콘트롤 필드를 분석하는 단계(202,203); 상태 판별결과 상태 4 혹은 상태 5이면 DM을 상대측으로 전송하는 단계(205); 상태 판별결과 상태 6이면 UA를 상대측으로 전송하는 단계(206); 및 상태 판별결과 상태 7 혹은 상태 8이면 UI-큐의 데이타를 제거한 후 UA를 상대측으로 전송하고, DL_RELEASE_IND 프리미티브로 이를 상위계층에 알린 후 다중 프레임 설정 상태이면 T203 타이머를 정지하고 이어서 TEI 할당상태로 천이하는 단계(207~212)를 포함하는 ISDN 사용자-망 접속의 LAPD에서 DISC 프레임 처리방법.In a LAPD implementation method for receiving an PH_DATA_IND primitive from layer 1 and analyzing an address field and a control field according to a command / response type in order to connect an ISDN terminal to a network according to a layered protocol in a general information communication network. Receiving (201) a DISC frame from Layer 1; Identifying (202,203) the link entity of the received primitive to determine the current state of the link entity and to analyze an address field and a control field; Transmitting a DM to the counterpart if the state is determined as the state 4 or the state 5 (205); If the state is determined as state 6, transmitting the UA to the counterpart (206); And if the state discrimination result is state 7 or state 8, the data of the UI-queue is removed and the UA is transmitted to the other side. The DL_RELEASE_IND primitive is notified to the upper layer. DISC frame processing method in the LAPD of the ISDN user-network connection comprising the step (207 ~ 212). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950052758A 1995-12-20 1995-12-20 How to Handle DISC Frame in LAPD of ISDN User-Network Connection KR970056304A (en)

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KR1019950052758A KR970056304A (en) 1995-12-20 1995-12-20 How to Handle DISC Frame in LAPD of ISDN User-Network Connection

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