대한전자공학회논문지 (Journal of the Korean Institute of Telematics and Electronics)

대한전자공학회 (The Institute of Electronics and Information Engineers)
권호 표지

Packet Switching에 의한 공중 Computer 통신망 개발 연구-제3부:KORNET NNP의 X.25 Software 설계 및 구현

Development of a Packet-Switched Public Computer Network -PART 3:X.25 Software Design and Implementation of the KORNET NNP

  • 최준균 (한국과학기술원 통신공학연구실) ;
  • 김낙명 (금성전기(주)) ;
  • 김형순 ( 한국과학기술원 통신공학연구실) ;
  • 은종관 ( 한국과학기술원 통신공학연구실) ;
  • 임기홍 ( 한국과학기술원 통신공학연구실) ;
  • 조영종 ( 한국과학기술원 통신공학연구실) ;
  • 조동호 ( 한국과학기술원 통신공학연구실)
  • Choi Jun Kyun (Communications Research Laboratory, KAIST) ;
  • Kim Nak Myeong (Gold Star Elec. Co., Ltd) ;
  • Kim Hyung Soon ( Communications Research Laboratory, KAIST) ;
  • Un Chong Kwan ( Communications Research Laboratory, KAIST) ;
  • Im Gi Hong ( Communications Research Laboratory, KAIST) ;
  • Cho Young Jong ( Communications Research Laboratory, KAIST) ;
  • Cho Dong Ho ( Communications Research Laboratory, KAIST)
  • 발행 : 1986.01.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

This is the third part of the four-part paper describing the development of a packet-switched computer communication network named the KORNET. In this paper we describe the design and implementation of the X.25 protocol connecting packet mode data terminal equipments(PDTE's) with data circuit terminating equipments(DCE's). In the KORNET, the X.25 protocol has been implemented on the line processing module-A(LPMA) of the network node processor(NNP). In the implementation of X.25, we have divided the software module according to the service function, and have determined the the rules that interact between the modules. Each layer protocol has been developed using the technique of the finite state machine. Before the actual coding of softwares, we hafve used formal software development tools based on the specification and description language (SDL) and program design languate (PDL) recommended by the CCITT. In addition, for the efficient operation of the X.25 protocol system we have analyzed the system performance and the service scheduling method of each module. The results will also be given.

키워드