A session layer for the X.400 message handling system

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dc.contributor.advisorVentura, M J Een_ZA
dc.contributor.authorVan der Westhuizen, Eugene Danielen_ZA
dc.date.accessioned2016-03-28T14:23:01Z
dc.date.available2016-03-28T14:23:01Z
dc.date.issued1990en_ZA
dc.descriptionBibliography: pages 233-235.en_ZA
dc.description.abstractThe CCITT X.400 Message Handling System resides in the Application Layer of the seven-layer Reference Model for Open Systems Interconnection. It bypasses the services of the Presentation Layer completely to interact directly with the Session Layer. The objectives of this thesis are to show how the general Session Layer may be tailored to be minimally conformant to the requirements of X. 400; to produce a formal specification of this session layer; and to show how this session layer may be implemented on a real system. The session services required by X. 400 are those of the Halfduplex, Minor Synchronization, Exceptions and Activity Management functional units of the CCITT X.215 Session Service Definition. These services, and particularly their use by X.400, are described in detail. State tables describing these services are derived from the general session service state tables. Those elements of the CCITT X. 225 Session Protocol Specification which are required to provide only those services required by X. 400 are described in detail. State tables describing this session protocol are derived from the general session protocol state tables. A formal specification of the session layer for X.400 is presented using the Formal Description Technique Estelle. This specification includes a complete session entity, which characterizes the entire session layer for X.400. A session entity for supporting X.400 is partially implemented and interfaced to an existing X.400 product on a real system. Only the Session Connection Establishment Phase of the session protocol is implemented to illustrate the technique whereby the entire session protocol may be implemented. This implementation uses the C programming language in the UNIX operating system environment.en_ZA
dc.identifier.apacitationVan der Westhuizen, E. D. (1990). <i>A session layer for the X.400 message handling system</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering. Retrieved from http://hdl.handle.net/11427/18228en_ZA
dc.identifier.chicagocitationVan der Westhuizen, Eugene Daniel. <i>"A session layer for the X.400 message handling system."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering, 1990. http://hdl.handle.net/11427/18228en_ZA
dc.identifier.citationVan der Westhuizen, E. 1990. A session layer for the X.400 message handling system. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Van der Westhuizen, Eugene Daniel AB - The CCITT X.400 Message Handling System resides in the Application Layer of the seven-layer Reference Model for Open Systems Interconnection. It bypasses the services of the Presentation Layer completely to interact directly with the Session Layer. The objectives of this thesis are to show how the general Session Layer may be tailored to be minimally conformant to the requirements of X. 400; to produce a formal specification of this session layer; and to show how this session layer may be implemented on a real system. The session services required by X. 400 are those of the Halfduplex, Minor Synchronization, Exceptions and Activity Management functional units of the CCITT X.215 Session Service Definition. These services, and particularly their use by X.400, are described in detail. State tables describing these services are derived from the general session service state tables. Those elements of the CCITT X. 225 Session Protocol Specification which are required to provide only those services required by X. 400 are described in detail. State tables describing this session protocol are derived from the general session protocol state tables. A formal specification of the session layer for X.400 is presented using the Formal Description Technique Estelle. This specification includes a complete session entity, which characterizes the entire session layer for X.400. A session entity for supporting X.400 is partially implemented and interfaced to an existing X.400 product on a real system. Only the Session Connection Establishment Phase of the session protocol is implemented to illustrate the technique whereby the entire session protocol may be implemented. This implementation uses the C programming language in the UNIX operating system environment. DA - 1990 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1990 T1 - A session layer for the X.400 message handling system TI - A session layer for the X.400 message handling system UR - http://hdl.handle.net/11427/18228 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/18228
dc.identifier.vancouvercitationVan der Westhuizen ED. A session layer for the X.400 message handling system. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering, 1990 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/18228en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Electrical Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherElectrical Engineeringen_ZA
dc.subject.otherTelecommunication systemsen_ZA
dc.subject.otherElectronic mail systemsen_ZA
dc.subject.otherFacsimile transmissionen_ZA
dc.subject.otherTeletypeen_ZA
dc.subject.otherData transmission systemsen_ZA
dc.titleA session layer for the X.400 message handling systemen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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