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Interface conversion between CCITT recommendations X.21 and V.24
The subject of this thesis concerns conversion between the interfaces specified by CCITT recommendations X.21 and V.24. The evolution of public data networks against the background of data communications using the telephone network is outlined. The DTE/DCE interface is identified as being of particu...
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| Format: | Thesis |
| Language: | English |
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Department of Electrical Engineering
2016
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| _version_ | 1867613172359233536 |
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| access_status_str | Open Access |
| author | Van der Harst, Hubert |
| author2 | Bradlow, H S |
| author_browse | Bradlow, H S Van der Harst, Hubert |
| author_facet | Bradlow, H S Van der Harst, Hubert |
| author_sort | Van der Harst, Hubert |
| collection | Thesis |
| description | The subject of this thesis concerns conversion between the interfaces specified by CCITT recommendations X.21 and V.24. The evolution of public data networks against the background of data communications using the telephone network is outlined. The DTE/DCE interface is identified as being of particular importance and is explained in terms of the ISO model for Open Systems interconnection (OSI). CCITT recommendation X.21 is described in detail using the OSI layered approach. Finite state machine (FSM) terminology is defined and the concept of an interface machine introduced. CCITT recommendation V.24 is described in terms of the physical layer of the OSI model. Only those aspects of V.24 relevant to the subject of this thesis are examined. Interface conversion between X.21 and V.24 is discussed in detail and the design of devices to perform the conversion described. A microprocessor-based translator to perform interface conversion between a V.24 DTE and a X.21 DCE for switched circuit use is designed, using the FSM approach. A preliminary model of such a translator, implemented on a development system, is described. Its hardware and software are outlined and areas for further work identified. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/17105 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:31:54.917Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Department of Electrical Engineering |
| publisherStr | Department of Electrical Engineering |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/17105 Interface conversion between CCITT recommendations X.21 and V.24 Van der Harst, Hubert Bradlow, H S Electrical Engineering Data Networks Data communication The subject of this thesis concerns conversion between the interfaces specified by CCITT recommendations X.21 and V.24. The evolution of public data networks against the background of data communications using the telephone network is outlined. The DTE/DCE interface is identified as being of particular importance and is explained in terms of the ISO model for Open Systems interconnection (OSI). CCITT recommendation X.21 is described in detail using the OSI layered approach. Finite state machine (FSM) terminology is defined and the concept of an interface machine introduced. CCITT recommendation V.24 is described in terms of the physical layer of the OSI model. Only those aspects of V.24 relevant to the subject of this thesis are examined. Interface conversion between X.21 and V.24 is discussed in detail and the design of devices to perform the conversion described. A microprocessor-based translator to perform interface conversion between a V.24 DTE and a X.21 DCE for switched circuit use is designed, using the FSM approach. A preliminary model of such a translator, implemented on a development system, is described. Its hardware and software are outlined and areas for further work identified. 2016-02-18T12:12:04Z 2016-02-18T12:12:04Z 1983 Master Thesis Masters MSc (Eng) http://hdl.handle.net/11427/17105 eng application/pdf Department of Electrical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Electrical Engineering Data Networks Data communication Van der Harst, Hubert Interface conversion between CCITT recommendations X.21 and V.24 |
| thesis_degree_str | Master's |
| title | Interface conversion between CCITT recommendations X.21 and V.24 |
| title_full | Interface conversion between CCITT recommendations X.21 and V.24 |
| title_fullStr | Interface conversion between CCITT recommendations X.21 and V.24 |
| title_full_unstemmed | Interface conversion between CCITT recommendations X.21 and V.24 |
| title_short | Interface conversion between CCITT recommendations X.21 and V.24 |
| title_sort | interface conversion between ccitt recommendations x 21 and v 24 |
| topic | Electrical Engineering Data Networks Data communication |
| url | http://hdl.handle.net/11427/17105 |
| work_keys_str_mv | AT vanderharsthubert interfaceconversionbetweenccittrecommendationsx21andv24 |