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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">sibsutis</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник СибГУТИ</journal-title><trans-title-group xml:lang="en"><trans-title>The Herald of the Siberian State University of Telecommunications and Information Science</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-6920</issn><publisher><publisher-name>СибГУТИ</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">sibsutis-95</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Статьи</subject></subj-group></article-categories><title-group><article-title>Модели элементов оптической сети доступа в условиях резервирования и учета недостоверного контроля их технического состояния</article-title><trans-title-group xml:lang="en"><trans-title>Models of optical access network elements in the conditions of redundancy and accounting of unreliable control of their technical condition</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зеленцов</surname><given-names>Б. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Zelentsov</surname><given-names>B. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Зеленцов Борис Павлович, д.т.н., профессор кафедры высшей математики </p><p>630102, Новосибирск, ул. Кирова, 86</p></bio><email xlink:type="simple">zelentsovb@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ионикова</surname><given-names>Е. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Ionikov</surname><given-names>E. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ионикова Елена Петровна, аспирант, кафедра передачи дискретных сообщений и метрологии </p></bio><email xlink:type="simple">ionikova.lena@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шувалов</surname><given-names>В. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Shuvalov</surname><given-names>V. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шувалов Вячеслав Петрович, д.т.н., профессор, заведующий кафедрой передачи дискретных сообщений иметрологии</p></bio><email xlink:type="simple">shvp04@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>СибГУТИ</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>19</day><month>04</month><year>2022</year></pub-date><volume>0</volume><issue>1</issue><fpage>3</fpage><lpage>15</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Зеленцов Б.П., Ионикова Е.П., Шувалов В.П., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Зеленцов Б.П., Ионикова Е.П., Шувалов В.П.</copyright-holder><copyright-holder xml:lang="en">Zelentsov B.P., Ionikov E.P., Shuvalov V.P.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://vestnik.sibsutis.ru/jour/article/view/95">https://vestnik.sibsutis.ru/jour/article/view/95</self-uri><abstract><p>В статье приведены модели функционирования в непрерывном времени оптических элементов пассивной оптической сети доступа. Рассматривается несколько вариантов: без резервирования, с резервированием 1:1 и с резервированием 1+1. В качестве причины нарушения работоспособности элементов рассматриваются скрытые отказы. В моделях учтены проверки технического состояния основного и резервного элемента и восстановление работоспособности после обнаружения отказа. На основе предельных вероятностей состояний произведён расчёт стационарного коэффициента готовности и коэффициента технического использования с учётом ошибок контроля I и II рода.</p></abstract><trans-abstract xml:lang="en"><p>The paper presents functioning models in continuous time of optical elements of a passive optical access network. Several options are being considered: without reservation, with reservation 1:1 and with reservation 1+1. Covert failures are considered to be the reason for the malfunction of the elements. The models take into account technical condition checks of the main and backup elements and the recovery of working capacity after a failure detection. Based on the limiting probabilities of the states, the stationary availability factor and the technical utilization factor were calculated taking into account control errors of I and II type.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>пассивная оптическая сеть</kwd><kwd>оптический линейный терминал</kwd><kwd>магистральный кабель</kwd><kwd>сплиттер</kwd><kwd>стационарный коэффициент готовности</kwd><kwd>скрытые отказы</kwd><kwd>ошибки контроля I и II рода</kwd><kwd>нелинейность шкалы рефлектометра</kwd></kwd-group><kwd-group xml:lang="en"><kwd>passive optical network</kwd><kwd>optical linear terminal</kwd><kwd>trunk cable</kwd><kwd>splitter</kwd><kwd>steady state availability</kwd><kwd>latent fault</kwd><kwd>check-out errors of the first and second kind</kwd><kwd>non-linearity of the reflectometer scale</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Esmail M. 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