{"id":501,"date":"2012-11-17T11:40:46","date_gmt":"2012-11-17T13:40:46","guid":{"rendered":"http:\/\/efagundes.com\/openclass_networking\/?page_id=501"},"modified":"2022-01-16T17:51:15","modified_gmt":"2022-01-16T20:51:15","slug":"sdh-processo-de-multiplexacao","status":"publish","type":"page","link":"https:\/\/efagundes.com\/networking\/multiplexacao-2\/sdh-processo-de-multiplexacao\/","title":{"rendered":"SDH &#8211; Processo de multiplexa\u00e7\u00e3o"},"content":{"rendered":"<p><a href=\"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide105.jpg\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"2496\" data-permalink=\"https:\/\/efagundes.com\/networking\/multiplexacao-2\/sdh-processo-de-multiplexacao\/slide10-6\/\" data-orig-file=\"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide105.jpg?fit=960%2C720&amp;ssl=1\" data-orig-size=\"960,720\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Slide10\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide105.jpg?fit=960%2C720&amp;ssl=1\" class=\"alignnone size-full wp-image-2496\" src=\"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide105.jpg?resize=960%2C720\" alt=\"Slide10\" width=\"960\" height=\"720\" srcset=\"https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide105.jpg?w=960&amp;ssl=1 960w, https:\/\/i0.wp.com\/efagundes.com\/networking\/wp-content\/uploads\/sites\/5\/2015\/03\/Slide105.jpg?resize=300%2C225&amp;ssl=1 300w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\" \/><\/a><\/p>\n<p>O processo de multiplexa\u00e7\u00e3o dos canais tribut\u00e1rios no frame SDH tem os seguintes passos:<\/p>\n<ul>\n<li>Mapeamento, onde os tribut\u00e1rios s\u00e3o sincronizados com o equipamento multiplex (justifica\u00e7\u00e3o de bit), encapsulados e recebem seus ponteiros (POH) para formar os VC&#8217;s;<\/li>\n<li>Alinhamento, onde os VC&#8217;s recebem novos ponteiros para formarem as unidades TU (Tributary Unit) ou AU (Administrative Unit), para permitir que o primeiro byte do VC seja localizado;<\/li>\n<li>Multiplexa\u00e7\u00e3o byte a byte, onde os VC&#8217;s de baixa ordem s\u00e3o agrupados para compor os VC&#8217;s de alta ordem ou os VC&#8217;s de alta ordem s\u00e3o processados para formar os AUG (Administrative Unit Group);<\/li>\n<li>Preenchimento, onde, na falta de tribut\u00e1rios configurados ou para completar o espa\u00e7o restante de tribut\u00e1rios de baixa ordem, s\u00e3o adicionados bits sem informa\u00e7\u00e3o para completar o frame.<\/li>\n<\/ul>\n<p>Nos equipamentos do padr\u00e3o SDH o processo de multiplexa\u00e7\u00e3o normalmente \u00e9 executado pela matriz de conex\u00e3o cruzada (Cross-connect Matrix). A capacidade desta matriz para compor os frames SDH com canais de taxas de bits diversas define, de fato, a capacidade do equipamento.<\/p>\n<p>Normalmente os equipamentos com sinais agregados de taxas de bits at\u00e9 STM-4 (622 Mbit\/s) possuem matrizes com capacidade para multiplexar canais com taxa de bits de 2 Mbit\/s at\u00e9 155 Mbit\/s. Os equipamentos com sinais agregados de taxas de bits superiores a STM-4 (622 Mbit\/s) possuem matrizes com capacidade para multiplexar canais com taxa m\u00ednima de 155 Mbit\/s.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>O processo de multiplexa\u00e7\u00e3o dos canais tribut\u00e1rios no frame SDH tem os seguintes passos: Mapeamento, onde os tribut\u00e1rios s\u00e3o sincronizados com o equipamento multiplex (justifica\u00e7\u00e3o de bit), encapsulados e recebem seus ponteiros (POH) para formar os VC&#8217;s; Alinhamento, onde os VC&#8217;s recebem novos ponteiros para formarem as unidades TU (Tributary Unit) ou AU (Administrative Unit), [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1333,"menu_order":9,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-501","page","type-page","status-publish","hentry"],"jetpack_shortlink":"https:\/\/wp.me\/P8yKGp-85","jetpack-related-posts":[{"id":498,"url":"https:\/\/efagundes.com\/networking\/multiplexacao-2\/sdh-estrutura-do-frame\/","url_meta":{"origin":501,"position":0},"title":"SDH &#8211; Estrutura do frame","author":"Eduardo Fagundes","date":"17\/11\/2012","format":false,"excerpt":"\u00a0 A hierarquia SDH foi concebida para uma arquitetura de multiplexa\u00e7\u00e3o s\u00edncrona. 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