{"id":6540,"date":"2025-09-10T00:00:00","date_gmt":"2025-09-10T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/sonet-sdh-in-optical-transport-networks\/"},"modified":"2026-06-22T07:30:47","modified_gmt":"2026-06-22T07:30:47","slug":"sonet-sdh-in-optical-transport-networks","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sonet-sdh-in-optical-transport-networks","title":{"rendered":"SONET\/SDH l\u00e0 g\u00ec? T\u00ecm hi\u1ec3u v\u1ec1 M\u1ea1ng quang \u0111\u1ed3ng b\u1ed9"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2e748a1c9f1841a2a69a92a4830a8b8d.jpg\" alt=\"What Is SONET\/SDH?\" class=\"wp-image-6538\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2e748a1c9f1841a2a69a92a4830a8b8d.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2e748a1c9f1841a2a69a92a4830a8b8d-300x178.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2e748a1c9f1841a2a69a92a4830a8b8d-1024x608.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2e748a1c9f1841a2a69a92a4830a8b8d-768x456.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/2e748a1c9f1841a2a69a92a4830a8b8d-18x12.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >\u25b6 Gi\u1edbi thi\u1ec7u<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trong l\u0129nh v\u1ef1c vi\u1ec5n th\u00f4ng t\u1ed1c \u0111\u1ed9 cao, <strong>M\u1ea1ng quang \u0111\u1ed3ng b\u1ed9 (SONET)<\/strong> and <strong>Ph\u00e2n c\u1ea5p s\u1ed1 \u0111\u1ed3ng b\u1ed9 (SDH)<\/strong> l\u00e0 nh\u1eefng c\u00f4ng ngh\u1ec7 n\u1ec1n t\u1ea3ng cho ph\u00e9p truy\u1ec1n d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u00e1ng tin c\u1eady tr\u00ean c\u00e1c m\u1ea1ng c\u00e1p quang. Trong khi SONET ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng t\u1ea1i B\u1eafc M\u1ef9 th\u00ec SDH \u0111\u00f3ng vai tr\u00f2 l\u00e0 phi\u00ean b\u1ea3n qu\u1ed1c t\u1ebf c\u1ee7a n\u00f3, \u0111\u1eb7c bi\u1ec7t ph\u1ed5 bi\u1ebfn \u1edf ch\u00e2u \u00c2u v\u00e0 ch\u00e2u \u00c1. Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c c\u00f4ng ngh\u1ec7 n\u00e0y l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu \u0111\u1ed1i v\u1edbi c\u00e1c chuy\u00ean gia tham gia v\u00e0o thi\u1ebft k\u1ebf, b\u1ea3o tr\u00ec v\u00e0 t\u1ed1i \u01b0u h\u00f3a m\u1ea1ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u25b6 SONET l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>SONET<\/strong>, \u0111\u01b0\u1ee3c ti\u00eau chu\u1ea9n h\u00f3a b\u1edfi Vi\u1ec7n Ti\u00eau chu\u1ea9n Qu\u1ed1c gia Hoa K\u1ef3 (ANSI), l\u00e0 m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c ti\u00eau chu\u1ea9n truy\u1ec1n d\u1eabn quang \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 v\u1eadn chuy\u1ec3n kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn d\u1eef li\u1ec7u tr\u00ean kho\u1ea3ng c\u00e1ch xa b\u1eb1ng c\u00e1p quang. C\u00f4ng ngh\u1ec7 n\u00e0y s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p gh\u00e9p k\u00eanh ph\u00e2n chia theo th\u1eddi gian \u0111\u1ed3ng b\u1ed9 nh\u1eb1m k\u1ebft h\u1ee3p nhi\u1ec1u lu\u1ed3ng d\u1eef li\u1ec7u th\u00e0nh m\u1ed9t t\u00edn hi\u1ec7u quang duy nh\u1ea5t, \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c v\u1ec1 th\u1eddi gian v\u00e0 \u0111\u1ed9 tr\u1ec5 t\u1ed1i thi\u1ec3u. T\u1ed1c \u0111\u1ed9 truy\u1ec1n c\u01a1 b\u1ea3n trong SONET l\u00e0 <strong>OC-1<\/strong>, ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ed1c \u0111\u1ed9 51,84 Mbps, v\u1edbi c\u00e1c t\u1ed1c \u0111\u1ed9 cao h\u01a1n \u0111\u1ea1t \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch gh\u00e9p k\u00eanh nhi\u1ec1u t\u00edn hi\u1ec7u OC-1.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u25b6 SDH l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>SDH<\/strong>, do Li\u00ean minh Vi\u1ec5n th\u00f4ng Qu\u1ed1c t\u1ebf (<strong>ITU<\/strong>) ph\u00e1t tri\u1ec3n, ph\u1ea3n \u00e1nh c\u00e1c nguy\u00ean l\u00fd c\u1ee7a SONET nh\u01b0ng \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh nh\u1eb1m \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c to\u00e0n c\u1ea7u. SDH gi\u1edbi thi\u1ec7u m\u1ed9t c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p \u0111\u1ec3 gh\u00e9p k\u00eanh c\u00e1c t\u00edn hi\u1ec7u s\u1ed1, h\u1ed7 tr\u1ee3 vi\u1ec7c v\u1eadn chuy\u1ec3n hi\u1ec7u qu\u1ea3 c\u00e1c d\u1ecbch v\u1ee5 tho\u1ea1i, video v\u00e0 d\u1eef li\u1ec7u tr\u00ean c\u00e1c m\u1ea1ng quy m\u00f4 l\u1edbn. T\u1ed1c \u0111\u1ed9 c\u01a1 b\u1ea3n trong SDH l\u00e0 <strong>STM-1<\/strong>, ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ed1c \u0111\u1ed9 155,52 Mbps, t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi m\u1ee9c OC-3 c\u1ee7a SONET.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u25b6 Nh\u1eefng kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa SONET v\u00e0 SDH<\/h2>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 176px;\"\/><col style=\"width: 305px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"176\"><p>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"305\"><p>SONET<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>SDH<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"176\"><p><strong>C\u01a1 quan Ti\u00eau chu\u1ea9n<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"305\"><p>ANSI (Hoa K\u1ef3)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>ITU (Qu\u1ed1c t\u1ebf)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"176\"><p><strong>T\u1ed1c \u0111\u1ed9 c\u01a1 b\u1ea3n<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"305\"><p>OC-1: 51,84 Mbps<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>STM-1: 155,52 Mbps<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"176\"><p><strong>Gh\u00e9p k\u00eanh<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"305\"><p>Gh\u00e9p k\u00eanh xen k\u1ebd byte<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Gh\u00e9p k\u00eanh xen k\u1ebd byte<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"176\"><p><strong>C\u1ea5u tr\u00fac Khung<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"305\"><p>Khung SONET<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Khung SDH<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"176\"><p><strong>\u1ee8ng d\u1ee5ng<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"305\"><p>Ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng t\u1ea1i <strong>B\u1eafc M\u1ef9<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng <strong>tr\u00ean ph\u1ea1m vi qu\u1ed1c t\u1ebf<\/strong><\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >\u25b6 C\u00e1c \u1ee9ng d\u1ee5ng c\u1ee7a SONET\/SDH<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">SONET v\u00e0 SDH \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong nhi\u1ec1u \u1ee9ng d\u1ee5ng vi\u1ec5n th\u00f4ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Truy\u1ec1n t\u1ea3i tho\u1ea1i v\u00e0 video:<\/strong> \u0110\u1ea3m b\u1ea3o truy\u1ec1n t\u00edn hi\u1ec7u tho\u1ea1i v\u00e0 video ch\u1ea5t l\u01b0\u1ee3ng cao v\u1edbi \u0111\u1ed9 tr\u1ec5 t\u1ed1i thi\u1ec3u.<\/p><\/li><li><p><strong>M\u1ea1ng d\u1eef li\u1ec7u:<\/strong> Cung c\u1ea5p c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng x\u01b0\u01a1ng s\u1ed1ng \u0111\u00e1ng tin c\u1eady cho c\u00e1c m\u1ea1ng d\u1eef li\u1ec7u, h\u1ed7 tr\u1ee3 c\u00e1c giao th\u1ee9c nh\u01b0 ATM v\u00e0 Frame Relay.<\/p><\/li><li><p><strong>X\u01b0\u01a1ng s\u1ed1ng Internet:<\/strong> L\u00e0 c\u00f4ng ngh\u1ec7 n\u1ec1n t\u1ea3ng cho <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-an-isp-internet-service-provider\/\">Nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet<\/a> \u0111\u1ec3 cung c\u1ea5p c\u00e1c d\u1ecbch v\u1ee5 b\u0103ng th\u00f4ng r\u1ed9ng.<\/p><\/li><li><p><strong>M\u1ea1ng ri\u00eang:<\/strong> H\u1ed7 tr\u1ee3 c\u00e1c k\u00eanh truy\u1ec1n th\u00f4ng chuy\u00ean d\u1ee5ng cho c\u00e1c t\u1ed5 ch\u1ee9c y\u00eau c\u1ea7u k\u1ebft n\u1ed1i an to\u00e0n v\u00e0 t\u1ed1c \u0111\u1ed9 cao.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >\u25b6 S\u1ef1 ph\u00e1t tri\u1ec3n v\u00e0 tri\u1ec3n v\u1ecdng t\u01b0\u01a1ng lai<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 SONET v\u00e0 SDH \u0111\u00e3 \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong s\u1ef1 ph\u00e1t tri\u1ec3n vi\u1ec5n th\u00f4ng to\u00e0n c\u1ea7u, ng\u00e0nh c\u00f4ng nghi\u1ec7p \u0111ang d\u1ea7n chuy\u1ec3n sang c\u00e1c c\u00f4ng ngh\u1ec7 linh ho\u1ea1t v\u00e0 m\u1edf r\u1ed9ng h\u01a1n nh\u01b0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-otn-optical-transport-network\/\"><strong>M\u1ea1ng truy\u1ec1n d\u1eabn quang (OTN)<\/strong><\/a> and <strong>K\u1ebft n\u1ed1i Packet over SONET\/SDH (POS)<\/strong>. Nh\u1eefng ti\u1ebfn b\u1ed9 n\u00e0y nh\u1eb1m \u0111\u00e1p \u1ee9ng nhu c\u1ea7u ng\u00e0y c\u00e0ng t\u0103ng v\u1ec1 b\u0103ng th\u00f4ng cao h\u01a1n v\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u25b6 K\u1ebft lu\u1eadn<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">SONET v\u00e0 SDH \u0111\u00e3 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c \u0111\u1ecbnh h\u00ecnh c\u1ea3nh quan truy\u1ec1n th\u00f4ng c\u00e1p quang. C\u00e1c c\u00e1ch ti\u1ebfp c\u1eadn ti\u00eau chu\u1ea9n h\u00f3a c\u1ee7a ch\u00fang \u0111\u1ed1i v\u1edbi vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u \u0111\u00e3 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n ph\u00e1t tri\u1ec3n c\u00e1c m\u1ea1ng m\u1ea1nh m\u1ebd v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng tr\u00ean to\u00e0n th\u1ebf gi\u1edbi. Khi ng\u00e0nh vi\u1ec5n th\u00f4ng ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n, vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c nguy\u00ean l\u00fd v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a SONET v\u00e0 SDH v\u1eabn c\u00f2n thi\u1ebft y\u1ebfu \u0111\u1ed1i v\u1edbi c\u00e1c chuy\u00ean gia tham gia v\u00e0o thi\u1ebft k\u1ebf v\u00e0 b\u1ea3o tr\u00ec c\u00e1c h\u1ec7 th\u1ed1ng truy\u1ec1n d\u1eabn quang.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 c\u00e1c gi\u1ea3i ph\u00e1p m\u1ea1ng quang v\u00e0 kh\u00e1m ph\u00e1 c\u00e1c module t\u01b0\u01a1ng th\u00edch, h\u00e3y truy c\u1eadp trang web c\u1ee7a <a target=\"_blank\" rel=\"\" href=\"https:\/\/l-p.com\">C\u1eeda h\u00e0ng Ch\u00ednh th\u1ee9c LINK-PP<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Kh\u00e1m ph\u00e1 SONET v\u00e0 SDH \u2014 nh\u1eefng c\u00f4ng ngh\u1ec7 n\u1ec1n t\u1ea3ng cho truy\u1ec1n th\u00f4ng s\u1ee3i quang t\u1ed1c \u0111\u1ed9 cao. T\u00ecm hi\u1ec3u v\u1ec1 c\u00e1c ti\u00eau chu\u1ea9n, \u1ee9ng d\u1ee5ng v\u00e0 kh\u00e1c bi\u1ec7t gi\u1eefa ch\u00fang \u0111\u1ec3 n\u00e2ng cao ki\u1ebfn th\u1ee9c v\u1ec1 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng c\u1ee7a b\u1ea1n.<\/p>","protected":false},"author":1,"featured_media":6539,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[26],"class_list":["post-6540","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/6540","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/comments?post=6540"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/6540\/revisions"}],"predecessor-version":[{"id":11156,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/6540\/revisions\/11156"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/6539"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=6540"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=6540"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=6540"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}