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clearfix"><h1>西藏光傳輸設備烽火8路帶交換功能快速以太網處理板深圳市騰云科創(chuàng)供應「深圳市騰云科創(chuàng)供應」</h1><div id="wgnkmt8" class="proBig"><div id="smjlx8f" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/sztykc/637244845101689454/9165528.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="wvxpryn" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/sztykc/637244845101689454/9165528.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="tnkhols" class="content"><p><span>需求數量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>廣東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產品關鍵詞：</span>西藏光傳輸設備烽火8路帶交換功能快速以太網處理板</p><p><span>***更新：</span>2020-06-23 17:18:28</p><p><span id="click" >瀏覽次數：0次</span></p><a rel="nofollow" class="button">聯系我們</a></div></div><div id="jda2pce" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">深圳市騰云科創(chuàng)信息咨詢有限公司</a></p><p><span>聯系人：</span>夏永 </p><p><span>郵箱: </span>87993378@qq.com</p><p><span>電話: </span>16625147809</p><p><span>傳真: </span>1550_</p><p><span>網址: </span></p><p><span>手機: </span>1550-2042477</p><p><span>地址: </span>沙井街道蠔四社區(qū)街尾塘一巷5號幸福家園A棟、B棟、C棟、D棟D棟110D</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="dxpwy3p" class="page-proshow02"><p class="title">詳細說明</p><div id="gqi3dvi" class="box"><p><p><p> 樹形網 </p> <p> <br /> </p> <p> 樹形網絡拓撲可看成是鏈形拓撲和星形拓撲的結合。 </p> <p> <br /> </p> <p> 環(huán)形網 </p> <p> <br /> </p> <p> 環(huán)形網拓撲實際上是指將鏈形拓撲首尾相連，從而使網上任何一個網元節(jié)點都不對外開放的網絡拓撲形式。這是當前使用**多的網絡拓撲形式，主要是因為它具有很強的生存性，即自愈功能較強。 </p> <p> <br /> </p> <p> 網孔形網 </p> <p> <br /> </p> <p> 將所有網元節(jié)點兩兩相連，就形成了網孔形網絡。這種網絡拓撲為兩網元節(jié)點間提供多個傳輸路由，使網絡的可靠更強。但是由于系統(tǒng)的冗余度高，必會使系統(tǒng)有效性降低，成本高且結構復雜。 </p> <p> <br /> </p> <p> 當前用得**多的網絡拓撲是鏈形和環(huán)形，通過它們的靈活組合，可構成更加復雜的網絡。 </p></p><p><img src="https://tyunfile.71360.com/UploadFile/sztykc/637244845101689454/4175838.jpg" /></p><p>凈負荷區(qū)用于存放真正用于信息業(yè)務的比特和少量的用于通道維護管理的通道開銷字節(jié)；管理單元指針用來指示凈負荷區(qū)內的信息首字節(jié)在STM－N幀內的準確位置以便接收時能正確分離凈負荷。SDH的幀傳輸時按由左到右、由上到下的順序排成串型碼流依次傳輸，每幀傳輸時間為125μs，每秒傳輸1／125×1000000幀，對STM－1而言每幀字節(jié)為8bit×（9×270×1）=19440bit，則STM－1的傳輸速率為19440×8000=155.520Mbit／s；而STM－4的傳輸速率為4×155.520Mbit／s=622.080Mbit／s；STM－16的傳輸速率為16×155.520（或4×622.080）=2488.320Mbit／s。</p><p><img src="https://tyunfile.71360.com/UploadFile/sztykc/637244845101923829/7728521.jpg" /></p><p>深圳騰云科創(chuàng)信息咨詢有限公司，成立于2015年專業(yè)從事通信產品購銷以及施工，維護，產品維修，計算機系統(tǒng)集成施工。公司擁有專業(yè)的技術團隊，由廠家(中興通訊，華為技術，烽火通信)服務10年以上從業(yè)經驗的技術****，并有多名專業(yè)技術人員為您提供專業(yè)的商務技術和專業(yè)解決方案。公司主營中興通訊及華為技術各系列產品板件及整套設備的銷售與安裝，設備維護及板件返修，以及各設備可配置的單板，用戶電纜，中繼電纜等。公司業(yè)務涉及交通、金融、教育、衛(wèi)生、科研等系統(tǒng)已經建立了牢固的業(yè)務合作伙伴關系。積極面向市場為廣大行業(yè)用戶提供設計、安裝、調試、培訓、維護的“一條龍"服務。本公司以質量的服務、良好的信譽、雄厚的技術力量為廣大客戶提供質量服務。</p><div style="width:100%;text-align: center;"><img style="max-width: 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