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clearfix"><h1>重慶烽火千兆以太網(wǎng)出線卡深圳市騰云科創(chuàng)供應「深圳市騰云科創(chuàng)供應」</h1><div id="j3nurtv" class="proBig"><div id="tfmlcz7" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/sztykc/637244847797656250/1749392.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="3snxt8y" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/sztykc/637244847797656250/1749392.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="2wts2np" class="content"><p><span>需求數(shù)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(chǎn)品關鍵詞：</span>重慶烽火千兆以太網(wǎng)出線卡</p><p><span>***更新：</span>2020-06-19 16:31:22</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="zjl8wt3" 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(lián)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(wǎng)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="rvnrtcy" class="page-proshow02"><p class="title">詳細說明</p><div id="2jgd2u2" class="box"><p><p><p> <br /> </p> <p> SDH的特點 </p> <p> （1）由于SDH有多種網(wǎng)絡拓撲結構，它所組成的網(wǎng)絡非常靈活，它能增強網(wǎng)監(jiān)，運行管理和自動配置功能，優(yōu)化了網(wǎng)絡性能，同時也使網(wǎng)絡運行靈活、安全、可靠，使網(wǎng)絡的功能非常齊全和多樣化； </p> <p> （2）SDH有傳輸和交換的性能，它的系列設備的構成能通過功能塊的自由組合，實現(xiàn)了不同層次和各種拓撲結構的網(wǎng)絡，十分靈活； </p> <p> （3）SDH并不專屬于某種傳輸介質(zhì)，它可用于雙絞線、同軸電纜，但SDH用于傳輸高數(shù)據(jù)率則需用光纖。這一特點表明，SDH既適合用作干線通道，也可作支線通道。例如，我國的國家與省級有線電視干線網(wǎng)就是采用SDH，而且它也便于與光纖電纜混合網(wǎng)(HFC)相兼容。 </p> <p> （4）從OSI模型的觀點來看，SDH屬于其比較低層的物理層，并未對其高層有嚴格的限制，便于在SDH上采用各種網(wǎng)絡技術，支持ATM或IP傳輸； </p> <p> （5）SDH是嚴格同步的，從而保證了整個網(wǎng)絡穩(wěn)定可靠，誤碼少，且便于復用和調(diào)整； </p> <p> （6）標準的開放型光接口可以在基本光纜段上實現(xiàn)橫向兼容，降低了聯(lián)網(wǎng)成本。 </p> <p> <br /> </p> <p> <br /> </p></p><p><img src="https://tyunfile.71360.com/UploadFile/sztykc/637244847603603516/458709.jpg" /></p><p><p> <br /> </p> <p> SDH的特點 </p> <p> （1）由于SDH有多種網(wǎng)絡拓撲結構，它所組成的網(wǎng)絡非常靈活，它能增強網(wǎng)監(jiān)，運行管理和自動配置功能，優(yōu)化了網(wǎng)絡性能，同時也使網(wǎng)絡運行靈活、安全、可靠，使網(wǎng)絡的功能非常齊全和多樣化； </p> <p> （2）SDH有傳輸和交換的性能，它的系列設備的構成能通過功能塊的自由組合，實現(xiàn)了不同層次和各種拓撲結構的網(wǎng)絡，十分靈活； </p> <p> （3）SDH并不專屬于某種傳輸介質(zhì)，它可用于雙絞線、同軸電纜，但SDH用于傳輸高數(shù)據(jù)率則需用光纖。這一特點表明，SDH既適合用作干線通道，也可作支線通道。例如，我國的國家與省級有線電視干線網(wǎng)就是采用SDH，而且它也便于與光纖電纜混合網(wǎng)(HFC)相兼容。 </p> <p> （4）從OSI模型的觀點來看，SDH屬于其比較低層的物理層，并未對其高層有嚴格的限制，便于在SDH上采用各種網(wǎng)絡技術，支持ATM或IP傳輸； </p> <p> （5）SDH是嚴格同步的，從而保證了整個網(wǎng)絡穩(wěn)定可靠，誤碼少，且便于復用和調(diào)整； </p> <p> （6）標準的開放型光接口可以在基本光纜段上實現(xiàn)橫向兼容，降低了聯(lián)網(wǎng)成本。 </p> <p> <br /> </p> <p> <br /> </p></p><p><img src="https://tyunfile.71360.com/UploadFile/sztykc/637244847603603516/458709.jpg" /></p><p><p> 同步數(shù)字系列（Synchronous Digital Hierarchy，縮寫為SDH）是一種將復接、線路傳輸及交換功能融為一體、并由統(tǒng)一網(wǎng)管系統(tǒng)操作的綜合信息傳送網(wǎng)絡，是美國貝爾通信技術研究所提出來的同步光網(wǎng)絡（SONET）。國際電話電報咨詢**會（CCITT）（現(xiàn)ITU-T）于1988年接受了SONET 概念并重新命名為SDH，這使其成為不僅適用于光纖也適用于微波和衛(wèi)星傳輸?shù)耐ㄓ眉夹g體制。它可實現(xiàn)網(wǎng)絡有效管理、實時業(yè)務監(jiān)控、動態(tài)網(wǎng)絡維護、不同廠商設備間的互通等多項功能，能**提高網(wǎng)絡資源利用率、降低管理及維護費用、實現(xiàn)靈活可靠和***的網(wǎng)絡運行與維護。 </p> <p> <br /> </p></p><p><img src="https://tyunfile.71360.com/UploadFile/sztykc/637244847797656250/1749392.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(chǎn)品購銷以及施工，維護，產(chǎn)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(jīng)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(chǎn)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(jīng)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(diào)試、培訓、維護的“一條龍"服務。本公司以質(zhì)量的服務、良好的信譽、雄厚的技術力量為廣大客戶提供質(zhì)量服務。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶烽火千兆以太網(wǎng)出線卡" src="https://tyunfile.71360.com/UploadFile/sztykc/637244847797656250/1749392.jpg"></div></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/315615.html</p></div></div></div></div></div><div id="k3ur8xr" class="page-right twoColRt"><div id="qvx787o" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="8lsp2c8" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/814588.html"><div><img 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