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href="http://m.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://m.cdcfah.com/cp/second-_txcp/">通信產(chǎn)品</a>?<a href="http://m.cdcfah.com/cp/third-txcp_jrsbtn/">接入設(shè)備</a>?陜西光傳輸設(shè)備中興深圳市騰云科創(chuàng)供應(yīng)「深圳市騰云科創(chuàng)供應(yīng)」</p><div id="wfw8dq8" class="leftbox clearfix"><h1>陜西光傳輸設(shè)備中興深圳市騰云科創(chuàng)供應(yīng)「深圳市騰云科創(chuàng)供應(yīng)」</h1><div id="cg3mov2" class="proBig"><div id="y7nkhe3" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/sztykc/637236134617080078/4939103.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="xg9qnkh" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/sztykc/637236134617080078/4939103.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="sb9ahof" 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(guān)鍵詞：</span>陜西光傳輸設(shè)備中興</p><p><span>***更新：</span>2020-07-31 02:02:02</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="hfzamy3" 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(dāng)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="2f78nam" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="rqkwi88" class="box"><p><p>SDH有傳輸和交換的性能，它的系列設(shè)備的構(gòu)成能通過功能塊的自由組合，實現(xiàn)了不同層次和各種拓?fù)浣Y(jié)構(gòu)的網(wǎng)絡(luò)，十分靈活；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。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(yán)格的限制，便于在SDH上采用各種網(wǎng)絡(luò)技術(shù)，支持ATM或IP傳輸；SDH是嚴(yán)格同步的，從而保證了整個網(wǎng)絡(luò)穩(wěn)定可靠，誤碼少，且便于復(fù)用和調(diào)整；標(biāo)準(zhǔn)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。中興SDH光傳輸設(shè)備，光端機。認(rèn)準(zhǔn)深圳市騰云科創(chuàng)信息咨詢有限公司</p><p><img src="https://tyunfile.71360.com/UploadFile/sztykc/637236134617646485/6729208.jpg" /></p><p><p> SDH是數(shù)字傳輸體制上繼PDH之后的一次劃時代的飛躍。SDH之所以能夠快速發(fā)展這是與它自身的特點是分不開的，其具體特點如下： </p> <p> （1）SDH傳輸系統(tǒng)在國際上有統(tǒng)一的幀結(jié)構(gòu)，數(shù)字傳輸標(biāo)準(zhǔn)速率和標(biāo)準(zhǔn)的光路接口，使網(wǎng)管系統(tǒng)互通，因此有很好的橫向兼容性，它能與現(xiàn)有的PDH完全兼容，并容納各種新的業(yè)務(wù)信號，形成了全球統(tǒng)一的數(shù)字傳輸體制標(biāo)準(zhǔn)，提高了網(wǎng)絡(luò)的可靠性； </p> <p> （2）SDH接入系統(tǒng)的不同等級的碼流在幀結(jié)構(gòu)凈負(fù)荷區(qū)內(nèi)的排列非常有規(guī)律，而凈負(fù)荷與網(wǎng)絡(luò)是同步的，它利用軟件能將高速信號一次直接分插出低速支路信號，實現(xiàn)了一次復(fù)用的特性，克服了PDH準(zhǔn)同步復(fù)用方式對全部高速信號進(jìn)行逐級分解然后再生復(fù)用的過程，由于**簡化了DXC，減少了背靠背的接口復(fù)用設(shè)備，改善了網(wǎng)絡(luò)的業(yè)務(wù)傳送透明性； </p> <p> （3）由于采用了較先進(jìn)的分插復(fù)用器（ADM）、數(shù)字交叉連接（DXC）、網(wǎng)絡(luò)的自愈功能和重組功能就顯得非常強大，具有較強的生存率。因SDH幀結(jié)構(gòu)中安排了信號的5％開銷比特，它的網(wǎng)管功能顯得特別強大，并能統(tǒng)一形成網(wǎng)絡(luò)管理系統(tǒng)，為網(wǎng)絡(luò)的自動化、智能化、信道的利用率以及降低網(wǎng)絡(luò)的維管費和生存能力起到了積極作用；中興SDH光傳輸設(shè)備，光端機。認(rèn)準(zhǔn)深圳市騰云科創(chuàng)信息咨詢有限公司 </p> <p> <br /> </p></p><p><img src="https://tyunfile.71360.com/UploadFile/sztykc/637236134616210938/7753962.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(hù)，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(shù)團隊，由廠家(中興通訊，華為技術(shù)，烽火通信)服務(wù)10年以上從業(yè)經(jīng)驗的技術(shù)****，并有多名專業(yè)技術(shù)人員為您提供專業(yè)的商務(wù)技術(shù)和專業(yè)解決方案。公司主營中興通訊及華為技術(shù)各系列產(chǎn)品板件及整套設(shè)備的銷售與安裝，設(shè)備維護(hù)及板件返修，以及各設(shè)備可配置的單板，用戶電纜，中繼電纜等。公司業(yè)務(wù)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(wù)合作伙伴關(guān)系。積極面向市場為廣大行業(yè)用戶提供設(shè)計、安裝、調(diào)試、培訓(xùn)、維護(hù)的“一條龍"服務(wù)。本公司以質(zhì)量的服務(wù)、良好的信譽、雄厚的技術(shù)力量為廣大客戶提供質(zhì)量服務(wù)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="陜西光傳輸設(shè)備中興" src="https://tyunfile.71360.com/UploadFile/sztykc/637236134617080078/4939103.jpg"></div></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/757280.html</p></div></div></div></div></div><div id="3keq3f3" class="page-right twoColRt"><div id="trq8xul" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="gfhjdel" 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