青海SDH光傳輸設(shè)備烽火CONT 深圳市騰云科創(chuàng)供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="基本的網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu)SDH網(wǎng)是由SDH網(wǎng)元設(shè)備通過光纜互連而成的，網(wǎng)絡(luò)節(jié)點設(shè)備（網(wǎng)元）和傳輸線路的幾何排列就構(gòu)成了網(wǎng)絡(luò)的拓?fù)浣Y(jié)構(gòu)。網(wǎng)絡(luò)的有效性、可靠性和經(jīng)濟(jì)性在很大程度上與其拓?fù)浣Y(jié)構(gòu)有關(guān)。網(wǎng)絡(luò)拓?fù)涞幕窘Y(jié)構(gòu)有鏈形、星形、樹形、環(huán)形和網(wǎng)孔形。鏈"><meta name="keywords" content="青海SDH光傳輸設(shè)備烽火CONT,烽火"><link rel="canonical" href="http://m.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" 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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>?青海SDH光傳輸設(shè)備烽火CONT 深圳市騰云科創(chuàng)供應(yīng)</p><div id="h23puol" class="leftbox clearfix"><h1>青海SDH光傳輸設(shè)備烽火CONT 深圳市騰云科創(chuàng)供應(yīng)</h1><div id="hg3lacz" class="proBig"><div id="xqifhev" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/sztykc/637244845103808594/6520524.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="f2cr8rj" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/sztykc/637244845103808594/6520524.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="fz88p2p" 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>青海SDH光傳輸設(shè)備烽火CONT,烽火</p><p><span>***更新：</span>2020-09-23 16:15:26</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="buwdvse" 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="88spmoq" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="kjb7wvn" class="box"><p><p> 基本的網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu) </p> <p> SDH網(wǎng)是由SDH網(wǎng)元設(shè)備通過光纜互連而成的，網(wǎng)絡(luò)節(jié)點設(shè)備（網(wǎng)元）和傳輸線路的幾何排列就構(gòu)成了網(wǎng)絡(luò)的拓?fù)浣Y(jié)構(gòu)。網(wǎng)絡(luò)的有效性、可靠性和經(jīng)濟(jì)性在很大程度上與其拓?fù)浣Y(jié)構(gòu)有關(guān)。 </p> <p> 網(wǎng)絡(luò)拓?fù)涞幕窘Y(jié)構(gòu)有鏈形、星形、樹形、環(huán)形和網(wǎng)孔形。 </p> <p> 鏈形網(wǎng) </p> <p> 鏈形網(wǎng)絡(luò)拓?fù)涫菍⒕W(wǎng)中的所有節(jié)點一一串聯(lián)，而首尾兩端開放。這種拓?fù)涞奶攸c是較經(jīng)濟(jì)，青海SDH光傳輸設(shè)備烽火CONT，青海SDH光傳輸設(shè)備烽火CONT，在SDH網(wǎng)的早期用得較多，主要用于專網(wǎng)如鐵路網(wǎng)中。 </p> <p> 星形網(wǎng) </p> <p> 星形網(wǎng)絡(luò)拓?fù)涫菍⒕W(wǎng)中一網(wǎng)元做為中心節(jié)點設(shè)備與其他各網(wǎng)元節(jié)點相連，其他各網(wǎng)元節(jié)點之間互不相連，青海SDH光傳輸設(shè)備烽火CONT，網(wǎng)元節(jié)點的業(yè)務(wù)都要經(jīng)過這個特殊節(jié)點轉(zhuǎn)接。 </p> <p> <br /> </p> <p> <br /> 網(wǎng)絡(luò)的有效性、可靠性和經(jīng)濟(jì)性在很大程度上與其拓?fù)浣Y(jié)構(gòu)有關(guān)。青海SDH光傳輸設(shè)備烽火CONT</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="青海SDH光傳輸設(shè)備烽火CONT,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845103808594/6520524.jpg"></div><p> SDH的復(fù)用包括兩種情況： </p> <p> 1、由STM-1信號復(fù)用成STM-N信號 </p> <p> 復(fù)用的方法主要通過字節(jié)間插的同步復(fù)用方式來完成的，復(fù)用的基數(shù)是4，即4×STM-1→STM-4，4×STM-4→STM-16。在復(fù)用過程中保持幀頻不變（8000幀/秒），這就意味著高一級的STM-N信號是低一級的STM-n信號速率的4倍。 </p> <p> 在進(jìn)行字節(jié)間插復(fù)用過程中，各幀的信息凈負(fù)荷和指針字節(jié)按原值進(jìn)行字節(jié)間插復(fù)用，而STM-N的段開銷并不是由所有低階STM-N幀中的段開銷間插復(fù)用而成，而是舍棄了某些低階幀中的段開銷。 </p> <p> 2、由PDH支路信號復(fù)用成STM-N信號 </p> <p> 各種PDH支路信號復(fù)用進(jìn)STM-N幀的過程都要經(jīng)歷映射、定位、復(fù)用三個步驟。映射相當(dāng)于信號打包，定位伴隨與指針調(diào)整，復(fù)用相當(dāng)于字節(jié)間插復(fù)用。ITU-T規(guī)定了一整套完整的映射復(fù)用結(jié)構(gòu)，也就是映射復(fù)用路線，通過這些路線可將PDH的3個系列的數(shù)字信號以多種方法復(fù)用成STM-N信號。 </p> <p> 復(fù)用結(jié)構(gòu)包括了一些基本的復(fù)用單元：C－容器、VC－虛容器、TU－支路單元、TUG－支路單元組、AU－管理單元、AUG－管理單元組，這些復(fù)用單元的下標(biāo)表示與此復(fù)用單元相應(yīng)的信號級別。 </p> <p> 從一個有效負(fù)荷到STM-N的復(fù)用路線不是***的，有多條路線（也就是說有多種復(fù)用方法），8Mbit/s的PDH支路信號是無法復(fù)用成STM-N信號的。 </p> <p> <br /> 云南SDH光端機烽火ASON 780A樹形網(wǎng)絡(luò)拓?fù)淇煽闯墒擎溞瓮負(fù)浜托切瓮負(fù)涞慕Y(jié)合。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="青海SDH光傳輸設(shè)備烽火CONT,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244847603603516/458709.jpg"></div><p style="text-indent:25px">凈負(fù)荷區(qū)用于存放真正用于信息業(yè)務(wù)的比特和少量的用于通道維護(hù)管理的通道開銷字節(jié)；管理單元指針用來指示凈負(fù)荷區(qū)內(nèi)的信息首字節(jié)在STM－N幀內(nèi)的準(zhǔn)確位置以便接收時能正確分離凈負(fù)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> SDH的概念 </p> <p> SDH[1]（Synchronous Digital Hierarchy，同步數(shù)字系列）光端機容量較大，一般是16E1到4032E1。 SDH是一種將復(fù)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(luò)，是美國貝爾通信技術(shù)研究所提出來的同步光網(wǎng)絡(luò)（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，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(shù)體制。它可實現(xiàn)網(wǎng)絡(luò)有效管理、實時業(yè)務(wù)監(jiān)控、動態(tài)網(wǎng)絡(luò)維護(hù)、不同廠商設(shè)備間的互通等多項功能，能**提高網(wǎng)絡(luò)資源利用率、降低管理及維護(hù)費用、實現(xiàn)靈活可靠和***的網(wǎng)絡(luò)運行與維護(hù)，因此是當(dāng)今世界信息領(lǐng)域在傳輸技術(shù)方面的發(fā)展和應(yīng)用的熱點，受到人們的***重視。 </p> <p> <br /> 在各種寬帶光纖接入網(wǎng)技術(shù)中，采用SDH技術(shù)的接入網(wǎng)系統(tǒng)是應(yīng)用**普遍的。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="青海SDH光傳輸設(shè)備烽火CONT,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845102001954/2472236.jpg"></div><p> SDH的主要設(shè)備 </p> <p> SDH設(shè)備是實現(xiàn)光同步傳輸網(wǎng)的重要物理手段。SDH設(shè)備只要有終端復(fù)用器（TM）、分插復(fù)用器（ADM）和書籍交叉連接設(shè)備（DXC）等。這些設(shè)備的功能不同，但都有統(tǒng)一的標(biāo)準(zhǔn)光接口，不同廠家的產(chǎn)品能夠?qū)崿F(xiàn)橫向兼容。 </p> <p> 深圳騰云科創(chuàng)信息咨詢有限公司，擁有專業(yè)的技術(shù)團(tuán)隊，由 (中興通訊，華為技術(shù))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ZXMP系列產(chǎn)品：ZXMP S200｜ZXMP S320｜ZXMP S330｜ZXMP S325｜ZXMP S385｜ZXMP S390整機及各型號單板。華為Metro系列產(chǎn)品：Metro1000｜Metro2050｜Metro3000｜Optix2500+｜Metro5000整機及各型號單板。華為OSN系列產(chǎn)品：OSN1500B｜OSN2000｜OSN2500｜OSN3500｜OSN7500整機及各型號單板。烽火IBAS系列產(chǎn)品： IBAS780A｜IBAS780B， PCM綜合接入設(shè)備介紹：FA16接入設(shè)備｜BX10接入設(shè)備，我司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)。在進(jìn)行字節(jié)間插復(fù)用過程中，各幀的信息凈負(fù)荷和指針字節(jié)按原值進(jìn)行字節(jié)間插復(fù)用。云南SDH光端機烽火STM-1</p><p style="text-indent:25px">SDH是數(shù)字傳輸體制上繼PDH之后的一次劃時代的飛躍。青海SDH光傳輸設(shè)備烽火CONT</p><p style="text-indent:25px">SDH網(wǎng)絡(luò)是整個數(shù)字網(wǎng)的一部分，它的定時基準(zhǔn)應(yīng)是這個數(shù)字網(wǎng)的統(tǒng)一的定時基準(zhǔn)。時鐘同步，就是使通信網(wǎng)內(nèi)所有節(jié)點的時鐘頻率和相位都控制在預(yù)先確定的容差范圍內(nèi)，確保網(wǎng)內(nèi)各傳輸或交換節(jié)點的全部數(shù)字流正確有效地傳輸或交換，時鐘不同步，會在緩沖器中產(chǎn)生信息比特的溢出或取空，導(dǎo)致數(shù)字流的滑動損傷，造成數(shù)據(jù)出錯，影響正常運行。電流差動保護(hù)的關(guān)鍵是線路兩側(cè)保護(hù)之間的電流數(shù)據(jù)交換，當(dāng)復(fù)接數(shù)字通信設(shè)備時，同步時鐘的提取方式是一個非常重要的問題。本期新增節(jié)點均從線路側(cè)提取同步信號。青海SDH光傳輸設(shè)備烽火CONT</p><p style="text-indent:25px">深圳市騰云科創(chuàng)信息咨詢有限公司致力于通信產(chǎn)品，是一家貿(mào)易型的公司。公司業(yè)務(wù)分為SDH光傳輸設(shè)備，光端機，PCM接入設(shè)備，PTN OTN光傳輸設(shè)備等，目前不斷進(jìn)行創(chuàng)新和服務(wù)改進(jìn)，為客戶提供良好的產(chǎn)品和服務(wù)。公司秉持誠信為本的經(jīng)營理念，在通信產(chǎn)品深耕多年，以技術(shù)為先導(dǎo)，以自主產(chǎn)品為重點，發(fā)揮人才優(yōu)勢，打造通信產(chǎn)品良好品牌。騰云科創(chuàng)憑借創(chuàng)新的產(chǎn)品、專業(yè)的服務(wù)、眾多的成功案例積累起來的聲譽和口碑，讓企業(yè)發(fā)展再上新高。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/1392876.html</p></div></div></div></div></div><div id="8wjacof" class="page-right twoColRt"><div 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