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src="https://tyunfile.71360.com/UploadFile/sztykc/637244845101923829/7728521.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="xl7npb8" 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>寧夏光傳輸設備價格烽火 E1板卡,烽火</p><p><span>***更新：</span>2020-08-13 11:46:22</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="aegtaho" 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="3cmdzld" class="page-proshow02"><p class="title">詳細說明</p><div id="3f3b73f" class="box"><p><p> 傳輸網上的業(yè)務按流向可分為單向業(yè)務和雙向業(yè)務。以環(huán)網為例說明單向業(yè)務和雙向業(yè)務的區(qū)別。 </p> <p> <br /> </p> <p> 若A和C之間互通業(yè)務，A到C的業(yè)務路由假定是A→B→C，若此時C到A的業(yè)務路由是C→B→A，則業(yè)務從A到C和從C到A的路由相同，稱為一致路由。 </p> <p> 若此時C到A的路由是C→D→A，那么業(yè)務從A到C和業(yè)務從C到A的路由不同，稱為分離路由。 </p> <p> 我們稱一致路由的業(yè)務為雙向業(yè)務，分離路由的業(yè)務為單向業(yè)務。常見組網的業(yè)務方向和路由。 </p> <p> 深圳市騰云科創(chuàng)信息咨詢有限公司以質量的服務、良好的信譽、雄厚的技術力量為廣大客戶提供質量服務。我司供應中興ZXMP系列產品：ZXMP S200｜ZXMP S320｜ZXMP S330｜ZXMP S325｜ZXMP S385｜ZXMP S390整機及各型號單板，寧夏光傳輸設備價格烽火 E1板卡，寧夏光傳輸設備價格烽火 E1板卡。供應華為Metro系列產品：Metro1000｜Metro2050｜Metro3000｜Optix2500+｜Metro5000整機及各型號單板，寧夏光傳輸設備價格烽火 E1板卡。供應華為OSN系列產品：OSN1500B｜OSN2000｜OSN2500｜OSN3500｜OSN7500整機及各型號單板。供應烽火IBAS系列產品： IBAS780A｜IBAS780B供應PCM綜合接入設備：FA16接入設備｜BX10接入設備。努力奉獻，您的滿意是我們一直的追求！它的作用是將支路端口的低速信號復用到線路端口的高速信號STM-N中。寧夏光傳輸設備價格烽火 E1板卡</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="寧夏光傳輸設備價格烽火 E1板卡,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845101923829/7728521.jpg"></div><p> 深圳騰云科創(chuàng)信息咨詢有限公司主營中興ZXMP系列產品：ZXMP S200｜ZXMP S320｜ZXMP S330｜ZXMP S325｜ZXMP S385｜ZXMP S390整機及各型號單板。華為Metro系列產品：Metro1000｜Metro2050｜Metro3000｜Optix2500+｜Metro5000整機及各型號單板。華為OSN系列產品：OSN1500B｜OSN2000｜OSN2500｜OSN3500｜OSN7500整機及各型號單板。烽火IBAS系列產品： IBAS780A｜IBAS780B， PCM綜合接入設備介紹：FA16接入設備｜BX10接入設備 </p> <p> <br /> 寧夏光傳輸設備價格烽火 E1板卡為了保證電網安全、經濟地運行, 必須配置調度、保護、遠程控制等系統(tǒng)。</p> 以太網業(yè)務的接入和傳送應用,支持端口捆綁( IEEE802. 3ad) 和生成樹算法( IEEE802.1D) , 支持VLAN ( IEEE802. 1Q ) 和QoS ( IEEE802.1p ) , 可以直接提供10Mb/100Mb自適應以太網接口, 通過內置2 層、3 層以太網交換機實現統(tǒng)計復用, 并且支持VC212 虛級聯, 帶寬從1～ 48 個2M b平滑設置。<div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="寧夏光傳輸設備價格烽火 E1板卡,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845105000000/3722756.jpg"></div><p> STM-N信號幀結構的安排應盡可能使支路低速信號在一幀內均勻、有規(guī)律的分布，以便于從高速信號中直接上/下低速支路信號。因此，ITU-T規(guī)定了STM-N的幀是以字節(jié)為單位的矩形塊狀結構。 </p> <p> STM-N的信號是9行×270×N列的幀結構。此處的N與STM-N的N相一致，取值范圍：1，4，16，64……。表示此信號由N個STM-1 信號通過字節(jié)間插復用而成。由此可知，STM-1信號的幀結構是9行×270列的塊狀幀。并且，當N個STM-1信號通過字節(jié)間插復用成STM-N信號時，**是將STM-1信號的列按字節(jié)間插復用，行數恒定為9行不變。 </p> <p> 我們知道，信號在線路上串行傳輸時是逐個比特（bit）地進行的，那么這個塊狀幀是怎樣在線路上進行傳輸的呢？ STM-N信號的傳輸也遵循按比特的傳輸方式，SDH信號幀傳輸的原則是：按幀結構的順序從左到右，從上到下逐個字節(jié)，并且逐個比特地傳輸，傳完一行再傳下一行，傳完一幀再傳下一幀。 </p> <p> <br /> </p><p> <br /> </p> <p> SDH的特點 </p> <p> （1）由于SDH有多種網絡拓撲結構，它所組成的網絡非常靈活，它能增強網監(jiān)，運行管理和自動配置功能，優(yōu)化了網絡性能，同時也使網絡運行靈活、安全、可靠，使網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，實現了不同層次和各種拓撲結構的網絡，十分靈活； </p> <p> （3）SDH并不專屬于某種傳輸介質，它可用于雙絞線、同軸電纜，但SDH用于傳輸高數據率則需用光纖。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就是采用SDH，而且它也便于與光纖電纜混合網(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，從而保證了整個網絡穩(wěn)定可靠，誤碼少，且便于復用和調整； </p> <p> （6）標準的開放型光接口可以在基本光纜段上實現橫向兼容，降低了聯網成本。 </p> <p> <br /> </p> <p> <br /> 段，相當于一條大的傳輸通道。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="寧夏光傳輸設備價格烽火 E1板卡,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845101689454/4175838.jpg"></div><p style="text-indent:25px">1.近年來，SDH作為新一代理想的傳輸體系，具有路由自動選擇能力，上下電路方便，維護、控制、管理功能強，標準統(tǒng)一，便于傳輸更高速率的業(yè)務等優(yōu)點，能很好地適應通信網飛速發(fā)展的需要。SDH技術與一些先進技術相結合，如光波分復用（WDM）、ATM技術、Internet技術（IP over SDH）等，使SDH網絡的作用越來越大。SDH已被各國列入21世紀高速通信網的應用項目，是電信界公認的數字傳輸網的發(fā)展方向，具有遠大的商用前景。深圳市騰云科創(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。為客戶提供質量產品、完善的解決方案，積極響應配合客戶做好售后服務，在業(yè)界贏得廣大客戶認可及一致好評。努力奉獻，您的滿意是我們一直的追求。樹形網絡拓撲可看成是鏈形拓撲和星形拓撲的結合。寧夏光傳輸設備價格烽火 E1板卡</p><p style="text-indent:25px">隨著網絡傳輸技術的不斷發(fā)展, 電力系統(tǒng)中基于寬帶數據網的應用也越來越多。寧夏光傳輸設備價格烽火 E1板卡</p><p> SDH的應用 </p> <p> 由于以上所述的SDH的眾多特性，使其在廣域網領域和**網領域得到了巨大的發(fā)展。中國移動、電信、聯通、廣電等電信運營商都已經大規(guī)模建設了基于SDH的骨干光傳輸網絡。利用大容量的SDH環(huán)路承載IP業(yè)務、ATM業(yè)務或直接以租用電路的方式出租給企、事業(yè)單位。而一些大型的**網絡也采用了SDH技術，架設系統(tǒng)內部的SDH光環(huán)路，以承載各種業(yè)務。比如電力系統(tǒng)，就利用SDH環(huán)路承載內部的數據、遠控、視頻、語音等業(yè)務。 </p> <p> 而對于組網更加迫切、而又沒有可能架設**SDH環(huán)路的單位，很多都采用了租用電信運營商電路的方式。由于SDH基于物理層的特點，單位可在租用電路上承載各種業(yè)務而不受傳輸的限制。承載方式有很多種，可以是利用基于TDM技術的綜合復用設備實現多業(yè)務的復用，也可以利用基于IP的設備實現多業(yè)務的分組交換。SDH技術可真正實現租用電路的帶寬保證，安全性方面也優(yōu)于VPN等方式。在****和對安全性非常注重的企業(yè)，SDH租用線路得到了***的應用。一般來說，SDH可提供E1、E3、STM-1或STM-4等接口，完全可以滿足各種帶寬要求。同時在價格方面，也已經為大部分單位所接受。寧夏光傳輸設備價格烽火 E1板卡</p><p style="text-indent:25px">深圳市騰云科創(chuàng)信息咨詢有限公司注冊資金100-200萬元，是一家擁有5人以下***員工的企業(yè)。公司業(yè)務分為[ "SDH光傳輸設備", "光端機", "PCM接入設備", "PTN OTN光傳輸設備" ]等，目前不斷進行創(chuàng)新和服務改進，為客戶提供質量的產品和服務。公司將不斷增強企業(yè)核心競爭力，努力學習行業(yè)先進知識，遵守行業(yè)規(guī)范，植根于通信產品行業(yè)的發(fā)展。公司自成立以來發(fā)展迅速，業(yè)務不斷發(fā)展壯大，年營業(yè)額度達到50-100萬元，未來我們將不斷進行創(chuàng)新和改進，讓企業(yè)發(fā)展再上新高。</p></p><br /><p>文章來源地址: 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