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clearfix"><div id="gvszbsz" class="twoCol"><div id="zhjqsj7" class="page-proshow clearfix"><p class="current"> 當前位置:<a href="http://m.cdcfah.com/">首頁?<a 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>?潮州烽火10/100M自適應(yīng)以太網(wǎng)板卡深圳市騰云科創(chuàng)供應(yīng)</p><div id="8egtk2e" class="leftbox clearfix"><h1>潮州烽火10/100M自適應(yīng)以太網(wǎng)板卡深圳市騰云科創(chuàng)供應(yīng)</h1><div id="7ta7fcj" class="proBig"><div id="2o7yqsu" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/sztykc/637244845102001954/2472236.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="7i2sels" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/sztykc/637244845102001954/2472236.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="zmy22bg" 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>潮州烽火10/100M自適應(yīng)以太網(wǎng)板卡,烽火</p><p><span>***更新：</span>2020-08-27 22:16:37</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="nmewt2r" 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="2s7mzpg" class="page-proshow02"><p class="title">詳細說明</p><div id="onkxe72" class="box"><p><p> SDH的缺點， </p> <p> 1，頻帶利用率低。 </p> <p> 可靠性和有效性是矛盾的，增加了有效性必將降低可靠性，增加了可靠性也會相應(yīng)的使有效性降低。例如，收音機的選擇性增加，可選的電臺就增多，這樣就提高了選擇性。但是，由于這時頻帶相應(yīng)的會變窄，必然會使音質(zhì)下降，也就降低了可靠性。 </p> <p> 2，潮州烽火10/100M自適應(yīng)以太網(wǎng)板卡，指針調(diào)整機理復雜。 </p> <p> SDH體制可以從高速信號（STM-1）中直接下低速信號（例如2Mbit/s），省去了多級復用，解復用過程，這種功能的實現(xiàn)是通過指針機理來完成的，潮州烽火10/100M自適應(yīng)以太網(wǎng)板卡。但是，指針功能的實現(xiàn)增加了系統(tǒng)的復雜性。**重要的是系統(tǒng)產(chǎn)生SDH的一種特有抖動—由指針調(diào)整引起的結(jié)合抖動。 </p> <p> 3，軟件的大量使用對系統(tǒng)的安全性的影響。 </p> <p> 在***無處不在的***，軟件的的大量使用，很容易受到***的破壞，加上人為操作，軟件故障，對系統(tǒng)的影響也是致命的，潮州烽火10/100M自適應(yīng)以太網(wǎng)板卡。 </p> <p> <br /> ADM是SDH**重要的一種網(wǎng)元，通過它可等效成其它網(wǎng)元。潮州烽火10/100M自適應(yīng)以太網(wǎng)板卡</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="潮州烽火10/100M自適應(yīng)以太網(wǎng)板卡,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845102001954/2472236.jpg"></div><p style="text-indent:25px">凈負荷區(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(nèi)的信息首字節(jié)在STM－N幀內(nèi)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。茂名烽火550F同時也使網(wǎng)絡(luò)運行靈活、安全、可靠，使網(wǎng)絡(luò)的功能非常齊全和多樣化；</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="潮州烽火10/100M自適應(yīng)以太網(wǎng)板卡,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845103808594/6520524.jpg"></div><p> STM-N信號幀結(jié)構(gòu)的安排應(yīng)盡可能使支路低速信號在一幀內(nèi)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(jié)構(gòu)。 </p> <p> STM-N的信號是9行×270×N列的幀結(jié)構(gòu)。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(jié)構(gòu)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(shù)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?shù)哪兀?STM-N信號的傳輸也遵循按比特的傳輸方式，SDH信號幀傳輸?shù)脑瓌t是：按幀結(jié)構(gòu)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> 網(wǎng)管系統(tǒng)的傳輸通道由D1，D12開銷字節(jié)提供，網(wǎng)絡(luò)單元之間采用DCC通道， </p> <p> DCC通道終端在被連接的每個設(shè)備上，在相同的管理區(qū)域內(nèi)，通過以太網(wǎng)連接。例如某地市目前*有l(wèi)套網(wǎng)管系統(tǒng)。利用現(xiàn)有的網(wǎng)管設(shè)備，將新增網(wǎng)元納入到現(xiàn)有網(wǎng)管系統(tǒng)中，統(tǒng)一進行管理。一套OTNM 2000**多可管理756個等效標準網(wǎng)元，現(xiàn)有的網(wǎng)管系統(tǒng)有足夠的能力管理包括本期新增的所有網(wǎng)元。網(wǎng)管管理能力是一套網(wǎng)管在保證規(guī)定性能指標的情況下所能管理的比較大等效網(wǎng)元數(shù)。 </p> <p> 深圳騰云科創(chuàng)信息咨詢有限公司主營中興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)備由于采用了較先進的分插復用器（ADM）、數(shù)字交叉連接（DXC）。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="潮州烽火10/100M自適應(yīng)以太網(wǎng)板卡,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845101923829/7728521.jpg"></div><p> 隨著科學技術(shù)的不斷發(fā)展,各行各業(yè)為了滿足自身內(nèi)部的需求，將會建設(shè)更多，更復雜的**網(wǎng)絡(luò)，這些網(wǎng)絡(luò)必將承擔更多的任務(wù)。 </p> <p> 對于大多數(shù)專網(wǎng)，在目前的技術(shù)條件下，則應(yīng)利用公眾網(wǎng)實現(xiàn)企業(yè)或?qū)I(yè)部門的通信需求。利用公眾網(wǎng)滿足專業(yè)部門的需求具有各種不同的方式。如租用公眾網(wǎng)的光芯或傳輸容量，配置自己的交換設(shè)備。這就免除了**困難的光纜輔設(shè)工程，比較適用于具有大規(guī)模用戶的企業(yè)。又如委托公眾網(wǎng)**為本企業(yè)或部門使用的虛擬**網(wǎng)，它所提供的功能和容量完全按照用戶的要求進行，這就免除了全部的投資風險和維護工作，應(yīng)用機動靈活，使用部門可以專心致力于其本行業(yè)的業(yè)務(wù)工作。 </p> <p> <br /> 在進行字節(jié)間插復用過程中，各幀的信息凈負荷和指針字節(jié)按原值進行字節(jié)間插復用。中山烽火10/100M自適應(yīng)以太網(wǎng)板卡</p><p style="text-indent:25px">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。潮州烽火10/100M自適應(yīng)以太網(wǎng)板卡</p><p> SDH的特點 </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)字傳輸標準速率和標準的光路接口，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)字傳輸體制標準，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)凈負荷區(qū)內(nèi)的排列非常有規(guī)律，而凈負荷與網(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)了一次復用的特性，克服了PDH準同步復用方式對全部高速信號進行逐級分解然后再生復用的過程，由于**簡化了DXC，減少了背靠背的接口復用設(shè)備，改善了網(wǎng)絡(luò)的業(yè)務(wù)傳送透明性； </p> <p> （3）由于采用了較先進的分插復用器（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；潮州烽火10/100M自適應(yīng)以太網(wǎng)板卡</p><p style="text-indent:25px">深圳市騰云科創(chuàng)信息咨詢有限公司是一家電力設(shè)備、電子元器件、電子產(chǎn)品、建筑材料、通信設(shè)備(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)、辦公設(shè)備、五金交電、化工原料（不含危險及監(jiān)控化學品）的銷售；經(jīng)濟信息咨詢；經(jīng)營進出口業(yè)務(wù)。的公司，創(chuàng)建于2015-10-29。公司自2015-10-29成立以來，投身于SDH光傳輸設(shè)備，光端機，PCM接入設(shè)備，PTN OTN光傳輸設(shè)備，是通信產(chǎn)品的主力軍。騰云科創(chuàng)不斷開拓創(chuàng)新，追求***，以技術(shù)為先導，以產(chǎn)品為平臺，以應(yīng)用為**，以服務(wù)為保障，不斷為客戶創(chuàng)造更高價值，提供更優(yōu)服務(wù)。騰云科創(chuàng)始終關(guān)注自身，在風云變化的時代，我們對自身的建設(shè)毫不懈怠，高度的專注與執(zhí)著使我們在行業(yè)的從容而自信。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/1064112.html</p></div></div></div></div></div><div id="bj2lhip" class="page-right twoColRt"><div id="eynzwiu" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ti7a3uq" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" 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