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href="http://m.cdcfah.com/cp/third-txcp_jrsbtn/">接入設(shè)備</a>?青海SDH光端機(jī)烽火2路交換式千兆以太網(wǎng)處理板深圳市騰云科創(chuàng)供應(yīng)</p><div id="fv2enok" class="leftbox clearfix"><h1>青海SDH光端機(jī)烽火2路交換式千兆以太網(wǎng)處理板深圳市騰云科創(chuàng)供應(yīng)</h1><div id="mq8mb77" class="proBig"><div id="vikwy4w" 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="fov7mjv" 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="a7flsb7" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)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光端機(jī)烽火2路交換式千兆以太網(wǎng)處理板,烽火</p><p><span>***更新：</span>2020-09-13 06:08:26</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="a9segfb" 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(jī): </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(hào)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="solcev2" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="hnjlnuw" class="box"><p><p> SDH的產(chǎn)生背景 </p> <p> SDH技術(shù)的誕生有其必然性，隨著通信的發(fā)展，要求傳送的信息不*是話音，還有文字、數(shù)據(jù)、圖像，和視頻等。加之?dāng)?shù)字通信和計(jì)算機(jī)技術(shù)的發(fā)展，在70至80年代，陸續(xù)出現(xiàn)了T1(DS1)／E1載波系統(tǒng)(1.544／2.048Mbps)、X.25幀中繼、ISDN(綜合業(yè)務(wù)數(shù)字網(wǎng)) 和FDDI(光纖分布式數(shù)據(jù)接口)等多種網(wǎng)絡(luò)技術(shù)。隨著信息社會(huì)的到來，人們希望現(xiàn)代信息傳輸網(wǎng)絡(luò)能快速、經(jīng)濟(jì)、有效地提供各種電路和業(yè)務(wù)，青海SDH光端機(jī)烽火2路交換式千兆以太網(wǎng)處理板，而上述網(wǎng)絡(luò)技術(shù)由于其業(yè)務(wù)的單調(diào)性，擴(kuò)展的復(fù)雜性，青海SDH光端機(jī)烽火2路交換式千兆以太網(wǎng)處理板，青海SDH光端機(jī)烽火2路交換式千兆以太網(wǎng)處理板，帶寬的局限性，*在原有框架內(nèi)修改或完善已無濟(jì)于事。SDH就是在這種背景下發(fā)展起來的。由于幀周期的恒定使STM-N信號(hào)的速率有其規(guī)律性。青海SDH光端機(jī)烽火2路交換式千兆以太網(wǎng)處理板</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="青海SDH光端機(jī)烽火2路交換式千兆以太網(wǎng)處理板,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244847797656250/1749392.jpg"></div><p style="text-indent:25px">根據(jù)電力通信點(diǎn)多面廣, 可靠性要求高的特點(diǎn), 主干傳輸網(wǎng)可采用光纖自愈環(huán)的網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu), 也可以采用雙環(huán)相切、多環(huán)相切的主干網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu), 采用相切環(huán)時(shí)可在兩環(huán)相切的節(jié)點(diǎn)上采用雙環(huán)網(wǎng)元設(shè)備交叉保護(hù), 克服雙環(huán)相切時(shí)節(jié)點(diǎn)保護(hù)可靠性差的問題。支路可根據(jù)實(shí)際需要采用鏈形、星形、樹形等結(jié)構(gòu)。另外, 采用SDH 設(shè)備的光纖自愈環(huán)可實(shí)現(xiàn)多種形式的通道保護(hù), 而且SDH 光纖環(huán)有較強(qiáng)的自愈能力。所謂自愈就是指在網(wǎng)絡(luò)發(fā)生故障(例如光纖斷裂)時(shí), 無需人為干預(yù), 網(wǎng)絡(luò)能在極短的時(shí)間內(nèi)( ITU 2T規(guī)定為50ms 以內(nèi)) 自動(dòng)恢復(fù)傳輸, 使用戶幾乎感覺不到網(wǎng)絡(luò)出了故障。傳統(tǒng)的組網(wǎng)概念中, 提高傳輸設(shè)備利用率是**關(guān)鍵的, 為了增加線路的占空系數(shù), 在每個(gè)節(jié)點(diǎn)都建立了許多直接通道, 致使網(wǎng)絡(luò)結(jié)構(gòu)非常復(fù)雜。而利用SDH組網(wǎng), 使用SDH提供的豐富的開銷字節(jié), 就可以極大簡化網(wǎng)絡(luò)結(jié)構(gòu), 實(shí)現(xiàn)強(qiáng)大的OAM功能, 降低傳輸費(fèi)用并支持新業(yè)務(wù)的發(fā)展, 這正符合了現(xiàn)代通信發(fā)展的目標(biāo)。青海SDH光端機(jī)烽火2路交換式千兆以太網(wǎng)處理板為了實(shí)時(shí)監(jiān)測貨物（打包的低速信號(hào)）在傳輸過程中是否有損壞。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="青海SDH光端機(jī)烽火2路交換式千兆以太網(wǎng)處理板,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244847651777344/7289118.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(shí)能正確分離凈負(fù)荷。SDH的幀傳輸時(shí)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(shí)間為125μs，每秒傳輸1／125×1000000幀，對(duì)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網(wǎng)絡(luò)的常見網(wǎng)元和功能 </p> <p> REG——再生中繼器 </p> <p> 光傳輸網(wǎng)的再生中繼器有兩種，一種是純光的再生中繼器，主要進(jìn)行光功率放大以延長光傳輸距離；另一種是用于脈沖再生整形的電再生中繼器，主要通過光/電變換、電信號(hào)抽樣、判決、再生整形、電/光變換，以達(dá)到不積累線路噪聲，保證線路上傳送信號(hào)波形的完好性。此處講的是后一種再生中繼器，REG是雙端口器件，只有兩個(gè)線路端口——W、E。 </p> <p> 它的作用是將w/e側(cè)的光信號(hào)經(jīng)O/E、抽樣、判決、再生整形、E/O在e或w側(cè)發(fā)出。注意到?jīng)]有，REG與ADM相比*少了支路端口，所以ADM若本地不上/下話路（支路不上/下信號(hào)）時(shí)完全可以等效一個(gè)REG。 </p> <p> 真正的REG只需處理STM-N幀中的RSOH，且不需要交叉連接功能（w—e直通即可），而ADM和TM因?yàn)橐瓿蓪⒌退僦沸盘?hào)分/插到STM-N中，所以不*要處理RSOH，而且還要處理MSOH；另外ADM和TM都具有交叉復(fù)用能力（有交叉連接功能），因此用ADM來等效REG有點(diǎn)大材小用了。管理單元指針位于STM-N幀中第4行的***到第9×N列。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="青海SDH光端機(jī)烽火2路交換式千兆以太網(wǎng)處理板,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845105205079/5635847.jpg"></div><p> SDH的特點(diǎn) </p> <p> （1）由于SDH多種網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu)，它所組成的網(wǎng)絡(luò)非常靈活，它能增強(qiáng)網(wǎng)監(jiān)，運(yùn)行管理和自動(dòng)配置功能，優(yōu)化了網(wǎng)絡(luò)性能有，同時(shí)也使網(wǎng)絡(luò)運(yùn)行靈活、安全、可靠，使網(wǎng)絡(luò)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(shè)備的構(gòu)成能通過功能塊的自由組合，實(shí)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； </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(diǎn)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(jí)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(diǎn)來看，SDH屬于其比較低層的物理層，并未對(duì)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； </p> <p> （5）SDH是嚴(yán)格同步的，從而保證了整個(gè)網(wǎng)絡(luò)穩(wěn)定可靠，誤碼少，且便于復(fù)用和調(diào)整； </p> <p> （6）標(biāo)準(zhǔn)的開放型光接口 </p> <p> 可以在基本光纜段上實(shí)現(xiàn)橫向兼容，降低了聯(lián)網(wǎng)成本。這些系統(tǒng)的所有信息傳輸都必須由通信系統(tǒng)提供通道。廣西光傳輸設(shè)備價(jià)格烽火Citrans 550F</p><p style="text-indent:25px">電力通信要求確保電能的生產(chǎn)、輸送、分配、消費(fèi)在瞬間是同時(shí)完成的。青海SDH光端機(jī)烽火2路交換式千兆以太網(wǎng)處理板</p><p style="text-indent:25px">通信產(chǎn)品產(chǎn)業(yè)鏈持續(xù)分裂和結(jié)構(gòu)演變，設(shè)備提供商始終是移動(dòng)通信發(fā)展的基石?；乜催^去我國移動(dòng)通信業(yè)的發(fā)展，行業(yè)發(fā)生了天翻地覆的變化。為了追求更好的視覺效果和用戶體驗(yàn)，SDH光傳輸設(shè)備，光端機(jī)，PCM接入設(shè)備，PTN OTN光傳輸設(shè)備已經(jīng)成為當(dāng)下各大廠商競爭的焦點(diǎn)，也奠定了近幾年手機(jī)設(shè)計(jì)語言的基調(diào)。SDH光傳輸設(shè)備，光端機(jī)，PCM接入設(shè)備，PTN OTN光傳輸設(shè)備的引入，將在結(jié)構(gòu)設(shè)計(jì)、攝像頭、聽筒、天線設(shè)計(jì)、軟件UI、工藝設(shè)計(jì)、光距離傳感器等方面帶來手機(jī)設(shè)計(jì)的新變革。目前，國內(nèi)貿(mào)易型企業(yè)數(shù)量眾多。在這些通信網(wǎng)絡(luò)技術(shù)服務(wù)商中，中通服及旗下各省工程公司的總體規(guī)模和市場占比處于優(yōu)勢地位，設(shè)備制造商也占據(jù)一小部分市場占比?；A(chǔ)電信運(yùn)營商為應(yīng)對(duì)市場競爭并提升未來的競爭力，對(duì)貿(mào)易加入將不斷增加，以支撐持續(xù)穩(wěn)定增長的業(yè)務(wù)需求。通信業(yè)市場需求和加入規(guī)模的增長，將為通信技術(shù)服務(wù)行業(yè)開拓廣闊的市場空間。青海SDH光端機(jī)烽火2路交換式千兆以太網(wǎng)處理板</p><p style="text-indent:25px">深圳市騰云科創(chuàng)信息咨詢有限公司總部位于沙井街道蠔四社區(qū)街尾塘一巷5號(hào)幸福家園A棟、B棟、C棟、D棟D棟110D，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(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)、辦公設(shè)備、五金交電、化工原料（不含危險(xiǎn)及監(jiān)控化學(xué)品）的銷售；經(jīng)濟(jì)信息咨詢；經(jīng)營進(jìn)出口業(yè)務(wù)。的公司。騰云科創(chuàng)擁有一支經(jīng)驗(yàn)豐富、技術(shù)創(chuàng)新的專業(yè)研發(fā)團(tuán)隊(duì)，以高度的專注和執(zhí)著為客戶提供SDH光傳輸設(shè)備，光端機(jī)，PCM接入設(shè)備，PTN 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