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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>?湖南全新光傳輸設(shè)備烽火CKU 深圳市騰云科創(chuàng)供應(yīng)</p><div id="qzwyah7" class="leftbox clearfix"><h1>湖南全新光傳輸設(shè)備烽火CKU 深圳市騰云科創(chuàng)供應(yīng)</h1><div id="2s7cuh3" class="proBig"><div id="0ikczgi" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/sztykc/637244847651777344/7289118.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="xroqnzw" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/sztykc/637244847651777344/7289118.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="sli3n8w" 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>湖南全新光傳輸設(shè)備烽火CKU,烽火</p><p><span>***更新：</span>2020-08-09 19:07:03</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="oro4s9b" 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="ao8yvxe" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="8asholn" class="box"><p><p> <p> <p> 從技術(shù)上來看，接入層的相對帶寬需求較小，需要提供IP、TDM，可能還有ATM等綜合業(yè)務(wù)傳送。以SDH 系統(tǒng)為基礎(chǔ)并能夠提供IP 、ATM 傳送與處理的系統(tǒng)（包括TDM、IP與ATM接口，甚至包括IP 和ATM 交換模塊）將是解決接入層傳送的主要方法，這種方式可廉價(jià)地在一個業(yè)務(wù)提供點(diǎn)（POP）上提供高質(zhì)量專線、ATM 、IP 等業(yè)務(wù)的接入、傳送和保護(hù)。 </p> <p> 隨著骨干傳輸容量不斷增大，城域傳輸網(wǎng)絡(luò)的接入能力也多樣化。但以IP為主的網(wǎng)絡(luò)業(yè)務(wù)仍然是不可預(yù)知的，這需要傳輸網(wǎng)絡(luò)具有更好的自適應(yīng)能力，而這種自適應(yīng)能力不**是網(wǎng)絡(luò)接口或網(wǎng)絡(luò)容量的適應(yīng)能力，而且要求網(wǎng)絡(luò)連接的自適應(yīng)能力，湖南全新光傳輸設(shè)備烽火CKU?？偟膩碚f，湖南全新光傳輸設(shè)備烽火CKU，低成本，湖南全新光傳輸設(shè)備烽火CKU、靈活快速的完成運(yùn)營商端局到用戶端的業(yè)務(wù)接入和業(yè)務(wù)收斂是對未來城域網(wǎng)接入系統(tǒng)的主要需求。 </p> </p> <p> <br /> </p> </p> <p> <br /> 終端復(fù)用器用在網(wǎng)絡(luò)的終端站點(diǎn)上。湖南全新光傳輸設(shè)備烽火CKU</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖南全新光傳輸設(shè)備烽火CKU,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244847651777344/7289118.jpg"></div><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(diǎn)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(diǎn)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(yùn)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(diǎn)均從線路側(cè)提取同步信號。貴州全新光傳輸設(shè)備烽火PEOW標(biāo)準(zhǔn)的開放型光接口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。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖南全新光傳輸設(shè)備烽火CKU,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845101923829/7728521.jpg"></div><p> SDH的發(fā)展趨勢 </p> <p> 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(hù)、控制、管理功能強(qiáng)，標(biāo)準(zhǔn)統(tǒng)一，便于傳輸更高速率的業(yè)務(wù)等優(yōu)點(diǎn)，能很好地適應(yīng)通信網(wǎng)飛速發(fā)展的需要。迄今，SDH得到了空前的應(yīng)用與發(fā)展。在標(biāo)準(zhǔn)化方面，已建立和即將建立的一系列建議已基本上覆蓋了SDH的方方面面。在干線網(wǎng)和長途網(wǎng)、中繼網(wǎng)、接入網(wǎng)中它開始廣泛應(yīng)用。且在光纖通信、微波通信、衛(wèi)星通信中也積極地開展研究與應(yīng)用。 </p> <p> <p> 近些年，點(diǎn)播電視、多媒體業(yè)務(wù)和其他寬帶業(yè)務(wù)如雨后春筍般紛紛出現(xiàn)，為SDH應(yīng)用在接入網(wǎng)中提供了廣闊的空間。SDH技術(shù)應(yīng)用于接入網(wǎng)的好處是：1）對于要求高可靠、高質(zhì)量業(yè)務(wù)的大型企事業(yè)用戶，SDH可以提供較為理想的網(wǎng)絡(luò)性能和業(yè)務(wù)可靠性。2）可以將網(wǎng)管范圍擴(kuò)展至用戶端，簡化維護(hù)工作。3）利用SDH固有靈活性，可使網(wǎng)絡(luò)運(yùn)營者更快、更有效地提供用戶所需的長期和短期業(yè)務(wù)需求。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> </p><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(fù)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(dāng)N個STM-1信號通過字節(jié)間插復(fù)用成STM-N信號時，**是將STM-1信號的列按字節(jié)間插復(fù)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(jìn)行的，那么這個塊狀幀是怎樣在線路上進(jìn)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 /> 為了保證電網(wǎng)安全、經(jīng)濟(jì)地運(yùn)行, 必須配置調(diào)度、保護(hù)、遠(yuǎn)程控制等系統(tǒng)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖南全新光傳輸設(shè)備烽火CKU,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845103378907/6385040.jpg"></div><p> 電源系統(tǒng)SDH設(shè)備采用一48伏直流電源，工作電壓應(yīng)滿足：輸入電壓范圍是-40V至-57V；電話衡量雜音電壓<2mV；峰峰值雜音電壓(0．300Hz)_<400mV。 </p> <p> 根據(jù)公式：電流=功率／電壓。各設(shè)備正常工作時的比較大電流等于滿配置功耗除以工作電壓。比較大電流再加上適當(dāng)富余量取整可得所需熔絲大小。 </p> <p> 時鐘同步系統(tǒng) </p> <p> SDH網(wǎng)元時鐘源的種類 </p> <p> (1)外部時鐘源——由SETPI功能塊提供輸入接口； </p> <p> (2)線路時鐘源一由SPI功能塊從STM．N線路信號中提??； </p> <p> (3)支路時鐘源——由PPI功能塊從PDH支路信號中提取，不過該時鐘一般不用，因?yàn)镾DH／PDH網(wǎng)邊界處的指針調(diào)整會影響時鐘質(zhì)量； </p> <p> (4)設(shè)備內(nèi)置時鐘源由SETS功能塊提供。 </p> <p> <br /> 主要進(jìn)行光功率放大以延長光傳輸距離；寧夏光端機(jī)烽火千兆以太網(wǎng)出線卡</p><p style="text-indent:25px">這種網(wǎng)絡(luò)拓?fù)錇閮删W(wǎng)元節(jié)點(diǎn)間提供多個傳輸路由，使網(wǎng)絡(luò)的可靠更強(qiáng)。湖南全新光傳輸設(shè)備烽火CKU</p><p> STM-N的幀結(jié)構(gòu)由3部分組成： </p> <p> 1、信息凈負(fù)荷（payload）。 </p> <p> 信息凈負(fù)荷位于STM-N幀中第1到第9行，第9×N+1到第270×N列，共9×261×N個字節(jié)。信息凈負(fù)荷是在STM-N幀結(jié)構(gòu)中存放將由STM-N傳送的各種用戶信息碼塊的地方。 </p> <p> 為了實(shí)時監(jiān)測貨物（打包的低速信號）在傳輸過程中是否有損壞，在將低速信號打包的過程中加入了通道開銷（POH）字節(jié)。POH作為凈負(fù)荷的一部分與信息碼塊一起裝載在STM-N這輛貨車上在SDH網(wǎng)中傳送，它負(fù)責(zé)對打包的貨物（低速信號）進(jìn)行通道性能監(jiān)視、管理和控制。 </p> <p> 2、段開銷（SOH） </p> <p> 段，相當(dāng)于一條大的傳輸通道，段開銷是為了保證信息凈負(fù)荷正常傳送所必須附加的網(wǎng)絡(luò)運(yùn)行、管理和維護(hù)（OAM）字節(jié)。也就是說SOH完成對貨物整體的監(jiān)控，POH是完成對某一件特定的貨物進(jìn)行監(jiān)控，當(dāng)然，SOH和POH還有一些其他管理功能。 </p> <p> 段開銷又分為再生段開銷（RSOH）和復(fù)用段開銷（MSOH），可分別對相應(yīng)的段層進(jìn)行監(jiān)控，二者的區(qū)別在于監(jiān)管的范圍不同。 </p> <p> 3、管理單元指針（AU-PTR） </p> <p> 管理單元指針位于STM-N幀中第4行的***到第9×N列，共9×N個字節(jié)。AU-PTR是用來指示信息凈負(fù)荷的***個字節(jié)在STM-N幀內(nèi)的準(zhǔn)確位置的指示符，以便接收端能根據(jù)這個位置指示符的值（指針值）準(zhǔn)確分離信息凈負(fù)荷。湖南全新光傳輸設(shè)備烽火CKU</p><p style="text-indent:25px">深圳市騰云科創(chuàng)信息咨詢有限公司坐落沙井街道蠔四社區(qū)街尾塘一巷5號幸福家園A棟、B棟、C棟、D棟D棟110D，交通便利，環(huán)境優(yōu)美，是一家貿(mào)易型企業(yè)。騰云科創(chuàng)是一家有限責(zé)任公司企業(yè)，一直貫徹“以人為本，服務(wù)于社會”的經(jīng)營理念;“優(yōu)質(zhì)高速，誠守信譽(yù)，持續(xù)發(fā)展”的質(zhì)量方針。公司始終堅(jiān)持客戶需求第一的原則，致力于提供高質(zhì)量的[ "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" ]。騰云科創(chuàng)將以真誠的服務(wù)、創(chuàng)新的理念、高品質(zhì)的產(chǎn)品，為彼此贏得全新的未來！</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/862296.html</p></div></div></div></div></div><div id="dm3ikwi" class="page-right twoColRt"><div id="wv87igi" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="fpmg3rh" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/814588.html"><div><img 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