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href="http://www.cdcfah.com/zh/"><span>展會信息</span></a></li></ul></div></nav><section class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="iyqipwd" class="twoCol"><div id="s8lwo7i" class="page-proshow clearfix"><p class="current"> 當前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應</a>?<a href="http://www.cdcfah.com/cp/second-_txcp/">通信產(chǎn)品</a>?<a href="http://www.cdcfah.com/cp/third-txcp_jrsbtn/">接入設備</a>?甘肅光端機烽火STM-16 深圳市騰云科創(chuàng)供應</p><div id="rdvmo2u" class="leftbox clearfix"><h1>甘肅光端機烽火STM-16 深圳市騰云科創(chuàng)供應</h1><div id="yhjgykw" class="proBig"><div id="poq3wvv" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/sztykc/637244845101689454/9165528.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="32dfc2a" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/sztykc/637244845101689454/9165528.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="sbnphym" 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)品關鍵詞：</span>甘肅光端機烽火STM-16,烽火</p><p><span>***更新：</span>2021-01-25 07:06:13</p><p><span id="click" >瀏覽次數(shù)：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="3qc2w7b" 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="et3npb7" class="page-proshow02"><p class="title">詳細說明</p><div id="sgdkhoi" class="box"><p><p style="text-indent:25px"><span style="font-size:16px;font-family:"Microsoft YaHei";"> </span><span style="font-size:16px;font-family:"Microsoft YaHei";">SDH網(wǎng)絡是整個數(shù)字網(wǎng)的一部分，它的定時基準應是這個數(shù)字網(wǎng)的統(tǒng)一的定時基準。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。電流差動保護的關鍵是線路兩側(cè)保護之間的電流數(shù)據(jù)交換，甘肅光端機烽火STM-16，當復接數(shù)字通信設備時，甘肅光端機烽火STM-16，甘肅光端機烽火STM-16，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。</span>它能增強網(wǎng)監(jiān)，運行管理和自動配置功能，優(yōu)化了網(wǎng)絡性能。甘肅光端機烽火STM-16</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="甘肅光端機烽火STM-16,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845101689454/9165528.jpg"></div><p> 電力網(wǎng)的發(fā)展對電力系統(tǒng)專門用途通信網(wǎng)提出了更高的要求, 電力通信要求確保電能的生產(chǎn)、輸送、分配、消費在瞬間是同時完成的。為了保證電網(wǎng)安全、經(jīng)濟地運行, 必須配置調(diào)度、保護、遠程控制等系統(tǒng)。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。由此可見, 通信在電力系統(tǒng)中的作用是非常關鍵的。隨著經(jīng)濟的發(fā)展, 電力系統(tǒng)容量急劇增加, 隨之而來的是輸電超高壓化, 接入業(yè)務多樣化。 </p> <p> 電力系統(tǒng)一旦發(fā)生故障, 如果通信不暢, 不能及時調(diào)度指揮,就會擴大范圍, 造成大面積停電甚至系統(tǒng)瓦解,不但經(jīng)濟損失十分慘重, 而且會給社會造成嚴重影響。因此電力系統(tǒng)的通信要有非常高的可靠性。由于SDH技術(shù)具有特有的優(yōu)勢, 采用SDH技術(shù)組網(wǎng)不但適合現(xiàn)代通信發(fā)展的需要,而且特別適合電力系統(tǒng)通信的需要。SDH網(wǎng)是由不同類型的SDH網(wǎng)元設備, 如終端復用設備(TM )、再生器(REG)、分插復用設備(ADM )、數(shù)字交叉連接(DXC) 設備等, 通過光纜互連而成的, 由這些網(wǎng)元設備完成SDH 網(wǎng)的上下業(yè)務、交叉連接業(yè)務、網(wǎng)絡故障自愈等傳送功能。SDH網(wǎng)的網(wǎng)絡節(jié)點(網(wǎng)元) 和傳輸線路的幾何排列就構(gòu)成了網(wǎng)絡的拓撲結(jié)構(gòu)。網(wǎng)絡的基本拓撲結(jié)構(gòu)大致有這樣幾種方式: 鏈形、星形、樹形、環(huán)形和網(wǎng)格形等。貴州SDH設備烽火8路帶交換功能快速以太網(wǎng)處理板SDH傳輸網(wǎng)是由不同類型的網(wǎng)元通過光纜線路的連接組成的。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="甘肅光端機烽火STM-16,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845101689454/4175838.jpg"></div><p> <span style="font-size:16px;font-family:"Microsoft YaHei";">SDH的基本傳輸原理：</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";"> SDH采用的信息結(jié)構(gòu)等級稱為同步傳送模塊STM－N（Synchronous Transport，N=1，4， 16，64），比較基本的模塊為STM－1，四個STM－1同步復用構(gòu)成STM－4，16個STM－1或四個 STM－4同步復用構(gòu)成STM－16；SDH采用塊狀的幀結(jié)構(gòu)來承載信息，每幀由縱向9行和橫向 270×N列字節(jié)組成，每個字節(jié)含8bit，整個幀結(jié)構(gòu)分成段開銷（Section OverHead，SOH）區(qū)、STM－N凈負荷區(qū)和管理單元指針（AU PTR）區(qū)三個區(qū)域，其中段開銷區(qū)主要用于網(wǎng)絡的運行、管理、維護及指配以保證信息能夠正常靈活地傳送，它又分為再生段開銷和復用段開銷。</span> </p><p> <span style="font-size:16px;font-family:"Microsoft YaHei";">電力通信專門用途網(wǎng)的構(gòu)建思路：</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">電力通信網(wǎng)可以在樞紐節(jié)點、大型變電站、行政中心采用標準的STM 21、STM 24 或STM 216 傳輸設備疊加接入模塊的方式; 在中小型變電站、鄉(xiāng)鎮(zhèn)供電所等業(yè)務量較少的節(jié)點采用單獨簡單配置的STM-21網(wǎng)元設備組網(wǎng)或STM-21網(wǎng)元設備疊加接入模塊的方式; 接入模塊解決話音、V. 24/V. 35、2W/4W、E&M 等窄帶業(yè)務接入, 而10Mb/s、100Mb/s等寬帶數(shù)據(jù)接入則在SDH傳輸平臺上提供,這樣能夠充分保證帶寬和服務質(zhì)量(QoS)。環(huán)網(wǎng)光纜建設綜合考慮通信、計算機網(wǎng)絡及有線電視傳輸?shù)男枰?采用不等芯數(shù)配置, 做到既滿足要求, 又節(jié)省投資?？紤]到全網(wǎng)的性能價格比, 比較好采用系列化較完整的產(chǎn)品, 對不同節(jié)點選用不同配置的網(wǎng)元設備, 并能進行統(tǒng)一網(wǎng)管, 以實現(xiàn)有效的分層管理, 便于故障快速定位, 從而有效減輕維護工作量。隨著網(wǎng)絡規(guī)模的擴大, 應實現(xiàn)多廠家的設備管理, 要求網(wǎng)管支持標準接口, 即網(wǎng)管系統(tǒng)具備開放性。</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">通過基于SDH 的MSTP, 可支持全業(yè)務, 局域網(wǎng)互聯(lián)帶寬可按VC212×N (1～ 48) 平滑設置, 可利用SDH 層的網(wǎng)絡自愈功能實現(xiàn)電信級的保護, 統(tǒng)一的網(wǎng)管方便網(wǎng)絡維護。它完善地解決所有業(yè)務信號的接入和傳輸, 且相對于其它的組網(wǎng)方式具有其明顯的優(yōu)勢。</span> 由于SDH有多種網(wǎng)絡拓撲結(jié)構(gòu)，它所組成的網(wǎng)絡非常靈活。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="甘肅光端機烽火STM-16,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244847797656250/1749392.jpg"></div><p style="text-indent:25px"><span style="font-size:16px;font-family:"Microsoft YaHei";"> 根據(jù)電力通信點多面廣, 可靠性要求高的特點, 主干傳輸網(wǎng)可采用光纖自愈環(huán)的網(wǎng)絡拓撲結(jié)構(gòu), 也可以采用雙環(huán)相切、多環(huán)相切的主干網(wǎng)絡拓撲結(jié)構(gòu), 采用相切環(huán)時可在兩環(huán)相切的節(jié)點上采用雙環(huán)網(wǎng)元設備交叉保護, 克服雙環(huán)相切時節(jié)點保護可靠性差的問題。支路可根據(jù)實際需要采用鏈形、星形、樹形等結(jié)構(gòu)。另外, 采用SDH 設備的光纖自愈環(huán)可實現(xiàn)多種形式的通道保護, 而且SDH 光纖環(huán)有較強的自愈能力。所謂自愈就是指在網(wǎng)絡發(fā)生故障(例如光纖斷裂)時, 無需人為干預, 網(wǎng)絡能在極短的時間內(nèi)( ITU 2T規(guī)定為50ms 以內(nèi)) 自動恢復傳輸, 使用戶幾乎感覺不到網(wǎng)絡出了故障。傳統(tǒng)的組網(wǎng)概念中, 提高傳輸設備利用率是比較關鍵的, 為了增加線路的占空系數(shù), 在每個節(jié)點都建立了許多直接通道, 致使網(wǎng)絡結(jié)構(gòu)非常復雜。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)絡結(jié)構(gòu), 實現(xiàn)強大的OAM功能, 降低傳輸費用并支持新業(yè)務的發(fā)展, 這正符合了現(xiàn)代通信發(fā)展的目標。</span>主要進行光功率放大以延長光傳輸距離；貴州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，成立于2015年專業(yè)從事通信產(chǎn)品購銷以及施工。甘肅光端機烽火STM-16</p><p style="text-indent:25px">凈負荷區(qū)用于存放真正用于信息業(yè)務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。甘肅光端機烽火STM-16</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，以科技創(chuàng)新實現(xiàn)***管理的追求。騰云科創(chuàng)擁有一支經(jīng)驗豐富、技術(shù)創(chuàng)新的專業(yè)研發(fā)團隊，以高度的專注和執(zhí)著為客戶提供SDH光傳輸設備，光端機，PCM接入設備，PTN OTN光傳輸設備。騰云科創(chuàng)不斷開拓創(chuàng)新，追求出色，以技術(shù)為先導，以產(chǎn)品為平臺，以應用為重點，以服務為保證，不斷為客戶創(chuàng)造更高價值，提供更優(yōu)服務。騰云科創(chuàng)始終關注通信產(chǎn)品行業(yè)。滿足市場需求，提高產(chǎn)品價值，是我們前行的力量。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3002034.html</p></div></div></div></div></div><div id="dxzwyfr" class="page-right twoColRt"><div id="8kwyf8h" class="box01 margin10 clearfix"><h3><a 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