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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(shè)備</a>?四川SDH光端機烽火NMU 深圳市騰云科創(chuàng)供應(yīng)</p><div id="i77xzbg" class="leftbox clearfix"><h1>四川SDH光端機烽火NMU 深圳市騰云科創(chuàng)供應(yīng)</h1><div id="wv7asu7" class="proBig"><div id="wfpw7sp" 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="irjg2mt" 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="2jkczby" 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>四川SDH光端機烽火NMU,烽火</p><p><span>***更新：</span>2021-01-27 06:06:58</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="q7s7cry" 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(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="y2ik772" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="8oq7hu2" class="box"><p><p> <span style="font-size:16px;font-family:"Microsoft YaHei";"> 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。</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";"> 根據(jù)公式：電流=功率／電壓，四川SDH光端機烽火NMU。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。</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";"> 時鐘同步系統(tǒng)</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">SDH網(wǎng)元時鐘源的種類</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">(1)外部時鐘源——由SETPI功能塊提供輸入接口；</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">(2)線路時鐘源一由SPI功能塊從STM．N線路信號中提??；</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">(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，因為SDH／PDH網(wǎng)邊界處的指針調(diào)整會影響時鐘質(zhì)量；</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">(4)設(shè)備內(nèi)置時鐘源由SETS功能塊提供。</span> </p> <p> <br /> </p> <p> <br /> 積極響應(yīng)配合客戶做好售后服務(wù)，四川SDH光端機烽火NMU，四川SDH光端機烽火NMU，在業(yè)界贏得廣大客戶認(rèn)可及一致好評。努力奉獻，您的滿意是我們一直的追求。四川SDH光端機烽火NMU</p> <span style="font-size:16px;font-family:"Microsoft YaHei";"></span><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川SDH光端機烽火NMU,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845102001954/2472236.jpg"></div><p> SDH的特點 </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，它能增強網(wǎng)監(jiān)，運行管理和自動配置功能，優(yōu)化了網(wǎng)絡(luò)性能有，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> <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(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模型的觀點來看，SDH屬于其比較低層的物理層，并未對其高層有嚴(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現(xiàn)橫向兼容，降低了聯(lián)網(wǎng)成本。湖北全新光傳輸設(shè)備烽火 E1板卡SDH的誕生解決了由于入戶媒質(zhì)的帶寬限制而跟不上骨干網(wǎng)和用戶業(yè)務(wù)需求的發(fā)展。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川SDH光端機烽火NMU,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845105205079/5635847.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(guān)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(wù)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(yán)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(shè)備, 如終端復(fù)用設(shè)備(TM )、再生器(REG)、分插復(fù)用設(shè)備(ADM )、數(shù)字交叉連接(DXC) 設(shè)備等, 通過光纜互連而成的, 由這些網(wǎng)元設(shè)備完成SDH 網(wǎng)的上下業(yè)務(wù)、交叉連接業(yè)務(wù)、網(wǎng)絡(luò)故障自愈等傳送功能。SDH網(wǎng)的網(wǎng)絡(luò)節(jié)點(網(wǎng)元) 和傳輸線路的幾何排列就構(gòu)成了網(wǎng)絡(luò)的拓?fù)浣Y(jié)構(gòu)。網(wǎng)絡(luò)的基本拓?fù)浣Y(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。 </p><p> SDH的主要設(shè)備 </p> <p> SDH設(shè)備是實現(xiàn)光同步傳輸網(wǎng)的重要物理手段。SDH設(shè)備只要有終端復(fù)用器（TM）、分插復(fù)用器（ADM）和書籍交叉連接設(shè)備（DXC）等。這些設(shè)備的功能不同，但都有統(tǒng)一的標(biāo)準(zhǔn)光接口，不同廠家的產(chǎn)品能夠?qū)崿F(xiàn)橫向兼容。 </p> <p> 深圳騰云科創(chuàng)信息咨詢有限公司，擁有專業(yè)的技術(shù)團隊，由 (中興通訊，華為技術(shù))服務(wù)10年以上從業(yè)經(jīng)驗的技術(shù)專家引導(dǎo)，并有多名專業(yè)技術(shù)人員為您提供專業(yè)的商務(wù)技術(shù)和專業(yè)解決方案。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，我司積極面向市場為廣大行業(yè)用戶提供設(shè)計、安裝、調(diào)試、培訓(xùn)、維護的“一條龍”***服務(wù)。環(huán)形網(wǎng)拓?fù)鋵嶋H上是指將鏈形拓?fù)涫孜蚕噙B。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川SDH光端機烽火NMU,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244847724550782/6753357.jpg"></div><p> <span style="font-size:16px;font-family:"Microsoft YaHei";">電力通信專門用途網(wǎng)的特點</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">隨著網(wǎng)絡(luò)傳輸技術(shù)的不斷發(fā)展, 電力系統(tǒng)中基于寬帶數(shù)據(jù)網(wǎng)的應(yīng)用也越來越多, 如圖像監(jiān)控、實時數(shù)據(jù)采集、實時控制、各種管理信息系統(tǒng)(MIS) 等,原先采用窄帶數(shù)據(jù)網(wǎng)承載的業(yè)務(wù)也逐步轉(zhuǎn)移到寬帶數(shù)據(jù)網(wǎng)上。除此之外, 電力通信專門用途網(wǎng)本身還具有一些特點:</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">(1) 電力通信網(wǎng)基本上應(yīng)以光纖通信為主, 以微波通信作備份或補充。</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">(2) 光纖網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu)復(fù)雜, 整個網(wǎng)絡(luò)節(jié)點數(shù)非常多, 需要傳輸設(shè)備有很強的組網(wǎng)和網(wǎng)絡(luò)管理能力,且對設(shè)備的可靠性要求非常高。</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">(3) 電力系統(tǒng)所敷設(shè)光纜通常芯數(shù)較少, 考慮到今后可能作為電信運營商, 應(yīng)盡量節(jié)約光纖通信系統(tǒng)所占用的光纖芯數(shù)。</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">(4) 為滿足整個電力部門目前和將來的所有通信需求, 需要做到話音、視頻和數(shù)據(jù)多網(wǎng)融合。</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">（5) 目前的業(yè)務(wù)接口需求主要有POTS、2W/4W、E&M、V.24、V.35、ISDN、E1、E3/T 3、10Mb/100Mb以太網(wǎng)接口等, 未來的業(yè)務(wù)需求大,多基于寬帶數(shù)據(jù)網(wǎng)。采用基于SDH 和MSTP, 可使調(diào)度網(wǎng)實現(xiàn)計算機網(wǎng)絡(luò)的遠程互聯(lián), 在SDH平臺上實現(xiàn)以太網(wǎng)業(yè)務(wù)傳送功能, 從而實現(xiàn)二網(wǎng)合一, 且極大地降低網(wǎng)絡(luò)建設(shè)成本。</span> 標(biāo)準(zhǔn)的開放型光接口可以在基本光纜段上實現(xiàn)橫向兼容，降低了聯(lián)網(wǎng)成本。甘肅銷售光傳輸設(shè)備烽火IBAS 180</p><p style="text-indent:25px">各種PDH支路信號復(fù)用進STM-N幀的過程都要經(jīng)歷映射、定位、復(fù)用三個步驟。四川SDH光端機烽火NMU</p><p> <span style="font-size:16px;font-family:"Microsoft YaHei";">STM-N的幀結(jié)構(gòu)由3部分組成：</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">1、信息凈負(fù)荷（payload）。</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">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。</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">為了實時監(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）進行通道性能監(jiān)視、管理和控制。</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">2、段開銷（SOH）</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">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)運行、管理和維護（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行監(jiān)控，當(dāng)然，SOH和POH還有一些其他管理功能。</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">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)的段層進行監(jiān)控，二者的區(qū)別在于監(jiān)管的范圍不同。</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">3、管理單元指針（AU-PTR）</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">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。</span> 四川SDH光端機烽火NMU</p><p style="text-indent:25px">深圳市騰云科創(chuàng)信息咨詢有限公司位于沙井街道蠔四社區(qū)街尾塘一巷5號幸福家園A棟、B棟、C棟、D棟D棟110D。公司自成立以來，以質(zhì)量為發(fā)展，讓匠心彌散在每個細(xì)節(jié)，公司旗下SDH光傳輸設(shè)備，光端機，PCM接入設(shè)備，PTN OTN光傳輸設(shè)備深受客戶的喜愛。公司從事通信產(chǎn)品多年，有著創(chuàng)新的設(shè)計、強大的技術(shù)，還有一批獨立的專業(yè)化的隊伍，確保為客戶提供良好的產(chǎn)品及服務(wù)。騰云科創(chuàng)秉承“客戶為尊、服務(wù)為榮、創(chuàng)意為先、技術(shù)為實”的經(jīng)營理念，全力打造公司的重點競爭力。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3031203.html</p></div></div></div></div></div><div id="hl8qxeq" class="page-right twoColRt"><div id="ixzjaho" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ynfcegn" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="ku83hzb" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img src="https://tyunfile.71360.com/WaterMark/UploadFile/nbzxsw/637298235378037109/764794.png" 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