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class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/sztykc/637244845101689454/4175838.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="thj7wt3" 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>云南全新光傳輸設(shè)備烽火Citrans 550F,烽火</p><p><span>***更新：</span>2021-01-14 06:08:44</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="d2hr3ce" 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="7mz7v79" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="n7wiamj" class="box"><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，只有兩個線路端口——W、E。 </p> <p> 它的作用是將w/e側(cè)的光信號經(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，云南全新光傳輸設(shè)備烽火Citrans 550F，所以ADM若本地不上/下話路（支路不上/下信號）時完全可以等效一個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），云南全新光傳輸設(shè)備烽火Citrans 550F，而ADM和TM因?yàn)橐瓿蓪⒌退僦沸盘柗?插到STM-N中，所以不*要處理RSOH，云南全新光傳輸設(shè)備烽火Citrans 550F，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。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。云南全新光傳輸設(shè)備烽火Citrans 550F</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="云南全新光傳輸設(shè)備烽火Citrans 550F,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845101689454/4175838.jpg"></div><p style="text-indent:25px">它可實(shí)現(xiàn)網(wǎng)絡(luò)有效管理、實(shí)時業(yè)務(wù)監(jiān)控、動態(tài)網(wǎng)絡(luò)維護(hù)、不同廠商設(shè)備間的互通等多項(xiàng)功能，能**提高網(wǎng)絡(luò)資源利用率、降低管理及維護(hù)費(fèi)用、實(shí)現(xiàn)靈活可靠和***的網(wǎng)絡(luò)運(yùn)行與維護(hù)，因此是當(dāng)今世界信息領(lǐng)域在傳輸技術(shù)方面的發(fā)展和應(yīng)用的熱點(diǎn)，受到人們的***重視。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(jī)及各型號單板。華為Metro系列產(chǎn)品：Metro1000｜Metro2050｜Metro3000｜Optix2500+｜Metro5000整機(jī)及各型號單板。華為OSN系列產(chǎn)品：OSN1500B｜OSN2000｜OSN2500｜OSN3500｜OSN7500整機(jī)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)備寧夏光傳輸設(shè)備SDH烽火ASON 780A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="云南全新光傳輸設(shè)備烽火Citrans 550F,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244847797656250/1749392.jpg"></div><p> SDH的缺點(diǎn)， </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(jī)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，指針調(diào)整機(jī)理復(fù)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(fù)用，解復(fù)用過程，這種功能的實(shí)現(xiàn)是通過指針機(jī)理來完成的。但是，指針功能的實(shí)現(xiàn)增加了系統(tǒng)的復(fù)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。 </p> <p> <br /> </p><p style="text-indent:25px">1.近年來，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。SDH技術(shù)與一些先進(jìn)技術(shù)相結(jié)合，如光波分復(fù)用（WDM）、ATM技術(shù)、Internet技術(shù)（IP over SDH）等，使SDH網(wǎng)絡(luò)的作用越來越大。SDH已被各國列入21世紀(jì)高速通信網(wǎng)的應(yīng)用項(xiàng)目，是電信界公認(rèn)的數(shù)字傳輸網(wǎng)的發(fā)展方向，具有遠(yuǎn)大的商用前景。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，維護(hù)，產(chǎn)品維修，計(jì)算機(jī)系統(tǒng)集成施工。為客戶提供質(zhì)量產(chǎn)品、完善的解決方案，積極響應(yīng)配合客戶做好售后服務(wù)，在業(yè)界贏得廣大客戶認(rèn)可及一致好評。努力奉獻(xiàn)，您的滿意是我們一直的追求。ADM是SDH**重要的一種網(wǎng)元，通過它可等效成其它網(wǎng)元。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="云南全新光傳輸設(shè)備烽火Citrans 550F,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845105000000/3722756.jpg"></div><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?？偟膩碚f，低成本、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 /> 網(wǎng)絡(luò)的有效性、可靠性和經(jīng)濟(jì)性在很大程度上與其拓?fù)浣Y(jié)構(gòu)有關(guān)。云南全新光傳輸設(shè)備烽火Citrans 550F</p><p style="text-indent:25px">維護(hù)，產(chǎn)品維修，計(jì)算機(jī)系統(tǒng)集成施工。為客戶提供質(zhì)量產(chǎn)品、完善的解決方案。云南全新光傳輸設(shè)備烽火Citrans 550F</p><p> SDH的應(yīng)用 </p> <p> 由于以上所述的SDH的眾多特性，使其在廣域網(wǎng)領(lǐng)域和專門用途網(wǎng)領(lǐng)域得到了巨大的發(fā)展。中國移動、電信、聯(lián)通、廣電等電信運(yùn)營商都已經(jīng)大規(guī)模建設(shè)了基于SDH的骨干光傳輸網(wǎng)絡(luò)。利用大容量的SDH環(huán)路承載IP業(yè)務(wù)、ATM業(yè)務(wù)或直接以租用電路的方式出租給企、事業(yè)單位。而一些大型的專門用途網(wǎng)絡(luò)也采用了SDH技術(shù)，架設(shè)系統(tǒng)內(nèi)部的SDH光環(huán)路，以承載各種業(yè)務(wù)。比如電力系統(tǒng)，就利用SDH環(huán)路承載內(nèi)部的數(shù)據(jù)、遠(yuǎn)控、視頻、語音等業(yè)務(wù)。 </p> <p> 而對于組網(wǎng)更加迫切、而又沒有可能架設(shè)專門用途SDH環(huán)路的單位，很多都采用了租用電信運(yùn)營商電路的方式。由于SDH基于物理層的特點(diǎn)，單位可在租用電路上承載各種業(yè)務(wù)而不受傳輸?shù)南拗?。承載方式有很多種，可以是利用基于TDM技術(shù)的綜合復(fù)用設(shè)備實(shí)現(xiàn)多業(yè)務(wù)的復(fù)用，也可以利用基于IP的設(shè)備實(shí)現(xiàn)多業(yè)務(wù)的分組交換。SDH技術(shù)可真正實(shí)現(xiàn)租用電路的帶寬保證，安全性方面也優(yōu)于VPN等方式。在和對安全性非常注重的企業(yè)，SDH租用線路得到了***的應(yīng)用。一般來說，SDH可提供E1、E3、STM-1或STM-4等接口，完全可以滿足各種帶寬要求。同時在價格方面，也已經(jīng)為大部分單位所接受。云南全新光傳輸設(shè)備烽火Citrans 550F</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。公司業(yè)務(wù)涵蓋SDH光傳輸設(shè)備，光端機(jī)，PCM接入設(shè)備，PTN OTN光傳輸設(shè)備等，價格合理，品質(zhì)有保證。公司秉持誠信為本的經(jīng)營理念，在通信產(chǎn)品深耕多年，以技術(shù)為先導(dǎo)，以自主產(chǎn)品為重點(diǎn)，發(fā)揮人才優(yōu)勢，打造通信產(chǎn)品良好品牌。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(shí)”的經(jīng)營理念，全力打造公司的重點(diǎn)競爭力。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2839411.html</p></div></div></div></div></div><div id="zlxrd7w" class="page-right twoColRt"><div id="nroldpr" class="box01 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