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class="home-main container clearfix"><div id="chjgyxe" class="twoCol"><div id="lahzbik" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁(yè)?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</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(shè)備</a>?四川烽火NMU 深圳市騰云科創(chuàng)供應(yīng)「深圳市騰云科創(chuàng)供應(yīng)」</p><div id="gl8byam" class="leftbox clearfix"><h1>四川烽火NMU 深圳市騰云科創(chuàng)供應(yīng)「深圳市騰云科創(chuàng)供應(yīng)」</h1><div id="lv2nk7z" class="proBig"><div id="o3wifmj" 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="lf7s2xe" 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="o2dfh2c" 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>四川烽火NMU</p><p><span>***更新：</span>2020-08-12 00:41:38</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="cmtlnzb" 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="f238dqn" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="pjgdvh3" class="box"><p><p><p> <p> <p> 從技術(shù)上來(lái)看，接入層的相對(duì)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(gè)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?lái)說(shuō)，低成本、靈活快速的完成運(yùn)營(yíng)商端局到用戶端的業(yè)務(wù)接入和業(yè)務(wù)收斂是對(duì)未來(lái)城域網(wǎng)接入系統(tǒng)的主要需求。 </p> </p> <p> <br /> </p> </p> <p> <br /> </p></p><p><img src="https://tyunfile.71360.com/UploadFile/sztykc/637244847797656250/1749392.jpg" /></p><p><p> 環(huán)網(wǎng)——自愈環(huán) </p> <p> 自愈環(huán)的分類 </p> <p> 目前環(huán)形網(wǎng)絡(luò)的拓?fù)浣Y(jié)構(gòu)用得很多，因?yàn)榄h(huán)形網(wǎng)具有較強(qiáng)的自愈功能。自愈環(huán)的分類可按保護(hù)的業(yè)務(wù)級(jí)別、環(huán)上業(yè)務(wù)的方向、網(wǎng)元節(jié)點(diǎn)間光纖數(shù)等來(lái)劃分。 </p> <p> 按環(huán)上業(yè)務(wù)的方向可將自愈環(huán)分為單向環(huán)和雙向環(huán)兩大類；按網(wǎng)元節(jié)點(diǎn)間的光纖數(shù)可將自愈環(huán)劃分為兩纖環(huán)（一對(duì)收/發(fā)光纖）和四纖環(huán)（兩對(duì)收發(fā)光纖）；按保護(hù)方式還可將自愈環(huán)劃分為通道保護(hù)環(huán)和復(fù)用段保護(hù)環(huán)兩大類。 </p> <p> 對(duì)于通道保護(hù)環(huán)，業(yè)務(wù)的保護(hù)是以通道為基礎(chǔ)的，也就是保護(hù)的是STM-N信號(hào)中的某個(gè)VC通道，根據(jù)環(huán)上的某一個(gè)別通道信號(hào)的傳輸質(zhì)量來(lái)決定是否倒換，通常利用收端是否收到簡(jiǎn)單的AIS信號(hào)來(lái)決定該通道是否應(yīng)進(jìn)行倒換。 </p> <p> 復(fù)用段倒換環(huán)是以復(fù)用段為基礎(chǔ)的，根據(jù)環(huán)上傳輸?shù)膹?fù)用段信號(hào)的質(zhì)量決定是否倒換。倒換是由K1、K2（b1～b5）字節(jié)所攜帶的APS協(xié)議來(lái)啟動(dòng)的。復(fù)用段保護(hù)倒換的觸發(fā)條件是LOF、LOS、MS-AIS告警信號(hào)。 </p> <p> 通道保護(hù)環(huán)的倒換無(wú)需APS協(xié)議，采用“并發(fā)優(yōu)收”的倒換機(jī)理---簡(jiǎn)單。 </p> <p> 復(fù)用段保護(hù)環(huán)要使用APS協(xié)議，倒換機(jī)理---較復(fù)雜。 </p></p><p><img src="https://tyunfile.71360.com/UploadFile/sztykc/637244845102001954/2472236.jpg" /></p><p>深圳騰云科創(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(gòu)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。公司擁有專業(yè)的技術(shù)團(tuán)隊(duì)，由廠家(中興通訊，華為技術(shù)，烽火通信)服務(wù)10年以上從業(yè)經(jīng)驗(yàn)的技術(shù)****，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(yíng)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。公司業(yè)務(wù)涉及交通、金融、教育、衛(wèi)生、科研等系統(tǒng)已經(jīng)建立了牢固的業(yè)務(wù)合作伙伴關(guān)系。積極面向市場(chǎng)為廣大行業(yè)用戶提供設(shè)計(jì)、安裝、調(diào)試、培訓(xùn)、維護(hù)的“一條龍"服務(wù)。本公司以質(zhì)量的服務(wù)、良好的信譽(yù)、雄厚的技術(shù)力量為廣大客戶提供質(zhì)量服務(wù)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川烽火NMU" src="https://tyunfile.71360.com/UploadFile/sztykc/637244847797656250/1749392.jpg"></div></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/885842.html</p></div></div></div></div></div><div id="8f42lnc" class="page-right 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