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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>?陜西烽火千兆以太網(wǎng)出線卡深圳市騰云科創(chuàng)供應(yīng)</p><div id="8ysuwi8" class="leftbox clearfix"><h1>陜西烽火千兆以太網(wǎng)出線卡深圳市騰云科創(chuàng)供應(yīng)</h1><div id="p2rdqac" class="proBig"><div id="vewtaco" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/sztykc/637244847724550782/6753357.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="jsph8y7" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/sztykc/637244847724550782/6753357.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="mfr7lvs" 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>陜西烽火千兆以太網(wǎng)出線卡</p><p><span>***更新：</span>2020-06-08 00:31:35</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="etq2gda" 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="i23yp8g" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="7khz87h" class="box"><p>隨著信息社會(huì)的到來，人們希望現(xiàn)代信息傳輸網(wǎng)絡(luò)能快速、經(jīng)濟(jì)、有效地提供各種電路和業(yè)務(wù)，而上述網(wǎng)絡(luò)技術(shù)由于其業(yè)務(wù)的單調(diào)性，陜西烽火千兆以太網(wǎng)出線卡，擴(kuò)展的復(fù)雜性，帶寬的局限性，陜西烽火千兆以太網(wǎng)出線卡，*在原有框架內(nèi)修改或完善已無濟(jì)于事，此時(shí)SDH的產(chǎn)生并憑借其眾多特性，使其在廣域網(wǎng)領(lǐng)域和**網(wǎng)領(lǐng)域得到了巨大的發(fā)展。 <p> 深圳市騰云科創(chuàng)信息咨詢有限公司是一家專業(yè)從事中興傳輸設(shè)備、華為SDH光傳輸設(shè)備、PCM接入設(shè)備、以及設(shè)備所配置的業(yè)務(wù)板卡等通信產(chǎn)品銷售及通信智能化項(xiàng)目施工的公司。我們秉承“客戶至上，誠信務(wù)實(shí)”的服務(wù)理念，陜西烽火千兆以太網(wǎng)出線卡，用心、創(chuàng)新、高效，以質(zhì)量的專業(yè)技術(shù)為客戶提供比較好的需求服務(wù)。我司供應(yīng)光傳輸設(shè)備，SDH光端機(jī)，中興ZXMP系列產(chǎn)品：ZXMP </p> <p> S200｜ZXMP S320｜ZXMP S330｜ZXMP S325｜ZXMP S385｜ZXMP S390整機(jī)及各型號(hào)單板。供應(yīng)華為Metro系列產(chǎn)品：Metro1000｜Metro2050｜Metro3000｜Optix2500+｜Metro5000整機(jī)及各型號(hào)單板。供應(yīng)華為OSN系列產(chǎn)品：OSN1500B｜OSN2000｜OSN2500｜OSN3500｜OSN7500整機(jī)及各型號(hào)單板。供應(yīng)烽火IBAS系列產(chǎn)品： </p> <p> IBAS780A｜IBAS780B供應(yīng)PCM綜合接入設(shè)備：FA16接入設(shè)備｜BX10接入設(shè)備，您的滿意，是我們一直的追求！ </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="陜西烽火千兆以太網(wǎng)出線卡" src="https://tyunfile.71360.com/UploadFile/sztykc/637244847724550782/6753357.jpg"></div><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)量來決定是否倒換，通常利用收端是否收到簡單的AIS信號(hào)來決定該通道是否應(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)的倒換無需APS協(xié)議，采用“并發(fā)優(yōu)收”的倒換機(jī)理---簡單。 </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><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="陜西烽火千兆以太網(wǎng)出線卡" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845101689454/4175838.jpg"></div><p> SDH的特點(diǎn) </p> <p> SDH是數(shù)字傳輸體制上繼PDH之后的一次劃時(shí)代的飛躍。SDH之所以能夠快速發(fā)展這是與它自身的特點(diǎn)是分不開的，其具體特點(diǎn)如下： </p> <p> （1）SDH傳輸系統(tǒng)在國際上有統(tǒng)一的幀結(jié)構(gòu)，數(shù)字傳輸標(biāo)準(zhǔn)速率和標(biāo)準(zhǔn)的光路接口，使網(wǎng)管系統(tǒng)互通，因此有很好的橫向兼容性，它能與現(xiàn)有的PDH完全兼容，并容納各種新的業(yè)務(wù)信號(hào)，形成了全球統(tǒng)一的數(shù)字傳輸體制標(biāo)準(zhǔn)，提高了網(wǎng)絡(luò)的可靠性； </p> <p> （2）SDH接入系統(tǒng)的不同等級(jí)的碼流在幀結(jié)構(gòu)凈負(fù)荷區(qū)內(nèi)的排列非常有規(guī)律，而凈負(fù)荷與網(wǎng)絡(luò)是同步的，它利用軟件能將高速信號(hào)一次直接分插出低速支路信號(hào)，實(shí)現(xiàn)了一次復(fù)用的特性，克服了PDH準(zhǔn)同步復(fù)用方式對(duì)全部高速信號(hào)進(jìn)行逐級(jí)分解然后再生復(fù)用的過程，由于**簡化了DXC，減少了背靠背的接口復(fù)用設(shè)備，改善了網(wǎng)絡(luò)的業(yè)務(wù)傳送透明性； </p> <p> （3）由于采用了較先進(jìn)的分插復(fù)用器（ADM）、數(shù)字交叉連接（DXC）、網(wǎng)絡(luò)的自愈功能和重組功能就顯得非常強(qiáng)大，具有較強(qiáng)的生存率。因SDH幀結(jié)構(gòu)中安排了信號(hào)的5％開銷比特，它的網(wǎng)管功能顯得特別強(qiáng)大，并能統(tǒng)一形成網(wǎng)絡(luò)管理系統(tǒng)，為網(wǎng)絡(luò)的自動(dòng)化、智能化、信道的利用率以及降低網(wǎng)絡(luò)的維管費(fèi)和生存能力起到了積極作用； </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="陜西烽火千兆以太網(wǎng)出線卡" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845105136719/8556415.jpg"></div></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/181854.html</p></div></div></div></div></div><div id="tugifhj" class="page-right twoColRt"><div id="x23hogi" class="box01 margin10 clearfix"><h3><a 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