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href="http://m.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a 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>?烽火STM-64 深圳市騰云科創(chuàng)供應(yīng)</p><div id="y33ytfc" class="leftbox clearfix"><h1>烽火STM-64 深圳市騰云科創(chuàng)供應(yīng)</h1><div id="oifmo2b" class="proBig"><div id="y3pwyvh" 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="q7axpmo" 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="q9s3cmd" 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>烽火STM-64,烽火</p><p><span>***更新：</span>2020-08-27 04:17:45</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="wctl2gd" 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="yubtvcz" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="rqnfxuw" class="box"><p><p> SDH的發(fā)展趨勢(shì) </p> <p> SDH作為新一代理想的傳輸體系，具有路由自動(dòng)選擇能力，上下電路方便，維護(hù)、控制，烽火STM-64、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。迄今，SDH得到了空前的應(yīng)用與發(fā)展，烽火STM-64。在標(biāo)準(zhǔn)化方面，烽火STM-64，已建立和即將建立的一系列建議已基本上覆蓋了SDH的方方面面。在干線網(wǎng)和長(zhǎng)途網(wǎng)、中繼網(wǎng)、接入網(wǎng)中它開始廣泛應(yīng)用。且在光纖通信、微波通信、衛(wèi)星通信中也積極地開展研究與應(yīng)用。 </p> <p> <br /> 從OSI模型的觀點(diǎn)來(lái)看，SDH屬于其比較低層的物理層。烽火STM-64</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="烽火STM-64,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244847724550782/6753357.jpg"></div><p> SDH的復(fù)用包括兩種情況： </p> <p> 1、由STM-1信號(hào)復(fù)用成STM-N信號(hào) </p> <p> 復(fù)用的方法主要通過(guò)字節(jié)間插的同步復(fù)用方式來(lái)完成的，復(fù)用的基數(shù)是4，即4×STM-1→STM-4，4×STM-4→STM-16。在復(fù)用過(guò)程中保持幀頻不變（8000幀/秒），這就意味著高一級(jí)的STM-N信號(hào)是低一級(jí)的STM-n信號(hào)速率的4倍。 </p> <p> 在進(jìn)行字節(jié)間插復(fù)用過(guò)程中，各幀的信息凈負(fù)荷和指針字節(jié)按原值進(jìn)行字節(jié)間插復(fù)用，而STM-N的段開銷并不是由所有低階STM-N幀中的段開銷間插復(fù)用而成，而是舍棄了某些低階幀中的段開銷。 </p> <p> 2、由PDH支路信號(hào)復(fù)用成STM-N信號(hào) </p> <p> 各種PDH支路信號(hào)復(fù)用進(jìn)STM-N幀的過(guò)程都要經(jīng)歷映射、定位、復(fù)用三個(gè)步驟。映射相當(dāng)于信號(hào)打包，定位伴隨與指針調(diào)整，復(fù)用相當(dāng)于字節(jié)間插復(fù)用。ITU-T規(guī)定了一整套完整的映射復(fù)用結(jié)構(gòu)，也就是映射復(fù)用路線，通過(guò)這些路線可將PDH的3個(gè)系列的數(shù)字信號(hào)以多種方法復(fù)用成STM-N信號(hào)。 </p> <p> 復(fù)用結(jié)構(gòu)包括了一些基本的復(fù)用單元：C－容器、VC－虛容器、TU－支路單元、TUG－支路單元組、AU－管理單元、AUG－管理單元組，這些復(fù)用單元的下標(biāo)表示與此復(fù)用單元相應(yīng)的信號(hào)級(jí)別。 </p> <p> 從一個(gè)有效負(fù)荷到STM-N的復(fù)用路線不是***的，有多條路線（也就是說(shuō)有多種復(fù)用方法），8Mbit/s的PDH支路信號(hào)是無(wú)法復(fù)用成STM-N信號(hào)的。 </p> <p> <br /> 徐匯區(qū)烽火780A標(biāo)準(zhǔn)的開放型光接口可以在基本光纜段上實(shí)現(xiàn)橫向兼容，降低了聯(lián)網(wǎng)成本。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="烽火STM-64,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244847603603516/458709.jpg"></div><p> 免除了**困難的光纜輔設(shè)工程，比較適用于具有大規(guī)模用戶的企業(yè)。又如委托公眾網(wǎng)**為本企業(yè)或部門使用的虛擬**網(wǎng)，它所提供的功能和容量完全按照用戶的要求進(jìn)行，這就免除了全部的投資風(fēng)險(xiǎn)和維護(hù)工作，應(yīng)用機(jī)動(dòng)靈活，使用部門可以專心致力于其本行業(yè)的業(yè)務(wù)工作。 </p> <p> 廣而言之，把企業(yè)非**的服務(wù)性職能交給社會(huì)的專業(yè)部門經(jīng)營(yíng)，而集中力量從事自己的**業(yè)務(wù)，甚至**所謂的虛擬公司，這已經(jīng)成為上世紀(jì)90年代以來(lái)西方國(guó)家的企業(yè)為提高其競(jìng)爭(zhēng)力而公認(rèn)的世界性潮流?？傊?，依托穩(wěn)定的服務(wù)主體，有條件積極取得進(jìn)入電信市場(chǎng)競(jìng)爭(zhēng)的合法地位，或與公網(wǎng)聯(lián)合，間接進(jìn)軍電信市場(chǎng)，是目前形勢(shì)下各大專網(wǎng)的主要選擇；這也是電信技術(shù)**的必然產(chǎn)物，更是我國(guó)由計(jì)劃經(jīng)濟(jì)向市場(chǎng)經(jīng)濟(jì)轉(zhuǎn)變的要求。 </p> <p> <br /> </p><p> 傳輸網(wǎng)上的業(yè)務(wù)按流向可分為單向業(yè)務(wù)和雙向業(yè)務(wù)。以環(huán)網(wǎng)為例說(shuō)明單向業(yè)務(wù)和雙向業(yè)務(wù)的區(qū)別。 </p> <p> <br /> </p> <p> 若A和C之間互通業(yè)務(wù)，A到C的業(yè)務(wù)路由假定是A→B→C，若此時(shí)C到A的業(yè)務(wù)路由是C→B→A，則業(yè)務(wù)從A到C和從C到A的路由相同，稱為一致路由。 </p> <p> 若此時(shí)C到A的路由是C→D→A，那么業(yè)務(wù)從A到C和業(yè)務(wù)從C到A的路由不同，稱為分離路由。 </p> <p> 我們稱一致路由的業(yè)務(wù)為雙向業(yè)務(wù)，分離路由的業(yè)務(wù)為單向業(yè)務(wù)。常見組網(wǎng)的業(yè)務(wù)方向和路由。 </p> <p> 深圳市騰云科創(chuàng)信息咨詢有限公司以質(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)。我司供應(yīng)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(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： 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。努力奉獻(xiàn)，您的滿意是我們一直的追求！在各種寬帶光纖接入網(wǎng)技術(shù)中，采用SDH技術(shù)的接入網(wǎng)系統(tǒng)是應(yīng)用**普遍的。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="烽火STM-64,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244847797656250/1749392.jpg"></div><p> 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。 </p> <p> 根據(jù)公式：電流=功率／電壓。各設(shè)備正常工作時(shí)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。 </p> <p> 時(shí)鐘同步系統(tǒng) </p> <p> SDH網(wǎng)元時(shí)鐘源的種類 </p> <p> (1)外部時(shí)鐘源——由SETPI功能塊提供輸入接口； </p> <p> (2)線路時(shí)鐘源一由SPI功能塊從STM．N線路信號(hào)中提?。?</p> <p> (3)支路時(shí)鐘源——由PPI功能塊從PDH支路信號(hào)中提取，不過(guò)該時(shí)鐘一般不用，因?yàn)镾DH／PDH網(wǎng)邊界處的指針調(diào)整會(huì)影響時(shí)鐘質(zhì)量； </p> <p> (4)設(shè)備內(nèi)置時(shí)鐘源由SETS功能塊提供。 </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)。青浦區(qū)烽火CONT</p><p style="text-indent:25px">由于幀周期的恒定使STM-N信號(hào)的速率有其規(guī)律性。烽火STM-64</p><p> 近些年，點(diǎn)播電視、多媒體業(yè)務(wù)和其他寬帶業(yè)務(wù)如雨后春筍般紛紛出現(xiàn)，為SDH應(yīng)用在接入網(wǎng)中提供了廣闊的空間。SDH技術(shù)應(yīng)用于接入網(wǎng)的好處是：1）對(duì)于要求高可靠、高質(zhì)量業(yè)務(wù)的大型企事業(yè)用戶，SDH可以提供較為理想的網(wǎng)絡(luò)性能和業(yè)務(wù)可靠性。2）可以將網(wǎng)管范圍擴(kuò)展至用戶端，簡(jiǎn)化維護(hù)工作。3）利用SDH固有靈活性，可使網(wǎng)絡(luò)運(yùn)營(yíng)者更快、更有效地提供用戶所需的長(zhǎng)期和短期業(yè)務(wù)需求。 </p> <p> <br /> </p> <p> 深圳騰云科創(chuàng)信息咨詢有限公司主營(yíng)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(hào)單板。華為Metro系列產(chǎn)品：Metro1000｜Metro2050｜Metro3000｜Optix2500+｜Metro5000整機(jī)及各型號(hào)單板。華為OSN系列產(chǎn)品：OSN1500B｜OSN2000｜OSN2500｜OSN3500｜OSN7500整機(jī)及各型號(hào)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)備烽火STM-64</p><p style="text-indent:25px">深圳市騰云科創(chuàng)信息咨詢有限公司創(chuàng)立于2015-10-29，是一家貿(mào)易型公司。騰云科創(chuàng)致力于為客戶提供質(zhì)量的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，一切以用戶需求為中心，深受廣大客戶的歡迎。公司從事通信產(chǎn)品多年，有著創(chuàng)新的設(shè)計(jì)、強(qiáng)大的技術(shù)，還有一批獨(dú)立的專業(yè)化的隊(duì)伍，確保為客戶提供質(zhì)量的產(chǎn)品及服務(wù)。在社會(huì)各界的鼎力支持下，持續(xù)創(chuàng)新，不斷鑄造高品質(zhì)服務(wù)經(jīng)歷，為客戶成功提供堅(jiān)實(shí)有力的支持。</p></p><br /><p>文章來(lái)源地址: http://m.cdcfah.com/cp/1054656.html</p></div></div></div></div></div><div id="8hm33vs" class="page-right twoColRt"><div id="azbt2k3" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ys7htq3" class="recomPic likePro"><a href="http://m.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(qiáng) 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(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="mbn2wqm" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/846569.html"><div><img 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