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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>云南SDH光傳輸設(shè)備烽火IBAS 180,烽火</p><p><span>***更新：</span>2021-02-01 04:06:44</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="hvnc2iz" 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="lf77au7" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="bkh2ulq" class="box"><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 </p> <p> <br /> </p> <p> 以太網(wǎng)業(yè)務(wù)的接入和傳送應(yīng)用,支持端口捆綁( IEEE802. 3ad) 和生成樹算法( IEEE802.1D) ，云南SDH光傳輸設(shè)備烽火IBAS 180, 支持VLAN ( IEEE802. 1Q ) 和QoS ( IEEE802.1p ) , 可以直接提供10Mb/100Mb自適應(yīng)以太網(wǎng)接口, 通過(guò)內(nèi)置2 層、3 層以太網(wǎng)交換機(jī)實(shí)現(xiàn)統(tǒng)計(jì)復(fù)用, 并且支持VC212 虛級(jí)聯(lián), 帶寬從1～ 48 個(gè)2M b平滑設(shè)置，云南SDH光傳輸設(shè)備烽火IBAS 180。 SDH并不專屬于某種傳輸介質(zhì)，云南SDH光傳輸設(shè)備烽火IBAS 180，它可用于雙絞線、同軸電纜。云南SDH光傳輸設(shè)備烽火IBAS 180</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="云南SDH光傳輸設(shè)備烽火IBAS 180,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845105205079/5635847.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(guó)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(guò)程，由于**簡(jiǎn)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；云南SDH光傳輸設(shè)備烽火IBAS 180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）。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="云南SDH光傳輸設(shè)備烽火IBAS 180,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845101689454/9165528.jpg"></div><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。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。</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";"> 時(shí)鐘同步系統(tǒng)</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">SDH網(wǎng)元時(shí)鐘源的種類</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">(1)外部時(shí)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(shí)鐘源一由SPI功能塊從STM．N線路信號(hào)中提??；</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">(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；</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">(4)設(shè)備內(nèi)置時(shí)鐘源由SETS功能塊提供。</span> </p> <p> <br /> </p> <p> <br /> </p> <span style="font-size:16px;font-family:"Microsoft YaHei";"></span><p> <span style="font-size:16px;font-family:"Microsoft YaHei";">SDH的特點(diǎn)：</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">（1）SDH傳輸系統(tǒng)在國(guó)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。</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">（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(guò)程，由于**簡(jiǎn)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。</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">（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。</span> SDH是數(shù)字傳輸體制上繼PDH之后的一次劃時(shí)代的飛躍。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="云南SDH光傳輸設(shè)備烽火IBAS 180,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845101923829/7728521.jpg"></div><p> <span style="font-size:16px;font-family:"Microsoft YaHei";">SDH的缺點(diǎn)，</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";"> 1，頻帶利用率低。</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";"> 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(huì)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(tái)就增多，這樣就提高了選擇性。但是，由于這時(shí)頻帶相應(yīng)的會(huì)變窄，必然會(huì)使音質(zhì)下降，也就降低了可靠性。</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";"> 2，指針調(diào)整機(jī)理復(fù)雜。</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";"> SDH體制可以從高速信號(hào)（STM-1）中直接下低速信號(hào)（例如2Mbit/s），省去了多級(jí)復(fù)用，解復(fù)用過(guò)程，這種功能的實(shí)現(xiàn)是通過(guò)指針機(jī)理來(lái)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。比較重要的是系統(tǒng)產(chǎn)生SDH的一種特有抖動(dòng)—由指針調(diào)整引起的結(jié)合抖動(dòng)。</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";"> 3，軟件的大量使用對(duì)系統(tǒng)的安全性的影響。</span> </p> <p> <span style="font-size:16px;font-family:"Microsoft YaHei";">在***無(wú)處不在的***，軟件的的大量使用，很容易受到破壞，加上人為操作，軟件故障，對(duì)系統(tǒng)的影響也是致命的。</span> </p> <p> <br /> </p> <p> <br /> 同時(shí)也使網(wǎng)絡(luò)運(yùn)行靈活、安全、可靠，使網(wǎng)絡(luò)的功能非常齊全和多樣化；湖北光傳輸設(shè)備烽火NMU</p><p style="text-indent:25px">樹形網(wǎng)絡(luò)拓?fù)淇煽闯墒擎溞瓮負(fù)浜托切瓮負(fù)涞慕Y(jié)合。云南SDH光傳輸設(shè)備烽火IBAS 180</p><p style="text-indent:25px">同PDH相比, SDH組網(wǎng)的巨大的優(yōu)越性完全發(fā)揮出來(lái)了。用雙環(huán)相切、多環(huán)相切的主干網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu), 采用相切環(huán)時(shí)可在兩環(huán)相切的節(jié)點(diǎn)上采用雙環(huán)網(wǎng)元設(shè)備交叉保護(hù), 克服雙環(huán)相切時(shí)節(jié)點(diǎn)保護(hù)可靠性差的問(wèn)題。支路可根據(jù)實(shí)際需要采用鏈形、星形、樹形等結(jié)構(gòu)。另外, 采用SDH 設(shè)備的光纖自愈環(huán)可實(shí)現(xiàn)多種形式的通道保護(hù), 而且SDH 光纖環(huán)有較強(qiáng)的自愈能力。傳統(tǒng)的組網(wǎng)概念中,提高傳輸設(shè)備利用率是比較關(guān)鍵的,為了增加線路的占空比,在每個(gè)節(jié)點(diǎn)都建立了許多直接通道，致使網(wǎng)絡(luò)結(jié)構(gòu)非常復(fù)雜。而利用SDH 組網(wǎng),使用SDH提供的豐富的開銷字節(jié),就可以極大簡(jiǎn)化網(wǎng)絡(luò)結(jié)構(gòu),實(shí)現(xiàn)強(qiáng)大的OAM功能,降低傳輸費(fèi)用并支持新業(yè)務(wù)的發(fā)展, 這正符合了現(xiàn)代通信發(fā)展的目標(biāo)。同PDH相比, SDH組網(wǎng)的巨大的優(yōu)越性完全發(fā)揮出來(lái)了。云南SDH光傳輸設(shè)備烽火IBAS 180</p><p style="text-indent:25px">深圳市騰云科創(chuàng)信息咨詢有限公司主要經(jīng)營(yíng)范圍是通信產(chǎn)品，擁有一支專業(yè)技術(shù)團(tuán)隊(duì)和良好的市場(chǎng)口碑。公司自成立以來(lái)，以質(zhì)量為發(fā)展，讓匠心彌散在每個(gè)細(xì)節(jié)，公司旗下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(jì)、強(qiáng)大的技術(shù)，還有一批獨(dú)立的專業(yè)化的隊(duì)伍，確保為客戶提供良好的產(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)體驗(yàn)，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://www.cdcfah.com/cp/3103807.html</p></div></div></div></div></div><div id="ki2x7jg" class="page-right twoColRt"><div id="hawaw8v" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="7rnpryk" 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(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="2x3t9y3" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img 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