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id="qumtkef" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/sztykc/637244845101923829/7728521.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="hvxeq8s" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/sztykc/637244845101923829/7728521.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="hqn3qfg" 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)品關鍵詞：</span>廣西光傳輸設備烽火PEOW,烽火</p><p><span>***更新：</span>2021-01-10 09:08:44</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="m7ofx94" 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: </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="ymegico" class="page-proshow02"><p class="title">詳細說明</p><div id="dsp8vn2" class="box"><p><p> SDH網(wǎng)絡的常見網(wǎng)元和功能 </p> <p> SDH傳輸網(wǎng)是由不同類型的網(wǎng)元通過光纜線路的連接組成的，通過不同的網(wǎng)元完成SDH網(wǎng)的傳送功能：上/下業(yè)務、交叉連接業(yè)務、網(wǎng)絡故障自愈等。下面我們講述SDH網(wǎng)中常見網(wǎng)元的特點和基本功能。 </p> <p> TM——終端復用器 </p> <p> 終端復用器用在網(wǎng)絡的終端站點上，例如一條鏈的兩個端點上，它是一個雙端口器件，廣西光傳輸設備烽火PEOW。它的作用是將支路端口的低速信號復用到線路端口的高速信號STM-N中，或從STM-N的信號中分出低速支路信號。請注意它的線路端口輸入/輸出一路STM-N信號，廣西光傳輸設備烽火PEOW，而支路端口卻可以輸出/輸入多路低速支路信號。在將低速支路信號復用進STM-N幀（將低速信號復用到線路）上時，有一個交叉的功能，例如：可將支路的一個STM-1信號復用進線路上的STM-16信號中的任意位置上，也就是指復用在1~16個STM-1的任一個位置上。將支路的2Mbit/s信號可復用到一個STM-1中63個VC12的任一個位置上去。對于華為設備，廣西光傳輸設備烽火PEOW，TM的線路端口（光口）一般以西向端口默認表示的。這些系統(tǒng)的所有信息傳輸都必須由通信系統(tǒng)提供通道。廣西光傳輸設備烽火PEOW</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣西光傳輸設備烽火PEOW,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845101923829/7728521.jpg"></div><p> 基本的網(wǎng)絡拓撲結構 </p> <p> SDH網(wǎng)是由SDH網(wǎng)元設備通過光纜互連而成的，網(wǎng)絡節(jié)點設備（網(wǎng)元）和傳輸線路的幾何排列就構成了網(wǎng)絡的拓撲結構。網(wǎng)絡的有效性、可靠性和經(jīng)濟性在很大程度上與其拓撲結構有關。 </p> <p> 網(wǎng)絡拓撲的基本結構有鏈形、星形、樹形、環(huán)形和網(wǎng)孔形。 </p> <p> 鏈形網(wǎng) </p> <p> 鏈形網(wǎng)絡拓撲是將網(wǎng)中的所有節(jié)點一一串聯(lián)，而首尾兩端開放。這種拓撲的特點是較經(jīng)濟，在SDH網(wǎng)的早期用得較多，主要用于專網(wǎng)如鐵路網(wǎng)中。 </p> <p> 星形網(wǎng) </p> <p> 星形網(wǎng)絡拓撲是將網(wǎng)中一網(wǎng)元做為中心節(jié)點設備與其他各網(wǎng)元節(jié)點相連，其他各網(wǎng)元節(jié)點之間互不相連，網(wǎng)元節(jié)點的業(yè)務都要經(jīng)過這個特殊節(jié)點轉接。 </p> <p> <br /> </p> <p> <br /> 廣西光傳輸設備烽火PEOW將所有網(wǎng)元節(jié)點兩兩相連，就形成了網(wǎng)孔形網(wǎng)絡。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣西光傳輸設備烽火PEOW,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244847651777344/7289118.jpg"></div><p style="text-indent:25px">它可實現(xiàn)網(wǎng)絡有效管理、實時業(yè)務監(jiān)控、動態(tài)網(wǎng)絡維護、不同廠商設備間的互通等多項功能，能**提高網(wǎng)絡資源利用率、降低管理及維護費用、實現(xiàn)靈活可靠和***的網(wǎng)絡運行與維護，因此是當今世界信息領域在傳輸技術方面的發(fā)展和應用的熱點，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整機及各型號單板。華為Metro系列產(chǎn)品：Metro1000｜Metro2050｜Metro3000｜Optix2500+｜Metro5000整機及各型號單板。華為OSN系列產(chǎn)品：OSN1500B｜OSN2000｜OSN2500｜OSN3500｜OSN7500整機及各型號單板。烽火IBAS系列產(chǎn)品： IBAS780A｜IBAS780B， PCM綜合接入設備介紹：FA16接入設備｜BX10接入設備</p><p> <p> <p> 從技術上來看，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)務傳送。以SDH 系統(tǒng)為基礎并能夠提供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)務提供點（POP）上提供高質量專線、ATM 、IP 等業(yè)務的接入、傳送和保護。 </p> <p> 隨著骨干傳輸容量不斷增大，城域傳輸網(wǎng)絡的接入能力也多樣化。但以IP為主的網(wǎng)絡業(yè)務仍然是不可預知的，這需要傳輸網(wǎng)絡具有更好的自適應能力，而這種自適應能力不**是網(wǎng)絡接口或網(wǎng)絡容量的適應能力，而且要求網(wǎng)絡連接的自適應能力?？偟膩碚f，低成本、靈活快速的完成運營商端局到用戶端的業(yè)務接入和業(yè)務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 /> 分/插復用器用于SDH傳輸網(wǎng)絡的轉接站點處。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣西光傳輸設備烽火PEOW,烽火" src="https://tyunfile.71360.com/UploadFile/sztykc/637244845103378907/6385040.jpg"></div><p> SDH的特點 </p> <p> SDH是數(shù)字傳輸體制上繼PDH之后的一次劃時代的飛躍。SDH之所以能夠快速發(fā)展這是與它自身的特點是分不開的，其具體特點如下： </p> <p> （1）SDH傳輸系統(tǒng)在國際上有統(tǒng)一的幀結構，數(shù)字傳輸標準速率和標準的光路接口，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)務信號，形成了全球統(tǒng)一的數(shù)字傳輸體制標準，提高了網(wǎng)絡的可靠性； </p> <p> （2）SDH接入系統(tǒng)的不同等級的碼流在幀結構凈負荷區(qū)內的排列非常有規(guī)律，而凈負荷與網(wǎng)絡是同步的，它利用軟件能將高速信號一次直接分插出低速支路信號，實現(xiàn)了一次復用的特性，克服了PDH準同步復用方式對全部高速信號進行逐級分解然后再生復用的過程，由于**簡化了DXC，減少了背靠背的接口復用設備，改善了網(wǎng)絡的業(yè)務傳送透明性； </p> <p> （3）由于采用了較先進的分插復用器（ADM）、數(shù)字交叉連接（DXC）、網(wǎng)絡的自愈功能和重組功能就顯得非常強大，具有較強的生存率。因SDH幀結構中安排了信號的5％開銷比特，它的網(wǎng)管功能顯得特別強大，并能統(tǒng)一形成網(wǎng)絡管理系統(tǒng)，為網(wǎng)絡的自動化、智能化、信道的利用率以及降低網(wǎng)絡的維管費和生存能力起到了積極作用；為滿足整個電力部門目前和將來的所有通信需求, 需要做到話音。廣西光傳輸設備烽火PEOW</p><p style="text-indent:25px">隨著骨干傳輸容量不斷增大，城域傳輸網(wǎng)絡的接入能力也多樣化。廣西光傳輸設備烽火PEOW</p><p> 網(wǎng)管系統(tǒng)的傳輸通道由D1，D12開銷字節(jié)提供，網(wǎng)絡單元之間采用DCC通道， </p> <p> DCC通道終端在被連接的每個設備上，在相同的管理區(qū)域內，通過以太網(wǎng)連接。例如某地市目前*有l(wèi)套網(wǎng)管系統(tǒng)。利用現(xiàn)有的網(wǎng)管設備，將新增網(wǎng)元納入到現(xiàn)有網(wǎng)管系統(tǒng)中，統(tǒng)一進行管理。一套OTNM 2000其多可管理756個等效標準網(wǎng)元，現(xiàn)有的網(wǎng)管系統(tǒng)有足夠的能力管理包括本期新增的所有網(wǎng)元。網(wǎng)管管理能力是一套網(wǎng)管在保證規(guī)定性能指標的情況下所能管理的比較大等效網(wǎng)元數(shù)。 </p> <p> 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整機及各型號單板。華為Metro系列產(chǎn)品：Metro1000｜Metro2050｜Metro3000｜Optix2500+｜Metro5000整機及各型號單板。華為OSN系列產(chǎn)品：OSN1500B｜OSN2000｜OSN2500｜OSN3500｜OSN7500整機及各型號單板。烽火IBAS系列產(chǎn)品： IBAS780A｜IBAS780B， PCM綜合接入設備介紹：FA16接入設備｜BX10接入設備廣西光傳輸設備烽火PEOW</p><p style="text-indent:25px">深圳市騰云科創(chuàng)信息咨詢有限公司是一家電力設備、電子元器件、電子產(chǎn)品、建筑材料、通信設備(中興通訊及華為技術各系列產(chǎn)品板件及整套設備的銷售與安裝，設備維護及板件返修，以及各設備可配置的單板，用戶電纜，中繼電纜等)、辦公設備、五金交電、化工原料（不含危險及監(jiān)控化學品）的銷售；經(jīng)濟信息咨詢；經(jīng)營進出口業(yè)務。的公司，是一家集研發(fā)、設計、生產(chǎn)和銷售為一體的專業(yè)化公司。騰云科創(chuàng)深耕行業(yè)多年，始終以客戶的需求為向導，為客戶提供***的SDH光傳輸設備，光端機，PCM接入設備，PTN OTN光傳輸設備。騰云科創(chuàng)致力于把技術上的創(chuàng)新展現(xiàn)成對用戶產(chǎn)品上的貼心，為用戶帶來良好體驗。騰云科創(chuàng)始終關注自身，在風云變化的時代，對自身的建設毫不懈怠，高度的專注與執(zhí)著使騰云科創(chuàng)在行業(yè)的從容而自信。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2785902.html</p></div></div></div></div></div><div id="irjbtn7" class="page-right twoColRt"><div id="rlxu7da" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div 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