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src="http://tyunfile.71360.com/UpLoadFile/2019/7/17/14/636989701226092028_njdswy_1867050.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="uofexjl" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/7/17/14/636989701226092028_njdswy_1867050.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="7x7dkw7" 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>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產品關鍵詞：</span>邵陽專業(yè)程控交換機,程控交換機</p><p><span>***更新：</span>2020-07-04 14:15:41</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="pi2ovm3" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">南京德世偉業(yè)軟件技術有限公司</a></p><p><span>聯(lián)系人：</span>李永亮</p><p><span>郵箱: </span>634765682@qq.com</p><p><span>電話: </span>13276689930</p><p><span>傳真: </span>025_84728227</p><p><span>網址: </span></p><p><span>手機: </span>025-84728227</p><p><span>地址: </span>經濟開發(fā)區(qū)恒盛路5號4號樓215-D室</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="fzwimh4" class="page-proshow02"><p class="title">詳細說明</p><div id="9i4l8q7" class="box"><p><p style="text-indent:25px"> 對電話程控交換機遭受雷擊的情況分析：***.電話程控交換機是由多塊功能電路板拼插組成.電路板上有許多功能集成塊、半導體元件及電感、電容、電阻.其**能集成塊中大量采用CMOS電路.工作電壓在0.7~5V..CMOS電路的過電壓能力弱，邵陽專業(yè)程控交換機.容易損壞.造成電路板甚至整個程控交換機系統(tǒng)故障..第二.由于電話交換機是很多電纜、電線的**點..電話分機線路多在幾十米至上百米的長度.涉及區(qū)域廣、范圍大.更易受雷擊.. 　　這樣．即使是感應雷所形成的感應過電壓對電話程控交換機都能形成威脅..雷擊在建筑物(機房或辦公樓)、設備(電話程控交換機)及電纜電路的附近發(fā)生；或閃電不直接對地放電.只是在距建筑物較近的云層和云層之間放電.閃電釋放電荷所形成的強電磁場.通過電話程控交換機的密集的網線、電源電路和數(shù)據傳輸電路中感應生成過電壓，邵陽專業(yè)程控交換機。這種“過電壓”或將電源模塊，邵陽專業(yè)程控交換機.或將數(shù)據存儲器及微處理器、電話程控交換機用戶板擊壞。邵陽專業(yè)程控交換機</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="邵陽專業(yè)程控交換機,程控交換機" src="http://tyunfile.71360.com/UpLoadFile/2019/7/17/14/636989701226092028_njdswy_1867050.png"></div><p style="text-indent:25px">經常會有人問電話交換機的作用是什么,簡單的說:程控交換機的作用就是　　1)共用外線 5個人或10個人共用一條外線。(起初這樣做的目的是為了節(jié)省電話月租，在90年代，固定電話月租很高，如一個公司有500員工，不可能沒人都申請一條直線，那樣的話，月租就是很大的一筆費用。公司要讓大家每個人都有電話用，又想減少成本支出，買電話交換機就成了一種折中的方案。----每月把錢交給電信運營商，我還不如省下月租，買個程控交換機，在一年之后，電話交換機的成本也就回來了，以后就是賺的了。　　2)管理功能 (現(xiàn)在大家都有電話用了，但是又有個問題：如果不能管理，電話費又上來了。所以又要做一些限制，一些人允許打長途，一些人允許打市話，有些人只允許打內部電話，所以第二點就是管理。　　3)內部通話**(如果是本地電話，同事之間溝通，還需要向電信局交錢。所以在起初正是因為這個原因，也推動了電話交換機的普及?，F(xiàn)在電信運營商推出了匯線通，集線通也可以內部通話**。　　4)可以相互轉接(一個電話同甲同事講完后可以再轉給乙同事。匯線通，集線通也有此功能。　　5)其他功能(代接，代答，內部廣播，保留音樂，電話計費，電腦話務員，語音信箱，外接廣播。邵陽專業(yè)程控交換機</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="邵陽專業(yè)程控交換機,程控交換機" src="http://tyunfile.71360.com/UpLoadFile/2019/7/17/14/636989701226871328_njdswy_4837658.png"></div><p style="text-indent:25px">優(yōu)越性 1、技術上的優(yōu)越性（1）能夠提供許多新的用戶服務功能，如縮位撥號、來電顯示、叫醒業(yè)務、呼叫轉移、呼叫等待等業(yè)務，不再是單一的語音業(yè)務了。（2）維護管理方便，可靠性高。程控交換機可以通過故障診斷程序對故障進行檢測和定位，以發(fā)生故障時緊急處理迅速及時，因此它在維護管理上和可靠性上帶來了好處。（3）靈活性大。為適應交換機外部條件的變化，增加的新業(yè)務往往只需要改變軟件（程序和數(shù)據）就能滿足不同外部條件（如市話局、長話局等的不同需求）的需要。（4）便于利用電子器件的***成果，使整機技術上的先進性得到發(fā)揮。 2、經濟上的優(yōu)越性（1）交換設備方面。體積小，采用電子器件大減小了交換機的體積，這樣占用機房的面積??；耗電省，用電子器件代替機械部件，**減低了能量消耗；成本低，隨著集成電路價格的減低，可以大幅度減低交換機成本。（2）線路設備方面。可以通過采用遠端用戶模塊方式節(jié)省用戶線，降低線路設備費用。（3）維護生產方面。由于檢測和診斷故障的自動化，減少了不少維護工作量，節(jié)省了維護人員。由于制造工藝簡單了，生產效率也提高了。</p><p style="text-indent:25px">防雷擊可采取以下措施： 1．程控交換機應有良好的工作接地和保護接地.接地電阻值應小于3Ω..每年都應檢測并有檢測報告.. 2．程控交換機各控制板和外接電纜插口處應安裝光電隔離器.. 3．電話電纜的屏蔽接地線應和保護接地極連接良好.. 4．是程控交換機供電的交流電路(從配電室到交換機)應采用屏蔽電纜.屏蔽層應和保護接地極連接良好.. 交換機遭雷擊損壞大多由雷電天氣在網線上產生的感應電壓經交換機信號端口竄入機內造成，一般的整機防雷措施如裝設避雷針、機殼接地等無法解決這個問題。一般交換機信號端口內部都設計有防雷擊電路，可以抵抗一般的輕微雷擊，但對大型雷電產生的雷擊則有些力不從心。為進一步解決信號端口引進的雷擊問題，可以采取以下一些措施： 1、外線盡量使用鎧裝電纜，并將鎧裝層妥善接地； 2、在外線與交換機端口之間加接防雷單元，具體措施有： ①串接防雷模塊， ②串接LC吸收單元， ③并接過壓保護元件， ④串接其它防雷保護電路。</p><p style="text-indent:25px">設備功能數(shù)字程控交換機的基本功能主要為：用戶線接入，中繼接續(xù)，計費，設備管理等。本地交換機自動檢測用戶的摘機動作，給用戶的電話機回送撥號音，接收話機產生的脈沖信號或雙音多頻（DTMF)信號，然後完成從主叫到被叫號碼的接續(xù)（被叫號碼可能在同一個交換機也可能在不同的交換機）。在接續(xù)完成後，交換機將保持連接，直到檢測出通信的一方掛機。其中通話接續(xù)部分是利用交換機中的數(shù)字交換網絡，采用PCM方式實現(xiàn)數(shù)字交換的，控制部分是通過軟件由計算機來實現(xiàn)的。基本構成電話交換機的主要任務是實現(xiàn)用戶間通話的接續(xù)?；緞澐譃閮纱蟛糠郑涸捖吩O備和控制設備。話路設備主要包括各種接口電路（如用戶線接口和中繼線接口電路等)和交換 (或接續(xù)）網絡；控制設備在縱橫制交換機中主要包括標志器與記發(fā)器，而在程控交換機中，控制設備則為電子計算機，包括**處理器(CPU),存儲器和輸入 /輸出設備。程控交換機實質上是采用計算機進行“存儲程序控制”的交換機，它將各種控制功能，方法編成程序，存入存儲器，利用對外部狀態(tài)的掃描數(shù)據和存儲程序來控制，管理整個交換系統(tǒng)的工作。濱海新區(qū)程控交換機系統(tǒng)報價</p><p style="text-indent:25px">邵陽專業(yè)程控交換機</p><p style="text-indent:25px">隨著中國通信產品市場的快速發(fā)展，人們的通信需求也日益多樣化，從**初較為單一的通話及短信業(yè)務發(fā)展到現(xiàn)有的上網、購物、休閑娛樂等多樣化的服務。這些服務的實現(xiàn)需要龐大的基站數(shù)量和更加復雜的網絡技術來支撐，隨之而來的是運營商對通信網絡投資規(guī)模的增長。通信十多年的大發(fā)展，[ "SIP話機", "IP電話機", "集團電話", "億聯(lián)IP話機" ]等業(yè)務已深入我們的生活。圍繞業(yè)務實現(xiàn)，網絡運營公司、設備研發(fā)生產公司、設備安裝公司、業(yè)務開發(fā)公司、網絡管理機構、網絡及設備維護公司等構成一個相互依存的產業(yè)鏈，通信行業(yè)由此誕生。從細分產品及服務來看，全球通信軟件技術開發(fā)、計算機軟件開發(fā)、生產、銷售;通訊設備、電子產品、監(jiān)控器材銷售、維修及技術咨詢；自營和代理各類尚品及技術的進出口業(yè)務（***限定企業(yè)經營或禁止的進出口商品和技術除外）。（依法須經批準的項目，經相關部門批準后方可開展經營活動）行業(yè)競爭層次明顯，在不同產品、服務領域有不同的競爭對手。前瞻對全球統(tǒng)一通信產品和服務的銷售（尤其是中端企業(yè)領域），云產品和服務領域，視頻產品和服務方面，以及呼叫中心產品和服務方面的競爭對手進行了整理和歸納。有限責任公司企業(yè)技術的發(fā)展必然將引發(fā)現(xiàn)有通信網絡的擴容、重組與兼容，也將促進通信網絡的多元化業(yè)務發(fā)展，并**終對通信設備制造業(yè)、終端產業(yè)和通信技術服務業(yè)等上下游產業(yè)形成有力拉動。邵陽專業(yè)程控交換機</p><p style="text-indent:25px">南京德世偉業(yè)軟件技術有限公司注冊資金2000-3000萬元，是一家擁有51~100人***員工的企業(yè)。南京德視偉業(yè)軟件致力于為客戶提供質量的[ "SIP話機", "IP電話機", "集團電話", "億聯(lián)IP話機" ]，一切以用戶需求為中心,深受廣大客戶的歡迎。公司注重以質量為中心，以服務為理念，秉持誠信為本的理念，打造通信產品質量品牌。在社會各界的鼎力支持下，經過公司所有人員的努力，公司自2010-10-20成立以來，年營業(yè)額達到50-100萬元。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/492282.html</p></div></div></div></div></div><div id="wcovulf" class="page-right twoColRt"><div id="dh8hqcq" class="box01 margin10 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