數字選呼 的英文怎麼說

中文拼音 [shǔzìxuǎnhū]
數字選呼 英文
digital selective calling
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 字 : Ⅰ名詞1 （文字） character; word 2 （字音） pronunciation 3 （字體） form of a written or printed ...
  • 選 : Ⅰ動詞1. （挑選） select; choose; pick 2. （選舉） elect Ⅱ名詞（挑選出來編在一起的作品） selections; anthology
  • 數字 : 1. （表示數目的文字; 表示數目的符號） figure; digit; numeral; character; numeric character 2. （數量） quantity; amount
  1. First of all, the development of the digital trunked communication system is summarized, and the technical characteristics of several prevail worldly digital trunked communication systems are compared. in view of the domestic situation, the tetra digital trunked radio communication system is chosen as the studying and developing model. with the study of control technology of softswitch, the protocol of the v + d air interface and the multiple use of channel is analyzed, the base station control unit of the digital trunked communication system is discussed, the calling control flow is designed

    本文首先綜述了數字集群移動通信系統的發展狀況，針對目前國際上流行的數字集群體制的技術特點進行了比較和分析，並根據我國的具體國情選擇了tetra數字集群系統作為研究和開發的重點，結合對軟交換控制技術的研究和分析，對集群系統重要的v + d空中介面協議及其通道復用進行了較為深入的剖析，對數字集群實驗系統的基站控制部分進行了論述，對呼叫控制流程進行了設計。
  2. Secondly, some encryption algorithms are introduced, with the analysis and comparison for these encryption algorithms, the author designs an appropriate project to accomplish the end - to - end encryption. thirdly, this paper accomplish the design of an encryption scheme which combining the strongpoint of the rsa algorithm and the idea algorithm. the main process is as following : first, input the digital signal to the encryption device, and then the digital signal exclusive or with the keying sequence which is generated by key stream generator ( ksg ) and the ksg is based on the idea encrypting and deciphering algorithm, the secret key synchronization is also studied

    本課題主要研究的內容是數字集群通信系統加密機制的研究，首先介紹了數字集群通信系統的安全保密機制，講述了單向和雙向鑒權的過程、單呼和群呼的空中介面加密過程及其密鑰的選用和管理，特別介紹了端到端加密;然後介紹了幾種常用的加密演算法，通過分析其優劣，提出了端到端加密的解決方案;最後完成了基於rsa演算法和idea演算法的數字集群通信系統加密方案的設計，其具體過程為將經過數字信號送入加密器里，和以idea加密演算法為基礎設計的密碼流發生器（ ksg ）產生的密碼序列進行加解密運算，並且研究了此加密過程的密碼同步問題。
  3. If the existing call is a data call, aco provides the ta or router with the option of dropping the data call, in favor of the incoming voice call

    如果現有的呼叫是數字電話，那麼aco向ta或路由器提供掛斷數字呼叫的選項而選擇呼入的語音電話。
  4. Maritime navigation and radiocommunication equipment and systems - vhf radiotelephone equipment incorporating class " d " digital selective calling - methods of testing and required test results

    海上導航和無線電通信設備及系統.採用" d "級數字選擇呼叫的甚高頻無線電話設備.試驗方法和要求的試驗結果
  5. Maritime digital selectivity - calling system

    水上數字選呼系統
  6. Digital selective calling system

    數字選呼系統
  7. Automated attendant. a device which answers callers with a digital recording, and allows callers to route themselves to an extension

    自動總機。一種使用數字錄音對呼叫者進行應答的設備，並且允許呼叫者根據錄音提示選擇進一步收聽。
  8. Global maritime distress and safety system - part 3 : digital selective calling equipment - operational and performance requirements, methods of testing and required testing results

    海上呼救和安全裝置.第3部分:數字選擇呼叫裝置.操作和功能要求.試驗方法和規定試驗結果
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