单呼 meaning in Chinese
single call
Examples
- The internal user can call single user , a group of users and all of users by dialing different numbers . call pertinence is improved and the disturbance to others is not existed
而且具有拨号功能，拨号简便、快捷，对内部用户实现了单呼、群呼、全呼三种呼叫方式，提高了呼叫的针对性，消除了对非被叫用户的干扰。 - The 350m trunked communication system plays a significant role in daily dispatch - command in the police department . it is simple but reliable , and widely used . its calling connect is fast , continued and in high calling quality
350m集群通信系统因为其简单可靠,呼叫接续迅速,覆盖范围较大,通话效果良好,单呼、组呼、 pabx呼叫、调度呼叫等业务功能全,在公安机关的日常指挥调度工作中发挥了巨大的作用,有效的提高了公安干警的战斗力,成为科技强警的重要组成部分。 - 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
本课题主要研究的内容是数字集群通信系统加密机制的研究,首先介绍了数字集群通信系统的安全保密机制,讲述了单向和双向鉴权的过程、单呼和群呼的空中接口加密过程及其密钥的选用和管理,特别介绍了端到端加密;然后介绍了几种常用的加密算法,通过分析其优劣,提出了端到端加密的解决方案;最后完成了基于rsa算法和idea算法的数字集群通信系统加密方案的设计,其具体过程为将经过数字信号送入加密器里,和以idea加密算法为基础设计的密码流发生器( ksg )产生的密码序列进行加解密运算,并且研究了此加密过程的密码同步问题。