VoIP transmission mechanism based on TCP

As the widespread employment of firewalls on the Internet, user datagram protocol (UDP) based voice over Internet protocol (VoIP) system will be unable to transmit voice data. This paper proposed a novel method to transmit voice data based on transmission control protocol (TCP). The method adopts a disorder TCP transmission strategy, which allows discontinuous data packets in TCP queues read by application layer directly without waiting for the retransmission of lost data packets. A byte stream data boundary identification algorithm based on consistent overhead byte stuffing algorithm is designed to efficiently identify complete voice data packets from disordered TCP packets arrived so as to transmit the data to the audio processing module timely. Then, by implementing the prototype system and testing, we verified that the proposed algorithm can solve the high time delay, jitter and discontinuity problems in standard TCP protocol when transmitting voice data packets, which caused by its error control and retransmission mechanism. We proved that the method proposed in this paper is effective and practical.     

基于SOA平台的系统接口服务健康状态监测工具研究

为提高信息系统运维效率,进一步提升信息系统对业务的支撑能力,开发了一套基于SOA平台的系统接口服务健康状态监测工具。介绍了监测工具的总体实现过程、数据可视化实现流程以及功能等。实际应用证明,该工具实现了系统接口服务健康状态可视化、精细化、共享化,为信息系统运维提供了便利的工具,有效提升信息系统运维工作效率与应急抢修工作水平。     

任务督查督办系统的设计与实现

"互联网+"时代,电网企业基于先进的Java程序语言、数据库、B/S架构等技术,开发和构建了一个强大的任务督查督办系统,该系统可以创建各种工作任务,关联提醒短信,提高了工作的效率.任务督查督办系统采用了三层的B/S架构和Java程序语言,这样可以提高系统的可移植性,提高系统数据库的插入、修改、删除等操作效率,系统运行结果显示其可以满足日常的工作业务需求,进一步提高电网企业的自动化、智能化和共享化水平,具有重要的作用和意义.