摘要
从技术的角度分析IP电话的发展历程,在此基础上提出并实现了一种基于TMS320VC5471的独立式IP电话终端设计方案,采用ARM/DSP双处理器结构,语音编解码算法由DSP处理,增强了系统的实时性,它有一个RJ-45以太网接口,能够直接接入因特网,实现和其它IP电话或普通电话通话;给出了硬件和系统软件的构成,并指出了系统需要进一步改进的地方。
The development process of IP phone is presented. Then an IP phone based on TMS320VC5471 is put forward, including hardware platform, embedded operating system μCOS-Ⅱ, TCP/IP stacks and peripheral drivers. The IP phone has an ethernet interface, so it can access internet directely and can communication with others IP phones. ARM/DSP structrue is applied to embedded network systems. The abilities of the processing and computing are strengthened. Finally, the IP phone based on TMS320VC5471 is realized.
出处
《电声技术》
2007年第1期72-74,共3页
Audio Engineering
基金
国家自然科学基金资助项目(60271018
60331010)
