摘要
文章介绍了基于ARM和DSP的VoIP网关的软硬件设计。其中硬件主要由基于ARM内核的微处理器S3C44B0子系统和基于LSI403LP芯片的DSP子系统以及电话接口模块构成。软件设计主要负责控制SIP核心协议栈oSIP、RTP/RTCP核心协议栈ccRTP的正常运转,控制外围DSP芯片工作。测试证明,文章所设计的VoIP网关能够实现网关的主要功能,具有成本低廉、应用灵活、可扩展性好的特点。
This paper describes the hardware and software design of VoIP Gateway based on ARM and DSP. Its main hardware is microprocessor S3C44B0 subsystem based on ARM core, DSP subsystem based onLSI403LPand telephone interface module. The software design is used to control the normal operations of SIP core protocol stack oSIP, RTP / RTCP core protocol stack ccRTP and the external DSP chip. The test proves that the VoIP gateway described in this paper can achieve the main gateway functions. The VoIP gateway has the advantages of low cost, flexible application and good scalability.
出处
《通信技术》
2008年第8期173-175,178,共4页
Communications Technology
