摘要
采用SIP协议,基于ARM9 CPU Mini2440设计了了一个控制临床呼叫信号的小型语音网关.该设计在通话时将模拟信号经过采样、数字化、压缩编码、打包分组、分配路由、存储交换、解压缩等一系列交换处理,在IP网实现语音通信,实现了复杂协议向SIP标准协议的转换,使信号可以在整栋大楼进行传输.系统测试表明,通信语音质量良好,不存在语音延迟.
Based on the ARM9 CPU Mini2440 and using the SIP protocol, a small voice gateway which is controlled the clinical call signaling was presented. The analog signal was processed with sampling, digitiza- tion, compression coding, packaging and grouping, distribution route, storage and exchange, unzip etc, the voice communication was realized in the IP network. The conversion from complex protocol to SIP standard protocol was realized in the gateway, the signal can be transmitted in the whole building. The test results showed that the communication voice quality is good and there is no speech delay.
出处
《郑州轻工业学院学报（自然科学版）》
CAS
2012年第6期48-50,共3页
Journal of Zhengzhou University of Light Industry:Natural Science
基金
河南省教育厅自然科学研究计划项目(2009A510015)
