基于單DSP的VoIP模擬電話適配器研究與實(shí)現(xiàn):提出和實(shí)現(xiàn)了一種新穎的基于單個(gè)通用數(shù)字信號(hào)處理器(DSP)的VoIP模擬電話適配器方案。DSP的I/O和存儲(chǔ)資源非常有限,通常適于運(yùn)算密集型應(yīng)用,不適宜控制密集型應(yīng)用[5]。該系統(tǒng)高效利用單DSP的I/O和片內(nèi)外存儲(chǔ)器資源,采用μC/OS-II嵌入式實(shí)時(shí)操作系統(tǒng),支持SIP和TCP-UDP/IP協(xié)議,通過(guò)LAN或者寬帶接入,使普通電話機(jī)成為Internet終端,實(shí)現(xiàn)IP電話。該系統(tǒng)軟硬件結(jié)構(gòu)緊湊高效,運(yùn)行穩(wěn)定,成本低,具有廣闊的應(yīng)用前景。關(guān)鍵詞:模擬電話適配器;IP電話;數(shù)字信號(hào)處理器;μC/OS-II
【Abstract】This paper presents a VoIP ATA solution based on a single digital signal processor (DSP). DSPs are suitable for arithmetic-intensiveapplication and unsuitable for control-intensive application because of the limitation of I/O and memory resources. This solution is based on a 16-bitfixed-point DSP and μC/OS-II embedded real-time operating system. It makes good use of the limited resources, supports SIP and TCP-UDP/IPprotocol. It can connect the analog telephone to Internet and realize the VoIP application. This system has a great future for its high efficiency andlow cost.【Key words】Analog telephone adapter (ATA); Voice over Internet protocol (VoIP); Digital signal processor (DSP); μC/OS-II
Research and Implementation of VoIPATA Based on Single DSP
標(biāo)簽:
VoIP
DSP
模擬電話
適配器
上傳時(shí)間:
2013-11-20
上傳用戶:Wwill