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Design of a Embedded Voice Terminal Platform Based on SIP Protocol

Author: LiuZuoPeng
Tutor: HanXiaoBing
School: Xi'an University of Science and Technology
Course: Communication and Information System
Keywords: VOIP SIP WinCE Software Development
CLC: TN916.2
Type: Master's thesis
Year: 2011
Downloads: 50
Quote: 1
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Abstract


VoIP is a network-based voice communications, the communications network and computer network integration between the most direct expression of this trend . Most VoIP terminals are based on the development of encapsulated into an agreement with the SOC coding and peripheral interface programs or low-end DSP. Currently on the market most of the voice terminal features a single, difficult to upgrade , less interface , scalability, low problem , this project proposes to SIP as the signaling protocol voice terminal platform . It can be achieved as a basic IP phone voice calls , but also has a faster speed , and in processing power and software system for the feature upgrades aside adequate resources and interfaces. Development process successfully tailoring of the WinCE operating system kernel and ported to the terminal platform , completed the SIP protocol stack and voice codec library recompilation , erected platform software environment. Completed according to the design goals audio driver and application software is written . Firstly, research background of the subject briefly described , explained the purpose of the research projects , the significance of the status quo at home and abroad ; followed by a comprehensive analysis and study of the VoIP system involved in key technologies, including voice processing , signaling agreement , and the basic functions of SIP protocol , network architecture, protocol format and made ??a careful study of the call flow . In the analysis of selected hardware platform , the depth of the entire software development platform to build , including the operating system migration , driver development , application software development. The terminal according to the design goals of the system tested , the test results are given . Finally, it should be further developed in -depth study and endless perfect place for the subsequent development of the content discussed.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Phone > Telephone lines, telephone network
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