VoIP(Voice over IP) is one of the most important applications on the Internet. As the voice coding enhancing, VoIP provides a good voice quality with low bandwidth. Therefore, the IP telephony services have a price advantage with PSTN. In the near future, VoIp may replace with the PSTN to provide a better telephony service.
In this paper, we discuss how to design and implement an embedded VoIp user agent system. With the help of DSP(Digital Signal Processor), we speed up the voice data processing. We use Linux as the embedded operating system and other open source library to implement a VoIP user agent base on SIP(Session Initiation Protocol) standard. With the hardware and software co-design, we build up an embedded VoIP Integrated Access Device.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0723107-144808 |
| Date | 23 July 2007 |
| Creators | Lin, Cheng-Yen |
| Contributors | Jiunn-Ru Lai, Cheng-Fu Chou, Hsiao-Kuang Wu, Chun-Hung Richard Lin |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0723107-144808 |
| Rights | not_available, Copyright information available at source archive |
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