VoIP on a bare PC
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Type of Workapplication/pdf
ix, 100 pages
DepartmentTowson University. Department of Computer and Information Sciences
RightsCopyright protected, all rights reserved.
There are no restrictions on access to this document. An internet release form signed by the author to display this document online is on file with Towson University Special Collections and Archives.
Speech processing systems
This dissertation proposes a novel VoIP softphone architecture for a bare Intel-386 (or above) based PC without an operating system. First, we provide an overview of bare PC computing and note the advantages of a bare PC softphone including its inherent simplicity and ability to provide secure, reliable and efficient voice communication. Next, we discuss the design of a bare PC softphone and describe its architecture and implementation. We then present performance measurements from LAN and Internet experiments, which consider delay, jitter, packet loss, and MOS. They indicate that a bare PC softphone has less jitter, less security overhead, and is able to sustain larger voice packet sizes and a heavier load than a WinRTP softphone while maintaining acceptable call quality with or without background traffic. A bare PC softphone also has acceptable call quality when running Voice over Ethernet (voice packets with Ethernet headers only) on a LAN.