Title :
An empirical study of packet voice distribution over a campus-wide network
Author :
Dempsey, Bert J. ; Lucas, Matthew T. ; Weaver, Alfred C.
Author_Institution :
Dept. of Comput. Sci., Virginia Univ., Charlottesville, VA, USA
Abstract :
Support for digital audio and video streams (continuous media) in desktop computers is increasingly widespread and hence the demand for high-quality network distribution of continuous media streams is growing. While current local area and campus-wide networks have high-bandwidth links and powerful routers, the delay sensitivities of continuous media streams pose a challenge. Our paper provides an empirical investigation of the feasibility of transmitting real-time packet streams across a large extant campus network, the University of Virginia campus network. This network is representative of contemporary large enterprise networks consisting of Ethernet segments connected by high-performance routers to high-speed back-bones, e.g., FDDI rings. We focus on interactive packet voice. Delay and loss measurements are obtained for packet voice streams transmitted over three paths through the network. These measurements are used to examine the voice protocol parameters for this environment, including a novel retransmission-based error control proposed by Dempsey (1994)
Keywords :
FDDI; LAN interconnection; delays; error correction; packet switching; performance evaluation; protocols; voice communication; Ethernet; FDDI rings; University of Virginia campus; campus-wide network; continuous media streams; delay sensitivities; desktop computers; digital audio streams; digital video streams; high-bandwidth links; high-speed back-bones; interactive packet voice; large enterprise networks; network distribution; packet delay measurement; packet loss measurement; packet voice distribution; real-time packet streams transmission; retransmission-based error control; routers; voice protocol parameters; Communication system traffic control; Computer networks; Computer science; Delay effects; Distributed computing; Error correction; Ethernet networks; Protocols; Spine; Streaming media;
Conference_Titel :
Local Computer Networks, 1994. Proceedings., 19th Conference on
Conference_Location :
Minneapolis, MN
Print_ISBN :
0-8186-6680-3
DOI :
10.1109/LCN.1994.386573