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ISDN primary rate interface impact on performance of integrated voice and data on CSMA/CD networks-a measurement and simulation study

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2 Author(s)
Sohraby, K. ; AT&T Bell Lab., Holmdel, NJ, USA ; Austin, G.P.

The impact of an integrated services digital network primary rate interface (ISDN PRI) on the performance of integrated voice and data applications on carrier-sense multiaccess with collision detection (CSMA/CD) networks is studied. It is assumed that a 10-Mb/s CSMA/CD local area network is used to interconnect packet voice telephones and PCs. An overview of the simulation model is given and results of the simulation model are discussed and compared with performance under other traffic assumptions. Throughout the discussion, it is assumed that there is no priority among voice and data packets. In order to study the impact of backoff algorithms on voice packet loss and data delay, the accelerated contention resolution, linear priority, and assignment of a threshold for backoff for the voice packets are evaluated and compared with the standard IEEE 802.3 binary exponential backoff that is implemented in the majority of CSMA/CD LANs

Published in:

Global Telecommunications Conference, 1990, and Exhibition. 'Communications: Connecting the Future', GLOBECOM '90., IEEE

Date of Conference:

2-5 Dec 1990