Title : Performance of VBR Voice over ATM : Effect of Scheduling and Drop Policies
نویسنده
چکیده
Voice in its inherent nature is variable. It is natural to use the VBR class for voice, and transmit voice in its bursty form. On an average, human voice has an speech activity factor of about 42%. This allows us to multiplex a lot of voice sources together. We study the degradation in voice quality under various scheduling policies for VBR voice. Our simulations showed that it is desirable to keep the total VBR-voice load to about 50% of the total link capacity, in order to maintain good quality voice. The remaining link capacity could then be filled up by data. ****************************************************************** Source: Jayaraman Iyer, Raj Jain, Sohail Munir Department of CIS, The Ohio State University (and NASA) 395 Dreese lab, 2015 Neil Ave, Columbus, OH 43210-1277 Phone: 614-292-3989, Fax: 614-292-2911, Email:{jiyer,jain}@cse.wustl.edu Sudhir Dixit Nokia Research Center 3 Burlington Woods Dr., Suite 250 Burlington, MA 01803 Phone: 617-238-4915, Email: [email protected] *******************************************************************
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