Differentiated Service in IP Networks Using Voice and Data Applications

Marlenne Angulo, Marco Turrubiartes
InSITE 2003  •  Volume 3  •  2003
One of the options that telephonic systems have to optimize the required bandwidth is to migrate to statistical multiplexing systems. These multiplexing schemes also allow the convergence with current data communications systems. This work is based in the interconnection of telephonic systems through the data network using digitalization and voice compression techniques. The optimization of the resources is achieved using the voice compression standard of 8 kbps instead of the 64 kbps standard, thus, introducing differentiated services in IP networks. The performance of the voice packages is improved in terms of delay and package losses. The results presented were obtained by means of computer simulations using COMNET. The merit of this work is the usage of real telephonic traffic information obtained from the call recorders of the UABC, the information was acquired for several months, which allowed the consideration of effects such as rush hours and variable call duration. The performance of the system was evaluated, obtaining very satisfactory results in terms of resources utilization.
Voice over IP networks, Differentiated Services, Quality of service
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