Abstract Voice over Internet Protocol (VoIP) is an active area of research in the world of
communication. The high revenue made by the telecommunication companies is a …

VoIP calls are sensitive to several impairments, such as delay and packet loss. One way to
overcome these problems is by adaptively adjusting application-layer parameters to keep a …

Voz sobre IP, VoIP, es uno de los servicios con mayor desarrollo bajo plataformas
inalámbricas; actualmente se ha iniciado su implementación como alternativa frente a la …

This paper presents the architecture and design of an enhanced VoIP gateway based on the
H. 323 protocol. The key characteristics of this gateway include: scalability by separating …

This paper describes methods for mode selection in multirate speech codecs, such as the
AMR (Adaptive Multi-Rate), that is the mandatory speech codec selected in 3GPP (3rd …

Chamadas de voz baseadas na tecnologia VoIP (Voice over Internet Protocol) estao
suscetıveis a degradaçoes diversas, provenientes tanto da camada de aplicaçao, como da …

I am truly indebted to my Major Professor, Dr. Ravi Sankar, for his teaching, impeccable
guidance, ceaseless patience, and continued encouragement in last seventeen years and …

VolPis one of the services that has been develo** over under this type of wireless
platforms and today has begun to implement as an alternative to the PSTN (Public Switched …

Voice over IP (VoIP) has been deployed over the wireline networks for the last decade. It
achieved remarkable success of the adaptation as the replacement of circuit switched …

Today, Internet technologies have pervaded every corner of our society. More and more
people are benefiting from the Internet in one way or the other. One of the current Internet …