Insufficient Quality of Service (QoS) of Voice over Internet Protocol (VoIP) is a growing concern that has lead the need for research and study. In this paper we investigate the performance of VoIP and the impact of resource limitations on the performance of Access Networks. The impact of VoIP performance in Access Networks is particularly important in regions where Internet resources are limit...

VoIP (Voice over Internet Protocol) is a growing technology during last decade. It provides the audio, video streaming facility on successful implementation in the network. However, it provides the text transport facility over the network. Due to implementation of it the cost effective solution, it can be developed for the intercommunication among the employees of a prestigious organization. Th...

Nowadays, Voice over IP (VoIP) constitutes a privileged field of service innovation. One benefit of the VoIP technology is that it may be deployed using a centralized or a distributed architecture. The majority of today‟s VoIP systems are deployed using the client–server centralized architecture. One of the most efficient approaches used in the deployment of centralized VoIP systems is based on...

VoIP technologies that enable Internet voice communication are spreading rapidly, with many telecommunication carriers already providing VoIP services based on these technologies. The market for this area is expected to become significantly larger as the number of subscribers continues to increase. VoIP technologies must first be enhanced, however, before VoIP services can support all the voice...

In this paper, we propose an intelligent channelmultiplexed home intercom system based on Voice over IP (VoIP), which is different from traditional home intercom system. The transmissions of audio and video signal are both supported in the system. According to different functions, the system is mainly divided into two modules: VoIP module and master control module. VoIP module consists of drive...

In Voice over Internet Protocol (VoIP) system, the speech signal is degraded when passed through the network layers, since the best effort policy based IP network leads to the network degradations including delay, packet loss jitter. The transmission of voice over internet protocols requires signal processing for reliable & efficient performance over the communication platform. The work in this...

In this paper, we address issues related to implementing Voice-over-IP (VoIP) services in packet switching networks. VoIP has been identified as a critical real-time application in the network QoS research community and has been implemented in commercial products. To provide competent quality of service for VoIP, the call admission control (CAC) mechanism has to be introduced to prevent packet ...

With the tremendous growth in popularity and bandwidth of the Internet, VoIP technology has emerged that allows phone calls to be routed over Internet infrastructure rather than the traditional Public Switched Telephone Network (PSTN) infrastructure. The issues faced by law enforcement authorities concerning VoIP are very different from that of traditional telephony. Wiretapping is not applicab...