This paper focuses on deployment of voice over the Internet for the customers of a global services provider which needed to extend cost-effectively the portfolio of enhanced voice services including unified messaging, post paid and prepaid calling card services along with related validation, billing and payment systems. Key-words: VoIP, Internet, SS7, Compression, QoS

Voice over Internet protocol (VoIP) is a new way of communicating. It is a technology that allows users to make telephone calls over an IP network. This paper will describe Voice over Internet Protocol (VoIP) to a level that allows discussion of security issues and concerns. Business concerns of implementing VoIP, components of a VoIP system, and relevant security issues and concerns as they ap...

Voice over IP (VOIP) the transmis­ sion of voice over traditional packetswitched IP networks is one of the hottest trends in telecommunications. As with any new technology, VOIP introduces both opportunities and security challenges. Lower cost and greater flexibility are among the prom­ ises of VOIP for the enterprise, but security administrators will face signif­ icant issues. Administrators m...

The emergence of VoIP in the growing Internet services today has brought about new way in which services are rendered to the public. In viewofprovidingbetter alternative to Public Switch Telephone Network (PSTN) with high quality and efficient internet telephony (VoIP), there is a need of having an improved QoS in Voice transmitted over the Internet. In this work, the influence of different imp...