VoIP represents the future of digital voice communications and many carriers are preparing for the VoIP revolution. However, a number of outstanding issues need to be settled. The...
We present a survey of Voice over IP security research. Our goal is to provide a roadmap for researchers seeking to understand existing capabilities and, and to identify gaps in ad...
— Voice over IP (VoIP) services based on the Session Initiation Protocol (SIP) gain ground as compared to other protocols like MGCP or H.323. However, the open SIP architecture c...
In this paper we present the results of the experimental analysis of the transmission of voice over secure communication links implementing IPsec. Critical parameters characterizi...
A VoIP PBX supports flexible call handling functionality for selective forwarding, cost based outward call routing, recording calls etc. Both users and administrators need a flexi...