In this complex and evolving scenario, VoIP traffic monitoring tools are very few, often integrated into packet sniffers such as ethereal [ethereal] [hollis] and used for finding issues (e.g. severe packet loss or incompatible codecs) in specific situations, rather than for permanently monitoring VoIP and non-VoIP traffic. Other tools such as Vomit [vomit] or RTP-tools [...]
Archive for August, 2009
Got Friends or Family in Italy? Call Them!
18/08/2009
There was a time when people used to think twice before making long distance call. This is because, the calling cost was prohibitive. In order to make a long distance call, the service provider has to enable the telephone connection for such calls. With the advent of Calling Cards and the VOIP, calling Italy has [...]
TRANSPARENT WATERMARKING OF VOIP FLOWS IN REAL TIME
11/08/2009
In order to be able to watermark any VoIP flows transparently, it is desirable to have a VoIP gateway which forwards the VoIP flows and watermarks any specified bypassing VoIP flows with specified watermarks. To embed the watermark into the inter-packet timing of a VoIP flow, we need a capability to delay specified packet of [...]
Something about VoIP
06/08/2009
Although voice over IP (VoIP) has existed for several years, it has only recently begun to take off as a viable alternative to traditional voice systems and public switched telephone networks (PSTN). Interest in VoIP has grown in part because the technology can help both service providers and enterprises to reduce costs by using a [...]