This project uses JPcap library.
By using it you can view Packet level information about ongoing traffic on your network.
For windows7 you need to run the Jar file as Admin.
An IP Based decentralised Call recorder in Java
Main Components: Packet Sniffer (included offline tcpdump file andalyzer) , SIP/RTP Analyzer (separates SIP and RTP packets from the stream , Network Mapper (Draws a diagram of the nodes)