Hi there,
i have been working on wireshark for years , we use cisco routers to monitor Ethernet ports, and forward traffic to 1 ethernet port where we capture each packet decode it,
basically we provide Call recording solutions, i am expert with libpcap, i have written various tools on libpcap, i have also a java program ready to capture traffic and filter it in different bases,
just send me a message to start work on your project right away