I need some help in finding tool to sniff SIP+RTP packets and separate each session.

Following the wiki page  https://wiki.freeswitch.org/wiki/Packet_Capture i've installed pcapsipdump 0.2 rel.

Unfortunately it utilizes just one core to maximum and all .pcap files are quality affected.

As i assume this is the limitation of this app and there is nothing i can do to overcome this.

If possitive, could you please point me to some similiar free app.

Thanks

Maciej.