JRTPLIB 3.9.1.tar.bz2 V3R1
The open source software JRTPLIB is part of the OpenStage telephones in this list.
An overview of all used open source software on OpenStage telephones you find in the category page.
The library offers support for the Real-time Transport Protocol (RTP), defined in RFC 3550. It makes it very easy to send and receive RTP packets and the RTCP (RTP Control Protocol) functions are handled entirely internally.