The Real-time Transport Protocol (RTP) is a IETF standard protocol for

delivering audio and video content across the Internet.

The RTP protocol uses dynamic port ranges and is usually configured with port

ranges of 16384-32767

* [IETF Documentation](http://www.ietf.org/rfc/rfc1889.txt)

* [Wikipedia](http://en.wikipedia.org/wiki/Real-time_Transport_Protocol)