Aalto University Aalto University Aalto University Fraunhofer HHI Fraunhofer HHI Multipath RTP (MPRTP) is an extension to the Real-time Transport Protocol (RTP) that allows multi-homed endpoints to take advantage of the availability of multiple Internet paths between endpoints to send /receive media packets. This document describes how to express the interface advertisement and negotiation during session setup in SDP (Session Description Protocol).