http://www.rfc-editor.org/rfc/rfc5450.txt
RFC 5450: Transmission Time Offsets in RTP Streams, D. Singer, H. Desineni2009-03-01T23:00:00-00:00This document describes a method to inform Real-time Transport Protocol (RTP) clients when RTP packets are transmitted at a time other than their 'nominal' transmission time. It also provides a mechanism to provide improved inter-arrival jitter reports from the clients, that take into account the reported transmission times. [STANDARDS-TRACK]